Automobile sheet metal cleaning and drying device

Abstract

The present application relates to a kind of automobile sheet metal cleaning drying device, by the cooperation of water flow tray and formation warehouse cover, two steps of cleaning and drying are carried out in the way of assembly line, effectively avoid repeated in-out operation, thereby effectively improve processing efficiency, while drying, two can form drying warehouse, sheet metal part can be turned over with drying warehouse and then dry, in addition, cooperate with the setting of variable gap strip, drying warehouse can be variable gap, after each rotation of sheet metal part, the width of variable gap strip becomes smaller, the space of hot air flow above formation warehouse cover increases substantially, thereby sheet metal part can be more fully directly blown by hot air flow, effectively improve drying speed, so that the efficiency of cleaning and drying as a whole is improved.

Description

Technical Field

[0001] The present invention relates to a cleaning and drying device, and more particularly to an automotive sheet metal cleaning and drying device applied in the field of automotive sheet metal cleaning and drying. Background Technology

[0002] Sheet metal work is a comprehensive cold-working process for thin metal sheets (usually less than 6mm thick), including shearing, punching / cutting / combined cutting, bending, welding, riveting, splicing, and forming (such as car bodies). Its most significant characteristic is that the thickness of the same part is consistent. Products processed through sheet metal work are called sheet metal parts. The term "sheet metal part" generally varies across different industries and is often used in assembly contexts.

[0003] In the prior art, the cleaning and drying of sheet metal parts are generally separate and independent steps. Both the cleaning and drying processes require feeding and discharging, resulting in low overall processing efficiency of sheet metal parts. Some existing technologies combine the two steps, but generally, after cleaning, the cleaning water is drained, and the sheet metal parts remaining in the cleaning tank are dried by hot air blowing. However, in this method, the sheet metal parts are stacked together, and the sheet metal parts facing downwards or located at the bottom dry more slowly, resulting in low overall efficiency.

[0004] Application content

[0005] The technical problem that this invention aims to solve in view of the above-mentioned prior art is the low efficiency of cleaning and drying sheet metal parts.

[0006] To address the aforementioned problems, this invention provides an automotive sheet metal cleaning and drying device, comprising an ultrasonic cleaning chamber, a drying chamber, and a conveyor belt assembly for conveying sheet metal parts. The conveyor belt assembly includes a production line support and a transmission belt mounted on the production line support. The transmission belt passes sequentially through the ultrasonic cleaning chamber and the drying chamber. Multiple rectangular holes are drilled in the belt body, and water trays are placed within these rectangular holes. Two adjusting rollers are mounted inside the ultrasonic cleaning chamber via an electric slide rail, both positioned above the transmission belt. The lower end of the drying chamber is mounted on the ground via a drying chamber support. An air inlet pipe and an exhaust pipe are fixedly connected to the upper and lower ends of the drying chamber, respectively, and both are connected to the interior of the drying chamber. Two electric push rods are fixedly installed at the top of the drying chamber, with a chamber cover between the two electric push rods. Connecting rods are fixedly connected to both ends of the chamber cover, and the ends of the two connecting rods are fixed to the adjacent electric push rods via electric rotating shafts.

[0007] In the aforementioned automotive sheet metal cleaning and drying device, the cleaning and drying steps are carried out in a streamlined manner through the coordinated arrangement of the water flow tray and the hopper cover, effectively avoiding repeated loading and unloading operations, thereby significantly improving processing efficiency. At the same time, during drying, the two can form a drying hopper, and the sheet metal parts can be rotated and repositioned with the drying hopper before drying. In addition, the drying hopper has variable gaps, allowing the sheet metal parts to directly face the hot airflow, which greatly accelerates the drying speed compared to existing technologies.

[0008] As a further improvement of this application, the ultrasonic cleaning chamber is filled with cleaning fluid, and the space inside the ultrasonic cleaning chamber is located below the transmission belt, while the space inside the drying chamber is located above the transmission belt, exceeding the usual limit.

[0009] As a further improvement of this application, the end openings of the flow tray and the silo cover near the drive belt are the same, and both of them have multiple through holes drilled at their outer ends.

[0010] As a further improvement of this application, multiple air guide pipes are provided at the bottom of the air inlet pipe. The multiple air guide pipes are fixed to and connected to the drying box, and the multiple air guide pipes correspond to the hood. The distribution range of the multiple air guide pipes does not exceed the hood.

[0011] As another improvement of this application, due to the arrangement of multiple through holes, multiple variable gap strips are formed on the silo cover. The variable gap strip includes two vertical bundles and a thermally variable strip fixedly connected to the upper end of the two bundles. The connection between the bundles and the thermally variable strip is located on the horizontal end face of the silo cover.

[0012] As a further improvement to this application, the thermal strip includes a positioning section located in the middle and thermal bending wings fixedly connected to the front and rear ends of the positioning section. The left and right ends of the positioning section are fixed to two bundles respectively, and the ends of the two thermal bending wings near the bundles are in contact with the bundles but not fixed.

[0013] As a further improvement to this application, a heating element is fixedly embedded inside the positioning middle section. Multiple evenly distributed elements are fixedly connected to both ends of the heating element and fixedly embedded inside the heat-transforming strip, including a temperature-sensing rod and a liner fixedly connected to the end of the temperature-sensing rod away from the positioning middle section.

[0014] As a further improvement to this application, the heating element includes an electric heating element and a plurality of heat-conducting rods fixedly connected to the left and right ends of the electric heating element, with the plurality of temperature-sensing rods respectively fixedly connected to the corresponding heat-conducting rods.

[0015] As a further improvement to this application, the positioning middle section is a rigid shaping structure, the part of the hot bending wing opposite the temperature sensing rod is made of elastic rubber material, and the other parts of the hot bending wing are made of rigid rubber material.

[0016] In summary, by combining the flow tray and the drying hood, the washing and drying steps are carried out in an assembly line manner, effectively avoiding repetitive loading and unloading operations, thereby significantly improving processing efficiency. During drying, the two components form a drying chamber, allowing sheet metal parts to rotate and dry. Furthermore, the variable gap strip design allows the drying chamber to have a variable gap; as the sheet metal parts rotate, the width of the strip decreases, significantly increasing the space above the drying hood directly facing the hot airflow. This allows the sheet metal parts to be more thoroughly exposed to the hot airflow, effectively increasing the drying speed and improving the overall efficiency of washing and drying. Attached Figure Description

[0017] Figure 1 This is a front view of the first embodiment of this application;

[0018] Figure 2 This is a front view of the first embodiment of this application during operation;

[0019] Figure 3 This is a front view of the drying chamber according to the first embodiment of this application;

[0020] Figure 4 This is a perspective view of the flow pallet and the warehouse cover relative to each other according to the first embodiment of this application;

[0021] Figure 5 This is a perspective view of the drying chamber formed by the flow tray and the silo cover according to the first embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the drying chamber rotating according to the first embodiment of this application;

[0023] Figure 7 This is a perspective view of the variable gap strip according to the second embodiment of this application;

[0024] Figure 8 This is a side cross-sectional view of the variable gap strip according to the second embodiment of this application;

[0025] Figure 9 This is a top view comparison of the variable gap strip before and after the variable gap in the second embodiment of this application;

[0026] Figure 10 This is a side view comparison of the variable gap strip before and after the variable gap is implemented according to the second embodiment of this application;

[0027] Figure 11 This is a top-view comparison of the silo cover before and after the gap change in the second embodiment of this application.

[0028] Explanation of the labels in the diagram:

[0029] 1. Ultrasonic cleaning box, 2. Drying box, 31. Assembly line support, 32. Transmission belt, 33. Drying box support, 4. Adjustment roller, 5. Flow tray, 61. Air inlet pipe, 62. Exhaust pipe, 7. Compartment cover, 701. Electric rotating shaft, 702. Connecting rod, 8. Electric push rod, 71. Bundle, 72. Heat-changing strip, 721. Positioning middle section, 722. Heat bending wing, 731. Temperature sensing rod, 732. Liner, 91. Heating element, 92. Heat-conducting rod. Detailed Implementation

[0030] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0031] First implementation method:

[0032] Figure 1 An automotive sheet metal cleaning and drying device is shown, including an ultrasonic cleaning chamber 1, a drying chamber 2, and a conveyor belt assembly for conveying sheet metal parts. The conveyor belt assembly includes a production line support 31 and a transmission belt 32 mounted on the production line support 31. The transmission belt 32 passes through the ultrasonic cleaning chamber 1 and the drying chamber 2 in sequence. The ultrasonic cleaning chamber 1 is located below the transmission belt 32 with a space exceeding the normal limit, and the drying chamber 2 is located above the transmission belt 32 with a space exceeding the normal limit.

[0033] In the diagram, 'a' represents the cleaning fluid. Multiple rectangular holes are drilled into the belt body of the transmission belt 32, and a water tray 5 is placed inside each rectangular hole. The ultrasonic cleaning chamber 1 is filled with cleaning fluid, which is a hydrocarbon solvent. Two adjusting rollers 4 are mounted inside the ultrasonic cleaning chamber 1 via an electric slide rail. Both adjusting rollers 4 are located above the transmission belt 32. Figure 2 During cleaning, the sheet metal parts are placed in the water tray 5 and enter the ultrasonic cleaning chamber 1 along with the conveyor belt 32. At this time, the two adjusting rollers 4 are moved down by the electric slide rail and press the conveyor belt 32, so that it drives the water tray 5 down and into the cleaning solution. Then the ultrasonic cleaning chamber 1 begins to perform ultrasonic cleaning on the sheet metal parts. After cleaning is completed, the adjusting rollers 4 are reset and the conveyor belt 32 is moved, thereby driving the water tray 5 into the drying chamber 2 for drying.

[0034] like Figure 2 The lower end of the drying chamber 2 is installed on the ground via the drying chamber bracket 33. The upper and lower ends of the drying chamber 2 are respectively fixedly connected to the air inlet pipe 61 and the exhaust pipe 62, and both are connected to the interior of the drying chamber 2. Two electric push rods 8 are fixedly installed at the top of the drying chamber 2. A chamber cover 7 is provided between the two electric push rods 8. It is worth noting that the downward-facing opening of the chamber cover 7 is made of electromagnetic material, which generates an adsorption force on the water tray 5 after being powered on.

[0035] Both ends of the drying hood 7 are fixedly connected to connecting rods 702. The ends of the two connecting rods 702 are fixed to the adjacent electric push rods 8 via electric rotating shafts 701. During drying, the drying hood 7 is first moved down by the electric push rods 8 to face the end face of the water tray 5. Figure 4-5 At this time, the control chamber cover 7 is powered on, and the chamber cover 7 adsorbs the water tray 5, so that the two are integrated and form a drying chamber, as shown. Figure 6 At this time, the electric rotating shaft 701 can be used to make the drying chamber rotate inside the drying box 2, causing multiple sheet metal parts to move inside and change their relative positions. At this time, the hot air flow injected into the drying box 2 from the air inlet pipe 61 can make the sheet metal parts fully contact the hot air flow, thereby greatly improving the drying efficiency of the sheet metal parts.

[0036] The flow tray 5 and the storage cover 7 have the same end opening near the drive belt 32, and both have multiple through holes drilled at their outer ends.

[0037] The bottom of the air inlet pipe 61 is equipped with multiple air guide pipes, all of which are fixed to and connected to the drying chamber 2, and all of which correspond to the chamber cover 7. The distribution range of the multiple air guide pipes does not exceed the chamber cover 7, so that the hot airflow entering the drying chamber 2 during drying can directly act on the sheet metal parts in the drying chamber, making drying faster and more efficient.

[0038] It is worth noting that the temperature of the hot airflow is 50-75℃.

[0039] In the aforementioned automotive sheet metal cleaning and drying device, the washing and drying steps are carried out in a streamlined manner through the coordinated arrangement of the water flow tray 5 and the hopper cover 7, effectively avoiding repeated loading and unloading operations, thereby effectively improving processing efficiency. At the same time, during drying, the two can form a drying hopper, and the sheet metal parts can be flipped and repositioned with the drying hopper before drying. In addition, the drying hopper has variable gaps, allowing the sheet metal parts to directly face the hot airflow, which greatly speeds up the drying process compared to existing technologies.

[0040] Second implementation method:

[0041] This embodiment adds the following content to the first embodiment, while keeping the rest the same as the first embodiment.

[0042] Figure 7 As shown, due to the arrangement of multiple through holes, multiple variable gap strips are formed on the hopper cover 7. The variable gap strips include two vertical straps 71 and a heat-sensitive strip 72 fixedly connected to the upper end of the two straps 71. The connection between the straps 71 and the heat-sensitive strip 72 is located on the horizontal end face of the hopper cover 7. It is worth noting that after each rotation to change the position of multiple sheet metal parts, it is necessary to control the hopper cover 7 to always face upward so that the multiple straps 71 are directly opposite the multiple air duct openings of 6.

[0043] like Figure 8-9 The thermochromic strip 72 includes a positioning section 721 located in the middle and thermochromic wings 722 fixedly connected to the front and rear ends of the positioning section 721. The left and right ends of the positioning section 721 are fixed to two bundles 71 respectively. The ends of the two thermochromic wings 722 near the bundles 71 are in contact with the bundles 71 but not fixed. A heating element is fixedly embedded inside the positioning section 721. Multiple evenly distributed elements 73 are fixedly connected to the left and right ends of the heating element. The elements 73 are fixedly embedded inside the thermochromic strip 72. Each element 73 includes a temperature sensing rod 731 and a liner 732 fixedly connected to the end of the temperature sensing rod 731 away from the positioning section 721.

[0044] The temperature sensing rod 731 is made of a two-way memory alloy material, and the critical temperature of the temperature sensing rod 731 is not lower than 75°C. Above the critical temperature, the temperature sensing rod 731 is L-shaped, and below the critical temperature, the temperature sensing rod 731 is straight.

[0045] like Figure 10-11 In the figure, b represents the variable gap strip. After each rotation of the drying chamber, the heating element is energized and heated to above the critical temperature, causing the temperature sensing rod 731 to change from a straight line to an L-shape. This causes the thermal bending wings 722 on both sides of the variable gap strip to bend from horizontal downwards to vertical, significantly reducing the width of the thermal variable gap strip 72 from a top-down view. This greatly increases the distance between two adjacent variable gap strips, reduces the obstruction of the hot airflow by multiple variable gap strips, and significantly improves the direct contact between the hot airflow and the sheet metal parts, thereby improving the drying efficiency.

[0046] In addition, before rotating again, stop heating and allow the variable gap bar to reset before rotating.

[0047] The heating element includes an electric heating element 91 and multiple heat-conducting rods 92 fixedly connected to the left and right ends of the electric heating element 91. Multiple temperature-sensing rods 731 are fixedly connected to the corresponding heat-conducting rods 92. During heating, the electric heating element 91 generates heat and transfers the heat along the heat-conducting rods 92 to the temperature-sensing rods 731. When the temperature reaches the critical temperature, it deforms, thereby causing the hot bending wing 722 to bend vertically downwards. The positioning middle section 721 is a rigid shaping structure. The part of the hot bending wing 722 opposite to the temperature-sensing rod 731 is made of elastic rubber material, so that when the temperature-sensing rod 731 deforms after reaching the critical temperature, it can smoothly drive the hot bending wing 722 to deform downwards along that point. The other parts of the hot bending wing 722 are made of hard rubber material. In addition, the lining strip 732 serves as an inner lining to improve the strength of the hot bending wing 722. When the drying chamber rotates, the hot bending strip 72 is not easily deformed by the impact of the sheet metal parts, making it difficult for the sheet metal parts to fall out of the drying chamber, thereby effectively ensuring stable and efficient material discharge after drying.

[0048] In summary, by combining the flow tray 5 and the hopper cover 7, the washing and drying steps are carried out in an assembly line manner, effectively avoiding repeated loading and unloading operations, thereby significantly improving processing efficiency. During drying, the two components form a drying chamber, allowing sheet metal parts to rotate and dry. The adjustable gap of the drying chamber allows the sheet metal parts to directly face the hot airflow, significantly accelerating the drying speed compared to existing technologies. Furthermore, the adjustable gap strip narrows with each rotation of the sheet metal part, greatly increasing the space above the hopper cover 7 directly facing the hot airflow. This allows the sheet metal parts to be more fully exposed to the hot airflow, effectively improving the drying speed and enhancing the overall efficiency of washing and drying.

[0049] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Various changes made within the knowledge of those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. An automotive sheet metal cleaning and drying device, characterized in that: The system includes an ultrasonic cleaning chamber (1), a drying chamber (2), and a conveyor belt assembly for conveying sheet metal parts. The conveyor belt assembly includes a production line support (31) and a transmission belt (32) mounted on the production line support (31). The transmission belt (32) passes through the ultrasonic cleaning chamber (1) and the drying chamber (2) in sequence. The transmission belt (32) has multiple rectangular holes drilled in its body, and a water tray (5) is placed in each of the rectangular holes. Two adjusting rollers (4) are installed inside the ultrasonic cleaning chamber (1) via an electric slide rail. Both adjusting rollers (4) are located above the transmission belt (32). The lower end of the drying chamber (2) is mounted via a drying chamber support (33). Installed on the ground, the drying box (2) is fixedly connected to the upper and lower ends of the air inlet pipe (61) and the exhaust pipe (62), respectively, and the two are connected to the inside of the drying box (2). Two electric push rods (8) are fixedly installed at the top of the drying box (2). A chamber cover (7) is provided between the two electric push rods (8). The left and right ends of the chamber cover (7) are fixedly connected to the connecting rods (702). The ends of the two connecting rods (702) are fixed to the adjacent electric push rods (8) through electric rotating shafts (701). The downward opening of the chamber cover (7) is made of electromagnetic material. When energized, it generates an adsorption force on the water tray (5), so that the two are integrated and form a drying chamber.

2. The automotive sheet metal cleaning and drying device according to claim 1, characterized in that: The ultrasonic cleaning box (1) is filled with cleaning fluid. More than half of the space of the ultrasonic cleaning box (1) is located below the transmission belt (32), and more than half of the space of the drying box (2) is located above the transmission belt (32).

3. The automotive sheet metal cleaning and drying device according to claim 1, characterized in that: The flow tray (5) and the silo cover (7) have the same end opening near the transmission belt (32), and both have multiple through holes drilled at their outer ends.

4. The automotive sheet metal cleaning and drying device according to claim 1, characterized in that: The bottom of the air inlet pipe (61) is provided with multiple air guide pipes. All of the multiple air guide pipes are fixed to and connected to the drying box (2), and all of the multiple air guide pipes correspond to the hood (7). The distribution range of the multiple air guide pipes does not exceed the hood (7).

5. The automotive sheet metal cleaning and drying device according to claim 3, characterized in that: Due to the arrangement of multiple through holes, multiple variable gap strips are formed on the silo cover (7). The variable gap strips include two vertical bundles (71) and a heat-varying strip (72) fixedly connected to the upper end of the two bundles (71). The connection between the bundles (71) and the heat-varying strip (72) is located on the horizontal end face of the silo cover (7).

6. The automotive sheet metal cleaning and drying device according to claim 5, characterized in that: The thermal strip (72) includes a positioning section (721) located in the middle and thermal bending wings (722) fixedly connected to the front and rear ends of the positioning section (721). The left and right ends of the positioning section (721) are fixed to two bundles (71) respectively, and the ends of the two thermal bending wings (722) near the bundles (71) are in contact with the bundles (71) but not fixed.

7. The automotive sheet metal cleaning and drying device according to claim 6, characterized in that: A heating element is fixedly embedded inside the positioning middle section (721). Multiple evenly distributed temperature sensing components (73) are fixedly connected to both ends of the heating element. The temperature sensing components (73) are fixedly embedded inside the thermocouple (72). The temperature sensing components (73) include a temperature sensing rod (731) and a liner (732) fixedly connected to the end of the temperature sensing rod (731) away from the positioning middle section (721).

8. The automotive sheet metal cleaning and drying device according to claim 7, characterized in that: The heating element includes an electric heating element (91) and multiple heat-conducting rods (92) fixedly connected to the left and right ends of the electric heating element (91). The multiple temperature-sensing rods (731) are respectively fixedly connected to the corresponding heat-conducting rods (92).

9. The automotive sheet metal cleaning and drying device according to claim 8, characterized in that: The positioning section (721) is a rigid shaping structure, the part of the hot bending wing (722) opposite to the temperature sensing rod (731) is made of elastic rubber material, and the other parts of the hot bending wing (722) are made of hard rubber material.

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