Hot air circulation drying device for coating line

Abstract

The hot air circulation drying device for the coating line comprises a machine frame with the section in a concave shape with an upward opening, the upper surface of the machine frame is fixedly connected with a drying box, the machine frame is rotationally connected with two first shafts and four second shafts in a penetrating mode through bearings, and the side wall of the machine frame is fixedly connected with a servo motor through a support. Wherein one first shaft is fixedly connected with an output shaft of a servo motor, the first shafts are fixedly connected with first rollers in a penetrating mode, the second shafts are fixedly connected with second rollers in a penetrating mode, the two first rollers are jointly matched with a first conveying belt, and the two corresponding second rollers are jointly matched with a second conveying belt. The two first shafts are fixedly connected with first belt wheels in a penetrating mode, and the two second shafts close to the first conveying belt are fixedly connected with second belt wheels in a penetrating mode. According to the drying device, sufficient drying can be guaranteed while the machining efficiency is guaranteed, it can be guaranteed that parts enter the drying box in order, and accumulation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying device technical field especially relates to hot air circulation drying device for coating line. BACKGROUND

[0002] Coating line is the production line for coating operation, and coating technology is widely used in various fields, such as building, automobile, furniture, household appliance, etc., coating technology can not only improve the appearance and corrosion resistance of parts, but also protect parts from corrosion and wear, in coating process, generally need to go through pretreatment, coating construction, drying or solidification, quality detection and other steps, drying or solidification step is to adopt natural drying, baking drying or infrared drying, etc., so that the coating is quickly solidified, drying is generally carried out in drying device, parts are sent into drying device through conveying belt, drying is carried out, through drying of drying device, the adhesion and wear resistance of coating are improved, and the quality and stability of coating are ensured.

[0003] In the prior art, the speed of the conveying belt does not change during conveying, and the faster conveying speed cannot effectively dry, and the slower conveying speed will affect the conveying efficiency of the dried parts to the next processing step. UTILITY MODEL CONTENT

[0004] The utility model discloses a hot air circulation drying device for coating line, which is provided to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The hot air circulation drying device for coating line comprises a rack with a cross section in the shape of an open-up concave letter, a drying box is fixedly connected to the upper surface of the rack, two first shafts and four second shafts are rotatably connected to the rack through bearings, a servo motor is fixedly connected to the side wall of the rack through a support, one of the first shafts is fixedly connected to the output shaft of the servo motor, a first roller is fixedly connected to the first shaft, a second roller is fixedly connected to the second shaft, two first rollers are jointly matched with a first conveying belt, and two second rollers are jointly matched with a second conveying belt, a first pulley is fixedly connected to each of the first shafts, a second pulley is fixedly connected to each of the second shafts close to the first conveying belt, and a synchronous belt is jointly matched with the first pulley and the corresponding second pulley.

[0007] Preferably, the drying box is rotatably connected to two third shafts through bearings, a plurality of baffles are fixedly connected to the side walls of the third shafts, a turntable is fixedly connected to one end of the third shaft outside the drying box, fixed columns are fixedly connected to the side wall of the turntable, and a connecting rod is rotatably connected to the two fixed columns through bearings.

[0008] Preferably, a hot air blower is fixedly connected through the side wall of the drying box.

[0009] Preferably, a damping washer is arranged at the rotating connection between the third shaft and the drying box.

[0010] Preferably, the diameter of the first pulley is greater than that of the second pulley.

[0011] Preferably, the surfaces of the first and second conveying belts are engraved with anti-skid lines.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] 1. The first conveying belt is driven by a servo motor, and the transmission of the first pulley, the second pulley and the synchronous belt enables the second conveying belt to move. The first conveying belt has a smaller conveying speed than the second conveying belt due to the different diameters of the first and second pulleys, so that the parts are slowly conveyed in the drying box, and are quickly conveyed before and after entering the drying box, thereby ensuring the processing efficiency.

[0014] 2. The third shaft and the baffle are arranged to allow a part to enter the drying box only after another part leaves the drying box, thereby avoiding the accumulation of parts in the drying box due to the too fast conveying of the front part, and affecting the drying effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The present application is a structure diagram of a hot air circulation drying device for a coating line.

[0016] Figure 2 The present application is a structure diagram of a hot air circulation drying device for a coating line. Figure 1 The present application is a structure diagram of a hot air circulation drying device for a coating line.

[0017] Figure 3 The present application is a structure diagram of a hot air circulation drying device for a coating line.

[0018] Figure 4 The present application is a structure diagram of a hot air circulation drying device for a coating line.

[0019] In the figure: 1 frame, 2 drying box, 3 first shaft, 4 servo motor, 5 second shaft, 6 first roller, 7 first conveying belt, 8 second roller, 9 second conveying belt, 10 first pulley, 11 second pulley, 12 synchronous belt, 13 third shaft, 14 baffle, 15 rotating disc, 16 fixed column, 17 connecting rod, 18 hot air blower. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 The hot air circulating drying device for the coating line includes a frame 1 with an upward-facing U-shaped cross-section. A drying chamber 2 is fixedly connected to the upper surface of the frame 1. The frame 1 is rotatably connected to two first shafts 3 and four second shafts 5 (only two are shown in the figure) through bearings. A servo motor 4 is fixedly connected to the side wall of the frame 1 through a bracket. One of the first shafts 3 is fixedly connected to the output shaft of the servo motor 4. A first roller 6 is fixedly connected through the first shaft 3. A second roller 8 is fixedly connected through the second shaft 5. The two first rollers 6 cooperate with a first conveyor belt 7. The two corresponding second rollers 8 cooperate with a second conveyor belt 9. A first pulley 10 is fixedly connected through the two first shafts 3. A second pulley 11 is fixedly connected through the two second shafts 5 near the first conveyor belt 7. A synchronous belt 12 cooperates with the first pulley 10 and the corresponding second pulley 11.

[0022] The drying chamber 2 is rotatably connected to two third shafts 13 through bearings. Multiple baffles 14 are fixedly connected to the side walls of the two third shafts 13. A turntable 15 is fixedly connected to one end of the third shaft 13 located outside the drying chamber 2. A fixed column 16 is fixedly connected to the side wall of the turntable 15. The two fixed columns 16 are rotatably connected to a connecting rod 17 through bearings.

[0023] A hot air blower 18 is fixedly connected through the side wall of the drying oven 2.

[0024] A damping washer is provided at the rotating connection between the third shaft 13 and the drying box 2. The damping washer creates a certain frictional force during the rotation of the third shaft 13. Since the first conveyor belt 7 is driven by the same motor, it has a slow conveying speed but a large conveying force, while the second conveyor belt 9 has a fast conveying speed but a small conveying force. Due to the existence of this frictional force, when the parts conveyed by the first conveyor belt 7 push the baffle 14, the third shaft 13 can rotate. However, when the parts conveyed by the second conveyor belt 9 come into contact with the baffle 14, its conveying force is insufficient to make the third shaft 13 rotate.

[0025] The diameter of the first pulley 10 is larger than that of the second pulley 11. By setting the pulley diameter, the conveying speed of the first conveyor belt 7 is lower than that of the second conveyor belt 9.

[0026] The surfaces of both the first conveyor belt 7 and the second conveyor belt 9 are engraved with anti-slip patterns. The anti-slip patterns increase the friction between the first conveyor belt 7, the second conveyor belt 9 and the components, thereby conveying the components through friction.

[0027] In this invention, the parts to be dried are placed on the second conveyor belt 9, and the servo motor 4 is turned on. The servo motor 4 drives the first shaft 3 to rotate, the first shaft 3 drives the first roller 6 to rotate, and the first roller 6 drives the first conveyor belt 7 to move. At the same time, through the transmission of the first pulley 10, the second pulley 11, and the synchronous belt 12, the second shaft 5 rotates, the second shaft 5 drives the second roller 8 to rotate, and the second roller 8 drives the second conveyor belt 9 to transport the parts. The second conveyor belt 9 accelerates the transport of the parts. When the parts are transported to the baffle 14, and the first part enters the drying chamber 2, the baffle 14 is manually pushed so that the zero-part parts are transported to the drying chamber 2. The parts enter the drying chamber 2, and the hot air blower 18 is turned on. The hot air blower heats and circulates the air for drying. The parts are slowly conveyed in the drying chamber 2 by the first conveyor belt 7. The parts that do not enter are blocked by the baffle 14 until the dried parts come into contact with the second set of baffles 14 and push the second set of baffles 14, causing the second set of third shafts 13 to rotate. Driven by the fixed column 16 and the connecting rod 17, the two turntables 15 rotate synchronously, which in turn causes the first set of baffles 14 to rotate, and the next part to be dried is placed into the drying chamber 2. This process is repeated to dry the parts.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hot air circulating drying device for a coating line, comprising a frame (1) with an upward-facing U-shaped cross-section, characterized in that, A drying chamber (2) is fixedly connected to the upper surface of the frame (1). The frame (1) is rotatably connected to two first shafts (3) and four second shafts (5) through bearings. A servo motor (4) is fixedly connected to the side wall of the frame (1) through a bracket. One of the first shafts (3) is fixedly connected to the output shaft of the servo motor (4). A first roller (6) is fixedly connected through the first shaft (3). A second roller (8) is fixedly connected through the second shaft (5). The two first rollers (6) cooperate with a first conveyor belt (7). The two corresponding second rollers (8) cooperate with a second conveyor belt (9). A first pulley (10) is fixedly connected through the two first shafts (3). A second pulley (11) is fixedly connected through the two second shafts (5) near the first conveyor belt (7). A synchronous belt (12) cooperates with the first pulley (10) and the corresponding second pulley (11).

2. The hot air circulating drying device for a coating line according to claim 1, characterized in that, The drying box (2) is rotatably connected to two third shafts (13) through bearings. Multiple baffles (14) are fixedly connected to the side walls of the two third shafts (13). A turntable (15) is fixedly connected to one end of the third shaft (13) located outside the drying box (2). A fixed column (16) is fixedly connected to the side wall of the turntable (15). The two fixed columns (16) are rotatably connected to a connecting rod (17) through bearings.

3. The hot air circulating drying device for a coating line according to claim 1, characterized in that, A hot air blower (18) is fixedly connected through the side wall of the drying oven (2).

4. The hot air circulating drying device for a coating line according to claim 2, characterized in that, A damping washer is provided at the rotatable connection between the third shaft (13) and the drying box (2).

5. The hot air circulating drying device for a coating line according to claim 1, characterized in that, The diameter of the first pulley (10) is greater than the diameter of the second pulley (11).

6. The hot air circulating drying device for a coating line according to claim 1, characterized in that, The surfaces of the first conveyor belt (7) and the second conveyor belt (9) are both engraved with anti-slip patterns.

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