Drying furnace for spraying metal surface

Abstract

The utility model discloses a metal surface spraying and drying furnace, and particularly relates to the technical field of metal surface treatment, the metal surface spraying and drying furnace comprises a furnace body for drying the sprayed metal surface, the metal surface spraying and drying furnace is provided with an upper positioning assembly and a lower positioning assembly, and metal workpieces with the same size specification are placed in a plurality of positioning units in the same positioning assembly; the end of the metal workpiece makes contact with the slope, the positioning pressing blocks are slidably pushed to slide outside the rotating roller, the outer surface of the end of the metal workpiece is fixed by the two positioning pressing blocks, then the transmission rod is pulled, the extending end of the transmission rod moves in the fixing rod, the length of the transmission rod and the length of the fixing rod are increased, and the angle of the rotating rod is changed by rotating the motor. The contact blocks are attached to the outer surfaces of the metal workpieces, the metal workpieces are effectively fixed, falling caused by overturning drying is avoided, the metal workpieces of the other specification are installed in the same mode, simultaneous drying of the metal workpieces of different types is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal surface treatment, in particular to a metal surface spraying and drying furnace. Background Art

[0002] A metal spray drying oven is a device that uses a baking technique to cure the paint into a film after spraying on the metal surface. In order to enhance the anti-corrosion protection of the metal substrate, the paint is evenly applied to the surface of the metal workpiece by spraying or brushing. In order to make the paint sprayed on the metal workpiece solidify quickly, it is baked at a certain temperature so that the paint gradually solidifies into a film to achieve the purpose of protection and decoration.

[0003] In the existing solution, the metal workpiece is directly placed in the tray, sprayed and then placed in the oven. The metal workpiece is only in close contact with the tray, and the bottom surface cannot be sprayed. The spraying area is limited, and direct spraying and drying result in unsatisfactory spraying and drying effects. Utility Model Content

[0004] The purpose of the utility model is to provide a metal surface spray drying furnace to solve the problems mentioned in the above background technology.

[0005] The main problems solved by this utility model are:

[0006] The metal workpiece is only in close contact with the disc body, the spraying area is limited, and direct spraying and drying result in unsatisfactory spraying and drying effects.

[0007] The utility model can be realized by the following technical solutions:

[0008] A metal surface spray drying furnace, comprising a furnace body for drying the metal surface after spraying, wherein a fixed frame is installed in the internal transmission of the furnace body, a rotating roller is rotatably installed in the upper part of the inner cavity of the fixed frame, and the outer surface of the rotating roller is provided with two sets of upper and lower positioning components for limiting different metal workpieces, and the outer surface of the rotating roller is provided with an inwardly concave groove, each set of positioning components includes a plurality of positioning units, and the positioning units include two positioning blocks slidably provided on the outer surface of the rotating roller, the inner side surfaces of the two positioning blocks are provided with a slope, and the end faces of the positioning blocks are fixed with a fixing rod;

[0009] A transmission rod is elastically mounted on one end of the fixed rod. The end of the transmission rod drives a rotating rod through a rotary motor. The end of the inner surface of the rotating rod is provided with a contact block that fits with the metal surface.

[0010] A further technical improvement of the present invention is that a slide groove is provided on the outer surface of the rotating roller, a spring 1 is installed at one end of the inner wall of the slide groove, the end of the spring 1 is fixedly connected to a slider sliding in the slide groove, and the outer end surface of the slider is fixed to the surface of the positioning pressure block.

[0011] A further technical improvement of the present invention is that a movable card cavity is provided inside the fixed rod, the inserted end of the transmission rod slides in the movable card cavity, and the inserted end of the transmission rod is sleeved with a spring 2, one end of the spring 2 is fixed to the inner wall surface of the movable card cavity.

[0012] A further technical improvement of the present invention is that an air inlet is provided in the middle of the top surface of the furnace body, a fan is installed inside the air inlet, a heating tube is provided below the fan, and an exhaust port is provided at the bottom of the furnace body.

[0013] A further technical improvement of the present invention is that a shelf is provided in the inner cavity of the fixing frame below the positioning unit, a surface of the shelf is provided with a plurality of oblique grooves, and a liquid storage cavity is provided on the lower surface of the shelf, and the oblique grooves are inverted frustum-shaped structures.

[0014] A further technical improvement of the present invention is that a coating liquid chamber is provided on one side of the furnace body in the opposite direction to the exhaust port, and fixed blocks are fixed on both sides of the coating liquid chamber and the interior of the furnace body. A transmission screw driven by a forward and reverse motor is installed between the two fixed blocks on one side, and a limiting rod is installed between the two fixed blocks on the other side. The external thread of the transmission screw is sleeved with a transmission block, and a slide is installed on the outside of the limit rod for sliding. The top ends of the transmission block and the slide are fixed to the bottom surface of the fixed frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting up two sets of upper and lower positioning components, metal workpieces of the same size are placed in multiple positioning units in the same set of positioning components, that is, the end of the metal workpiece contacts the slope, and the sliding pushes the positioning block to slide on the outside of the rotating roller. The outer surface of the end of the metal workpiece is fixed by two positioning blocks, and then the transmission rod is pulled, and the inserted end of the transmission rod moves in the fixed rod, so that the length of the transmission rod and the fixed rod is increased. By rotating the motor to change the angle of the rotating rod, the contact block fits with the outer surface of the metal workpiece, effectively fixing the metal workpiece to avoid falling due to overturning, spraying and drying. The installation end face of the metal workpiece is wetted and sprayed through the concave groove to increase the spraying area. The metal workpiece of another specification is installed in the same way to achieve simultaneous spraying and drying of different types of metal workpieces, thereby improving production efficiency.

[0017] 2. The rotating roller is used for spraying and drying, which covers a wider area of ​​spraying and baking. Multiple spraying is performed to cover different areas of the metal workpiece. After spraying evenly, baking is performed, the baking surface is changed, and the drying time is shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A partial enlarged view of point A in the middle;

[0021] Figure 3 For this utility model Figure 2 A partial enlarged view of point B in the middle.

[0022] In the figure: 1. furnace body; 2. air inlet; 3. fixed frame; 4. rotating roller; 5. liquid storage chamber; 6. exhaust port; 7. transmission block; 8. transmission screw; 9. fixed block; 10. slide groove; 11. spring 1; 12. slider; 13. positioning pressure block; 14. shelf; 15. oblique groove; 16. slope; 17. fixed rod; 18. transmission rod; 19. spring 2; 20. rotating rod; 21. contact block. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-Figure 3As shown, the utility model provides a metal surface spray drying furnace, including a furnace body 1 for drying the metal surface after spraying, the internal transmission of the furnace body 1 is installed with a fixed frame 3, and a rotating roller 4 is rotatably installed on the upper part of the inner cavity of the fixed frame 3, and the outer surface of the rotating roller 4 is provided with an upper and lower group of positioning components for limiting different metal workpieces, and the outer surface of the rotating roller 4 is provided with an inwardly concave groove, and the installation end surface of the metal workpiece is wetted and sprayed through the concave groove. Each group of positioning components includes a plurality of positioning units, the positioning unit includes two positioning pressure blocks 13 slidingly arranged on the outer surface of the rotating roller 4, the inner side surfaces of the two positioning pressure blocks 13 are provided with a slope 16, and the end surface of the positioning pressure block 13 is fixed with a fixing rod 17; one end of the fixing rod 17 is elastically installed with a transmission rod 18, and the end of the transmission rod 18 is driven by a rotating motor to have a rotating rod 20, and the end of the inner surface of the rotating rod 20 is provided with a contact block 21 that fits the metal surface. When in use, The upper and lower positioning assemblies of the frame 3 are respectively used to place metal workpieces of different sizes and shapes. When placing them, metal workpieces of the same size are placed in multiple positioning units in the same positioning assembly, that is, the end of the metal workpiece contacts the slope 16, and the positioning block 13 is pushed to slide on the outside of the rotating roller 4. The outer surface of the end of the metal workpiece is fixed by the two positioning blocks 13, and then the transmission rod 18 is pulled, and the extended end of the transmission rod 18 moves in the fixed rod 17, so that the length of the transmission rod 18 and the fixed rod 17 is increased. The angle of the rotating rod 20 is changed by rotating the motor so that the contact block 21 is fitted with the outer surface of the metal workpiece, effectively fixing the metal workpiece to avoid falling off during flipping, spraying and drying. Metal workpieces of another specification are installed in the same way to achieve simultaneous spraying and subsequent drying of different types of metal workpieces, thereby improving production efficiency. The rotating roller 4 is used for flipping and drying, the baking surface is changed, and the drying time is shortened.

[0025] See Figure 2 As shown, a slide groove 10 is provided on the outer surface of the rotating roller 4, and a spring 11 is installed at one end of the inner wall of the slide groove 10. The end of the spring 11 is fixedly connected to a slider 12 that slides in the slide groove 10. The outer end surface of the slider 12 is fixed to the surface of the positioning pressure block 13. When the metal workpiece comes into contact with the positioning pressure block 13, the positioning pressure block 13 slides under the push of the slope 16, that is, the positioning pressure block 13 drives the slider 12 to slide in the slide groove 10, and then compresses the spring 11, causing the spring 11 to undergo elastic deformation, and the two positioning pressure blocks 13 limit the outer side of the metal workpiece. When the metal workpiece is taken out, the spring 11 elastically resets, and the two positioning pressure blocks 13 return to their initial shape.

[0026] See Figure 3As shown, a movable card cavity is provided inside the fixed rod 17, and the inserted end of the transmission rod 18 slides in the movable card cavity, and the inserted end of the transmission rod 18 is sleeved with a spring 2 19, one end of the spring 2 19 is fixed to the inner wall surface of the movable card cavity. When the transmission rod 18 is pulled, the inserted end of the transmission rod 18 slides in the movable card cavity and simultaneously squeezes the spring 2 19, thereby increasing the length of the transmission rod 18 and the fixed rod 17.

[0027] See Figure 2 As shown, the inner cavity of the fixed frame 3 is located below the positioning unit and is provided with a shelf 14. The surface of the shelf 14 is provided with a plurality of oblique grooves 15, and the lower surface of the shelf 14 is provided with a liquid storage chamber 5. The oblique grooves 15 are inverted truncated cone structures. Two groups of metal workpieces of different types are installed in the rotating roller 4 above the shelf 14. The rotating roller 4 is in a rotating state during spraying, so that the spraying is uniform. Then, the spraying liquid enters the liquid storage chamber 5 along the oblique grooves 15 for collection, and the spraying liquid in the liquid storage chamber 5 is returned to the liquid supply device at the top of the coating chamber through a circulation pump to achieve recycling. Since the oblique grooves 15 adopt a larger upper and smaller lower shape, the hot air entering is reduced during drying.

[0028] See Figure 1 As shown, an air inlet 2 is provided in the middle of the top surface of the furnace body 1, and a fan is installed inside the air inlet 2. A heating pipe is provided under the fan, and an exhaust port 6 is provided at the bottom of the furnace body 1; a coating liquid chamber is provided on one side of the furnace body 1 in the opposite direction of the exhaust port 6, and fixed blocks 9 are fixed on both sides of the coating liquid chamber and the interior of the furnace body 1. A transmission screw 8 driven by a forward and reverse motor is installed between the two fixed blocks 9 on one side, and a limiting rod is installed between the two fixed blocks 9 on the other side. The external thread of the transmission screw 8 is sleeved with a transmission block 7, and a slide is installed on the external sliding of the limit rod. The top ends of the transmission block 7 and the slide are fixed to the bottom surface of the fixed frame 3. Initially, the fixed frame 3 is located in the coating liquid chamber, and the coating liquid chamber sprays paint on the two groups of metal workpieces in the fixed frame 3. After spraying, the transmission block 7 is driven by the transmission screw 8 and drives the fixed frame 3 to move from the spraying chamber to the furnace body 1 for convenient drying. The stable movement of the fixed frame 3 is ensured by the setting of the limit rod and the slide.

[0029] When the utility model is in use, metal workpieces of the same size are placed in multiple positioning units in the same group of positioning components, that is, the end of the metal workpiece contacts the slope 16, and the positioning block 13 is pushed to slide on the outside of the rotating roller 4. The outer surface of the end of the metal workpiece is fixed by the two positioning blocks 13, and then the transmission rod 18 is pulled, and the inserted end of the transmission rod 18 moves in the fixing rod 17, so that the length of the transmission rod 18 and the fixing rod 17 is increased. The angle of the rotating rod 20 is changed by rotating the motor so that the contact block 21 is fitted with the outer surface of the metal workpiece, effectively fixing the metal workpiece to avoid falling off due to overturning, spraying and drying. Metal workpieces of another specification are installed in the same way, so that different types of metal workpieces can be sprayed and dried at the same time, thereby improving production efficiency.

[0030] By rotating the roller 4 to rotate the spraying and drying method, the spraying and baking area is wider, and multiple sprayings are applied to cover different areas of the metal workpiece. After spraying evenly, baking is performed, the baking surface is changed, and the drying time is shortened.

[0031] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A metal surface spray drying furnace, comprising a furnace body (1) for drying the metal surface after spraying, characterized in that: The internal transmission of the furnace body (1) is equipped with a fixed frame (3), and a rotating roller (4) is rotatably installed on the upper part of the inner cavity of the fixed frame (3). The outer surface of the rotating roller (4) is provided with two sets of upper and lower positioning components for limiting different metal workpieces, and the outer surface of the rotating roller (4) is provided with an inwardly recessed groove. Each set of positioning components includes a plurality of positioning units, and the positioning units include two positioning blocks (13) slidingly arranged on the outer surface of the rotating roller (4). The inner side surfaces of the two positioning blocks (13) are both provided with a slope (16), and the end surface of the positioning block (13) is fixed with a fixing rod (17); A transmission rod (18) is elastically mounted on one end of the fixed rod (17), and a rotating rod (20) is driven at the end of the transmission rod (18) by a rotary motor. A contact block (21) is provided at the end of the inner surface of the rotating rod (20) and is in contact with a metal surface.

2. A metal surface spray drying furnace according to claim 1, characterized in that: The outer surface of the rotating roller (4) is provided with a slide groove (10), one end of the inner wall of the slide groove (10) is installed with a spring (11), the end of the spring (11) is fixedly connected with a slider (12) that slides in the slide groove (10), and the outer end surface of the slider (12) is fixed to the surface of the positioning pressure block (13).

3. The metal surface spray drying furnace according to claim 1, characterized in that: A movable card cavity is provided inside the fixed rod (17), and the inserted end of the transmission rod (18) slides in the movable card cavity. The inserted end of the transmission rod (18) is sleeved with a second spring (19), and one end of the second spring (19) is fixed to the inner wall surface of the movable card cavity.

4. The metal surface spray drying furnace according to claim 1, characterized in that: An air inlet (2) is provided in the middle of the top surface of the furnace body (1), a fan is installed inside the air inlet (2), a heating tube is provided below the fan, and an exhaust port (6) is provided at the bottom of the furnace body (1).

5. The metal surface spray drying furnace according to claim 1, characterized in that: The inner cavity of the fixing frame (3) is provided with a shelf (14) below the positioning unit, the surface of the shelf (14) is provided with a plurality of oblique grooves (15), and the lower surface of the shelf (14) is provided with a liquid storage cavity (5), and the oblique grooves (15) are inverted truncated cone structures.

6. The metal surface spray drying furnace according to claim 1, characterized in that: A coating liquid chamber is provided on one side of the furnace body (1) in a direction opposite to the exhaust port (6), and fixed blocks (9) are fixed on both sides of the coating liquid chamber and the interior of the furnace body (1). A transmission screw (8) driven by a forward and reverse motor is installed between the two fixed blocks (9) on one side, and a limiting rod is installed between the two fixed blocks (9) on the other side. The external thread of the transmission screw (8) is sleeved with a transmission block (7), and a slide seat is slidably installed on the outside of the limiting rod. The top ends of the transmission block (7) and the slide seat are fixed to the bottom surface of the fixed frame (3).

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