CN113404864A

CN113404864A - Sealing strip protection structure and sealing protection device thereof

Info

Publication number: CN113404864A
Application number: CN202110957339.0A
Authority: CN
Inventors: 吴行飞; 吕桂芳; 邓崛华; 唐笙富; 宋援朝; 曹光有; 许宇亮; 吴道涵
Original assignee: Beijing Prosper Precision Machine Tool Co ltd
Current assignee: Beijing Prosper Precision Machine Tool Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-09-17
Anticipated expiration: 2041-08-20
Also published as: CN113404864B

Abstract

The invention discloses a sealing strip protection structure and a sealing protection device thereof, wherein the sealing strip protection structure comprises a U-shaped guide frame and sealing strips arranged in the U-shaped guide frame in parallel, the sealing strips comprise square structures and V-shaped structures connected to the square structures, the adjacent V-shaped structures are not contacted, a buffer transition space is formed between support arms of the adjacent V-shaped structures, the V-shaped structures extend out of the opening outer side of the U-shaped guide frame, and the square structures are positioned on the inner side of the U-shaped guide frame and are abutted against an automatic adjusting mechanism; according to the invention, the sealing strips with the V-shaped structures are arranged in parallel, and the buffer transition space is arranged between the two sealing strips, so that multilayer protection can be realized, and even if water vapor or impurities pass through the first layer of sealing strip, the water vapor or the impurities can enter the buffer transition space between the two sealing strips for dissolution, thereby further improving the sealing effect.

Description

Sealing strip protection structure and sealing protection device thereof

Technical Field

The invention relates to the technical field of grinding center sealing protection, in particular to a sealing strip protection structure and a sealing protection device thereof.

Background

The powerful grinding center can realize the processes of drilling, milling, powerful forming and grinding and the like by one-time clamping, and is a multi-process professional machine tool integrating drilling, milling and grinding. Because there is the water spray cooling process in the course of working, its components and parts of moving the workstation lower part need carry out waterproof sealing treatment.

The traditional sealing protection device adopts a plurality of sections of steel plate shields, the upper layer between each section is sealed by a sealing strip, the compression ratio is about 1:5, the occupied length and height space are large, the lower part can not be sealed, water mist can easily enter the bearing lead screw guide rail to form water drops under the working condition of full-sealing high-pressure flushing, so that the service life of internal parts (bearings, lead screws and guide rails) is influenced, the bearing lead screw guide rail is easy to rust, or trace dust enters the bearing lead screw guide rail to greatly reduce the service life of precision parts, and particularly, the influence on a high-precision linear grating ruler is more serious.

The general multi-section flame-retardant organ cover with the stainless steel armor has a compression ratio of about 1:9, occupies a small space, can realize high-speed movement, has the defect that the lower part cannot be completely sealed, and is easy to enter water mist in the working condition of full-sealing high-pressure flushing, so that the service life of internal parts is influenced, particularly a high-precision linear grating ruler. In addition, a certain part of the structure is damaged and completely replaced, so that the maintenance cost is high, the aging is easy, and the service life is short.

Chinese patent No. CN 210118452U discloses an automatic compensation sealing structure, which includes a wear-resistant sealing strip, a metal supporting spring piece is disposed on the reverse side surface of the wear-resistant sealing strip, and the metal supporting spring piece is intermittently elastically supported along the length direction of the wear-resistant sealing strip, so that the wear-resistant sealing strip is tightly abutted on the sealing surface.

Chinese patent No. CN 2627287Y discloses a V-shaped vacuum sealing ring, the cross section of which is V-shaped, the vacuum sealing ring is used to be clamped between two end faces of an evaporator component to be sealed, two side bars of the sealing ring are tightly attached to the sealed end faces by means of the pressure difference between the inside and the outside of a container of the evaporator, and are further sealed by using the external pressure.

Disclosure of Invention

The invention aims to provide a sealing strip protection structure and a sealing protection device thereof, which are used for solving the problems in the prior art, multi-layer protection can be realized by arranging sealing strips with V-shaped structures in parallel and arranging a buffer transition space between the two sealing strips, and even if water vapor or impurities pass through the first layer of sealing strip, the water vapor or the impurities can enter the buffer transition space between the two sealing strips to be dissolved, so that the sealing effect can be further improved.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a sealing strip protection structure which comprises a U-shaped guide frame and sealing strips arranged in the U-shaped guide frame in parallel, wherein each sealing strip comprises a square structure and a V-shaped structure connected to the square structure, the adjacent V-shaped structures are not in contact, a buffer transition space is formed between the support arms of the adjacent V-shaped structures, the V-shaped structures extend out of the opening of the U-shaped guide frame, and the square structures are located on the inner side of the U-shaped guide frame and abut against an automatic adjusting mechanism.

Preferably, a rigid partition plate is arranged between the sealing strips which are arranged in parallel, and the rigid partition plate abuts against the automatic adjusting mechanism.

Preferably, the height of the rigid partition plate does not exceed the height of the square-shaped structures, and the rigid partition plate is not arranged between the V-shaped structures.

Preferably, the automatic regulating mechanism comprises a supporting plate abutted to the sealing strip and the rigid partition plate and a bolt penetrating through and in threaded connection with the bottom surface of the U-shaped guide frame, a spring is sleeved on the bolt, one end of the spring is abutted to the supporting plate, and the other end of the spring is abutted to the inner bottom surface of the U-shaped guide frame.

Preferably, the outer bottom surface of the U-shaped guide frame is connected with a nut, and the bolt is in threaded connection with the nut.

The invention further provides a sealing protection device which comprises the sealing strip protection structure, wherein the sealing strip protection structure is in a strip shape and is enclosed into a quadrilateral structure, and the quadrilateral structure is used for sealing and protecting components enclosed by the sealing strip protection structure.

Preferably, two adjacent sealing strip protection structures form a 45-degree oblique angle connection to form a top angle of the quadrilateral structure.

Preferably, the V-shaped structure abuts against a bottom plane of the reciprocating moving table, the U-shaped guide frame is connected with an L-shaped fixing frame, and the other support arm of the L-shaped fixing frame faces outward, extends toward the fixed table, and is fixed to the fixed table.

Preferably, a side guard flap is included, which is disposed outside the quadrilateral structure.

Preferably, the bottom surface of the side guard fence extends to the lower part of the U-shaped guide frame in an inclined shape.

Compared with the prior art, the invention has the following technical effects:

(1) according to the invention, the sealing strip is set into a form combining a V-shaped structure and a square-shaped structure, and the hollow form and the support arm with the V-shaped structure are adopted, so that the elasticity of the sealing strip can be structurally improved, namely, the extrusion contact effect with the sealing surface is improved, meanwhile, the sealing strip is fixed and guided by using the U-shaped guide frame, the sealing strip can slide relative to the sealing surface to realize dynamic sealing, and the double sealing strips are arranged, so that multilayer protection can be realized, and even if water vapor or impurities pass through the first layer of sealing strip, the water vapor or impurities can enter the buffer transition space between the two sealing strips to be dissolved, so that the sealing effect can be further improved;

(2) according to the invention, the sealing strips in the U-shaped guide frame are isolated by using the rigid partition plate, so that the sealing strips arranged in parallel can not influence each other during compression, can move smoothly when the abrasion loss is compensated, and can form a buffer transition space between the two sealing strips to exert a further sealing effect, thereby forming an organic whole by the parallel sealing strips;

(3) the sealing strip is combined with the automatic compensation mechanism, the surface contact adopted in the prior art is improved into the line contact of the V-shaped structure, the V-shaped structure is easier to deform, the extrusion force with the sealing surface can be reduced, the abrasion of the sealing strip in the relative sliding process of the sealing strip and the sealing surface can be further reduced, the requirement on the compensation pressure of the automatic compensation mechanism is lower, the stress stability of the sealing strip structure can be ensured, and the abrasion is further reduced;

(4) according to the invention, the side protective baffle is arranged on the outer side of the sealing protection device, so that the side protective baffle can be used for blocking direct impact of water flow, the sealing protection pressure of the sealing strip protection structure is reduced, and the sealing protection capability of the sealing protection device is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a side view of the seal guard of the present invention mounted on an apparatus;

FIG. 2 is a cross-sectional view I-I of FIG. 1;

FIG. 3 is a top view of the seal guard of the present invention mounted on an apparatus;

FIG. 4 is a schematic view of the protection structure of the sealing strip of the present invention;

wherein, 1, moving the working table; 2. a cover plate; 3. fixing a workbench; 4. a side guard baffle; 5. a sealing strip protection structure; 51. an L-shaped fixing frame; 52. a U-shaped guide frame; 53. a sealing strip; 531. a V-shaped structure; 532. a square structure; 54. a support plate; 55. an automatic adjustment mechanism; 551. a spring; 552. a nut; 553. a bolt; 56. a rigid separator plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a sealing strip protection structure and a sealing protection device thereof, which are used for solving the problems in the prior art, and can realize multilayer protection by arranging sealing strips with V-shaped structures in parallel and arranging a buffer transition space between the two sealing strips, and even if water vapor or impurities pass through the first layer of sealing strip, the water vapor or the impurities can enter the buffer transition space between the two sealing strips to be dissolved, so that the sealing effect can be further improved.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 4, the present invention provides a sealing strip protection structure 5, the sealing strip protection structure 5 includes a U-shaped guide frame 52 and a sealing strip 53 juxtaposed in the U-shaped guide frame 52, wherein the cross section of the U-shaped guide frame 52 is U-shaped, and the whole sealing strip protection structure may be a strip-shaped structure. The sealing strip 53 may be made of a polymer material having waterproof, acid-resistant, high temperature-resistant, and alkali-resistant properties by injection molding. The U-shaped guide frame 52 can define the position of the sealing strip 53 on one hand, and can guide the moving direction and position of the sealing strip 53 on the other hand, and can also protect the sealing strip 53. The number of the seal strips 53 provided in the U-shaped guide frame 52 is generally two, and three, four or more strips may be provided. The sealing strip 53 comprises a square-shaped structure 532 and a V-shaped structure 531 connected to the square-shaped structure 532, that is, the sealing strip 53 is of a hollow structure as a whole, and the sealing strip 53 has higher flexibility and compressibility through the arrangement of the hollow structure. The V-shaped structure 531 and the square-shaped structure 532 may be integrally formed by a machining process, or may be separately manufactured and then integrally connected by clamping or bonding. The V-shaped structures 531 of the adjacent sealing strips 53 are not in contact, at this time, a sealing cavity is formed between two support arms of the V-shaped structure 531, and meanwhile, a buffer transition space is formed between the support arms of the adjacent V-shaped structures 531, the buffer transition space provides a space for outward deformation of the V-shaped structure 531 on one hand, and on the other hand, particles or other impurities enter the buffer transition space before reaching the sealing strip 53 of the inner layer through the sealing strip 53 of the outermost layer, so that the particles or other impurities can be blocked or prevented from passing through the sealing strip 53 of the inner layer again. The two arms of the V-shaped structure 531 extend out of the opening of the U-shaped guide frame 52, the gap between the U-shaped guide frame 52 and the sealing surface can be set according to actual conditions, but the gap is not easy to be too large, the gap is too large, the V-shaped structure 531 needs to go deep into the gap, and the effect of guiding and fixing by means of the U-shaped guide frame 52 can be weakened. After the U-shaped guide frame 52 is installed according to the set gap, how much the V-shaped structure 531 extends into the gap is related to the deformation amount of the V-shaped structure 531 itself, and the larger the deformation amount is, the more the V-shaped structure can extend, and the smaller the deformation amount is, the less the V-shaped structure extends, so that the V-shaped structure 531 can have a certain compression deformation amount. The V-shaped structure 532 is located inside the U-shaped guide frame 52 and abuts against the automatic adjustment mechanism 55, and the amount of the V-shaped structure 531 extending out of the U-shaped guide frame 52 can be adjusted by the automatic adjustment mechanism 55. Automatic adjustment mechanism 55 can be for forms such as elastic rubber body, spring body or metal shrapnel, can store certain potential energy, applys pressure for sealing strip 53, guarantees that sealing strip 53 and sealed face have certain extrusion force, and then guarantees sealed effect, simultaneously, can also compensate sealing strip 53's wearing and tearing volume, improves its life. According to the invention, the sealing strip 53 is arranged in a mode of combining the V-shaped structure 531 and the square-shaped structure 532, so that the elasticity of the sealing strip 53 can be improved structurally, namely the extrusion contact effect with the sealing surface is improved, meanwhile, the U-shaped guide frame 52 is utilized to realize the fixation and the guide of the sealing strip 53, the sealing strip can slide relative to the sealing surface to realize dynamic sealing, the arrangement of the double sealing strips 53 can realize multilayer protection, and even if water vapor or impurities pass through the first layer of the sealing strip 53, the water vapor or the impurities can enter the buffer transition space between the two sealing strips 53 to be dissolved, so that the sealing effect can be further improved.

Rigid partition plates 56 may be provided between the sealing tapes 53 arranged in parallel, the rigid partition plates 56 have a certain thickness, and can partition different sealing tapes 53, and form a guide space for a single sealing tape 53 by being engaged with the inner wall of the U-shaped guide frame 52, and the rigid partition plates 56 abut against the automatic adjustment mechanism 55, and perform compensation movement together with the sealing tapes 53 by the automatic adjustment mechanism 55. According to the invention, the sealing strips 53 in the U-shaped guide frame 52 are isolated by the rigid partition plates 56, so that the sealing strips 53 arranged in parallel can not influence each other during compression, can move smoothly during compensation of abrasion loss, and can form a buffer transition space between the two sealing strips 53 to exert a further sealing effect, thereby enabling the parallel sealing strips 53 to form an organic whole.

The height of the rigid partition 56 does not generally exceed the height of the square-shaped structure 532, and the height of the square-shaped structure 532 may be set to be greater than the width, that is, the square-shaped structure 532 itself is a thin and tall structure, which can extend the distance in the height direction. In addition, the square-shaped structure 532 can be matched with the rigid partition plate 56 to increase the guiding length in the height direction, thereby better playing the guiding function and improving the variability of the extrusion direction. In order to ensure that the V-shaped structures 531 can exert a better sealing effect (ensure the amount of compression deformation), the rigid partition plates 56 should not exceed the height of the square-shaped structures 532, that is, the rigid partition plates 56 should not be provided between the V-shaped structures 531. The purpose of this arrangement is to form a buffer transition space between the two V-shaped structures 531, so that the function of the buffer space described above can be achieved.

The automatic adjusting mechanism 55 can adopt a form that the elastic force potential energy of the spring 551 compensates the abrasion of the sealing strip 53, specifically, the automatic adjusting mechanism 55 comprises a supporting plate 54 abutting against the sealing strip 53 and the rigid partition plate 56 and a bolt 553 penetrating through and in threaded connection with the bottom surface of the U-shaped guide frame 52, wherein the width of the supporting plate 54 is less than or equal to the width of the U-shaped guide frame 52 and can freely move in the U-shaped guide frame 52; and the support plate 54 should be able to cover all of the rigid partition plates 56 and the sealing strips 53, that is, all of the rigid partition plates 56 and the sealing strips 53 can be pushed to move by the movement of the support plate 54. For the connection manner of the U-shaped guide frame 52 and the bolt 553, a threaded hole may be directly provided on the bottom surface of the U-shaped guide frame 52, and considering that the wall thickness of the U-shaped guide frame 52 may not be too thick, if the threaded hole is provided, the number of threads is small, so that the strength of the support bolt 553 may not be sufficient, and in order to ensure the threaded connection effect, the thickness of the bottom surface of the U-shaped guide frame 52 may be increased (the wall thickness is increased or a corresponding spacer is welded to extend the number of threads). The nut 552 may be welded to the bottom surface of the U-shaped guide frame 52, and if the nut 552 is provided, the nut 552 may be provided on the inner bottom surface or the outer bottom surface of the U-shaped guide frame 52. The bolt 553 is sleeved with a spring 551, one end of the spring 551 abuts against the support plate 54, and the other end abuts against the inner bottom surface of the U-shaped guide frame 52, and when in use, the spring 551 is in a compressed state, and can provide a certain elastic potential energy to the support plate 54. Furthermore, the distance between the support plate 54 and the inner bottom surface of the U-shaped guide frame 52, i.e., the compression amount of the spring 551, can be adjusted by adjusting the screwing depth of the bolt 553, so that the magnitude of the elastic potential energy can be adjusted, and the pressing degree of the weather strip 53 can be adjusted.

Further, in order to prevent the nut 552 from being disposed inside the U-shaped guide frame 52 to affect the inner space thereof, the nut 552 may be welded to the outer bottom surface of the U-shaped guide frame 52, and the bolt 553 may be threadedly coupled to the nut 552.

As shown in fig. 1 to 3, the invention further provides a sealing protection device, which may include the sealing strip protection structure 5 described above, where the sealing strip protection structure 5 is a strip, the U-shaped guide frame 52 is also a strip, the four strip-shaped sealing strip protection structures 5 enclose a quadrilateral structure, and the quadrilateral structure encloses a component to be protected inside, so as to implement sealing protection of the component. In applying this seal guard, the seal guard may be attached such that the V-shaped structure 531 of the weather strip 53 abuts against the upper movable table 1, and the movable table 1 may be moved to seal the contact position. In addition, cover plates 2 are further arranged on two sides of the movable workbench 1 to improve protection and shielding effects.

When the weather strip protection structures 5 are enclosed into a quadrilateral structure, for the processing of the connection positions, two adjacent weather strip protection structures 5 can be set to be at an oblique angle of 45 degrees and then connected, and the U-shaped guide frame 52, the rigid partition plate 56 and the weather strip 53 can be set to be at an oblique angle of 45 degrees. After the adjacent sealing strip protection structures 5 are connected, the contact position of the sealing strip 53 should have a certain extrusion deformation, so as to realize the sealing at the connection position.

After the weather strip protection structure 5 is installed, the V-shaped structure 531 is abutted against the bottom plane of the traverse table 1. The U-shaped guide frame 52 is connected with an L-shaped fixing frame 51, and the L-shaped fixing frame 51 can be arranged on any one arm of the U-shaped guide frame 52 and is used for supporting and fixing the U-shaped guide frame 52. The other arm of the L-shaped fixing frame 51 faces outward, extends toward the fixing table 3, and is fixed to the fixing table 3.

Side protective barriers 4 can be further arranged, wherein the side protective barriers 4 are arranged on the outer side of the quadrilateral structure and can be arranged along two long edges, namely the moving direction of the movable workbench 1. The side protective baffle 4 is installed on the movable workbench 1, and when the movable workbench 1 moves, the side protective baffle 4 is driven to move, and the length of the side protective baffle is longer than that of the sealing strip protective structure 5. The side guard 4 extends downward from the movable table 1, and blocks water flow or chips from striking the position of the weather strip 53. When the sealing strip is maintained, the side protective baffles 4 on the two sides can be detached firstly, then the whole sealing strip protective structure 5 is detached from the fixed workbench 3, the sealing strips 53 in the U-shaped guide frame 52 are replaced, and then the sealing strip protective structure is installed again. The sealing protection device is convenient to disassemble and assemble, simple to maintain, long in service life and low in maintenance cost, and can be continuously applied after the sealing strip 53 is replaced. In addition, the service life of each sealing strip 53 can be prolonged by the automatic adjusting mechanism 55 and the arrangement of the sealing strips 53 with the V-shaped structures 531 and the square-shaped structures 532.

To further prevent liquid from splashing or cutting into the position of the seal bar 53, the bottom surface of the side guard 4 may be inclined to extend to the lower portion of the U-shaped guide frame 52.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. The utility model provides a sealing strip protective structure which characterized in that: including U type leading truck and set up side by side sealing strip in the U type leading truck, the sealing strip includes mouthful style of calligraphy structure and connection mouthful structural V type structure of style of calligraphy, and is adjacent V type structure contactless, and adjacent form buffering transition space between the support arm of V type structure, V type structure stretches out the opening outside of U type leading truck, mouthful style of calligraphy structure is located inboard and butt of U type leading truck is on automatically regulated mechanism.

2. The weatherstrip protective structure according to claim 1, wherein: and rigid partition plates are arranged between the sealing strips which are arranged in parallel and are abutted against the automatic adjusting mechanism.

3. The weatherstrip protective structure according to claim 2, wherein: the height of the rigid partition plates does not exceed the height of the square-shaped structures, and the rigid partition plates are not arranged between the V-shaped structures.

4. The weather strip protective structure according to claim 2 or 3, wherein: the automatic adjusting mechanism comprises a supporting plate and a bolt, wherein the supporting plate is abutted to the sealing strip and the rigid partition plate, the bolt penetrates through the supporting plate and is in threaded connection with the bottom surface of the U-shaped guide frame, a spring is sleeved on the bolt, one end of the spring is abutted to the supporting plate, and the other end of the spring is abutted to the inner bottom surface of the U-shaped guide frame.

5. The weatherstrip protective structure according to claim 4, wherein: the outer bottom surface of U type leading truck is connected with the nut, the bolt with nut threaded connection.

6. A seal protector characterized by: the sealing strip protection structure comprises the sealing strip protection structure of any one of claims 1 to 5, wherein the sealing strip protection structure is in a strip shape and is enclosed into a quadrilateral structure, and the quadrilateral structure is used for sealing and protecting components enclosed by the sealing strip protection structure.

7. The seal guard of claim 6, wherein: two adjacent sealing strip protection structures form 45-degree oblique angle connection to form the top angle of the quadrilateral structure.

8. The seal guard of claim 6 or 7, wherein: the V-shaped structure is abutted to the bottom plane of the reciprocating moving workbench, the U-shaped guide frame is connected with an L-shaped fixing frame, and the other support arm of the L-shaped fixing frame faces outwards and extends towards the direction of the fixed workbench and is fixed on the fixed workbench.

9. The seal guard of claim 8, wherein: the side protective baffle is arranged on the outer side of the quadrilateral structure.

10. The seal guard of claim 9, wherein: the bottom surface of the side protective baffle extends to the lower part of the U-shaped guide frame in an inclined shape.