Ventilation cabinet for coating plate

Abstract

The utility model relates to a ventilation cabinet for a coating plate, which is provided with a cabinet body and an inner cavity, and a first cabinet door and a second cabinet door are fixedly arranged on the cabinet body; a placement platform and a ventilation assembly are arranged in the inner cavity, the ventilation assembly comprises a driving motor, a guide sliding block, a top lifting air cylinder, a connecting plate and ventilation rod sets, each ventilation rod set comprises a plurality of ventilation rods and air blowing nozzles, a ventilation channel is formed in each ventilation rod, and each air blowing nozzle communicates with the ventilation channel; a cold air pump and a warm air pump are fixedly arranged on the guide sliding block, the reducing assembly comprises a reducing air cylinder, a reducing sliding groove and a reducing sliding block, the reducing sliding block comprises a sliding part and a telescopic part, telescopic grooves are formed in the upper end and the lower end of the sliding part, and reset springs are arranged in the telescopic grooves; each variable-diameter sliding block is driven by the variable-diameter air cylinder to stretch into the ventilation channel and change the inner diameter of the ventilation channel. The device is ingenious in structure, convenient and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of paint board ventilation, especially paint board ventilation cabinet. BACKGROUND

[0002] Laboratory ventilation is an indispensable part in laboratory design. In order to make laboratory staff not inhale or swallow some toxic, pathogenic or toxic unknown chemical substances and organisms, the laboratory should have good ventilation. In order to prevent the absorption of some steam, gas and particles (smoke, soot, dust and gas suspension), the pollutants should be removed by ventilation cabinet, ventilation hood or local ventilation method.

[0003] After the paint board is sprayed, it needs to be put into the paint board for drying, and the toxic substances or particles in the paint board are removed. However, the existing ventilation cabinet has single air volume, air speed and blowing area. When part of the existing paint board needs to be dried or removed, the air volume and air speed need to be adjusted. However, it is difficult to adjust the air volume and air speed in the existing ventilation cabinet, and the applicability is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing paint board ventilation cabinet, which has a clever structure, can comprehensively ventilate and remove impurities of the paint board, and can also adjust the air speed and air pressure according to the paint board, which is efficient and convenient.

[0005] The utility model discloses a cabinet body, and the inner cavity is arranged in the cabinet body, be equipped with first cabinet door and the second cabinet door of sliding setting on the cabinet body, be equipped with the placing platform for placing paint board and the ventilation component that can blow and dry paint board on the placing platform in the inner cavity, the ventilation component includes the drive motor fixed on the cabinet body, the guide sliding block that is horizontally slidingly arranged in the inner cavity under the drive of drive motor, the top lift cylinder fixed on the guide sliding block, the connecting plate fixed on the telescopic end of top lift cylinder and the ventilation pole group that is opposite and set up on the connecting plate, each ventilation pole group includes a plurality of ventilation poles that are evenly distributed on the connecting plate along the extension direction of connecting plate and the air blowing nozzle fixed on the bottom of each ventilation pole, and each ventilation pole in the ventilation pole group corresponds to each ventilation pole in another ventilation pole group, two air inlet channels that correspond to each ventilation pole group are equipped on the connecting plate, and each air inlet channel is parallelly arranged, each ventilation pole is equipped with ventilation channel, each ventilation channel is communicated with corresponding air inlet channel, each air blowing nozzle is communicated with ventilation channel, the cold gas pump and the warm gas pump are fixed on the guide sliding block, the cold gas pump is communicated with any air inlet channel through the pipe body, the warm gas pump is communicated with another air inlet channel through the pipe body, the variable diameter assembly that is opposite and changes the inner diameter of ventilation channel is equipped in each ventilation channel, the variable diameter assembly includes the variable diameter cylinder fixed on the ventilation pole, the variable diameter sliding groove set up on the inner wall of each ventilation channel and the variable diameter sliding block slidingly arranged in the variable diameter sliding groove under the drive of variable diameter cylinder, the sliding direction of variable diameter sliding block is perpendicular to the extension direction of ventilation channel, the variable diameter sliding block includes the sliding part and the telescopic part slidingly arranged on the upper and lower ends of sliding part, the upper and lower ends of sliding part are equipped with telescopic grooves, and the extension direction of each telescopic groove is parallelly arranged with the extension direction of ventilation channel, the reset spring is equipped in the telescopic groove, and the two ends of reset spring are fixedly connected with telescopic groove and telescopic part respectively, the end of each telescopic part away from telescopic groove is pressed and fitted on the side wall of variable diameter sliding groove, and each variable diameter sliding block is driven into ventilation channel and changes the inner diameter of ventilation channel through variable diameter cylinder.

[0006] Further, the upper and lower ends of the variable diameter sliding groove are equipped with guide inclined surfaces, each telescopic part is equipped with corresponding pressing inclined surface on each guide inclined surface, and the pressing inclined surface on each telescopic part is pressed on the guide inclined surface through the continuous force of each reset spring on telescopic part.

[0007] Further, the driving end of the driving motor is fixedly provided with a horizontally arranged reciprocating screw rod, the cabinet is fixedly provided with a guide rod arranged in parallel with the reciprocating screw rod, the guide block is provided with a connecting screw hole matched with the reciprocating screw rod, the guide block is provided with a through hole through which the guide rod passes, the guide block is slidably connected to the guide rod through the driving of the driving motor on the reciprocating screw rod and the threaded connection of the reciprocating screw rod and the connecting screw hole, the inner cavity is fixedly provided with top sliding rails arranged in parallel, the top of the inner cavity of each top sliding rail is provided with a top sliding rail, the extension direction of each top sliding rail is arranged in parallel with the guide rod, a plurality of telescopic rods are arranged between the top sliding rails and the connecting plate, the telescopic rod comprises a telescopic base and a rod portion slidably arranged on the telescopic base, the upper end of each telescopic base is provided with a top sliding block, each rod portion is fixedly arranged on the connecting plate, and the telescopic rod is slidably connected to the upper end of the inner cavity through the cooperation of the top sliding block and the top sliding rail.

[0008] Further, the placing platform is provided with a first positioning assembly arranged oppositely and capable of positioning one end of the paint plate, and a second positioning assembly arranged oppositely and capable of positioning the other end of the paint plate, the first positioning assembly comprises a first sliding rail fixedly arranged on the placing platform, a first air cylinder fixedly arranged on the placing platform, a first sliding block slidably arranged on the first sliding rail under the driving of the first air cylinder, a first lifting air cylinder fixedly arranged on the first sliding block, a first lifting plate fixedly arranged on the telescopic end of the first lifting air cylinder, a first pressing air cylinder fixedly arranged on the first lifting plate, a first moving block fixedly arranged on the telescopic end of the first pressing air cylinder, and a first positioning frame rotatably connected to the first moving block and capable of pressing and clamping one end of the paint plate, the second positioning assembly comprises a second sliding rail fixedly arranged on the placing platform, a second air cylinder fixedly arranged on the placing platform, a second sliding block slidably arranged on the second sliding rail under the driving of the second air cylinder, a second lifting air cylinder fixedly arranged on the second sliding block, a second lifting plate fixedly arranged on the telescopic end of the second lifting air cylinder, a second pressing air cylinder fixedly arranged on the second lifting plate, a second moving block fixedly arranged on the telescopic end of the second pressing air cylinder, and a second positioning frame rotatably connected to the second moving block and capable of pressing and clamping one end of the paint plate, the first sliding rail and the second sliding rail are arranged in parallel and perpendicularly to the guide rod, the sliding directions of the first moving block and the second moving block are arranged in parallel to the extension direction of the guide rod, each first positioning frame is arranged oppositely, each second positioning frame is arranged oppositely, each first positioning frame is pressed on the paint plate through the driving of each first pressing air cylinder on the first moving block, and each second positioning frame is pressed on the paint plate through the driving of each second pressing air cylinder on the second moving block.

[0009] Further, each first positioning frame and each second positioning frame comprises a pressing bottom plate with a cross section in the shape of "L", and a pressing top plate slidingly arranged on the pressing frame, the pressing bottom plate is provided with a mounting groove, a fixing cylinder is mounted in the mounting groove, the telescopic end of the fixing cylinder is fixed on the pressing top plate, a plurality of upper guide rods are arranged on the pressing bottom plate, the pressing top plate is provided with a guide groove corresponding to each upper guide rod, and the pressing top plate is pressed on the pressing bottom plate through the driving of the fixing cylinder and the sliding cooperation of each upper guide rod and the corresponding guide groove.

[0010] Further, each first positioning frame and each second positioning frame are provided with a rotating shaft, each rotating shaft is provided with a limiting plate, each rotating shaft is provided with a rotating hole matched with the rotating shaft, and each rotating hole is provided with a limiting groove matched with the limiting plate, the diameter of the limiting plate is greater than the diameter of the rotating shaft, and the diameter of the limiting groove is greater than the diameter of the rotating hole, the first positioning frame is rotationally connected with the first moving block through the cooperation of the rotating shaft and the rotating hole and the cooperation of the limiting plate and the limiting groove, and the second positioning frame is rotationally connected with the second moving block through the cooperation of the rotating shaft and the rotating hole and the cooperation of the limiting plate and the limiting groove.

[0011] Further, each rotating shaft is a polygonal damping rotating shaft, and the rotating hole is a polygonal damping rotating hole, the first positioning frame is formed in damping cooperation with the first moving block through the cooperation of each rotating shaft and the rotating hole, and the second positioning frame is formed in damping cooperation with the second moving block through the cooperation of each rotating shaft and the rotating hole.

[0012] Further, the second cabinet door is fixedly provided with a handle.

[0013] The utility model has the positive effect that: (1) the utility model sets up ventilation assembly in the inner chamber, the top lifting cylinder drives the connecting plate to move to the coating plate, and the variable diameter assembly in the ventilation channel is used for controlling the inner diameter of the ventilation channel, in the process of variable diameter, each variable diameter cylinder drives the variable diameter sliding block to slide in the variable diameter sliding slot, each telescopic part is pressed on the side wall of the variable diameter sliding slot through the continuous force of the reset spring on the telescopic part, each variable diameter sliding block is driven by the variable diameter cylinder to extend into the ventilation channel and change the inner diameter of the ventilation channel, the ventilation rod increases or reduces the inner diameter through the cooperation of each variable diameter sliding block and the variable diameter sliding slot, so that the pressure in each ventilation channel is changed, the wind speed in the ventilation channel in the ventilation rod is changed, each ventilation rod can adjust the wind speed and the air pressure in different areas of the coating plate, so that the drying and impurity removal of each area are adapted, the utility model has good adjustability and applicability, the structure is ingenious, convenient and practical.

[0014] (2) The utility model discloses a guide inclined plane is provided on the upper and lower end surfaces of the variable-diameter chute, and each telescopic part is tightly pressed against the variable-diameter chute through the cooperation of the guide inclined plane and the pressing inclined plane, thereby effectively ensuring the sealing between the variable-diameter sliding block and the variable-diameter chute during sliding, and the utility model is safe and practical.

[0015] (3) The utility model discloses a reciprocating screw rod is fixedly arranged on the output end of the driving motor, the cooperation of the reciprocating screw rod and the connecting screw hole and the cooperation of the guide sliding block and the guide rod ensure the stability of the guide sliding block during movement, and the stability of the connecting plate during movement is further ensured through the arrangement of multiple telescopic rods, and the utility model is stable and practical.

[0016] (4) The utility model discloses a first positioning assembly and a second positioning assembly are arranged, each first positioning frame is pressed against the coating plate through the driving of each first pressing cylinder on the first moving block, each second positioning frame is pressed against the coating plate through the driving of each second pressing cylinder on the second moving block, the stability of the pressing of the first positioning frame and the second positioning frame on the coating plate is effectively ensured, the coating plate is turned over through the driving of the first cylinder on the first sliding block, the driving of the first lifting cylinder on the first lifting plate and the driving of the second cylinder on the second sliding block, thereby ensuring comprehensive and efficient spraying on the coating plate, and the utility model is convenient and practical.

[0017] (5) The utility model discloses a clamping cylinder is arranged on the pressing bottom plate, the clamping cylinder ensures the stable pressing of the pressing top plate on the coating plate through the driving of the pressing top plate and the cooperation of the upper guide rod and the guide groove, and the utility model is stable and practical.

[0018] (6) The utility model discloses a pivot and a limiting plate are arranged on the first positioning frame and the second positioning frame, a rotating hole and a limiting slot are arranged on the first moving block and the second moving block, each first positioning frame and second positioning frame are rotatably connected with the first moving block and the second moving block through the cooperation of the pivot and the rotating hole and the cooperation of the limiting plate and the limiting slot, thereby ensuring the smoothness of the coating plate during rotation, and the utility model is efficient and convenient.

[0019] (7) The utility model discloses a damping pivot is arranged on the pivot, the cooperation of the pivot and the rotating hole can ensure the smoothness of the pivot and the rotating hole during rotation, and can also ensure the stability of the pivot and the rotating hole after rotation, and the utility model is safe and practical.

[0020] (8) The utility model discloses a handle is arranged on the second cabinet door, thereby conveniently enabling an operator to smoothly open or close the second cabinet door, and the utility model is convenient and practical. DRAWINGS

[0021] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail below according to specific embodiments and in combination with the drawings, wherein

[0022] Figure 1 It is overall structure schematic view of the ventilation cabinet for paint plate in the utility model;

[0023] Figure 2 It is sectional view of the connecting structure of connecting plate and each ventilation rod in the utility model;

[0024] Figure 3 It is sectional view of the overall structure of ventilation rod in the utility model;

[0025] Figure 4 It is overall structure schematic view of the variable-diameter sliding block in the utility model;

[0026] Figure 5 It is overhead view of the overall structure of first positioning assembly and second positioning assembly in the utility model placement platform;

[0027] Figure 6 It is overall structure schematic view of the first positioning assembly in the utility model;

[0028] Figure 7 It is overall structure schematic view of the second positioning assembly in the utility model;

[0029] Figure 8 It is overall structure schematic view of the rotating hole on the first moving block or second moving block in the utility model;

[0030] Figure 9 It is sectional view of the connecting structure of rotating shaft and rotating hole in the utility model;

[0031] Figure 10 It is sectional view of the overall structure of first positioning frame or second positioning frame in the utility model. Specific implementation

[0032] See Figures 1 to 10The utility model discloses a cabinet body 1, and the inner chamber of setting in the cabinet body 1, first cabinet door 11 is fixed with on the cabinet body 1, and the second cabinet door 12 of sliding setting on the cabinet body 1, be equipped with the placing platform 13 for placing paint board in the inner chamber, and the ventilation subassembly 2 of the paint board on placing platform 13 can be blown and dried, the ventilation subassembly 2 includes the drive motor 21 of being fixed in the cabinet body 1, the guide sliding block 23 of horizontal sliding setting in the inner chamber under the drive of drive motor 21, the top lift cylinder 24 of being fixed in the guide sliding block 23, the connecting plate 25 of being fixed in the telescopic end of top lift cylinder 24, and the ventilation pole group of being opposite and setting on the connecting plate 25, each ventilation pole group includes a plurality of ventilation pole 26 evenly distributed on the connecting plate 25 along the extension direction of connecting plate 25, and the air blowing nozzle 27 of being fixed in each ventilation pole 26 bottom, each ventilation pole 26 in ventilation pole group and each ventilation pole 26 in another ventilation pole group correspond one to one, the connecting plate 25 is equipped with two air inlet channels 251 corresponding to each ventilation pole group one to one, and each air inlet channel 251 is parallelly arranged, and each ventilation pole 26 is equipped with ventilation channel 261, and each ventilation channel 261 is communicated with corresponding air inlet channel 251, and each air blowing nozzle 27 is communicated with ventilation channel 261, the cold gas pump 28 and the warm gas pump 29 are fixed on the guide sliding block 23, the cold gas pump 28 is communicated with any air inlet channel 251 through the pipe body, the warm gas pump 29 is communicated with another air inlet channel 251 through the pipe body, and the variable diameter assembly 6 of being opposite and setting and changing the inner diameter of ventilation channel 261 is equipped in each ventilation channel 261, the variable diameter assembly 6 includes the variable diameter cylinder 61 of being fixed on the ventilation pole 26, the variable diameter sliding groove 62 of setting on the inner wall of each ventilation channel 261, and the variable diameter sliding block 63 of sliding setting in the variable diameter sliding groove 62 under the drive of variable diameter cylinder 61, the sliding direction of variable diameter sliding block 63 is perpendicular to the extension direction of ventilation channel 261, the variable diameter sliding block 63 includes the sliding part 631, and the telescopic part 632 of sliding setting in the upper and lower ends of sliding part 631, the upper and lower ends of sliding part 631 are equipped with telescopic groove 65, and the extension direction of each telescopic groove 65 is parallelly arranged with the extension direction of ventilation channel 261, the telescopic groove 65 is equipped with reset spring 66, and the two ends of reset spring 66 are fixedly connected with telescopic groove 65 and telescopic part 632 respectively, one end of each telescopic part 632 away from telescopic groove 65 is pressed and fitted on the side wall of variable diameter sliding groove 62, and each variable diameter sliding block 63 is driven into ventilation channel 261 and changes the inner diameter of ventilation channel 261 through variable diameter cylinder 61.

[0033] The upper and lower ends of variable diameter sliding groove 62 are equipped with guide inclined plane 64, each telescopic part 632 is equipped with corresponding pressing inclined plane 67 of each guide inclined plane 64, and the pressing inclined plane 67 on each telescopic part 632 is pressed on guide inclined plane 64 through the continuous force of each reset spring 66 on telescopic part 632.

[0034] The driving end of the driving motor 21 is fixedly provided with a horizontally arranged reciprocating screw rod 22, the cabinet 1 is fixedly provided with a guide rod 16 arranged in parallel with the reciprocating screw rod 22, the guide sliding block 23 is provided with a connecting screw hole matched with the reciprocating screw rod 22, the guide sliding block 23 is provided with a through hole through which the guide rod 16 passes, the guide sliding block 23 is slidably connected on the guide rod 16 through the driving of the driving motor 21 on the reciprocating screw rod 22 and the thread cooperation of the reciprocating screw rod 22 and the connecting screw hole, the inner cavity is fixedly provided with top sliding rails 14 arranged in parallel, the inner cavity of each top sliding rail 14 is arranged at the top of the inner cavity, the extension direction of each top sliding rail 14 is arranged in parallel with the guide rod 16, a plurality of telescopic rods 3 are arranged between the top sliding rails 14 and the connecting plate 25, the telescopic rod 3 comprises a telescopic base 31 and a rod part 32 slidably arranged on the telescopic base 31, the upper end of each telescopic base 31 is provided with a top sliding block 15, each rod part 32 is fixedly arranged on the connecting plate 25, and the telescopic rod 3 is slidably connected with the upper end of the inner cavity through the cooperation of the top sliding block 15 and the top sliding rail 14.

[0035] The placing platform 13 is provided with the first positioning assembly 4 oppositely arranged and capable of positioning one end of the paint plate, and the second positioning assembly 5 oppositely arranged and capable of positioning the other end of the paint plate, the first positioning assembly 4 comprises the first sliding rail 42 fixed on the placing platform 13, the first air cylinder 41 fixed on the placing platform 13, the first sliding block 43 slidingly arranged on the first sliding rail 42 under the drive of the first air cylinder 41, the first lifting air cylinder 44 fixed on the first sliding block 43, the first lifting plate 45 fixed on the extension end of the first lifting air cylinder 44, the first pressing air cylinder 40 fixed on the first lifting plate 45, the first moving block 46 fixed on the extension end of the first pressing air cylinder 40, and the first positioning frame 47 rotatably connected on the first moving block 46 and capable of pressing and clamping one end of the paint plate, the second positioning assembly 5 comprises the second sliding rail 52 fixed on the placing platform 13, the second air cylinder 51 fixed on the placing platform 13, the second sliding block 53 slidingly arranged on the second sliding rail 52 under the drive of the second air cylinder 51, the second lifting air cylinder 54 fixed on the second sliding block 53, the second lifting plate 55 fixed on the extension end of the second lifting air cylinder 54, the second pressing air cylinder 50 fixed on the second lifting plate 55, the second moving block 56 fixed on the extension end of the second pressing air cylinder 50, and the second positioning frame 57 rotatably connected on the second moving block 56 and capable of pressing and clamping one end of the paint plate, the first sliding rail 42 and the second sliding rail 52 are arranged in parallel and are arranged perpendicularly to the guide rod 16, the sliding directions of the first moving block 46 and the second moving block 56 are arranged in parallel to the extension direction of the guide rod 16, each first positioning frame 47 is oppositely arranged, each second positioning frame 57 is oppositely arranged, each first positioning frame 47 is pressed on the paint plate through the drive of each first pressing air cylinder 40 on the first moving block 46, and each second positioning frame 57 is pressed on the paint plate through the drive of each second pressing air cylinder 50 on the second moving block 56.

[0036] Each first positioning frame 47 and each second positioning frame 57 comprises the pressing bottom plate 91 in the shape of "L" in cross section, and the pressing top plate 92 slidingly arranged on the pressing frame, the pressing bottom plate 91 is provided with the mounting groove 93, the mounting groove 93 is mounted with the fastening air cylinder 94, the extension end of the fastening air cylinder 94 is fixed on the pressing top plate 92, the pressing bottom plate 91 is provided with a plurality of upper guide rods 95, the pressing top plate 92 is provided with the guide groove 96 corresponding to each upper guide rod 95, and the paint plate is pressed on the pressing bottom plate 91 through the drive of the fastening air cylinder 94 and the sliding cooperation of each upper guide rod 95 and the corresponding guide groove 96.

[0037] Each first positioning frame 47 and each second positioning frame 57 is provided with a rotating shaft 8, each rotating shaft 8 is provided with a limiting plate 81, the first moving block 46 and the second moving block 56 are both provided with a rotating hole 7 matched with the rotating shaft 8, each rotating hole 7 is provided with a limiting slot 71 matched with the limiting plate 81, the diameter of the limiting plate 81 is larger than the diameter of the rotating shaft 8, the diameter of the limiting slot 71 is larger than the diameter of the rotating hole 7, the first positioning frame 47 is rotationally connected with the first moving block 46 through the cooperation of the rotating shaft 8 and the rotating hole 7 and the cooperation of the limiting plate 81 and the limiting slot 71, and the second positioning frame 57 is rotationally connected with the second moving block 56 through the cooperation of the rotating shaft 8 and the rotating hole 7 and the cooperation of the limiting plate 81 and the limiting slot 71.

[0038] Each rotating shaft 8 is a polygonal damping rotating shaft, the rotating hole 7 is a polygonal damping rotating hole 7, the first positioning frame 47 forms a damping cooperation with the first moving block 46 through the cooperation of each rotating shaft 8 and the rotating hole 7, and the second positioning frame 57 forms a damping cooperation with the second moving block 56 through the cooperation of each rotating shaft 8 and the rotating hole 7.

[0039] The second cabinet door 12 is fixedly provided with a handle 121.

[0040] The utility model discloses a working principle: the utility model in the process of using, the coating board is through the drive of each first pressure cylinder 40 to first moving block 46 and the drive of each second pressure cylinder 50 to second moving block 56 to the one end of coating board is pressed, thereby adapts to various different width's coating board, each pressure roof 92 is through the drive of tight cylinder 94 and each upper guide rod 95 and the sliding fit of corresponding guide groove 96 to press the coating board on the pressure bottom plate 91, thereby the coating board is pressed and positioning comprehensively, the guide sliding block 23 is through the drive of motor 21 to the drive of reciprocating screw rod 22 and the drive of guide rod 16 and reciprocates, the connecting plate 25 is through the drive of top lift cylinder 24 and approaches the coating board, according to the drying condition and impurity distribution of coating on the coating board, each variable diameter sliding block 63 is through the drive of variable diameter cylinder 61 and changes the inner diameter of ventilation passage 261 and cold air pump 28 and warm air pump 29 and is inhaled cold air and warm air and is removed and is dried to the coating board, after drying and removing impurity on one side of the coating board, each first positioning frame 47 is through the drive of first cylinder 41 to first sliding block 43, the drive of first lift cylinder 44 to first lift plate 45 and the cooperation of pivot 8 and rotation hole 7 and lifts and moves, each second positioning frame 57 is through the drive of second cylinder 51 to second sliding block 53 and the cooperation of pivot 8 and rotation hole 7 and moves, and the coating board is turned over through the lifting and moving of each first positioning frame 47 and the moving of each second positioning frame 57, then is removed and is dried to the coating board again comprehensive and efficient blowing, drying and impurity, can realize the comprehensive drying and removing impurity of coating board to the drive of variable diameter cylinder 61 to variable diameter sliding block 63 to the air pressure in part ventilation rod 26 is adjusted to guarantee the drying and removing impurity of part area on the coating board, has good adjustability and applicability, clever structure, efficient and convenient.

[0041] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the utility model, and it should be understood that the above-described specific embodiments are only for the specific embodiments of the utility model and do not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fume hood for paint board, having a cabinet body, and an inner cavity provided in the cabinet body, a first cabinet door is fixedly provided on the cabinet body, and a second cabinet door is slidingly provided on the cabinet body; characterized in that: The inner cavity is provided with a placing platform for placing paint plates and a ventilation assembly for blowing and drying the paint plates on the placing platform, the ventilation assembly comprises a driving motor fixed on the cabinet body, a guide sliding block horizontally slidingly arranged in the inner cavity under the driving of the driving motor, a top lifting cylinder fixed on the guide sliding block, a connecting plate fixed on the telescopic end of the top lifting cylinder, and ventilation rod groups oppositely arranged on the connecting plate, each ventilation rod group comprises a plurality of ventilation rods uniformly distributed on the connecting plate along the extension direction of the connecting plate and air blowing nozzles fixed on the bottom of each ventilation rod, each ventilation rod in one ventilation rod group corresponds to each ventilation rod in another ventilation rod group, the connecting plate is provided with two air inlet channels corresponding to each ventilation rod group, each air inlet channel is arranged in parallel, each ventilation rod is provided with a ventilation channel, each ventilation channel communicates with the corresponding air inlet channel, each air blowing nozzle communicates with the ventilation channel, the guide sliding block is fixedly provided with a cold air pump and a warm air pump, the cold air pump communicates with any air inlet channel through a pipe body, the warm air pump communicates with the other air inlet channel through a pipe body, each ventilation channel is provided with a variable-diameter assembly oppositely arranged and changing the inner diameter of the ventilation channel, the variable-diameter assembly comprises a variable-diameter cylinder fixed on the ventilation rod, a variable-diameter sliding groove arranged on the inner wall of each ventilation channel, and a variable-diameter sliding block slidingly arranged in the variable-diameter sliding groove under the driving of the variable-diameter cylinder, the sliding direction of the variable-diameter sliding block is perpendicular to the extension direction of the ventilation channel, the variable-diameter sliding block comprises a sliding part and telescopic parts slidingly arranged at the upper and lower ends of the sliding part, the upper and lower ends of the sliding part are provided with telescopic grooves, the extension direction of each telescopic groove is parallel to the extension direction of the ventilation channel, the telescopic grooves are provided with return springs, the two ends of the return springs are fixedly connected with the telescopic grooves and the telescopic parts, respectively, one end of each telescopic part away from the telescopic groove is abutted on the side wall of the variable-diameter sliding groove, each variable-diameter sliding block is driven by the variable-diameter cylinder to extend into the ventilation channel and change the inner diameter of the ventilation channel.

2. The fume hood for paint panels according to claim 1, characterized in that: The upper and lower ends of the variable-diameter sliding groove are provided with guide inclined surfaces, each telescopic part is provided with an abutment inclined surface corresponding to each guide inclined surface, the abutment inclined surface on each telescopic part is abutted on the guide inclined surface by the continuous force of each return spring on the telescopic part.

3. The fume hood for paint panels according to claim 2, characterized in that: The driving end of the driving motor is fixedly provided with a horizontally arranged reciprocating screw rod, the cabinet is fixedly provided with a guide rod arranged in parallel with the reciprocating screw rod, the guide block is provided with a connecting screw hole matched with the reciprocating screw rod, the guide block is provided with a through hole through which the guide rod passes, the guide block is slidably connected to the guide rod through the driving of the driving motor on the reciprocating screw rod and the threaded connection of the reciprocating screw rod and the connecting screw hole, the inner cavity is fixedly provided with top sliding rails arranged in parallel, the top of the inner cavity of each top sliding rail is provided with a top sliding rail, the extension direction of each top sliding rail is arranged in parallel with the guide rod, a plurality of telescopic rods are arranged between the top sliding rails and the connecting plate, the telescopic rod comprises a telescopic base and a rod portion slidably arranged on the telescopic base, the upper end of each telescopic base is provided with a top sliding block, each rod portion is fixed on the connecting plate, and the telescopic rod is slidably connected to the upper end of the inner cavity through the cooperation of the top sliding block and the top sliding rail.

4. The paint booth according to claim 3, characterized in that: The placing platform is provided with a first positioning assembly arranged oppositely and capable of positioning one end of the paint plate, and a second positioning assembly arranged oppositely and capable of positioning the other end of the paint plate, the first positioning assembly comprises a first sliding rail fixed on the placing platform, a first air cylinder fixed on the placing platform, a first sliding block slidably arranged on the first sliding rail under the driving of the first air cylinder, a first lifting air cylinder fixed on the first sliding block, a first lifting plate fixed on the telescopic end of the first lifting air cylinder, a first pressing air cylinder fixed on the first lifting plate, a first moving block fixed on the telescopic end of the first pressing air cylinder, and a first positioning frame rotatably connected to the first moving block and capable of pressing and clamping one end of the paint plate, the second positioning assembly comprises a second sliding rail fixed on the placing platform, a second air cylinder fixed on the placing platform, a second sliding block slidably arranged on the second sliding rail under the driving of the second air cylinder, a second lifting air cylinder fixed on the second sliding block, a second lifting plate fixed on the telescopic end of the second lifting air cylinder, a second pressing air cylinder fixed on the second lifting plate, a second moving block fixed on the telescopic end of the second pressing air cylinder, and a second positioning frame rotatably connected to the second moving block and capable of pressing and clamping one end of the paint plate, the first sliding rail and the second sliding rail are arranged in parallel and perpendicularly to the guide rod, the sliding directions of the first moving block and the second moving block are arranged in parallel to the extension direction of the guide rod, each first positioning frame is arranged oppositely, each second positioning frame is arranged oppositely, each first positioning frame is pressed on the paint plate through the driving of each first pressing air cylinder on the first moving block, and each second positioning frame is pressed on the paint plate through the driving of each second pressing air cylinder on the second moving block.

5. The paint booth according to claim 4, characterized in that: Each first positioning frame and each second positioning frame comprises a pressing bottom plate with an "L" shaped cross section, and a pressing top plate slidingly arranged on the pressing frame, the pressing bottom plate is provided with a mounting groove, a tightening cylinder is mounted in the mounting groove, an extension end of the tightening cylinder is fixed on the pressing top plate, a plurality of upper guide rods are arranged on the pressing bottom plate, the pressing top plate is provided with a guide groove corresponding to each upper guide rod, and the pressing top plate is pressed on the pressing bottom plate through driving of the tightening cylinder and sliding cooperation of each upper guide rod and the corresponding guide groove.

6. The fume hood for paint panels according to claim 5, characterized in that: Each first positioning frame and each second positioning frame is provided with a rotating shaft, each rotating shaft is provided with a limiting plate, the first moving block and the second moving block are both provided with a rotating hole matched with the rotating shaft, each rotating hole is provided with a limiting groove matched with the limiting plate, the diameter of the limiting plate is greater than the diameter of the rotating shaft, and the diameter of the limiting groove is greater than the diameter of the rotating hole, the first positioning frame is rotationally connected with the first moving block through cooperation of the rotating shaft and the rotating hole and cooperation of the limiting plate and the limiting groove, and the second positioning frame is rotationally connected with the second moving block through cooperation of the rotating shaft and the rotating hole and cooperation of the limiting plate and the limiting groove.

7. The fume hood for paint panels according to claim 6, characterized in that: Each rotating shaft is a polygonal damping rotating shaft, and each rotating hole is a polygonal damping rotating hole, the first positioning frame is formed in damping cooperation with the first moving block through cooperation of each rotating shaft and the rotating hole, and the second positioning frame is formed in damping cooperation with the second moving block through cooperation of each rotating shaft and the rotating hole.

8. The fume hood for paint panels according to claim 7, characterized in that: The second cabinet door is fixedly provided with a handle.

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