Hot air circulating oven

Abstract

A hot air circulation drying oven belongs to the technical field of hot air circulation drying ovens and comprises a hot air circulation drying oven body, a driving and rotating bearing device is mounted in the hot air circulation drying oven body, a plurality of piece carrying baskets are detachably mounted on the upper surface of the driving and rotating bearing device, and the driving and rotating bearing device comprises a servo motor and a carrying disc. The servo motor is fixedly installed on the lower surface of the hot air circulation drying oven body, the output end of the servo motor is arranged in an inner cavity of the hot air circulation drying oven body in a penetrating mode, a rotating column is fixedly welded to the center of the lower surface of the carrying disc, and the output end of the servo motor is fixedly connected with the rotating column through a coupler. A heated workpiece can be placed in the workpiece carrying basket and is driven by the driving and rotating bearing device to rotate at a constant speed in the heated area in the hot air circulation drying oven body, the heated surface of the workpiece is continuously adjusted in the movement process, it is guaranteed that the outer surface of the workpiece can be evenly heated, and then the quality of the workpiece after hot working is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hot -blast circulation oven technical field, concretely relates to a hot -blast circulation oven. BACKGROUND

[0002] In industrial production, hot -blast circulation oven is widely used in the heating treatment of workpiece of various industries by the principle of hot air convection.

[0003] But in actual application, workpiece is generally placed in the oven by the aid of the carrier, and workpiece is in a fixed position when heated, and uneven heating often occurs. The air flow in the oven is complex, the air flow rate is fast near the hot air inlet and the fan outlet, and the workpiece is heated well, while the air flow rate is slow in the corner, the edge and the area far from the hot air source, and the workpiece is not heated enough. In addition, the shape, size and placement of the workpiece also interfere with the circulation of hot air, causing uneven heating, resulting in inconsistent product surface quality after drying, affecting the overall product quality. Therefore, another hot -blast circulation oven is provided to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a hot -blast circulation oven for solving the problem of uneven heating of the workpiece in the hot -blast circulation oven in the prior art, which is in a fixed position in the oven during operation, affecting the product quality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A hot -blast circulation oven, comprising a hot -blast circulation oven main body, a drive rotation bearing device is installed in the hot -blast circulation oven main body, a plurality of workpiece baskets are detachably installed on the upper surface of the drive rotation bearing device, and the plurality of workpiece baskets are in a stacked state.

[0007] In the above technical scheme, the drive rotation bearing device comprises a servo motor and a carrier disc, the servo motor is fixedly installed on the lower surface of the hot -blast circulation oven main body, the output end of the servo motor is arranged in the inner cavity of the hot -blast circulation oven main body, a rotating column is fixedly installed at the center of the lower surface of the carrier disc, the output end of the servo motor is fixedly connected with the rotating column through a shaft coupling, and six connecting holes A are equidistantly arranged on the upper surface of the carrier disc.

[0008] In the above technical scheme, the workpiece basket comprises a metal ring, a hollow blocking ring is fixedly installed on the lower surface of the metal ring, a bottom supporting ring is fixedly installed on the lower surface of the hollow blocking ring, a hollow supporting plate is placed on the upper surface of the bottom supporting ring, the outer surface of the hollow supporting plate is attached to the inner surface of the hollow blocking ring, three cross connecting rods are equidistantly fixedly installed on the lower surface of the metal ring, and the cross connecting rods are insertedly installed in the corresponding connecting holes A.

[0009] In the technical scheme, the upper surface of the metal ring is provided with three connection holes B at equal intervals in the circumferential direction, and the size of the connection hole B is the same as that of the connection hole A.

[0010] In the technical scheme, the lower surface of the carrier disc is fixedly installed with four stainless steel universal ball wheels at equal intervals in the circumferential direction, and the bottom of the stainless steel universal ball wheel is arranged to roll on the bottom of the inner cavity of the hot air circulating oven main body.

[0011] In the technical scheme, the outer surface of the metal ring is fixedly installed with two handles symmetrically.

[0012] In the technical scheme, the right surface of the hot air circulating oven main body is fixedly installed with a controller, and the controller is electrically connected with the servo motor.

[0013] Compared with the prior art, the hot air circulating oven has the beneficial effects that:

[0014] Firstly, the driven rotating bearing device and the carrier basket are arranged, the workpiece to be heated can be placed in the carrier basket, and the workpiece to be heated can rotate at a uniform speed in the heating area in the hot air circulating oven main body under the driving of the driven rotating bearing device. This movement process continuously adjusts the heating surface of the workpiece, ensures that the outer surface of the workpiece can be uniformly heated, and effectively guarantees the quality of the workpiece after hot processing.

[0015] Secondly, the hollow supporting plate in the carrier frame is arranged as a detachable structure, so that when facing the placement demand of a higher workpiece in actual application, the hollow supporting plate in part of the carrier frame can be flexibly detached, and then a plurality of carrier frames are assembled together by means of the close cooperation of the cross connecting rod and the connection hole B. This design effectively enhances the applicability of the carrier basket to workpieces of different heights, and greatly expands the use scenarios and functional range of the carrier basket. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the driven rotating bearing device of the utility model.

[0018] Figure 3 It is a schematic diagram of the explosion structure of the carrier basket of the utility model.

[0019] Figure 4 It is a schematic diagram of the structure of the carrier basket in the first use state of the utility model.

[0020] Figure 5 It is a schematic diagram of the structure of the carrier basket in the second use state of the utility model.

[0021] Figures 1-5 The components include: 1. Hot air circulating oven body; 11. Controller; 2. Drive bearing device; 21. Servo motor; 22. Carrier tray; 221. Connecting hole A; 23. Stainless steel universal ball wheel; 3. Carrier basket; 31. Metal ring; 311. Connecting hole B; 312. Cross connecting rod; 313. Handle; 32. Hollowed-out retaining ring; 33. Bottom support ring; 34. Hollowed-out tray. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-5 This utility model provides a technical solution:

[0024] A hot air circulating oven includes a hot air circulating oven body 1 with air inlets and outlets arranged opposite each other on the inner cavity sidewall. A drive-carrying device 2 is installed inside the hot air circulating oven body 1. Multiple stacked carrier baskets 3 are detachably installed above the drive-carrying device 2.

[0025] like Figure 2 As shown, the drive bearing device 2 includes a servo motor 21 and a carrier plate 22. The servo motor 21 is fixedly installed on the lower surface of the hot air circulating oven body 1, and the output end of the servo motor 21 is disposed through the inner cavity of the hot air circulating oven body 1. A rotating column is welded and fixedly installed at the center of the lower surface of the carrier plate 22. The output end of the servo motor 21 is fixedly connected to the rotating column through a coupling. Six connecting holes A221 are circumferentially and equidistantly opened on the upper surface of the carrier plate 22. The connecting holes A221 are used to install the carrier basket 3.

[0026] When the servo motor 21 is started, it can drive the carrier plate 22 to rotate using the rotating column, thereby driving the workpiece basket 3 installed above the carrier plate 22 to rotate, so that the workpiece placed in the workpiece basket 3 can rotate to adjust the heating position, ensuring the uniformity of heating, thereby improving the quality of the dried workpiece.

[0027] Servo motor 21 is a forward and reverse pulse motor, which is electrically connected to the power supply terminal of the hot air circulating oven body 1, and as shown in the figure. Figure 1As shown, the rear surface of the hot air circulating oven body 1 is fixedly installed with a controller 11, the controller 11 is electrically connected with the servo motor 21, the controller 11 is used to control the opening and closing and the rotating speed of the servo motor 21, the rotating speed control of the servo motor 21 is generally set according to the size of the workpiece, the workpiece with regular shape and small size can be uniformly heated at low rotating speed, and the rotating speed may be 5-10 revolutions per minute. In order to avoid uneven local heating, the workpiece with irregular shape or large size may need higher rotating speed, for example, 15-30 revolutions per minute.

[0028] In addition, in order to strengthen the bearing strength of the carrier disc 22, four stainless steel universal ball wheels 23 are fixedly installed on the lower surface of the carrier disc 22 at equal intervals in the circumferential direction, the stainless steel universal ball wheels 23 are fixedly connected between the carrier disc 22 through bolts, and the bottoms of the stainless steel universal ball wheels 23 are rollingly arranged at the bottom of the inner cavity of the hot air circulating oven body 1.

[0029] As shown in the figure, Figure 3 The carrier basket 3 comprises a metal ring 31 made of alloy steel, three connecting holes B311 are formed on the upper surface of the metal ring 31 at equal intervals in the circumferential direction, the hole diameters of the connecting holes B311 are the same as the size of the connecting holes A221, a hollow retaining ring 32 is fixedly installed on the lower surface of the metal ring 31 by welding, a bottom supporting ring 33 is installed on the bottom of the hollow retaining ring 32 by welding, a hollow supporting plate 34 is placed on the bottom supporting ring 33, the outer diameter of the hollow supporting plate 34 is the same as the inner diameter of the hollow retaining ring 32, the hollow supporting plate 34 is used to place the heated workpiece, the hollow supporting plate 34 can be manually lifted up and removed, and the hollow retaining ring 32 is used to shield the heated workpiece to prevent it from separating from the hollow supporting plate 34.

[0030] Three cross connecting rods 312 are fixedly installed on the lower surface of the metal ring 31 at equal intervals in the circumferential direction by welding, the cross connecting rods 312 are inserted and installed in the connecting holes A221 of the carrier disc 22, which can realize the installation of the carrier basket 3 above the carrier disc 22, and the cross connecting rods 312 are inserted and installed in the connecting holes B311 of the metal ring 31, which can stack two carrier baskets 3 together.

[0031] The hollow supporting plate 34 is detachable, which has the advantage that when multiple carrier baskets 3 are used together, if it is necessary to place a higher workpiece, the hollow supporting plate 34 in the upper carrier basket 3 can be removed, as shown in the figure, Figure 5 Only the hollow supporting plate 34 is placed in the lowermost carrier basket 3, and multiple carrier baskets 3 can be assembled into a larger carrier mechanism suitable for placing higher workpieces.

[0032] Finally, in order to facilitate the movement of the carrier basket 3, handles 313 are fixedly installed on the outer surface of the metal ring 31.

[0033] The working principle is that, in use, according to the size of the heated workpiece,Figure 5 As shown, the plurality of carriers baskets 3 are appropriately stacked to meet the workpiece placement requirements. When splicing, the connecting hole B311 on the lower metal ring 31 is visually observed, the cross connecting rod 312 of the upper carrier basket 3 is inserted into the connecting hole B311. After the completion of the stacking and splicing, the position of the connecting hole A221 on the carrier disc 22 is visually observed, the cross connecting rod 312 of the lowermost carrier basket 3 is inserted into the connecting hole A221 to complete the connection with the driving carrier bearing device 2. After the completion of the stacking and splicing, the heated workpieces are placed between the plurality of carrier baskets 3, the door behind the hot air circulating oven body 1 is started, and the servo motor 21 is started to work through the controller 11. The servo motor 21 drives the carrier disc 22 and the carrier baskets 3 and the workpieces above at a predetermined speed to rotate uniformly and be heated. Compared with the prior art, the hot air circulating oven can uniformly drive the workpieces to adjust the heating surface of the workpieces in the heating area, so that the workpieces are uniformly heated, and the processing quality of the workpieces is guaranteed.

Claims

1. A hot air circulation oven comprising a hot air circulation oven main body (1), characterized by, The hot air circulation oven body (1) is provided with a driving rotation bearing device (2), a plurality of carrier baskets (3) are detachably installed on the upper surface of the driving rotation bearing device (2), the plurality of carrier baskets (3) are in a stacked state, the driving rotation bearing device (2) comprises a servo motor (21) and a carrier disc (22), the servo motor (21) is fixedly installed on the lower surface of the hot air circulation oven body (1), and the output end of the servo motor (21) penetrates the inner cavity of the hot air circulation oven body (1), a rotating column is welded and fixedly installed at the center of the lower surface of the carrier disc (22), the output end of the servo motor (21) is fixedly connected with the rotating column through a shaft coupling, six connection holes A (221) are equidistantly formed in the upper surface of the carrier disc (22) in a circumferential direction, the carrier basket (3) comprises a metal ring (31), a hollow blocking ring (32) is fixedly installed on the lower surface of the metal ring (31), a bottom supporting ring (33) is fixedly installed on the lower surface of the hollow blocking ring (32), a hollow supporting plate (34) is placed on the upper surface of the bottom supporting ring (33), the outer surface of the hollow supporting plate (34) is attached to the inner surface of the hollow blocking ring (32), and three cross connecting rods (312) are equidistantly fixedly installed on the lower surface of the metal ring (31).

2. A hot air circulation oven according to claim 1, wherein, The upper surface of the metal ring (31) is equidistantly provided with three connection holes B (311) in a circumferential direction, and the size of the connection hole B (311) is the same as that of the connection hole A (221).

3. A hot air circulation oven according to claim 2, wherein, The lower surface of the carrier disc (22) is equidistantly fixedly provided with four stainless steel universal ball wheels (23), and the bottom of the stainless steel universal ball wheel (23) is rollingly arranged at the bottom of the inner cavity of the hot air circulation oven body (1).

4. A hot air circulation oven according to claim 3, wherein, The outer surface of the metal ring (31) is symmetrically fixedly provided with two handles (313).

5. A hot air circulation oven according to claim 4, wherein, The right surface of the hot air circulation oven body (1) is fixedly provided with a controller (11), and the controller (11) is electrically connected with the servo motor (21).

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