Heat-resistant steel bent pipe casting mold and casting process thereof

Abstract

The invention relates to the technical field of casting molds, and discloses a heat-resistant steel bent pipe casting mold and a casting process thereof, and the heat-resistant steel bent pipe casting mold comprises a casting unit, a depoling separation unit and a jacking unit. The driving motor drives the rotating disc and the adjusting roller to synchronously rotate, when the driving rack slides on the sliding groove, the whole driving rack can synchronously slide, the driving rack finally drives the upper die to move through the inclined jacking groove, and therefore separation of the upper die, the lower die and a workpiece is completed, and the positioning gear on the side wall of the driving rack synchronously rotates, so that the workpiece is accurately positioned. And after the driving rack slides to the annular groove, the ejector rod slides on the spiral groove at the moment, finally, the ejector rod drives the ejector plate to move upwards, the ejector plate jacks the bent pipe workpiece to move upwards, separation of the bent pipe workpiece and the lower mold is completed, and finally demolding of the bent pipe workpiece is completed. And the use of a driving source is reduced, the coordination operation among all parts is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of casting moulds, and in particular relates to a heat-resistant steel bent pipe casting mould and a casting process thereof. Background Art

[0002] In modern industrial production, heat-resistant steel pipe bends are widely used in pipeline systems under high temperature environments, such as thermal power generation, petrochemicals, etc. For the production of heat-resistant steel pipe bends, casting process is an important manufacturing method, and casting molds are the key factors that determine the quality and production efficiency of the pipe bends.

[0003] At present, when demolding the traditional elbow casting mold after use, a series of cumbersome operations are required. First, the upper mold must be disassembled, then the mold core must be removed from the elbow, and finally the elbow and the lower mold must be separated. However, during the entire demolding process, multiple drive sources are required to complete different actions, such as driving the upper mold to lift, the mold core to pull out, and the elbow to separate from the lower mold. The collaborative work of multiple drive sources requires precise control and coordination, which not only increases the equipment cost and operation difficulty, but also in actual operation, due to the inconvenient coordination between the drive sources, operational errors are prone to occur, resulting in long demolding time and low production efficiency. At the same time, it also increases the risk of damage to the elbow during the demolding process, affecting the quality and pass rate of the product.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A heat-resistant steel elbow casting mold comprises a casting unit, a core stripping and separation unit and a jacking unit.

[0007] The casting unit comprises a lower die and an upper die, the lower die and the upper die are plugged and assembled with each other, a first casting cavity is opened on the lower die, a second casting cavity is opened at the bottom of the upper die, the first casting cavity and the second casting cavity are adapted to each other, a storage cover is installed on the lower die, a mold core is slidably installed on the storage cover, and the mold core is placed in a cavity formed by the first casting cavity and the second casting cavity, and the cavity formed by the first casting cavity, the second casting cavity and the mold core is used for casting a bent pipe workpiece;

[0008] The core stripping and separation unit comprises a driving motor, the driving motor is installed in the inner cavity of the lower mold, a rotating disk is installed at the output end of the driving motor, a combined groove is provided on the rotating disk, and the combined groove comprises an annular groove and a sliding groove, the annular groove and the sliding groove are connected to each other, the sliding groove is an inclined groove, a driving rack is slidably installed on the combined groove, the driving rack slides horizontally in the inner cavity of the lower mold, a synchronous plate is installed on the driving rack, fixed plates are installed at both ends of the synchronous plate, a lifting groove is provided on the fixed plate, a plug plate is slidably provided on the lifting groove, the plug plate movably passes through the lower mold, the top of the plug plate and the bottom of the upper mold are connected to each other, a positioning gear is meshedly installed on the side wall of the driving rack, a synchronous shaft is installed at the rotation center of the positioning gear, a synchronous bracket is installed on the side wall of the synchronous shaft, and the synchronous bracket is connected to the core shell;

[0009] The lifting unit includes an adjusting roller, which is installed on the rotation center of the turntable. The turntable is provided with an arc groove and a spiral groove, which are connected to each other. The circular angle corresponding to the arc groove is the same as the circular angle corresponding to the sliding groove. A push rod is meshedly installed on the arc groove, and a top plate is installed on the push rod. The top plate slides vertically in the chamber of the first casting cavity.

[0010] As a preferred embodiment of the present invention, a driving cavity is opened inside the lower mold, the inner wall of the driving cavity is connected to the driving motor housing, an inspection door is installed on the side wall of the lower mold by bolts, the inspection door is connected to the driving cavity, a countersunk groove is opened on the lower mold, and the upper mold is inserted in the countersunk groove.

[0011] As a preferred embodiment of the present invention, four threaded holes are provided at the corresponding corners of the lower die and the upper die, each of the threaded holes is installed with a bolt for fixing the position of the lower die and the upper die, a limiting rod is installed at the bottom of the upper die, a limiting hole is provided on the lower die, and the limiting rod is movably inserted in the limiting hole.

[0012] As a preferred embodiment of the present invention, a casting through hole is provided on the upper mold, and the casting through hole is interconnected with the second casting cavity. A handle is installed on the upper mold, and an anti-slip pad is installed on the handle. An assembly groove is provided at the bottom of the upper mold, and the position of the assembly groove is adapted to the position of the storage cover.

[0013] As a preferred embodiment of the present invention, a guide rod is installed inside the storage cover, a guide groove is opened on the mold core, the guide rod and the guide groove are plugged into each other, and the guide rod and the guide groove are circular, and a return spring is sleeved on the side wall of the guide rod, one end of the return spring is clamped on the side wall of the storage cover, and the other end of the return spring is clamped on the end face of the mold core.

[0014] As a preferred embodiment of the present invention, a transmission shaft is installed at the output end of the driving motor, a positioning seat is rotatably installed at the end of the transmission shaft, the positioning seat is installed in the inner cavity of the lower mold, and the transmission shaft is respectively connected to the rotation center of the turntable and the rotation center of the adjusting roller.

[0015] As a preferred embodiment of the present invention, a guide slider is installed on the side wall of the driving rack, and the guide slider is slidably connected to the sliding groove. A slide plate is installed on the driving rack, and a slide rod is movably installed on the slide rod. One end of the slide rod is clamped on the side wall of the lower mold cavity, and a positioning plate is installed on the end of the slide rod. The diameter of the positioning plate is larger than the diameter of the slide rod. A positioning spring is installed on the side wall of the slide rod, one end of the positioning spring is clamped on the side wall of the slide, and the other end of the positioning spring is clamped on the side wall of the lower mold cavity.

[0016] As a preferred embodiment of the present invention, one end of the gear shaft of the positioning gear and the synchronization shaft are connected to each other, and a fixed seat is installed at the other end of the gear shaft of the positioning gear, and the fixed seat is installed on the side wall of the inner cavity of the lower mold, and the fixed plate slides horizontally on the side wall of the inner cavity of the lower mold, and a guide protrusion is installed at the bottom of the insert plate, and the guide protrusion slides on the lifting groove.

[0017] As a preferred embodiment of the present invention, a lifting slider is installed on the side wall of the jacking rod, and the lifting slider is slidably connected to the arc groove, a side plate is installed on the side wall of the jacking slider, and a side rod is vertically installed on the side plate, both ends of the side rod are installed in the inner cavity of the lower mold, and an inner groove is opened on the top of the top plate, and the inner groove is adapted to the curvature of the inner side wall of the first casting cavity.

[0018] As a preferred embodiment of the present invention, the casting process of the heat-resistant steel elbow casting mold comprises the following steps:

[0019] Step 1: Assemble the lower mold and the upper mold, and pour the molten liquid for casting the elbow into the first casting cavity and the second casting cavity, let it stand and cool for a period of time, and separate the lower mold and the upper mold;

[0020] Step 2: Start the drive motor, which drives the position of the combined groove on the turntable to change. The sliding groove on the combined groove drives the drive rack to slide, which in turn drives the synchronous plate and the fixed plate to slide, and pushes the plug plate upward through the inclined jacking groove, and finally makes the upper mold with the plug plate installed move upward, so as to achieve the purpose of separating the upper mold and the lower mold;

[0021] Step 3: During the sliding process of the driving rack, the positioning gear on the side wall of the driving rack rotates synchronously, the synchronous shaft on the rotation center of the positioning gear rotates synchronously, and the synchronous bracket on the synchronous shaft rotates synchronously. Finally, the synchronous bracket drives the mold core to be removed from the prepared bent pipe workpiece, which is convenient for the subsequent unloading operation;

[0022] Step 4: The turntable synchronously drives the adjusting roller to rotate. When the guide slider moves to the annular groove, the upper mold and the lower mold are separated, and the mold core automatically retracts. However, the corresponding lifting slider slides onto the spiral groove. As the spiral groove rotates with the adjusting roller, the entire lifting slider moves vertically upward, and the ejector rod on the lifting slider moves vertically upward synchronously. The ejector rod drives the ejector plate to move up. At this time, the ejector plate moves upward from the first casting cavity, thereby pushing the bent pipe workpiece upward, ultimately making the bent pipe workpiece and the lower mold convenient for unloading.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] During the demoulding process of the present invention, the turntable and the adjusting roller are driven to rotate synchronously by the driving motor. When the driving rack slides on the sliding groove, the entire driving rack can slide synchronously, and the driving rack finally drives the upper mold to move through the inclined lifting groove, thereby completing the separation of the upper mold, the lower mold and the workpiece, and driving the positioning gear on the side wall of the rack to rotate synchronously to complete the separation of the mold core and the workpiece. When the driving rack slides to the annular groove, the push rod slides on the spiral groove at this time, and finally the push rod drives the push plate to move up, and the push plate lifts the bent pipe workpiece and moves it up, completing the separation of the bent pipe workpiece and the lower mold, and finally completing the demoulding of the bent pipe workpiece. The present invention as a whole can simplify the demoulding process, reduce the use of driving sources, reduce the cost of using molds, facilitate coordinated operations between various components, and improve production efficiency.

[0025] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the attached picture:

[0027] Figure 1 A three-dimensional diagram of a heat-resistant steel elbow casting mold;

[0028] Figure 2 A side view of a heat-resistant steel elbow casting mold;

[0029] Figure 3 The present invention is an assembly drawing of a heat-resistant steel elbow casting mold;

[0030] Figure 4 A three-dimensional diagram of the lower mold of a heat-resistant steel bent pipe casting mold;

[0031] Figure 5 A bottom view of an upper die of a heat-resistant steel bending pipe casting die;

[0032] Figure 6 A cross-sectional view of a storage cover of a heat-resistant steel elbow casting mold;

[0033] Figure 7The figure is a schematic diagram of the internal structure of the lower mold of a heat-resistant steel bending pipe casting mold;

[0034] Figure 8 A schematic diagram of the partial structure of a heat-resistant steel pipe casting mold Figure 1 ;

[0035] Fig. 9 A schematic diagram of the partial structure of a heat-resistant steel pipe casting mold Figure 2 ;

[0036] Fig.10 A schematic diagram of the partial structure of a heat-resistant steel pipe casting mold Figure 3 .

[0037] In the figure:

[0038] 100, casting unit; 101, lower die; 1011, inspection door; 1012, driving cavity; 1013, countersunk groove; 1014, limiting hole; 102, upper die; 1021, threaded hole; 1022, handle; 1023, limiting rod; 103, mold core; 1031, first casting cavity; 1032, second casting cavity; 1033, casting through hole; 1034, bent pipe workpiece; 104, storage cover; 1041, assembly groove; 1042, guide rod; 1043, guide groove; 1044, return spring;

[0039] 200, core stripping and separation unit; 201, driving motor; 2011, transmission shaft; 2012, positioning seat; 202, turntable; 2021, annular groove; 2022, sliding groove; 2023, guide slider; 203, driving rack; 2031, positioning gear; 2032, fixing seat; 2033, synchronous shaft; 2043, synchronous bracket; 205, slide plate; 2051, slide bar; 2052, positioning plate; 2053, positioning spring; 206, synchronous plate; 2061, fixing plate; 2062, lifting groove; 2063, plug plate; 2064, guide protrusion;

[0040] 300, lifting unit; 301, adjusting roller; 3011, arc groove; 3012, spiral groove; 302, lifting slider; 3021, top rod; 3022, top plate; 3023, inner groove; 3024, side plate; 3025, side rod. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0042] Embodiment 1:

[0043] like Figures 1 to 10As shown, a heat-resistant steel elbow casting mold includes a casting unit 100, a core removal and separation unit 200 and a lifting unit 300.

[0044] The casting unit 100 includes a lower mold 101 and an upper mold 102, which are plugged and assembled with each other. A first casting cavity 1031 is opened on the lower mold 101, and a second casting cavity 1032 is opened at the bottom of the upper mold 102. The first casting cavity 1031 and the second casting cavity 1032 are adapted to each other. A storage cover 104 is installed on the lower mold 101, and a mold core 103 is slidably installed on the storage cover 104. The mold core 103 is placed in a cavity formed by the first casting cavity 1031 and the second casting cavity 1032. The cavity formed by the first casting cavity 1031, the second casting cavity 1032 and the mold core 103 is used to cast a bent pipe workpiece 1034.

[0045] The core stripping and separation unit 200 includes a driving motor 201, which is installed in the inner cavity of the lower mold 101. A turntable 202 is installed at the output end of the driving motor 201. A combination groove is provided on the turntable 202, and the combination groove includes an annular groove 2021 and a sliding groove 2022. The annular groove 2021 and the sliding groove 2022 are connected to each other. The sliding groove 2022 is an inclined groove. A driving rack 203 is slidably installed on the combination groove. The driving rack 203 slides horizontally in the inner cavity of the lower mold 101. A synchronous plate 206 is installed on the driving rack 203. Fixed plates 2061 are installed at both ends of the synchronous plate 206. A jacking groove 2062 is provided on the fixed plate 2061. A plug plate 2063 is slidably provided on the jacking groove 2062. The plug plate 2063 movably passes through the lower mold 101. The top of the plug plate 2063 and the bottom of the upper mold 102 are connected to each other. The driving motor 201 can To drive the turntable 202 to rotate, and the sliding groove 2022 on the turntable 202 drives the driving rack 203 and the synchronous plate 206 to slide, the inclined groove installed on the fixed plate 2061 at the end of the synchronous plate 206 The lifting groove 2062 drives the plug plate 2063 to move up, and the plug plate 2063 drives the upper mold 102 to move up, and finally the upper mold 102 can be driven to separate from the lower mold 101; the side wall of the driving rack 203 is meshed with a positioning gear 2031, and the rotation center of the positioning gear 2031 is installed with a synchronous shaft 2033. The side wall of the synchronous shaft 2033 is installed with a synchronous bracket 2043, and the synchronous bracket 2043 is interconnected with the outer shell of the core 103; after the driving rack 203 moves, it drives the positioning gear 2031 to rotate, and the synchronous shaft 2033 on the positioning gear 2031 drives the core 103 to move, and finally the core 103 and the bent pipe workpiece 1034 are separated.

[0046] The lifting unit 300 includes an adjusting roller 301, which is installed on the rotation center of the turntable 202. The turntable 202 is provided with an arc groove 3011 and a spiral groove 3012. The arc groove 3011 and the spiral groove 3012 are connected to each other. The circular angle corresponding to the arc groove 3011 is the same as the circular angle corresponding to the sliding groove 2022. A push rod 3021 is meshedly installed on the arc groove 3011, and a top plate 3022 is installed on the push rod 3021. The top plate 3022 slides vertically in the chamber of the first casting cavity 1031. When the driving rack 203 slides to the annular groove 2021, the push rod 3021 slides on the spiral groove 3012, and finally the push rod 3021 drives the top plate 3022 to move upward, and the top plate 3022 lifts the bent pipe workpiece 1034 to move upward, completing the separation of the bent pipe workpiece 1034 and the lower mold 101, and finally completing the demoulding of the bent pipe workpiece 1034.

[0047] like Figures 1 to 10 As shown, in a specific embodiment, a driving cavity 1012 is opened inside the lower mold 101, and the inner wall of the driving cavity 1012 is interconnected with the outer shell of the driving motor 201, and an inspection door 1011 is installed on the side wall of the lower mold 101 by bolts, and the inspection door 1011 is connected with the driving cavity 1012 to facilitate later maintenance operations through the inspection door 1011, and a countersunk groove 1013 is opened on the lower mold 101, and the upper mold 102 is inserted in the countersunk groove 1013, and the countersunk groove 1013 facilitates the assembly of the lower mold 101 and the upper mold 102.

[0048] like Figures 1 to 10 As shown, further, four threaded holes 1021 are opened at the corresponding corners of the lower mold 101 and the upper mold 102, and each threaded hole 1021 is installed with a bolt for fixing the position of the lower mold 101 and the upper mold 102, a limiting rod 1023 is installed at the bottom of the upper mold 102, and a limiting hole 1014 is opened on the lower mold 101, and the limiting rod 1023 is movably inserted in the limiting hole 1014. When the limiting rod 1023 is inserted in the limiting hole 1014, the position of the upper mold 102 and the lower mold 101 can be preliminarily positioned.

[0049] like Figures 1 to 10 As shown, further, a casting through hole 1033 is opened on the upper mold 102, and the casting through hole 1033 is interconnected with the second casting cavity 1032, so as to facilitate pouring the casting melt into the inside; a handle 1022 is installed on the upper mold 102, and an anti-slip pad is installed on the handle 1022, so that the upper mold 102 can be moved conveniently later by the handle 1022 and the anti-slip pad; an assembly groove 1041 is opened on the bottom of the upper mold 102, and the position of the assembly groove 1041 is matched with the position of the storage cover 104.

[0050] like Figures 1 to 10As shown, further, a guide rod 1042 is installed inside the storage cover 104, and a guide groove 1043 is opened on the mold core 103. The guide rod 1042 and the guide groove 1043 are plugged into each other, and the guide rod 1042 and the guide groove 1043 are circular, and a return spring 1044 is sleeved on the side wall of the guide rod 1042. One end of the return spring 1044 is clamped on the side wall of the storage cover 104, and the other end of the return spring 1044 is clamped on the end face of the mold core 103. When the mold core 103 moves, the guide groove 1043 inside the mold core 103 can slide on the guide rod 1042. At this time, the return spring 1044 on the side wall of the guide rod 1042 is compressed synchronously, and the compressed return spring 1044 facilitates the later resetting of the mold core 103.

[0051] Embodiment 2:

[0052] The difference between Example 1 and this Example is that: Figures 1 to 10 As shown, a transmission shaft 2011 is installed at the output end of the driving motor 201, and a positioning seat 2012 is rotatably installed at the end of the transmission shaft 2011. The positioning seat 2012 is installed in the inner cavity of the lower mold 101. The transmission shaft 2011 is respectively connected to the rotation center of the turntable 202 and the rotation center of the adjusting roller 301. The transmission shaft 2011 is used to drive the turntable 202 and the adjusting roller 301 to rotate synchronously.

[0053] like Figures 1 to 10 As shown, in a specific embodiment, a guide slider 2023 is installed on the side wall of the driving rack 203, and the guide slider 2023 is slidably connected with the sliding groove 2022. A slide plate 205 is installed on the driving rack 203, and a slide bar 2051 is movably installed on the slide bar 205. One end of the slide bar 2051 is clamped on the side wall of the inner cavity of the lower mold 101, and a positioning plate 2052 is installed at the end of the slide bar 2051. The diameter of the positioning plate 2052 is larger than the diameter of the slide bar 2051. A positioning spring 2053 is installed on the side wall of the slide bar 2051. The positioning spring One end of 2053 is clamped on the side wall of the slide plate 205, and the other end of the positioning spring 2053 is clamped on the side wall of the inner cavity of the lower mold 101. When the driving rack 203 slides horizontally, the slide plate 205 on the driving rack 203 slides synchronously. The slide plate 205 slides on the slide bar 2051 at this time. At this time, the positioning spring 2053 on the slide bar 2051 is compressed. The positioning spring 2053 is used to facilitate the subsequent resetting operation, and the positioning plate 2052 at the end of the slide bar 2051 ensures that the slide plate 205 and the slide bar 2051 will not separate.

[0054] like Figures 1 to 10As shown, further, one end of the gear shaft of the positioning gear 2031 and the synchronization shaft 2033 are interconnected, and a fixed seat 2032 is installed at the other end of the gear shaft of the positioning gear 2031, and the fixed seat 2032 is installed on the side wall of the inner cavity of the lower mold 101, and the fixed plate 2061 slides horizontally on the side wall of the inner cavity of the lower mold 101, and a guide protrusion 2064 is installed at the bottom of the insert plate 2063, and the guide protrusion 2064 slides on the lifting groove 2062.

[0055] Embodiment 3:

[0056] The difference between Example 2 and this example is that: Figures 1 to 10 As shown, a lifting slider 302 is installed on the side wall of the top rod 3021, and the lifting slider 302 is slidably connected with the arc groove 3011, and a side plate 3024 is installed on the side wall of the lifting slider 302, and a side rod 3025 is vertically installed on the side plate 3024. Both ends of the side rod 3025 are installed in the inner cavity of the lower mold 101, and an inner groove 3023 is opened on the top of the top plate 3022. The inner groove 3023 is adapted to the curvature of the inner side wall of the first casting cavity 1031. When the lifting slider 302 moves vertically upward, the side plate 3024 of the side wall of the lifting slider 302 slides vertically upward along the side rod 3025 at this time, and the sliding path is limited by the side rod 3025 and the side plate 3024.

[0057] The present invention also discloses a casting process of a heat-resistant steel elbow casting mold, and the method steps are as follows:

[0058] Step 1: Assemble the lower mold 101 and the upper mold 102, and pour the molten liquid for casting the elbow into the first casting cavity 1031 and the second casting cavity 1032, let it stand and cool for a period of time, and separate the lower mold 101 and the upper mold 102;

[0059] Step 2: Start the driving motor 201, the driving motor 201 drives the position of the combination groove on the turntable 202 to change, the sliding groove 2022 on the combination groove drives the driving rack 203 to slide, and then drives the synchronous plate 206 and the fixed plate 2061 to slide, and pushes the plug plate 2063 to move up through the inclined jacking groove 2062, and finally makes the upper mold 102 with the plug plate 2063 installed move upward, so as to achieve the purpose of separating the upper mold 102 and the lower mold 101;

[0060] Step 3: During the sliding process of the driving rack 203, the positioning gear 2031 on the side wall of the driving rack 203 rotates synchronously, the synchronous shaft 2033 on the rotation center of the positioning gear 2031 rotates synchronously, and the synchronous bracket 2043 on the synchronous shaft 2033 rotates synchronously. Finally, the synchronous bracket 2043 drives the mold core 103 to be removed from the prepared bent pipe workpiece 1034, which is convenient for the subsequent unloading operation;

[0061] Step 4: The turntable 202 synchronously drives the adjusting roller 301 to rotate. When the guide slider 2023 moves to the annular groove 2021, the upper mold 102 and the lower mold 101 are separated, and the mold core 103 automatically retracts, but the corresponding lifting slider 302 slides onto the spiral groove 3012. As the spiral groove 3012 rotates with the adjusting roller 301, the entire lifting slider 302 moves vertically upward, and the ejector rod 3021 on the lifting slider 302 moves vertically upward synchronously. The ejector rod 3021 drives the top plate 3022 to move upward. At this time, the top plate 3022 moves upward from the first casting cavity 1031, and then pushes the bent pipe workpiece 1034 upward, finally making the bent pipe workpiece 1034 and the lower mold 101 convenient for unloading.

[0062] The implementation principle of a heat-resistant steel elbow casting mold and a casting process thereof of the present invention is as follows:

[0063] When it is necessary to prepare a bent pipe of heat-resistant steel, the operator first assembles the upper mold 102 and the lower mold 101, and screws the bolts into the threaded holes 1021 for installation. At this time, the first casting cavity 1031 and the second casting cavity 1032 in the upper mold 102 and the lower mold 101 cooperate with each other to form an annular cavity, and ensure that the outer surfaces of the first casting cavity 1031, the second casting cavity 1032 and the core 103 are coated with a release agent.

[0064] Then the operator processes the raw material for preparing the heat-resistant steel bent pipe, and pours the molten raw material into the first casting cavity 1031 and the second casting cavity 1032 through the casting through hole 1033, so that the first casting cavity 1031 and the second casting cavity 1032 are filled as a whole. Then the operator leaves the entire mold to cool for a period of time to ensure that the raw material inside can be completely solidified at this time.

[0065] Then the operator cooperates with the bolts for locking the upper mold 102 and the lower mold 101, and then the operator starts the driving motor 201. The driving motor 201 drives the transmission shaft 2011 connected to the output shaft to start rotating, and the transmission shaft 2011 rotates in the positioning seat 2012 at this time, and the positioning seat 2012 is used to limit the position, and the turntable 202 on the side wall of the transmission shaft 2011 starts to rotate. A combination groove is provided on the turntable 202. During the rotation of the turntable 202, the position of the combination groove can be driven to change. As the combination groove moves, the guide slider 2023 moves along the sliding groove 2022 in the combination groove to the annular groove 2021, so the driving rack 203 equipped with the guide slider 2023 slides horizontally as a whole.

[0066] When the driving rack 203 slides horizontally, the slide plate 205 on the driving rack 203 slides synchronously. The slide plate 205 slides on the slide bar 2051 at this time. The positioning spring 2053 on the slide bar 2051 is compressed. The positioning spring 2053 is used to facilitate the subsequent resetting operation, and the positioning plate 2052 at the end of the slide bar 2051 ensures that the slide plate 205 and the slide bar 2051 will not separate.

[0067] When the driving rack 203 slides horizontally, the synchronous plate 206 on the side wall of the driving rack 203 can drive the fixed plate 2061 to slide, and the fixed plate 2061 slides in the side wall of the lower mold 101, and the position of the jacking groove 2062 on the fixed plate 2061 changes. The jacking groove 2062 can drive the vertical limiting plug plate 2063 to slide vertically upward, and the guide protrusion 2064 at the bottom of the plug plate 2063 slides in the jacking groove 2062, which mainly serves the purpose of limiting. The top of the plug plate 2063 is connected to the upper mold 102. At this time, the upper mold 102 moves up and separates from the lower mold 101, which makes it convenient to take out the manufactured bent pipe workpiece 1034 later.

[0068] After the driving rack 203 slides a certain distance, the side wall of the driving rack 203 is meshed with the positioning gear 2031, and the positioning gear 2031 will rotate a certain angle at this time. The synchronous shaft 2033 on the central axis of the positioning gear 2031 starts to rotate at this time, and a synchronous bracket 2043 is installed on the side wall of the synchronous shaft 2033. At this time, the synchronous bracket 2043 drives the mold core 103 installed at the end to rotate. At this time, the mold core 103 can be pulled out from the inner cavity of the bent pipe workpiece 1034, which is convenient for the later removal of the bent pipe workpiece 1034. In the process of the mold core 103 rotating with the synchronous bracket 2043, the guide groove 1043 inside the mold core 103 slides on the guide rod 1042. At this time, the reset spring 1044 on the side wall of the guide rod 1042 is synchronously compressed, and the compressed reset spring 1044 is convenient for the later reset of the mold core 103.

[0069] When the transmission shaft 2011 rotates, the adjusting roller 301 on the surface of the transmission shaft 2011 starts to rotate synchronously. When the guide slider 2023 slides on the sliding groove 2022, the lifting slider 302 slides on the arc groove 3011 opened on the surface of the adjusting roller 301. At this time, the height of the lifting slider 302 remains unchanged. However, when the guide slider 2023 moves to the annular groove 2021, the upper mold 102 and the lower mold 101 are separated, and the mold core 103 automatically retracts. At this time, the corresponding lifting slider 302 slides onto the spiral groove 3012, and along with the spiral groove 3012 Following the rotation of the adjusting roller 301, the entire lifting slider 302 moves vertically upward, and the side plate 3024 of the side wall of the lifting slider 302 slides vertically upward along the side rod 3025, and the sliding path is limited by the side rod 3025 and the side plate 3024, and the top rod 3021 on the lifting slider 302 moves vertically upward at this time, and the top rod 3021 drives the top plate 3022 to move upward. At this time, the top plate 3022 moves upward from the first casting cavity 1031, and then pushes the bent pipe workpiece 1034 upward, finally making the bent pipe workpiece 1034 and the lower mold 101 convenient, and finally facilitating unloading.

Claims

1. A heat-resistant steel elbow casting mold, comprising a casting unit (100), a core removal and separation unit (200) and a jacking unit (300), characterized in that: The casting unit (100) comprises a lower die (101) and an upper die (102), the lower die (101) and the upper die (102) are plugged and assembled with each other, a first casting cavity (1031) is opened on the lower die (101), a second casting cavity (1032) is opened at the bottom of the upper die (102), the first casting cavity (1031) and the second casting cavity (1032) are adapted to each other, a storage cover (104) is installed on the lower die (101), a mold core (103) is slidably installed on the storage cover (104), and the mold core (103) is placed in a cavity formed by the first casting cavity (1031) and the second casting cavity (1032), and the cavity formed by the first casting cavity (1031), the second casting cavity (1032) and the mold core (103) is used for casting a bent pipe workpiece (1034); The core stripping and separation unit (200) comprises a driving motor (201), the driving motor (201) being installed in the inner cavity of the lower mold (101), a rotating disk (202) being installed at the output end of the driving motor (201), a combined groove being provided on the rotating disk (202), and the combined groove comprising an annular groove (2021) and a sliding groove (2022), the annular groove (2021) and the sliding groove (2022) being communicated with each other, the sliding groove (2022) being an inclined groove, a driving rack (203) being slidably installed on the combined groove, the driving rack (203) sliding horizontally in the inner cavity of the lower mold (101), a synchronizing plate (206) being installed on the driving rack (203), and the Fixed plates (2061) are installed at both ends of the synchronous plate (206), a lifting groove (2062) is opened on the fixed plate (2061), a plug plate (2063) is slidably arranged on the lifting groove (2062), the plug plate (2063) movably passes through the lower mold (101), the top of the plug plate (2063) and the bottom of the upper mold (102) are connected to each other, a positioning gear (2031) is meshedly installed on the side wall of the driving rack (203), a synchronous shaft (2033) is installed at the rotation center of the positioning gear (2031), a synchronous bracket (2043) is installed on the side wall of the synchronous shaft (2033), and the synchronous bracket (2043) is connected to the outer shell of the mold core (103); The lifting unit (300) comprises an adjusting roller (301), the adjusting roller (301) being mounted on the rotation center of a turntable (202), the turntable (202) being provided with an arc groove (3011) and a spiral groove (3012), the arc groove (3011) and the spiral groove (3012) being connected to each other, the circular angle corresponding to the arc groove (3011) being the same as the circular angle corresponding to the sliding groove (2022), the arc groove (3011) being meshed with a push rod (3021), the push rod (3021) being mounted with a push plate (3022), the push plate (3022) being vertically slidable in the chamber of the first casting cavity (1031).

2. A heat-resistant steel pipe bending casting mold according to claim 1, characterized in that: A driving cavity (1012) is provided inside the lower die (101), the inner wall of the driving cavity (1012) is connected to the housing of the driving motor (201), an inspection door (1011) is installed on the side wall of the lower die (101) by bolts, the inspection door (1011) and the driving cavity (1012) are connected to each other, a countersunk groove (1013) is provided on the lower die (101), and the upper die (102) is inserted into the countersunk groove (1013).

3. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: Four threaded holes (1021) are provided at corresponding corners of the lower die (101) and the upper die (102), and a bolt for fixing the position of the lower die (101) and the upper die (102) is installed on each of the threaded holes (1021). A limiting rod (1023) is installed at the bottom of the upper die (102), and a limiting hole (1014) is provided on the lower die (101), and the limiting rod (1023) is movably inserted in the limiting hole (1014).

4. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: The upper mold (102) is provided with a casting through hole (1033), and the casting through hole (1033) is communicated with the second casting cavity (1032). The upper mold (102) is provided with a handle (1022), and the handle (1022) is provided with an anti-slip pad. The bottom of the upper mold (102) is provided with an assembly groove (1041), and the position of the assembly groove (1041) is adapted to the position of the storage cover (104).

5. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: A guide rod (1042) is installed inside the storage cover (104), and a guide groove (1043) is opened on the mold core (103). The guide rod (1042) and the guide groove (1043) are plugged into each other, and the guide rod (1042) and the guide groove (1043) are circular. A return spring (1044) is sleeved on the side wall of the guide rod (1042), and one end of the return spring (1044) is clamped on the side wall of the storage cover (104), and the other end of the return spring (1044) is clamped on the end face of the mold core (103).

6. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: A transmission shaft (2011) is mounted on the output end of the driving motor (201), a positioning seat (2012) is rotatably mounted on the end of the transmission shaft (2011), the positioning seat (2012) is mounted in the inner cavity of the lower mold (101), and the transmission shaft (2011) is respectively connected to the rotation center of the turntable (202) and the rotation center of the adjustment roller (301).

7. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: A guide slider (2023) is installed on the side wall of the driving rack (203), and the guide slider (2023) is slidably connected to the sliding groove (2022). A slide plate (205) is installed on the driving rack (203), and a slide bar (2051) is movably installed on the slide bar (205), one end of the slide bar (2051) is clamped on the side wall of the inner cavity of the lower mold (101), and a positioning plate (2052) is installed at the end of the slide bar (2051), and the diameter of the positioning plate (2052) is larger than the diameter of the slide bar (2051). A positioning spring (2053) is installed on the side wall of the slide bar (2051), one end of the positioning spring (2053) is clamped on the side wall of the slide plate (205), and the other end of the positioning spring (2053) is clamped on the side wall of the inner cavity of the lower mold (101).

8. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: One end of the gear shaft of the positioning gear (2031) and the synchronous shaft (2033) are connected to each other, and the other end of the gear shaft of the positioning gear (2031) is installed with a fixed seat (2032), and the fixed seat (2032) is installed on the side wall of the inner cavity of the lower mold (101), and the fixed plate (2061) slides horizontally on the side wall of the inner cavity of the lower mold (101), and a guide protrusion (2064) is installed at the bottom of the plug plate (2063), and the guide protrusion (2064) slides on the lifting groove (2062).

9. The heat-resistant steel elbow casting mold according to claim 1, characterized in that: A lifting slider (302) is installed on the side wall of the lifting rod (3021), and the lifting slider (302) and the arc groove (3011) are slidably connected. A side plate (3024) is installed on the side wall of the lifting slider (302). A side rod (3025) is vertically installed on the side plate (3024). Both ends of the side rod (3025) are installed in the inner cavity of the lower mold (101). An inner groove (3023) is opened on the top of the top plate (3022), and the inner groove (3023) is adapted to the curvature of the inner wall of the first casting cavity (1031).

10. A heat-resistant steel elbow casting process, characterized in that: The heat-resistant steel elbow casting mold according to any one of claims 1 to 9, the casting process of the heat-resistant steel elbow casting mold, the method steps are as follows: Step 1: Assemble the lower mold (101) and the upper mold (102), and pour the molten liquid for casting the elbow into the first casting cavity (1031) and the second casting cavity (1032), let it stand and cool for a period of time, and separate the lower mold (101) and the upper mold (102); Step 2: starting the driving motor (201), the driving motor (201) drives the position of the combination groove on the rotating disk (202) to change, the sliding groove (2022) on the combination groove drives the driving rack (203) to slide, and then drives the synchronous plate (206) and the fixed plate (2061) to slide, and pushes the plug plate (2063) upward through the inclined jacking groove (2062), and finally makes the upper mold (102) installed with the plug plate (2063) move upward, so as to achieve the purpose of separating the upper mold (102) and the lower mold (101); Step 3: During the sliding process of the driving rack (203), the positioning gear (2031) on the side wall of the driving rack (203) rotates synchronously, the synchronous shaft (2033) on the rotation center of the positioning gear (2031) rotates synchronously, and the synchronous bracket (2043) on the synchronous shaft (2033) rotates synchronously. Finally, the synchronous bracket (2043) drives the mold core (103) to be removed from the prepared bent pipe workpiece (1034), so as to facilitate the unloading operation at a later stage. Step 4: The turntable (202) synchronously drives the adjusting roller (301) to rotate. When the guide slider (2023) moves to the annular groove (2021), the upper mold (102) and the lower mold (101) are separated, and the mold core (103) automatically retracts. However, the corresponding lifting slider (302) slides onto the spiral groove (3012). As the spiral groove (3012) rotates with the adjusting roller (301), the entire lifting slider (302) moves vertically upward, and the push rod (3021) on the lifting slider (302) moves vertically upward synchronously. The push rod (3021) drives the top plate (3022) to move upward. At this time, the top plate (3022) moves upward from the first casting cavity (1031), thereby pushing the bent pipe workpiece (1034) upward, and finally making the bent pipe workpiece (1034) and the lower mold (101) convenient for unloading.

Images