A large bracket casting method and foam mold thereof

Abstract

The present invention belongs to the field of casting technology, and specifically relates to a large bracket casting method and its foam mold, including the following steps: A. Selecting a foam block of suitable size; B. Using a cutting and hot cutting machine to roughly cut the foam block according to the drawing; C. Using an engraving machine to carefully engrave the cut foam block according to the drawing; D. Spraying barrier materials on the engraved foam block and drying it; E. Packing, adding sand and vacuum re-pressing; F. Pouring, and demolding after cooling; G. Polishing the surface of the cast large bracket, and tempering and spraying paint. The present invention provides a large bracket casting method, which selects a whole foam block, and first uses a cutting and hot cutting machine to cut the whole foam block into a rough shape to save engraving time, and then carefully engraves to form an integrated foam mold, which does not require splicing and increases efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of casting, and in particular relates to a large bracket casting method and a foam mold thereof. Background Art

[0002] Lost foam is a casting technology that uses a foam mold to place into a casting mold, fill it with dry sand, and then pour liquid metal into the foam mold. This casting technology has many advantages.

[0003] However, due to the large size of the existing foam molds, it takes a long time to carve them using a single engraving machine, and a lot of debris is generated. Therefore, it is usually necessary to divide the foam block into multiple pieces, and engrave the multiple foam blocks separately, and then splice the multiple small foam molds into a large foam mold, so that multiple foam molds need to be processed and then spliced, which is time-consuming, and the splicing is prone to bulges or depressions during casting, which requires further processing later. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a large bracket casting method and a foam mold thereof, which can be formed in one step without the need for block carving, thereby increasing efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a large bracket casting method, comprising the following steps:

[0006] A. Select foam blocks of appropriate size;

[0007] B. Use a cutting and hot cutting machine to roughly cut the foam blocks according to the drawings;

[0008] C. Use an engraving machine to carefully carve the cut foam blocks according to the drawings;

[0009] D. spraying barrier material on the carved foam block and drying it;

[0010] E. Packing, adding sand and vacuum re-pressing;

[0011] F. Casting and demoulding after cooling;

[0012] G. The surface of the cast large bracket is polished and tempered and painted.

[0013] In step B, the cutting and hot cutting machine includes a first support seat, a first movable gantry, a first rotating seat, a first clamping assembly and a hot cutting lifting assembly, wherein the first movable gantry is movably mounted on the first support seat, the first rotating seat is rotatably mounted on the first support seat, the first clamping assembly is mounted on the first support seat, a first driving screw device is mounted on the first movable gantry, the hot cutting lifting assembly is mounted on the driving end of the first driving screw device, the hot cutting lifting assembly includes a first screw lifting assembly, a heating seat, a rotating wheel and a heating wire, the first screw lifting assembly is mounted on the driving end of the first driving screw device, the heating seat is mounted on the lifting end of the first screw lifting assembly, the rotating wheel is rotatably mounted in the heating seat, one end of the heating wire is connected to the heating end of the heating seat, and the other end is wound around the rotating wheel;

[0014] A shaping device for shaping the heating wire is also installed on the first support seat, and the shaping device includes a first shaping component and a second shaping component. The first shaping component is located above the second shaping component. The first shaping component includes a first mounting seat and multiple guide rails. The multiple guide rails are equidistantly arranged around the center point of the first mounting seat, and a first driving seat is movably installed on each guide rail. A first shaping rod is swingably installed on the first driving seat, and a first driving motor that drives the first shaping rod to swing is installed on the first driving seat. The second shaping component includes a second mounting seat, two rotating motors and two swinging rails. The two rotating motors are coaxially installed at the center position of the second mounting seat, and the two swinging rails are respectively installed on the output ends of the two rotating motors. A second driving seat is movably installed on the two swinging rails, and a second shaping rod is swingably installed on the second driving seat. A second driving motor that drives the second shaping rod to swing is installed on the second driving seat.

[0015] The first clamping assembly includes two first cylinders and two first rotating motors. The two first cylinders are symmetrically arranged with their output ends facing each other. The two first rotating motors are respectively mounted on the output ends of the two first cylinders, and a first clamping plate is mounted on the rotating end of the first rotating motor.

[0016] The first driving screw device includes a first rotating screw and a first screw driver. The first rotating screw is rotatably mounted on the first movable gantry. The first screw driver is mounted on the first movable gantry and is transmission-connected to the first rotating screw.

[0017] The first screw lifting assembly includes a first lifting frame, a first lifting screw and a first lifting drive machine. The first lifting screw is rotatably mounted on the first lifting frame and passes through the bottom end of the first lifting frame. The heating seat is mounted on the bottom end of the first lifting screw. The first lifting drive machine is mounted on the first lifting frame and is transmission-connected to the first lifting screw.

[0018] In step C, the engraving machine includes a second support seat, a second movable gantry, a second rotating seat, a second clamping assembly and a lifting engraving assembly, the second movable gantry is movably installed on the second support seat, the second rotating seat is rotatably installed on the second support seat, the second support seat is installed with a fly-proof fence surrounding the second rotating seat, the second clamping assembly is installed on the second rotating seat and is located in the fly-proof fence, the second movable gantry is installed with a second driving screw device, the lifting engraving assembly is installed on the driving end of the second driving screw device, the bottom of the second support seat is hollowed out, and a storage drawer is provided at the hollow position of the second support seat, the bottom of the storage drawer is provided with an electrostatic adsorption layer, and an electrostatic generator is installed under the electrostatic adsorption layer.

[0019] The lifting engraving assembly includes a second lifting frame, a second lifting screw, a second lifting drive and an engraving head. The second lifting screw is rotatably mounted on the second lifting frame and passes through the bottom end of the second lifting frame. The engraving head is mounted on the bottom end of the second lifting screw. The second lifting drive is mounted on the second lifting frame and is transmission-connected to the second lifting screw.

[0020] The engraving head is provided with a debris suction assembly, which includes a mounting frame and two debris suction barrels. The mounting frame is installed on the engraving head, and the mounting frame is provided with an air outlet pipe arranged around the engraving knife of the engraving head. The mounting frame is provided with an air pump connected to the air outlet pipe. The two debris suction barrels are symmetrically installed on the mounting frame, and the suction ports of the debris suction barrels are arranged downward.

[0021] The second clamping assembly includes two second cylinders and two second rotating motors. The two second cylinders are symmetrically arranged with output ends facing each other. The two second rotating motors are respectively installed on the output ends of the two second cylinders, and a second clamping plate is installed on the rotating end of the second rotating motor.

[0022] The second driving screw device includes a second rotating screw and a second screw driver. The second rotating screw is rotatably mounted on the second movable gantry. The second screw driver is mounted on the second movable gantry and is transmission-connected to the second rotating screw.

[0023] The one-piece foam mold is characterized by comprising a lower bracket and an upper bracket, wherein the lower bracket and the upper bracket are formed in an integrated manner.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. A large bracket casting method of the present invention selects a whole foam block, and first uses a cutting and hot cutting machine to cut the whole foam block into a rough shape to save carving time, and then carefully carves to form an integrated foam mold, which does not require splicing and increases efficiency.

[0026] 2. The present invention provides a large bracket casting method. When hot cutting is performed, a selected foam block is placed on a first clamping assembly, and is clamped and fixed by the first clamping assembly. Then, according to the needs of cutting, the wheel is rotated to scale the heating wire. Then, the heating wire is moved and placed on the first shaping assembly or the second shaping assembly through the first movable gantry in cooperation with the first lead screw lifting assembly. When the heating wire is to be adjusted into a polygon, the first driving seat can be moved to adjust the position, and the first shaping rod can be used to push against the heating wire, and the first driving seat can be used to cooperate with the first shaping rod to pull, so as to adjust the heating wire to a desired shape. When the heating wire is to be adjusted into a circle or an ellipse, the second driving seat can be moved to adjust the position, and the second shaping rod can be used to push against the heating wire, and the second driving seat can be used to cooperate with the second shaping rod to pull, so as to adjust the heating wire to a desired shape. Therefore, the shape of the heating wire can be easily adjusted to adapt to the cutting of foam blocks of different shapes, thereby increasing the cutting efficiency.

[0027] 3. A large bracket casting method of the present invention comprises the following steps: fixing the cut foam block on a second clamping assembly, and carving the foam block through a second movable gantry in cooperation with a second rotating seat, a second clamping assembly and a lifting carving assembly to form a mold, and carving debris falls into a storage drawer, and an electrostatic generator generates static electricity on the electrostatic adsorption layer, so that the debris is firmly placed in the storage drawer and does not fly around.

[0028] 4. The present invention provides a large-scale bracket casting method, wherein the air pump on the debris suction component blows air toward the carving knife through the air outlet pipe, so that the debris attached to the carving head carving knife is blown away, preventing the debris from being attached to the carving head carving knife for a long time and being heated by the rotation of the carving knife to stick to the carving knife, causing the carving knife to malfunction, and the flying debris can be collected by the debris suction barrel.

[0029] 5. The one-piece foam mold of the present invention prevents the joints from being easily convex or concave during casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the hot cutting machine of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the hot-cut lifting assembly of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the heating seat of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the first shaping component and the second shaping component of the present invention;

[0034] Figure 5 It is an enlarged structural schematic diagram of the guide track of the present invention;

[0035] Figure 6 It is a schematic diagram of the enlarged structure of the swing track of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the first clamping assembly of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the engraving machine of the present invention;

[0038] Fig. 9 A schematic diagram of the structure of the second support base of the present invention;

[0039] Fig.10 It is a structural schematic diagram of the storage drawer of the present invention;

[0040] Fig.11 It is a structural schematic diagram of the lifting engraving assembly of the present invention;

[0041] Fig.12 It is a schematic structural diagram of the debris suction assembly of the present invention;

[0042] Fig.13 is a schematic structural diagram of a second clamping assembly of the present invention;

[0043] Fig.14 It is a structural schematic diagram of the integrally formed foam mold of the present invention.

[0044] Markings in the figure: 1, cutting and hot cutting machine; 11, first supporting seat; 12, first moving gantry; 13, first rotating seat; 14, first clamping assembly; 15, hot cutting lifting assembly; 16, first screw lifting assembly; 17, heating seat; 18, rotating wheel; 19, heating wire; 110, first shaping assembly; 111, second shaping assembly; 112, first mounting seat; 113, guide rail; 114, first driving seat; 115, first shaping rod; 116, second mounting seat; 117, rotating motor; 118, swinging rail; 119, second driving seat; 120, second shaping rod; 121, first cylinder; 122, first rotating motor; 123, first clamping plate;

[0045] 2. Engraving machine; 21. Second support seat; 22. Second mobile gantry; 23. Second rotating seat; 24. Second clamping assembly; 25. Lifting engraving assembly; 26. Anti-fly fence; 27. Storage drawer; 28. Electrostatic adsorption layer; 29. ​​Electrostatic generator; 210. Second lifting frame; 211. Second lifting screw; 212. Second lifting drive; 213. Engraving head; 214. Debris suction assembly; 215. Mounting frame; 216. Debris suction barrel; 217. Exhaust pipe; 218. Air pump; 219. Second cylinder; 220. Second rotating motor; 221. Second clamping plate;

[0046] 3. Lower bracket; 4. Upper bracket. DETAILED DESCRIPTION

[0047] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0048] like Figure 1-Figure 14 As shown, this embodiment provides a large bracket casting method, comprising the following steps:

[0049] A. Select foam blocks of appropriate size;

[0050] B. Use the cutting and hot cutting machine 1 to roughly cut the foam block according to the drawing;

[0051] C. Carve the cut foam blocks in detail using engraving machine 2 according to the drawing;

[0052] D. spraying barrier material on the carved foam block and drying it;

[0053] E. Packing, adding sand and vacuum re-pressing;

[0054] F. Casting and demoulding after cooling;

[0055] G. The surface of the cast large bracket is polished and tempered and painted.

[0056] Select a whole foam block, and first use the hot cutting machine 1 to cut the whole foam block into a rough shape to save carving time, and then carefully carve to form an integrated foam mold, which does not need to be spliced ​​and increases efficiency.

[0057] Further, in step B, the cutting and hot cutting machine 1 includes a first support seat 11, a first mobile gantry 12, a first rotating seat 13, a first clamping assembly 14 and a hot cutting lifting assembly 15, the first mobile gantry 12 is movably mounted on the first support seat 11, the first rotating seat 13 is rotatably mounted on the first support seat 11, the first clamping assembly 14 is mounted on the first support seat 11, the first mobile gantry 12 is mounted with a first driving screw device, the hot cutting lifting assembly 15 is mounted on the driving end of the first driving screw device, and the hot cutting lifting assembly 15 is mounted on the driving end of the first driving screw device. The assembly 15 includes a first screw lifting assembly 16, a heating seat 17, a rotating wheel 18 and a heating wire 19. The first screw lifting assembly 16 is installed on the driving end of the first driving screw device, the heating seat 17 is installed on the lifting end of the first screw lifting assembly 16, the rotating wheel 18 is rotatably installed in the heating seat 17, one end of the heating wire 19 is connected to the heating end of the heating seat 17, and the other end is wound around the rotating wheel 18; specifically, a shaping device for shaping the heating wire 19 is also installed on the first support seat 11, and the shaping device includes a first shaping device. The first shaping assembly 110 and the second shaping assembly 111, the first shaping assembly 110 is located above the second shaping assembly 111, the first shaping assembly 110 includes a first mounting seat 112 and a plurality of guide rails 113, the plurality of guide rails 113 are equidistantly arranged around the center point of the first mounting seat 112, and a first driving seat 114 is movably mounted on each guide rail 113, a first shaping rod 115 is swingably mounted on the first driving seat 114, and a first driving horse 115 for driving the first shaping rod 115 to swing is mounted on the first driving seat 114. The second shaping component 111 includes a second mounting seat 116, two rotating motors 117 and two swinging rails 118. The two rotating motors 117 are coaxially mounted at the center of the second mounting seat 116. The two swinging rails 118 are respectively mounted on the output ends of the two rotating motors 117. Second driving seats 119 are respectively movably mounted on the two swinging rails 118. A second shaping rod 120 is swingably mounted on the second driving seat 119. A second driving motor for driving the second shaping rod 120 to swing is installed on the second driving seat 119.When hot cutting is performed, the selected foam block is placed on the first clamping assembly 14, and is clamped and fixed by the first clamping assembly 14. Then, according to the needs of cutting, the rotating wheel 18 scales the heating wire 19, and then the first movable gantry 12 cooperates with the first screw lifting assembly 16 to move the heating wire 19 to the first shaping assembly 110 or the second shaping assembly 111. When the heating wire 19 is to be adjusted to a polygon, the first driving seat 114 can be moved to adjust the position, and the first shaping rod 115 can be used to push the heating wire 19, and the first driving seat 114 cooperates with the first shaping rod 115 to pull, so as to adjust the heating wire 19 to a desired shape. When the heating wire 19 is to be adjusted to a circular or elliptical shape, the second driving seat 119 can be moved to adjust the position, and the second shaping rod 120 can be used to push the heating wire 19, and the second driving seat 119 cooperates with the second shaping rod 120 to pull, so as to adjust the heating wire 19 to a desired shape, so that the shape of the heating wire 19 can be easily adjusted to adapt to the cutting of foam blocks of different shapes, thereby increasing the cutting efficiency.

[0058] Further, the first clamping assembly 14 includes two first cylinders 121 and two first rotating motors 122. The two first cylinders 121 are symmetrically arranged, and the output ends are arranged facing each other. The two first rotating motors 122 are respectively installed on the output ends of the two first cylinders 121, and the rotating ends of the first rotating motors 122 are installed with first clamping plates 123. The first rotating motors 122 are driven by the first cylinders 121 to clamp and fix the foam block through the first clamping plates 123, and the foam block can be driven to flip by the first rotating motors 122.

[0059] Further, the first driving screw device includes a first rotating screw and a first screw driver, the first rotating screw is rotatably mounted on the first mobile gantry 12, the first screw driver is mounted on the first mobile gantry 12, and is in driving connection with the first rotating screw. Specifically, the first screw lifting assembly 16 is in driving connection with the first rotating screw, and the first rotating screw is driven to rotate by the first screw driver, thereby driving the first screw lifting assembly 16 to move laterally.

[0060] Further, the first screw lifting assembly 16 includes a first lifting frame, a first lifting screw and a first lifting drive. The first lifting screw is rotatably mounted on the first lifting frame and is arranged through the bottom end of the first lifting frame. The heating seat 17 is mounted on the bottom end of the first lifting screw. The first lifting drive is mounted on the first lifting frame and is connected to the first lifting screw. Specifically, the heating seat 17 is rotatably connected to the bottom end of the first lifting screw and is provided with a guide rod, which is slidably connected to the first lifting frame. The first lifting drive drives the first lifting screw to rotate, thereby driving the heating seat 17 to rise and fall.

[0061] Further, in step C, the engraving machine 2 includes a second support seat 21, a second movable gantry 22, a second rotating seat 23, a second clamping assembly 24 and a lifting engraving assembly 25. The second movable gantry 22 is movably installed on the second support seat 21, the second rotating seat 23 is rotatably installed on the second support seat 21, and a fly-proof fence 26 surrounding the second rotating seat 23 is installed on the second support seat 21. The second clamping assembly 24 is installed on the second rotating seat 23 and is located in the fly-proof fence 26. The second movable gantry 22 is installed with a second driving screw device, and the lifting engraving assembly 25 is installed on the driving end of the second driving screw device. The bottom of the second support seat 21 is hollowed out, and a storage drawer 27 is provided at the hollow position of the second support seat 21. The bottom of the storage drawer 27 is provided with an electrostatic adsorption layer 28, and an electrostatic generator 29 is installed below the electrostatic adsorption layer 28. The cut foam block is now fixed on the second clamping assembly 24, and the foam block is engraved through the second movable gantry 22 in cooperation with the second rotating seat 23, the second clamping assembly 24 and the lifting engraving assembly 25 to form a mold, and the engraved debris falls into the storage drawer 27, and the static electricity is generated on the static adsorption layer 28 through the static electricity generator 29, so that the debris is firmly placed in the storage drawer 27 and will not fly around.

[0062] Furthermore, the lifting and engraving assembly 25 includes a second lifting frame 210, a second lifting screw 211, a second lifting drive 212 and an engraving head 213. The second lifting screw 211 is rotatably mounted on the second lifting frame 210 and is arranged to pass through the bottom end of the second lifting frame 210. The engraving head 213 is mounted on the bottom end of the second lifting screw 211. The second lifting drive 212 is mounted on the second lifting frame 210 and is transmission-connected to the second lifting screw 211. The engraving head 213 is rotatably connected to the bottom end of the second lifting screw 211 and is provided with a guide rod, which is slidingly connected to the second lifting frame 210. Specifically, a debris suction component 214 is installed on the engraving head 213, and the debris suction component 214 includes a mounting frame 215 and two debris suction barrels 216. The mounting frame 215 is installed on the engraving head 213, and the mounting frame 215 is provided with an air outlet pipe 217 arranged around the engraving knife of the engraving head 213. An air pump 218 connected to the air outlet pipe is installed on the mounting frame 215. The two debris suction barrels 216 are symmetrically installed on the mounting frame 215, and the suction port of the debris suction barrel 216 is set downward. The second lifting drive motor 212 drives the second lifting screw 211 to rotate, thereby driving the engraving head 213 to move up and down for engraving, and the air pump 218 on its debris suction component 214 blows air to the engraving knife through the air outlet pipe 217, so that the debris attached to the engraving knife of the engraving head 213 is blown away, preventing the engraving knife from being heated by the rotation of the engraving knife and sticking to the engraving knife for a long time, causing the engraving knife to malfunction, and the flying debris can be collected by the debris suction barrel 216.

[0063] Further, the second clamping assembly 24 includes two second cylinders 219 and two second rotating motors 220. The two second cylinders 219 are symmetrically arranged, and the output ends are arranged facing each other. The two second rotating motors 220 are respectively installed on the output ends of the two second cylinders 219, and a second clamping plate 221 is installed on the rotating end of the second rotating motor 220. The second rotating motor 220 is driven by the second cylinder 219 to clamp and fix the foam block through the second clamping plate 221, and the foam block can be driven to flip by the second rotating motor 220.

[0064] Further, the second driving screw device includes a second rotating screw and a second screw driver, the second rotating screw is rotatably mounted on the second mobile gantry 22, the second screw driver is mounted on the second mobile gantry 22, and is transmission-connected to the second rotating screw. Specifically, the second screw lifting assembly is transmission-connected to the second rotating screw, and the second rotating screw is driven to rotate by the second screw driver, thereby driving the second screw lifting assembly to move laterally.

[0065] The integrally formed foam mold is characterized in that it comprises a lower bracket 3 and an upper bracket 4, wherein the lower bracket 3 and the upper bracket 4 are integrally formed. The integral forming prevents the joint from being easily convex or concave during casting.

[0066] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A large bracket casting method, characterized in that: The steps include: A. Select foam blocks of appropriate size; B. Use a cutting and hot cutting machine to roughly cut the foam blocks according to the drawings; C. Use an engraving machine to carefully carve the cut foam blocks according to the drawings; D. spraying barrier material on the carved foam block and drying it; E. Packing, adding sand and vacuum re-pressing; F. Casting and demoulding after cooling; G. Polish the surface of the cast large bracket, and temper and spray paint; In step B, the cutting and hot cutting machine includes a first support seat, a first movable gantry, a first rotating seat, a first clamping assembly and a hot cutting lifting assembly, wherein the first movable gantry is movably mounted on the first support seat, the first rotating seat is rotatably mounted on the first support seat, the first clamping assembly is mounted on the first support seat, a first driving screw device is mounted on the first movable gantry, the hot cutting lifting assembly is mounted on the driving end of the first driving screw device, the hot cutting lifting assembly includes a first screw lifting assembly, a heating seat, a rotating wheel and a heating wire, the first screw lifting assembly is mounted on the driving end of the first driving screw device, the heating seat is mounted on the lifting end of the first screw lifting assembly, the rotating wheel is rotatably mounted in the heating seat, one end of the heating wire is connected to the heating end of the heating seat, and the other end is wound around the rotating wheel; The first support seat is also equipped with a shaping device for shaping the heating wire, and the shaping device includes a first shaping component and a second shaping component, the first shaping component is located above the second shaping component, the first shaping component includes a first mounting seat and a plurality of guide rails, the plurality of guide rails are equidistantly arranged around the center point of the first mounting seat, and a first driving seat is movably installed on each guide rail, a first shaping rod is swingably installed on the first driving seat, a first driving motor that drives the first shaping rod to swing is installed on the first driving seat, the second shaping component includes a second mounting seat, two rotating motors and two swinging rails, the two rotating motors are coaxially installed at the center position of the second mounting seat, the two swinging rails are respectively installed on the output ends of the two rotating motors, a second driving seat is movably installed on the two swinging rails, a second shaping rod is swingably installed on the second driving seat, and a second driving motor that drives the second shaping rod to swing is installed on the second driving seat; In step C, the engraving machine includes a second support seat, a second movable gantry, a second rotating seat, a second clamping assembly and a lifting engraving assembly, the second movable gantry is movably installed on the second support seat, the second rotating seat is rotatably installed on the second support seat, the second support seat is installed with a fly-proof fence surrounding the second rotating seat, the second clamping assembly is installed on the second rotating seat and is located in the fly-proof fence, the second movable gantry is installed with a second driving screw device, the lifting engraving assembly is installed on the driving end of the second driving screw device, the bottom of the second support seat is hollowed out, and a storage drawer is provided at the hollow position of the second support seat, the bottom of the storage drawer is provided with an electrostatic adsorption layer, and an electrostatic generator is installed under the electrostatic adsorption layer.

2. A large bracket casting method according to claim 1, characterized in that: The first clamping assembly includes two first cylinders and two first rotating motors. The two first cylinders are symmetrically arranged with their output ends facing each other. The two first rotating motors are respectively mounted on the output ends of the two first cylinders, and a first clamping plate is mounted on the rotating end of the first rotating motor.

3. A large bracket casting method according to claim 1, characterized in that: The first driving screw device includes a first rotating screw and a first screw driver. The first rotating screw is rotatably mounted on the first movable gantry. The first screw driver is mounted on the first movable gantry and is transmission-connected to the first rotating screw.

4. A large bracket casting method according to claim 1, characterized in that: The first screw lifting assembly includes a first lifting frame, a first lifting screw and a first lifting drive machine. The first lifting screw is rotatably mounted on the first lifting frame and passes through the bottom end of the first lifting frame. The heating seat is mounted on the bottom end of the first lifting screw. The first lifting drive machine is mounted on the first lifting frame and is transmission-connected to the first lifting screw.

5. A large bracket casting method according to claim 1, characterized in that: The lifting engraving assembly includes a second lifting frame, a second lifting screw, a second lifting drive and an engraving head. The second lifting screw is rotatably mounted on the second lifting frame and passes through the bottom end of the second lifting frame. The engraving head is mounted on the bottom end of the second lifting screw. The second lifting drive is mounted on the second lifting frame and is transmission-connected to the second lifting screw. The engraving head is provided with a debris suction assembly, which includes a mounting frame and two debris suction barrels. The mounting frame is installed on the engraving head, and the mounting frame is provided with an air outlet pipe arranged around the engraving knife of the engraving head. The mounting frame is provided with an air pump connected to the air outlet pipe. The two debris suction barrels are symmetrically installed on the mounting frame, and the suction ports of the debris suction barrels are arranged downward.

6. A large bracket casting method according to claim 1, characterized in that: The second clamping assembly includes two second cylinders and two second rotating motors. The two second cylinders are symmetrically arranged with output ends facing each other. The two second rotating motors are respectively installed on the output ends of the two second cylinders, and a second clamping plate is installed on the rotating end of the second rotating motor.

7. A large bracket casting method according to claim 1, characterized in that: The second driving screw device includes a second rotating screw and a second screw driver. The second rotating screw is rotatably mounted on the second movable gantry. The second screw driver is mounted on the second movable gantry and is transmission-connected to the second rotating screw.

8. An integrally formed foam mold prepared by a large bracket casting method according to any one of claims 1 to 7, characterized in that: It comprises a lower bracket and an upper bracket, wherein the lower bracket and the upper bracket are integrally formed.

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