A seal curtain for a shot blasting machine

Abstract

This utility model provides a sealing curtain for a shot blasting machine, comprising a mounting plate, a fixing frame, curtain bodies, and conductive plates. The mounting plate is fixed to the inner wall of the upper end of the workpiece inlet of the shot blasting mechanism, and fixing frames are fixed to the lower sides of both ends of the mounting plate. Several curtain bodies are evenly fixed to the lower sides of the fixing frames, with the height of the curtain bodies being the same as the height of the workpiece inlet of the shot blasting machine. Conductive plates are fixed to the lower ends of each curtain body, with corresponding conductive plates of adjacent curtain bodies on the same fixing frame abutting together. The conductive plates on the two outermost curtain bodies on the same fixing frame are electrically connected to the shot blasting machine control computer via wires. The curtain body design of this utility model provides a strong blocking effect against shot blasting. Furthermore, the conductive plates on the same fixing frame and the shot blasting machine control computer form a circuit, allowing the control computer to detect whether this circuit is closed and determine whether the curtain body effectively seals the shot blasting machine inlet.

Description

Technical Field

[0001] This utility model belongs to the field of sealing door curtain technology, and in particular relates to a sealing door curtain for shot blasting machines. Background Technology

[0002] The sealing curtain used in shot blasting machines is a key protective component installed at the workpiece inlet of the shot blasting machine. Its core function is to ensure that the workpiece can enter and exit the shot blasting machine smoothly, while blocking the high-speed flying shot (i.e., shot) from flying out of the inlet during the shot blasting operation, so as to avoid injury to the operators or pollution of the working environment, and at the same time maintain the stability of the working pressure and environment inside the shot blasting machine.

[0003] Currently, the sealing curtains of existing shot blasting machines are mostly composed of several simple curtains. These curtains are usually made of flexible materials such as rubber and plastic. They are suspended parallel to each other above the feed inlet by a fixed frame. The curtains hang naturally with a certain gap (or only slight contact) between them. The basic shielding and sealing are achieved by relying on the flexibility and hanging state of the curtains themselves.

[0004] However, this existing structure has the following limitations in practical use: First, in the existing technology, due to the lack of effective connection or synergy between the curtains, they cannot form a whole. When shot blasting impacts a curtain at high speed, the impacted curtain will vibrate, swing or deflect violently, while the other curtains remain stationary because they are not directly impacted. This directly leads to the instantaneous increase in the gap between the impacted curtain and the adjacent curtains. The high-speed shot blasting can easily fly out from these enlarged gaps, seriously affecting the sealing effect and operational safety. Secondly, the existing structure cannot detect whether the curtain has formed an effective seal. When the curtain is deformed or displaced due to long-term use, resulting in seal failure, it is difficult for operators to detect in time, which can easily lead to shot blasting leakage.

[0005] Therefore, it is essential to invent a sealed door curtain for shot blasting machines. Utility Model Content

[0006] To address the above problems, this utility model proposes a sealing curtain for shot blasting machines, and the technical solution used is as follows: A sealing curtain for a shot blasting machine includes a mounting plate, a fixing frame, curtain bodies, and a conductive plate. The mounting plate is bolted to the inner wall of the upper end of the workpiece inlet of the shot blasting mechanism. Fixing frames are bolted to the lower sides of both ends of the mounting plate, with the two fixing frames arranged parallel to each other and the distance between them greater than the width of the workpiece to be processed. A plurality of curtain bodies are evenly bolted to the lower sides of the fixing frames, with the height of the curtain bodies being the same as the height of the workpiece inlet of the shot blasting machine. Conductive plates are fixed to the lower ends of each curtain body, with corresponding conductive plates of adjacent curtain bodies on the same fixing frame abutting against each other. The conductive plates on the two outermost curtain bodies on the same fixing frame are electrically connected to the shot blasting machine control computer via wires.

[0007] Furthermore, the curtains fixed on the same frame are arranged in an "S"-shaped array, and the edges of adjacent curtains overlap. This arrangement can improve the sealing degree of the workpiece inlet of the shot blasting machine.

[0008] Furthermore, the curtain includes a rubber strip and a flexible magnet. The rubber strip is fixed to the lower side of the fixing frame by bolts, and flexible magnets are fixed inside both sides of the rubber strip. The length of the flexible magnet is greater than the edge overlap length between adjacent curtains. The flexible magnets are all flexible rubber magnets. With this arrangement, when no workpiece is needed to pass through, the flexible magnets can make the curtains on the same fixing frame form a whole, thereby effectively suppressing the high-frequency vibration and swaying caused by shot blasting impact, and thus maintaining the stability of the sealing gap between the curtains.

[0009] Furthermore, the curtain also includes an inner cavity, which is formed inside the rubber strip. The inner cavity is filled with a non-Newtonian fluid. This arrangement allows the curtain to be easily pushed open when the workpiece slowly pushes it, and when the splashed shot hits the curtain, the curtain can become rigid, effectively absorbing and dispersing the impact energy.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The curtain design of this utility model allows the rubber strip to shield the shot blasting machine from splashing shot. Secondly, when the workpiece slowly pushes the curtain, the non-Newtonian fluid is in a soft state, making the curtain easy to push open. When the workpiece does not need to pass through, the flexible magnets allow the curtains on the same fixed frame to form a whole, which can effectively suppress the high-frequency vibration and swaying caused by shot blasting impact, thereby maintaining the stability of the sealing gap between the curtains. In addition, when the splashed shot hits the curtain, the non-Newtonian fluid at the point of impact becomes extremely hard instantly, effectively absorbing and dispersing the impact energy, preventing shot blasting from penetrating or causing violent shaking, and immediately recovering its softness after impact.

[0011] The conductive plate of this invention enables several conductive sheets on the same fixed frame to form a circuit with the shot blasting machine control computer. The control computer of the shot blasting machine can then detect whether the circuit is closed. If the control computer of the shot blasting machine does not receive a signal indicating that the circuit is closed after the workpiece passes through the curtain, it proves that the curtain cannot form an effective seal. An alarm can then be triggered by the cooperation of the control computer and the buzzer of the shot blasting machine. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the curtain body of this utility model.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the curtain body of this utility model.

[0016] In the picture: 1-Mounting plate, 2-Fixing frame, 3-Curtain body, 31-Rubber strip, 32-Flexible magnet, 33-Inner cavity, 4-Conductive plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0019] Please see Figures 1 to 3As shown, this utility model is a sealing curtain for a shot blasting machine, including a mounting plate 1, a fixing frame 2, curtain bodies 3, and a conductive plate 4. The mounting plate 1 is fixed to the inner wall of the upper end of the workpiece inlet of the shot blasting mechanism by bolts. The fixing frames 2 are fixed to the lower sides of both ends of the mounting plate 1 by bolts. The two fixing frames 2 are arranged parallel to each other, and the distance between the two fixing frames 2 is greater than the width of the workpiece to be processed. Several curtain bodies 3 are evenly fixed to the lower side of the fixing frame 2 by bolts. The height of the curtain bodies 3 is the same as the height of the workpiece inlet of the shot blasting machine. The conductive plates 4 are fixed to the lower ends of the curtain bodies 3. The corresponding conductive plates of adjacent curtain bodies 3 on the same fixing frame 2 are attached together. The conductive plates 4 on the two outermost curtain bodies on the same fixing frame 2 are electrically connected to the control computer of the shot blasting machine by wires.

[0020] Specifically, the curtains 3 fixed on the same fixed frame 2 are arranged in an "S"-shaped array, and the edges of adjacent curtains 3 overlap. By overlapping the edges, the curtains 3 can improve the sealing degree of the workpiece inlet of the shot blasting machine.

[0021] Specifically, the curtain 3 includes a rubber strip 31 and a flexible magnet 32. The rubber strip 31 is fixed to the lower side of the fixing frame 2 by bolts, and flexible magnets 32 are fixed inside both sides of the rubber strip 31. The length of the flexible magnet 32 ​​is greater than the edge overlap length between adjacent curtains 3. The flexible magnets 32 are all made of flexible rubber magnets. With this arrangement, the rubber strip 31 can block the shot splashing inside the shot blasting machine. Secondly, when the workpiece does not need to pass through, the flexible magnets 32 can make the curtains 3 on the same fixing frame 2 form a whole, which can effectively suppress the high-frequency vibration and sway caused by shot blasting impact, thereby maintaining the stability of the sealing gap between the curtains 3.

[0022] Specifically, the curtain 3 also includes an inner cavity 33, which is opened inside the rubber strip 31. The inner cavity 33 is filled with a non-Newtonian fluid. With this arrangement, when the workpiece slowly pushes the curtain 3, the non-Newtonian fluid is in a soft state, and the curtain 3 is easily pushed open. When the splashed shot hits the curtain 3, the non-Newtonian fluid at the point of impact instantly becomes hard, effectively absorbing and dispersing the impact energy, preventing the shot from penetrating or causing violent shaking, and immediately recovering its softness after the impact.

[0023] Specifically, when no workpiece passes through the feed inlet of the shot blasting machine, a circuit will be formed between several conductive plates 4 on the same fixed frame 2 and the shot blasting machine control computer. The shot blasting machine control computer detects whether the circuit is closed, which is existing technology and will not be elaborated here.

[0024] Please see Figure 1-3As shown, this utility model is a sealing curtain for a shot blasting machine. Its working principle is as follows: When in use, the curtain 3 can seal the feed inlet of the shot blasting machine. Several conductive sheets 4 on the same fixed frame 2 form a circuit with the shot blasting machine control computer. The shot blasting machine control computer can determine whether the curtain 3 effectively seals the feed inlet of the shot blasting machine by detecting whether the circuit is closed. If the circuit closure is not detected, an alarm can be triggered by the cooperation of the shot blasting machine control computer and the shot blasting machine buzzer. When a workpiece passes through the feed inlet of the shot blasting machine, the curtain 3 can swing accordingly and reset after the workpiece has completely passed through.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing curtain for a shot blasting machine, comprising a mounting plate (1), a fixing frame (2), a curtain body (3), and a conductive plate (4), characterized in that: The mounting plate (1) is fixed to the inner wall of the upper end of the workpiece inlet of the shot blasting mechanism. The mounting plate (1) has a fixing frame (2) fixed on both lower sides. The two fixing frames (2) are arranged parallel to each other, and the distance between the two fixing frames (2) is greater than the width of the workpiece to be processed. Several curtains (3) are evenly fixed on the lower side of the fixing frame (2). The height of the curtain (3) is the same as the height of the workpiece inlet of the shot blasting machine. The lower ends of the curtain (3) are fixed with conductive plates (4). The corresponding conductive plates of adjacent curtains (3) on the same fixing frame (2) are attached together. The conductive plates (4) on the two outermost curtains on the same fixing frame (2) are electrically connected to the shot blasting machine control computer through wires.

2. A sealing curtain for a shot blasting machine as described in claim 1, characterized in that: The curtains (3) fixed on the same frame (2) are arranged in an "S" shaped array, and the edges of adjacent curtains (3) overlap.

3. A sealing curtain for a shot blasting machine as described in claim 2, characterized in that: The curtain (3) includes a rubber strip (31) and a flexible magnet (32). The rubber strip (31) is fixed to the lower side of the fixing frame (2), and flexible magnets (32) are fixed inside both sides of the rubber strip (31). The length of the flexible magnet (32) is greater than the edge overlap length between adjacent curtains (3).

4. A sealing curtain for a shot blasting machine as described in claim 3, characterized in that: The curtain (3) also includes an inner cavity (33), which is opened inside the rubber strip (31) and is filled with a non-Newtonian fluid.

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