Precise numerical control machine tool with protective cover sealing structure

Abstract

The precise numerical control machine tool with the protective cover sealing structure comprises a numerical control machine tool body, a machining platform is movably installed in the numerical control machine tool body, and a machining platform driving assembly protective cover is installed between the two ends of the machining platform and the inner wall of the numerical control machine tool body. The machining platform driving assembly protection cover comprises a platform connecting protection cover, a middle protection cover and a fixed protection cover, and one end of the platform connecting protection cover is fixed to the end of the machining platform. The sealing device has the advantages that the sealing spring generates thrust on the sealing extrusion plate, so that the sealing extrusion plate extrudes the rubber outer sleeve to the inner wall of the sealing clamping groove and the outer surface of the middle protection cover or the fixed protection cover, and the rubber outer sleeve is completely attached to the inner wall of the sealing clamping groove and the outer surface of the middle protection cover or the fixed protection cover; the sealing treatment of the connection gaps between the platform connection protection cover and the middle protection cover and between the middle protection cover and the fixed protection cover is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, and particularly relates to a precision numerical control machine tool with a protective cover sealing structure. Background Technique

[0002] A numerical control machine tool, abbreviated as a CNC machine tool, is an automated machine tool equipped with a program control system. The control system can logically process a program with control codes or other symbolic instructions, decode it, represent it in coded numbers, input it into the numerical control device through an information carrier, and after arithmetic processing, the numerical control device issues various control signals to control the actions of the machine tool, and automatically processes parts according to the shape and size required by the drawing.

[0003] A numerical control machine tool consists of components such as a tool magazine, a control panel, a protective door panel, a tool spindle, a movable machining platform, a machining platform drive assembly, a cooling system, and a metal protective cover above the machining platform drive assembly. Among them, the cooling system is used to cool the tool and workpiece during machining. The coolant sprayed by the cooling system will flow along the surface of the metal protective cover above the machining platform and the machining platform drive assembly, and finally return to the coolant storage position.

[0004] However, in the prior art, a metal protective cover is covered above the drive assembly of the machining platform of the numerical control machine tool. The metal protective covers are slidably connected to each other. The coolant enters the inside of the protective cover along the gap, which may cause the drive assembly of the machining platform to be at risk of rust. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that a metal protective cover is covered above the drive assembly of the machining platform of the numerical control machine tool. The metal protective covers are slidably connected to each other. The coolant enters the inside of the protective cover along the gap, which may cause the drive assembly of the machining platform to be at risk of rust.

[0006] To solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A precision CNC machine tool with a protective cover sealing structure, including the main body of the CNC machine tool. A processing platform is movably installed inside the main body of the CNC machine tool. A protective cover for the processing platform drive assembly is installed between both ends of the processing platform and the inner wall of the main body of the CNC machine tool. The protective cover for the processing platform drive assembly includes a platform connection protective cover, an intermediate protective cover, and a fixed protective cover. One end of the platform connection protective cover is fixed to the end of the processing platform, and one end of the fixed protective cover is fixed to the inner wall of the main body of the CNC machine tool. The intermediate protective cover is located between the platform connection protective cover and the fixed protective cover and is slidably connected to the platform connection protective cover and the fixed protective cover. One end of the intermediate protective cover is slidably inserted into the inside of the platform connection protective cover, and the other end of the intermediate protective cover slidably covers one end of the platform connection protective cover. Sealing grooves are provided on the inner sides of one ends of the platform connection protective cover and the intermediate protective cover, and sealing strips are clamped inside the sealing grooves.

[0008] Preferably, the sealing strip includes a rubber outer sleeve. The outer surface of the rubber outer sleeve fits with the inner wall of the sealing groove and the outer surface of the intermediate protective cover or the fixed protective cover. Two sealing extrusion plates are installed inside the rubber outer sleeve.

[0009] Preferably, the two sealing extrusion plates are adjacent up and down, and a plurality of sealing springs are fixed between the two sealing extrusion plates. The sealing springs exert a thrust on the sealing extrusion plates.

[0010] Preferably, auxiliary sealing sacs are provided on both sides of the sealing spring. A connecting ring is installed between the two auxiliary sealing sacs. Two connecting pipes are fixed to the outer side of the connecting ring, and one end of each connecting pipe is fixed to the auxiliary sealing sac.

[0011] Preferably, the auxiliary sealing sacs, the connecting pipes, and the connecting ring are all hollow inside, and the two auxiliary sealing sacs are communicated through the connecting pipes and the connecting ring. The diameter of the connecting ring is larger than the diameter of the sealing spring.

[0012] Preferably, a plurality of through connecting holes are provided on one side of the rubber outer sleeve, and one end of each connecting hole is communicated with the side wall of one of the auxiliary sealing sacs.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] 1. Inside the rubber outer sleeve, two vertically adjacent sealing and pressing plates are installed. A plurality of sealing springs are fixed between the two sealing and pressing plates, and the sealing springs generate a thrust on the sealing and pressing plates, causing the sealing and pressing plates to press the rubber outer sleeve against the inner wall of the sealing groove and the outer surface of the intermediate protective cover or the fixed protective cover, so that the rubber outer sleeve fits completely with the inner wall of the sealing groove and the outer surface of the intermediate protective cover or the fixed protective cover, realizing the sealing treatment of the connection gaps between the platform connection protective cover and the intermediate protective cover and between the intermediate protective cover and the fixed protective cover;

[0015] 2. If coolant enters the inside of the sealing groove, the coolant flows into the inside of the auxiliary sealing bladder directly communicated with the rubber outer sleeve along the connection hole, filling the inside of this auxiliary sealing bladder. During the filling process of this auxiliary sealing bladder, part of the coolant flows into another auxiliary sealing bladder along the connecting pipe and the connecting ring. After the two auxiliary sealing bladders are filled, the two auxiliary sealing bladders generate a squeezing force on the sealing and pressing plates and the rubber outer sleeve, causing the rubber outer sleeve to be pressed against the inner wall of the sealing groove and the surface of the intermediate protective cover or the fixed protective cover, so that the rubber outer sleeve deforms further and reduces the gap between the rubber outer sleeve and the sealing groove, the intermediate protective cover or the fixed protective cover, ensuring that the coolant cannot enter the inside of the platform connection protective cover, the intermediate protective cover and the fixed protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural sectional view of the protective cover of the processing platform drive assembly of the present utility model;

[0018] Figure 3 is Figure 2 the enlarged structural view of part A in

[0019] Figure 4 is the top view of the connecting ring of the present utility model.

[0020] In the figure: 1, the main body of the numerical control machine tool; 2, the processing platform; 3, the protective cover of the processing platform drive assembly; 31, the platform connection protective cover; 32, the intermediate protective cover; 33, the fixed protective cover; 4, the sealing strip; 41, the rubber outer sleeve; 42, the sealing and pressing plate; 43, the sealing spring; 44, the auxiliary sealing bladder; 45, the connection hole; 46, the connecting pipe; 47, the connecting ring; 5, the sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] As shown in Figure 1 , a processing platform 2 is movably installed inside a CNC machine tool main body 1, and a processing platform drive assembly protection cover 3 is installed between both ends of the processing platform 2 and the inner wall of the CNC machine tool main body 1.

[0023] As a preferred technical solution of this embodiment, as shown in Figure 2 and Figure 3 , the processing platform drive assembly protection cover 3 includes a platform connection protection cover 31, an intermediate protection cover 32, and a fixed protection cover 33. One end of the platform connection protection cover 31 is fixed to the end of the processing platform 2, one end of the fixed protection cover 33 is fixed to the inner wall of the CNC machine tool main body 1, the intermediate protection cover 32 is located between the platform connection protection cover 31 and the fixed protection cover 33 and is slidably connected to the platform connection protection cover 31 and the fixed protection cover 33. One end of the intermediate protection cover 32 is slidably inserted inside the platform connection protection cover 31, and the other end of the intermediate protection cover 32 slidably covers one end of the platform connection protection cover 31. Sealing grooves 5 are provided on the inner sides of one ends of the platform connection protection cover 31 and the intermediate protection cover 32, and sealing strips 4 are clamped inside the sealing grooves 5. The sealing strips 4 are used to seal and fill the gaps between the platform connection protection cover 31 and the intermediate protection cover 32 and between the intermediate protection cover 32 and the fixed protection cover 33, so as to prevent the coolant sprayed during the operation of the CNC machine tool from entering the interiors of the platform connection protection cover 31, the intermediate protection cover 32, and the fixed protection cover 33 along the connection gaps between the platform connection protection cover 31 and the intermediate protection cover 32 and between the intermediate protection cover 32 and the fixed protection cover 33.

[0024] As a preferred technical solution of this embodiment, as shown in Figure 3 , the sealing strip 4 includes a rubber outer sleeve 41. The outer surface of the rubber outer sleeve 41 fits with the inner wall of the sealing groove 5 and the outer surface of the intermediate protection cover 32 or the fixed protection cover 33. Two sealing extrusion plates 42 are installed inside the rubber outer sleeve 41. The two sealing extrusion plates 42 are adjacent up and down, and a plurality of sealing springs 43 are fixed between the two sealing extrusion plates 42. The sealing springs 43 exert a thrust on the sealing extrusion plates 42. By the sealing springs 43 exerting a thrust on the sealing extrusion plates 42 and the rubber outer sleeve 41, the rubber outer sleeve 41 is made to fit completely with the inner wall of the sealing groove 5 and the outer surface of the intermediate protection cover 32 or the fixed protection cover 33, so as to achieve the sealing treatment of the connection gaps between the platform connection protection cover 31 and the intermediate protection cover 32 and between the intermediate protection cover 32 and the fixed protection cover 33.

[0025] In this embodiment, auxiliary sealing capsules 44 are provided on both sides of the sealing spring 43. A connecting ring 47 is installed between the two auxiliary sealing capsules 44. Two connecting pipes 46 are fixed to the outer side of the connecting ring 47. One end of the connecting pipe 46 is fixed to the auxiliary sealing capsule 44. The auxiliary sealing capsules 44, the connecting pipes 46, and the connecting ring 47 are all hollow inside, and the two auxiliary sealing capsules 44 are communicated through the connecting pipes 46 and the connecting ring 47. The diameter dimension of the connecting ring 47 is larger than the diameter dimension of the sealing spring 43.

[0026] A plurality of through connecting holes 45 are provided on one side of the rubber outer sleeve 41. One end of the connecting hole 45 is communicated with the side wall of one of the auxiliary sealing capsules 44. The connecting holes 45 provided on the side surface of the rubber outer sleeve 41 introduce the coolant entering the sealing card slot 5 into the auxiliary sealing capsules 44, so that the two auxiliary sealing capsules 44 are gradually filled. After the two auxiliary sealing capsules 44 are filled, the two auxiliary sealing capsules 44 generate a squeezing force on the sealing extrusion plate 42 and the rubber outer sleeve 41, so that the rubber outer sleeve 41 is squeezed towards the inner wall of the sealing card slot 5 and the surface of the middle protection cover 32 or the fixed protection cover 33, so that the rubber outer sleeve 41 is further deformed and the gap between the rubber outer sleeve 41 and the sealing card slot 5, the middle protection cover 32 or the fixed protection cover 33 is reduced, ensuring that the coolant cannot enter the inside of the platform connection protection cover 31, the middle protection cover 32 and the fixed protection cover 33.

[0027] Working principle: First, snap the sealing strip 4 into the inner side of the sealing groove 5 at the inner ends of the platform connection protection cover 31 and the middle protection cover 32. Then, use the middle protection cover 32 to connect the platform connection protection cover 31 and the fixed protection cover 33. After the platform connection protection cover 31, the middle protection cover 32, and the fixed protection cover 33 are assembled, the sealing spring 43 generates a thrust on the two sealing extrusion plates 42, causing the sealing extrusion plates 42 to extrude the rubber outer sleeve 41 against the inner wall of the sealing groove 5 and the outer surface of the middle protection cover 32 or the fixed protection cover 33, so that the rubber outer sleeve 41 is completely attached to the inner wall of the sealing groove 5 and the outer surface of the middle protection cover 32 or the fixed protection cover 33, realizing the sealing treatment of the connection gaps between the platform connection protection cover 31 and the middle protection cover 32, and between the middle protection cover 32 and the fixed protection cover 33. When the coolant sprayed during the operation of the CNC machine tool falls on the surfaces of the platform connection protection cover 31, the middle protection cover 32, and the fixed protection cover 33 and slides, if the coolant enters the inside of the sealing groove 5, the coolant flows into the auxiliary sealing bladder 44 directly connected to the rubber outer sleeve 41 along the connection hole 45, filling the inside of this auxiliary sealing bladder 44. During the filling process of this auxiliary sealing bladder 44, some of the coolant flows into another auxiliary sealing bladder 44 along the connecting pipe 46 and the connecting ring 47. After the two auxiliary sealing bladders 44 are filled, the two auxiliary sealing bladders 44 generate an extrusion force on the sealing extrusion plates 42 and the rubber outer sleeve 41, causing the rubber outer sleeve 41 to be extruded against the inner wall of the sealing groove 5 and the surface of the middle protection cover 32 or the fixed protection cover 33, so that the rubber outer sleeve 41 further deforms and reduces the gap between the rubber outer sleeve 41 and the sealing groove 5, the middle protection cover 32 or the fixed protection cover 33, ensuring that the coolant cannot enter the inside of the platform connection protection cover 31, the middle protection cover 32, and the fixed protection cover 33.

[0028] The above has described the embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principles and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A precision CNC machine tool provided with a protective cover sealing structure, comprising a CNC machine tool body (1), a processing platform (2) being movably installed inside the CNC machine tool body (1), and a processing platform drive component protective cover (3) being installed between the two ends of the processing platform (2) and the inner wall of the CNC machine tool body (1), characterized in that: The processing platform drive component protective cover (3) comprises a platform connection protective cover (31), an intermediate protective cover (32) and a fixed protective cover (33); one end of the platform connection protective cover (31) is fixed to the end of the processing platform (2); one end of the fixed protective cover (33) is fixed to the inner wall of the CNC machine tool body (1); the intermediate protective cover (32) is located between the platform connection protective cover (31) and the fixed protective cover (33) and is slidably connected to the platform connection protective cover (31) and the fixed protective cover (33); one end of the intermediate protective cover (32) is slidably inserted into the platform connection protective cover (31); the other end of the intermediate protective cover (32) slidably covers one end of the platform connection protective cover (31); one end of the platform connection protective cover (31) and the intermediate protective cover (32) are both provided with a sealing groove (5) on the inner side; a sealing strip (4) is clamped inside the sealing groove (5).

2. A precision CNC machine tool with a protective cover sealing structure according to claim 1, characterized in that: The sealing strip (4) comprises a rubber outer sleeve (41), the outer surface of the rubber outer sleeve (41) being in contact with the inner wall of the sealing groove (5) and the outer surface of the intermediate protective cover (32) or the fixed protective cover (33), and two sealing extrusion plates (42) are installed inside the rubber outer sleeve (41).

3. A precision CNC machine tool with a protective cover sealing structure according to claim 2, characterized in that: The two sealing extrusion plates (42) are adjacent to each other up and down, and a plurality of sealing springs (43) are fixed between the two sealing extrusion plates (42), and the sealing springs (43) apply thrust to the sealing extrusion plates (42).

4. A precision CNC machine tool with a protective cover sealing structure according to claim 3, characterized in that: Auxiliary sealing bags (44) are provided on both sides of the sealing spring (43), a connecting ring (47) is installed between the two auxiliary sealing bags (44), two connecting tubes (46) are fixed on the outside of the connecting ring (47), and one end of the connecting tube (46) is fixed to the auxiliary sealing bag (44).

5. A precision CNC machine tool with a protective cover sealing structure according to claim 4, characterized in that: The auxiliary sealing bag (44), the connecting pipe (46) and the connecting ring (47) are all hollow inside, and the two auxiliary sealing bags (44) are connected through the connecting pipe (46) and the connecting ring (47), and the diameter of the connecting ring (47) is larger than the diameter of the sealing spring (43).

6. A precision CNC machine tool with a protective cover sealing structure according to claim 5, characterized in that: A plurality of penetrating connection holes (45) are provided on one side of the rubber outer sleeve (41), and one end of the connection hole (45) is communicated with a side wall of one of the auxiliary sealing bags (44).

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