A flow coating device for lost foam coating

Abstract

The present application relates to a flow coating device for lost foam coating, belonging to the field of injection molding technology, including a coating flow coating pool, a gantry, a flip frame and a spraying device, wherein the flip frame is used to carry a foam model to be sprayed, the flip frame is provided with a fixing device for fixing the foam model, the gantry is provided with a hoisting device, the hoisting device is used to lift the side of the flip frame, so that the flip frame is in an inclined state and the bottom surface of the foam model is in an inclined state with the ground, the spraying device is used to spray the stirred refractory coating onto the foam model, the bottom surface of the coating flow coating pool is inclined and a reflow groove is provided at the lowest horizontal point, and the excess refractory coating sprayed onto the foam model by the spraying device flows into the coating flow coating pool and flows along the coating flow coating pool into the reflow groove. The present application has the advantage of improving the spraying effect of the refractory coating of the foam model.

Description

Technical Field

[0001] The present application relates to the field of injection molding technology, and in particular to a flow coating device for lost foam coating. Background Art

[0002] Lost foam casting (also known as full-mold casting) is a new casting method in which wax or foam models with similar size and shape to the casting are bonded together into a model cluster, coated with refractory paint and dried, buried in dry quartz sand for vibration molding, and poured under negative pressure to vaporize the model, so that liquid metal occupies the position of the model and forms a casting after solidification and cooling.

[0003] However, the traditional coating process of lost foam generally adopts brush coating (refractory coating), which has low production efficiency, high labor intensity, and cannot be implemented on models with special structures. The quality of brush-coated coating is unstable, and the thickness of the coating layer is uneven, which makes the product prone to defects such as sand sticking and inclusion, increasing the difficulty and efficiency of subsequent production, and increasing production costs in disguise. Summary of the invention

[0004] In order to improve the spraying effect of model refractory coating, the present application provides a flow coating device for lost foam coating.

[0005] The present application provides a flow coating device for lost foam coatings using the following technical solutions:

[0006] A flow coating device for lost foam coating, comprising a coating flow coating pool, a gantry, a turning frame and a spraying device, wherein the turning frame is used to carry a foam model to be sprayed, the turning frame is provided with a fixing device for fixing the foam model, the gantry is provided with a lifting device, the lifting device is used to lift the side of the turning frame, so that the turning frame is in an inclined state and the bottom surface of the foam model is in an inclined state with respect to the ground, the spraying device is used to spray the stirred refractory coating onto the foam model, the bottom surface of the coating flow coating pool is inclined and a reflow groove is provided at the lowest horizontal point, and the excess refractory coating sprayed onto the foam model by the spraying device flows into the coating flow coating pool and flows along the coating flow coating pool into the reflow groove.

[0007] Optionally, the flip frame includes a rectangular frame, a cross bar, a vertical bar and a reinforcement bar, the length direction of the vertical bar is parallel to the length direction of the rectangular frame and is fixedly set in the rectangular frame, the cross bar is located between the vertical bar and the edge bar of the rectangular frame and is fixedly set, the length direction of the cross bar is perpendicular to the length direction of the vertical bar, the length direction of the reinforcement bar is parallel to the length direction of the cross bar, the reinforcement bar is located at the bottom of the rectangular frame and is fixedly set at the bottom of the rectangular frame, and the flip frame also includes a plurality of universal wheels arranged at the bottom of the vertical bar.

[0008] Optionally, the fixing device includes a fixing rod, a first fixing block and a second fixing block, the first fixing block is fixedly arranged at the end of the fixing rod, a first fixing groove is opened on the side of the first fixing block, the first fixing groove is used to clamp the reinforcement rod, and a second fixing groove and a third fixing groove are opened on the second fixing block, the axial directions of the second fixing groove and the third fixing groove are perpendicular to each other, and the second fixing block is slidably clamped on the fixing rod through the second fixing groove; the fixing device also includes an abutment rod, which is used to span and press the foam model to the horizontal rod and the vertical rod, and the abutment rod is slidably clamped in the third fixing groove. The fixing device also includes a first fixing member for fixing the fixing rod and the abutment rod to the second fixing block, and when the abutment rod abuts and fixes the foam model, the opening of the third fixing groove faces away from the ground.

[0009] Optionally, the first fixing member includes two screws threadedly connected to the second fixing block, the two screws are respectively located in the second fixing groove and the third fixing groove and span the second fixing groove and the third fixing groove, and the two screws are coaxially arranged, and the ends of the screws respectively abut the fixing rod and the abutting rod.

[0010] Optionally, a blocking block is provided on the second fixing block and located on the side wall of the third fixing groove, and the blocking block is used to abut against the abutting rod so that the abutting rod is located in the third fixing groove.

[0011] Optionally, the fixing device further comprises a partition plate, wherein the partition plate is located between the fixing rod and the foam model and between the abutting rod and the foam model, and the partition plate is made of a flexible material.

[0012] Optionally, the spraying device includes a stirring drum, a stirring member, a delivery pump, a delivery pipe and a spray gun, wherein the stirring member is used to stir the refractory coating in the stirring drum, the delivery pump is used to deliver the stirred refractory coating through the delivery pipe to the spray gun, and the spray gun is used to spray the refractory coating onto the foam model.

[0013] Optionally, the lifting device includes a winch arranged on the gantry crane, a traction rope is wound on the winch, and a hook is arranged at the end of the traction rope; the lifting device also includes a lifting cloth belt, which is used to cross the outermost cross bar and then wrap around the cross bar and hang on the hook.

[0014] Optionally, the crossbar and the vertical bar are used to support the foam model and have a coating groove formed concavely therein, wherein the coating groove allows the refractory coating to flow and allows the refractory coating to be coated on the contact surface between the foam model and the crossbar and the vertical bar.

[0015] Optionally, a wedge block is further included, which is used to slide and engage in the coating liquid tank (and drive one side of the foam model to separate from the cross bar and the vertical bar by 2-3 mm so that the refractory coating is sprayed on the contact surface.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. After the foam model is made, the foam model is transferred to the flip frame. At this time, the mass of the foam model is about 20-30kg. Then, the foam model is fixed on the flip frame by a fixing device. The spraying device stirs the refractory coating and sprays it onto the foam model. When the bottom of the foam model is sprayed, the lifting device acts on the edge of the flip frame to tilt the flip frame to one side. After the flip frame is tilted, one side of the flip frame is supported on the ground, and then the bottom of the foam model is sprayed (the mass of the foam model after spraying the refractory coating is about 150-200kg). Compared with the brushing of the refractory coating, the brushing effect of the refractory coating is improved; at the same time, the refractory coating sprayed on the surface of the foam model flows on the foam model, and the remaining positions are brushed during the flow process. After the flow coating, the surface quality of the foam model is stable, and the abnormal sand sticking phenomenon is reduced; at the same time, the foam model is tilted by tilting one side of the flip frame for spraying. Compared with moving the foam model, the possibility of damage to the foam model is reduced and the molding quality of the foam model is improved;

[0018] 2. The refractory coating dropped from the foam model to the ground flows along the coating flow pool and flows into the reflux trough. In the above process, the coating waste is reduced, the coating loss is reduced, the sand sticking phenomenon is reduced, the cleaning efficiency is improved, and the use of oxygen melting rods is reduced, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a coating flow coating pool in a flow coating device for lost foam coating according to an embodiment of the present application;

[0020] Figure 2 It is a cross-sectional view of a coating flow coating pool in a flow coating device for lost foam coating according to an embodiment of the present application;

[0021] Figure 3 It is a structural schematic diagram of a turning frame and a foam model in a flow coating device for lost foam coating according to an embodiment of the present application;

[0022] Figure 4 It is a structural schematic diagram of a turning frame in a flow coating device for lost foam coating according to an embodiment of the present application;

[0023] Figure 5 It is a schematic structural diagram of a fixing device in a flow coating device for lost foam coating according to an embodiment of the present application;

[0024] Figure 6 It is a structural schematic diagram of a spraying device in a flow coating device for lost foam coating according to an embodiment of the present application;

[0025] Figure 7It is a structural schematic diagram of a hoisting device in a flow coating device for lost foam coating according to an embodiment of the present application.

[0026] Description of reference numerals: 1. coating flow coating pool; 2. gantry;

[0027] 3. Turning frame; 31. Rectangular frame; 32. Crossbar; 33. Vertical bar; 34. Reinforcement bar; 35. Universal wheel;

[0028] 4. Spraying device; 41. Stirring drum; 42. Stirring motor; 43. Stirring shaft; 44. Delivery pump; 45. Delivery pipe; 46. Spraying gun;

[0029] 5. Foam model;

[0030] 6. Fixing device; 61. Fixing rod; 62. First fixing block; 63. Second fixing block; 64. Abutting rod; 65. Screw rod; 66. Stop block; 67. Partition plate;

[0031] 7. Lifting device; 71. Winch; 72. Towing rope; 73. Hook; 74. Lifting belt;

[0032] 8. Reflux tank;

[0033] 9. First fixed groove; 10. Second fixed groove; 11. Third fixed groove; 12. Coating liquid groove; 13. Wedge block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 -Attached Figure 7 This application is described in further detail.

[0035] The present application embodiment discloses a flow coating device for lost foam coating. Figure 1-Figure 7 The flow coating device of the lost foam coating comprises a coating flow coating pool 1, a gantry 2, a turning frame 3 and a spraying device 4. The turning frame 3 is used to carry a foam model 5 to be sprayed. A fixing device 6 for fixing the foam model 5 is arranged on the turning frame 3. A hoisting device 7 is arranged on the gantry 2. The hoisting device 7 is used to lift the side of the turning frame 3 so that the turning frame 3 is in an inclined state and the bottom surface of the foam model 5 is in an inclined state with the ground. The spraying device 4 is used to spray the stirred refractory coating onto the foam model 5.

[0036] After the foam model 5 is made, the foam model 5 is transferred to the turning frame 3. At this time, the mass of the foam model 5 is about 20-30kg. Then, the foam model 5 is fixed on the turning frame 3 by the fixing device 6. The spraying device 4 stirs the refractory coating and sprays it onto the foam model 5. When the bottom of the foam model 5 is sprayed, the lifting device 7 acts on the edge of the turning frame 3 to make the turning frame 3 tilt to one side. After the turning frame 3 is tilted, one side of the turning frame 3 is supported on the ground, and then the bottom of the foam model 5 is sprayed (the mass of the foam model 5 after spraying the refractory coating is about 150-200kg). Compared with the brushing of the refractory coating, the brushing effect of the refractory coating is improved; at the same time, the refractory coating sprayed on the surface of the foam model 5 flows on the foam model 5, and the remaining positions are brushed during the flow process. After the flow coating, the surface quality of the foam model 5 is stable, and the abnormal sand sticking phenomenon is reduced.

[0037] Reference Figure 1 and Figure 2 In order to improve the utilization rate of the refractory coating, the gantry 2 spans the coating flow coating pool 1, the turning frame 3 is placed in the coating flow coating pool 1, the bottom surface of the coating flow coating pool 1 is inclined and a reflow groove 8 is provided at the lowest horizontal point, and the excess refractory coating sprayed by the spraying device 4 onto the foam model 5 flows into the coating flow coating pool 1 and flows along the coating flow coating pool 1 to the reflow groove 8.

[0038] The refractory coating dropped from the foam model 5 to the ground flows along the coating flow pool 1 and flows into the reflux groove 8. In the above process, the coating waste is reduced, the coating loss is reduced, the sand sticking phenomenon is reduced, the cleaning efficiency is improved, and the use of oxygen melting rods is reduced, thereby reducing costs.

[0039] Reference Figure 3 and Figure 4 In the embodiment of the present application, the flip frame 3 includes a rectangular frame 31, a cross bar 32, a vertical bar 33 and a reinforcement bar 34. The rectangular frame 31, the cross bar 32, the vertical bar 33 and the reinforcement bar 34 are all square bars. The rectangular frame 31 is rectangular as a whole. The length direction of the vertical bar 33 is parallel to the length direction of the rectangular frame 31 and is fixedly arranged (welded) in the rectangular frame 31. The cross bar 32 is located between the vertical bar 33 and the edge bar of the rectangular frame 31 and is fixedly arranged (welded). The length direction of the cross bar 32 is perpendicular to the length direction of the vertical bar 33. The length direction of the reinforcement bar 34 is parallel to the length direction of the cross bar 32. The reinforcement bar 34 is located at the bottom of the rectangular frame 31 and is fixedly arranged at the bottom of the rectangular frame 31.

[0040] Reference Figure 3 and Figure 4After the foam model 5 is coated with the refractory coating and dried, the foam model 5 needs to be transferred. However, the foam model 5 is heavy and is easily damaged by collision and hoisting during the transfer process. Therefore, in the embodiment of the present application, the flip frame 3 also includes a plurality of universal wheels 35 arranged at the bottom of the vertical rod 33. Under the action of the universal wheels 35, when the foam model 5 is transferred, the flip frame 3 is pushed to drive the foam model 5 to move to the casting location, and then the foam model 5 is hoisted to the casting location. In the above process, the number of hoisting times of the foam model 5 is reduced, and the possibility of damage to the foam model 5 is reduced.

[0041] Reference Figure 4 and Figure 5 In the embodiment of the present application, the fixing device 6 includes a fixing rod 61, a first fixing block 62 and a second fixing block 63. The first fixing block 62 is fixedly arranged at the end of the fixing rod 61. A first fixing groove 9 is provided on the side of the first fixing block 62. The first fixing groove 9 is a rectangular groove. The first fixing groove 9 is used to clamp the reinforcement rod 34. A second fixing groove 10 and a third fixing groove 11 are provided on the second fixing block 63. The axial directions of the second fixing groove 10 and the third fixing groove 11 are perpendicular to each other. The second fixing block 63 is slidably clamped on the fixing rod 61 through the second fixing groove 10; the fixing device 6 also includes an abutting rod 64, which is used to span and press the foam model 5 to the cross bar 32 and the vertical bar 33. The abutting rod 64 is slidably clamped in the third fixing groove 11. The fixing device 6 also includes a first fixing member for fixing the fixing rod 61 and the abutting rod 64 to the second fixing block 63. When the abutting rod 64 abuts and fixes the foam model 5, the opening of the third fixing groove 11 is away from the ground.

[0042] The foam model 5 to be processed is hoisted onto the turning frame 3, and then one end of the fixing rod 61 is clamped on the reinforcing rod 34 through the first fixing groove 9, and then the second fixing block 63 is clamped on the fixing rod 61 through the second fixing groove 10, and the second fixing block 63 is slid to adjust the position of the second fixing block 63 on the fixing rod 61, and then the abutment rod 64 is moved into the third fixing groove 11, and then the height of the abutment rod 64 is adjusted by the second fixing block 63, so that the abutment rod 64 is pressed on the foam model 5, and then the position of the second fixing block 63 and the position of the abutment rod 64 in the third fixing groove 11 are fixed by the first fixing piece, so that the foam model 5 is fixed on the turning frame 3, and the operation is simple and convenient; the foam model 5 is fixed on the turning frame 3 by four fixing rods 61 and two abutment rods 64, thereby reducing the blocked surface of the foam model 5, and facilitating the flow coating of the refractory coating to the contact surface, thereby improving the flow coating effect of the foam model 5.

[0043] Reference Figure 4 and Figure 5In the embodiment of the present application, the first fixing member includes two screws 65 threadedly connected to the second fixing block 63, the two screws 65 are respectively located in the second fixing groove 10 and the third fixing groove 11 and span the second fixing groove 10 and the third fixing groove 11, and the two screws 65 are coaxially arranged, and the ends of the screws 65 abut the fixing rod 61 and the abutting rod 64 respectively; after the fixing rod 61 and the abutting rod 64 are respectively located in the second fixing groove 10 and the third fixing groove 11, the screw 65 is rotated, and the screw 65 moves and abuts on the fixing rod 61 and the abutting rod 64, thereby fixing the fixing rod 61 and the abutting rod 64, and the operation is simple and convenient.

[0044] Reference Figure 5 In order to reduce the possibility of the abutment rod 64 falling off from the third fixed groove 11, a blocking block 66 is provided on the second fixed block 63 and located on the side wall of the third fixed groove 11. The blocking block 66 is used to abut the abutment rod 64 so that the abutment rod 64 is located in the third fixed groove 11; under the action of the blocking block 66, when the flip frame 3 is tilted, the end face of the abutment rod 64 abuts against the bottom surface of the blocking block 66, thereby fixing the abutment rod 64 in the fixing block, thereby improving the fixing effect of the abutment rod 64 on the foam model 5.

[0045] Reference Figure 3 and Figure 4 In order to further improve the flow coating effect of the refractory coating, the cross bar 32 and the vertical bar 33 are used to support the foam model 5. The coating liquid groove 12 is concavely formed in the surface, and the coating liquid groove 12 is used for the refractory coating to flow and the refractory coating is applied to the contact surface between the foam model 5 and the cross bar 32 and the vertical bar 33; the sprayed refractory coating falls on the cross bar 32 and the vertical bar 33, and enters the coating liquid groove 12, and the refractory coating flows along the coating liquid groove 12, and passes through the contact surface between the foam model 5 and the cross bar 32 and the vertical bar 33, so as to be coated on the contact surface of the foam model 5, thereby improving the coating effect of the foam model 5.

[0046] Reference Figure 3 and Figure 4 , further, it also includes a wedge block 13, the wedge block 13 is located on the vertical rod 33, the wedge block 13 is used to slide and snap into the coating liquid tank 12 and drive one side of the foam model 5 to separate from the cross bar 32 and the vertical rod 33 by 2-3mm so that the refractory coating is sprayed on the contact surface; after the flip frame 3 is tilted, the wedge block 13 is slid, and the wedge block 13 flows along the coating liquid tank 12 to push the refractory coating to flow, thereby applying the refractory coating to the contact surface; then the coating effect of the refractory coating is observed, and when the coating thickness of the refractory coating on the contact surface does not meet the standard, a secondary spraying is performed. Because the foam model 5 is in a separated state from the cross bar 32 and the vertical rod 33, the contact surface obtains a better spraying effect during the secondary spraying.

[0047] Reference Figure 3In the embodiment of the present application, the fixing device 6 also includes a partition plate 67, which is located between the fixing rod 61 and the foam model 5, and between the abutting rod 64 and the foam model 5. The partition plate 67 is made of a flexible material. Since the fixing rod 61 and the abutting rod 64 are both metal rods, the hardness of the metal rod is greater than the hardness of the foam model 5, which can easily cause damage to the contact surface of the foam model 5. Under the action of the partition plate 67, the foam model 5 is separated from the fixing rod 61 and the abutting rod 64, thereby reducing the possibility of damage to the foam model 5.

[0048] Reference Figure 6 In the embodiment of the present application, the spraying device 4 includes a stirring drum 41, a stirring member, a delivery pump 44, a delivery pipe 45 and a spray gun 46. The stirring member is used to stir the refractory coating in the stirring drum 41. The stirring member includes a stirring motor 42 and a stirring shaft 43. The stirring shaft 43 is located in the stirring drum 41 and is coaxially arranged on the output shaft of the stirring motor 42. The delivery pump 44 is used to deliver the stirred refractory coating through the delivery pipe 45 to the spray gun 46. The spray gun 46 is used to spray the refractory coating onto the foam model 5; the refractory coating is poured into the stirring drum 41 after proportioning, the stirring motor 42 is started, the stirring motor 42 drives the stirring shaft 43 to rotate, the stirring shaft 43 rotates to stir the refractory coating, and then the delivery pump 44 is started. The delivery pump 44 delivers the refractory coating through the delivery pipe 45 to the spray gun 46 to perform flow coating operation on the foam model 5.

[0049] Reference Figure 7 In the embodiment of the present application, the lifting device 7 includes a winch 71 arranged on the gantry crane, and a traction rope 72 is wound on the winch 71, and a hook 73 is arranged at the end of the traction rope 72; the lifting device 7 also includes a lifting cloth belt 74, which is used to cross the outermost cross bar 32 and then wrap around the cross bar 32 and hang on the hook 73; before the turning frame 3 is turned over, the lifting cloth belt 74 is first wound around the outermost cross bar 32, and then the end of the lifting cloth belt 74 is fixed on the hook 73, and then the winch 71 is started, and the winch 71 winds up the traction rope 72 to drive the rectangular frame 31 to tilt, which is simple and convenient to operate; at the same time, under the action of the lifting cloth belt 74, the lifting load is more evenly distributed on the rectangular frame 31, reducing the possibility of the turning frame 3 being damaged by bending and deformation due to large local load.

[0050] The implementation principle of a flow coating device for lost foam coating in the embodiment of the present application is as follows:

[0051] After the foam model 5 is made, the foam model 5 is transferred to the turning frame 3. At this time, the mass of the foam model 5 is about 20-30 kg. Then, the foam model 5 is fixed to the turning frame 3 by the fixing rod 61 and the abutting rod 64. The spray gun 46 stirs the refractory coating and sprays it onto the foam model 5. When the bottom of the foam model 5 is sprayed, the winch 71 and the lifting cloth belt 74 act on the edge of the turning frame 3 to make the turning frame 3 tilt to one side. After the turning frame 3 is tilted, one side of the turning frame 3 is supported on the ground, and then the bottom of the foam model 5 is sprayed. Spraying (the mass of the foam model 5 after spraying the refractory coating is about 150-200kg) improves the brushing effect of the refractory coating compared with brushing the refractory coating; at the same time, the refractory coating sprayed onto the surface of the foam model 5 flows on the foam model 5, and the remaining positions are brushed during the flow process. After the flow coating, the surface quality of the foam model 5 is stable, and the abnormal sand sticking phenomenon is reduced; at the same time, the foam model 5 is tilted by tilting one side of the flip frame 3 for spraying, which reduces the possibility of damage to the foam model 5 and improves the molding quality of the foam model 5 compared with moving the foam model 5;

[0052] The refractory coating dropped from the foam model 5 to the ground flows along the coating flow pool 1 and flows into the reflux groove 8. In the above process, the coating waste is reduced, the coating loss is reduced, the sand sticking phenomenon is reduced, the cleaning efficiency is improved, and the use of oxygen melting rods is reduced, thereby reducing costs.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flow coating device for lost foam coating, characterized in that: The invention comprises a coating flow coating pool (1), a gantry (2), a turning frame (3) and a spraying device (4), wherein the turning frame (3) is used to carry a foam model (5) to be sprayed, and a fixing device (6) for fixing the foam model (5) is arranged on the turning frame (3), and a lifting device (7) is arranged on the gantry (2), and the lifting device (7) is used to lift the side of the turning frame (3), so that the turning frame (3) is in an inclined state and the bottom surface of the foam model (5) is in an inclined state with respect to the ground, and the spraying device (4) is used to spray the stirred refractory coating onto the foam model (5), and the bottom surface of the coating flow coating pool (1) is inclined and a reflow groove (8) is arranged at the lowest horizontal point, and the excess refractory coating sprayed onto the foam model (5) by the spraying device (4) flows into the coating flow coating pool (1) and flows along the coating flow coating pool (1) into the reflow groove (8); The turning frame (3) comprises a rectangular frame (31), a cross bar (32), a vertical bar (33) and a reinforcement bar (34); the length direction of the vertical bar (33) is parallel to the length direction of the rectangular frame (31) and is fixedly arranged in the rectangular frame (31); the cross bar (32) is located between the vertical bar (33) and the edge bar of the rectangular frame (31) and is fixedly arranged; the length direction of the cross bar (32) is perpendicular to the length direction of the vertical bar (33); the length direction of the reinforcement bar (34) is parallel to the length direction of the cross bar (32); the reinforcement bar (34) is located at the bottom of the rectangular frame (31) and is fixedly arranged at the bottom of the rectangular frame (31); the turning frame (3) further comprises a plurality of universal wheels (35) arranged at the bottom of the vertical bar (33); The cross bar (32) and the vertical bar (33) are used to support the foam model (5) and are concavely formed with a coating liquid groove (12), and the coating liquid groove (12) allows the refractory coating to flow and allows the refractory coating to be coated on the contact surface between the foam model (5) and the cross bar (32) and the vertical bar (33); It also includes a wedge block (13) which is used to slide and engage in the coating liquid tank (12) and drive one side of the foam model (5) to separate from the horizontal rod (32) and the vertical rod (33) by 2-3 mm so that the refractory coating is sprayed on the contact surface; The fixing device (6) comprises a fixing rod (61), a first fixing block (62) and a second fixing block (63); the first fixing block (62) is fixedly arranged at the end of the fixing rod (61); a first fixing groove (9) is provided on the side of the first fixing block (62); the first fixing groove (9) is used for clamping the reinforcing rod (34); a second fixing groove (10) and a third fixing groove (11) are provided on the second fixing block (63); the axial directions of the second fixing groove (10) and the third fixing groove (11) are perpendicular to each other; the second fixing block (63) is provided with a second fixing groove (10) and a third fixing groove (11) through which the second fixing block (63) is fixed; The fixed groove (10) is slidably engaged with the fixed rod (61); the fixing device (6) further comprises an abutting rod (64), the abutting rod (64) is used to span and press the foam model (5) to the cross bar (32) and the vertical bar (33), the abutting rod (64) is slidably engaged in the third fixed groove (11), and the fixing device (6) further comprises a first fixing member used to fix the fixed rod (61) and the abutting rod (64) to the second fixed block (63); when the abutting rod (64) abuts and fixes the foam model (5), the opening of the third fixed groove (11) is away from the ground.

2. A flow coating device for lost foam coating according to claim 1, characterized in that: The first fixing member comprises two screw rods (65) threadedly connected to the second fixing block (63); the two screw rods (65) are respectively located in the second fixing groove (10) and the third fixing groove (11) and span the second fixing groove (10) and the third fixing groove (11); the two screw rods (65) are coaxially arranged, and the ends of the screw rods (65) respectively abut against the fixing rod (61) and the abutting rod (64).

3. A flow coating device for lost foam coating according to claim 2, characterized in that: A blocking block (66) is provided on the second fixing block (63) and located on the side wall of the third fixing groove (11); the blocking block (66) is used to abut against the abutting rod (64) so ​​that the abutting rod (64) is located in the third fixing groove (11).

4. A flow coating device for lost foam coating according to claim 1, characterized in that: The fixing device (6) further comprises a partition plate (67), wherein the partition plate (67) is located between the fixing rod (61) and the foam model (5), and between the abutting rod (64) and the foam model (5), and the partition plate (67) is made of a flexible material.

5. A flow coating device for lost foam coating according to claim 1, characterized in that: The spraying device (4) comprises a stirring drum (41), a stirring member, a delivery pump (44), a delivery pipe (45) and a spraying gun (46); the stirring member is used to stir the refractory coating in the stirring drum (41); the delivery pump (44) is used to deliver the stirred refractory coating to the spraying gun (46) through the delivery pipe (45); and the spraying gun (46) is used to spray the refractory coating onto the foam model (5).

6. A flow coating device for lost foam coating according to claim 1, characterized in that: The hoisting device (7) comprises a hoisting machine (71) arranged on the gantry crane, a traction rope (72) is wound on the hoisting machine (71), and a hook (73) is arranged at the end of the traction rope (72); the hoisting device (7) also comprises a hoisting cloth belt (74), and the hoisting cloth belt (74) is used to cross the outermost cross bar (32) and then wrap around the cross bar (32) and hang on the hook (73).

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