A car model processing equipment

Abstract

The present invention belongs to the technical field of vehicle model processing equipment, and specifically is a vehicle model processing equipment, including a laser 3D printing device, the laser 3D printing device including a powder supply bin, a laser component and a molding chamber fixedly installed therein, a lower material bin fixedly installed directly below the powder supply bin, a heater fixedly installed on the side of the lower material bin, a plurality of positive inclined plates and reverse inclined plates fixedly installed inside the powder supply bin, the powder inside the powder supply bin is distributed on the upper side surfaces of the plurality of positive inclined plates and reverse inclined plates, the baffle plate is in an upward vertical state, and is used to prevent the powder on the positive inclined plate or the reverse inclined plate from falling, the upper side surfaces of the multiple layers of positive inclined plates and reverse inclined plates arranged inside the powder supply bin are used to place powder, the temperature inside the powder supply bin rises under the action of the heater, and the arrangement of multiple layers of powder can make the temperature of the powder itself closer to the processing temperature.

Description

Technical Field

[0001] The invention belongs to the field of car model processing equipment, in particular to a car model processing equipment. Background Art

[0002] The full name of car model is automobile model. Car model refers to a small model made according to the proportions and appearance of a real car. The processing of car model parts usually adopts laser sintering 3D printing. The powder material (usually plastic, metal or ceramic) is sintered layer by layer into the desired object shape by laser controlled by a computer program, and the powder is crystallized to form parts. The car model processing equipment using laser sintering 3D printing can minimize material waste.

[0003] When the car model needs to be processed, when the laser sintering 3D printing equipment is working, powder is supplied to the drum structure through the powder supply bin. The powder is first spread on the platform in a layer using the drum structure, and then the emitted laser is used to sinter part of the powder on this plane. After completing this step, the platform drops, and the drum spreads the powder again to cover the previously sintered part, and then the emitted laser is used to sinter the spread powder this time. In order to ensure the sintering effect of the powder, a heating structure is usually set in the space where the powder exists, so that the temperature of the space where the powder is located is close to the melting point or sintering point of the powder, so that the subsequent laser sintering efficiency is faster. The powder inside the powder supply bin of the traditional car model processing equipment is piled up together, and only the outermost layer of powder can be affected by the temperature, so that the temperature of this layer of powder is close to the melting point or sintering point of the powder. This causes the powder released from the powder supply bin to the drum structure not to be at the most suitable temperature for laser sintering, which in turn causes problems such as insufficient interlayer bonding or rough surface of the parts produced by subsequent laser sintering.

[0004] To this end, the present invention provides a vehicle model processing equipment. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a car model processing device described in the present invention includes a laser 3D printing device, the laser 3D printing device includes a body, a powder supply bin, a laser assembly and a molding chamber are fixedly installed inside the body, a lower material bin is fixedly installed directly below the powder supply bin, a powder spreading roller is movably installed on the upper side of the molding chamber, a printing lifting platform is lifted and installed inside the molding chamber, the lower material bin is used to transport the dust inside the powder supply bin to the powder spreading roller, a heater is fixedly installed on the side of the lower material bin, and the heater is located directly above the molding chamber;

[0007] A plurality of positive inclined plates and reverse inclined plates are fixedly installed inside the powder supply bin, wherein the positive inclined plate and the reverse inclined plate form a group, and the corresponding reverse inclined plate is located directly below the positive inclined plate. The positive inclined plate and the reverse inclined plate are components made of the same structure and face oppositely. A material baffle plate is rotatably provided on one side of the positive inclined plate, and a ventilation pipe is fixedly installed on the lower side of the powder supply bin.

[0008] Preferably, a chamber cavity is provided inside the powder supply bin, a plurality of the positively inclined plates and the reversely inclined plates are fixedly installed inside the chamber cavity, and an upper cover plate is movably installed on the upper side of the powder supply bin.

[0009] Preferably, a ventilation pipe is fixedly installed on the lower side of the powder supply bin, and the ventilation pipe is used to transmit the air heated by the heater into the bin cavity. The lower side of the powder supply bin is also provided with an inclined groove, and a prefabricated strip is fixedly installed on the lower side of the powder supply bin, and the inclined groove is used to connect the bin cavity and the prefabricated strip.

[0010] Preferably, the positive inclined plate includes a material placing plate and two fixed blocks fixed inside the chamber, a plurality of ventilation blocks are fixedly installed on the upper side of the material placing plate, the ventilation blocks are arranged in a fine rhombus shape, and a slope block is arranged on the side of the fixed block facing the material placing plate, and the slope block is fixedly connected to the material placing plate.

[0011] Preferably, a ventilation slot is provided inside the ventilation block, and the ventilation slot passes through the material placement plate.

[0012] Preferably, a rotating shaft is fixedly installed on the lower side of the material baffle plate, and the rotating shaft is rotatably installed on the lower side of one end of the material placement plate. One end of the rotating shaft is connected to a fixed motor through an axis, and the fixed motor is fixedly installed inside the corresponding fixed block.

[0013] Preferably, the laser assembly includes a laser box fixedly installed inside the laser 3D printing device, a first lens is fixedly installed on the inner bottom of the laser box, a laser generator is fixedly installed on the side of the laser box, a first rotating motor is fixedly installed on the inner top of the laser box, the lower end of the first rotating motor is fixedly connected to the first reflector via an output shaft, a second rotating motor is fixedly installed on the inner side wall of the laser box, and one end of the second rotating motor is fixedly connected to the second reflector via an output shaft.

[0014] Preferably, a glass cylinder is fixedly mounted on the side of the laser box facing the prefabricated strip, the glass cylinder is used to connect the laser box and the prefabricated strip, and a miniature camera is fixedly mounted on the inner wall of the glass cylinder.

[0015] Preferably, the first reflector and the second reflector are rotated to change the angle at which the laser is emitted by the laser generator.

[0016] Preferably, a feed trough is opened inside the prefabricated strip, an electric telescopic column is fixedly installed inside the feed trough, a sliding plug is fixedly installed at one end of the electric telescopic column, the sliding plug is slidably installed inside the feed trough, and a second lens is fixedly installed on the side of the prefabricated strip facing the laser box, and the second lens is fixedly connected to the glass tube.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A car model processing equipment described in the present invention distributes the powder inside the powder supply bin on the upper sides of multiple positive inclined plates and reverse inclined plates. The baffle plate is in an upward vertical state to prevent the powder on the positive inclined plates or the reverse inclined plates from falling. The upper sides of the multiple layers of positive inclined plates and reverse inclined plates inside the powder supply bin are used to place powder. The temperature inside the powder supply bin rises under the action of the heater. Because the overall thickness of each layer of powder is relatively thin, compared with the traditional method of stacking all the powder, the powder in the device can be more affected by the temperature, so that the powder temperature is close to its melting point or sintering point, thereby accelerating the subsequent powder laser sintering efficiency.

[0019] 2. The car model processing equipment described in the present invention uses hot air transported in by a ventilation pipe, and the hot air rises through a plurality of ventilation slots to avoid the multi-layer plate structure affecting the rising of the gas. When the hot air passes through the ventilation slots, the ventilation block is heated, and the temperature of the ventilation block can insulate the powder in contact with it. By setting the ventilation slots, the hot air can heat the powder faster inside the powder supply bin, and the heated ventilation block will also insulate the powder in contact with it.

[0020] 3. The car model processing equipment described in the present invention emits laser inside the glass tube. The emitted laser penetrates the second lens to pre-sinter the powder on one side of the second lens. A micro camera is used to observe whether the sintered powder meets the sintering standards. If it does, the entire device can complete the laser sintering to process the car model. If it does not, it can be corrected by checking the powder and the internal temperature. By pre-sintering the powder before formal work, it can be checked whether the powder meets the sintering standards to avoid problems such as rough surface of the car model sintered subsequently due to powder problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is an overall stereogram of the present invention;

[0023] Figure 2 It is a three-dimensional schematic diagram of the laser assembly and the powder supply bin in the present invention;

[0024] Figure 3 This is a schematic diagram of the powder supply bin explosion in the present invention;

[0025] Figure 4 It is a three-dimensional schematic diagram of the inclined strip groove in the present invention;

[0026] Figure 5 It is a three-dimensional schematic diagram of the positive inclined plate in the present invention;

[0027] Figure 6 It is a three-dimensional schematic diagram of the baffle plate in the present invention;

[0028] Figure 7 It is a three-dimensional schematic diagram of the positively inclined plate and the reversely inclined plate in the present invention;

[0029] Figure 8 It is a three-dimensional schematic diagram of the explosion of the laser assembly in the present invention;

[0030] Fig. 9 It is a schematic diagram of the direction of laser in the present invention;

[0031] Fig.10 This is a schematic diagram of the laser beam direction in the present invention;

[0032] Fig.11 It is a three-dimensional schematic diagram of the prefabricated strip in the present invention.

[0033] In the figure: 1. laser 3D printing device; 11. visualization glass; 2. laser assembly; 21. laser box; 22. first lens; 23. laser generator; 24. first rotating motor; 25. first reflector; 26. second rotating motor; 27. second reflector; 28. glass tube; 29. ​​micro camera; 3. powder supply bin; 31. bin cavity; 32. upper cover plate; 33. ventilation pipe; 34. inclined strip groove; 4. lower bin; 5. molding chamber; 51. printing lifting platform; 52. powder laying roller; 6. prefabricated strip; 61. feed trough; 62. sliding plug; 63. electric telescopic column; 64. second lens; 7. heater; 8. positive tilting plate; 81. material placing plate; 82. fixed block; 83. inclined block; 84. material blocking plate; 841. rotating shaft; 842. fixed motor; 85. ventilation block; 851. ventilation groove; 9. reverse tilting plate. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Embodiment 1

[0036] like Figure 1-5As shown, a car model processing device according to an embodiment of the present invention comprises a laser 3D printing device 1, wherein the laser 3D printing device 1 comprises a body, wherein a powder supply bin 3, a laser assembly 2 and a molding chamber 5 are fixedly installed inside the body, a lower material bin 4 is fixedly installed directly below the powder supply bin 3, a powder spreading roller 52 is movably installed on the upper side of the molding chamber 5, a printing lifting platform 51 is lifted and installed inside the molding chamber 5, the lower material bin 4 is used to transport the dust inside the powder supply bin 3 to the powder spreading roller 52, a heater 7 is fixedly installed on the side of the lower material bin 4, and the heater 7 is located directly above the molding chamber 5;

[0037] A plurality of positively inclined plates 8 and reversely inclined plates 9 are fixedly installed inside the powder supply bin 3. A positively inclined plate 8 and a reversely inclined plate 9 form a group. The corresponding reversely inclined plate 9 is located directly below the positively inclined plate 8. The positively inclined plates 8 and the reversely inclined plates 9 are components made of the same structure and face opposite directions. A baffle plate 84 is rotatably provided on one side of the positively inclined plate 8, and a ventilation pipe 33 is fixedly installed on the lower side of the powder supply bin 3.

[0038] Specifically, the powder inside the powder supply bin 3 is distributed on the upper side surfaces of multiple positive inclined plates 8 and reverse inclined plates 9, and the baffle plate 84 is in an upward vertical state, which is used to prevent the powder on the positive inclined plates 8 or the reverse inclined plates 9 from falling. The space where the printing lifting platform 51 is located is heated by the heater 7, and the temperature in this space is preheated to a level close to the melting point or sintering point of the powder. Because of the connectivity of the ventilation pipe 33, the temperature inside the powder supply bin 3 will increase, and the temperature inside the powder supply bin 3 will also be close to the melting point or sintering point of the powder. By slightly rotating the baffle plate 84, the powder on the same group of positive inclined plates 8 falls onto the reverse inclined plates 9, and the powder on this group of reverse inclined plates 9 falls onto the positive inclined plates 8 of the next group, and so on, and finally the powder falls into the lower bin 4. The first group of lower bins 4 outputs the powder to the powder spreading roller 52 in the initial position directly below, and the powder spreading roller 52 slides to spread a layer of powder. The powder is spread on the upper side of the printing lifting platform 51, and the laser component 2 emits a laser downward to sinter this layer of powder. The printing lifting platform 51 descends, and the second group of lower hoppers 4 outputs the powder to the powder spreading roller 52 directly below it after the movement. The powder spreading roller 52 moves to the initial position and spreads a layer of powder on the upper side of the printing lifting platform 51 again. The laser component 2 is used to laser sinter again, and so on. Through multiple powder spreading and sintering, the manufacture of vehicle model parts or frames is completed. Finally, the unsintered powder and parts are separated to complete the vehicle model processing. The upper side of the multi-layer positive inclined plate 8 and the reverse inclined plate 9 arranged inside the powder supply bin 3 are used to place powder. Because the overall thickness of each layer of powder is thin, compared with the traditional method of stacking all the powder, the powder in the present device can be more affected by temperature, so that the powder temperature is close to its melting point or sintering point, thereby accelerating the subsequent powder laser sintering efficiency.

[0039] like Figure 3As shown, a chamber cavity 31 is opened inside the powder supply bin 3 , a plurality of positively inclined plates 8 and reversely inclined plates 9 are fixedly installed inside the chamber cavity 31 , and an upper cover plate 32 is movably installed on the upper side of the powder supply bin 3 .

[0040] Specifically, open the upper cover plate 32 and pour the powder from the opened position of the upper cover plate 32. The powder will first fall to the upper side surface of the uppermost positive inclined plate 8. This upper side surface is a position where no ventilation block 85 is set. Because the baffle plate 84 is in an upward vertical state, the baffle plate 84 prevents the powder from falling. When the powder continues to be poured, the thickness of the powder on the upper side surface of the positive inclined plate 8 increases. When the powder thickness is greater than the height of the baffle plate 84 in the upward vertical state, because the positive inclined plate 8 is inclined, the continuously poured powder will fall to the upper side surface of the reverse inclined plate 9. The reverse inclined plate 9 and the positive inclined plate 8 are components made of the same structure, but the two are in opposite directions. Therefore, after a part of the powder is on the upper side surface of the reverse inclined plate 9, it falls again to the upper side surfaces of the next group of positive inclined plates 8 and reverse inclined plates 9, completing the feeding of the powder. In this way, the powder needed can be quickly layered to ensure that the layered powder can be more exposed to the effect of temperature, so that the powder temperature is close to the melting point or sintering point of the powder itself.

[0041] like Figure 2-4 As shown, the ventilation pipe 33 is used to transmit the air heated by the heater 7 into the interior of the chamber 31. The lower side of the powder supply chamber 3 is also provided with an inclined groove 34. The lower side of the powder supply chamber 3 is fixedly installed with a prefabricated strip 6. The inclined groove 34 is used to connect the chamber 31 and the prefabricated strip 6.

[0042] Specifically, the ventilation pipe 33 is arranged at the lower position of the powder supply bin 3 and at the upper end position of the heater 7. When the heater 7 is working to achieve heating, the hot air inside the space where the heater 7 is located rises, and then the hot air enters the bottom of the powder supply bin 3. In the process of the hot air moving from bottom to top, the powder inside the powder supply bin 3 is acted on. The position of the ventilation pipe 33 is reasonably planned so that the powder inside the powder supply bin 3 can be affected by the temperature more quickly.

[0043] like Figure 5 As shown, the positive inclined plate 8 includes a loading plate 81 and two fixed blocks 82 fixed inside the chamber 31, a plurality of ventilation blocks 85 are fixedly installed on the upper side of the loading plate 81, and the ventilation blocks 85 are arranged in a fine rhombus shape. A slope block 83 is arranged on the side of the fixed block 82 facing the loading plate 81, and the slope block 83 is fixedly connected to the loading plate 81.

[0044] like Figure 5 As shown, a ventilation slot 851 is formed inside the ventilation block 85 , and the ventilation slot 851 penetrates the material placement plate 81 .

[0045] Specifically, the height of the ventilation block 85 is greater than the height of the baffle plate 84. The setting of the placing plate 81 and the inclined block 83 prevents the powder on the upper side of the placing plate 81 from falling from the gap between the positive inclined plate 8 and the chamber 31. When there is powder on the upper sides of multiple positive inclined plates 8 and reverse inclined plates 9, hot air will be transported in by the ventilation pipe 33, and the hot air will rise through multiple ventilation grooves 851 to avoid the multi-layer plate structure affecting the rising of the gas. When the hot air passes through the ventilation grooves 851, the ventilation block 85 is heated, and the temperature of the ventilation block 85 can keep the powder in contact with it warm. By setting the ventilation grooves 851, the hot air can heat the powder faster inside the powder supply bin 3, and the heated ventilation block 85 will also keep the powder in contact with it warm.

[0046] like Figure 6 As shown, a rotating shaft 841 is fixedly installed on the lower side of the baffle plate 84, and the rotating shaft 841 is rotatably installed on the lower side of one end of the material placing plate 81. One end of the rotating shaft 841 is connected to a fixed motor 842 through an axis, and the fixed motor 842 is fixedly installed inside the corresponding fixed block 82.

[0047] Specifically, the fixed motor 842 is electrically driven to drive the rotating shaft 841 and the baffle plate 84 to rotate. When the baffle plate 84 rotates from the upward vertical state to the inner wall of the chamber 31 approaching, the highest horizontal position of the baffle plate 84 changes, and the powder on the positive inclined plate 8 will fall from the upper side of the positive inclined plate 8 until the powder on the positive inclined plate 8 is blocked by the baffle plate 84 again. At this time, the powder that falls down is at the uppermost layer of the positive inclined plate 8 and is also the powder that has been affected by heating. Therefore, the temperature of these powders is closest to their own melting point or sintering point, which can speed up the subsequent sintering efficiency. After the baffle plate 84 rotates 180 degrees, the baffle plate 84 is in a vertical state facing downward. Because the positive inclined plate 8 is inclined, the powder on the positive inclined plate 8 can be quickly dumped down, and the fine diamond setting of the ventilation block 85 and the setting of the inclined surface block 83 will not allow the powder to be retained on the upper side of the positive inclined plate 8. The same is true for the reverse inclined plate 9, so that the remaining powder will not exist in the powder supply bin 3, thereby causing waste.

[0048] like Figure 8-9 As shown, the laser assembly 2 includes a laser box 21 fixedly installed inside the laser 3D printing device 1, a first lens 22 is fixedly installed on the inner bottom of the laser box 21, a laser generator 23 is fixedly installed on the side of the laser box 21, a first rotating motor 24 is fixedly installed on the inner top of the laser box 21, the lower end of the first rotating motor 24 is fixedly connected to the first reflector 25 through an output shaft, a second rotating motor 26 is fixedly installed on the inner side wall of the laser box 21, and one end of the second rotating motor 26 is fixedly connected to the second reflector 27 through an output shaft.

[0049] Specifically, the laser emitted by the laser generator 23 is shot onto the tilted first reflector 25, the first reflector 25 reflects the laser onto the tilted second reflector 27, the second reflector 27 reflects the laser and allows the laser to be shot downward. During the downward emission, it passes through the first lens 22. The emitted laser sintered the powder on the upper end of the printing lifting platform 51. The first rotating motor 24 and the second rotating motor 26 drive the first reflector 25 and the second reflector 27 to rotate, changing the direction of the laser after reflection. The downward laser continuously changes its emission direction to complete the sintering work.

[0050] Embodiment 2

[0051] like Figure 8 As shown, compared with Example 1, another embodiment of the present invention is: a glass tube 28 is fixedly installed on the side of the laser box 21 facing the prefabricated strip 6, the glass tube 28 is used to connect the laser box 21 and the prefabricated strip 6, and a miniature camera 29 is fixedly installed on the inner wall of the glass tube 28. The first reflector 25 and the second reflector 27 rotate to change the angle at which the laser generator 23 emits the laser.

[0052] Specifically, the second rotating motor 26 drives and controls the second reflector 27 to rotate to a horizontal state. At this time, the laser emitted by the laser generator 23 is only reflected on the first reflector 25. The laser will pass through the laser box 21 and the glass tube 28 toward the position of the prefabricated strip 6. The micro camera 29 is used to observe the laser emitted from the glass tube 28.

[0053] like Figure 10-11 As shown, a feed trough 61 is opened inside the prefabricated strip 6, an electric telescopic column 63 is fixedly installed inside the feed trough 61, a sliding plug 62 is fixedly installed at one end of the electric telescopic column 63, the sliding plug 62 is slidably installed inside the feed trough 61, and a second lens 64 is fixedly installed on the side of the prefabricated strip 6 facing the laser box 21, and the second lens 64 is fixedly connected to the glass tube 28.

[0054] Specifically, after the powder is poured into the chamber 31, there is powder on the upper side of the plurality of positively inclined plates 8, and the powder will enter the feed trough 61 through the inclined inclined strip grooves 34. A large amount of powder is accumulated in the feed trough 61 and passes through the second lens 64. When the electric telescopic column 63 contracts and drives the sliding plug 62 to slide, more powder can enter the feed trough 61, and the powder on the side of the second lens 64 will move down and be replaced by other powder. When the device is not laser sintering, the laser is emitted from the inside of the glass tube 28, and the emitted laser penetrates the second lens 64 to pre-sinter the powder on the side of the second lens 64. The camera 29 is used to observe whether the sintered powder meets the sintering standards. If so, the entire device can complete the laser sintering for car model processing. If not, it can be corrected by checking the powder and internal temperature. When prefabrication is required again, the electric telescopic column 63 is contracted to drive the sliding plug 62 to move the sintered powder and the surrounding powder. At this time, the powder on the side of the second lens 64 is new and can be prefabricated and sintered again. By prefabricating and sintering the powder before formal work, it can be checked whether the powder meets the sintering standards to avoid problems such as rough surface of the car model sintered later due to powder problems.

[0055] Working principle: the powder inside the powder supply bin 3 is distributed on the upper side of multiple positive inclined plates 8 and reverse inclined plates 9, and the baffle plate 84 is in an upward vertical state to prevent the powder on the positive inclined plates 8 or reverse inclined plates 9 from falling. The space where the printing lift 51 is located is heated by the heater 7, and the temperature in this space is preheated to a level close to the melting point or sintering point of the powder. Because of the connection of the ventilation pipe 33, the temperature inside the powder supply bin 3 will rise, and the temperature inside the powder supply bin 3 will also be close to the melting point or sintering point of the powder. By slightly rotating the baffle plate 84, the powder on the same group of positively inclined plates 8 falls onto the reversely inclined plates 9, and the powder on this group of reversely inclined plates 9 falls onto the positively inclined plates 8 of the next group, and so on, and finally the powder falls into the lower bin 4, and the first group of lower bins 4 outputs the powder to the powder spreading roller 52 in the initial position directly below, and the powder spreading roller 52 slides to spread a layer of powder on the upper side of the printing lift 51, and the laser assembly 2 emits a laser downward to sinter this layer of powder, and the printing lift 51 descends, and the second group of lower bins 4 outputs the powder to After the movement, the powder spreading roller 52 located directly below moves to the initial position, and spreads a layer of powder on the side of the printing lifting platform 51 again, and laser sintering is performed again through the laser component 2. By analogy, the manufacturing of the vehicle model parts or frames is completed through multiple powder spreading and sintering. Finally, the unsintered powder and the parts are separated, and the vehicle model processing work is completed. After pouring the powder inside the chamber 31, there is powder on the side of multiple positive inclined plates 8, and the powder will enter the feed trough 61 through the inclined inclined strip groove 34. A large amount of powder The powder is not accumulated inside the feed trough 61 and has passed through the second lens 64. When the electric telescopic column 63 contracts and drives the sliding plug 62 to slide, more powder can enter the feed trough 61, and the powder on the side of the second lens 64 will move down and be replaced by other powder. When the device is not performing laser sintering, the laser is emitted from the inside of the glass tube 28, and the emitted laser penetrates the second lens 64 to pre-sinter the powder on the side of the second lens 64. The micro camera 29 is used to observe whether the sintered powder meets the sintering standards.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining 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 fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A car model processing device, comprising a laser 3D printing device (1), wherein the laser 3D printing device (1) comprises a body, wherein a powder supply bin (3), a laser assembly (2) and a molding chamber (5) are fixedly installed inside the body, and wherein: A material lowering bin (4) is fixedly installed directly below the powder supply bin (3); a powder spreading roller (52) is movably installed on the upper side of the molding chamber (5); a printing lifting platform (51) is lifted and installed inside the molding chamber (5); the material lowering bin (4) is used to transport the dust inside the powder supply bin (3) to the powder spreading roller (52); a heater (7) is fixedly installed on the side of the material lowering bin (4), and the heater (7) is located directly above the molding chamber (5); A plurality of positively inclined plates (8) and reversely inclined plates (9) are fixedly installed inside the powder supply bin (3), one positively inclined plate (8) and reversely inclined plate (9) forming a group, the corresponding reversely inclined plate (9) being located directly below the positively inclined plate (8), the positively inclined plate (8) and reversely inclined plate (9) being components made of the same structure, facing opposite directions, a material blocking plate (84) being rotatably provided on one side of the positively inclined plate (8), a ventilation pipe (33) being fixedly installed on the lower side of the powder supply bin (3), the ventilation pipe (33) being used to transmit air heated by the heater (7) into the bin cavity (31); The powder supply bin (3) has a bin cavity (31) formed inside, a plurality of positively inclined plates (8) and reversely inclined plates (9) are fixedly mounted inside the bin cavity (31), and an upper cover plate (32) is movably mounted on the upper side of the powder supply bin (3); The positively inclined plate (8) comprises a material placing plate (81) fixed inside the chamber (31) and two fixed blocks (82); a plurality of ventilation blocks (85) are fixedly mounted on the upper side of the material placing plate (81); the ventilation blocks (85) are arranged in a thin rhombus shape; a slope block (83) is arranged on a side of the fixed block (82) facing the material placing plate (81); the slope block (83) is fixedly connected to the material placing plate (81); A ventilation slot (851) is provided inside the ventilation block (85), and the ventilation slot (851) passes through the material placement plate (81); The laser assembly (2) comprises a laser box (21) fixedly mounted inside the laser 3D printing device (1); a first lens (22) is fixedly mounted on the inner bottom of the laser box (21); a laser generator (23) is fixedly mounted on the side of the laser box (21); a first rotating motor (24) is fixedly mounted on the inner top of the laser box (21); a first reflecting mirror (25) is fixedly connected to the lower end of the first rotating motor (24) via an output shaft; a second rotating motor (26) is fixedly mounted on the inner side wall of the laser box (21); and one end of the second rotating motor (26) is fixedly connected to the second reflecting mirror (27) via an output shaft; A prefabricated strip (6) is fixedly mounted on the lower side of the powder supply bin (3); a glass cylinder (28) is fixedly mounted on the side of the laser box (21) facing the prefabricated strip (6); the glass cylinder (28) is used to connect the laser box (21) and the prefabricated strip (6); and a micro camera (29) is fixedly mounted on the inner side wall of the glass cylinder (28); The first reflector (25) and the second reflector (27) rotate to change the angle at which the laser is emitted by the laser generator (23); A material feeding trough (61) is provided inside the prefabricated strip (6), an electric telescopic column (63) is fixedly installed inside the material feeding trough (61), a sliding plug (62) is fixedly installed at one end of the electric telescopic column (63), and the sliding plug (62) is slidably installed inside the material feeding trough (61), and a second lens (64) is fixedly installed on a side of the prefabricated strip (6) facing the laser box (21), and the second lens (64) is fixedly connected to the glass cylinder (28). The lower side of the powder supply bin (3) is also provided with an inclined strip groove (34), and the inclined strip groove (34) is used to connect the bin cavity (31) and the prefabricated strip (6).

2. The vehicle model processing equipment according to claim 1, characterized in that: A rotating shaft (841) is fixedly mounted on the lower side of the material blocking plate (84), the rotating shaft (841) is rotatably mounted on the lower side of one end of the material placing plate (81), one end of the rotating shaft (841) is connected to a fixed motor (842) via a shaft, the fixed motor (842) is fixedly mounted inside the corresponding fixed block (82).

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