阅读说明：本技术 一种湿度大且强光环境下使用的aoi检测机 (AOI (argon oxygen decarburization) detector used under high-humidity and high-light environment ) 是由 王昌华 曾巨湘 皮江红 张俊岭 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种湿度大且强光环境下使用的AOI检测机,涉及AOI检测机技术领域。包括机体和设置在机体顶部的矩形框,所述机体的底部开设有通孔,所述机体的底部转动连接有底座,所述矩形框的内部设置有控制机体转动的从动组件,所述矩形框的内部设置有对机体内部进行烘干的烘干装置,所述矩形框的内部设置有控制烘干装置的控制组件,所述从动组件包括液压仓,所述液压仓的右侧固定在矩形框的内壁上,所述液压仓与活塞活塞连接,通过设置的从动组件,当AOI检测机的显示屏幕正对光线时,AOI检测机可以进行转动,进而可以避免光线直接照射在AOI检测机的显示屏幕上,导致因工作人员看不清楚屏幕而造成的错误操作。(The invention discloses an AOI (automated optical inspection) detector used in a high-humidity and high-light environment, and relates to the technical field of AOI detectors. Including organism and the rectangle frame of setting at the organism top, the through-hole has been seted up to the bottom of organism, the bottom of organism is rotated and is connected with the base, the inside of rectangle frame is provided with control organism pivoted driven component, the inside of rectangle frame is provided with the drying device who dries to the organism inside, the inside of rectangle frame is provided with control drying device's control assembly, driven component includes the hydraulic pressure storehouse, the right side in hydraulic pressure storehouse is fixed on the inner wall of rectangle frame, hydraulic pressure storehouse and piston are connected, through the driven component that sets up, when AOI detects the display screen of machine just when light, AOI detects the machine and can rotate, and then can avoid light direct irradiation on the display screen of AOI detects the machine, lead to seeing the maloperation that clearly the screen caused because of the staff.)

1. The utility model provides an AOI detects machine that humidity is big and under highlight environment uses which characterized in that: including organism (1) and rectangle frame (5) of setting at organism (1) top, the through-hole has been seted up to the bottom of organism (1), the bottom of organism (1) is rotated and is connected with base (2), the inside of rectangle frame (5) is provided with control organism (1) pivoted driven subassembly (3), the inside of rectangle frame (5) is provided with drying device (4) of drying to organism (1) inside, the inside of rectangle frame (5) is provided with control assembly (7) of control drying device (4).

2. The AOI detector according to claim 1, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: the driven assembly (3) comprises a hydraulic chamber (31), the right side of the hydraulic chamber (31) is fixed on the inner wall of a rectangular frame (5), the hydraulic chamber (31) is connected with a piston (32) in a piston manner, the left side of the piston (32) is fixed with a push rod (33), the inner wall of the rectangular frame (5) is rotatably connected with a rotating wheel (34) and a gear A (35), the gear A (35) is fixed with a belt pulley (36), the belt pulley (36) is in transmission connection with a bevel gear A (37) through a transmission belt, the bevel gear A (37) is rotatably connected on the inner wall of the machine body (1), the bottom of the bevel gear A (37) is meshed with a bevel gear B (38), the bevel gear B (38) penetrates through a through hole in the bottom of the machine body (1) and is fixed with the machine body (1), the bevel gear B (38) is penetrated by a base (2) and is rotatably connected with the base (2), the left side of conical gear B (38) is provided with carries out spacing subassembly (6) to conical gear B (38), gear A (35) and gear C (39) meshing, gear C (39) rotate to be connected on the inner wall of rectangle frame (5).

3. The AOI detector according to claim 1, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: the drying device (4) comprises a dryer (41), the dryer (41) is fixed at the top of a rectangular frame (5), the dryer (41) is communicated with one end of a conveying pipe (42), the conveying pipe (42) penetrates through the top of the rectangular frame (5), the other end of the conveying pipe (42) is communicated with one end of a hose (43), the other end of the hose (43) is communicated with one end of an air guide pipe (44), the other end of the air guide pipe (44) penetrates through the bottom of the rectangular frame (5) and the top of the machine body (1) and is communicated with a suction head (45), the top of the air guide pipe (44) is fixed with the bottom of a connecting rod (46), the top of the connecting rod (46) is fixed with a rack (47), the right side of the rack (47) is penetrated by a sliding rod (48), the right side of the sliding rod (48) is fixed on the inner wall of the rectangular frame (5), and the top of the rack (47) is meshed with a gear B (49), gear B (49) rotate to be connected on slider (410), slider (410) slidable mounting is on the inner wall of rectangle frame (5), the left side of rack (47) is fixed with the one end of spring D (411), the other end of spring D (411) is fixed on the inner wall of rectangle frame (5).

4. The AOI detector according to claim 2, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: spacing subassembly (6) include horizontal pole (61), horizontal pole (61) are fixed on the inner wall of organism (1), the right side and inserted bar (62) of horizontal pole (61) are articulated, inserted bar (62) are fixed with the one end of torsional spring (63), the other end of torsional spring (63) is fixed on horizontal pole (61), be fixed with spacing piece (64) on horizontal pole (61).

5. The AOI detector according to claim 1, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: control assembly (7) include L type connecting rod (71), the bottom slidable mounting of L type connecting rod (71) is on the inner wall of rectangle frame (5), the left side of L type connecting rod (71) is fixed with the one end of spring A (72), the other end of spring A (72) is fixed on the inner wall of rectangle frame (5), L type connecting rod (71) is articulated with the one end of connecting rod (73), the other end and kelly (74) of connecting rod (73) are articulated, the bottom of kelly (74) is run through by branch (75), kelly (74) slidable mounting is on branch (75), the bottom of branch (75) is fixed on the inner wall of rectangle frame (5), kelly (74) is fixed with the one end of spring B (76), the other end of spring B (76) is fixed on the inner wall of rectangle frame (5).

6. The AOI detector according to claim 1, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: control assembly (7) are still including fixed block (77), fixed block (77) are run through by slide bar (48) and with slide bar (48) sliding connection, the right side of fixed block (77) is fixed with the one end of spring C (78), the other end of spring C (78) is fixed on the inner wall of rectangle frame (5), the top of fixed block (77) is fixed with the one end of L type pole (79), the other end of L type pole (79) is fixed on slider (410).

7. The AOI detector according to claim 2, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: the inner side of the rotating wheel (34) is provided with a ratchet wheel, the outer side of the belt pulley (36) is provided with a pawl, the rotating wheel (34) is fixed with one end of the spiral spring (8), and the other end of the spiral spring (8) is fixed on the inner wall of the rectangular frame (5).

8. The AOI detector according to claim 6, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: the bottom of the fixing block (77) is provided with a clamping groove.

9. The AOI detector according to claim 1, wherein the AOI detector is used in a high humidity and strong light environment, and comprises: rectangular through holes are formed in the top of the machine body (1) and the bottom of the rectangular frame (5), and sliding grooves are formed in the inner wall of the rectangular frame (5).

Technical Field

The invention relates to the technical field of AOI (automated optical inspection) machines, in particular to an AOI machine used in a high-humidity and high-light environment.

Background

AOI inspection equipment, also known as AOI optical automated inspection equipment, has now become an important inspection tool and process quality control tool for the electronics manufacturing industry to ensure product quality.

AOI detection equipment principle: during automatic detection, the AOI detection equipment automatically scans PCBA products through a high-definition CCD camera, acquires images, compares the detected points with qualified parameters in a database, detects defects on target products through image processing, and displays/marks the defects through a display or an automatic mark for maintenance personnel to repair and SMT engineering personnel to improve the process. The general flow of the AOI inspection equipment is the same, mostly by pattern recognition. That is, the standard digitized image stored in the AOI system is compared with the actually detected image, thereby obtaining the detection result.

Various different mounting errors and welding defects on the PCB are automatically detected by using a high-speed high-precision vision processing technology. The PCB board can range from a fine pitch high density board to a low density large size board, and can provide an on-line inspection scheme to improve production efficiency, and soldering quality. By using AOI as a defect reduction tool, errors are located and eliminated early in the assembly process to achieve good process control. Early detection of defects will avoid sending a bad board to a subsequent assembly stage, AOI will reduce repair costs and will avoid scrapping an unrepairable circuit board.

When using AOI detection machine to detect the PCB board under the highlight environment, the staff often can therefore see not clearly the screen, and then lead to correctly operating AOI detection machine, and often can the watering in some factory buildings, and then can cause humidity in the air great, inside the louvre entering AOI detection machine that the moisture can be seted up from the AOI detection machine, AOI detection machine inside electrical components's normal work causes serious influence, thereby can cause the trouble of AOI detection machine, can produce more potential safety hazard at any time, the conventional use drying-machine dries the operation to AOI detection machine inside, but because AOI detection machine is great, the drying-machine can only dry to inside certain department of AOI detection machine, and then can cause the insufficient problem of drying, in view of this, we have proposed the big AOI detection machine that uses under the highlight environment of humidity.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the AOI detector which is high in humidity and used in a strong light environment, and solves the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an AOI detects machine that humidity is big and under highlight environment used, includes the organism and sets up the rectangle frame at the organism top, the through-hole has been seted up to the bottom of organism, the bottom of organism is rotated and is connected with the base, the inside of rectangle frame is provided with the driven subassembly of control organism pivoted, the inside of rectangle frame is provided with the drying device who dries inside the organism, the inside of rectangle frame is provided with the control assembly of control drying device.

Preferably, the driven assembly comprises a hydraulic chamber, the right side of the hydraulic chamber is fixed on the inner wall of the rectangular frame, the hydraulic chamber is connected with a piston, the left side of the piston is fixed with a push rod, the inner wall of the rectangular frame is rotatably connected with a rotating wheel and a gear A, the gear A is fixed with a belt pulley, the belt pulley is in transmission connection with the bevel gear A through a transmission belt, the bevel gear A is rotationally connected on the inner wall of the machine body, the bottom of the bevel gear A is meshed with the bevel gear B, the bevel gear B penetrates through a through hole at the bottom of the machine body and is fixed with the machine body, the bevel gear B is penetrated through by the base and is rotationally connected with the base, the left side of bevel gear B is provided with the spacing subassembly that carries on spacingly to bevel gear B, gear A and gear C meshing, gear C rotates to be connected on the inner wall of rectangle frame.

Preferably, the drying device comprises a dryer fixed on the top of the rectangular frame, the dryer is communicated with one end of a conveying pipe, the conveying pipe penetrates through the top of the rectangular frame, the other end of the conveying pipe is communicated with one end of a hose, the other end of the hose is communicated with one end of the air duct, the other end of the air duct penetrates through the bottom of the rectangular frame and the top of the machine body and is communicated with the suction head, the top of the air duct is fixed with the bottom of the connecting rod, the top of the connecting rod is fixed with the rack, the right side of the rack is penetrated by the sliding rod, the right side of the sliding rod is fixed on the inner wall of the rectangular frame, the top of the rack is meshed with the gear B, the gear B is rotationally connected to a sliding block, the sliding block is slidably arranged on the inner wall of the rectangular frame, the left side of rack is fixed with spring D's one end, spring D's the other end is fixed on the inner wall of rectangle frame.

Preferably, the limiting assembly comprises a cross rod, the cross rod is fixed on the inner wall of the machine body, the right side of the cross rod is hinged to the inserting rod, the inserting rod is fixed to one end of a torsional spring, the other end of the torsional spring is fixed to the cross rod, and a limiting block is fixed to the cross rod.

Preferably, the control assembly includes L type connecting rod, the bottom slidable mounting of L type connecting rod is on the inner wall of rectangle frame, the left side of L type connecting rod is fixed with spring A's one end, spring A's the other end is fixed on the inner wall of rectangle frame, L type connecting rod is articulated with the one end of connecting rod, the other end and the kelly of connecting rod are articulated, the bottom of kelly is run through by branch, kelly slidable mounting is on branch, the bottom of branch is fixed on the inner wall of rectangle frame, the kelly is fixed with spring B's one end, spring B's the other end is fixed on the inner wall of rectangle frame.

Preferably, the control assembly is still including the fixed block, the fixed block is run through by the slide bar and with slide bar sliding connection, the right side of fixed block is fixed with spring C's one end, spring C's the other end is fixed on the inner wall of rectangle frame, the top of fixed block is fixed with the one end of L type pole, the other end of L type pole is fixed on the slider.

Preferably, a ratchet wheel is arranged on the inner side of the rotating wheel, a pawl is arranged on the outer side of the belt pulley, the rotating wheel is fixed with one end of a spiral spring, and the other end of the spiral spring is fixed on the inner wall of the rectangular frame.

Preferably, the bottom of the fixing block is provided with a clamping groove.

Preferably, the top of the machine body and the bottom of the rectangular frame are both provided with rectangular through holes, and the inner wall of the rectangular frame is provided with a sliding groove.

(III) advantageous effects

The invention provides an AOI detector which is high in humidity and used in a strong light environment. The method has the following beneficial effects:

(1) the AOI who uses under this humidity is big and the highlight environment detects machine, through the driven subassembly that sets up, when AOI detects the display screen of machine just when light, AOI detects the machine and can rotate, and then can avoid light direct irradiation to lead to seeing because of the staff not clearly to be the maloperation that the screen caused, the effectual detection precision that improves the PCB board on the display screen that detects the machine.

(2) The AOI detection machine that uses under this humidity is big and highlight environment, under control assembly and the drying device cooperation through setting up, can control the suction head and remove about the organism is inside, can carry out better stoving to the organism inside, has avoided the moisture to get into inside the organism, causes the damage of the inside electrical components of organism.

(3) The AOI detector is high in humidity and used in a strong light environment. Through the spacing subassembly that sets up, can be so that the organism can only be towards a antiport, can avoid the organism to produce the rotation because of the exogenic action down, lead to the problem of light direct irradiation on the organism screen.

Drawings

FIG. 1 is a schematic diagram of an overall apparatus according to the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is an enlarged view of B in FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the rear view of the wheel, gear A and pulley of the present invention;

FIG. 6 is a schematic view of the connection structure of the gear B and the sliding block of the present invention;

FIG. 7 is a schematic top view of the spacing assembly of the present invention;

FIG. 8 is a schematic view of the connection structure of the rectangular frame, the runner and the volute spring according to the present invention;

FIG. 9 is a schematic view of the sliding groove structure of the inner wall of the rectangular frame according to the present invention;

FIG. 10 is a schematic view of the connecting structure of the L-shaped connecting rod and the connecting rod of the present invention;

fig. 11 is a schematic structural diagram of the hydraulic pressure cabin of the invention.

In the figure: 1. a body; 2. a base; 3. a driven assembly; 31. a hydraulic pressure cabin; 32. a piston; 33. a push rod; 34. a rotating wheel; 35. a gear A; 36. a belt pulley; 37. a bevel gear A; 38. a bevel gear B; 39. a gear C; 4. a drying device; 41. a dryer; 42. a delivery pipe; 43. a hose; 44. an air duct; 45. a suction head; 46. a connecting rod; 47. a rack; 48. a slide bar; 49. a gear B; 410. a slider; 411. a spring D; 5. a rectangular frame; 6. a limiting component; 61. a cross bar; 62. inserting a rod; 63. a torsion spring; 64. a limiting block; 7. a control component; 71. an L-shaped connecting rod; 72. a spring A; 73. a connecting rod; 74. a clamping rod; 75. a strut; 76. a spring B; 77. a fixed block; 78. a spring C; 79. an L-shaped rod; 8. a volute spring.

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.

Referring to fig. 1 to 11, the present invention provides a technical solution: the utility model provides an AOI detects machine that humidity is big and under highlight environment used, includes organism 1 and sets up the rectangle frame 5 at organism 1 top, and the rectangle through-hole has all been seted up to the top of organism 1 and the bottom of rectangle frame 5, can make air duct 44 and suction head 45 remove about the top of organism 1 and the bottom of rectangle frame 5. The inner wall of the rectangular frame 5 is provided with a sliding groove, so that the sliding block 410 can move left and right on the inner wall of the rectangular frame 5 with the gear B49, and the gear B49 is meshed with or disengaged from the gear C39. The through-hole has been seted up to organism 1's bottom, and organism 1's bottom is rotated and is connected with base 2, and the inside of rectangle frame 5 is provided with control organism 1 pivoted driven component 3, and the inside of rectangle frame 5 is provided with the drying device 4 of drying to organism 1 inside, and the inside of rectangle frame 5 is provided with control assembly 7 of control drying device 4.

In this embodiment, the driven assembly 3 includes the hydraulic pressure storehouse 31, and the right side of the hydraulic pressure storehouse 31 is fixed on the inner wall of the rectangular frame 5, and the inside of the hydraulic pressure storehouse 31 is filled with carbon dioxide gas, and when the machine body 1 and the rectangular frame 5 are just facing to the sunshine, because the sunshine directly shines, the carbon dioxide gas inside the hydraulic pressure storehouse 31 is heated and expanded to push the piston 32 and the push rod 33 to move leftwards. The hydraulic chamber 31 is connected with the piston 32 by a piston, the left side of the piston 32 is fixed with the push rod 33, the inner wall of the rectangular frame 5 is rotatably connected with a rotating wheel 34 and a gear A35, the gear A35 is fixed with a belt pulley 36, the belt pulley 36 is in transmission connection with a bevel gear A37 by a transmission belt, the bevel gear A37 is rotatably connected with the inner wall of the machine body 1, the bottom of the bevel gear A37 is meshed with a bevel gear B38, the bevel gear B38 penetrates through a through hole at the bottom of the machine body 1 and is fixed with the machine body 1, the bevel gear B38 is penetrated by the base 2 and is rotatably connected with the base 2, the left side of the bevel gear B38 is provided with a limiting component 6 for limiting the bevel gear B38, the gear A35 is meshed with a gear C39, the gear C39 is rotatably connected with the inner wall of the rectangular frame 5, the inner side of the rotating wheel 34 is provided with a ratchet, the outer side of the belt pulley 36 is provided with a pawl, the rotating wheel 34 is fixed with one end of a spiral spring 8, the other end of the spiral spring 8 is fixed on the inner wall of the rectangular frame 5, a baffle is fixed on the top of the rotating wheel 34, and when the push rod 33 moves leftwards to push the baffle, the rotating wheel 34 can rotate anticlockwise for a certain angle. When the rotating wheel 34 rotates clockwise, the ratchet wheel on the inner side of the rotating wheel 34 cannot be clamped by the pawl on the outer side of the belt pulley 36, so that the rotating wheel 34 cannot drive the belt pulley 36 to rotate, and when the rotating wheel 34 rotates anticlockwise, the ratchet wheel on the inner side of the rotating wheel 34 is clamped by the pawl on the outer side of the belt pulley 36, and the rotating wheel 34 can drive the belt pulley 36 to rotate anticlockwise. When the push rod 33 is not against the baffle any more, the runner 34 is reset by clockwise rotation under the action of the volute spring 8.

In this embodiment, the drying device 4 includes a dryer 41, the dryer 41 is fixed on the top of the rectangular frame 5, the dryer 41 is connected to one end of a conveying pipe 42, the conveying pipe 42 penetrates through the top of the rectangular frame 5, the other end of the conveying pipe 42 is connected to one end of a hose 43, the other end of the hose 43 is connected to one end of an air duct 44, and the hose 43 is a stretchable pipe. The other end of the air duct 44 penetrates through the bottom of the rectangular frame 5 and the top of the machine body 1 and is communicated with the suction head 45, the top of the air duct 44 is fixed with the bottom of the connecting rod 46, the top of the connecting rod 46 is fixed with the rack 47, the right side of the rack 47 is penetrated by the sliding rod 48, the right side of the sliding rod 48 is fixed on the inner wall of the rectangular frame 5, the top of the rack 47 is meshed with the gear B49, the gear B49 is rotatably connected onto the sliding block 410, the sliding block 410 is slidably mounted on the inner wall of the rectangular frame 5, the left side of the rack 47 is fixed with one end of the spring D411, and the other end of the spring D411 is fixed on the inner wall of the rectangular frame 5.

In this embodiment, spacing subassembly 6 includes horizontal pole 61, and horizontal pole 61 is fixed on organism 1's inner wall, and horizontal pole 61's right side is articulated with inserted bar 62, and inserted bar 62 is fixed with torsional spring 63's one end, and torsional spring 63's the other end is fixed on horizontal pole 61, is fixed with spacing piece 64 on horizontal pole 61, can carry on spacingly to conical tooth wheel B38 for conical tooth wheel B38 can not reverse, and then guarantees that organism 1 can not reset because of the reversal under the exogenic action.

In this embodiment, the control assembly 7 includes an L-shaped link 71, the bottom of the L-shaped link 71 is slidably mounted on the inner wall of the rectangular frame 5, the left side of the L-shaped link 71 is fixed to one end of a spring a72, the other end of a spring a72 is fixed on the inner wall of the rectangular frame 5, the L-shaped link 71 is hinged to one end of a link 73, the other end of the link 73 is hinged to a clip rod 74, the bottom of the clip rod 74 is penetrated by a support rod 75, the clip rod 74 is slidably mounted on the support rod 75, the bottom of the support rod 75 is fixed on the inner wall of the rectangular frame 5, the clip rod 74 is fixed to one end of a spring B76, the other end of the spring B76 is fixed on the inner wall of the rectangular frame 5, the top of the clip rod 74 is provided with a chamfered surface, when the fixing block 77 is abutted by the rack 47 to move rightwards, the fixing block 77 abuts against the chamfered surface of the clip rod 74, the fixing block 77 pushes the clip rod 74 to move downwards, when the slot at the bottom of the fixing block 77 moves to the position of the clip rod 74, under the action of the spring B76, the locking rod 74 moves upward and is inserted into the locking groove at the bottom of the fixing block 77 to limit the fixing block 77. Fixed block 77 is run through by slide bar 48 and with slide bar 48 sliding connection, the right side of fixed block 77 is fixed with the one end of spring C78, the other end of spring C78 is fixed on the inner wall of rectangle frame 5, the top of fixed block 77 is fixed with the one end of L type pole 79, the other end of L type pole 79 is fixed on slider 410, the draw-in groove has been seted up to the bottom of fixed block 77, realize spacing or remove spacing to fixed block 77 through cooperation kelly 74.

When the machine is in use, when the display screen of the machine body 1 is directly irradiated by sunlight, the carbon dioxide gas inside the hydraulic chamber 31 is heated and expanded due to the certain temperature of the sunlight, so that the piston 32 and the push rod 33 are pushed to move leftwards, and when the push rod 33 moves leftwards to push the baffle, the rotating wheel 34 can rotate anticlockwise for a certain angle. When the rotating wheel 34 rotates anticlockwise, the ratchet wheel on the inner side of the rotating wheel 34 is clamped by the pawl on the outer side of the belt pulley 36, the rotating wheel 34 can drive the belt pulley 36 to rotate anticlockwise together, the belt pulley 36 drives the bevel gear A37 to rotate through a transmission belt, the bevel gear A37 drives the bevel gear B38 to rotate, the bevel gear B38 is fixed with the machine body 1 and is connected to the base 2 in a rotating mode, the bevel gear B38 drives the machine body 1 to rotate, and then sunlight can not directly irradiate on the display screen of the machine body 1 to affect normal use of workers.

When the belt pulley 36 rotates counterclockwise and drives the gear A35 to rotate counterclockwise, the gear C39 engaged with the gear A35 rotates clockwise, the gear C39 drives the gear B49 to rotate counterclockwise, the gear B49 drives the rack 47 to move rightward on the sliding rod 48, and the rack 47 drives the air duct 44 and the sucker 45 to move rightward through the connecting rod 46. When the rack 47 moves to the position of the fixing block 77, the fixing block 77 is pushed rightward, the fixing block 77 pulls the slider 410 to move rightward through the L-shaped rod 79, so that the gear B49 and the gear C39 are not meshed any more, meanwhile, the fixing block 77 abuts against the oblique cutting surface of the clamping rod 74, the fixing block 77 pushes the clamping rod 74 to move downward, and when the clamping groove at the bottom of the fixing block 77 moves to the position of the clamping rod 74, the clamping rod 74 moves upward and is inserted into the clamping groove at the bottom of the fixing block 77 to limit the fixing block 77 under the action of the spring B76.

After the gear B49 is not meshed with the gear C39 any more, the gear B49 is changed to be not limited any more, the rack 47 moves leftwards under the action of the spring D411, after the rack 47 moves leftwards and returns to the original position, the rack 47 pushes the L-shaped connecting rod 71 to move leftwards, the L-shaped connecting rod 71 pulls the clamping rod 74 to move downwards through the connecting rod 73, so that the clamping rod 74 exits from the clamping groove at the bottom of the fixing block 77, the fixing block 77 moves leftwards and returns to the original position under the action of the spring C78, the fixing block 77 drives the L-shaped rod 79 and the sliding block 410 to move leftwards and return to the original position, the sliding block 410 drives the gear B49 to be meshed with the gear C39 again, and further the suction head 45 can move leftwards and rightwards in the machine body 1 to dry the interior of the machine body 1 better.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.