Molding sand conveyor

Abstract

The utility model relates to the technical field of sand casting, in particular to a molding sand conveyor which is used for solving the problem that iron needs to be removed independently when molding sand is conveyed and comprises a machine frame, a rotating roller which is rotatably arranged on the machine frame through a driving device and a transmission roller which is arranged on the machine frame and matched with the rotating roller. The magnetic strips are arranged on the side, making contact with the rotating roller, of the conveying belt through a clamping device, and a sand removing device used for removing iron sand is further arranged on the rack.

Description

Technical Field

[0001] This utility model relates to the field of sand casting technology, and in particular to a molding sand conveyor. Background Technology

[0002] Molding sand is an indispensable basic material in casting production, and its conveying efficiency directly affects the overall operating quality of the casting production line. In the foundry, molding sand usually needs to be conveyed directionally from the storage location to equipment such as the sand mixer and molding machine. At present, belt conveyors are widely used in the field of molding sand conveying due to their advantages such as simple structure, stable operation and long conveying distance. However, existing molding sand conveyors have the following technical problems in actual use: some molding sand contains ferromagnetic impurities, such as iron pellets and riser debris. After these impurities enter the sand mixing or molding process with the molding sand, they will seriously affect the performance of the molding sand and even damage the molds and processing surfaces of subsequent equipment. The traditional solution is usually to set up magnetic separators or suspended iron removers separately in the conveying line. However, these devices occupy a lot of space and can only remove iron at specific points. They cannot continuously adsorb iron sand throughout the entire conveying process, and the iron removal effect is limited. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a molding sand conveyor.

[0004] To achieve the above objectives, the present invention provides a molding sand conveyor, comprising a frame, a rotating roller rotatably mounted on the frame via a drive device, and a transmission roller mounted on the frame to cooperate with the rotating roller. A conveyor belt is wound around the rotating roller and the transmission roller. The conveyor belt also includes several magnetic strips mounted on the side of the conveyor belt that contacts the rotating roller via a locking device. The frame is also provided with a sand removal device for removing iron sand.

[0005] A further improvement is that the magnetic strip includes: a rubber strip, several permanent magnet blocks spaced apart within the rubber strip, and several deformation grooves on the rubber strip, wherein the deformation grooves are all located where no permanent magnet blocks are provided.

[0006] A further improvement is that the engaging device includes an engaging groove disposed on the conveyor belt, the cross-section of the engaging groove being trapezoidal, and the cross-section of the rubber strip matching the engaging groove.

[0007] A further improvement is that the rubber strip is also provided with an installation groove, the bottom of the installation groove is provided with a first frosted surface, the bottom of the engagement groove is provided with a second frosted surface, the installation groove is provided with a soft rubber strip, one side of the soft rubber strip is pasted to the first frosted surface, and the other side is pasted to the second frosted surface.

[0008] A further improvement is that the rotating roller and the transmission roller are provided with guide grooves corresponding to the rubber strip.

[0009] A further improvement is that the frame is also provided with several idler rollers, each idler roller is provided with an arc-shaped groove for avoiding the magnetic strip, and a magnetic block is also provided on the idler roller within the arc-shaped groove.

[0010] A further improvement is that protective skirts are provided on both sides of the conveyor belt.

[0011] A further improvement is that the sand removal device includes a support frame on the frame, a pressure plate inclinedly arranged on the support frame, and a plastic shovel plate that abuts against the surface of the conveyor belt on the pressure plate.

[0012] A further improvement is that the driving device includes a rotary driving component mounted on a frame, wherein the rotating rod of the rotary driving component is connected to a rotating roller.

[0013] The advantages and beneficial effects of this utility model are as follows:

[0014] With a simple structure and convenient use, this solution integrates conveying and iron removal, improving the purity of molding sand. By detachably setting the magnetic strip inside the conveyor belt through a locking device, the conveyor belt continuously applies magnetic attraction to the molding sand during operation, adsorbing ferromagnetic impurities in the molding sand in real time. Compared with the traditional fixed-point iron removal method, this solution achieves a full-process processing mode of conveying and removing iron simultaneously, without requiring additional space and improving iron removal efficiency. Attached Figure Description

[0015] Figure 1 This is a side sectional view of a molding sand conveyor according to the present invention;

[0016] Figure 2 This is a front sectional view of a molding sand conveyor according to the present invention;

[0017] Figure 3 This utility model relates to a molding sand conveyor. Figure 2 Enlarged diagram of section A in the middle;

[0018] Figure 4 This utility model relates to a molding sand conveyor. Figure 1 Enlarged schematic diagram of section B in the middle;

[0019] Figure 5 This is an enlarged top view of a molding sand conveyor without a pressure plate installed, according to the present invention.

[0020] In the diagram: 1. Frame; 2. Rotating roller; 3. Drive roller; 4. Conveyor belt; 5. Rubber strip; 6. Permanent magnet block; 7. Deformation groove; 8. Engaging groove; 9. Mounting groove; 10. Soft rubber strip; 11. Guide clearance groove; 12. Idler roller; 13. Arc groove; 14. Magnetic guide block; 15. Protective skirt; 16. Support frame; 17. Pressure plate; 18. Plastic shovel plate. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0022] like Figures 1-5 As shown, a molding sand conveyor includes a frame 1, a rotating roller 2 rotatably mounted on the frame 1 via a drive device, and a transmission roller 3 mounted on the frame 1 that cooperates with the rotating roller 2. A conveyor belt 4 is wound around the rotating roller 2 and the transmission roller 3. The conveyor belt 4 also includes several magnetic strips mounted on the side of the conveyor belt 4 that contacts the rotating roller 2 via a locking device. The frame 1 is also equipped with a sand removal device for removing iron sand.

[0023] Furthermore, as an optional implementation, in order to enable the magnetic strip to have sufficient magnetic attraction force and adapt to the working state of repeated bending of the belt, the magnetic strip includes: a rubber strip 5, a number of permanent magnet blocks 6 spaced apart in the rubber strip 5, and a number of deformation grooves 7 on the rubber strip 5, wherein the deformation grooves 7 are all located at the locations where no permanent magnet blocks 6 are provided.

[0024] The conveyor belt 4 is a general-purpose fabric core conveyor belt, typically 8-18mm thick, with 12-18mm being preferred here;

[0025] This application designs the magnetic strip as a structure in which permanent magnet blocks 6 are spaced apart inside a rubber strip 5. The rubber strip 5 provides flexibility and a mounting base, while the permanent magnet blocks 6 generate a magnetic field. The spaced arrangement of the two ensures that the stress of the magnetic strip is dispersed when it is bent. At the same time, deformation grooves 7 are opened in the positions where the permanent magnet blocks 6 are not set, which serve as stress release areas when bending, thus preventing the magnetic strip from cracking or peeling due to excessive rigidity.

[0026] Furthermore, as an optional implementation, in order to achieve reliable engagement between the magnetic strip and the conveyor belt 4, while ensuring ease of disassembly, the engagement device includes: an engagement groove 8 provided on the conveyor belt 4, the cross-section of the engagement groove 8 being trapezoidal, and the cross-section of the rubber strip 5 matching that of the engagement groove 8;

[0027] This application provides a trapezoidal engagement groove 8 on the conveyor belt 4, and designs the cross-section of the rubber strip 5 to match the trapezoidal shape. This matching structure can effectively prevent the magnetic strip from detaching radially during operation, while also allowing for replacement.

[0028] Furthermore, as an optional implementation, in order to further enhance the connection stability between the magnetic strip and the engaging groove 8, and at the same time utilize the elasticity of the soft rubber strip 10 to absorb vibration and adapt to deformation, the rubber strip 5 is also provided with an installation groove 9. The bottom of the installation groove 9 is provided with a first frosted surface, the bottom of the engaging groove 8 is provided with a second frosted surface, the installation groove 9 is provided with a soft rubber strip 10, one side of the soft rubber strip 10 is pasted to the first frosted surface, and the other side is pasted to the second frosted surface.

[0029] This application provides an installation groove 9 on the rubber strip 5, and provides a frosted surface on the bottom of both the installation groove 9 and the engagement groove 8, achieving connection through double-sided adhesion of the soft rubber strip 10. The first and second frosted surfaces increase the adhesive contact area and friction, making the soft rubber strip 10 adhere more firmly; the elasticity of the soft rubber strip 10 itself can play a buffering role during operation, reducing the fretting wear of the magnetic strip.

[0030] Furthermore, as an optional implementation, in order to prevent the conveyor belt 4 from deviating while avoiding the magnetic strip, the rotating roller 2 and the transmission roller 3 are provided with guide avoidance grooves 11 corresponding to the rubber strip 5;

[0031] This application provides guide clearance grooves 11 on the rotating roller 2 and the transmission roller 3, which correspond to the rubber strip 5. The guide clearance grooves 11 provide a space for the magnetic strip to avoid squeezing and damage. On the other hand, they form a guide rail-like cooperation with the magnetic strip. When the belt deviates, the magnetic strip contacts the side wall of the clearance groove to generate a corrective thrust, thereby achieving automatic centering.

[0032] Furthermore, as an optional implementation, in order to both avoid the magnetic strip at the position of the idler roller 12 and enhance the conveying performance by utilizing the magnetic force, the frame 1 is also provided with a number of idler rollers 12, the idler rollers 12 are also provided with arc-shaped grooves 13 for avoiding the magnetic strips, and the idler rollers 12 are also provided with magnetic guide blocks 14 located in the arc-shaped grooves 13.

[0033] The magnetic block 14 is specifically made of electrical pure iron;

[0034] This application provides an arc-shaped groove 13 on the idler roller 12 to accommodate the magnetic strip, preventing rigid contact between the magnetic strip and the idler roller 12. Simultaneously, a magnetic guide block 14 is installed within the arc-shaped groove 13, using a magnetically conductive material to guide the magnetic lines of force of the magnetic strip, enhancing the magnetic attraction between the magnetic strip and the idler roller 12. This magnetic attraction causes the belt to automatically conform to the arc-shaped groove 13 in the carrying section, forming a U-shaped conveying cross-section, improving material carrying capacity and providing an automatic correction effect.

[0035] Furthermore, as an optional implementation, in order to prevent molding sand from spilling from both sides of the belt during the conveying process, especially the lateral overflow caused by gravity when conveying at an incline, the conveyor belt 4 is also provided with protective skirts 15 on both sides.

[0036] This application provides protective skirts 15 on both sides of the conveyor belt 4 to form a physical barrier, ensuring stable material conveying. They can also cooperate with magnetic strips and idler rollers 12 to further improve conveying stability.

[0037] Furthermore, as an optional implementation, in order to receive molding sand falling from a height and simultaneously remove iron sand adsorbed by the magnetic strip, the sand removal device includes: a support frame 16 is also provided on the frame 1, a pressure plate 17 is inclinedly arranged on the support frame 16, and a plastic shovel plate 18 is also provided on the pressure plate 17 to abut against the surface of the conveyor belt 4.

[0038] The support frame 16 is fixed to the frame 1 by screws, and the pressure plate 17 is fixed to the support frame 16 by screws.

[0039] In this application, a support frame 16 is provided on the frame 1, and a pressure plate 17 is inclinedly provided on the support frame 16. A plastic shovel 18 is provided on the pressure plate 17 to abut against the surface of the conveyor belt 4. The pressure plate 17 is used to receive incoming materials and buffer impacts. During the operation of the conveyor belt 4, the plastic shovel 18 scrapes off the iron sand adsorbed on the conveyor belt 4.

[0040] Furthermore, as an optional implementation, in order to provide a stable and reliable power output for the conveyor, the drive device includes: a rotary drive component mounted on the frame 1, wherein the rotating rod of the rotary drive component is connected to the rotating roller 2, and the rotary drive component is a servo motor;

[0041] This application uses a rotary drive component as the driving device, and directly connects the rotating rod of the rotary drive component to the rotating roller 2 to realize the direct transmission of power, resulting in a simple and compact structure.

[0042] Working principle: Molding sand falls from a height onto the pressure plate 17 for buffering and then enters the conveyor belt 4. During belt operation, the permanent magnet block 6 inside the magnetic strip generates a magnetic field, continuously attracting iron sand from the molding sand. The magnetic strip is secured by a dovetail groove and glued with a soft rubber strip 10, ensuring stable operation and easy replacement. When the belt passes the rotating roller 2 and the drive roller 3, the magnetic strip is embedded in the guide clearance groove 11, avoiding compression while automatically correcting its course in cooperation with the groove wall. When passing the idler roller 12, the magnetic strip is accommodated in the arc-shaped groove 13. The magnetic guide block 14 in the arc-shaped groove 13 enhances the magnetic attraction, causing the belt to automatically conform to form a U-shaped cross-section, preventing molding sand from spilling. The deformation groove 7 on the magnetic strip releases stress when the belt bends, protecting the structural integrity. When the magnetic strip attracting iron sand reaches the sand removal device, the plastic shovel 18 scrapes off the iron sand. When a certain amount accumulates, it is manually collected, completing the entire process of conveying and iron removal.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model. While the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand conveyor comprising a frame, a rotating roller rotatably arranged on the frame by a driving device, a driving roller arranged on the frame and matched with the rotating roller, and a conveying belt wound around the rotating roller and the driving roller, characterized in that: Also includes: The frame is also equipped with a sand removal device for removing iron sand, which consists of several magnetic strips installed on the side of the conveyor belt that contact the rotating roller via a locking device. The magnetic strip includes: a rubber strip, a number of permanent magnet blocks spaced apart within the rubber strip, and a number of deformation grooves on the rubber strip, wherein the deformation grooves are all located where no permanent magnet blocks are provided; The engaging device includes an engaging groove disposed on the conveyor belt, the cross-section of the engaging groove being trapezoidal, and the cross-section of the rubber strip matching that of the engaging groove.

2. A sand conveyor as claimed in claim 1, wherein: The rubber strip is also provided with an installation groove, the bottom of the installation groove is provided with a first frosted surface, the bottom of the engagement groove is provided with a second frosted surface, the installation groove is provided with a soft rubber strip, one side of the soft rubber strip is pasted to the first frosted surface, and the other side is pasted to the second frosted surface.

3. A sand conveyor as defined in claim 1 wherein: The rotating roller and the transmission roller are provided with guide grooves corresponding to the rubber strip.

4. A sand conveyor as defined in claim 1 wherein: The frame is also provided with several idler rollers, each idler roller having an arc-shaped groove for avoiding the magnetic strip, and a magnetic block located within the arc-shaped groove on the idler roller.

5. A sand conveyor as defined in claim 1 wherein: The conveyor belt is also equipped with protective skirts on both sides.

6. A sand conveyor as defined in claim 1 wherein: The sand removal device includes: a support frame on the frame, a pressure plate inclinedly arranged on the support frame, and a plastic shovel plate abutting against the surface of the conveyor belt on the pressure plate.

7. A sand conveyor as defined in claim 1 wherein: The driving device includes a rotary drive component mounted on a frame, wherein the rotating rod of the rotary drive component is connected to a rotating roller.

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