TW201424915A - Protection device - Google Patents

Abstract

A protection device for protecting a moving mechanism is disclosed, which includes a protective frame seat surrounding the moving mechanism, an elastic annular member equipped on the protective frame seat, and an end cover adjacent to the elastic annular member and driven by the moving mechanism to move relatively with the protective frame seat. The protective frame seat includes an inner wall, an outer wall, an upper end face connecting between the inner wall surface and outer wall surface, and a ring groove concavely provided on the upper end face. The elastic annular member is accommodated in the ring groove. The end cover includes a mounting surface adjacent to the elastic member and suitable for the moving mechanism to mount on. The area of mounting surface is larger than the area defined by the upper end face of the protective frame seat; thereby, capable of preventing the intrusion of the machining fluid or moisture into the interior to provide a superior protective effect to the moving mechanism.

Description

defensive equipment

The present invention relates to a protective structure for preventing foreign matter from invading, and more particularly to a protective device for protecting a moving mechanism of a processing machine.

The existing machine tool or the processing machine is provided with a moving mechanism for relatively displacing the tool and the workpiece. Since the processing environment usually has foreign matter that easily causes the moving mechanism to be damaged, for example, cutting debris, coolant, moisture, dust And corrosive gases, etc., therefore, in order to avoid damage to the moving mechanism due to rust, seizure or corrosion, a protective structure that can isolate the aforementioned boundary from the moving mechanism is usually provided.

Referring to FIG. 1 and FIG. 2, a protective panel for work area of a machine tool is disclosed in US Pat. No. 5,560,415, which has a substrate 11 for holding the moving mechanism 110, and a surrounding stack. a first frame plate 12 covering the outer peripheral portion of the substrate 11, a second frame plate 13 and a third surrounding and overlapping the outer peripheral portion of the first frame plate 12 and sequentially overlapping each other The frame plate 14, a fourth frame plate 15, and two corresponding sliding grid units 16, 17 are disposed and pivotally connected between the substrate 11 and the frame plates 12, 13, 14, 15. A sealing member (not shown) is disposed on the substrate 11 and the frame plates 12, 13, 14, and 15 respectively.

When the moving mechanism 110 moves, the substrate 11 is moved together, and the frame plates 12, 13, 14, 15 can be linked by the expansion and contraction activities of the two sliding grid units 16, 17. The protective plate can be changed from the state shown in FIG. 1 to the state shown in FIG. 2. Thereby making this protection The plates can be covered to protect the moving mechanism 110 within the moving range of the moving mechanism 110 by the first, second, third, and fourth frame plates 12, 13, 14, 15 disposed in a superposed manner. status.

Although the above design allows the moving mechanism 110 to remain in a protected state by being kept in the protective plate structure in which the substrate 11 and the frame plates 12, 13, 14, 15 are combined, there are still the following drawbacks:

1. The substrate 11 and the frame plates 12, 13, 14, 15 are combined in a stacked structure. Since the seams are formed at the overlapping structure, the protective plate can form more seams and is relatively easy. There is an increased risk of creating a gap and invading it by foreign objects.

2. The laminated structure formed by combining the plurality of frame plates 12, 13, 14, 15 results in a larger thickness and a heavier weight of the protective plate. Further, in order to make the substrate 11 and the frame plates 12, 13, and 14, 15 is still protected from each other after the relative movement, and the size and proportion of the body of the frame plates 12, 13, 14, 15 are also considered, so that the protection plate is more time consuming and more cumbersome to assemble. Complex missing.

3. Since a large number of seam structures are formed between the substrate 11 and the frame plates 12, 13, 14, and 15, if foreign matter or dirt in the processing environment adheres or is stuck at the joint, usually It is not easy to remove by the seal, and when the deposit is a crystal or a coagulated working fluid or liquid bead, it is easily taken along with the relative displacement of the substrate 11 and the frame plates 12, 13, 14, 15 The inside of the protective plate, or the inside of the protective plate penetrates through the joint between the components, causing corrosion or rusting of the moving mechanism. Therefore, the protective plate is not suitable for processing such as wet machining or use of corrosive liquid such as electrochemical processing. The environment has a lack of applications and lack of protection.

Accordingly, it is an object of the present invention to provide a protective device that is relatively simple in construction and that can be easily assembled in combination and that can be applied to a wet, corrosive processing environment.

Therefore, the guard device of the present invention is for protecting a moving mechanism, comprising a guard frame seat disposed around the moving mechanism, a resilient surround member disposed on the guard frame seat, and an adjacent the elastic surround member and receiving the The end cap of the moving mechanism that is displaced relative to the guard frame seat.

The guard frame includes an inner wall surface defining an accommodating space around the moving mechanism, an outer wall surface opposite to the inner wall surface, an upper end surface connected between the inner wall surface and the outer wall surface, and an edge A closed path surrounding the moving mechanism is recessed in the annular groove of the upper end surface.

The elastic surround is received in the annular groove of the shield frame.

The end cover includes a mounting surface adjacent to the elastic surrounding member and adapted to be fixed by the moving mechanism, and an outer surface opposite to the mounting surface, the outer peripheral edge of the mounting surface defining an area formed and larger than the protective frame The outer peripheral edge of the upper end face of the seat defines the area formed.

The utility model has the beneficial effects that the gap between the guard frame seat and the end cover can be effectively eliminated by providing the elastic surround member adjacent to the end cover on the guard frame seat, and the end cover is subjected to the cover The state of being movably adjacent to the elastic surrounding member is maintained in the case of the displacement, so that the effect of preventing the infiltration of the machining fluid or moisture into the accommodating space in the processing environment can be achieved without affecting the operation of the moving mechanism. , plus the area of the mounting surface of the end cap The area defined by the outer circumference of the upper end surface of the guard frame seat is such that when the guard is mounted on the processing machine, the machining fluid is only splashed on the outer surface of the end cover, and is not directly splashed to the end. The contact between the cover and the protective frame can surely prevent the infiltration of the working fluid into the accommodating space, so that the present invention can provide a good protective effect by a relatively simplified structure, and can be applied to a humid and corrosive processing environment.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 3, FIG. 4 and FIG. 7, a preferred embodiment of the guard device 2 of the present invention is for protecting a moving mechanism 100, and includes a guard frame 3 disposed around the moving mechanism 100. An elastic surrounding member 4 on the frame 3, an end cover 5 adjacent to the elastic surrounding member 4 and displaced by the moving mechanism 100 relative to the protective frame base 3, and a scraper mounted on the protective frame base 3 Unit 6.

The guard frame 3 includes an inner wall surface 31 defining an accommodating space 310 around the moving mechanism 100, an outer wall surface 32 opposite to the inner wall surface 31, and an inner wall surface 31 and the outer wall surface 32. An upper end surface 33, and a ring groove 34 recessed in the upper end surface 33 along a closed path surrounding the moving mechanism 100. The protective frame base 3 is a polygonal structure. In the embodiment, the rectangular parallelepiped structure is taken as an example, but the type thereof is not limited thereto.

The elastic surround 4 is received in the annular groove 34 of the shield frame 3.

Referring to FIG. 5, FIG. 6 and FIG. 7, the end cover 5 includes a mounting surface 51 adjacent to the elastic surrounding member 4 and adapted to be fixed by the moving mechanism 100, and an outer surface 52 opposite to the mounting surface 51. The outer circumference of the mounting surface 51 defines an area formed and is larger than an area defined by the outer circumference of the upper end surface 33 of the guard frame seat 3.

The doctor unit 6 includes a plurality of first scrapers 61 disposed around the shield frame 3 and having a first scraping edge 611 abutting the mounting surface 51 of the end cap 5, and a plurality of the scrapers 61 disposed thereon. The first scraper 61 has a second scraper 62 abutting against the second scraping edge 621 of the mounting surface 51 of the end cap 5, and the first scraping edge 611 of the first scraper 61 A plurality of gap portions 612 are formed therebetween, and the second scrapers 62 are disposed on the shield frame base 3 such that the second scraping end edges 621 are blocked from the gap portions 612.

In combination with the rectangular parallelepiped structure of the protective frame base 3, the four end annular end faces 33 are formed. The number of the first scrapers 61 of the scraper unit 6 is four, and two are respectively corresponding to the two long sides of the protective frame base 3. a first scraper 61 ' disposed on the side 35, and two first scrapers 61 " having a short length and respectively corresponding to the two short sides 36 of the shield frame 3. The gap portions 612 are formed in the first scrapers in addition between the end edge 611 'with such a first scraper edge 611', a second scraper blade such second end edges 62 162 is based on the two non-parallel or parallel to the long sides 35 and two short sides 36 The oblique direction is disposed between the first scraping edge 611 ' and the first scraping edge 611 ' .

In this embodiment, the second scraping edge 621 is formed at an angle of 45° with the first scraping edge 611 ′ and the first scraping edge 611 ′ . The frame holder 3 is provided with the blade unit 6, so that the second scraping edge 621, the first scraping edge 611 ' cooperate with the first scraping edge 611 " to completely surround the protection. The configuration of the upper end surface 33 of the frame 3 is such that when the guard 2 is used in a processing environment in which moisture or a chemical is used, even if a crystal salt or a condensed liquid is formed in the processing environment and adheres to the mounting surface 51 of the end cover 5 The design of the mounting surface 51 of the end cover 5 by the doctor unit 6 completely surrounding the upper end surface 33 of the protective frame base 3 when the end cover 5 is moved relative to the protective frame base 3 The abrasive salt or fluid is completely scraped off, thereby preventing the processing fluid or the wet air flow from reaching the end cover 5 and the shield frame 3, thereby producing a more comprehensive and effective protective effect. The configuration of the blade unit 6 is not limited thereto, and may be adjusted according to the structure of the shield frame 3. Wherein, in order to provide a good and effective scraping effect, such a first blade 61 ', 61 "the first scraper edge 611', 611" with such a second blade edge 62 of the second scraper 621 are Made of a rigid material, here a stainless steel is used.

Preferably, the guard 2 further includes a gas supply unit 7 that communicates with the annular groove 34 of the shield frame 3 to keep the annular groove 34 constant. The air supply unit 7 can be supplied to the ring groove 34 through the accommodating space 310 of the guard frame base 3 as shown in FIG. 7, that is, the air supply unit 7 and the guard frame seat are provided by an air supply pipe 71. The accommodating space 310 is connected to the accommodating space 310. The venting frame 3 further has a connecting air hole 37 extending through the ring groove 34 and the accommodating space 310, so that the air supply unit 7 supplies air to the accommodating space. The 310 is maintained in a positive pressure, and is also supplied to the ring groove 34 through the connecting air hole 37, so that the ring groove 34 also maintains a positive pressure, and the accommodating space 310 is The air pressure is greater than the air pressure of the ring groove 34. The air supply unit 7 is used to maintain the accommodating space 310 and the annular groove 34 with a positive pressure, in addition to maintaining the air quality of the accommodating space 310 to maintain the moving mechanism 100 in a better use state. It also helps to block the intrusion of moisture or fluid into the ring groove 34 and the accommodating space 310, and has the effect of strengthening the protective function.

In addition, as shown in FIG. 8 , a first air supply pipe 72 is disposed on the ring groove 34 from the air supply unit 7 , and a second air supply pipe 73 is disposed on the receiving space 310 and utilized. The gas unit 7 supplies gas to the ring groove 34 and the accommodating space 310 through the first air supply pipe 72 and the second air supply pipe 73, respectively, thereby controlling and adjusting the ring groove 34 and the accommodating space respectively. The gas pressure value in 310, and the pressure of the accommodating space 310 can be made larger than the air pressure of the ring groove 34 by means of an element (not shown) that can separately control and adjust the gas pressure.

It is worth mentioning that in order to assist in enhancing the scraping and sealing effect, the guard 2 further comprises an O-ring member 8 (O- disposed between the ring groove 33 of the guard frame 3 and the doctor unit 6. The arm frame 3 has an annular notch 38 recessed between the upper end surface 33 and the outer wall surface 31 and surrounding the ring groove 34. The O-ring member 8 is received in the ring-shaped recessed portion 38. The annular notch portion 38 abuts against the mounting surface 51 of the end cover 5, thereby adding a protective structure between the end cover 5 and the guard frame base 3, and the O-ring member 8 can be utilized. Assisting to enhance the scraping effect of the doctor unit 6, and adding a structure for keeping the end cover 5 in close contact with the shield frame 3 outside the elastic surrounding member 4, and the ring groove 34 and the receiving portion Gas in space 310 It is not easy to leak out and it is easier to maintain a positive pressure state.

Referring to Figures 6, 7 and 8, in addition, in order to prevent splashing or agglomerating liquid from flowing in the processing environment from the periphery of the end cap 5 to the center thereof, the end cap 5 also has a side adjacent to the mounting surface 51. The outer peripheral edge is disposed on the liquid stopping portion 53 of the mounting surface 51 along a closed path. The type of the liquid stopping portion 53 may be set to an annular groove type as shown in FIG. 7, or may be set as an annular rib type as shown in FIG. 8, and the effect of preventing the liquid from flowing inward can be achieved.

It should be noted that, in this embodiment, the elastic surrounding member 4 that can abut against the mounting surface 51 of the end cover 5 is disposed on the ring groove 34 of the protective frame base 3 at the same time, and is provided with The gas supply unit 7 in the annular groove 34 maintains a positive pressure, and achieves a very strict and powerful protective effect, but in actual application, the protection device can also be made according to the actual situation of the processing environment and the required degree of protection. The elastic surrounding member 4 is disposed in the ring groove 33 of the protective frame 3 to block foreign matter or moisture from entering the accommodating space 310, or the elastic surrounding member 4 is not provided and only the air supply unit is used. 7 The annular groove 33 is maintained in a positive pressure to block the intrusion of external moisture or liquid, and the protection effect against foreign matter or moisture can be achieved.

Preferably, referring to FIG. 9 and FIG. 10, in another embodiment of the present invention, the cleaning work is increased to avoid the arbitrarily dripping of the crystal salt or liquid scraped off by the doctor unit 6, and the doctor unit 6 is added. A collecting structure having a concentrated collection of crystalline salts or liquids on the first and second scraping blades 61, 62 is provided. Here, the configuration design of the collecting structure provided corresponding to one of the first scrapers 61 of the doctor unit 6 will be described, in FIGS. 9 and 10 . Only the arrangement of the collection structure of one of the first scrapers 61 is presented, and the collection structures of the remaining first scrapers 61 and the second scrapers 62 and the effects thereof are generated, and the first shown in FIGS. 9 and 10 The collection structure of the scraper 61 is similar and will not be described in detail.

The first scraping blades 61 of the scraper unit 6 each have a direction opposite to the guard frame base 3 and extend obliquely downward and inward from the first scraping end edge 611 to terminate at a first bottom end edge 613. a first guiding surface 610, the first guiding surface 610 further has two first side edges 614 connected between the first scraping end edge 611 and the first bottom end edge 613, the first bottom The end edge 613 has a pair of first liquid collecting sections 615 which should have a first scraping edge 611 and a length smaller than the length of the first scraping end edge 611, the first guiding surface 610 also having a plurality of spaced intervals and The first scraping edge 611 extends toward the first liquid collecting section 615 and is concentrated on the first guiding groove 616 of the first liquid collecting section 615. The scraper unit 6 further includes a plurality of first alignments respectively. The first liquid collecting section 615 of the scraper 61 is disposed to collect the first collecting tank 63 of the material flowing down through the first liquid collecting sections 615, and the plurality of first rows respectively corresponding to the first collecting tanks 63 Liquid tube 631. The number of the first scrapers 61 presented in conjunction with FIG. 9 and FIG. 10 is one. In the foregoing drawings, only one first collecting trough 63 and one first draining pipe 631 are also present. In addition, the first scraper 61 includes two opposite ends of the first liquid collecting section 615 from the first bottom end edge 613. The opposite ends of the first liquid collecting section 615 extend obliquely upward and outward along the first guiding surface 610 and respectively terminate in the second A first fixed rib 617 at one end edge 614.

By providing the first guiding grooves 616 on the first guiding surface 610 of the first scraper 61, it is helpful to guide the crystalline salt scraped by the first scraping blade 61. And the liquid flows down the first guiding groove 616 and concentrates in the first collecting groove 63, and then is discharged through the first discharging pipe 631, and the two first fixing ribs 617 can be used for Blocking the crystal salt or liquid flowing out of the guiding groove 616 to prevent it from dripping directly from the first scraper 61, and guiding it to the first collecting groove 63 by means of the protruding structure and the inclined arrangement. To ensure efficient and concentrated collection of crystalline salts and liquids.

In addition, since the first guiding grooves 616 are disposed in a downward and inward manner, the two first fixing ribs 617 are also arranged in a downwardly inclined manner toward the first collecting groove 63, whereby In addition to guiding the crystal salt and the liquid on the first scraper 61 to a fixed position, the utility model can reduce the size and space of the first collecting tank 63, and the first collection is convenient. The slot 63 also contributes to a space saving effect.

The scraper unit 6 of course also includes a plurality of second collecting grooves 64 respectively disposed at a second liquid collecting section 625 aligned with a second bottom end edge 623 of each of the second scraping blades 62, and each of the second scraping blades 62 A second guiding surface 620 is also formed with a plurality of second guiding grooves 626 which are spaced downwardly and inwardly to concentrate to the second collecting groove 64, and two second sides from the two sides thereof The second edge 624 is slanted downwardly and inwardly and extends to the two second fixing ribs 627 of the second collecting groove 64. The second guiding groove 626, the second fixing rib 627 and the first The arrangement design of the two collecting grooves 64 is the same as that of the collecting structure corresponding to the first scraping blade 61, and the effects are the same, and therefore will not be described again.

It is to be noted that the first and second scrapers 61 and 62 are respectively positioned by being locked to a plurality of support frames 391 fixed to the shield frame 3, and the first and second scrapers 61 are respectively positioned. 62, regardless of the lock on the support frame The outer surface 392 or the inner surface 393 of the 691 can provide a scraping action, so the locking position is not limited. In the present embodiment, in order to facilitate the collection of the crystalline salt or liquid flowing down the first and second guiding surfaces 610 and 620 by the first and second collecting grooves 63 and 64, the first and the first The two scrapers 61, 62 are respectively locked on the outer surface 392 of the support frame 391, and the first and second collecting grooves 63, 64 are respectively fixed on the outer wall surface 32 of the shield frame 3 and are located at the same The receiving platform 394 below the support frame 391 is positioned.

In summary, the protective device 2 of the present invention can achieve the following functions and advantages, so that the object of the present invention can be achieved:

1. By providing an elastic surrounding member 4 adjacent to the end cover 5 on the protective frame base 3, the gap between the protective frame base 3 and the end cover 5 is eliminated, or by the protective frame A ring groove 34 adjacent to the end cover 5 is disposed on the seat 3, and the gas supply unit 7 is used to maintain a positive pressure to block moisture or moisture outside the ring groove 34, thereby effectively preventing processing. The processing fluid or moisture in the environment invades into the accommodating space 310, so that the present invention can prevent foreign matter or moisture from invading to provide a good effective protective effect.

2. Since the area of the mounting surface 51 of the end cap 5 is larger than the area defined by the outer periphery of the upper end surface 33 of the shield frame 3, when the guard 2 of the present invention is mounted on the processing machine, the working fluid is only It will be splashed on the outer surface 52 of the end cover 5, and will not be directly splashed to the end of the end cover 52 and the shield frame 3, which can surely prevent the infiltration of the working fluid into the accommodating space 310, and can provide immediate effect. Protection and blocking effect.

3. The present invention provides a ring groove 34 by attaching the moving mechanism 100 to the mounting surface 51 of the end cover 5 and at the upper end surface 33 of the shield frame 3 The ring groove 34 is provided with the elastic surrounding member 4 adjacent to the mounting surface 51 or the gas is supplied to maintain a positive pressure in the ring groove 34, whereby the end cap 5 can be moved along with the movement mechanism 100. Keeping the state of being movably abutting on the guard frame 3, compared with the existing guard device, using a plurality of stacked frame plates to cooperate with the movement design of the moving mechanism (as shown in FIG. 1), the structure is simpler and simpler. Easy to assemble features.

4. The design of the present invention is formed only between the mounting surface 51 of the end cover 5 and the protective frame base 3 compared to the conventional protective plate formed by stacking a plurality of frame plates (as shown in FIG. 1). The seam can effectively reduce the risk of foreign matter intrusion by greatly reducing the design of the seam-forming area. In addition, the seam is also formed by the elastic surrounding member 4 or gas pressure to block the invasion of foreign matter, liquid or moisture. Therefore, the protection device 2 can provide a stable and perfect protection effect, and can be applied to a processing environment such as electrochemical processing which is relatively humid or which uses a corrosive liquid, and has a wider application range.

5. The present invention provides a more reinforced air supply unit 7 by providing a gas supply unit 7 that communicates with the annular groove 34 of the guard frame 3 such that the ring groove 34 is maintained at a positive pressure. In addition to the protective effect, since the air supply unit 7 maintains the positive pressure of the annular groove 34, a protective effect is first generated on the periphery of the accommodating space 310. Even if the positive pressure of the accommodating space 310 is reduced, the required level can be achieved. The protective effect, therefore, the amount of gas supplied to the accommodating space 310 can be reduced, and since the space of the ring groove 34 is relatively small, only a small amount of gas can achieve a positive pressure having a protective effect, thereby enabling The total amount of gas supplied to the vacant space 310 and the ring groove 34 is effectively saved, which helps to reduce the process cost.

The first guiding surface 610 and the second guiding surface 620 disposed on the first scraping blade 61 and the second scraping blade 62 of the scraper unit 6 respectively form the first downwardly and inwardly extending first. a guiding groove 616, a second guiding groove 626, and respectively corresponding to the first and second guiding grooves 616, 626, the first and second collecting grooves 63, 64, and the first The second guiding grooves 616, 626 are peripherally disposed to extend to the first and second fixing ribs 617, 627 of the first and second collecting grooves 63, 64, respectively, to help accelerate the collection of the first The crystal salt and the liquid scraped off by the scraper 61 and the second scraper 62 can effectively prevent the crystal salt and the liquid from dripping on the machine table and cause corrosion by the concentrated collecting action generated by the above structure, thereby facilitating the cleaning.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2‧‧‧Protection devices

3‧‧‧ protective frame

31‧‧‧ inner wall

310‧‧‧ accommodating space

32‧‧‧ outer wall

33‧‧‧ upper end

34‧‧‧ ring groove

35‧‧‧Longside

36‧‧‧ Short side

37‧‧‧Connecting vents

38‧‧‧ annular gap

391‧‧‧Support frame

392‧‧‧Outer surface

393‧‧‧ inner surface

394‧‧‧Receiving station

4‧‧‧Flexible surrounds

5‧‧‧End cover

51‧‧‧Installation surface

52‧‧‧ outer surface

53‧‧‧ Liquid Stop

6‧‧‧ scraper unit

61‧‧‧First scraper

610‧‧‧First guiding surface

611‧‧‧first scraping edge

612‧‧‧Gap section

613‧‧‧first bottom edge

614‧‧‧ first side edge

615‧‧‧First liquid collection section

616‧‧‧First guiding groove

617‧‧‧First fixed rib

61 ' ‧‧‧First Scraper

611 ' ‧‧‧first scraping edge

61 " ‧‧‧first scraper

611 " ‧‧‧first scraping edge

62‧‧‧second scraper

620‧‧‧First guiding surface

621‧‧‧second scraping edge

623‧‧‧second bottom edge

624‧‧‧second side edge

625‧‧‧Second liquid collection section

626‧‧‧Second guiding groove

627‧‧‧Second fixed rib

63‧‧‧First collection trough

631‧‧‧First drain tube

64‧‧‧Second collection trough

7‧‧‧ gas supply unit

71‧‧‧ gas supply pipe

72‧‧‧First air supply pipe

73‧‧‧Second air supply pipe

8‧‧‧O-rings

100‧‧‧Mobile agencies

1 is a front elevational view showing a first preferred embodiment of the protective device of the present invention; and FIG. 2 is a partial cross-sectional view showing a body of a porous substrate structure of the first preferred embodiment FIG. 3 is a perspective view showing a preferred embodiment of the guard device of the present invention; FIG. 4 is a schematic cross-sectional view of the guard device of FIG. 3, illustrating the preferred embodiment. The case where the one end cover of the embodiment is connected by a moving mechanism; FIG. 5 is a perspective exploded view showing the arrangement of a doctor unit around a guard frame; FIG. 6 is a perspective view different from the view of FIG. 3, illustrating the doctor unit of the preferred embodiment. FIG. 7 is a partial cross-sectional view showing a liquid stopping portion of the end cap in a groove pattern; FIG. 8 is a partial cross-sectional view showing the end cap The liquid stopping portion is a convex strip type; FIG. 9 is a partial front perspective view showing that the doctor unit according to another embodiment of the present invention includes a first collecting groove corresponding to a first scraping blade, and is formed on the first scraping blade. The case where the first guiding grooves are spaced apart; and FIG. 10 is a partial cross-sectional view showing the case where the first collecting groove of the doctor unit is received under the first blade.

2‧‧‧Protection devices

3‧‧‧ protective frame

31‧‧‧ inner wall

310‧‧‧ accommodating space

32‧‧‧ outer wall

33‧‧‧ upper end

34‧‧‧ ring groove

4‧‧‧Flexible surrounds

5‧‧‧End cover

51‧‧‧Installation surface

52‧‧‧ outer surface

53‧‧‧ Liquid Stop

6‧‧‧ scraper unit

8‧‧‧O-rings

100‧‧‧Mobile agencies

Claims (10)

A protective device for protecting a moving mechanism comprises: a protective frame seat comprising an inner wall surface defining an accommodating space around the moving mechanism, an outer wall surface opposite to the inner wall surface, and a connection therein An upper end surface between the wall surface and the outer wall surface, and a ring groove recessed in the upper end surface along a closed path surrounding the moving mechanism; an elastic surrounding member received in the ring groove of the shield frame seat And an end cover that is displaced relative to the guard frame by the moving mechanism, and includes a mounting surface adjacent to the elastic surround and adapted to be fixed by the moving mechanism, and an outer surface opposite to the mounting surface, The outer circumference of the mounting surface defines an area formed and is larger than an area defined by an outer circumference of the upper end surface of the guard frame seat. The protective device according to claim 1, further comprising a scraper unit mounted on the guard frame, the scraper unit comprising a plurality of surrounding the guard frame and respectively having abutting on the end cap a first scraper blade having a first scraping edge of the mounting surface, and a plurality of second scrapers disposed between the first scrapers and each having a second scraping edge abutting the mounting surface of the end cap a plurality of gap portions are formed between the first scraping end edges of the first scraping blades, and the second scraping blades are disposed on the guard frame in such a manner that the second scraping end edges are blocked outside the gap portions seat. The guard device of claim 2, wherein the first scrapers of the scraper unit each have a direction opposite to the guard frame seat and extend obliquely downward and inward from the first scraping end edge And ending at a first bottom end of the first guiding surface, the first guiding surface further having a connection at the first Trusging two first side edges between the end edge and the first bottom end edge, the first bottom end edge having a pair of first scraping end edges and a length less than a length of the first scraping end edge a first liquid collecting section, the first guiding surface further having a plurality of spaced apart and extending from the first scraping end edge toward the first liquid collecting section to concentrate on the first guiding groove of the first liquid collecting section The squeegee unit further includes a plurality of first collection slots disposed respectively aligned with the first squeegees to collect first sump of material flowing from the first sump. The protective device of claim 3, wherein the first scrapers of the scraper unit each include two opposite ends of the first liquid collecting section from the first bottom end along the first guiding a first fixing rib disposed obliquely upward and outwardly and ending at the two first side end edges, respectively. The guard device of claim 3, wherein the second scrapers of the scraper unit each have a direction opposite to the guard frame seat and extend obliquely downward and inward from the second scraping end edge a second guiding surface terminating at a second bottom end edge, the second guiding surface further having two second side edges connected between the second scraping end edge and the second bottom end edge The second bottom end edge has a pair of second liquid collecting sections which should have a second scraping end edge and a length smaller than a length of the second scraping end edge, the second guiding surface further having a plurality of spaced intervals and The second scraping end edge extends toward the second liquid collecting section to concentrate on the second guiding groove of the second liquid collecting section, and the scraper unit further includes a plurality of second sets respectively aligned with the second scraping blades The liquid section is arranged to collect a second collection tank of the material flowing down from the second liquid collection section. The guard device of claim 5, wherein the second scrapers of the scraper unit each include two from the second bottom edge The opposite ends of the two liquid collecting sections 2 are inclined upwardly along the second guiding surface and extend outwardly and terminate at the second fixing ribs at the second second end edges, respectively. The guard device according to any one of claims 1 to 6, further comprising an O-ring member disposed around the ring groove and abutting the mounting surface of the end cover . The protective device according to any one of claims 1 to 6, wherein the end cap further has a liquid stopping portion disposed adjacent to the outer peripheral edge of the mounting surface and disposed on the mounting surface along a closed path The liquid stopping portion is an annular groove or a ring-shaped rib type. The protective device according to any one of claims 1 to 6, further comprising a gas supply unit that communicates with the annular groove of the shield frame to maintain the positive pressure of the annular groove . The protection device according to claim 9, wherein the air supply unit is further connected to the accommodation space of the protection frame seat, and the air pressure of the accommodation space is greater than the air pressure of the ring groove.