Machine tool sheet metal outer protection device and machine tool

Abstract

This utility model provides a sheet metal external protective device for a machine tool and a machine tool. The sheet metal external protective device includes a surrounding plate, a sealing plate, a guide plate, and a shielding plate. The surrounding plate is disposed above the sealing plate, and the sealing plate is disposed above the guide plate. The surrounding plate includes a first side plate and a first shielding folded edge, the first shielding folded edge extending obliquely inward from the bottom of the first side plate. The sealing plate includes a second side plate and a second shielding folded edge, the second shielding folded edge extending obliquely inward from the bottom of the second side plate. The first shielding folded edge shields a first gap between the top of the sealing plate and the surrounding plate; the second shielding folded edge shields a second gap between the bottom of the sealing plate and the guide plate. The shielding plate is located inside the surrounding plate, and the shielding plate is connected to the surrounding plate and the guide plate to form an isolation cavity. The sheet metal external protective device for a machine tool provided by this utility model can improve the sealing performance of the machine tool.

Description

Technical Field

[0001] This utility model relates to the field of processing equipment technology, and in particular to a machine tool sheet metal external protective device and a machine tool. Background Technology

[0002] Machine tools achieve cutting by contacting the workpiece with a high-speed rotating cutting tool, and coolant continuously washes the part of the cutting tool that contacts the workpiece. As a result, the cutting tool of the machine tool generates chips and used cutting fluid during operation.

[0003] Existing machine tools typically use sheet metal external protective devices to protect against chips and cutting fluid. These devices include a chassis and a sealing plate mounted on the chassis. The chassis has folded edges, and the bottom of the sealing plate also has folded edges. The folded edges on the chassis and the sealing plate are fastened together with bolts. However, there are still gaps between the folded edges on the chassis and the sealing plate. Cutting fluid and fine chips can still escape from inside the machine tool through these gaps to the surface of the sheet metal external protective device (see patent publication number CN111823047A), contaminating both the sheet metal external protective device and the external environment of the machine tool.

[0004] Therefore, improving the sealing performance of the sheet metal external protective device for machine tools is an urgent problem to be solved. Utility Model Content

[0005] This utility model provides a sheet metal external protective device for machine tools, which can improve the sealing performance of machine tools.

[0006] This utility model provides a sheet metal external protective device for machine tools, including a surrounding plate, a sealing plate, and a guide plate. The surrounding plate is disposed above the sealing plate, and the sealing plate is disposed above the guide plate.

[0007] It also includes a baffle plate, the enclosure including a first side plate and a first baffle folded edge, the first baffle folded edge extending obliquely inward from the bottom of the first side plate, the sealing plate including a second side plate and a second baffle folded edge, the second baffle folded edge extending obliquely inward from the bottom of the second side plate, the first baffle folded edge covering the first gap between the top of the sealing plate and the enclosure; the second baffle folded edge covering the second gap between the bottom of the sealing plate and the guide plate; the baffle plate is located inside the enclosure, the baffle plate is connected to the enclosure and the guide plate and forms an isolation cavity.

[0008] In some feasible implementations, the first shielding fold includes a first connecting plate and a first bending plate, wherein the first connecting plate is set at an obtuse angle to the first side plate, and the first bending plate is suspended on the inner side of the first side plate through the first connecting plate;

[0009] A second connecting plate and a second bending plate are provided above the second side plate. The second connecting plate is set at an acute angle to the second side plate. The second bending plate extends out of the inner side of the second side plate through the second connecting plate. The second connecting plate is attached to the first connecting plate, and the second bending plate is attached to the first bending plate.

[0010] In some feasible embodiments, the shielding plate includes a third side plate, a third connecting plate, and a third bending plate. The third connecting plate extends obliquely from above the third side plate toward the second side plate. The third bending plate is formed by extending upward from the third connecting plate. The third bending plate is located between the first bending plate and the second bending plate, or on the side of the first bending plate away from the second bending plate.

[0011] In some feasible implementations, a first fastener is also included, wherein the third bent plate is parallel to and fitted to the first bent plate, the top of the third bent plate is provided with an opening groove, the first bent plate is provided with a mating hole, and the first fastener locks the shielding plate and the enclosure plate through the opening groove and the mating hole.

[0012] In some feasible embodiments, the guide plate includes a base plate and a fourth side plate connected to the base plate. The bottom of the third side plate is provided with a third shielding fold, which is located on the side of the third side plate away from the fourth side plate. The base plate is inclined, and the third shielding fold is fitted to the base plate. The inclination angle of the third shielding fold is adapted to the inclination angle of the base plate.

[0013] In some feasible implementations, the first side plate, the second side plate, and the fourth side plate are vertically aligned; the first bent plate is parallel to the first side plate via a first connecting plate, and the second bent plate is parallel to the second side plate via a second connecting plate.

[0014] In some feasible implementations, at least the second shielding fold is located inside the isolation cavity. The second shielding fold includes a fourth connecting plate and a fourth bending plate arranged at an obtuse angle. The fourth bending plate is suspended on the inner side of the sealing plate through the fourth connecting plate and is inclined toward the guide plate.

[0015] The guide plate also includes a fifth connecting plate and a fifth bending plate. The fifth bending plate extends out of the inner side of the guide plate through the fifth connecting plate. The fifth connecting plate is fitted with the fourth connecting plate, and the fifth bending plate is fitted with the fourth bending plate.

[0016] In some feasible embodiments, the second shielding fold also includes a sixth folding plate, which is connected to the end of the fourth folding plate away from the fourth connecting plate, and the sixth folding plate is arranged parallel to the second side plate through the fourth connecting plate and the fourth folding plate, and the bending direction of the sixth folding plate is closer to the fifth folding plate.

[0017] In some feasible implementations, a second fastener and a connecting seat are also included, the connecting seat being disposed between the sealing plate and the shielding plate, and the number of connecting seats is at least two, the sealing plate and the shielding plate being locked together by the second fastener and the connecting seat;

[0018] The enclosure also includes a fifth side plate connected to the side of the first side plate, and the side of the shielding plate is provided with a fourth shielding fold that fits against the fifth side plate.

[0019] This utility model also provides a machine tool, including a base, a column disposed on the base, a spindle disposed on the column, and the aforementioned machine tool sheet metal external protective device, wherein the machine tool sheet metal external protective device is disposed on the base and surrounds the outer periphery of the spindle.

[0020] The aforementioned machine tool sheet metal external protective device comprises a surrounding plate, a sealing plate, a shielding plate, and a guide plate. The surrounding plate is positioned above the sealing plate, and the sealing plate is positioned above the guide plate. The surrounding plate includes a first side plate and a first shielding folded edge, the first shielding folded edge extending obliquely inward from the bottom of the first side plate. The sealing plate includes a second side plate and a second shielding folded edge, the second shielding folded edge extending obliquely inward from the bottom of the second side plate. The first shielding folded edge shields the first gap between the top of the sealing plate and the surrounding plate; the second shielding folded edge shields the second gap between the bottom of the sealing plate and the guide plate. The shielding plate is located inside the surrounding plate, and the shielding plate is connected to the surrounding plate and the guide plate to form an isolation cavity.

[0021] This creates two layers of protection inside the machine tool. The first layer of protection is the isolation cavity formed by the baffle plate, the surrounding plate, and the guide plate. The second layer of protection consists of two parallel baffle edges, one higher and the other lower. The first and second layers of protection work together to prevent chips and cutting fluid from overflowing from inside the machine tool to the outside. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0023] Figure 1 A partial perspective sectional view of a machine tool sheet metal external protective device provided in an embodiment of this utility model.

[0024] Figure 2 for Figure 1 A schematic diagram of the upper and middle sections.

[0025] Figure 3 for Figure 1 A schematic diagram of the lower half of the structure.

[0026] Component Symbol Explanation

[0027] 100. Enclosure panel; 110. First side panel; 120. First shielding fold; 121. First connecting plate; 122. First bending plate; 130. Fifth side panel; 200. Sealing plate; 210. Second side panel; 220. Second shielding fold; 221. Fourth connecting plate; 222. Fourth bending plate; 223. Sixth bending plate; 230. Second connecting plate; 240. Second bending plate; 250. Connecting seat; 300. Guide plate; 310. Bottom plate; 320. Fourth side panel; 330. Fifth connecting plate; 340. Fifth bending plate; 400. Shielding plate; 410. Third side panel; 411. Third shielding fold; 412. Fourth shielding fold; 420. Third connecting plate; 430. Third bending plate; 431. Opening slot; F1. First gap; F2. Second gap.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] To provide a clearer and more accurate understanding of the present invention, a detailed description will now be provided in conjunction with the accompanying drawings. The accompanying drawings illustrate examples of embodiments of the present invention, wherein the same reference numerals denote the same elements. It is to be understood that the scale shown in the accompanying drawings is not the actual scale of the present invention, but is for illustrative purposes only and is not a drawing based on the original dimensions.

[0033] Machine tools achieve cutting by contacting the workpiece with a high-speed rotating cutting tool, and coolant continuously washes the part of the tool that contacts the workpiece. As a result, the cutting tool generates chips and used cutting fluid during operation. Although the folds and folds on the existing machine tool's flanges and end plates are secured with bolts, gaps still exist. Cutting fluid and fine chips can still escape from inside the machine tool to the surface of the machine tool's sheet metal outer protective device through these gaps.

[0034] To improve the protection of machine tools, please refer to... Figure 1 This utility model provides a machine tool sheet metal external protection device, including a surrounding plate 100, a sealing plate 200, a shielding plate 400 and a guide plate 300.

[0035] Along the plane where the sealing plate 200 is located, the surrounding plate 100, the sealing plate 200, and the guide plate 300 are arranged sequentially from top to bottom. The guide plate 300 is connected to the chip discharge port of the machine tool base, and the two sealing plates 200 are respectively connected to both sides of the machine tool column, thereby forming a closed structure by enclosing the surrounding plate 100, the sealing plate 200, the guide plate 300, and the column. For example, the surrounding plate 100 is frame-shaped, the guide plate 300 is also frame-shaped, and the sealing plate 200 is plate-shaped. The surrounding plate 100 is located above the sealing plate 200, and the sealing plate 200 is located above the guide plate 300. The enclosure 100, the sealing plate 200, and the deflector 300 are all independent structures. Therefore, there is a gap between the bottom of the enclosure 100 and the top of the sealing plate 200, and there is also a gap between the bottom of the sealing plate 200 and the top of the deflector 300. The baffle 400 is used to cover the gap between the bottom of the enclosure 100 and the top of the sealing plate 200, and the gap between the bottom of the sealing plate 200 and the top of the deflector 300.

[0036] To simultaneously block the gaps between the bottom of the enclosure 100 and the top of the sealing plate 200, and between the bottom of the sealing plate 200 and the guide plate 300, the shielding plate 400 is located inside the enclosure 100. The shielding plate 400 is connected to the enclosure 100 and the guide plate 300, forming an isolation cavity. It can be understood that the surface area of ​​the shielding plate 400 is larger than that of the sealing plate 200, thus enabling the shielding plate 400 to simultaneously block the gaps between the bottom of the enclosure 100 and the top of the sealing plate 200, and between the bottom of the sealing plate 200 and the top of the guide plate 300. The shielding plate 400, connected to the enclosure 100 and the guide plate 300, forms an isolation cavity, constituting the first line of protection within the machine tool. The cutting fluid and chips inside the machine tool will first come into contact with the shielding plate 400; that is, the first line of protection provides initial protection.

[0037] The second layer of protection inside the machine tool is described below. This second layer consists of a first shielding fold 120 and a second shielding fold 220, along with corresponding structures. Specifically, the enclosure 100 includes a first side plate 110 and a first shielding fold 120. The first shielding fold 120 extends obliquely inward from below the first side plate 110, meaning the inward side is the direction inside the machine tool, i.e., the machining area where the spindle is located. The first shielding fold 120 blocks the first gap F1 between the top of the sealing plate 200 and the enclosure 100. By blocking the first gap F1 with the first shielding fold 120, when chips and cutting fluid inside the machine tool enter the isolation chamber at a relatively high position, it prevents chips and cutting fluid from escaping directly to the outside of the machine tool through the first gap F1.

[0038] The sealing plate 200 includes a second side plate 210 and a second shielding fold 220. The second shielding fold 220 extends obliquely inward from the lower part of the second side plate 210 and shields the second gap F2 between the bottom of the sealing plate 200 and the guide plate 300. By shielding the second gap F2 with the second shielding fold 220, when the chips and cutting fluid inside the machine tool enter the isolation cavity at a relatively low position, the chips and cutting fluid can be prevented from escaping directly to the outside of the machine tool through the second gap F2, thereby enhancing the protective effect.

[0039] To make the first gap F1 bend, increasing the difficulty for chips and cutting fluid to penetrate the bend and improving the protective effect, the first shielding fold 120 includes a first connecting plate 121 and a first bending plate 122. The first connecting plate 121 is set at an obtuse angle to the first side plate 110, and the first bending plate 122 is suspended on the inner side of the first side plate 110 via the first connecting plate 121. A second connecting plate 230 and a second bending plate 240 are provided above the second side plate 210. The second connecting plate 230... The second bent plate 240 is set at an acute angle to the second side plate 210 and is suspended inside the second side plate 210 by the second connecting plate 230. The second connecting plate 230 is attached to the first connecting plate 121 and the second bent plate 240 is attached to the first bent plate 122. It can be understood that the gap between the second connecting plate 230 and the first connecting plate 121 constitutes the rear half of the first gap F1, and the gap between the second bent plate 240 and the first bent plate 122 constitutes the front half of the first gap F1.

[0040] Please refer to Figure 2To extend the length of the second shielding fold 220 along the machine tool's inward and outward directions and improve its protective effect, the shielding plate 400 is configured with a bent structure, making the cross-sectional area of ​​the bottom of the isolation cavity larger than that of the top. Specifically, the shielding plate 400 includes a third side plate 410, a third connecting plate 420, and a third bent plate 430. The third connecting plate 420 extends obliquely from above the third side plate 410 toward the second side plate 210. The third bent plate 430 is formed by extending upward from the third connecting plate 420. The third bent plate 430 is located between the first bent plate 122 and the second bent plate 240, or on the side of the first bent plate 122 away from the second bent plate 240. When the third bending plate 430 is located between the first bending plate 122 and the second bending plate 240, the third bending plate 430 is hidden between the first bending plate 122 and the second bending plate 240, and the gap between the shielding plate 400 and the surrounding plate 100 is hidden, without adding a new gap structure, thus improving the protective effect. When the third bending plate 430 is located on the side of the first bending plate 122 away from the second bending plate 240, the third bending plate 430 is exposed on the outside of the first bending plate 122, making the connection between the third bending plate 430 and the first bending plate 122 visible, facilitating the assembly of the third bending plate 430 and the first bending plate 122.

[0041] Please refer to Figure 1 To facilitate the pre-installation of the shielding plate 400 and the enclosure plate 100, the machine tool sheet metal external protective device also includes a first fastener. The third bending plate 430 is parallel to and fitted with the first bending plate 122. The top of the third bending plate 430 is provided with an opening groove 431, and the first bending plate 122 is provided with a mating hole. The first fastener locks the shielding plate 400 and the enclosure plate 100 through the opening groove 431 and the mating hole. By providing the opening groove 431, during installation, the first fastener can be pre-installed with the mating hole on the first bending plate 122, but not locked. Then, the shielding plate 400 is tilted close to the enclosure plate 100 so that the opening groove 431 is aligned with the first fastener from bottom to top. Then, the first bending plate 122 and the shielding plate 400 are locked together by the first fastener, which speeds up the assembly of the enclosure plate 100 and the shielding plate 400.

[0042] Please refer to Figure 3To increase the contact area between the bottom of the baffle plate 400 and the guide plate 300, thereby improving the protective effect between the baffle plate 400 and the guide plate 300, the guide plate 300 includes a base plate 310 and a fourth side plate 320 connected to the base plate 310. The bottom of the third side plate 410 is provided with a third shielding fold 411, which is located on the side of the third side plate 410 away from the fourth side plate 320. The base plate 310 is inclined, and the third shielding fold 411 is fitted to the base plate 310, with the inclination angle of the third shielding fold 411 matching the inclination angle of the base plate 310. By providing the third shielding fold 411, the contact area and protective area between the baffle plate 400 and the base plate 310 can be increased, preventing cutting fluid and chips from entering the isolation cavity from the connection between the baffle plate 400 and the guide plate 300, thus improving the protective effect between the baffle plate 400 and the guide plate.

[0043] Please refer to Figure 1 and 2 To increase the contact area between the bottom of the baffle 400 and the surrounding plate 100, thereby improving the protective effect between the baffle 400, the guide plate 300, and the surrounding plate 100, the surrounding plate 100 further includes a fifth side plate 130 connected to the side of the first side plate 110. The side of the baffle 400 is provided with a fourth baffle flange 412 that fits snugly against the fifth side plate 130. It can be understood that in some other embodiments, the guide plate 300 includes a fifth side plate 130 connected to the bottom plate 310. That is, the fifth side plate 130 can belong to either the guide plate 300 or the surrounding plate 100, and can be adjusted according to actual conditions to improve the flexibility of the fifth side plate 130's configuration.

[0044] Please refer to Figure 2 During machining, chips and cutting fluid spread from the center of the machine tool at a relatively high height to the periphery at a lower height. To better block chips and cutting fluid from top to bottom and from the center to the periphery, the first side plate 110, the second side plate 210, and the fourth side plate 320 are vertically aligned. The first bent plate 122 is parallel to the first side plate 110 via the first connecting plate 121, and the second bent plate 240 is parallel to the second side plate 210 via the second connecting plate 230. Thus, the first bent plate 122 and the second bent plate 240 form a protective structure with the gap opening facing downwards or the gap opening being blocked.

[0045] Please refer to Figure 3To make the second gap F2 bend, increasing the difficulty for chips and cutting fluid to break through the bend and improving the protective effect, at least the second shielding fold 220 is located within the isolation cavity. The second shielding fold 220 includes a fourth connecting plate 221 and a fourth bending plate 222 arranged at an obtuse angle. The fourth bending plate 222 is suspended on the inner side of the sealing plate 200 through the fourth connecting plate 221 and is inclined towards the guide plate 300. The guide plate 300 also includes a fifth connecting plate 33. 0 and the fifth bending plate 340, the fifth bending plate 340 is suspended on the inner side of the guide plate 300 through the fifth connecting plate 330, the fifth connecting plate 330 is attached to the fourth connecting plate 221, the fifth bending plate 340 is attached to the fourth bending plate 222, the attachment of the fifth connecting plate 330 and the fourth connecting plate 221 forms the rear half of the second gap F2, and the attachment of the fifth bending plate 340 and the fourth bending plate 222 forms the front half of the second gap F2.

[0046] Because the height of the second gap F2 is lower than the height of the first gap F1, the cutting fluid inside the machine tool will accumulate when the water flow is large. Therefore, additional protection is needed for the second gap F2. Specifically, the second shielding fold 220 also includes a sixth bending plate 223. The sixth bending plate 223 is connected to the end of the fourth bending plate 222 away from the fourth connecting plate 221, and the sixth bending plate 223 is arranged parallel to the second side plate 210 through the fourth connecting plate 221 and the fourth bending plate 222. The bending direction of the sixth bending plate 223 is closer to the fifth bending plate 340. It can be understood that the sixth bending plate 223, the fourth bending plate 222, and the fourth connecting plate 221 enclose an isolation chamber with the opening facing downwards. The second gap F2 is located in the isolation chamber, thereby better concealing the second gap F2 and increasing the difficulty for the cutting fluid to escape to the outside of the machine tool through the second gap F2, resulting in better protection.

[0047] Please refer to Figure 1 and 2 To improve the stability of the connection between the sealing plate 200 and the shielding plate 400, the machine tool sheet metal external protective device further includes a second fastener and a connecting seat 250. The connecting seat 250 is disposed between the sealing plate 200 and the shielding plate 400, and there are at least two connecting seats 250. The sealing plate 200 and the shielding plate 400 are locked together by the second fastener and the connecting seat 250. It can be understood that the connecting seat 250 can be U-shaped. For example, the connecting seat 250 includes a mounting plate and two support legs that are perpendicularly connected to the same side of the mounting plate. The mounting plate fits against the shielding plate 400, and the two support legs are integrally formed with the sealing plate 200, thereby improving the assembly efficiency of the shielding plate 400 and the sealing plate 200.

[0048] The aforementioned machine tool sheet metal external protective device comprises a surrounding plate 100, a sealing plate 200, a baffle plate 400, and a guide plate 300. The surrounding plate 100 is positioned above the sealing plate 200, and the sealing plate 200 is positioned above the guide plate 300. The surrounding plate 100 includes a first side plate 110 and a first baffle flange 120, the first baffle flange 120 extending obliquely inward from below the first side plate 110. The sealing plate 200 includes a second side plate 210 and a second baffle flange 220. The second shielding fold 220 extends obliquely inward from the lower side of the second side plate 210; the first shielding fold 120 shields the first gap F1 between the top of the sealing plate 200 and the surrounding plate 100; the second shielding fold 220 shields the second gap F2 between the bottom of the sealing plate 200 and the guide plate 300; the shielding plate 400 is located inside the surrounding plate 100, and the shielding plate 400 is connected to the surrounding plate 100 and the guide plate 300 to form an isolation cavity.

[0049] This creates two layers of protection inside the machine tool. The first layer of protection is the isolation cavity formed by the baffle plate 400, the enclosure plate 100, and the guide plate 300. The second layer of protection consists of two parallel baffle edges: the higher first baffle edge 120 and the lower second baffle edge 220. The first and second layers of protection work together to prevent chips and cutting fluid from overflowing from inside the machine tool to the outside.

[0050] This utility model also provides a machine tool, including a base, a column disposed on the base, a spindle disposed on the column, and the aforementioned machine tool sheet metal external protective device, wherein the machine tool sheet metal external protective device is disposed on the base and surrounds the outer periphery of the spindle.

[0051] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0052] The above-listed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sheet metal external protective device for a machine tool, comprising a surrounding plate (100), a sealing plate (200), and a guide plate (300), wherein the surrounding plate (100) is disposed above the sealing plate (200), and the sealing plate (200) is disposed above the guide plate (300), characterized in that, It also includes a shielding panel (400), the enclosure panel (100) including a first side panel (110) and a first shielding fold (120), the first shielding fold (120) extending obliquely inward from the bottom of the first side panel (110), the sealing panel (200) including a second side panel (210) and a second shielding fold (220), the second shielding fold (220) extending obliquely inward from the bottom of the second side panel (210), the first shielding fold (120) extending obliquely inward from the bottom of the first side panel (1 ... 0) The shielding plate (220) is located at the first gap (F1) between the top of the sealing plate (200) and the surrounding plate (100); the second shielding fold (220) is located at the second gap (F2) between the bottom of the sealing plate (200) and the guide plate (300); the shielding plate (400) is located inside the surrounding plate (100), and the shielding plate (400) is connected to the surrounding plate (100) and the guide plate (300) to form an isolation cavity.

2. The machine tool sheet metal external protective device as described in claim 1, characterized in that, The first shielding fold (120) includes a first connecting plate (121) and a first bending plate (122). The first connecting plate (121) is set at an obtuse angle with the first side plate (110). The first bending plate (122) is suspended on the inner side of the first side plate (110) through the first connecting plate (121). A second connecting plate (230) and a second bending plate (240) are provided above the second side plate (210). The second connecting plate (230) is set at an acute angle to the second side plate (210). The second bending plate (240) extends through the second connecting plate (230) and extends into the inner side of the second side plate (210). The second connecting plate (230) is fitted with the first connecting plate (121), and the second bending plate (240) is fitted with the first bending plate (122).

3. The machine tool sheet metal external protective device as described in claim 2, characterized in that, The shield (400) includes a third side plate (410), a third connecting plate (420), and a third bending plate (430). The third connecting plate (420) extends obliquely from above the third side plate (410) toward the second side plate (210). The third bending plate (430) is formed by extending the third connecting plate (420) upward. The third bending plate (430) is located between the first bending plate (122) and the second bending plate (240), or on the side of the first bending plate (122) away from the second bending plate (240).

4. The machine tool sheet metal external protective device as described in claim 3, characterized in that, It also includes a first fastener, wherein the third bent plate (430) is parallel to and fitted with the first bent plate (122), the top of the third bent plate (430) is provided with an opening groove (431), and the first bent plate (122) is provided with a mating hole. The first fastener locks the shielding plate (400) and the surrounding plate (100) through the opening groove (431) and the mating hole.

5. The machine tool sheet metal external protective device as described in claim 3, characterized in that, The guide plate (300) includes a base plate (310) and a fourth side plate (320) connected to the base plate (310). The bottom of the third side plate (410) is provided with a third shielding fold (411), which is located on the side of the third side plate (410) away from the fourth side plate (320). The base plate (310) is inclined, and the third shielding fold (411) is fitted to the base plate (310), and the inclination angle of the third shielding fold (411) is adapted to the inclination angle of the base plate (310).

6. The machine tool sheet metal outer shield of claim 5, wherein, The first side plate (110), the second side plate (210) and the fourth side plate (320) are vertically aligned; the first bent plate (122) is parallel to the first side plate (110) through the first connecting plate (121), and the second bent plate (240) is parallel to the second side plate (210) through the second connecting plate (230).

7. The machine tool sheet metal external protective device as described in any one of claims 1-6, characterized in that, At least the second shielding fold (220) is located inside the isolation cavity. The second shielding fold (220) includes a fourth connecting plate (221) and a fourth bending plate (222) arranged at an obtuse angle. The fourth bending plate (222) is suspended on the inner side of the sealing plate (200) through the fourth connecting plate (221) and is inclined toward the guide plate (300). The guide plate (300) further includes a fifth connecting plate (330) and a fifth bending plate (340). The fifth bending plate (340) extends through the fifth connecting plate (330) and is suspended inside the guide plate (300). The fifth connecting plate (330) is fitted with the fourth connecting plate (221), and the fifth bending plate (340) is fitted with the fourth bending plate (222).

8. The machine tool sheet metal outer shield of claim 7, wherein, The second shielding fold (220) also includes a sixth bending plate (223), which is connected to the end of the fourth bending plate (222) away from the fourth connecting plate (221). The sixth bending plate (223) is arranged parallel to the second side plate (210) through the fourth connecting plate (221) and the fourth bending plate (222). The bending direction of the sixth bending plate (223) is closer to the fifth bending plate (340).

9. The machine tool sheet metal outer shield of claim 7, wherein, It also includes a second fastener and a connecting seat (250), the connecting seat (250) being disposed between the sealing plate (200) and the shielding plate (400), the number of the connecting seats (250) being at least two, the sealing plate (200) and the shielding plate (400) being locked together by the second fastener and the connecting seat (250); The enclosure (100) also includes a fifth side plate (130) connected to the side of the first side plate (110), and the side of the shielding plate (400) is provided with a fourth shielding fold (412) that fits against the fifth side plate (130).

10. A machine tool, comprising a base, a column disposed on the base, and a spindle disposed on the column, characterized in that, It also includes the machine tool sheet metal external protective device as described in any one of claims 1-9, wherein the machine tool sheet metal external protective device is disposed on the base and surrounds the outer periphery of the spindle.

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