Rough grinding device for resin sand casting products

Abstract

The invention discloses a rough grinding device for a resin sand casting product, and relates to the technical field of grinding devices. The machining device comprises a machining table, a positioning device used for fixing the tubular resin sand hardware fittings is arranged on the front side of the top of the machining table, an adapting device is arranged on the rear side of the top of the machining table and comprises an elastic telescopic plate, and the fixed end of the elastic telescopic plate is fixed to the top of the machining table; and a rotating roller I is rotationally mounted at the top of the fixed end of the elastic telescopic plate. Through the arrangement of the adapting device, the threaded rod, the push plate, the machining table and the first elastic telescopic rod are matched to drive the abutting roller to abut against the abrasive belt and abut against the tubular resin sand hardware fitting, and therefore the abrasive belt is tightly attached to the outer wall of the tubular resin sand hardware fitting; the first elastic telescopic rod enables the abutting roller to drive the abrasive belt to conduct self-adaptive adjustment according to different diameters of the tubular resin sand hardware fittings, and therefore it is guaranteed that the abrasive belt can be tightly attached to the outer wall of the pipe fitting all the time.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a rough grinding device for resin sand castings. Background Art

[0002] The rough grinding device for resin sand castings is a device specifically designed for surface treatment of castings, primarily used to remove burrs, loose sand, and surface irregularities generated during the casting process. It typically uses rotating grinding discs, grinding wheels, and other tools, combined with appropriate grinding force, to quickly smooth the casting surface and improve subsequent processing quality. This device is suitable for castings of various shapes and materials, effectively improving production efficiency and the appearance quality of the castings.

[0003] A Chinese patent with the patent publication number CN221621742U discloses a rough grinding device for resin sand castings, comprising a dust cover, wherein the inner top wall of the dust cover is fixedly connected to a mainboard, a motor is fixedly connected to one side of the top of the mainboard, the output end of the motor is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the top of the mainboard, the outer wall of the rotating shaft is fixedly connected to a rectangular array of bevel gear 1, the top of the mainboard is rotatably connected to a rectangular array of bevel gear 2, the bevel gear 2 meshes with the bevel gear 1, the bottom of the mainboard is fixedly connected to a plurality of annular array slide rails, and the bottom of the bevel gear 2 is fixedly connected to a rotating plate. In this patent, the rotation of the rotating plate pulls a transmission rod, which in turn pulls a slider to slide, thereby causing the clamp to clamp the resin sand casting, solving the problem of being unable to grind multiple resin sand castings simultaneously and improving the production rate of resin sand castings.

[0004] However, the current rough grinding device has the following problems: although the rough grinding device can grind multiple resin sand castings, when it comes to tubular resin sand hardware accessories, the rough grinding device is not convenient for adapting to grinding tubular resin sand hardware accessories of different sizes. Therefore, we propose a rough grinding device for resin sand castings. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a rough grinding device for resin sand castings, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rough grinding device for resin sand castings, comprising a processing table, a top front side of the processing table is provided with a positioning device for fixing tubular resin sand hardware accessories, the positioning device comprises a placing plate, the placing plate is fixed to the top of the processing table, the top of the placing plate is evenly and equidistantly rotatably installed with a placing disc, the placing disc is driven by a servo motor, and the servo motor is fixed to the bottom of the processing table, a slide groove is provided on the top of the placing disc, a bidirectional screw is rotatably installed inside the slide groove of the placing disc, both sides of the outer wall of the bidirectional screw are threadedly connected with a splint, and the splint is slidably installed inside the slide groove of the placing disc, an adaptable device is provided on the top rear side of the processing table, the adaptable device comprises an elastic telescopic plate, the fixed end of the elastic telescopic plate is fixed to the top of the processing table, a roller 1 is rotatably installed on the top of the fixed end of the elastic telescopic plate, and the roller 1 is driven by a motor, the elastic telescopic plate The top of the telescopic end of the push plate is rotatably mounted on the second roller, and the sanding belt is transmitted between the roller one and the outer wall of the roller two. The top of the telescopic end of the push plate is rotatably mounted on the second roller, and the sanding belt is transmitted to the outer wall of the roller two. The top of the telescopic end of the push plate is rotatably mounted on the second roller, and the sanding belt is transmitted to the outer wall of the roller two. The sanding belt is transmitted to the outer wall of the roller two. The elastic telescopic rod enables the contact roller to drive the sanding belt to adapt to the different diameters of the tubular resin sand hardware accessories.

[0007] According to the above technical solution, a wetting device is provided on the front side of the sanding belt, and the wetting device includes a U-shaped frame, the U-shaped frame is fixed on the top of the processing table, a water tank is fixed on one side of the top of the U-shaped frame, a pump is fixed on the top of the water tank, a straight pipe is fixed on the water outlet end of the pump, and three elastic telescopic rods 2 are fixed evenly and equidistantly on the top of the U-shaped frame, and the front bottom of the telescopic end of the three elastic telescopic rods 2 are rotatably installed with a through-hole roller, and the top of the through-hole roller is rotatably installed with a water injection tray, and the injection tray The water tray and the straight pipe are connected by a hose. After the tubular resin sand hardware accessories are placed on the top of the three placement trays respectively, under the elastic force of the elastic telescopic rod 2, the elastic telescopic rod 2 will always push the through-hole roller to resist the outer wall of the tubular resin sand hardware accessories. When the grinding operation begins, the staff starts the pump, and the pump draws water from the water tank and transmits it to the water filling tray through the straight pipe and the hose. The water filling tray injects water into the through-hole roller, and the through holes of the through-hole roller spray water on the surface of the sanding belt and the tubular resin sand hardware accessories.

[0008] According to the technical scheme, the semi-arc plate is fixed to the front bottom of the telescopic end of the second elastic telescopic rod, is located at the rear side of the through-hole roller, is concentrically arranged with the through-hole roller, and is provided with a through hole on the side close to the abrasive belt. The through hole of the semi-arc plate avoids the problem that the water sprayed by the through-hole roller is blocked by the semi-arc plate.

[0009] According to the technical scheme, the outer wall of the through-hole roller is fixed with a resistance ring, the inner wall of the semi-arc plate is provided with a rough surface, and the outer wall of the resistance ring is in contact with the inner wall of the semi-arc plate. The outer wall of the through-hole roller is provided with a smooth surface. Since the surface of the unpolished tubular resin sand hardware fitting is rough, the tubular resin sand hardware fitting drives the through-hole roller to rotate when rotating, so that the through-hole roller rotates to spray water, and the resistance ring also rotates when the through-hole roller rotates. At this time, the rotation force of the through-hole roller driving the resistance ring is greater than the frictional resistance between the resistance ring and the semi-arc plate. When the surface of the tubular resin sand hardware fitting is polished to be smooth, the friction between the tubular resin sand hardware fitting and the through-hole roller becomes small. At this time, the rotation force of the resistance ring is less than the frictional resistance between the resistance ring and the semi-arc plate. The semi-arc plate limits the rotation of the through-hole roller through the resistance ring.

[0010] According to the technical scheme, the U-shaped frame is provided with an adsorption device below, the adsorption device includes a rotating rod and a squeezing cylinder, the rotating rod is rotatably installed on the inner wall top of the U-shaped frame, the outer part of the rotating rod is fixed with a sponge roller, the bottom of the rotating rod is fixed with a friction wheel, the squeezing cylinder is fixed on the inner wall top of the U-shaped frame, the outer wall of the squeezing cylinder is in contact with the outer wall of the sponge roller, and the side close to the sponge roller of the squeezing cylinder is provided with a water inlet hole, the outer wall of the friction wheel is provided with a rough surface, the outer wall of the first rotating roller is provided with a rough surface, and the outer wall of the friction wheel is in contact with the outer wall of the first rotating roller. When the abrasive belt with water is rotated to the position of the sponge roller, the sponge roller can adsorb the water on the surface of the abrasive belt. When the first rotating roller rotates, the first rotating roller drives the friction wheel to rotate under the friction between the first rotating roller and the friction wheel. The water adsorbed by the sponge roller is sucked into the squeezing cylinder through the water inlet hole of the squeezing cylinder. The squeezing cylinder discharges, so that the sponge roller can continuously adsorb the water on the surface of the abrasive belt.

[0011] The present application provides a rough polishing device for resin sand castings. It has the following advantages: (1) The present invention adopts the setting of the adaptive device, so that the threaded rod, the push plate, the processing table, and the elastic telescopic rod cooperate to drive the friction roller to push the sand belt toward the tubular resin sand hardware accessories, so that the sand belt is closely attached to the outer wall of the tubular resin sand hardware accessories. The elastic telescopic rod enables the friction roller to drive the sand belt to make adaptive adjustments according to the different diameters of the tubular resin sand hardware accessories, thereby ensuring that the sand belt can always be closely attached to the outer wall of the pipe fitting, which helps to improve the flexibility and adaptability of the grinding process and is suitable for pipe fittings of various sizes. In addition, the elastic telescopic rod provides a uniform pressure distribution, so that the friction roller can evenly push the sand belt toward the outer wall of the pipe fitting. This uniform pressure can ensure that the friction between the sand belt and the surface of the pipe fitting is balanced, thereby achieving a smoother and more consistent grinding effect and avoiding local over-grinding or uneven surface during the grinding process.

[0012] (2) The present invention sets a wetting device, so that the placement plate, the elastic telescopic rod 2, the through-hole roller, the pump, the water tank, the straight pipe, and the water injection plate cooperate to drive the through-hole roller to spray water on the surface of the sand belt and the tubular resin sand hardware accessories. The water can effectively take away the heat generated by friction, prevent surface damage or material changes caused by overheating, and maintain the stability of the tubular resin sand hardware accessories and the sand belt. In addition, the water helps reduce the friction between the sand belt and the surface of the pipe, which can effectively slow down the wear and make the contact between the sand belt and the surface of the pipe more uniform. At the same time, the semi-arc plate forms a shield at the through-hole roller, thereby The problem of water sprayed from the through-hole roller splashing everywhere is avoided. The opening setting of the semi-arc plate avoids the problem of water sprayed from the through-hole roller being blocked by the semi-arc plate, thereby ensuring that the through-hole roller effectively sprinkles water onto the sanding belt; when the surface of the tubular resin sand hardware accessories is polished smooth, the friction between the tubular resin sand hardware accessories and the through-hole roller becomes smaller. At this time, the rotational force of the resistance ring is less than the friction resistance between the resistance ring and the semi-arc plate. The semi-arc plate limits the rotation of the through-hole roller through the resistance ring, so that the staff can judge the polishing condition of the tubular resin sand hardware accessories by observing the rotation of the through-hole roller.

[0013] (3) The present invention sets an adsorption device so that the sponge roller can adsorb the moisture on the surface of the sand belt. At the same time, the rotating roller, the friction wheel and the sponge roller cooperate so that the water inlet hole of the extrusion cylinder can squeeze the water adsorbed by the sponge roller into the extrusion cylinder, and the extrusion cylinder will discharge it, so that the sponge roller can continuously adsorb the moisture on the surface of the sand belt. The sponge roller can continuously adsorb the moisture on the surface of the sand belt, avoiding the sand belt surface from being over-wet due to excessive moisture, and also avoiding too little moisture affecting the grinding effect. Maintaining moderate moisture helps to optimize the working state of the sand belt, thereby achieving a uniform grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the present invention as a whole Figure One ; Figure 2 schematic diagram of the whole application Figure Two ; Figure 3 schematic diagram of the adapting device of the application Figure One ; Figure 4 schematic diagram of the adapting device of the application Figure Two ; Figure 5 schematic diagram of the adapting device of the application Figure Three ; Figure 6 schematic diagram of the positioning device of the application Figure One ; Figure 7 schematic diagram of the positioning device of the application Figure Two ; Figure 8 schematic diagram of the wetting device of the application Figure One ; Figure 9 schematic diagram of the wetting device of the application Figure Two ; Figure 10 schematic diagram of the wetting device of the application

[0015] Figure: 1, processing table; 2, positioning device; 21, placing plate; 22, placing disc; 23, servo motor; 24, bidirectional screw; 25, clamping plate; 3, adapting device; 31, elastic expansion plate; 32, rotating roller one; 33, rotating roller two; 34, abrasive belt; 35, abutting roller; 36, elastic expansion rod one; 37, push plate; 38, threaded rod; 4, wetting device; 41, U-shaped frame; 42, elastic expansion rod two; 43, through-hole roller; 44, water injection disc; 45, straight pipe; 46, pump; 47, water tank; 48, semi-arc plate; 49, resistance ring; 5, adsorbing device; 51, rotating rod; 52, friction wheel; 53, sponge roller; 54, extrusion cylinder. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0017] Please refer to Figures 1-10One embodiment of the present invention is: a rough grinding device for resin sand castings, including a processing table 1, a positioning device 2 for fixing tubular resin sand hardware accessories is provided on the top front side of the processing table 1, the positioning device 2 includes a placement plate 21, the placement plate 21 is fixed to the top of the processing table 1, and a placement disc 22 is evenly and equidistantly installed on the top of the placement plate 21. The placement disc 22 is driven by a servo motor 23, and the servo motor 23 is fixed to the bottom of the processing table 1. A slide groove is provided on the top of the placement disc 22, and a bidirectional screw 24 is rotatably installed inside the slide groove of the placement disc 22. The bidirectional screw 24 rotates The outer wall is threadedly connected with a clamping plate 25 on both sides, and the clamping plate 25 is slidably installed in the slide groove of the placement plate 22. The top rear side of the processing table 1 is provided with an adaptation device 3, which includes an elastic expansion plate 31. The fixed end of the elastic expansion plate 31 is fixed to the top of the processing table 1. The top of the fixed end of the elastic expansion plate 31 is rotatably installed with a roller 1 32, and the roller 1 32 is driven by a motor. The top of the expansion end of the elastic expansion plate 31 is rotatably installed with a roller 2 33. An abrasive belt 34 is connected to the outer wall of the roller 1 32 and the roller 2 33. A through groove is provided on the top rear side of the processing table 1. A threaded rod 38 is rotatably installed inside the through slot of the table 1, and the external thread of the threaded rod 38 is connected to a push plate 37, and the push plate 37 is slidably installed inside the through slot of the processing table 1. A plurality of elastic telescopic rods 36 are fixed to the front side of the push plate 37, and a plurality of elastic telescopic rods 36 are fixed to the front top of each of the plurality of elastic telescopic rods 36. The conflict roller 35 contacts the front inner wall of the sand belt 34. Two of the plurality of conflict rollers 35 form a group, and a distance of ten centimeters is left between the two conflict rollers 35 of each group. Through the arrangement of the above structure, the elastic telescopic rod 36 and the conflict roller 35 can drive the sand belt 34 Adaptive adjustment is made according to the different diameters of tubular resin sand hardware accessories to ensure that the sanding belt 34 can always fit closely to the outer wall of the pipe, which helps to improve the flexibility and adaptability of the sanding process and is suitable for pipes of various sizes. In addition, the elastic telescopic rod 36 provides uniform pressure distribution, so that the resistance roller 35 can evenly push the sanding belt 34 to the outer wall of the pipe. This uniform pressure can ensure that the friction between the sanding belt 34 and the surface of the pipe is balanced, thereby achieving a smoother and more consistent sanding effect and avoiding local over-polishing or uneven surface during the sanding process.

[0018] A wetting device 4 is provided on the front side of the abrasive belt 34. The wetting device 4 includes a U-shaped frame 41. The U-shaped frame 41 is fixed to the top of the processing table 1. A water tank 47 is fixed to one side of the top of the U-shaped frame 41. A pump 46 is fixed to the top of the water tank 47. A straight pipe 45 is fixed to the water outlet of the pump 46. Three elastic telescopic rods 42 are evenly and equidistantly fixed to the top of the U-shaped frame 41. A through-hole roller 43 is rotatably installed on the bottom front side of the telescopic end of the three elastic telescopic rods 42. A water injection tray is rotatably installed on the top of the through-hole roller 43. 44, and the water injection tray 44 is connected to the straight pipe 45 through a hose. Through the arrangement of the above structure, the through holes of the through-hole roller 43 spray water on the surface of the sanding belt 34 and the tubular resin sand hardware accessories. The water can effectively take away the heat generated by friction, prevent surface damage or material changes caused by overheating, maintain the stability of the tubular resin sand hardware accessories and the sanding belt 34, and the water helps reduce the friction between the sanding belt 34 and the surface of the pipe, which can effectively slow down the wear and make the contact between the sanding belt 34 and the surface of the pipe more uniform.

[0019] A semi-arc plate 48 is fixed to the bottom of the front side of the telescopic end of the elastic telescopic rod 2 42, and the semi-arc plate 48 is located on the rear side of the through-hole roller 43. The semi-arc plate 48 and the through-hole roller 43 are concentrically arranged, and a through-opening is opened on the side of the semi-arc plate 48 close to the sanding belt 34. Through the arrangement of the above structure, the semi-arc plate 48 will form a shield at the through-hole roller 43, thereby avoiding the problem of water sprayed from the through-hole roller 43 splashing everywhere. The through-opening arrangement of the semi-arc plate 48 avoids the problem of water sprayed from the through-hole roller 43 being blocked by the semi-arc plate 48, thereby ensuring that the through-hole roller 43 effectively sprinkles water onto the sanding belt 34.

[0020] A resistance ring 49 is fixed on the upper outer wall of the through-hole roller 43, and the inner wall of the semi-arc plate 48 is set as a rough surface. The outer wall of the resistance ring 49 contacts the inner wall of the semi-arc plate 48, and the outer wall of the through-hole roller 43 is set as a smooth surface. Through the setting of the above structure, when the surface of the tubular resin sand hardware accessories is polished smooth, the friction between the tubular resin sand hardware accessories and the through-hole roller 43 becomes smaller. At this time, the rotational force of the resistance ring 49 is less than the friction resistance between the resistance ring 49 and the semi-arc plate 48. The semi-arc plate 48 limits the rotation of the through-hole roller 43 through the resistance ring 49, so that the staff can judge the polishing condition of the tubular resin sand hardware accessories by observing the rotation of the through-hole roller 43.

[0021] During use, the tubular resin sand hardware accessories that need to be polished are placed on the top of the three placement trays 22 respectively, and the staff manually rotates the bidirectional screw 24, and the bidirectional screw 24 drives the splint 25 to move away from the center of the placement tray 22, and the splint 25 is against the inner wall of the tubular resin sand hardware accessories, thereby fixing the tubular resin sand hardware accessories on the top of the placement tray 22. Then, the staff manually rotates the threaded rod 38, and the threaded rod 38 drives the push plate 37 to move forward along the inside of the through groove of the processing table 1, and the push plate 37 pushes the elastic telescopic rod 36 to drive the resistance roller 35 to press against the sanding belt 34 toward the tubular resin sand hardware accessories until the sanding belt 34 is close to the outer wall of the tubular resin sand hardware accessories. The elastic telescopic rod 36 enables the resistance roller 35 to drive the sanding belt 34 It is adaptively adjusted according to the different diameters of the tubular resin sand hardware accessories to ensure that the sanding belt 34 can always fit closely to the outer wall of the pipe, which helps to improve the flexibility and adaptability of the grinding process and is suitable for pipes of various sizes. The elastic telescopic rod 36 provides a uniform pressure distribution, so that the resistance roller 35 can evenly push the sanding belt 34 to the outer wall of the pipe. This uniform pressure can ensure that the friction between the sanding belt 34 and the surface of the pipe is balanced, thereby achieving a smoother and more consistent grinding effect and avoiding local over-grinding or uneven surface during the grinding process. Finally, the servo motor 23 is started, and the servo motor 23 drives the tubular resin sand hardware accessories to rotate through the placement plate 22. At this time, the grinding operation of the tubular resin sand hardware accessories can be carried out.

[0022] It should be noted that, when the resisting roller 35 is pressed against the sand belt 34 and moved toward the tubular resin sand hardware accessory, the sand belt 34 will bring the second roller 33 to squeeze the telescopic end of the elastic telescopic plate 31 .

[0023] After the tubular resin sand hardware accessories are placed on the top of the three placement trays 22, under the elastic force of the elastic telescopic rod 2 42, the elastic telescopic rod 2 42 will always push the through-hole roller 43 to resist the outer wall of the tubular resin sand hardware accessories. When the grinding operation begins, the staff starts the pump 46, and the pump 46 extracts water from the water tank 47 and transmits it to the water injection tray 44 through the straight pipe 45 and the hose. The water injection tray 44 injects water into the through-hole roller 43, and the through holes of the through-hole roller 43 spray the water on the sanding belt. 34 and the surface of the tubular resin sand hardware accessories, water can effectively take away the heat generated by friction, prevent surface damage or material changes caused by overheating, maintain the stability of the tubular resin sand hardware accessories and the sanding belt 34, and water helps reduce the friction between the sanding belt 34 and the surface of the pipe, which can effectively slow down the wear and make the contact between the sanding belt 34 and the surface of the pipe more uniform; at the same time, the semi-arc plate 48 will form a shield at the through-hole roller 43, thereby avoiding the problem of water sprayed from the through-hole roller 43 splashing everywhere, and ... The opening of the plate 48 avoids the problem that the water sprayed by the through-hole roller 43 is blocked by the semi-arc plate 48, thereby ensuring that the through-hole roller 43 effectively sprinkles water onto the sanding belt 34; since the surface of the unpolished tubular resin sand hardware accessories is relatively rough, when the tubular resin sand hardware accessories rotate, the through-hole roller 43 will be driven to rotate, so that the through-hole roller 43 can rotate and sprinkle water, and when the through-hole roller 43 rotates, the resistance ring 49 will also be driven to rotate. At this time, the rotational force of the resistance ring 49 driven by the through-hole roller 43 is greater than the friction resistance between the resistance ring 49 and the semi-arc plate 48. When the surface of the tubular resin sand hardware accessories is polished smooth, the friction between the tubular resin sand hardware accessories and the through-hole roller 43 becomes smaller. At this time, the rotational force of the resistance ring 49 is less than the friction resistance between the resistance ring 49 and the semi-arc plate 48. The semi-arc plate 48 limits the rotation of the through-hole roller 43 through the resistance ring 49, so that the staff can judge the polishing condition of the tubular resin sand hardware accessories by observing the rotation of the through-hole roller 43.

[0024] See also Figures 1-10On the basis of the above embodiment, in another embodiment of the present invention, an adsorption device 5 is provided below the U-shaped frame 41, and the adsorption device 5 includes a rotating rod 51 and an extrusion cylinder 54. The rotating rod 51 is rotatably mounted on the top of the inner wall of the U-shaped frame 41, a sponge roller 53 is fixed to the outside of the rotating rod 51, a friction wheel 52 is fixed to the bottom of the rotating rod 51, and an extrusion cylinder 54 is fixed to the top of the inner wall of the U-shaped frame 41. The extrusion cylinder 54 contacts the outer wall of the sponge roller 53, and a water inlet hole is provided on the side of the extrusion cylinder 54 close to the sponge roller 53. The outer wall of the friction wheel 52 is a rough surface, and the outer wall of the roller 32 is a rough surface. The outer wall of the friction wheel 52 is in contact with the outer wall of the rotating roller 32. Through the arrangement of the above structure, the water inlet hole of the extrusion cylinder 54 will squeeze the water adsorbed by the sponge roller 53 into the extrusion cylinder 54, and the extrusion cylinder 54 will discharge it, so that the sponge roller 53 can continuously adsorb the moisture on the surface of the sand belt 34. The sponge roller 53 can continuously adsorb the moisture on the surface of the sand belt 34 to avoid the surface of the sand belt 34 being over-wet due to excessive moisture, and also to avoid too little moisture affecting the grinding effect. Maintaining moderate moisture helps to optimize the working state of the sand belt 34, thereby achieving a uniform grinding effect.

[0025] During use, when the sanding belt 34 with water adhered to it rotates to the position of the sponge roller 53, the sponge roller 53 will absorb the moisture on the surface of the sanding belt 34. At the same time, when the roller 1 32 rotates, under the action of the friction between the roller 1 32 and the friction wheel 52, the roller 1 32 drives the friction wheel 52 to rotate, and the friction wheel 52 drives the sponge roller 53 to rotate. The water inlet hole of the extrusion cylinder 54 will squeeze the water absorbed by the sponge roller 53 into the extrusion cylinder 54, and the extrusion cylinder 54 will discharge it, so that the sponge roller 53 can continuously absorb the moisture on the surface of the sanding belt 34. The sponge roller 53 can continuously absorb the moisture on the surface of the sanding belt 34, avoiding the surface of the sanding belt 34 from being overly wet due to excessive moisture, and also avoiding too little moisture affecting the grinding effect. Maintaining moderate moisture helps to optimize the working state of the sanding belt 34, thereby achieving a uniform grinding effect.

[0026] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A rough grinding device for resin sand castings, comprising a processing table (1), characterized in that: The top front side of the processing table (1) is provided with a positioning device (2) for fixing the tubular resin sand hardware accessories, and the top rear side of the processing table (1) is provided with an adapting device (3), and the adapting device (3) includes an elastic telescopic plate (31), the fixed end of the elastic telescopic plate (31) is fixed to the top of the processing table (1), and a roller 1 (32) is rotatably installed on the top of the fixed end of the elastic telescopic plate (31), and the roller 1 (32) is driven by a motor, and a roller 2 (33) is rotatably installed on the top of the telescopic end of the elastic telescopic plate (31), and the roller 1 (32) and the roller 2 are connected. An abrasive belt (34) is connected to the outer wall of the processing platform (33) in a transmission manner. A through slot is provided on the rear side of the top of the processing platform (1). A threaded rod (38) is rotatably installed inside the through slot of the processing platform (1). The external thread of the threaded rod (38) is connected to a push plate (37), and the push plate (37) is slidably installed inside the through slot of the processing platform (1). A plurality of elastic telescopic rods (36) are fixed on the front side of the push plate (37). A contact roller (35) is fixed on the front top of the plurality of elastic telescopic rods (36). The contact roller (35) contacts the front inner wall of the abrasive belt (34).

2. The rough grinding device for resin sand casting according to claim 1, characterized in that: Two of the plurality of friction rollers (35) form a group, and a distance of ten centimeters is left between the two friction rollers (35) in each group.

3. The rough grinding device for resin sand casting according to claim 1, characterized in that: The positioning device (2) includes a placement plate (21), the placement plate (21) is fixed on the top of the processing table (1), a placement disc (22) is evenly and equidistantly installed on the top of the placement plate (21), the placement disc (22) is driven by a servo motor (23), and the servo motor (23) is fixed on the bottom of the processing table (1), a slide groove is provided on the top of the placement disc (22), a bidirectional screw (24) is rotatably installed inside the slide groove of the placement disc (22), both sides of the outer wall of the bidirectional screw (24) are threadedly connected with a clamping plate (25), and the clamping plate (25) is slidably installed inside the slide groove of the placement disc (22).

4. The rough grinding device for resin sand castings according to claim 1, characterized in that: A wetting device (4) is provided on the front side of the sanding belt (34), and the wetting device (4) includes a U-shaped frame (41), the U-shaped frame (41) is fixed on the top of the processing table (1), a water tank (47) is fixed on one side of the top of the U-shaped frame (41), a pump (46) is fixed on the top of the water tank (47), a straight pipe (45) is fixed to the water outlet end of the pump (46), and three elastic telescopic rods (42) are fixed evenly and equidistantly on the top of the U-shaped frame (41), and through-hole rollers (43) are rotatably installed on the bottom front sides of the telescopic ends of the three elastic telescopic rods (42), and a water injection tray (44) is rotatably installed on the top of the through-hole roller (43), and the water injection tray (44) and the straight pipe (45) are connected by a hose.

5. The rough grinding device for resin sand casting according to claim 4, characterized in that: A semi-arc plate (48) is fixed to the bottom of the front side of the telescopic end of the second elastic telescopic rod (42), and the semi-arc plate (48) is located on the rear side of the through-hole roller (43). The semi-arc plate (48) and the through-hole roller (43) are concentrically arranged, and a through opening is opened on the side of the semi-arc plate (48) close to the sanding belt (34).

6. The rough grinding device for resin sand castings according to claim 4, characterized in that: A resistance ring (49) is fixed on the upper outer wall of the through-hole roller (43), the inner wall of the semi-arc plate (48) is set as a rough surface, the outer wall of the resistance ring (49) is in contact with the inner wall of the semi-arc plate (48), and the outer wall of the through-hole roller (43) is set as a smooth surface.

7. The rough grinding device for resin sand castings according to claim 4, characterized in that: An adsorption device (5) is provided below the U-shaped frame (41), and the adsorption device (5) comprises a rotating rod (51) and an extrusion cylinder (54). The rotating rod (51) is rotatably mounted on the top of the inner wall of the U-shaped frame (41). A sponge roller (53) is fixed to the outside of the rotating rod (51), and a friction wheel (52) is fixed to the bottom of the rotating rod (51). The extrusion cylinder (54) is fixed to the top of the inner wall of the U-shaped frame (41). The extrusion cylinder (54) contacts the outer wall of the sponge roller (53), and a water inlet hole is provided on a side of the extrusion cylinder (54) close to the sponge roller (53).

8. The rough grinding device for resin sand castings according to claim 7, characterized in that: The outer wall of the friction wheel (52) is a rough surface, the outer wall of the rotating roller (32) is a rough surface, and the outer wall of the friction wheel (52) is in contact with the outer wall of the rotating roller (32).

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