Intelligent manufacturing device for air cylinder machining

Abstract

The application provides an intelligent manufacturing device for cylinder processing, and relates to the technical field of cylinder manufacturing.The device comprises a processing switching mechanism and a bearing mechanism.The processing switching mechanism comprises an erecting base, three L-shaped supports are fixed around the erecting base, support corner blocks are arranged on the inner sides of the corners of the L-shaped supports, two support sliding rails are fixed between one side of the support corner blocks and the erecting base, a loading erecting base is slidably connected to the outer sides of the two support sliding rails, a switching driving disc is arranged on the top of the erecting base, and a servo motor is arranged in the erecting base in a detachable manner.The servo motor is used to control the rotation of the switching driving disc on the top of the erecting base, the sliding of the target loading erecting base on the outer sides of the corresponding support sliding rails, the work of a single mechanical arm directly below the erecting base, and the standby of the remaining two mechanical arms at the corners of the L-shaped supports, so that the single mechanical arm can work in an orderly manner without interfering with the remaining mechanical arms, and the conversion efficiency of different processes is improved.

Description

Technical Field

[0001] This invention relates to the field of cylinder manufacturing technology, and more specifically, to an intelligent manufacturing equipment for cylinder processing. Background Technology

[0002] A cylinder is a cylindrical metal component that guides a piston in linear reciprocating motion within the cylinder. In an engine cylinder, air expands, converting thermal energy into mechanical energy; in a compressor cylinder, gas is compressed by the piston, increasing its pressure.

[0003] The current manufacturing of cylinders is mainly completed in single batches through specific cutting, welding, and assembly equipment. During the cylinder production process, cutting, welding, and assembly cannot be carried out separately in the same manufacturing equipment, and the overall manufacturing of cylinders cannot be completed in one go. In subsequent testing, it is easy to detect a large number of cylinders with the same fault.

[0004] Therefore, we have made improvements to this and proposed a smart manufacturing equipment for cylinder machining. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent manufacturing equipment for cylinder processing. A servo motor and drive prism rod control the rotation of a switching drive disc on top of a mounting base. With the aid of bearings, support shafts, and support columns, the target loading mounting base can be controlled to slide outside the corresponding support rail. When a bearing moves from the C-field to the V-field, it can drive the target loading mounting base from the corner of the L-shaped bracket to the bottom of the mounting base, allowing the target robotic arm to perform processing work on top of the cylinder. This ensures that individual robotic arms work in an orderly manner without interfering with other robotic arms, improves the efficiency of switching between different processes, and facilitates the completion of a single cylinder production in one operation. When a fault is detected during the inspection process, the equipment can be repaired promptly, avoiding the problem of large-scale cylinder failures. This solves the problem in existing cylinder production processes where cutting, welding, and assembly cannot be performed separately within the same manufacturing equipment, and the entire cylinder manufacturing process cannot be completed in one operation.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] A smart manufacturing device for cylinder processing includes a processing switching mechanism and a carrying mechanism. The processing switching mechanism includes a mounting base, three L-shaped brackets are fixedly connected around the mounting base, and an arc-shaped arm is fixedly connected between two adjacent L-shaped brackets. Support corner blocks are bolted to the inner side of the corners of the L-shaped brackets. Two support slide rails are fixedly connected to one side of the support corner blocks and the mounting base. The loading mounting base is slidably connected to the outside of the two support slide rails. A switching drive disk is provided on the top of the mounting base, and a servo motor is assembled inside the mounting base.

[0008] The bearing mechanism includes a bearing frame, with multiple exhaust fans installed at the bottom of the inner side of the bearing frame, a support platform installed at the top of the inner side of the bearing frame, four chip removal slots machined around the support platform, four movable baffles connected to the bottom of the support platform via hinges, a hydraulic push rod assembled to the bottom of the support platform, a transition block fixedly connected to the bottom of the movable end of the hydraulic push rod, and control arms hinged to all four sides of the transition block;

[0009] The bottom of the mounting base is fixedly connected to a detection camera by bolts, and the three mounting bases are used to assemble robotic arms that perform different processing functions.

[0010] As a preferred technical solution of this application, a support plate is fixedly connected to one side of the bottom of the L-shaped bracket. The support plate is located on the side close to the center of the cross-section of the load-bearing frame. The surface of the L-shaped bracket is in contact with the surface of the load-bearing frame. The support plate is fixedly connected to the load-bearing frame by bolts.

[0011] As a preferred technical solution of this application, the top of the loading frame base is fixedly connected to a support column, the top of the support column is fixedly connected to a support shaft, the top of the L-shaped bracket is machined with a storage slide, and the support column is slidably connected inside the storage slide.

[0012] As a preferred technical solution of this application, the bottom of the switching drive disk is machined with a switching guide groove, and the support shaft is externally interference-fitted with a bearing, which is movably connected inside the switching guide groove.

[0013] As a preferred technical solution of this application, the switching guide groove includes a V field and a C field, the two ends of the V field and the C field are connected to each other, and the tip of the V field faces one side of the center of the switching drive disk cross section.

[0014] As a preferred technical solution of this application, one end of the servo motor shaft is fixedly connected to a drive prism rod, the drive prism rod is pin-connected to the inside of the switching drive disk, and the switching drive disk is rotatably connected to the top of the mounting base.

[0015] As a preferred technical solution of this application, one end of the control arm is hinged to the bottom of the movable baffle, and the four movable baffles are respectively movably connected to the bottom of the four chip removal slots.

[0016] As a preferred technical solution of this application, the top of the support frame is machined with a storage tray groove, the support platform is located inside the storage tray groove, the support platform is fixedly connected to the support frame by bolts, the top of the support platform is fixedly connected to the support platform, the cross section of the support platform is an isosceles trapezoid, and the top of the support platform is flush with the top of the support frame.

[0017] As a preferred technical solution of this application, an assembly bracket is provided on the inner side of the bottom of the support frame, and support corner strips are fixedly connected to the bottom of the four sides of the assembly bracket. One end of the support corner strips is fixedly connected to the support frame, and multiple exhaust fans are assembled and connected to the top of the assembly bracket.

[0018] As a preferred technical solution of this application, it includes a controller, wherein the output end of the detection camera is connected to the input end of the controller, and the output end of the controller is connected to the input end of the hydraulic push rod, the input end of the servo motor and the input end of the exhaust fan.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In the scheme of this application:

[0021] 1. The drive plate rotates on top of the mounting base by controlling the switching drive plate with a servo motor and drive prism rod. With the help of bearings, support shafts and support columns, the target loading mounting base can be controlled to slide outside the corresponding support slide rail. When a bearing moves from the C field to the inside of the V field, it can drive the target loading mounting base from the corner of the L-shaped bracket to the bottom of the mounting base, so that the target robotic arm can perform processing work on the top of the cylinder. This can ensure that the individual robotic arms work in an orderly manner without interfering with the remaining robotic arms, and improve the conversion efficiency of different processes. It is conducive to completing the production of a single cylinder in one go. When a fault is detected during the inspection process, the equipment can be repaired in time to avoid the problem of large-scale cylinder failure.

[0022] 2. By capturing the movement of the cutting and welding robotic arms to the top of the support platform using a detection camera, a signal is transmitted to the controller to operate the exhaust fan. This allows the movable end of the hydraulic push rod to extend from the inside of the fixed end. The control arm pulls the movable baffle at the bottom of the support platform to open the channel at the bottom of the chip discharge slot, allowing processing waste to fall from the chip discharge slot into the inside of the support frame and fall to the bottom, preventing processing waste from accumulating on the top of the support platform.

[0023] 3. When the camera detects the assembly robot arm moving to the top of the support platform, a signal is transmitted to the controller to control the exhaust fan to work and control the movable end of the hydraulic push rod to retract into the fixed end. The control arm pushes the movable baffle to move at the bottom of the support platform to close the channel at the bottom of the chip removal slot, preventing the standard parts for assembly from falling into the inside of the support frame from the chip removal slot and falling to the bottom, which would damage the exhaust fan. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall structure of an intelligent manufacturing equipment for cylinder processing provided in this application;

[0025] Figure 2 An exploded view of a processing switching mechanism for intelligent manufacturing equipment used in cylinder processing, provided in this application;

[0026] Figure 3 This application provides an intelligent manufacturing equipment for cylinder machining. Figure 2 Enlarged diagram of section A in the middle;

[0027] Figure 4 A schematic diagram of the connection structure between an L-shaped bracket and a mounting base for an intelligent manufacturing equipment used in cylinder processing, provided in this application;

[0028] Figure 5 A schematic diagram of the structure of a switching drive plate for intelligent manufacturing equipment used in cylinder processing, provided in this application;

[0029] Figure 6 An exploded view of an intelligent manufacturing equipment for cylinder processing provided in this application;

[0030] Figure 7 This application provides a structural schematic diagram of a support platform for intelligent manufacturing equipment used in cylinder machining.

[0031] The image shows:

[0032] 1. Processing switching mechanism; 101. Switching drive disk; 102. Loading and mounting base; 103. L-shaped bracket; 104. Support plate; 105. Switching guide groove; 106. Support slide rail; 107. Mounting base; 108. Support corner block; 109. Support column; 110. Drive prism rod; 111. Servo motor; 112. Detection camera; 113. Arc arm; 114. Storage slide; 115. Support shaft; 116. Bearing;

[0033] 2. Bearing mechanism; 201. Bearing frame; 202. Bearing platform; 203. Movable baffle; 204. Chip discharge slot; 205. Supporting corner strip; 206. Exhaust fan; 207. Assembly bracket; 208. Storage tray slot; 209. Support platform; 210. Hydraulic push rod; 211. Adapter block; 212. Control arm. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Please see Figures 1 to 7 This invention provides a technical solution: an intelligent manufacturing equipment for cylinder processing.

[0040] Example 1:

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this embodiment proposes an intelligent manufacturing equipment for cylinder processing, including a processing switching mechanism 1. The processing switching mechanism 1 includes a mounting base 107. A detection camera 112 is fixedly connected to the bottom of the mounting base 107 by bolts. Three L-shaped brackets 103 are fixedly connected around the mounting base 107. An arc-shaped arm 113 is fixedly connected between two adjacent L-shaped brackets 103. A support corner block 108 is bolted to the inner side of the corner of the L-shaped bracket 103. Two support slide rails 106 are fixedly connected between one side of the support corner block 108 and the mounting base 107. A loading mounting base 102 is slidably connected to the outside of the two support slide rails 106. A switching drive disk 101 is provided on the top of the mounting base 107. A servo motor 111 is assembled and connected inside the mounting base 107.

[0042] Among them, the robotic arms performing different processing functions are respectively bolted to one side of the loading frame base 102. The robotic arms include a cutting processing robotic arm, a welding processing robotic arm, and an assembly robotic arm.

[0043] Secondly, in order to mount the three loading support bases 102 on the top of the bearing mechanism 2 so that the robotic arm can switch between the three L-shaped supports 103, a support plate 104 is fixedly connected to one side of the bottom of the L-shaped support 103. After the support plate 104 is fixed to the bearing frame 201 by bolts, the support plate 104 can be located on the side close to the center of the cross section of the bearing frame 201, and the surface of the L-shaped support 103 is in contact with the surface of the bearing frame 201.

[0044] Furthermore, in order to enable the servo motor 111 installed inside the mounting base 107 to control the switching drive disk 101 to rotate stably on the top of the mounting base 107 via the rotating shaft, a drive prism rod 110 is fixed at one end of the rotating shaft of the servo motor 111, so that the drive prism rod 110 is pin-connected to the inside of the switching drive disk 101. During the process of the servo motor 111 driving the switching drive disk 101 to rotate through the drive prism rod 110, the switching drive disk 101 can be prevented from detaching from the top of the mounting base 107 by the weight of the switching drive disk 101 itself.

[0045] Furthermore, in order to enable the switching drive disk 101 to control the three loading support bases 102 to slide outside the support slide rail 106 respectively through the switching guide groove 105 machined on its bottom, a support column 109 is fixedly connected to the top of the loading support base 102, and a support shaft 115 is fixedly connected to the top of the support column 109. A storage slide 114 is machined on the top of the L-shaped bracket 103, so that the support column 109 is slidably connected to the inside of the storage slide 114.

[0046] Meanwhile, the switching guide groove 105 includes a V-field and a C-field, with the two ends of the V-field and the C-field connected to each other. The tip of the V-field faces one side of the center of the cross-section of the switching drive disk 101. When the bearing 116 is interference-fitted on the outside of the support shaft 115, so that the bearing 116 is movably connected inside the switching guide groove 105, during the rotation of the switching drive disk 101, the single loading support base 102 can move in the bottom area of ​​the V-field with the help of the bearing 116, which moves in the bottom area of ​​the C-field.

[0047] Example 2:

[0048] The solution in Example 1 will be further described below with reference to its specific working method.

[0049] like Figure 1 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, it further includes a support mechanism 2. The support mechanism 2 includes a support frame 201. Multiple exhaust fans 206 are provided at the bottom of the inner side of the support frame 201. A support platform 209 is provided at the top of the inner side of the support frame 201. Four chip removal slots 204 are machined around the support platform 209. Four movable baffles 203 are movably connected to the bottom of the support platform 209 by hinges. A hydraulic push rod 210 is assembled and connected to the bottom of the support platform 209. A transition block 211 is fixedly connected to the bottom of the movable end of the hydraulic push rod 210. A control arm 212 is hinged to all four sides of the transition block 211.

[0050] The cylinder to be processed is loaded onto the top of the support platform 202, and the processing status of the cylinder is monitored by the detection camera 112.

[0051] Secondly, one end of the control arm 212 is hinged to the bottom of the movable baffle 203. When the movable end of the hydraulic push rod 210 extends or retracts inside the fixed end, the four movable baffles 203 can be driven to move at the bottom of the four chip discharge slots 204 respectively through the adapter block 211 to open and close the internal channel of the chip discharge slots 204.

[0052] Furthermore, in order to facilitate the accumulation of waste generated during cutting and welding on the top of the support platform 209, a storage tray 208 is machined on the top of the support frame 201, so that the support platform 209 is housed inside the storage tray 208. After the support platform 209 is fixedly connected to the support frame 201 by bolts, it is ensured that the top of the support platform 209 is flush with the top of the support frame 201. A support platform 202 is fixedly connected to the top of the support platform 209, so that the cross section of the support platform 202 is an isosceles trapezoid. When the cylinder is located on the top of the support platform 202, the processing waste can slide down the inclined surface of the support platform 202 to the bottom and into the chip discharge slot 204.

[0053] Furthermore, in order to install multiple exhaust fans 206 inside the support frame 201 so that the airflow at the top of the support frame 201 can carry the processing waste into the support frame 201 and complete the collection work at the bottom of the support frame 201, an assembly bracket 207 is provided on the inner side of the bottom of the support frame 201. The bottom of each of the four sides of the assembly bracket 207 is fixedly connected to a support corner strip 205. After fixing one end of the support corner strip 205 to the support frame 201, multiple exhaust fans 206 are assembled on the top of the assembly bracket 207.

[0054] Example 3:

[0055] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, a controller is further included. The output terminal of the detection camera 112 is connected to the input terminal of the controller, and the output terminal of the controller is connected to the input terminal of the hydraulic push rod 210, the input terminal of the servo motor 111, and the input terminal of the exhaust fan 206.

[0057] When the rotating switching drive disk 101 controls the loading and mounting base 102 of the assembly cutting and welding robotic arm to slide to the bottom of the V field outside the support slide rail 106 through the switching guide groove 105, the detection camera 112 captures the working status of the robotic arm and transmits a signal to the controller to control the exhaust fan 206 to work and control the movable end of the hydraulic push rod 210 to extend from the inside of the fixed end. The control arm 212 pulls the movable baffle 203 to flip at the bottom of the support platform 209, opening the channel at the bottom of the chip discharge slot 204, so that the processing waste falls from the chip discharge slot 204 into the inside of the bearing frame 201 and falls to the bottom.

[0058] When the rotating switching drive disk 101 controls the loading frame base 102, on which the assembly robot arm is mounted, to slide outside the support slide rail 106 to the bottom of the V field via the switching guide groove 105, the detection camera 112 captures the working status of the robot arm and transmits a signal to the controller to control the exhaust fan 206 to work and control the movable end of the hydraulic push rod 210 to retract into the interior of the fixed end. The control arm 212 pushes the movable baffle 203 to move at the bottom of the support platform 209, closing the channel at the bottom of the chip discharge slot 204 and preventing the assembly standard parts from falling into the interior of the bearing frame 201 from the chip discharge slot 204 and falling to the bottom.

[0059] Specifically, when this intelligent cylinder manufacturing equipment is working / in use: the detection camera 112 continuously captures images of the cylinder on top of the support mechanism 2; the servo motor 111 controls the switching drive disk 101 to rotate on top of the mounting base 107 via the drive prism rod 110; with the help of the bearing 116, support shaft 115, and support column 109, the switching guide groove 105 can cooperate with the bearing 116 to control the target loading mounting base 102 to slide outside the corresponding support slide rail 106; when one bearing 116 moves from the C-section to the inside of the V-section, it can drive the target loading mounting base 102 to move from the corner of the L-shaped bracket 103 to the bottom of the mounting base 107, so that the target robotic arm can perform processing work on top of the cylinder; while the remaining two bearings 116 drive the support shaft 115 and support column 109 to the bottom area of ​​the C-section, so that the remaining robotic arm is in position.

[0060] When the detection camera 112 captures the cutting and welding robotic arms moving to the top of the support platform 202, a signal is transmitted to the controller to control the exhaust fan 206 to work and to control the movable end of the hydraulic push rod 210 to extend from the inside of the fixed end. The control arm 212 pulls the movable baffle 203 to flip at the bottom of the support platform 209, opening the channel at the bottom of the chip discharge slot 204. This allows the processing waste to fall from the chip discharge slot 204 into the inside of the support frame 201 and fall to the bottom, preventing the processing waste from accumulating on the top of the support platform 209. This ensures that after a single cylinder completes its production work, another cylinder can continue to be processed.

[0061] When the detection camera 112 captures the assembly robot arm moving to the top of the support platform 202, a signal is transmitted to the controller to control the exhaust fan 206 to work and control the movable end of the hydraulic push rod 210 to retract into the interior of the fixed end. The control arm 212 pushes the movable baffle 203 to move at the bottom of the support platform 209, closing the channel at the bottom of the chip discharge slot 204. This prevents standard assembly parts from falling from the chip discharge slot 204 into the interior of the support frame 201 and falling to the bottom. The fallen assembly parts will be collected inside the chip discharge slot 204 for easy subsequent cleaning. This can prevent parts from falling into the exhaust fan 206 and causing damage to the exhaust fan 206.

[0062] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A smart manufacturing equipment for cylinder machining, characterized in that, include The processing switching mechanism (1) includes a mounting base (107), three L-shaped brackets (103) are fixedly connected around the mounting base (107), and an arc arm (113) is fixedly connected between two adjacent L-shaped brackets (103). A support corner block (108) is bolted to the inner side of the corner of the L-shaped bracket (103). Two support slide rails (106) are fixedly connected between one side of the support corner block (108) and the mounting base (107). A loading mounting base (102) is slidably connected to the outside of the two support slide rails (106). A switching drive disk (101) is provided on the top of the mounting base (107), and a servo motor (111) is assembled inside the mounting base (107). The top of the loading support base (102) is fixedly connected to a support column (109), the top of the support column (109) is fixedly connected to a support shaft (115), the top of the L-shaped bracket (103) is machined with a storage slide (114), and the support column (109) is slidably connected to the inside of the storage slide (114). The bottom of the switching drive disk (101) is machined with a switching guide groove (105), and the support shaft (115) is externally interference-fitted with a bearing (116), which is movably connected inside the switching guide groove (105). The switching guide groove (105) includes a V field and a C field, the two ends of the V field and the C field are connected to each other, and the tip of the V field faces one side of the center of the cross-section of the switching drive disk (101); The bearing mechanism (2) includes a bearing frame (201), a plurality of exhaust fans (206) are provided at the bottom of the inner side of the bearing frame (201), a support platform (209) is provided at the top of the inner side of the bearing frame (201), four chip removal slots (204) are machined around the support platform (209), four movable baffles (203) are movably connected to the bottom of the support platform (209) by hinges, a hydraulic push rod (210) is assembled and connected to the bottom of the support platform (209), a transition block (211) is fixedly connected to the bottom of the movable end of the hydraulic push rod (210), and a control arm (212) is hinged around the transition block (211). One end of the control arm (212) is hinged to the bottom of the movable baffle (203), and the four movable baffles (203) are respectively movably connected to the bottom of the four chip discharge slots (204); The bottom of the mounting base (107) is fixedly connected to a detection camera (112) by bolts, and the three mounting bases (102) are used to assemble robotic arms that perform different processing functions. The system includes a controller, the output of which is connected to the input of the detection camera (112), and the output of which is connected to the input of the hydraulic push rod (210), the input of the servo motor (111), and the input of the exhaust fan (206).

2. The intelligent manufacturing equipment for cylinder processing according to claim 1, characterized in that, A support plate (104) is fixedly connected to one side of the bottom of the L-shaped bracket (103). The support plate (104) is located on the side close to the center of the cross section of the bearing frame (201). The surface of the L-shaped bracket (103) is in contact with the surface of the bearing frame (201). The support plate (104) is fixedly connected to the bearing frame (201) by bolts.

3. The intelligent manufacturing equipment for cylinder processing according to claim 1, characterized in that, One end of the servo motor (111) shaft is fixedly connected to a drive prism rod (110), which is pin-connected to the inside of the switching drive disk (101), and the switching drive disk (101) is rotatably connected to the top of the mounting base (107).

4. The intelligent manufacturing equipment for cylinder processing according to claim 1, characterized in that, The top of the support frame (201) is machined with a storage tray groove (208), and the support platform (209) is located inside the storage tray groove (208). The support platform (209) is fixedly connected to the support frame (201) by bolts. The top of the support platform (209) is fixedly connected to the support platform (202). The cross section of the support platform (202) is an isosceles trapezoid, and the top of the support platform (209) is flush with the top of the support frame (201).

5. The intelligent manufacturing equipment for cylinder processing according to claim 1, characterized in that, An assembly bracket (207) is provided on the inner side of the bottom of the support frame (201). Supporting corner strips (205) are fixedly connected to the bottom of the four sides of the assembly bracket (207). One end of the supporting corner strip (205) is fixedly connected to the support frame (201). Multiple exhaust fans (206) are assembled and connected to the top of the assembly bracket (207).

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