Continuous heat treatment device for finish rolling nuts

Abstract

The utility model discloses a finish rolling nut continuous heat treatment device which comprises a machine frame, a heating box is installed on the machine frame, box doors are hinged to an inlet and an outlet of the heating box, a plurality of conveying shafts are installed in the machine frame in a rotating mode, the conveying shafts are in transmission connection through a chain transmission assembly, and a plurality of sleeves are installed on the chain transmission assembly. The box door is pushed open through the T-shaped shafts, so that the conveying shaft can convey the tray and the nuts on the tray into the heating box, after conveying is completed, the box door can reset between the two T-shaped shafts, a driving motor does not need to be arranged, and damage to the driving motor is reduced; the supporting block or the nut body with the same thickness as the nut is placed on the base plate, so that the movable frame can be lifted by a proper length in the guide frame, the T-shaped shaft can be lifted by the movable frame when passing through the movable frame, the deflection angle of the T-shaped shaft to the box door is changed, deflection of the box door can adapt to nuts of different specifications, and adjustment is more convenient and faster.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment equipment for precision rolled nuts, and in particular to a continuous heat treatment equipment for precision rolled nuts. Background Technology

[0002] Heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing techniques, heat treatment generally does not change the shape and overall chemical composition of the workpiece. Instead, it improves or enhances the performance of the workpiece by changing the internal microstructure or the chemical composition of the surface. Its characteristic is that it improves the internal quality of the workpiece, which is generally not visible to the naked eye.

[0003] In the existing technology, the production process of precision rolled nuts requires heat treatment to improve their strength. During heating, the precision rolled nuts are usually placed on a tray and then sent into the heating box in turn for heat treatment.

[0004] However, this method requires continuous control of the heating box door's rise and fall during continuous conveying, which causes significant damage to the drive motor. Furthermore, when conveying precision rolled nuts of different specifications, the control program needs to be adjusted to regulate the degree of door lifting and lowering to prevent heat loss, which is quite troublesome. Utility Model Content

[0005] Therefore, it is necessary to provide a continuous heat treatment apparatus for precision rolled nuts to address the aforementioned technical problems.

[0006] To achieve the above objectives, this utility model provides a continuous heat treatment device for precision rolled nuts, including a frame on which a heating chamber is mounted. The heating chamber has hinged doors at both its inlet and outlet. Several conveying shafts are rotatably mounted inside the frame and are connected to each other via a chain drive assembly. Several sleeves are mounted on the chain drive assembly, and T-shaped shafts are slidably engaged within each sleeve. A guide frame is mounted on the heating chamber, located on both sides of the door. The guide frame cooperates with the T-shaped shafts, and a movable frame is slidably engaged within the guide frame. A pad is installed inside the heating chamber, with the height of the pad greater than the height of the tray.

[0007] Preferably, a rotary drive device is mounted on the frame, and the output end of the rotary drive device is connected to one of the conveyor shafts.

[0008] Preferably, the heating box is hinged with a heat insulation plate, and the heat insulation plate has a chamfer.

[0009] Preferably, the T-shaped shaft has a chamfer on the side near the guide frame and a rounded corner on the side near the door.

[0010] Preferably, ball bearings are rotatably mounted on the T-shaped shaft.

[0011] Preferably, there are two chain drive assemblies, located at both ends of the conveyor shaft, and the T-shaped shafts on the two chain drive assemblies are symmetrically arranged.

[0012] Compared with existing technologies, this technical solution has at least one of the following beneficial effects:

[0013] 1. The door is pushed open by the T-shaped shaft, so that the conveyor shaft can transport the tray and the nuts on it into the heating box. After the transport is completed, the door can be reset between the two T-shaped shafts, so there is no need to set up a drive motor, which reduces the damage to the drive motor.

[0014] 2. Placing a support block or nut body of the same thickness as the nut on the pad allows the moving frame to rise to a suitable length within the guide frame. This allows the T-shaped shaft to be raised as it passes through the moving frame, changing the deflection angle of the T-shaped shaft relative to the door. The deflection of the door can accommodate nuts of different specifications, and the adjustment is more convenient and quick. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0016] Figure 2 This is a partial perspective view of the guide frame according to an embodiment of the present invention;

[0017] Figure 3 This is a perspective view of a sleeve and a T-shaped shaft according to an embodiment of the present invention;

[0018] Figure 4 This is a three-dimensional movable frame according to an embodiment of the present utility model;

[0019] In the diagram, 1 is the frame; 2 is the heating chamber; 3 is the chamber door; 4 is the conveyor shaft; 5 is the chain drive assembly; 6 is the sleeve; 7 is the T-shaft; 8 is the guide frame; 9 is the moving frame; 10 is the pad; 11 is the rotary drive device; 12 is the heat insulation plate; and 13 is the ball bearing. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Please see Figures 1 to 4This application provides a continuous heat treatment device for precision rolled nuts, including a frame 1. A heating chamber 2 is mounted on the frame 1. Both the inlet and outlet of the heating chamber 2 are hinged with doors 3, preferably made of lightweight heat-insulating material. Several conveyor shafts 4 are rotatably mounted inside the frame 1, and these shafts are connected by a chain drive assembly 5. The chain drive assembly 5 includes sprockets and chains, and several sleeves 6 are mounted on the chain drive assembly 5. T-shaped shafts 7 are slidably engaged within the sleeves 6. Guide frames 8 are mounted on the heating chamber 2, located on both sides of the doors 3. The guide frames 8 cooperate with the T-shaped shafts 7, and movable frames 9 are slidably engaged within the guide frames 8. A pad 10 is installed inside the heating chamber 2, with the height of the pad 10 greater than the height of the tray. The guide frames 8 at both doors 3 should face the same direction.

[0022] In this embodiment, a drive motor mounted on the frame 1 drives one of the conveyor shafts 4, thereby driving several conveyor shafts 4 to rotate via the chain drive assembly 5. This allows the tray and precision-rolled nuts placed on the conveyor shafts 4 to be conveyed into the heating chamber 2 for heat treatment. While the chain drive assembly 5 drives the conveyor shafts 4 to rotate, the T-shaped shaft 7 inside the upper sleeve 6 is also driven forward by the chain drive assembly 5. This T-shaped shaft 7 pushes the hinged door 3 on the heating chamber 2, causing the door 3 to deflect, thus allowing the tray on the conveyor shaft 4 to be fed into the heating chamber 2. When processing nuts of different specifications, a support block of the same thickness as the nut or one of the nuts can be placed on the pad 10, with the top of the nut abutting against the guide frame 8. The guide frame 8 can be raised to different distances depending on the thickness of the nuts. After the T-shaped shaft 7 is lifted by the chain drive assembly 5 through the guide frame 8, it can continue to be lifted and moved along the moving frame 9, so that the box door 3 can be deflected at different angles. This allows nuts of different specifications on the tray to be transported into the heating box 2 with less heat loss from the box door 3. The top of the conveyor shaft 4 is flush with the bottom plate of the heating box 2. The purpose of the pad 10 being higher than the height of the tray is to ensure that there is a gap between the two T-shaped shafts 7. After the box door 3 is lifted by the previous T-shaped shaft 7, it will rotate a certain distance before being pushed by the next T-shaped shaft 7. In order to avoid the rotating box door 3 pushing the nuts on the tray, the pad 10 is set higher to increase the deflection angle of the box door 3, so that it will not collide with the nuts when rotating.

[0023] In some embodiments, in order to facilitate the driving of the conveyor shaft 4 to rotate, a rotary drive device 11 is installed on the frame 1. The rotary drive device 11 is preferably a servo motor, so that the box door 3 can be rotated and reset between the two T-shaped shafts 7. The output end of the rotary drive device 11 is connected to one of the conveyor shafts 4.

[0024] In some embodiments, to reduce heat loss at the movable frame 9, a heat insulation plate 12 is hinged to the heating box 2, and the heat insulation plate 12 has a chamfer. The chamfer facilitates the deflection of the heat insulation plate 12.

[0025] In some embodiments, in order to reduce wear when the T-shaped shaft 7 pushes the box door 3 and is lifted by the guide frame 8, a chamfer is provided on the side of the T-shaped shaft 7 near the guide frame 8, and a rounded corner is provided on the side of the T-shaped shaft 7 near the box door 3.

[0026] In some embodiments, to further reduce wear between the T-shaft 7 and the guide frame 8, ball bearings 13 are rotatably mounted on the T-shaft 7.

[0027] In some embodiments, to facilitate pushing the door 3, two chain drive assemblies 5 are located at both ends of the conveyor shaft 4, and the T-shaped shafts 7 on the two chain drive assemblies 5 are symmetrically arranged. Thus, the T-shaped shafts 7 can push the door 3 from both sides. Correspondingly, the guide frame 8 and the movable frame 9 are also symmetrically arranged.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A continuous heat treatment apparatus for precision rolled nuts, comprising a frame (1), wherein a heating chamber (2) is mounted on the frame (1), and the inlet and outlet of the heating chamber (2) are both hinged with chamber doors (3), characterized in that, The frame (1) is rotatably installed with several conveyor shafts (4), which are connected by a chain drive assembly (5). Several sleeves (6) are installed on the chain drive assembly (5), and a T-shaped shaft (7) is slidably engaged in the sleeves (6). A guide frame (8) is installed on the heating box (2), which is located on both sides of the box door (3). The guide frame (8) is matched with the T-shaped shaft (7). A movable frame (9) is slidably engaged in the guide frame (8). A pad (10) is installed in the heating box (2), and the height of the pad (10) is greater than the height of the tray.

2. The continuous heat treatment apparatus for precision rolled nuts according to claim 1, characterized in that, A rotary drive device (11) is installed on the frame (1), and the output end of the rotary drive device (11) is connected to one of the conveying shafts (4) for transmission.

3. The continuous heat treatment apparatus for precision rolled nuts according to claim 1, characterized in that, A heat insulation plate (12) is hinged to the heating box (2), and the heat insulation plate (12) has a chamfer.

4. The continuous heat treatment apparatus for precision rolled nuts according to claim 1, characterized in that, The T-shaped shaft (7) has a chamfer on the side near the guide frame (8) and a rounded corner on the side near the door (3).

5. The continuous heat treatment apparatus for precision rolled nuts according to claim 4, characterized in that, A ball bearing (13) is rotatably mounted on the T-shaped shaft (7).

6. The continuous heat treatment apparatus for precision rolled nuts according to claim 1, characterized in that, The number of chain drive assemblies (5) is two, and the two chain drive assemblies (5) are located at both ends of the conveyor shaft (4). The T-shaped shafts (7) on the two chain drive assemblies (5) are symmetrically arranged.

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