Stacked dust extraction device for linear transmission mechanism

Abstract

The present application relates to a kind of for linear transmission mechanism in fold pull dustproof device, including mutually matched inner sealing plate (4), middle sealing plate (5) and outer sealing plate (6), inner sealing plate (4) is equipped with inner stroke hole (4a), inner limiting hole (4b) and moving hole (4c), the inner limiting column (1a) of main body frame (1) vertically passes through moving hole (4c) and is slidably connected with inner sealing plate (4);Middle sealing plate (5) is equipped with middle stroke hole (5a), middle limiting hole (5b) and middle limiting column (5c), middle limiting column (5c) vertically passes through inner limiting hole (4b) and is slidably connected with inner sealing plate (4);Outer sealing plate (6) is equipped with shaft head mounting hole (6a) and outer limiting column (6b), outer limiting column (6b) vertically passes through middle limiting hole (5b) and is connected with middle sealing plate (5).The present application has the advantages of realizing the dustproof protection of narrow-gap space open structure, without additional power, compact structure, and good protection effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of equipment manufacturing, in particular to a stacked pull dustproof device for a linear transmission mechanism. BACKGROUND

[0002] In the commonly used linear transmission of screw nut, gear rack and chain wheel chain, in order to protect the corresponding track, transmission parts such as screw nut, gear rack and chain wheel chain from dust and impurities, soft accordion protective cover, steel sleeve type pull protective cover or power driven roller shutter door chain protective cover are usually used. However, for the linear transmission mechanism with a protective cover cross-section height of less than 10mm and no space for installing power, there is no corresponding dust cover on the market to protect the mechanism. SUMMARY

[0003] The present application aims to solve the problem of single structure of the existing protective mechanism and inability to cope with narrow space, and provides a stacked pull dustproof device for a linear transmission mechanism, which can realize dust and impurity protection of open structure in narrow gap space, without external power, compact structure and good protection effect.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] A stacked pull dustproof device for a linear transmission mechanism, comprising a main frame of the linear transmission mechanism and a screw rod and a nut seat arranged in the main frame, an inner sealing plate is connected to the main frame, the inner sealing plate is arranged opposite to one side of the screw rod, the inner sealing plate is provided with an inner stroke hole, an inner limiting hole and a moving hole, the axes of the three holes are parallel to the axis of the screw rod, an inner limiting column is fixed on the main frame, the inner limiting column vertically penetrates the moving hole and is slidably connected with the inner sealing plate, so as to limit the moving distance of the inner sealing plate on the main frame;

[0006] An outer sealing plate is arranged on the outer side of the inner sealing plate, the outer sealing plate is provided with a middle stroke hole, a middle limiting hole and a middle limiting column, the middle stroke hole is located on the same axis as the inner stroke hole, the axes of the middle limiting hole and the middle stroke hole are arranged parallel to each other, the middle limiting column vertically penetrates the inner limiting hole and is slidably connected with the inner sealing plate, so as to limit the moving distance of the middle sealing plate on the inner sealing plate;

[0007] An outer sealing plate is arranged on the outer side of the inner sealing plate, the outer sealing plate is provided with a middle stroke hole, a middle limiting hole and a middle limiting column, the middle stroke hole is located on the same axis as the inner stroke hole, the axes of the middle limiting hole and the middle stroke hole are arranged parallel to each other, the middle limiting column vertically penetrates the inner limiting hole and is slidably connected with the inner sealing plate, so as to limit the moving distance of the middle sealing plate on the inner sealing plate;

[0008] The middle sealing plate can shield the inner stroke hole of the inner sealing plate during translation, and the outer sealing plate can shield the middle stroke hole of the middle sealing plate during translation, so as to achieve the dustproof purpose.

[0009] Further, the inner sealing plate is a first sealing plate, the inner stroke hole and the inner limiting hole are a first stroke hole and a first limiting hole respectively, the inner limiting column is a first limiting column, and the first stroke hole is arranged opposite to the screw rod and the screw nut seat, reserving an idle stroke for the movement range of the screw nut seat.

[0010] Further, the middle sealing plate includes a group of sealing plates, which are sequentially a second sealing plate, a third sealing plate and a fourth sealing plate, the second sealing plate is provided with a second stroke hole, a second limiting hole and a second limiting column, the third sealing plate is provided with a third stroke hole, a third limiting hole and a third limiting column, the fourth sealing plate is provided with a fourth stroke hole, a fourth limiting hole and a fourth limiting column, the second stroke hole, the third stroke hole and the fourth stroke hole are flush with the first stroke hole, and the second sealing plate, the third sealing plate and the fourth sealing plate sequentially shield the first stroke hole, the second stroke hole and the third stroke hole for sequentially stacking until full sealing.

[0011] Further, the second limiting column vertically passes through the first limiting hole and is connected with the first sealing plate, the first sealing plate and the second sealing plate form a sliding guide cooperation, the third limiting column vertically passes through the second limiting hole and is connected with the second sealing plate, the second sealing plate and the third sealing plate form a sliding guide cooperation, and the fourth limiting column vertically passes through the third limiting hole and is connected with the third sealing plate, the third sealing plate and the fourth sealing plate form a sliding guide cooperation.

[0012] Further, the outer sealing plate is a fifth sealing plate, the outer limiting column is a fifth limiting column, the fifth limiting column vertically passes through the fourth limiting hole and is connected with the fourth sealing plate, and the fourth sealing plate and the fifth sealing plate form a sliding guide cooperation.

[0013] Further, the inner stroke hole is arranged in the middle of the inner sealing plate, the inner limiting hole and the movement hole are arranged on one side of the inner stroke hole and staggered on the upper and lower sides of the inner sealing plate.

[0014] Further, the middle stroke hole is arranged in the middle of the middle sealing plate, the middle limiting hole and the middle limiting column are respectively arranged on both sides of the middle stroke hole and are respectively arranged at the corners of the middle sealing plate.

[0015] Further, the shaft head mounting hole is arranged in the middle of the outer sealing plate, and the outer limiting column is arranged at a corner of the outer sealing plate.

[0016] Further, the inner stroke hole, the middle stroke hole and the outer stroke hole are large long-narrow holes, the inner limiting hole, the movement hole and the middle limiting hole are small long-narrow holes, and the inner limiting column, the middle limiting column and the outer limiting column are cylindrical bosses.

[0017] Further, the inner sealing plate, the middle sealing plate and the outer sealing plate are all thin steel plate structures, and the thickness is 1mm≤d<2mm, so as to realize dustproof and impurity prevention of the narrow gap space open structure.

[0018] Compared with the prior art, the technical scheme of the present application has the advantages of:

[0019] (1) The present application adopts a stacked thin steel plate structure, and can realize dustproof and impurity prevention of the narrow gap space open structure;

[0020] (2) The sealing plates are stacked in layers, and can be driven by each other and limited after overtravel, and the moving power is driven by the functional moving head, without additional power, and the structure is compact;

[0021] (3) The long waist type travel hole and the shaft head mounting hole are screw nut seat head mounting spaces, which can drive the sealing plates to slide back and forth, so as to achieve the purpose of sealing the exposed screw rod during movement;

[0022] (4) The small long waist type limiting hole is an effective dustproof distance for sealing, and can also prevent additional movement;

[0023] (5) The limiting column in the form of a cylindrical boss at the corner, which is mounted at the small long waist hole of the adjacent sliding sealing plate, can drive the adjacent sealing plate to slide and limit the over-limit sliding of the adjacent sealing plate. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of the overall structure of the stacked pull-out dustproof device in the linear transmission mechanism of the present application;

[0025] Figure 2 It is a perspective view of the overall structure of the stacked pull-out dustproof device in the linear transmission mechanism of the present application; Figure 1

[0026] Figure 3 It is a structure diagram of the inner sealing plate of the present application;

[0027] Figure 4 It is a structure diagram of the middle sealing plate of the present application;

[0028] Figure 5 It is a structure diagram of the outer sealing plate of the present application;

[0029] Figure 6 It is a left view of the stacked pull-out dustproof device of the present application;

[0030] Figure 7 It is a right view of the stacked pull-out dustproof device of the present application;

[0031] Figure 8 It is a top view of the stacked pull-out dustproof device of the present application;

[0032] Figure 9 ​The exploded view of the pull dustproof device of the first embodiment. DETAILED DESCRIPTION

[0033] Embodiment 1

[0034] In order to make the present application clearer, the following further describes a stacked pull dustproof device for a linear transmission mechanism in the present application with reference to the accompanying drawings. The specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0035] The design idea of the present application is as follows: Figure 1 and Figure 2 A sealing plate is installed at the mechanism to be protected, and a thread seat head 3a installation space is reserved at the center of the plate. Since the moving range of the thread seat 3 is large and the space available at the head of the lead screw 2 is small, that is, the size of the first layer of sealing plate is not large, and the sealing plate can seal and block the whole process, an idle stroke needs to be reserved, as shown in Figure 3 Then, the second layer of sealing plate, as shown in Figure 4 continues to seal and block. If the second layer of sealing plate cannot seal completely, additional sealing plates are stacked until the whole sealing plate is sealed. The last layer of sealing plate is shown in Figure 5 .

[0036] Figure 3 and Figure 4 The large waist-shaped hole in Figure 5 and the round hole in Figure 3 are the thread seat head installation spaces, which can drive the sealing plate to slide back and forth to achieve the purpose of sealing and blocking the exposed lead screw during movement. Figure 4 The small waist-shaped hole in Figure 4 and Figure 5 is the effective dustproof distance for sealing and blocking, which prevents additional movement. Figure 1 The cylindrical boss at the corner in is installed at the small waist-shaped hole of the adjacent sliding sealing plate, which can drive the adjacent sliding plate to slide and limit the over-limit sliding of the adjacent sealing plate. After installation, it is shown in

[0037] . Figure 1 According to the above idea, the present application provides a stacked pull dustproof device for a linear transmission mechanism, as shown in Figure 2 , which comprises a main frame 1 of the linear transmission mechanism, a lead screw 2 and a thread seat 3 arranged in the main frame 1, and characterized in that:

[0038] Referring to Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 9The inner sealing plate 4 is provided on the main frame 1, the inner sealing plate 4 is provided as a first sealing plate, the inner sealing plate 4 is provided opposite to one side of the lead screw 2, the inner sealing plate 4 is provided with an inner stroke hole 4a, an inner limiting hole 4b and a moving hole 4c, the inner stroke hole 4a and the inner limiting hole 4b are respectively provided as a first stroke hole and a first limiting hole, the axes of the three holes are all parallel to the axis of the lead screw 2, the first stroke hole is provided opposite to the lead screw 2 and the nut seat 3, and an idle stroke is reserved for the moving range of the nut seat 3;

[0039] The inner limiting column 1a is fixed on the main frame 1, the inner limiting column 1a is provided as a first limiting column, the inner limiting column 1a vertically penetrates through the moving hole 4c and is connected with the inner sealing plate 4, so as to limit the moving distance of the inner sealing plate 4 on the main frame 1;

[0040] Referring to Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 9 , the outer side of the inner sealing plate 4 is provided with a middle sealing plate 5, the middle sealing plate 5 includes a second sealing plate 51, a third sealing plate 52 and a fourth sealing plate 53, the second sealing plate 51 is provided with a second stroke hole 51a, a second limiting hole 51b and a second limiting column 51c, the third sealing plate 52 is provided with a third stroke hole 52a, a third limiting hole 52b and a third limiting column 52c, the fourth sealing plate 53 is provided with a fourth stroke hole 53a, a fourth limiting hole 53b and a fourth limiting column 53c, the second stroke hole 51a, the third stroke hole 52a and the fourth stroke hole 53a are flush with the first stroke hole, the second sealing plate 51, the third sealing plate 52 and the fourth sealing plate 53 successively shield the first stroke hole, the second stroke hole 51a and the third stroke hole 52a, so as to be successively stacked until fully sealed;

[0041] The second limiting column 51c vertically penetrates through the first limiting hole and is connected with the first sealing plate, the first sealing plate and the second sealing plate 51 form a sliding guide cooperation, the third limiting column 52c vertically penetrates through the second limiting hole 51b and is connected with the second sealing plate 51, the second sealing plate 51 and the third sealing plate 52 form a sliding guide cooperation, the fourth limiting column 53c vertically penetrates through the third limiting hole 52b and is connected with the third sealing plate 52, the third sealing plate 52 and the fourth sealing plate 53 form a sliding guide cooperation, so as to limit the moving distance between adjacent sealing plates;

[0042] Referring to Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 9 , the outer side of the middle sealing plate 5 is provided with an outer sealing plate 6, the outer sealing plate 6 is provided as a fifth sealing plate, the outer sealing plate 6 is provided with a shaft head mounting hole 6a and an outer limiting column 6b, the outer limiting column 6b is provided as a fifth limiting column, the fifth limiting column vertically penetrates through the fourth limiting hole 53b and is connected with the fourth sealing plate 53, the fourth sealing plate 53 and the fifth sealing plate form a sliding guide cooperation.

[0043] Referring to Figure 2 , Figure 7 and Figure 8 , the screw nut seat head 3a vertically passes through the inner stroke hole 4a, the middle stroke hole 5a and the shaft head mounting hole 6a in turn, and is connected with the outer cover plate 6 through a nut, so as to drive the outer cover plate to move together with the front and rear stacking through the movement of the screw nut on the screw rod.

[0044] Referring to Figures 6-8 , in the present application, the inner cover plate 4 can block the inner stroke hole 4a of the inner cover plate 4 during translation, and the outer cover plate 6 can block the middle stroke hole 5a of the middle cover plate 5 during translation, so as to achieve the purpose of dust prevention.

[0045] Referring to Figure 9 , in the present embodiment, the inner stroke hole 4a is arranged in the middle of the inner cover plate 4, and the inner limiting hole 4b and the moving hole 4c are arranged on one side of the inner stroke hole 4a and staggered on the upper and lower sides of the inner cover plate 4;

[0046] The middle stroke hole 5a is arranged in the middle of the middle cover plate 5, and the middle limiting hole 5b and the middle limiting column 5c are arranged on both sides of the middle stroke hole 5a respectively, and are arranged at the corners of the middle cover plate 5 respectively;

[0047] The shaft head mounting hole 6a is arranged in the middle of the outer cover plate 6, and the outer limiting column 6b is arranged at a corner of the outer cover plate 5;

[0048] The inner stroke hole 4a, the middle stroke hole 5a and the outer stroke hole 6a are all large long waist type holes, the inner limiting hole 4b, the moving hole 4c and the middle limiting hole 5b are all small long waist type holes, and the inner limiting column 1a, the middle limiting column 5c and the outer limiting column 6b are all cylindrical bosses.

[0049] The inner cover plate 4, the middle cover plate 5 and the outer cover plate 6 are all thin steel plate structures, and the thickness is 1mm≤d<2mm, so as to realize the dustproof and impurityproof protection of the narrow gap space open structure.

[0050] The present application adopts a stacked thin steel plate structure, which can realize the dustproof and impurityproof protection of the narrow gap space open structure; at the same time, the cover plates are stacked in layers, and are limited to each other after overtravel, and the moving power is driven by the functional moving head, without the need for external power, and the structure is compact.

[0051] In addition to the above embodiments, the present application can also have other embodiments. Any technical solution formed by equivalent substitution or equivalent transformation falls within the protection scope required by the present application.

Claims

1. A dustproof device for linear transmission mechanism, comprising a main frame (1) of the linear transmission mechanism, a screw rod (2) and a nut seat (3) arranged in the main frame (1), characterized in that: the main frame (1) is connected with an inner sealing plate (4) arranged opposite to one side of the screw rod (2), the inner sealing plate (4) is provided with an inner stroke hole (4a), an inner limiting hole (4b) and a moving hole (4c), the axes of the three holes are parallel to the axis of the screw rod (2), and the main frame (1) is fixed with an inner limiting column (1a) vertically penetrating through the moving hole (4c) and being slidably connected with the inner sealing plate (4); an outer side of the inner sealing plate (4) is provided with a middle sealing plate (5), the middle sealing plate (5) is provided with a middle stroke hole (5a), a middle limiting hole (5b) and a middle limiting column (5c), the middle stroke hole (5a) is located on the same axis as the inner stroke hole (4a), and the axes of the middle limiting hole (5b) and the middle stroke hole (5a) are arranged parallel to each other, the middle limiting column (5c) vertically penetrates through the inner limiting hole (4b) and is slidably connected with the inner sealing plate (4); an outer side of the middle sealing plate (5) is provided with an outer sealing plate (6), the outer sealing plate (6) is provided with a shaft head mounting hole (6a) and an outer limiting column (6b), the outer limiting column (6b) vertically penetrates through the middle limiting hole (5b) and is connected with the middle sealing plate (5), the nut seat (3) is connected with a nut seat head (3a), the nut seat head (3a) vertically penetrates through the inner stroke hole (4a), the middle stroke hole (5a) and the shaft head mounting hole (6a) in sequence, and the nut seat head (3a) is connected with the outer sealing plate (6) through a nut; the middle sealing plate (5) can shield the inner stroke hole (4a) of the inner sealing plate (4) during translation, and the outer sealing plate (6) can shield the middle stroke hole (5a) of the middle sealing plate (5) during translation.

2. The dustproof device for linear transmission mechanism according to claim 1, characterized in that: the inner sealing plate (4) is a first sealing plate, the inner stroke hole (4a) and the inner limiting hole (4b) are a first stroke hole and a first limiting hole respectively, and the inner limiting column (1a) is a first limiting column, the first stroke hole is arranged opposite to the screw rod (2) and the nut seat (3), and an empty stroke is reserved for the moving range of the nut seat (3).

3. The dustproof device for linear transmission mechanism according to claim 2, characterized in that: ​ ​ The middle sealing plate (5) comprises a set of sealing plates, which are sequentially provided as a second sealing plate (51), a third sealing plate (52) and a fourth sealing plate (53), the second sealing plate (51) is provided with a second stroke hole (51a), a second limiting hole (51b) and a second limiting column (51c), the third sealing plate (52) is provided with a third stroke hole (52a), a third limiting hole (52b) and a third limiting column (52c), the fourth sealing plate (53) is provided with a fourth stroke hole (53a), a fourth limiting hole (53b) and a fourth limiting column (53c), the second stroke hole (51a), the third stroke hole (52a) and the fourth stroke hole (53a) are flush with the first stroke hole, and the second sealing plate (51), the third sealing plate (52) and the fourth sealing plate (53) sequentially shield the first stroke hole, the second stroke hole (51a) and the third stroke hole (52a).

4. The dustproof device according to claim 3, wherein: The second limiting column (51c) vertically penetrates the first limiting hole and is connected with the first sealing plate, the first sealing plate and the second sealing plate (51) form a sliding guide cooperation, the third limiting column (52c) vertically penetrates the second limiting hole (51b) and is connected with the second sealing plate (51), the second sealing plate (51) and the third sealing plate (52) form a sliding guide cooperation, and the fourth limiting column (53c) vertically penetrates the third limiting hole (52b) and is connected with the third sealing plate (52), the third sealing plate (52) and the fourth sealing plate (53) form a sliding guide cooperation.

5. The dustproof device according to claim 4, wherein: The outer sealing plate (6) is provided as a fifth sealing plate, and the outer limiting column (6b) is provided as a fifth limiting column, the fifth limiting column vertically penetrates the fourth limiting hole (53b) and is connected with the fourth sealing plate (53), and the fourth sealing plate (53) and the fifth sealing plate form a sliding guide cooperation.

6. The dustproof device according to any one of claims 1-5, wherein: The inner stroke hole (4a) is arranged at the middle part of the inner sealing plate (4), the inner limiting hole (4b) and the moving hole (4c) are arranged on the same side of the inner stroke hole (4a) and are staggered on the upper and lower sides of the inner sealing plate (4).

7. The dustproof device according to any one of claims 1-5, wherein: The middle stroke hole (5a) is arranged at the middle part of the middle sealing plate (5), the middle limiting hole (5b) and the middle limiting column (5c) are respectively arranged on both sides of the middle stroke hole (5a) and are respectively arranged at the corners of the middle sealing plate (5).

8. The dustproof device according to any one of claims 1-5, wherein: The shaft head mounting hole (6a) is arranged at the middle part of the outer sealing plate (6), and the outer limiting column (6b) is arranged at a corner of the outer sealing plate (6).

9. The dustproof device according to any one of claims 1-5, wherein: The inner stroke hole (4a) and the middle stroke hole (5a) are large long waist type holes, the inner limit hole (4b), the moving hole (4c) and the middle limit hole (5b) are small long waist type holes, and the inner limit column (1a), the middle limit column (5c) and the outer limit column (6b) are cylindrical bosses.

10. The dustproof device according to any one of claims 1-5, characterized in that: The inner sealing plate (4), the middle sealing plate (5) and the outer sealing plate (6) are thin steel plate structures, and the thickness is 1mm≤d<2mm.

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