Folding dust hood and displacement structure thereof

Abstract

The utility model belongs to the field of dust collection, and provides a folding type dust collection cover which comprises an upper cover disc, a lower cover disc, a folding framework connected to the outer portions of the upper cover disc and the lower cover disc, and cover cloth connected to the folding framework. A moving module is arranged between the upper cover disc and the lower cover disc, the moving module drives the folding framework to contract or unfold, and the upper cover disc is of a hollow structure and is communicated with a dust collection device. Through the folding design, the cover cloth can be contracted or unfolded, the occupied area is reduced during contraction, and the space utilization rate of a workshop is increased; when the dust collector is unfolded, the dust collector can cover a station to prevent smoke dust from diffusing, so that the smoke dust collecting rate is improved; according to the device, on-site work is not influenced, on-site smoke dust collecting and purifying effects are improved, and the technical problems that on-site smoke dust is easy to diffuse and not easy to capture are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of dust collection, in particular to a foldable dust collection hood and a displacement structure thereof. Background Art

[0002] At present, the smoke and dust collection in industrial welding workshops is mainly based on fixed hoods, upper fixed hoods + lower hanging curtains, telescopic hoods, suction arms, suction ports + retractors bound to welding guns.

[0003] Fixed hood

[0004] Fixed covers are mostly made of steel pipes as frames and thin steel plates or PC boards for maintenance, which occupy production space and form a relatively closed space, making it impossible to hoist or transfer workpieces, affecting production. They are only suitable for workstations without hoisting or large workpieces entering and exiting, which has great limitations. Moreover, the air inside the cover is stuffy and the working comfort is low.

[0005] Upper fixed cover + lower hanging curtain

[0006] The lower hanging curtain solves the problem of workpieces and personnel entering and exiting, but it also occupies production space and makes it impossible to lift workpieces from above. It is only suitable for workstations without lifting and large workpieces entering and exiting, and has great limitations.

[0007] Telescopic hood

[0008] Although the telescopic cover solves the problem of workpiece lifting, its investment cost is high. Even if it is retracted to the minimum, the root cover and the track still occupy a large production space, making it impossible to install it in many workshops due to limitations of tooling technology.

[0009] Suction arm

[0010] Although the suction arm takes up little space and is flexible to install, its suction port is only the size of a bowl and has a small coverage area. One suction arm can only be used for one welding point. If the working range is slightly larger, workers need to pull the suction port of the suction arm while moving for welding, which increases the workers' extra labor burden and reduces their willingness to use the arms, causing many suction arms to become decorations and be abandoned. For workstations with multiple welding points in close proximity, installing multiple sets of suction arms will undoubtedly increase the investment cost and affect the transportation of workpieces.

[0011] Suction port + hose retractor attached to the welding gun

[0012] This method requires workers to pull the dust removal hose while welding. The suction port is installed on the welding gun, which increases the weight of the welding gun. Workers are less willing to use it, and it will be abandoned after a long time, resulting in a waste of resources.

[0013] Therefore, the current welding fume collection is difficult due to the hoisting and operation of process tools, frequent changes in welding positions due to different product models, and limited production space, as well as cumbersome operations for workers. Utility Model Content

[0014] The utility model provides a foldable dust hood and a displacement structure thereof, which are used to solve relevant technical problems in the background technology.

[0015] The technical solution provided by the utility model is as follows: a foldable dust hood, comprising: an upper cover plate, a lower cover plate, a folding frame connected to the outside of the upper cover plate and the lower cover plate, and a cover cloth connected to the folding frame; a movable module is arranged between the upper cover plate and the lower cover plate, the movable module drives the folding frame to shrink or expand, and the upper cover plate is a hollow structure connected to the dust collection device.

[0016] In one embodiment, the mobile module includes: a scissors-type telescopic arm, one end of the scissors-type telescopic arm is connected to the upper cover plate through a first horizontal plate, and the other end of the scissors-type telescopic arm is connected to the lower cover plate; a first motor is connected to the lower cover plate, and the output shaft of the first motor is transmission-connected to a screw rod, and the screw rod passes through the first horizontal plate; a second horizontal plate is connected to the middle part of the scissors-type telescopic arm, and a screw nut slidably connected to the screw rod is connected to the second horizontal plate.

[0017] In one embodiment, the upper cover plate is connected to the dust suction device through a dust suction pipe fitting, and the dust suction pipe fitting includes: a dust suction air duct elbow connected to the upper cover plate, and a dust suction hose connecting the dust suction air duct elbow and the dust suction device.

[0018] In one embodiment, the cover cloth is unfolded into a circular or polygonal structure.

[0019] In one embodiment, a lamp is connected inside the folding frame.

[0020] In one embodiment, the folding skeleton includes: an upper arm, an upper middle arm, an upper forearm, a lower arm, a lower middle arm and a lower forearm; one end of the upper arm is hinged to the upper cover plate, and the other end thereof is hinged to the middle part of the lower arm; one end of the upper middle arm is hinged to the middle part of the upper arm, and the other end is hinged to one end of the upper forearm, and the other end of the upper forearm is hinged to the middle part of the lower forearm; one end of the lower arm is hinged to the lower cover plate, and the other end thereof is hinged to the middle part of the upper forearm; one end of the lower middle arm is hinged to the middle part of the lower arm, and the other end thereof is hinged to one end of the lower forearm.

[0021] A dust hood displacement structure is used for driving a foldable dust hood to move.

[0022] In one embodiment, the displacement structure includes: a swing arm structure, and a telescopic cylinder connected to the swing arm structure; a connecting piece is provided on the upper cover plate, and a telescopic end of the telescopic cylinder is connected to the connecting piece.

[0023] In one embodiment, the swing arm structure includes: a first column, a vertical arm rotatably connected to the outside of the first column, a horizontal arm connected to the vertical arm, a first gear connected to the first column, a second gear connected to the horizontal arm and meshing with the first gear, and a second motor transmission connected to the second gear.

[0024] In one embodiment, the displacement structure includes: a base, a second column rotatably connected to the base, a telescopic arm movably connected to the second column, and a pull rod hinged to the telescopic arm and the second column respectively; one end of the telescopic arm is movably connected to the second column through a driving module, and the other end of the telescopic arm is connected to a foldable dust hood.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The foldable dust hood of the utility model has a foldable design so that the hood cloth can be in two forms: retracted or unfolded. When retracted, the occupied area is reduced; when unfolded, it can be covered on the work station to prevent smoke and dust from spreading and improve the smoke and dust capture rate. The device improves the effect of on-site smoke and dust collection and purification without affecting on-site work, and effectively solves the technical problem that on-site smoke and dust are easy to spread and difficult to capture.

[0027] The dust hood displacement structure of the utility model improves the convenience of using the dust hood through the swing arm structure and the telescopic cylinder, improves the mobility of the dust hood, and reduces the labor intensity of on-site workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of the foldable dust hood of the utility model;

[0029] Figure 2 This is a structural schematic diagram of the foldable dust hood of the utility model;

[0030] Figure 3 It is a schematic diagram of the foldable dust hood of the utility model in a collapsed state;

[0031] Figure 4 It is a schematic diagram of the contracted state of the folding frame in the utility model;

[0032] Figure 5 This is a structural schematic diagram of the mobile module in the utility model from the first perspective;

[0033] Figure 6 It is a structural schematic diagram of the second viewing angle of the mobile module in the utility model;

[0034] Figure 7 This utility model Figure 4 A partial enlarged view of the

[0035] Figure 8It is a schematic diagram of the unfolded state of the folding frame in the utility model;

[0036] Fig. 9 It is a partial enlarged view of the folding frame in the utility model;

[0037] Fig.10 This is a structural schematic diagram of the folding frame of the utility model;

[0038] Fig.11 This is a structural schematic diagram of the displacement structure in Embodiment 2 of the present utility model;

[0039] Fig.12 It is a structural schematic diagram of the swing arm structure of the utility model;

[0040] Fig.13 It is a structural schematic diagram of the displacement structure in Example 3 of the utility model.

[0041] The accompanying drawings are marked as follows: 1. upper cover plate; 2. lower cover plate; 3. folding frame; 31. upper arm; 32. upper middle arm; 33. upper forearm; 34. lower arm; 35. lower middle arm; 36. lower forearm; 4. cover cloth; 5. mobile module; 51. scissor-type telescopic arm; 52. first motor; 53. screw rod; 54. first horizontal plate; 55. screw rod nut; 56. second horizontal plate; 6. dust suction pipe fitting; 61. air duct elbow; 62. dust suction hose; 7. lamp; 8. swing arm structure; 81. first column; 82. vertical arm; 83. horizontal arm; 84. first gear; 85. second gear; 86. second motor; 9. telescopic cylinder; 10. connecting piece; 11. base; 12. second column; 13. drive module; 14. telescopic arm; 15. pull rod. DETAILED DESCRIPTION

[0042] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention. Example

[0043] like Figure 1-13As shown, the utility model is a foldable dust hood, comprising: an upper cover plate 1, a lower cover plate 2, a folding frame 3, a cover cloth 4, a movable module 5, and a dust suction device; the upper cover plate 1 is a hollow structure, connected to the dust suction device; the folding frame 3 is connected to the outside of the upper cover plate 1 and the lower cover plate 2, and the movable module 5 is connected between the upper cover plate 1 and the lower cover plate 2, and the folding frame 3 is driven to perform a contraction or expansion movement by moving the lower cover plate 2; when the welding work starts, the folding frame 3 and the cover cloth 4 are expanded by the movable module 5, and the welding station is covered in the cover cloth 4, the dust suction device is working, and the welding smoke is sucked out through the upper cover plate 1, so as to avoid the diffusion of smoke and improve the effect of on-site smoke collection and purification; when welding is not needed, the folding frame 3 and the cover cloth 4 are contracted by the movable module 5, so as to reduce the occupied space of the equipment and improve the space utilization rate. Specifically:

[0044] like Figure 5 As shown, the mobile module 5 includes: a scissor-type telescopic arm 51, one end of the scissor-type telescopic arm 51 is connected to the upper cover plate 1 through a first cross plate 54, and the other end of the scissor-type telescopic arm 51 is connected to the lower cover plate 2; a first motor 52 is connected to the lower cover plate 2, and the output shaft of the first motor 52 is transmission-connected to a screw rod 53, and the screw rod 53 passes through the first cross plate 54; a second cross plate 56 is connected to the middle part of the scissor-type telescopic arm 51, and a screw nut 55 slidably connected to the screw rod 53 is connected to the second cross plate 56. After the welding work starts, the first motor 52 drives the screw rod 53 to rotate, and the screw rod 53 and the screw nut 55 drive the scissors-type telescopic arm 51 to retract, and the lower cover plate 2 moves up accordingly, and the distance between it and the screw nut 55 is shortened, driving the folding frame 3 to unfold, and the cover cloth 4 is also opened and enters the working state; after the welding is completed, the first motor 52 drives the screw rod 53 to rotate in the opposite direction, and the screw rod 53 and the screw nut 55 drive the scissors-type telescopic arm 51 to unfold, and the lower cover plate 2 moves down accordingly, and the distance between it and the screw nut 55 is increased, driving the folding frame 3 to retract, and the cover cloth 4 is also retracted and enters the folded state.

[0045] In this embodiment, the upper cover plate 1 is connected to the dust suction device through a dust suction pipe 6, and the dust suction pipe 6 includes: a dust suction duct elbow 61 connected to the upper cover plate 1, and a dust suction hose 62 connecting the dust suction duct elbow 61 and the dust suction device; by providing the dust suction hose 62, it is ensured that the subsequent dust removal work will not be affected while the equipment is moved.

[0046] In this embodiment, the folding frame 3 includes: an upper arm 31, an upper middle arm 32, an upper forearm 33, a lower arm 34, a lower middle arm 35 and a lower forearm 36; one end of the upper arm 31 is hinged to the upper cover plate 1, and the other end is hinged to the middle of the lower arm 34; one end of the upper middle arm 32 is hinged to the middle of the upper arm 31, and the other end is hinged to one end of the upper forearm 33, and the other end of the upper forearm 33 is hinged to the middle of the lower forearm 36; one end of the lower arm 34 is hinged to the lower cover plate 2, and the other end is hinged to the middle of the upper forearm 33; one end of the lower middle arm 35 is hinged to the middle of the lower arm 34, and the other end is hinged to one end of the lower forearm 36. Figure 8-9 As shown, when the lower cover plate 2 moves upward, the gap between the upper cover plate 1 and the lower cover plate 2 becomes smaller, and the folding frame 3 unfolds outward to realize the unfolding of the cover cloth 4; Figure 4 As shown in FIG. 7 , when the lower cover plate 2 moves downward, the gap between the upper cover plate 1 and the lower cover plate 2 becomes larger, and the folding frame 3 contracts inwardly to realize the contraction of the cover cloth 4 .

[0047] In a feasible embodiment, Fig.10 As shown, the folding skeleton 3 includes: an upper arm 31 and a lower arm 34; when the lower cover plate 2 moves upward, the gap between the upper cover plate 1 and the lower cover plate 2 becomes smaller, and the lower arm 34 pushes the upper arm 31 to unfold, so as to realize the unfolding of the cover cloth 4; when the lower cover plate 2 moves downward, the gap between the upper cover plate 1 and the lower cover plate 2 becomes larger, and the lower arm 34 pulls the upper arm 31 to close, so as to realize the closing of the cover cloth 4.

[0048] like Figure 1-2 As shown, the cover cloth 4 is square or polygonal when unfolded, and its shape is adjusted according to the number of folding frames 3. When there are more folding frames 3, the cover cloth 4 tends to be round when unfolded.

[0049] like Fig. 9 As shown, a lamp 7 is provided on the lower wall of the lower arm 34 to ensure the working brightness inside the cover.

[0050] The working principle of this embodiment 1 is as follows: when the welding work starts, the folding frame 3 and the cover cloth 4 are unfolded by moving the module 5, and the welding station is covered in the cover cloth 4. The dust suction device works, and the welding smoke is sucked out through the upper cover plate 1, thereby avoiding the diffusion of smoke and improving the effect of on-site smoke collection and purification; when welding is not required, the folding frame 3 and the cover cloth 4 are retracted by moving the module 5, thereby reducing the space occupied by the equipment and improving space utilization. Example

[0051] Embodiment 2 is formed on the basis of embodiment 1. On the basis of the foldable dust hood of embodiment 1, a displacement structure is added to meet more usage conditions on site, making the foldable dust hood more flexible to use. Specifically:

[0052] It includes: a swing arm structure 8, a telescopic cylinder 9 connected to the swing arm structure 8, and the foldable dust hood connected to the telescopic end of the telescopic cylinder 9; a connecting piece 10 is provided on the upper cover plate 1, and the telescopic cylinder 9 is connected to the connecting piece 10. By swinging the swing arm structure 8, the position of the foldable dust hood can be adjusted in the horizontal direction, so that it can meet the use of more workstations. The position of the foldable dust hood can be adjusted in the vertical direction by the telescopic cylinder 9; when the welding work starts, the foldable dust hood can be lowered by the telescopic cylinder 9 to cover the workstation; when the welding work is finished, the foldable dust hood can be raised by the telescopic cylinder 9 to keep it away from the workstation, so as to facilitate the subsequent work.

[0053] In this embodiment, Fig.12 As shown, the swing arm structure 8 includes: a first column 81, a vertical arm 82 rotatably connected to the outside of the first column 81, a horizontal arm 83 connected to the vertical arm 82, a first gear 84 connected to the first column 81, a second gear 85 connected to the horizontal arm 83 and meshing with the first gear 84, and a second motor 86 drivingly connected to the second gear 85. The second motor 86 is connected to the horizontal arm 83 through a U-shaped frame, and its output shaft passes through the U-shaped frame and is connected to the second gear 85. When the foldable dust hood needs to be adjusted in the horizontal direction, the second motor 86 drives the second gear 85 to rotate, and the first gear 84 does not move, then the second gear 85 rotates while rotating along the first gear 84, thereby driving the horizontal arm 83 and the vertical plate to rotate around the first column 81, so as to achieve the position adjustment of the foldable dust hood in the horizontal direction.

[0054] like Figure 1-2 As shown, the connecting member 10 is a plate-like structure connected to the outside of the upper cover plate 1 , and there are two telescopic cylinders 9 , which are located on both sides of the dust suction air duct elbow 61 and connected to the plate-like connecting member 10 .

[0055] like Fig.11 As shown, the connecting member 10 is a frame-type structure, one end of which is connected to the outside of the upper cover plate 1 and covers the elbow 61 of the dust suction air duct. There is one telescopic cylinder 9 connected to the top of the connecting member 10 of the frame-type structure. Example

[0056] Embodiment 2 is formed on the basis of embodiment 1. On the basis of the foldable dust hood of embodiment 1, a displacement structure is added to meet more usage conditions on site, making the foldable dust hood more flexible to use. Fig.13 As shown, specifically:

[0057] The utility model comprises: a base 11, a second column 12 rotatably connected to the base 11, a telescopic arm 14 movably connected to the second column 12, and a pull rod 15 respectively hinged to the telescopic arm 14 and the second column 12; one end of the telescopic arm 14 is movably connected to the second column 12 through a driving module 13, and the other end of the telescopic arm 14 is connected to the foldable dust hood. Fig.13 As shown, when the welding work starts, the driving module 13 drives one end of the telescopic arm 14 to move upward, so that the telescopic arm 14 rotates counterclockwise around the pull rod 15, thereby unfolding and putting the foldable dust hood on the work station; when the welding work is finished, the driving module 13 drives one end of the telescopic arm 14 to move downward, so that the telescopic arm 14 rotates counterclockwise around the pull rod 15, thereby folding the telescopic arm 14 and the pull rod 15 to raise the foldable dust hood, so that it is away from the work station, which is convenient for subsequent work.

[0058] In this embodiment, the driving module 13 may be a screw driving module or other linear driving modules.

[0059] In this embodiment, the first gear is connected to the base 11, the end of the second column 12 is connected to a fixed plate, and a motor is connected to one side of the fixed plate. The output shaft of the motor passes through the fixed plate and is connected to the second gear, and the first gear and the second gear are meshed; when the motor is working, the second gear rotates around the first gear, thereby driving the second column 12 to rotate, so as to realize the horizontal position adjustment of the foldable dust hood.

[0060] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0061] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A foldable dust hood, characterized in that: include: An upper cover plate (1), a lower cover plate (2), a folding frame (3) connected to the outside of the upper cover plate (1) and the lower cover plate (2), and a cover cloth (4) connected to the folding frame (3); a movable module (5) is arranged between the upper cover plate (1) and the lower cover plate (2), and the movable module (5) drives the folding frame (3) to retract or unfold; the upper cover plate (1) is a hollow structure and is connected to a dust collection device; The mobile module (5) comprises: a scissor-type telescopic arm (51), one end of the scissor-type telescopic arm (51) is connected to the upper cover plate (1) via a first transverse plate (54), and the other end of the scissor-type telescopic arm (51) is connected to the lower cover plate (2); the lower cover plate (2) is connected to a first motor (52), the output shaft of the first motor (52) is connected to a screw rod (53), and the screw rod (53) passes through the first transverse plate (54); the middle part of the scissor-type telescopic arm (51) is connected to a second transverse plate (56), and the second transverse plate (56) is connected to a screw rod nut (55) slidably connected to the screw rod (53).

2. A foldable dust hood as claimed in claim 1, characterized in that: The upper cover plate (1) is connected to the dust suction device via a dust suction pipe (6), and the dust suction pipe (6) comprises: a dust suction air duct elbow (61) connected to the upper cover plate (1), and a dust suction hose (62) connected to the dust suction air duct elbow (61) and the dust suction device.

3. A foldable dust hood as claimed in claim 1, characterized in that: The cover cloth (4) is unfolded into a circular or polygonal structure.

4. A foldable dust hood as claimed in claim 1, characterized in that: A lamp (7) is connected inside the folding frame (3).

5. A foldable dust hood as claimed in claim 1, characterized in that: The folding frame (3) comprises an upper arm (31), an upper middle arm (32), an upper forearm (33), a lower arm (34), a lower middle arm (35) and a lower forearm (36); one end of the upper arm (31) is hinged to the upper cover plate (1), and the other end thereof is hinged to the middle part of the lower arm (34); one end of the upper middle arm (32) is hinged to the middle part of the upper arm (31), and the other end thereof is hinged to one end of the upper forearm (33), and the other end of the upper forearm (33) is hinged to the middle part of the lower forearm (36); one end of the lower arm (34) is hinged to the lower cover plate (2), and the other end thereof is hinged to the middle part of the upper forearm (33); one end of the lower middle arm (35) is hinged to the middle part of the lower arm (34), and the other end thereof is hinged to one end of the lower forearm (36).

6. A dust hood displacement structure, used to drive the foldable dust hood according to any one of claims 1 to 5 to move; characterized in that: The displacement structure comprises: a swing arm structure (8), and a telescopic cylinder (9) connected to the swing arm structure (8); a connecting piece (10) is provided on the upper cover plate (1), and a telescopic end of the telescopic cylinder (9) is connected to the connecting piece (10).

7. A dust hood displacement structure as claimed in claim 6, characterized in that: The swing arm structure (8) comprises: a first column (81), a vertical arm (82) rotatably connected to the outside of the first column (81), a horizontal arm (83) connected to the vertical arm (82), a first gear (84) connected to the first column (81), a second gear (85) connected to the horizontal arm (83) and meshing with the first gear (84), and a second motor (86) drivingly connected to the second gear (85).

8. A dust hood displacement structure as claimed in claim 6, characterized in that: The displacement structure comprises: a base (11), a second column (12) rotatably connected to the base (11), a telescopic arm (14) movably connected to the second column (12), and a pull rod (15) hinged to the telescopic arm (14) and the second column (12), respectively; one end of the telescopic arm (14) is movably connected to the second column (12) via a driving module (13), and the other end of the telescopic arm (14) is connected to the foldable dust hood.

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