Furan resin sand mixer for casting and using method

Abstract

The invention relates to the technical field of furan resin sand casting, in particular to a furan resin sand mixer for casting and a using method thereof.The furan resin sand mixer for casting comprises a stirring mechanism and a sand mixing mechanism, and the stirring mechanism comprises a material mixing box, a stirring assembly arranged on the inner side of the material mixing box, a material transferring assembly arranged on the outer side of the material mixing box and a base frame fixedly arranged on the bottom face of the material mixing box; the material rotating assembly comprises a U-shaped plate, a screw rod and a material sealing plate. The conveying mechanism comprises conveying assemblies, a first steering assembly, a second steering assembly and a discharging assembly, the two conveying assemblies are arranged on the same horizontal section in an L shape, and the two conveying assemblies are connected through the second steering assembly; the end, away from the second steering assembly, of the conveying assembly located on the upper portion is connected with the discharging frame through the first steering assembly. According to the sand mixer, uninterrupted and continuous material mixing can be achieved, the production efficiency is high, the caking rate of mixed materials obtained after material mixing is low, the controllability of the material injection amount is high, and the overall practicability is good.

Description

Technical Field

[0001] The invention relates to the technical field of furan resin sand casting, in particular to a furan resin sand mixer for casting and a use method thereof. Background Art

[0002] In recent years, furan resin has been widely used in casting production, especially urea-formaldehyde furan resin, which has rapidly attracted widespread attention from the foundry industry in various countries around the world due to its advantages of low viscosity, high strength, strong acid resistance, strong alkali resistance, high temperature resistance, good disintegration, and simple synthesis process. The furan resin self-hardening sand process has the advantages of self-hardening at room temperature, low energy consumption, high production efficiency, high recovery rate of old sand, high dimensional accuracy of castings, and good surface quality of castings. Therefore, furan resin has become the largest amount of casting resin in my country. In the furan resin sand casting process, the staff first adds each raw material into the sand mixer according to a certain proportion, and after fully mixing in the sand mixer, the mixed material is fed into the mold through the feeding mechanism for compaction and molding. For example, the existing public document CN115647286B-a casting sand mixer and the existing public document CN212239118U-an intelligent sand mixer system both disclose a sand mixer for furan resin sand casting. Although the sand mixer can achieve full mixing of the raw materials, thereby facilitating the molding of the furan resin sand mixed material, the existing sand mixer still has the following deficiencies in actual use: 1. When the existing sand mixer is in use, the mixing box for mixing materials is in an integrated box setting, which results in that after the mixing is completed in the mixing box, the next batch of raw materials cannot be mixed before the mixed materials are completely discharged. After the mixed materials are completely discharged, it takes a certain amount of time to mix the raw materials inside the mixing box. The overall mixing method has the disadvantage of low production efficiency; 2. When the existing sand mixer is in use, the mixed material is generally fed into the mold through two screw conveyors that can rotate horizontally. In actual use, this feeding method needs to be squeezed when the screw conveyor conveys the mixed material, and the mixed material itself has a certain viscosity, which causes the mixed material discharged into the mold to easily clump, which affects the subsequent casting quality on the one hand, and on the other hand, the amount of the mixed material fed into the mold cannot be well controlled; Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the fact that the above-mentioned existing furan resin sand mixer for casting has the problem of low mixing efficiency in actual use, a furan resin sand mixer for casting is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a furan resin sand mixer for casting, comprising: a stirring mechanism, including a mixing box, a stirring assembly arranged on the inner side of the mixing box, a material transfer assembly arranged on the outer side of the mixing box and a base frame fixedly arranged on the bottom surface of the mixing box, the material transfer assembly comprises a U-shaped plate, a screw rod and a sealing plate, a plurality of partitions are fixedly arranged in an array along the left and right directions inside the mixing box, and the plurality of partitions divide the interior of the mixing box into a plurality of storage chambers, a through groove for gap fitting of the sealing plate is opened on the bottom surface of the mixing box along the left and right directions, and the length dimension of the sealing plate is larger than the length dimension of the bottom plate of the mixing box, a discharge port is opened in the middle part of the sealing plate, and a discharge frame is fixedly arranged on the bottom surface of the sealing plate outside the discharge port, and the U-shaped plate is sleeved on the mixing box from the rear The outer side, and the lower end of the U-shaped plate is fixedly arranged on the outer side wall of the discharging frame, a linkage ear for spiral sleeve connection of a screw rod is fixedly arranged in the middle of one side of the vertical plate of the U-shaped plate, the axis of the screw rod is arranged along the left-right direction, and both ends of the screw rod are rotatably connected to the rear outer wall of the mixing box through rolling bearings, one end of the screw rod is embedded in the output end of the second motor, and the second motor is fixedly arranged on the outer side wall of the mixing box, and a feed pipe is fixedly arranged on the horizontal plate of the U-shaped plate above the mixing box; and a feeding mechanism, including a conveying assembly, a first steering assembly, a second steering assembly and a discharging assembly, the two conveying assemblies are arranged in an L shape on the same horizontal cross-section, and the two conveying assemblies are connected by the second steering assembly, and the end of the upper conveying assembly away from the second steering assembly is connected to the discharging frame through the first steering assembly.

[0006] The beneficial effects of the present invention are as follows: when the furan resin sand mixer is in use, the interior of the mixing box is divided into various storage chambers by partitions, but each storage chamber shares a stirring assembly. During operation, the rotation of the screw rod can be realized through the work of the second motor, and because of the spiral matching between the linkage ear and the screw rod, the U-shaped plate drives the sealing plate to move in the direction of the screw rod axis, and finally the discharge frame is switched between the various storage chambers, thereby realizing the operation of discharging the mixed materials in each storage chamber. Because each storage chamber shares a stirring assembly, when one of the storage chambers is discharging or adding materials, the other storage chambers can maintain a stirring state, and finally uninterrupted and continuous discharging can be realized, which effectively improves the production efficiency and has good overall practicality.

[0007] As a preferred solution of the furan resin sand mixer for casting of the present invention, wherein: limiting strips are symmetrically fixed on both sides of the sealing plate, and a second limiting groove for gap matching with the limiting strips is opened on the mixing box that passes through both sides of the groove; a first limiting groove is opened on the rear outer wall of the mixing box along the left and right directions, and a T-shaped plate that gap matches with the first limiting groove is fixed on one side surface of the vertical plate of the U-shaped plate.

[0008] As a preferred solution of the furan resin sand mixer for casting of the present invention, wherein: the end face of the U-shaped plate horizontal plate above the mixing box is rotatably connected with an I-shaped wheel through a rotating column, and a guide plate with a convex cross-section is fixedly provided on the front outer wall of the mixing box below the I-shaped wheel along the left and right directions, and the I-shaped wheel is gap-fitted on the guide plate.

[0009] As a preferred solution of the furan resin sand mixer for casting of the present invention, a blocking plate is slidably inserted on one side surface of the discharge frame, and a sealing groove for the clearance fit of the blocking plate is opened on the inner wall of the discharge frame, one side of the bottom surface of the blocking plate is fixedly connected to one end of the cylinder through a connecting ear, and the fixed section of the cylinder is fixedly sleeved on the discharge frame.

[0010] As a preferred embodiment of the furan resin sand mixer for casting of the present invention, the stirring assembly includes a stirring plate and a stirring shaft, the stirring shaft slides through each partition, and both ends of the stirring shaft are rotatably sleeved on the side wall of the mixing box through rolling bearings, one end of the stirring shaft extends to the outside of the mixing box and is embedded in the output end of the first motor, and the first motor is fixed on the outer wall of the mixing box; a connecting disk is provided in each storage cavity, and a plurality of connecting disks are fixedly sleeved on the same stirring shaft, a plurality of connecting plates are fixedly provided on the side wall of the connecting disk along a circumferential array, and a stirring plate is fixedly provided on the other end of the connecting plate, and the inner bottom surface of the matching body of the mixing box and the blocking plate is arranged in a semicircular shape concentric with the stirring shaft; a plurality of auxiliary stirring plates are fixedly provided on one side surface of the connecting plate in an array along the long side direction, and the auxiliary stirring plates on two adjacent connecting plates are respectively provided at both ends of the connecting disk.

[0011] In view of the problem that the quality of the discharged mixed materials in the existing sand mixers is insufficient in actual use, the furan resin sand mixer for casting of the present invention is further optimized and improved, wherein: the conveying component includes an outer protective box and a conveyor belt arranged inside the outer protective box, the inner sides of both ends of the conveyor belt are slidably sleeved with conveying rollers, and the conveying rollers are fixedly sleeved with rotating rods, both ends of the rotating rods are rotatably sleeved on the outer protective box through rolling bearings, one end of one of the rotating rods extends to the outside of the outer protective box and is embedded in the output end of the third motor, and the third motor is fixedly arranged on the outer wall of the outer protective box; the first steering component includes a feed sleeve, a first limit sleeve and a first gear disc, a feed frame is fixedly arranged on the top surface of the feed sleeve, and a second connecting flange is fixedly arranged on the outer wall of the upper end of the feed frame, a first connecting flange is fixedly arranged on the outer wall of the lower end of the discharge frame, and the first connecting flange and the second connecting flange are fixed by bolts, and a U-shaped vertical cross-section is fixedly arranged on the outer side of the feed port on the top surface of the outer protective box The first limiting sleeve, a first limiting ring with an L-shaped vertical cross-section is fixedly provided on the outer wall of the lower end of the feed sleeve, and the first limiting ring and the first limiting sleeve are gap-matched, a first ring tooth is fixedly sleeved on the outer wall of the first limiting sleeve, and the first ring tooth is meshed with the first toothed disc, the first toothed disc is fixedly connected to the first output shaft of the fourth motor, and the fourth motor is fixedly connected to the outer wall of the discharging frame; the second steering assembly includes a discharging sleeve, a second limiting sleeve and a second toothed disc, the discharging sleeve is fixedly arranged on the outer side of the discharging port on the bottom surface of the upper outer protective box, and the second limiting sleeve is fixedly arranged on the outer side of the feed port on the top surface of the lower outer protective box, a second limiting ring is fixedly provided on the outer wall of the lower end of the discharging sleeve along the circumferential direction, and a limiting ring groove for gap matching of the second limiting ring is opened on the inner wall of the second limiting sleeve, a second ring tooth is also fixedly sleeved on the outer side of the discharging sleeve, and the second ring tooth is meshed with the second toothed disc, the second toothed disc is fixedly connected to the second output shaft of the fifth motor, and the fifth motor is fixedly connected to the outer protective box below.

[0012] Another beneficial effect of the present invention is that when the furan resin sand mixer is in use, the mixed material discharged through the discharge frame is conveyed through the feed frame, and finally falls into the conveyor belt in the upper conveying component through the feed port, and finally falls from the discharge sleeve to the conveyor belt in the lower conveying component under the conveyance of the conveyor belt, and is finally discharged through the conveyor belts in the two conveying components. This design method uses the conveyor belt to replace the traditional spiral conveying, which can effectively reduce the agglomeration problem existing in the conveying process. On the one hand, it can improve the quality of the discharged mixed material, and on the other hand, it is also convenient to effectively control the amount of the discharged mixed material, and the overall practicality is good.

[0013] As a preferred solution of the furan resin sand mixer for casting of the present invention, the discharging assembly includes a discharging box and an extension sleeve slidably sleeved on the outer side of the lower end of the discharging box, the discharging box is fixedly arranged on the outer side of the discharging port on the bottom surface of the outer protective box below, T-shaped columns are symmetrically arranged on both sides of the discharging box, and the upper ends of the T-shaped columns are fixedly connected to the outer side walls of the discharging box through connecting blocks, a limiting block is slidably sleeved on the T-shaped column, and the limiting block is fixedly arranged on the outer side wall of the extension sleeve, and a spring is slidably sleeved on the T-shaped column below the limiting block; a pull handle is fixedly arranged on an outer side wall of the extension sleeve.

[0014] As a preferred solution of the furan resin sand mixer for casting of the present invention, a support frame is fixedly provided on the bottom surface of the outer protective box located above, and a universal wheel is fixedly installed on the bottom surface of the support frame; an adsorption tube is fixedly connected to the top surface of the outer protective box above the discharge box.

[0015] As a preferred embodiment of the present invention, a furan resin sand mixer for casting is provided, wherein: a material spreading mechanism is arranged inside the two conveying components and above the conveyor belt, the material spreading mechanism comprises a material spreading plate and a material laying plate, a first adjustment groove is arranged in an array along the long side direction on the material laying plate, and a plurality of first adjustment grooves are connected and arranged through a second adjustment groove, material spreading plates are symmetrically arranged on both sides of the first adjustment groove, and two aligned material spreading plates are fixedly connected by connecting strips, a plurality of connecting strips are fixedly connected by connecting rods, the connecting strips are gap-fitted in the first adjustment groove, and the connecting rods are gap-fitted in the second adjustment groove, and the long sides of the material spreading plates are arranged parallel to the conveying direction of the conveyor belt; adjustment bolts are symmetrically fixed on both sides of the top surface of the material laying plate, and the adjustment bolts are fixed with the top plate of the outer protective box, and the lower end of the material laying plate is arranged with an inclined surface close to the feed inlet of the outer protective box.

[0016] In addition, the present invention also provides the following technical solution: a method for using a furan resin sand mixer for casting, wherein the furan resin sand mixer for casting is operated according to the following steps; S1: Connect the feed pipe to the feed mechanism, and input various raw materials into the storage chamber through the feed mechanism; S2: After the addition of multiple raw materials into one storage chamber is completed, the material transfer assembly drives the feed pipe to move to another storage chamber and continues to add materials; S3: At the same time, the stirring component will stir the various raw materials in the storage chamber to form a mixed material. When the stirring work is completed, the material transfer component moves to its position, and then opens the blocking plate, and the mixed material in the storage chamber is discharged into the feeding mechanism through the discharge frame; S4: In step S3, after the mixed material is discharged, the material is added in the same manner as in steps S1-S2; S5: The mixed material entering the feeding mechanism is finally transported into the mold by the staff adjusting the position of the feeding mechanism to achieve the shaping operation of the mixed material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 The present invention is a schematic diagram of the overall structure of a furan resin sand mixer for casting.

[0018] Figure 2 It is a schematic diagram of the overall structure of the stirring mechanism in the present invention.

[0019] Figure 3 For the present invention Figure 2 Vertical cross-section of the structure in the left-right direction.

[0020] Figure 4 For the present invention Figure 2 Vertical cross-section of the structure in the front-to-back direction.

[0021] Figure 5 For the present invention Figure 2 Exploded view of the structure.

[0022] Figure 6 It is a schematic diagram of the coordination of the material feeding mechanism and the material spreading mechanism in the present invention.

[0023] Figure 7 It is a cross-sectional view of the matching body of the material feeding mechanism and the material spreading mechanism located at the top in the present invention in the vertical direction.

[0024] Figure 8 It is an exploded view of the material spreading mechanism in the present invention.

[0025] Fig. 9 It is a schematic diagram of the overall structure of the feeding mechanism located at the bottom in the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , which is the first embodiment of the present invention, provides a furan resin sand mixer for casting. When the sand mixer is in use, various raw materials are added to the stirring mechanism 100 according to a certain proportion. After the raw materials are fully stirred and mixed by the stirring mechanism 100, the mixed material is finally discharged into the feeding mechanism 200, and then input into the shaping mold through the feeding mechanism 200 to achieve casting molding.

[0031] Specifically, it includes a stirring mechanism 100, including a mixing box 101, a stirring component 102 arranged on the inner side of the mixing box 101, a material transfer component 103 arranged on the outer side of the mixing box 101 and a base frame 104 fixed on the bottom surface of the mixing box 101; and a feeding mechanism 200, including a conveying component 201, a first steering component 202, a second steering component 203 and a discharging component 204, the two conveying components 201 are arranged in an L shape on the same horizontal section, and the two conveying components 201 are connected by the second steering component 203, and the end of the upper conveying component 201 away from the second steering component 203 is connected to the discharging frame 103c-2 through the first steering component 202.

[0032] See Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the material transfer assembly 103 includes a U-shaped plate 103a, a screw rod 103b and a sealing plate 103c. A plurality of partitions 101a are fixedly arranged in an array along the left-right direction inside the mixing box 101, and the plurality of partitions 101a divide the inside of the mixing box 101 into a plurality of material storage chambers. A through groove 101e for the gap fit of the sealing plate 103c is opened on the bottom surface of the mixing box 101 along the left-right direction, and the length of the sealing plate 103c is greater than the length of the bottom plate of the mixing box 101. In this way, when the sealing plate 103c moves horizontally, the sealing plate 103c The through groove 101e can always be blocked. Limiting strips 103c-1 are symmetrically fixed on both sides of the sealing plate 103c. Second limiting grooves 101d for clearance fit of the limiting strips 103c-1 are provided on the mixing box 101 on both sides of the through groove 101e. This arrangement can play a limiting and guiding role in the movement of the sealing plate 103c. A discharge port 103c-4 is provided in the middle of the sealing plate 103c, and a discharge frame 103c-2 is fixed on the bottom surface of the sealing plate 103c outside the discharge port 103c-4 to realize the discharge of the mixed material. The U-shaped plate 103a is sleeved on the outside of the mixing box 101 from the rear, and the lower end of the U-shaped plate 103a is fixed to the outer side wall of the discharge frame 103c-2. A linkage ear 103a-2 for spiral sleeve connection of the screw rod 103b is fixed in the middle of one side of the vertical plate of the U-shaped plate 103a. The axis of the screw rod 103b is arranged in the left and right directions, and both ends of the screw rod 103b are rotatably connected to the rear outer wall of the mixing box 101 through rolling bearings. One end of the screw rod 103b is embedded in the output end of the second motor 103b-1, and the second The motor 103b-1 is fixed on the outer wall of the mixing box 101. A first limiting groove 101c is provided on the rear outer wall of the mixing box 101 in the left-right direction. A T-shaped plate 103a-5 is fixed on one side of the vertical plate of the U-shaped plate 103a, which is clearance-matched with the first limiting groove 101c. This arrangement can play a limiting and guiding role in the movement of the U-shaped plate 103a. A feeding pipe 103a-1 is fixed on the horizontal plate of the U-shaped plate 103a above the mixing box 101. The feeding pipe 103a-1 is connected to the discharge pipe of the feeding mechanism, so as to be used for adding various raw materials. A blocking plate 103d is slidably inserted on one side of the discharging frame 103c-2, and a sealing groove 103c-5 for gap fitting of the blocking plate 103d is provided on the inner wall of the discharging frame 103c-2 to improve the sealing performance between the discharging frame 103c-2 and the blocking plate 103d. One side of the bottom surface of the blocking plate 103d is fixedly connected to one end of the cylinder 103d-2 through a connecting ear 103d-1, and the fixed section of the cylinder 103d-2 is fixedly sleeved on the discharging frame 103c-2. When the above arrangement is in use, the screw rod 103b can be rotated by the operation of the second motor 103b-1, and because of the spiral matching arrangement between the screw rod 103b and the linkage ear 103a-2, the linkage ear 103a-2 can drive the U-shaped plate 103a to reciprocate in the axial direction of the screw rod 103b, so that the feed pipe 103a-1 and the discharge frame 103c-2 can be switched between various storage chambers. When the raw materials in a certain storage chamber are mixed, the discharge frame 103c-2 moves to the bottom of the storage chamber, and the cylinder 10 The contraction of 3d-2 can make the blocking plate 103d lose the blocking material, so that the mixed material in the storage chamber is discharged from the discharge frame 103c-2. When the mixed material in the storage chamber is completely discharged, the cylinder 103d-2 extends, the blocking plate 103d re-blocks the discharge frame 103c-2, and the feed pipe 103a-1 starts to inject material. During the injection process, the raw materials in other storage chambers have been mixed. At this time, it is only necessary to control the U-shaped plate 103a to drive the discharge frame 103c-2 to move to the bottom of the storage chamber to repeat the above-mentioned discharge and injection operations.

[0033] Furthermore, the end face of the transverse plate of the U-shaped plate 103a above the mixing box 101 is rotatably connected to a work-shaped wheel 103a-3 via a rotating column 103a-4, and a guide plate 101b with a convex cross-section is fixedly provided on the front outer wall of the mixing box 101 below the work-shaped wheel 103a-3 in the left and right directions, and the work-shaped wheel 103a-3 is loosely fitted on the guide plate 101b. This arrangement allows the work-shaped wheel 103a-3 to roll on the guide plate 101b during the movement of the U-shaped plate 103a, thereby providing auxiliary guidance when the U-shaped plate 103a moves.

[0034] In addition, it should be noted that the device also includes a controller (not shown in the drawings) for controlling various electrical components, and the controller is arranged at a position convenient for operation by the staff. Example 2

[0035] Reference Figure 4 and Figure 5 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the structure of the stirring component 102 is further refined to facilitate better implementation of the present invention.

[0036] Specifically, the stirring assembly 102 includes a stirring plate 102a and a stirring shaft 102b, the stirring shaft 102b slides through each partition 101a, and both ends of the stirring shaft 102b are rotatably sleeved on the side wall of the mixing box 101 through rolling bearings, one end of the stirring shaft 102b extends to the outside of the mixing box 101 and is embedded in the output end of the first motor 102b-1, and the first motor 102b-1 is fixed on the outer wall of the mixing box 101; A connecting disk 102b-2 is provided in each material storage cavity, and a plurality of connecting disks 102b-2 are fixedly sleeved on the same stirring shaft 102b, a plurality of connecting plates 102a-1 are fixedly provided on the side wall of the connecting disk 102b-2 in a circumferential array, and a stirring plate 102a is fixedly provided at the other end of the connecting plate 102a-1, and the inner bottom surface of the matching body of the mixing box 101 and the blocking plate 103d is arranged in a semicircular shape concentric with the stirring shaft 102b, thereby improving the adequacy of stirring; When the above arrangement is in use, the operation of the first motor 102b-1 can realize the synchronous rotation of the stirring shaft 102b driving multiple connecting disks 102b-2, so that the multiple stirring shafts 102b can drive the stirring plates 102a in each storage chamber to stir the raw materials synchronously.

[0037] Furthermore, a plurality of auxiliary stirring plates 102a-2 are fixedly arranged in an array along the long side direction on one side surface of the connecting plate 102a-1, and the auxiliary stirring plates 102a-2 on two adjacent connecting plates 102a-1 are arranged at both ends of the connecting plate 102b-2. This arrangement can improve the adequacy of stirring. Example 3

[0038] Reference Figure 6 , Figure 7 and Fig. 9 , which is the third embodiment of the present invention, is based on any of the above embodiments, except that this embodiment is proposed in order to improve the quality of the discharged mixed material and avoid the problems of agglomeration of the mixed material and inaccurate control of the amount of material clamped when the mixed material is put into the mold.

[0039] Specifically, the conveying assembly 201 includes an outer protective box 201a and a conveyor belt 201b arranged inside the outer protective box 201a, and conveyor rollers 201b-1 are slidably sleeved on the inner sides of both ends of the conveyor belt 201b, and a rotating rod 201b-2 is fixedly sleeved in the conveyor roller 201b-1, and both ends of the rotating rod 201b-2 are rotatably sleeved on the outer protective box 201a through rolling bearings, one end of one of the rotating rods 201b-2 extends to the outside of the outer protective box 201a and is embedded in the output end of the third motor 201b-3, and the third motor 201b-3 is fixedly arranged on the outer side wall of the outer protective box 201a; When the above arrangement is in use, the third motor 201b-3 can be used to drive the rotating rod 201b-2 to drive the conveying roller 201b-1 to rotate, thereby realizing the conveying of the mixed material by the conveyor belt 201b. Through the cooperation between the conveying component 201, the first steering component 202 and the second steering component 203, the mixed material in the stirring mechanism 100 can be fed into the shaping mold.

[0040] The first steering assembly 202 includes a feed sleeve 202a, a first limiting sleeve 202b and a first toothed disc 202c. The feed sleeve 202a is used to transport the mixed material in the stirring mechanism 100 to the conveying assembly 201 located above. A feed frame 202a-1 is fixedly provided on the top surface of the feed sleeve 202a, and a second connecting flange 202a-2 is fixedly provided on the upper outer wall of the feed frame 202a-1. A first connecting flange 103c-3 is fixedly provided on the lower outer wall of the discharge frame 103c-2, and the first connecting flange 103c-3 and the second connecting flange 202a-2 are fixed by bolts to realize a detachable connection between the discharge frame 103c-2 and the feed frame 202a-1. A U-shaped vertical cross-section is fixedly provided on the outer side of the feed port on the top surface of the outer protective box 201a. A first limiting sleeve 202b, a first limiting ring 202a-3 with an L-shaped vertical cross-section is fixedly provided on the outer side wall of the lower end of the feed sleeve 202a, and the first limiting ring 202a-3 and the first limiting sleeve 202b are clearance-matched, so that on the one hand, the limiting between the feed sleeve 202a and the first limiting sleeve 202b can be achieved, and on the other hand, the free rotation of the feed sleeve 202a relative to the first limiting sleeve 202b can also be achieved. A first ring tooth 202b-1 is fixedly sleeved on the outer side wall of the first limiting sleeve 202b, and the first ring tooth 202b-1 is meshed with the first toothed disc 202c, the first toothed disc 202c is fixedly connected to the first output shaft 202c-2 of the fourth motor 202c-1, and the fourth motor 202c-1 is fixedly connected to the outer side wall of the discharge frame 103c-2; When the above-mentioned arrangement is in use, the operation of the fourth motor 202c-1 can realize the first output shaft 202c-2 driving the first gear disc 202c to rotate. Because of the meshing arrangement between the first gear disc 202c and the first ring tooth 202b-1, the operation of the fourth motor 202c-1 can realize the first limit sleeve 202b driving the upper conveying assembly 201 to rotate in the horizontal direction.

[0041] The second steering assembly 203 includes a discharge sleeve 203a, a second limiting sleeve 203b and a second toothed disc 203c. The discharge sleeve 203a is used to transport the mixed material in the upper conveying assembly 201 to the lower conveying assembly 201. The discharge sleeve 203a is fixedly arranged on the outer side of the discharge port 103c-4 on the bottom surface of the upper outer protective box 201a. At the same time, the second limiting sleeve 203b is fixedly arranged on the outer side of the feed port on the top surface of the lower outer protective box 201a. A second limiting ring 203a-2 is fixedly arranged on the outer side wall of the lower end of the discharge sleeve 203a along the circumferential direction. At the same time, a second limiting ring 203 is opened on the inner wall of the second limiting sleeve 203b. a-2 clearance-matched limiting ring groove 203b-1, which can realize the matching and limiting between the discharge sleeve 203a and the second limiting sleeve 203b on the one hand, and can realize the relative rotation between the discharge sleeve 203a and the second limiting sleeve 203b on the other hand, the outer side of the discharge sleeve 203a is also fixedly sleeved with a second ring tooth 203a-1, and the second ring tooth 203a-1 is meshed with the second toothed disc 203c, the second toothed disc 203c is fixedly connected to the second output shaft 203c-1 of the fifth motor 203c-2, and the fifth motor 203c-2 is fixedly connected to the outer protective box 201a below; When the above-mentioned arrangement is in use, the operation of the fifth motor 203c-2 can realize that the second output shaft 203c-1 drives the second gear disc 203c to rotate. Because of the meshing arrangement between the second gear disc 203c and the second ring tooth 203a-1, under the operation of the fifth motor 203c-2, the conveying component 201 located below can be rotated in the horizontal direction relative to the conveying component 201 located above.

[0042] Furthermore, a support frame 205 is fixedly provided on the bottom surface of the outer protective box 201a located above, and a universal wheel 205a is fixedly installed on the bottom surface of the support frame 205. This arrangement can support and stabilize the movement of the feeding component 201 located above. Example 4

[0043] Reference Fig. 9 , which is the fourth embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed to avoid dust from being generated during material discharge due to the different heights of the molds, thereby polluting the working environment of the staff.

[0044] Specifically, the discharge assembly 204 includes a discharge box 204a and an extension sleeve 204b slidably sleeved on the outer side of the lower end of the discharge box 204a. The discharge box 204a is fixedly arranged on the outer side of the discharge port 103c-4 on the bottom surface of the outer protective box 201a below. T-shaped columns 204a-1 are symmetrically arranged on both sides of the discharge box 204a, and the upper ends of the T-shaped columns 204a-1 are connected to the outer wall of the discharge box 204a through the connecting block 204a-2. Fixed connection, the T-shaped column 204a-1 is slidably sleeved with a limit block 204b-2, and the limit block 204b-2 is fixedly arranged on the outer side wall of the extension sleeve 204b, and a spring 204a-3 is slidably sleeved on the T-shaped column 204a-1 below the limit block 204b-2, and the setting of the spring 204a-3 can realize the reset of the extension sleeve 204b, and a pull handle 204b-1 is fixedly arranged on an outer side wall of the extension sleeve 204b; When the above arrangement is in use, the mixed material is finally discharged from the discharge box 204a. When it is necessary to inject material into the mold, the staff can manually pull down the handle 204b-1 according to the height of the mold. Driven by the handle 204b-1, the extension sleeve 204b moves downward, so that the mixed material discharged through the discharge box 204a is still located in the extension sleeve 204b, thereby achieving effective dust prevention during discharge.

[0045] Furthermore, an adsorption tube 206 is fixedly connected to the top surface of the outer protective box 201a above the discharge box 204a, and the other end of the adsorption tube 206 is connected to a negative pressure adsorption mechanism to reduce dust by negative pressure adsorption to avoid dust overflow and environmental pollution. Example 5

[0046] Reference Figure 6 , Figure 7 and Figure 8 , which is the fifth embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed to prevent the mixed material from agglomerating and affecting the shaping effect when the conveying component 201 conveys the mixed material.

[0047] Specifically, the two conveying components 201 are provided with a spreading mechanism 300 above the conveyor belt 201b, and the spreading mechanism 300 includes a spreading plate 301 and a spreading plate 302. The spreading plate 302 is provided with a first adjustment groove 302b in an array along the long side direction, and a plurality of first adjustment grooves 302b are connected through a second adjustment groove 302b-1. The spreading plates 301 are symmetrically provided on both sides of the first adjustment groove 302b, and the two aligned spreading plates 301 are fixedly connected by a connecting strip 301b. Then, a plurality of connecting strips 301b are fixedly connected by connecting rods 301a, the connecting strips 301b are loosely fitted in the first adjusting groove 302b, and the connecting rods 301a are loosely fitted in the second adjusting groove 302b-1, and the long side of the spreading plate 301 is arranged parallel to the conveying direction of the conveyor belt 201b, which can realize the vertical movement of the connecting strips 301b in the first adjusting groove 302b, and the vertical movement of the connecting rods 301a in the second adjusting groove 302b-1; Adjustment bolts 302a are symmetrically fixed on both sides of the top surface of the paving plate 302, and the adjustment bolts 302a are fixed with the top plate of the outer protective box 201a. The lower end of the paving plate 302 is provided with an inclined surface 302c near the feeding port of the outer protective box 201a. The setting of the inclined surface 302c can improve the effect of paving the mixed material above the conveyor belt 201b. When the above arrangement is in use, during the process of the conveyor belt 201b conveying the mixed material, the mixed material can be broken up by the setting of the spreading plate 301 to avoid the problem of mixed material agglomeration, and the mixed material can be spread by the setting of the paving plate 302, thereby improving the uniformity of the distribution of the mixed material on the conveyor belt 201b; in addition, by adjusting the setting of the bolt 302a, the position of the paving plate 302 in the vertical direction can be adjusted, so that the paving thickness of the mixed material on the conveyor belt 201b can be controlled as needed, thereby indirectly achieving other material control functions. Example 6

[0048] This embodiment is the sixth embodiment of the present invention, and provides a method for using a furan resin sand mixer for casting. Specifically, the operation is performed according to the following steps: S1: Connect the feed pipe 103a-1 to the feed mechanism, and input various raw materials into the storage chamber through the feed mechanism; S2: After the addition of multiple raw materials into a storage cavity is completed, the material transfer component 103 drives the feed pipe 103a-1 to move to another storage cavity and continue to add materials; S3: At the same time, the stirring component 102 stirs the various raw materials in the storage chamber to form a mixed material. When the stirring work is completed, the material transfer component 103 moves to its position, and then opens the blocking plate 103d, and the mixed material in the storage chamber is discharged into the feeding mechanism 200 through the discharge frame 103c-2; S4: In step S3, after the mixed material is discharged, the material is added in the same manner as in steps S1-S2; S5: The mixed material entering the feeding mechanism 200 is finally transported into the mold after the staff adjusts the position of the feeding mechanism 200 to achieve the shaping operation of the mixed material.

[0049] In addition, it should be noted that the components not described in detail in this article are prior art.

[0050] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0052] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A furan resin sand mixer for casting, characterized in that: include, The stirring mechanism (100) comprises a mixing box (101), a stirring assembly (102) arranged inside the mixing box (101), a material transfer assembly (103) arranged outside the mixing box (101), and a base frame (104) fixedly mounted on the bottom surface of the mixing box (101), wherein the material transfer assembly (103) comprises a U-shaped plate (103a), a screw rod (103b), and a sealing plate (103c), and the interior of the mixing box (101) is fixedly provided with a plurality of A plurality of partitions (101a), wherein the plurality of partitions (101a) divide the interior of a mixing box (101) into a plurality of material storage chambers; a through groove (101e) for gap fitting of a sealing plate (103c) is provided on the bottom surface of the mixing box (101) in the left-right direction; the length of the sealing plate (103c) is greater than the length of the bottom plate of the mixing box (101); a discharge port (103c-4) is provided in the middle of the sealing plate (103c); and the discharge port (103 A discharging frame (103c-2) is fixedly provided on the bottom surface of the sealing plate (103c) on the outside of the mixing box (101), the U-shaped plate (103a) is sleeved on the outside of the mixing box (101) from the rear of the mixing box (101), and the lower end of the U-shaped plate (103a) is fixedly provided on the outer side wall of the discharging frame (103c-2), and a linkage ear (103a-2) for spiral sleeve connection of a screw rod (103b) is fixedly provided in the middle of one side of the vertical plate of the U-shaped plate (103a), and the screw rod ( The axis of the U-shaped plate (103a) is arranged in the left-right direction, and both ends of the screw rod (103b) are rotatably connected to the rear outer wall of the mixing box (101) through rolling bearings, one end of the screw rod (103b) is embedded in the output end of the second motor (103b-1), and the second motor (103b-1) is fixedly arranged on the outer side wall of the mixing box (101), and a feeding pipe (103a-1) is fixedly arranged on the horizontal plate of the U-shaped plate (103a) above the mixing box (101); and, The feeding mechanism (200) comprises a conveying assembly (201), a first steering assembly (202), a second steering assembly (203) and a discharging assembly (204); the two conveying assemblies (201) are arranged in an L shape on the same horizontal cross section, and the two conveying assemblies (201) are connected via the second steering assembly (203); and the end of the upper conveying assembly (201) away from the second steering assembly (203) is connected to the discharging frame (103c-2) via the first steering assembly (202).

2. A furan resin sand mixer for casting as claimed in claim 1, characterized in that: Limiting strips (103c-1) are symmetrically fixedly provided on both sides of the sealing plate (103c), and second limiting slots (101d) for clearance fit of the limiting strips (103c-1) are provided on the mixing box (101) on both sides of the through slot (101e); A first limiting groove (101c) is provided on the rear outer wall of the mixing box (101) in the left-right direction, and a T-shaped plate (103a-5) is fixedly provided on one side surface of the vertical plate of the U-shaped plate (103a) and is clearance-matched with the first limiting groove (101c).

3. A furan resin sand mixer for casting as claimed in claim 2, characterized in that: A U-shaped plate (103a) above the mixing box (101) is rotatably connected to an I-shaped wheel (103a-3) on its transverse plate end surface via a rotating column (103a-4); a guide plate (101b) having a convex cross-section is fixedly provided along the left-right direction on the front outer wall of the mixing box (101) below the I-shaped wheel (103a-3); and the I-shaped wheel (103a-3) is loosely fitted on the guide plate (101b).

4. A furan resin sand mixer for casting as claimed in claim 2, characterized in that: A blocking plate (103d) is slidably inserted on one side surface of the discharging frame (103c-2), and a sealing groove (103c-5) for gap fitting of the blocking plate (103d) is provided on the inner wall of the discharging frame (103c-2); one side of the bottom surface of the blocking plate (103d) is fixedly connected to one end of the cylinder (103d-2) via a connecting ear (103d-1), and the fixed section of the cylinder (103d-2) is fixedly sleeved on the discharging frame (103c-2).

5. A furan resin sand mixer for casting as claimed in claim 3 or 4, characterized in that: The stirring assembly (102) comprises a stirring plate (102a) and a stirring shaft (102b), the stirring shaft (102b) slidingly passes through each partition (101a), and both ends of the stirring shaft (102b) are rotatably sleeved on the side wall of the mixing box (101) via rolling bearings, one end of the stirring shaft (102b) extends to the outside of the mixing box (101) and is embedded in the output end of the first motor (102b-1), and the first motor (102b-1) is fixedly mounted on the outer side wall of the mixing box (101); A connecting disk (102b-2) is provided in each material storage cavity, and a plurality of connecting disks (102b-2) are fixedly sleeved on the same stirring shaft (102b); a plurality of connecting plates (102a-1) are fixedly provided in a circumferential array on the side wall of the connecting disk (102b-2); a stirring plate (102a) is fixedly provided at the other end of the connecting plate (102a-1); and the inner bottom surface of the matching body of the mixing box (101) and the blocking plate (103d) is arranged in a semicircular shape concentric with the stirring shaft (102b); A plurality of auxiliary stirring plates (102a-2) are fixedly arranged in an array along the long side direction on one side surface of the connecting plate (102a-1), and the auxiliary stirring plates (102a-2) on two adjacent connecting plates (102a-1) are arranged at both ends of the connecting plate (102b-2).

6. A furan resin sand mixer for casting as claimed in claim 5, characterized in that: The conveying assembly (201) comprises an outer protective box (201a) and a conveying belt (201b) arranged inside the outer protective box (201a); conveying rollers (201b-1) are slidably sleeved on the inner sides of both ends of the conveying belt (201b); a rotating rod (201b-2) is fixedly sleeved in the conveying roller (201b-1); both ends of the rotating rod (201b-2) are rotatably sleeved on the outer protective box (201a) via rolling bearings; one end of one of the rotating rods (201b-2) extends to the outside of the outer protective box (201a) and is embedded in the output end of the third motor (201b-3); and the third motor (201b-3) is fixedly arranged on the outer side wall of the outer protective box (201a); The first steering assembly (202) comprises a feed sleeve (202a), a first limit sleeve (202b) and a first toothed disc (202c); a feed frame (202a-1) is fixedly provided on the top surface of the feed sleeve (202a), and a second connecting flange (202a-2) is fixedly provided on the upper outer wall of the feed frame (202a-1); a first connecting flange (103c-3) is fixedly provided on the lower outer wall of the discharging frame (103c-2), and the first connecting flange (103c-3) and the second connecting flange (202a-2) are fixedly provided by bolts; a first connecting flange (103c-3) having a U-shaped vertical cross section is fixedly provided on the outer side of the feed port on the top surface of the outer protective box (201a); A limiting sleeve (202b), a first limiting ring (202a-3) having an L-shaped vertical cross section is fixedly provided on the outer side wall of the lower end of the feed sleeve (202a), and the first limiting ring (202a-3) and the first limiting sleeve (202b) are clearance-matched, a first ring tooth (202b-1) is fixedly sleeved on the outer side wall of the first limiting sleeve (202b), and the first ring tooth (202b-1) is meshed with a first toothed disc (202c), the first toothed disc (202c) is fixedly connected to a first output shaft (202c-2) of a fourth motor (202c-1), and the fourth motor (202c-1) is fixedly connected to the outer side wall of a discharge frame (103c-2); The second steering assembly (203) comprises a discharge sleeve (203a), a second limiting sleeve (203b) and a second toothed disc (203c); the discharge sleeve (203a) is fixedly arranged on the outside of a discharge port (103c-4) on the bottom surface of the upper outer protective box (201a); the second limiting sleeve (203b) is fixedly arranged on the outside of a feed port on the top surface of the lower outer protective box (201a); a second limiting ring (203a-2) is fixedly arranged on the outer side wall of the lower end of the discharge sleeve (203a) in the circumferential direction; and the second limiting sleeve (203b) A limiting ring groove (203b-1) for clearance fit of a second limiting ring (203a-2) is provided on the inner wall, a second ring tooth (203a-1) is fixedly sleeved on the outer side of the discharge sleeve (203a), and the second ring tooth (203a-1) is meshed with a second toothed disc (203c), the second toothed disc (203c) is fixedly connected to a second output shaft (203c-1) of a fifth motor (203c-2), and the fifth motor (203c-2) is fixedly connected to the outer protective box (201a) below.

7. A furan resin sand mixer for casting as claimed in claim 6, characterized in that: The discharge assembly (204) comprises a discharge box (204a) and an extension sleeve (204b) slidably sleeved on the outer side of the lower end of the discharge box (204a); the discharge box (204a) is fixedly arranged on the outer side of a discharge port (103c-4) on the bottom surface of the outer protective box (201a) below; T-shaped columns (204a-1) are symmetrically arranged on both sides of the discharge box (204a); the upper ends of the T-shaped columns (204a-1) are fixedly connected to the outer side wall of the discharge box (204a) via connecting blocks (204a-2); a limiting block (204b-2) is slidably sleeved on the T-shaped column (204a-1); the limiting block (204b-2) is fixedly arranged on the outer side wall of the extension sleeve (204b); and a spring (204a-3) is slidably sleeved on the T-shaped column (204a-1) below the limiting block (204b-2); A pull handle (204b-1) is fixedly provided on an outer side wall of the extension sleeve (204b).

8. A furan resin sand mixer for casting as claimed in claim 7, characterized in that: A support frame (205) is fixedly provided on the bottom surface of the outer protective box (201a) located at the top, and a universal wheel (205a) is fixedly installed on the bottom surface of the support frame (205); An adsorption tube (206) is fixedly connected to the top surface of the outer protective box (201a) above the discharge box (204a).

9. A furan resin sand mixer for casting as claimed in claim 7 or 8, characterized in that: A material spreading mechanism (300) is provided inside the two conveying components (201) and above the conveyor belt (201b). The material spreading mechanism (300) comprises a material spreading plate (301) and a material spreading plate (302). The material spreading plate (302) is provided with first adjustment grooves (302b) in an array along the long side direction, and a plurality of first adjustment grooves (302b) are connected via a second adjustment groove (302b-1). Two sides of the first adjustment groove (302b) are symmetrically provided with A material spreading plate (301), wherein two aligned material spreading plates (301) are fixedly connected via a connecting strip (301b), a plurality of the connecting strips (301b) are fixedly connected via a connecting rod (301a), the connecting strip (301b) is loosely fitted in a first adjustment groove (302b), and the connecting rod (301a) is loosely fitted in a second adjustment groove (302b-1), and the long side of the material spreading plate (301) is arranged parallel to the conveying direction of the conveyor belt (201b); Adjustment bolts (302a) are symmetrically fixed on both sides of the top surface of the material laying plate (302), and the adjustment bolts (302a) are fixed in cooperation with the top plate of the outer protective box (201a), and an inclined surface (302c) is provided on the lower end of the material laying plate (302) close to the feeding port of the outer protective box (201a).

10. A method for using a furan resin sand mixer for casting, characterized in that: The furan resin sand mixer for casting according to any one of claims 6 to 9 is operated according to the following steps; S1: connecting the feeding pipe (103a-1) to the feeding mechanism, and inputting various raw materials into the storage chamber through the feeding mechanism; S2: After the addition of multiple raw materials into a material storage chamber is completed, the material transfer component (103) drives the feed pipe (103a-1) to move to another material storage chamber, and the material addition operation continues; S3: At the same time, the stirring component (102) stirs the various raw materials in the material storage chamber to form a mixed material. When the stirring work is completed, the material transfer component (103) moves to its position, and then opens the blocking plate (103d), and the mixed material in the material storage chamber is discharged into the feeding mechanism (200) through the discharge frame (103c-2); S4: In step S3, after the mixed material is discharged, the material is added in the same manner as steps S1-S2; S5: The mixed material entering the feeding mechanism (200) is finally fed into the mold as the staff adjusts the position of the feeding mechanism (200), thereby achieving the shaping operation of the mixed material.

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