A folding protective cover and machine tool

Abstract

The present application provides a cascaded shield and a machine tool. The present application sets an outer armor shield directly connected to the movable end flange with a maximum size, and can completely cover the armor shield pieces of each level on the rear side in the retracted state. Therefore, by coordinating the thickness of the armor shield pieces themselves and gradually reducing the length and width of the armor shield pieces, the present application can ensure that each armor shield piece at the front level can be respectively attached to the outer wall surface of the armor shield piece of the next level during the retraction process, and slide from the front end of the armor shield piece of the next level to be flush with the rear end of the armor shield piece of that level, thereby directly removing debris from the surface of the shield pieces of each level through the retraction and sliding of the shield piece. The present application reduces the number of gaps between the armor shield pieces of each level by increasing the back-to-front width of the armor shield pieces of each level and reducing the overall number of armor shield pieces, thereby reducing the possibility of metal scraps and sewage entering the interior of the machine tool and increasing the durability of the shield.

Description

Technical Field

[0001] The present application relates to the field of machine tool protection devices, and in particular to a cascade type protective cover and a machine tool. Background Art

[0002] Existing armor-style shields feature scales that are evenly arranged in a single or double fold. These scales are numerous, and the gaps between them are numerous. During expansion and contraction, the travel ranges of the scales do not completely overlap. As the scales slide, metal debris generated by machine tool processing can accumulate on the surfaces of the armor scales outside their travel range. If this accumulation is severe, it can enter the machine tool through the gaps between the scales, impacting its operation. Summary of the Invention

[0003] This application addresses the shortcomings of the existing technology and provides a progressively stacked shield and machine tool. By gradually adjusting the length and width of the armor shield pieces, the application enables each armor shield piece at the preceding stage to fit against the outer wall surface of the armor shield piece at the following stage and slide to the rear end of the inner armor shield piece, thereby directly removing debris from the surface of each shield piece to prevent contamination inside the machine tool. This application specifically adopts the following technical solutions.

[0004] First, in order to achieve the above-mentioned purpose, a folded protective cover is proposed, which includes: a movable end flange, which is fixed to the front end of the telescopic part of the machine tool, and an outer armor shield piece is arranged on its outer periphery; a fixed end flange, which is fixed to the rear end of the telescopic part of the machine tool, and an inner armor shield piece is arranged on its outer periphery; a folded protective cover group, which is connected between the movable end flange and the fixed end flange, including an outer armor shield piece, an inner armor shield piece and a plurality of intermediate armor shield pieces arranged therebetween, the length and width of the outer armor shield piece being the largest, the length and width of the inner armor shield piece being the smallest, and the length and width of each intermediate armor shield piece gradually transitioning from the length and width of the inner wall of the outer armor shield piece to the length and width of the outer wall of the inner armor shield piece.

[0005] Optionally, a graduated shield as described above, wherein between two adjacent levels of armor shield pieces, the rear end of the inner wall of the larger first-level armor shield piece slides against the outer wall surface of the smaller first-level armor shield piece, and the armor shield pieces are sealed and connected.

[0006] Optionally, as in any of the above-described folded shields, during the compression process, the travel range of each armor shield piece at the front stage includes the sum of the rear-front widths of each armor shield piece at the rear stage.

[0007] Optionally, a graduated shield as described above, wherein, during the compression process, the rear end of the inner wall of each armor shield piece located at the front stage is fitted onto the outer wall surface of the armor shield piece of the next stage, and the front end of the armor shield piece of the next stage slides until it is flush with the rear end of the armor shield piece of that stage.

[0008] Optionally, in any of the above-described graduated shields, the front-to-back width of the armor shield piece at the front stage is not less than the total width of the armor shield pieces at the rear stage in a compressed state.

[0009] Optionally, in a graduated shield as described above, the rear-front width of the outer armor shield piece does not exceed the minimum width distance of the shield installation position on the machine tool.

[0010] Optionally, a progressive shield as described in any of the above, wherein each level of armor shield pieces respectively includes: a sealing outer plate, which is arranged on the outer periphery of the fixed end flange; a supporting inner plate, which is perpendicular to the sealing outer plate and arranged on the inner side thereof, and at least one layer of supporting inner plate is provided in each level of armor shield piece, and the number of supporting inner plates provided in each level of armor shield piece gradually decreases from the outer layer of armor shield piece to the rear; an inner lining, which is connected between each layer of supporting inner plates in each level of armor shield piece, and the inner lining is provided with folds, which are synchronously expanded as the armor shield pieces at each level are stretched, and synchronously folded as the armor shield pieces at each level are compressed.

[0011] Optionally, a progressive shield as described in any of the above, wherein, in each level of armor shield pieces: a sealing outer plate is provided with three sides, which surround the outer periphery of the fixed end flange to form a C-shaped sealing outer cover; the supporting inner plate is a door-shaped supporting plate that is matched with the C-shaped sealing outer cover and is arranged along its inner periphery; the inner lining completely covers the outer periphery of the entire supporting inner plate and the inner wall of the C-shaped sealing outer cover.

[0012] Optionally, in any of the above-described graduated shields, a pulley is further provided on the inner side of the supporting inner plate.

[0013] At the same time, in order to achieve the above-mentioned purpose, the present application also provides a machine tool, which includes any of the folding shields described above.

[0014] Beneficial effects

[0015] The present application sets an outer armor shield directly connected to the movable end flange with a maximum size, which can completely cover the rear armor shield pieces at all levels in the retracted state. Therefore, by coordinating the thickness of the armor shield piece itself and gradually reducing the length and width of the armor shield piece, the present application can ensure that each armor shield piece at the front level can be respectively attached to the outer wall surface of the armor shield piece at the next level during the retraction process, and slide from the front end of the armor shield piece at the next level to be flush with the rear end of the armor shield piece at that level. Since the travel range of each armor shield piece at the front level covers the entire surface of the armor shield piece at the next level, the present application can directly remove surface debris at all levels through the retraction and sliding of the shield piece.

[0016] This application increases the front-back width of each level of armor shield pieces, reduces the overall number of armor shield pieces, and reduces the number of gaps between each level of armor shield pieces, which can further reduce the possibility of metal waste and sewage entering the interior of the machine tool during machine tool processing and increase the durability of the shield.

[0017] The rear ends of all armor shield segments in the folded shield provided by this application are flush. As a result, when the shield is compressed, debris accumulated on the surfaces of each armor shield segment is completely scraped away by friction between the inner and outer walls of the shield. The folded structure provided by this application effectively improves the shield's drainage capacity, preventing debris from accumulating at the extremes of the scale's rear travel range. This further reduces the possibility of metal debris and wastewater entering the machine tool.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will be obvious from the description, or may be learned by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram comparing the structures of the folding shield of the present application and the existing armor-type shield;

[0021] Figure 2 It is a schematic diagram of the folding shield of the present application in a stretched state of the existing armor-type shield;

[0022] Figure 3 is a schematic diagram of the present application's graduated shield in a compressed state relative to a conventional armor-type shield;

[0023] Figure 4 is a cross-sectional view of the internal structure of the graduated shield of the present application;

[0024] Figure 5It is a schematic diagram of the matching relationship between the internal pulley and the guide rail of the folding shield of the present application.

[0025] In the figure, 1 represents a movable end flange; 1' represents a movable end flange in an existing armor-type shield; 2 represents a fixed end flange; 2' represents a fixed end flange in an existing armor-type shield; 11 represents a supporting inner plate; 12 represents an inner lining; 13 represents a pulley; and 3 represents a guide rail. DETAILED DESCRIPTION

[0026] To make the purpose and technical solutions of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without the need for creative work are within the scope of protection of this application.

[0027] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as such herein, will not be interpreted in an idealized or overly formal sense.

[0028] The meaning of "and / or" in this application means that both situations where each exists alone or both exist at the same time are included.

[0029] The meaning of "inside" and "outside" mentioned in this application refers to the direction relative to the progressive shield itself, where the outer surface of the armor shield plate points to the middle of its internal supporting inner plate as the inside, and vice versa as the outside; it is not a specific limitation on the device mechanism of this application.

[0030] The meaning of "left and right" in this application refers to that when the user is facing the rear end of the telescopic direction of the folding shield, the user's left is the left and the user's right is the right, rather than a specific limitation on the device mechanism of this application.

[0031] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0032] The meaning of "back and front" mentioned in this application refers to that when the user is facing the rear end of the telescopic direction of the folding shield, the direction from the movable end to the fixed end is back, and vice versa is front, rather than a specific limitation on the device mechanism of this application.

[0033] Figure 1A graduated shield according to the present application comprises:

[0034] The movable end flange 1 is fixedly connected to the movable end of the telescopic structure of the machine tool, and is fixed to the front end of the telescopic component in the extension direction along the telescopic direction of the machine tool telescopic component. The outer periphery of the movable end flange 1 is provided with an outer layer of armor shield sheet;

[0035] A fixed end flange 2 is fixedly connected to the fixed end of the telescopic structure of the machine tool, and is fixed to the rear end of the telescopic component in the extension direction of the telescopic component of the machine tool along the extension direction of the telescopic component of the machine tool. The outer periphery of the fixed end flange 2 is provided with an inner layer of armor shield sheet;

[0036] The folded shield group is connected between the movable end flange 1 and the fixed end flange 2, and includes an outer armor shield piece, an inner armor shield piece and a plurality of intermediate armor shield pieces arranged therebetween. The length and width of the outer armor shield piece are the largest, and the length and width of the inner armor shield piece are the smallest. The length and width of each intermediate armor shield piece gradually transition from the length and width of the inner wall of the outer armor shield piece to the length and width of the outer wall of the inner armor shield piece.

[0037] Alternatively, in other implementations, the larger outer armor shield piece and the smaller inner armor shield piece can be swapped, with the larger shield piece installed in the fixed end direction and the smaller shield piece installed in the movable end direction, and the sizes of the intermediate armor shield pieces also transition step by step according to the sizes of the shield pieces at the two ends. This setting method does not affect the matching relationship between the armor shield pieces of the present application, so it can also achieve the same Figure 1 Same chip protection as the graduated guard shown.

[0038] Regardless of the configuration, the present invention provides for a wider width of some armor-like shield sheets along the front-to-back telescopic direction, enabling them to cover the multiple folds of the original armor-like telescopic shield lining. This adjusts the shield structure from one scale per fold to one where one scale at one end covers multiple folds in the lining, while the other scale still covers one fold in the lining. This ensures telescopic adjustment accuracy. Therefore, the wider shield scale structure of the present invention allows for a greater travel range to cover a greater telescopic distance, thereby reducing the number of shield sheets and, in turn, the number of gaps between the shield sheets, thereby reducing the possibility of machining waste and waste fluids entering the machine tool.

[0039] In the specific setting, no matter which end of the armor-type shield pieces is arranged in a larger width or more closely, the present application can set the adjacent two levels of armor shield pieces at any position in the stacked shield as follows: the larger level armor shield piece is tightly fitted to the outer wall surface of the smaller level armor shield piece through the inner wall of its end, so that the larger level armor shield piece can slide tightly against the outer wall surface of the smaller level armor shield piece during the expansion and contraction process, and utilize the relative sliding of the shield piece itself during the expansion and contraction process, and the mutual friction between the shield pieces to form a sealed connection between the armor shield pieces, and further utilize the mutual friction and sliding of the inner and outer walls between the shield pieces to scrape off the processing waste scattered on the outer surface of the smaller scales, thereby realizing automatic chip removal.

[0040] In order to ensure the chip removal effect on the outer wall surface of the smaller size shield piece, the present application can be further Figure 3 The method is to set the larger armor shield pieces arranged at the front stage to have a stroke range that includes the sum of the back-to-front widths of the armor shield pieces at the rear stage of the shield piece. As a result, during the contraction process, the second-stage armor shield piece at the front end of the fixed end flange 2 completely covers the upper surface of the fixed end flange 2 backward. Since its stroke range completely covers the front-to-back width of the fixed end flange 2, the second-stage armor shield piece completes the scraping of the entire upper surface of the fixed end flange 2 during the contraction process, and removes the debris attached to the entire outer wall of the fixed end flange 2. The second-stage armor shield piece itself is completely covered backward by the third-stage armor shield piece at its front end. Since the stroke range of the third-stage armor shield piece completely covers the front-to-back width of the second-stage armor shield piece, the third-stage armor shield piece completes the scraping of the entire upper surface of the second-stage armor shield piece during the contraction process, and removes the debris attached to the entire outer wall of the second-stage armor shield piece. It progresses step by step until the penultimate armor shield piece itself is completely covered by the outer armor shield piece at its front end backwards. Since the travel range of the outer armor shield piece completely covers the front and rear width of the penultimate armor shield piece, the outer armor shield piece completes the scraping of the entire upper surface of the penultimate armor shield piece during the contraction process, and removes the debris attached to the entire outer wall of the penultimate armor shield piece.

[0041] During the above-mentioned shrinkage and scratching process, the rear end of the inner wall of each armor shield piece located at the front stage is fitted to the outer wall surface of the armor shield piece of the next stage, and the front end of the next stage armor shield piece slides until it is flush with the rear end of the next stage armor shield piece, and the next stage armor shield piece is completely shrunk to the inside of the armor shield piece located at the front stage, and in the process of gradually covering the next stage armor shield piece, the scratches on the outer surface of the inner armor shield piece are removed.

[0042] To achieve Figure 3As shown on the right, the outer armor shield sheet completely covers the rest of the armor shield sheet structure to compress the overall width of the folded shield in the contracted state as much as possible. The present application can further set the armor shield sheet at the front stage, and its rear front width is not less than the total width of the armor shield sheets in the compressed state of the subsequent stages. Under this setting method, in order to ensure that the folded shield can be smoothly installed on the periphery of the machine tool telescopic structure, the present application can further limit the rear front width of the outer armor shield sheet to not exceed the minimum width distance of the shield installation position on the machine tool, and design the armor shield sheets of each level of the inner layer according to the size of the outer armor shield sheet, the precision requirements of the machine tool telescopic, and the telescopic length requirements.

[0043] During installation, the specific lengths of the inner armor shields must be aligned with the dimensions of the machine tool's telescopic components to ensure effective coverage. The thickness of each armor shield can be adjusted to match the thickness of the sheet metal. Typically, the outer armor shield is 1mm thicker than the inner armor shield. This interference fit between the armor shields further reduces gaps between the layers, improving chip removal.

[0044] In specific implementation, the armor shield sheets at each level used in this application can adopt a structure similar to the existing shield scale sheet, which is configured to include:

[0045] The sealing outer plate is arranged on the outer periphery of the fixed end flange 2, covers the telescopic parts of the machine tool, and provides a sealing surface;

[0046] The supporting inner plate 11 is perpendicular to the sealing outer plate and is arranged on the inner side of the sealing outer plate. Each level of armor shield is provided with at least one layer of supporting inner plate to provide support and guidance for the inner lining. From the outer armor shield to the rear, the front-to-back width of each level of armor shield gradually decreases, and the number of supporting inner plates provided therein also gradually decreases accordingly.

[0047] The inner lining 12 is provided with folds at the position of the supporting inner plate, and is connected to each layer of the supporting inner plate in each level of armor shield through the folds. The folds are synchronously expanded as the armor shield sheets at each level are stretched, and are synchronously folded as the armor shield sheets at each level are compressed.

[0048] For armor-type shields with a larger width, the internal support plate can be set as Figure 4 as well as Figure 2The structure shown in the upper right corner is as follows: One of the supporting inner panels is secured by an inwardly folded edge structure at the end of the sealed outer panel, while several supporting inner panels between the inner panel and the supporting inner panel secured by the folded edge of the adjacent shield panel are suspended in the air. This allows the supporting inner panels in the middle of the shield panel to be directly connected in series via the lining's pleated structure. The supporting inner panels, suspended from the lining, are typically made of PVC, resulting in a relatively light weight. The lining structure generally requires special treatment, such as a waterproof coating, to ensure sufficient support strength at its pleats. Consequently, the suspended inner panels and lining do not affect the movement of the shield.

[0049] In accordance with the protection requirements of the machine tool, the present application can also configure the armor shield sheets of each level in the cascade shield to include:

[0050] 3-sided sealing outer plates are provided, which surround the outer periphery of the fixed end flange 2, are connected to each other and surround the fixed end flange 2 to form a C-shaped sealing outer cover;

[0051] The supporting inner plate 11 is a door-shaped supporting plate provided along the inner periphery of the C-shaped sealing outer cover. The supporting inner plates provided in the middle of the wider sealing outer plate can also be provided as a door-shaped structure to provide support and linkage for the inner lining.

[0052] The inner lining 12 is folded into a C-shaped cylindrical structure, which is connected to each supporting inner plate through its inner periphery, and completely covers the outer periphery of the entire supporting inner plate and the inner wall of the C-shaped sealing outer cover through the supporting inner plate, providing protection for the internal telescopic parts of the machine tool and the external shield structure.

[0053] Considering that the door-shaped supporting inner plate 11 has a large structure weight and the sliding direction of the inner lining is not easy to keep consistent after being folded in two directions, the present application can further Figure 4 In the manner of further setting a plurality of pulleys 13 at the inner corner position, the pulleys are slidably matched with the inner guide rail 3 of the folding shield to provide support and guidance for the inner lining and the supporting inner plate. The guide rail structure matched with the pulleys 13 can be directly installed on the machine tool. Figure 5 The guide rails 3 provided on the machine tool provide guidance during the telescopic cover extension and retraction process. The pulleys can be randomly positioned on several supporting inner plates, or they can be periodically positioned at the corners of several supporting inner plates within the telescopic cover. The specific placement method can be determined based on the size of the compression space.

[0054] In summary, relative to Figure 2The existing armor shield scales on the left side only cover one fold of the shield's inner lining. This application designs an outer armor-like shield scale structure with each layer becoming wider in the forward and backward directions. This allows the outer shield to cover an increasing number of folds. This application effectively reduces the number of shield sheets, thereby reducing the gaps between the scales. By reducing the number of internal structures within the scales, the weight of the overall graduated shield is also reduced.

[0055] This invention, based on a conventional armor-style shield, gradually increases the width of each shield scale at each level, extending the travel range covered by each shield scale. This facilitates the removal of debris deposited on the shield surface through friction between the shield scales, improving the shield's drainage capacity. This invention can better protect the interior of the machine tool, reduce the possibility of waste chips from the machine tool processing area entering the machine tool, and extend the service life of the shield.

[0056] The above is merely an embodiment of the present application, and its description is relatively specific and detailed, but it should not be construed as limiting the scope of the present application. It should be noted that a person skilled in the art may make a number of variations and improvements without departing from the scope of the present application, and these variations and improvements are all within the scope of protection of the present application.

Claims

1. A graduated shield, characterized in that: include: A movable end flange (1) is fixed to the front end of the telescopic component of the machine tool, and an outer layer of armor shield is provided on its periphery; A fixed end flange (2) is fixed to the rear end of the telescopic component of the machine tool, and an inner layer armor shield piece is provided on the outer periphery of the fixed end flange; A progressive shield assembly is connected between a movable end flange (1) and a fixed end flange (2), and comprises an outer armor shield piece, an inner armor shield piece, and a plurality of intermediate armor shield pieces arranged therebetween, wherein the outer armor shield piece has the largest length and width, the inner armor shield piece has the smallest length and width, and the length and width of each intermediate armor shield piece gradually transitions from the length and width of the piece that fits the inner wall of the outer armor shield piece to the length and width of the piece that fits the outer wall of the inner armor shield piece; Among them, between two adjacent levels of armor shield pieces, the rear end of the inner wall of the larger level armor shield piece slides against the outer wall surface of the smaller level armor shield piece, and the armor shield pieces are sealed and connected; During the compression process, the travel range of each armor shield piece at the front stage includes the sum of the back-to-front widths of each armor shield piece at the back stage. The rear end of its inner wall is in contact with the outer wall surface of the armor shield piece at the back stage, and the front end of the armor shield piece at the back stage slides until it is flush with the rear end of the armor shield piece at that stage. The back-to-front width of each armor shield piece at the front stage is not less than the total width of each armor shield piece at the back stage in the compressed state. Furthermore, the rear-front width of the outer armor shield piece does not exceed the minimum width distance of the shield installation position on the machine tool.

2. The graduated shield according to claim 1, wherein: Each level of armor shield plate comprises: a sealing outer plate, which is arranged on the outer periphery of the fixed end flange (2); A supporting inner plate (11) is perpendicular to the sealing outer plate and is arranged on the inner side thereof. At least one layer of supporting inner plate is arranged in each level of armor shield sheet, and the number of supporting inner plates arranged in each level of armor shield sheet gradually decreases from the outer layer of armor shield sheet to the rear. The inner lining (12) is connected between each layer of supporting inner plates in each level of armor shield sheet. The inner lining is provided with folds, which are synchronously unfolded as the armor shield sheets at each level are stretched, and synchronously folded as the armor shield sheets at each level are compressed.

3. The graduated shield according to claim 2, wherein: In each level of armor shield: a sealing outer plate is provided with three sides, which surround the outer periphery of the fixed end flange (2) to form a C-shaped sealing outer cover; The supporting inner plate (11) is a door-shaped supporting plate that matches the C-shaped sealing outer cover and is arranged along its inner periphery; the inner lining (12) completely covers the outer periphery of the entire supporting inner plate and the inner wall of the C-shaped sealing outer cover.

4. The graduated shield according to claim 3, wherein: A pulley (13) is also provided on the inner side of the supporting inner plate (11).

5. A machine tool, characterized in that: It comprises the foldable shield as described in any one of claims 1-4.

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