Sand crushing device for foundry static pressure molding equipment and foundry static pressure molding equipment

Abstract

This utility model belongs to the field of casting technology, specifically relating to a sand crushing device for a casting static pressure molding equipment and the casting static pressure molding equipment itself. The device includes: a base with several rollers arranged on its inner side for conveying a sand box; a pair of support frames erected opposite each other on the base; a rotating shaft rotatably supported between the pair of support frames; and multiple crushing elements spaced apart along the axial direction of the rotating shaft. The rotation trajectory of the crushing elements is configured to abut against the molding sand conveyed to the back of the sand box below. The crushing elements can automatically crush large sand blocks on the back of the sand box during the sand box conveying process, eliminating the need for manual sand crushing.

Description

Technical Field

[0001] This utility model belongs to the field of casting technology, and in particular relates to a sand crushing device for casting static pressure molding equipment and a casting static pressure molding equipment. Background Technology

[0002] In hydrostatic casting molding production lines, after the molding process is completed, excess and uneven molding sand adheres to the back of the sand box. To meet process requirements, this portion of molding sand must be leveled using a scraper. The common practice in existing technology is to install a scraper above the workstation and a screen below, with the scraped molding sand filtered through the screen and then transported away for recycling by a belt conveyor located in a pit. However, because the molding sand on the back of the sand box is usually in large clumps, the scraper mainly removes large blocks of sand. These large sand blocks are difficult to pass through the screen mesh and easily accumulate and clog the screen surface, causing poor material flow.

[0003] To resolve this blockage issue, workers had to be frequently dispatched during production to break up the large, accumulated sand blocks using hand tools. This manual intervention not only posed safety hazards (the confined space inside the equipment posed a risk of mechanical injury) but also increased the physical strain on the workers.

[0004] Therefore, how to automate the solution to the problem of molding sand clogging the screen is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one sand crushing device for a casting static pressure molding equipment.

[0007] In a first aspect, the present disclosure provides a sand crushing device for a casting static pressure molding equipment, comprising: a base having a plurality of rollers arranged on its inner side for conveying a sand box; A pair of support frames stand upright opposite each other on the base; A pivot is rotatably supported between the pair of support frames; Multiple crushing elements are spaced apart along the axial direction of the rotating shaft, and the outer ends of the crushing elements abut against the molding sand on the back of the sand box.

[0008] In one alternative embodiment, the crushing element is impeller-shaped or comb-shaped.

[0009] In one alternative embodiment, the blades of the crushing element are arranged at an angle relative to the radial direction of the rotating shaft, such that the molding sand on the back of the conveying sand box can push the blades to rotate the crushing element.

[0010] In one optional embodiment, a drive motor is further included, which is connected to the rotating shaft for driving the rotating shaft and the crushing element to rotate actively.

[0011] In one optional implementation, the drive motor is a servo motor or a variable frequency motor, and its control unit is electrically connected to the main control system of the production line to adjust the rotation speed of the crushing element according to the conveying speed of the sand box.

[0012] In a second aspect, the present disclosure also provides a sand crushing device for a casting static pressure molding equipment, including: a conveying mechanism for conveying a sand box along a preset path; A crushing device is installed above the conveying mechanism and upstream of a sand scraping station. When the crushing element of the crushing device is working, it can abut against the molding sand on the back of the sand box to pre-crush the large pieces of molding sand on the back of the sand box.

[0013] In one alternative embodiment, the conveying mechanism includes a base with a plurality of rollers disposed on the inner side of the base for conveying the sand box.

[0014] In one optional embodiment, the crushing device includes: A pair of support frames stand upright opposite each other on the base; A pivot is rotatably supported between the pair of support frames; The crushing elements are spaced apart along the axial direction of the rotating shaft, and the rotation trajectory of the crushing elements is configured to abut against the molding sand conveyed to the back of the sand box below them.

[0015] In one alternative embodiment, the crushing element is impeller-shaped or comb-shaped.

[0016] In one alternative embodiment, the blades of the crushing element are arranged at an angle relative to the radial direction of the rotating shaft, such that the molding sand on the back of the conveying sand box can push the blades to rotate the crushing element.

[0017] On the other hand, this embodiment also provides a casting static pressure molding device, including a sand scraping mechanism; the sand crushing device is arranged upstream of the sand scraping mechanism. The beneficial effect of this utility model is that the sand crushing device of this casting static pressure molding device can automatically complete the crushing of large sand blocks on the back side during the sand box conveying process by setting a rotating crushing element above the base, thus eliminating the manual sand crushing operation.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A perspective view of a sand crushing device for a casting static pressure molding equipment according to an embodiment of this disclosure; Figure 2 This is a perspective view of a second embodiment of a sand crushing device for a casting static pressure molding equipment provided in this disclosure.

[0022] In the picture: 100. Conveying mechanism; 110. Base; 120. Roller; 200. Sand box; 210. Molding sand; 300. Crushing device; 310. Crushing element; 320. Support frame; 330. Rotating shaft; 400. Drive motor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless the context clearly indicates otherwise. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research revealed a drawback of existing technology: the molding sand on the back of the sand box typically clumps large and hard, resulting in the scraper removing mostly large blocks of sand. These large blocks are difficult to pass through the screen mesh, easily accumulating and clogging the screen surface, causing poor material flow. To solve this clogging problem, workers must frequently use manual tools to break up the accumulated large sand blocks during production. This manual intervention not only poses safety hazards (the confined space inside the equipment poses a risk of mechanical injury) but also increases the labor intensity for workers and the company's labor costs.

[0030] Based on the above research, this disclosure provides a sand crushing device for a casting static pressure molding equipment. By setting a sand crushing device in front of the sand scraping station, the molding sand is crushed in advance, making the sand particles relatively loose and preventing them from forming large blocks of sand that clog the screen when scraped off by the scraper.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] See Figure 1This disclosure provides a sand crushing device for a casting static pressure molding equipment, comprising: a base 110 with a plurality of rollers 120 rotatably mounted on its inner side for conveying a sand box 200. Outwardly protruding support plates are provided on both sides of the sand box 200. When the support plates abut against the rollers 120, the bottom of the sand box 200 is in an elevated state, and the sand box 200 moves in the direction of the arrow as the rollers 120 rotate. A pair of support frames 320 are vertically mounted on the base 110, and the support frames 320 are arranged opposite each other. A rotating shaft 330 is rotatably mounted between the support frames 320, and a plurality of crushing elements 310 are mounted on the rotating shaft 330. The crushing elements 310 are spaced apart along the axial direction of the rotating shaft 330. The installation height of the rotating shaft 330 is configured such that when the crushing elements 310 hang naturally or rotate, the outer ends of their blades can penetrate into the protruding portion of the molding sand 210 on the back of the sand box 200, thereby ensuring that the molding sand 210 is effectively crushed when the sand box 200 passes by. When the crushing element 310 rotates, it can crush the large sand blocks on the back of the sand box 200. The crushed molding sand 210 has a relatively loose particle size, which effectively prevents the molding sand 210 from accumulating and clogging on the screen conveying mechanism 100, and ensures smooth material discharge of the recycling system.

[0035] See also Figure 1 In some embodiments, the crushing element 310 is impeller-shaped. The impeller-shaped crushing element 310 includes multiple blades arranged radially in a uniform circumferential pattern. The blades are preferably rectangular or trapezoidal steel plates of a certain thickness, and their outer edges can be designed as straight edges or arcs. When the shaft 330 rotates, the impeller-shaped crushing element 310 uses its blades to impact the molding sand 210 blocks on the back of the sand box 200, using kinetic energy to break up large sand blocks. Optionally, the crushing element 310 can also be comb-shaped. When the comb-shaped crushing element 310 is working, its tooth-shaped protrusions can insert into and pry the interior of the molding sand 210 blocks, using the rotational torque to break up large sand blocks.

[0036] See also Figure 1 In some embodiments, the blades of the crushing element 310 are arranged at an inclined angle relative to the radial direction of the rotating shaft 330, so that the molding sand 210 on the back of the conveying sand box 200 can push the blades, thereby causing the crushing element 310 to rotate. Specifically, when the sand box 200 is driven by the roller 120, along... Figure 1 As the material continues to move forward in the direction indicated by the middle arrow, the raised molding sand block 210 on its back will first come into contact with the blades of the stationary crushing element 310. Because the sand has a constant conveying speed, the crushing element 310 rotates under the push of the sand box 200. This design cleverly converts the linear kinetic energy conveyed by the sand box 200 directly into the mechanical energy of the rotating crushing element 310, eliminating the need for the drive motor 400 and its continuous operation, thus reducing operating costs.

[0037] See Figure 2In some embodiments, the sand crushing device further includes a drive motor 400. The output shaft of the drive motor 400 is connected to the end of the rotating shaft 330, thereby providing stable rotational power to the rotating shaft 330 and the crushing element 310 fixed thereon, driving it to perform active rotational crushing. For large sand blocks with high hardness and severe agglomeration, the active rotation crushing efficiency is higher.

[0038] See also Figure 2 In some embodiments, the drive motor 400 is a servo motor or a variable frequency motor, and its control unit is electrically connected to the main control system of the production line to adjust the rotational speed of the crushing element 310 according to the conveying speed of the sand box 200. When a servo or variable frequency motor is used, the main control system can adjust the motor speed in real time according to the changes in the production line speed, thereby optimizing the crushing effect and energy consumption.

[0039] See Figure 1 Some embodiments also provide a sand crushing device for a casting static pressure molding equipment, including: a conveying mechanism 100 for conveying a sand box 200 along a preset path; and a crushing device 300 disposed above the conveying mechanism 100 and located upstream of a sand scraping station, wherein the crushing element 310 of the crushing device 300 can abut against the molding sand 210 on the back of the sand box 200 during operation, so as to pre-crush the large pieces of molding sand 210 on the back of the sand box 200.

[0040] See also Figure 1 In some embodiments, the conveying mechanism 100 includes a base 110, and a plurality of rollers 120 are arranged on the inner side of the base 110 for conveying the sand box 200. The aforementioned conveying mechanism 100 is a general term for all devices capable of conveying the sand box 200. It can be the roller conveyor mechanism in the preferred embodiments described above, but it can also be any other conveying equipment commonly used in the art. For example, a chain conveyor, a stepper conveyor, or a belt conveyor. Therefore, all devices capable of conveying the sand box 200 along a preset path to the sand scraping station fall within the scope of the conveying mechanism 100 of this utility model.

[0041] See also Figure 1In some embodiments, the crushing device 300 includes: a pair of support frames 320, erected opposite each other on the base 110; a rotating shaft 330, rotatably supported between the pair of support frames 320; and crushing elements 310, spaced apart along the axial direction of the rotating shaft 330, the rotation trajectory of the crushing elements 310 being configured to abut against the molding sand 210 conveyed to the back of the sand box 200 below it. The aforementioned crushing device 300 is a general term for all devices capable of pre-processing and crushing large pieces of molding sand 210. It can be the rotary crusher (whether actively driven or passively driven) in the preferred embodiments described above, but it can also be other forms of crushing mechanisms. For example: vibratory crushing (a high-frequency vibrating vibrating plate or vibrating rod is provided above the sand box 200 to crush the molding sand 210 pieces through vibration); and compaction crushing (a pair of relatively rotating compaction rollers are provided, through which the sand box 200 passes, crushing the protruding molding sand 210 by the compaction rollers). Therefore, all devices located upstream of the sand scraping station, whose crushing element 310 can abut against and pre-treat the molding sand 210 on the back of the sand box 200 during operation, fall within the meaning of the crushing device 300 of this utility model.

[0042] See also Figure 1 In some embodiments, the crushing element 310 is impeller-shaped or comb-shaped.

[0043] Some embodiments also provide a casting hydrostatic molding apparatus, including a sand scraping mechanism; the sand scraping mechanism is provided upstream of the sand crushing device described in the above embodiments.

[0044] In summary, the sand crushing device for this casting static pressure molding equipment, by setting a rotating crushing element 310 above the base 110, can automatically crush large sand blocks on the back side during the sand box 200 conveying process, eliminating the need for manual sand crushing. The crushed molding sand 210 has a relatively loose particle size, effectively preventing the molding sand 210 from accumulating and clogging on the screen conveying mechanism 100, ensuring smooth material discharge from the recycling system.

[0045] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0047] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0048] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0049] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sand crushing device for a casting static pressure molding equipment, characterized in that, include: The base (110) has several rollers (120) on its inner side for conveying the sand box (200). A pair of support frames (320) stand upright opposite each other on the base (110); A pivot (330) is rotatably supported between the pair of support frames (320); Multiple crushing elements (310) are spaced apart along the axial direction of the rotating shaft (330), and the outer end of the crushing element (310) abuts against the molding sand (210) on the back of the sand box (200).

2. The sand crushing device as described in claim 1, characterized in that, The crushing element (310) is impeller-shaped or comb-shaped.

3. The sand crushing device as described in claim 1, characterized in that, The blades of the crushing element (310) are set at an inclined angle relative to the radial direction of the rotating shaft (330), so that the molding sand (210) on the back of the conveying sand box (200) can push the blades and thus rotate the crushing element (310).

4. The sand crushing device as described in claim 1, characterized in that, It also includes a drive motor (400), which is connected to the rotating shaft (330) for driving the rotating shaft (330) and the crushing element (310) to rotate actively.

5. The sand crushing device as described in claim 4, characterized in that, The drive motor (400) is a servo motor or a variable frequency motor, and its control unit is electrically connected to the main control system of the production line to adjust the rotation speed of the crushing element (310) according to the conveying speed of the sand box (200).

6. A sand crushing device for a casting static pressure molding equipment, characterized in that, include: A conveying mechanism (100) is used to convey a sand box (200) along a preset path. The crushing device (300) is located above the conveying mechanism (100) and upstream of a sand scraping station. The crushing element (310) of the crushing device (300) abuts against the molding sand (210) on the back of the sand box (200) during operation to pre-crush the large pieces of molding sand (210) on the back of the sand box (200).

7. The sand crushing device as described in claim 6, characterized in that, The conveying mechanism (100) includes a base (110), and a plurality of rollers (120) are provided on the inner side of the base (110) for conveying the sand box (200).

8. The sand crushing device as described in claim 7, characterized in that, The crushing device (300) includes: A pair of support frames (320) stand upright opposite each other on the base (110); A pivot (330) is rotatably supported between the pair of support frames (320); The crushing elements (310) are spaced apart along the axial direction of the rotating shaft (330), and the rotation trajectory of the crushing elements (310) is configured to abut against the molding sand (210) conveyed to the back of the sand box (200) below them.

9. The sand crushing device as described in claim 8, characterized in that, The crushing element (310) is impeller-shaped or comb-shaped.

10. A casting static pressure molding device, characterized in that, include: Scraping mechanism; as well as, The upstream of the sand scraping mechanism is provided a sand crushing device as described in any one of claims 1-9.

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