Material pulling homocentric-square-shaped oven with uniform temperature

Abstract

A material pulling homocentric-square-shaped oven uniform in temperature comprises a homocentric-square-shaped oven body, at least four hot air devices, a plurality of conveying guide rods, a material collecting shaft and a motor, a material collecting area is arranged in the middle of the oven body, and the oven body is divided into four baking areas with the connecting lines of the four corners of the oven body as boundaries; a row of transmission guide rods arranged parallel to a corner connecting line are arranged in each corner of the box body, the material receiving shaft is located in a material receiving area, and the motor is connected with the material receiving shaft; at least one hot air device is arranged on the side wall of each baking area, and hot air output by all the hot air devices forms closed-loop airflow in the oven body. Due to the fact that at least one hot air device is arranged in each baking area of the material-pulling concentric-square-shaped oven, roll materials in each baking area can be baked, baking efficiency is improved, and meanwhile the possibility that the product performance is affected due to the fact that heating is too concentrated is reduced.

Description

Technical Field

[0001] The utility model relates to an oven, in particular to a material-pulling return oven with uniform temperature. Background Art

[0002] The material-pulling oven is a tool used to heat various coils. During use, the coil enters the oven and is transported in a square spiral shape, where it is toasted during transport and then reeled up after heating. (See Chinese invention application CN109823042A for an oven device, screen printing equipment, and printing method therefor.)

[0003] However, the heating area of ​​existing pull-type ovens is relatively concentrated, resulting in uneven heating of the product. On the one hand, this is not conducive to improving baking efficiency. On the other hand, for coils with electronic components, such as temperature-sensitive PTC inks, excessive heat concentration can easily affect the performance of the electronic components. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to design a temperature-uniform pull-type oven, which can ensure uniform temperature inside the oven, improve baking efficiency, and reduce the possibility of affecting product performance due to over-concentrated heating.

[0005] To achieve the above-mentioned objectives, the utility model provides a material-pulling circular oven with uniform temperature, comprising: a circular box body, at least four hot air devices, multiple transmission guide rods, a material receiving shaft and a motor. A material receiving area is provided in the middle of the box body, and the box body is divided into four baking areas with the four corner connecting lines of the box body as boundaries. A row of transmission guide rods arranged parallel to the corner connecting lines is provided in each corner of the box body, the material receiving shaft is located in the material receiving area, and the motor is connected to the material receiving shaft; at least one hot air device is provided on the side wall of each baking area, and the hot air output by all hot air devices forms a closed-loop airflow inside the box body.

[0006] Furthermore, each baking area is provided with a temperature sensor, wherein the temperature sensor can be used to monitor whether the temperature of each baking area is too high or too low, and also to monitor whether the temperature between the baking areas is uniform.

[0007] Furthermore, the outer wall of the box is provided with a feed port, and the inner wall of the box is provided with a discharge port, the feed port is arranged toward a corner of the box, and the discharge port is located at a corner of the receiving area. Positioning the feed port toward a corner of the box allows the coil to be guided by the transfer guide rod as soon as it is fed into the box.

[0008] Furthermore, the pull-type oven further comprises: a plurality of receiving guide rods, at least one of which is provided at a corner of the receiving area. The receiving guide rods are provided at the corners of the receiving area, and the discharge port is located at the corners of the receiving area, so that the coiled material is guided by the receiving guide rods as soon as it is discharged from the box.

[0009] Furthermore, the feed port and the discharge port are both provided with tension sensors, wherein the tension sensors can monitor the tension value of the coiled material and determine whether there are problems such as deformation, over-stretching or wrinkling.

[0010] Furthermore, the side wall of the box is provided with a mesh plate corresponding to the position where the hot air device outputs hot air. The mesh plate can increase wind resistance and prevent the box from overheating due to excessive wind speed.

[0011] Furthermore, at least two hot air devices are disposed on the front wall of the box and spaced apart vertically, at least two hot air devices are both disposed on the outer surface of the front wall of the box and spaced apart vertically, and at least two hot air devices are both disposed on the outer surface of the rear wall of the box and spaced apart horizontally. The above arrangement of the four hot air devices can fully utilize the external space of the box while improving heating uniformity at both the front and rear ends.

[0012] Furthermore, the hot air device includes a fan and a heater, wherein the fan is connected to the air inlet of the heater, and the air outlet of the heater is connected to the box, wherein the airflow output by the fan can bring the heat generated by the heater into the box.

[0013] Furthermore, the pull-type oven also includes an ultrasonic sensor located in the material receiving area and facing the material receiving shaft; and a constant-torque motor. Because the motor is a constant-torque motor, it can reduce the motor's linear speed based on the coil thickness detected by the ultrasonic sensor, ensuring a constant motor torque and thus a constant coil linear speed, thereby achieving a stable material receiving operation.

[0014] After adopting the above technical solution, the beneficial effect is: since the pull-material circular oven of the utility model is provided with at least one hot air device in each baking area, the coils in each baking area can obtain the baking effect, thereby improving the baking efficiency and reducing the possibility of affecting product performance due to over-concentrated heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the material pulling and returning oven involved in the utility model;

[0016] Figure 2 This is another schematic diagram of the material pulling and returning oven involved in the present utility model;

[0017] Figure 3 It is a vertical cross-sectional view of the material pulling and returning oven involved in the utility model.

[0018] The accompanying drawings are marked as follows: 100, coil; 1, box body; 11, feed port; 12, discharge port; 13, mesh plate; 2, hot air device; 21, fan; 22, heater; 3, transmission guide rod; 4, receiving shaft; 5, motor; 6, receiving guide rod; 7, ultrasonic sensor. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below by way of embodiments:

[0020] The utility model provides a material pulling and returning oven with uniform temperature, Figures 1 to 3 As shown, the material pulling circular oven includes: a circular box 1, at least four hot air devices 2, multiple transmission guide rods 3, a material receiving shaft 4 and a motor 5. A material receiving area is provided in the middle of the box 1, and the box 1 is divided into four baking areas by the four corner connection lines L of the box 1. The side walls of each baking area are provided with at least one hot air device 2. Each corner of the box 1 is provided with a row of transmission guide rods 3 arranged parallel to the corner connection lines L. The material receiving shaft 4 is located in the material receiving area. The motor 5 is connected to the material receiving shaft 4 through a reducer. The hot air output by all the hot air devices 2 forms a closed-loop airflow inside the box 1. During operation, the coil 100 is input into the interior of the box 1, and is guided by multiple transmission guide rods 3 to form a spiral shape that is approximately square. The four baking areas use the hot air devices 2 to bake the coil 100 at the same time. Finally, the coil 100 is output to the material receiving shaft 4 of the material receiving area, and the motor 5 drives the material receiving shaft 4 to rotate to complete the winding operation. Among them, the four walls on the outside of the box body 1 are outer walls, the four walls on the inside of the box body 1 are inner walls, and the two walls on the front and back sides of the box body 1 are side walls; the four baking areas are the upper, lower, left and right baking areas respectively; the hot air output by all hot air devices 2 forms a U-shaped internal circulation inside the box body 1, that is, there is no hot air device 2 that outputs hot air in the reverse direction.

[0021] As a preferred solution, each baking area is provided with a temperature sensor (not shown). During operation, the temperature of each baking area is monitored by the temperature sensor.

[0022] For details, please continue to refer to Figure 3 As shown, the outer wall of the box body 1 is provided with a feed port 11, and the inner wall of the box body 1 is provided with a discharge port 12. The feed port 11 is arranged toward the corner of the box body 1, and the discharge port 12 is located at the corner of the receiving area. During operation, the coil 100 is input into the interior of the box body 1 through the feed port 11 and output to the receiving area through the discharge port 12.

[0023] As a preferred solution, both the feed port 11 and the discharge port 12 are equipped with tension sensors (not shown in the figure). When in operation, the two tension sensors cooperate to detect the tension value applied to the coil 100 inside the box 1 to determine whether the tension of the coil 100 is too large or too small.

[0024] As a preferred solution, the material pulling and returning oven further comprises: a plurality of material receiving guide rods 6, and at least one material receiving guide rod 6 is provided at a corner of the material receiving area. During operation, the coil 100 first passes through the material receiving guide rod 6 and is then guided to the material receiving shaft 4.

[0025] As a preferred solution, the side wall of the box body 1 is provided with a mesh plate 13 corresponding to the position where the hot air device 2 outputs hot air. When working, the hot air output by the hot air device 2 is transferred to the interior of the box body 1 through the mesh holes of the mesh plate 13.

[0026] As a preferred solution, please continue to refer to Figures 1-2 As shown, at least two hot air devices 2 are provided on the outer surface of the front wall of the box body 1 and are spaced apart in an upper and lower manner, and at least two hot air devices 2 are provided on the outer surface of the rear wall of the box body 1 and are spaced apart in a left and right manner. During operation, the two hot air devices 2 provided on the front wall heat the upper and lower baking areas respectively, and the two hot air devices 2 provided on the rear wall heat the left and right baking areas respectively.

[0027] Specifically, the hot air device 2 includes a fan 21 and a heater 22. The fan 21 is connected to the air inlet of the heater 22, and the air outlet of the heater 22 is connected to the housing 1. During operation, the fan 21 generates airflow, which enters the heater 22 from the air inlet and transfers the heat generated by the heater 22 to the interior of the housing 1 through the air outlet. The blowing directions of all fans 21 form a closed loop.

[0028] As a preferred solution, the roll-type oven further includes an ultrasonic sensor 7 located in the receiving area and facing the receiving shaft 4; and a constant-torque motor 5. During operation, the ultrasonic sensor 7 is used to detect the total thickness of the roll on the receiving shaft 4.

Claims

1. A temperature-uniform pull-type oven, comprising: A U-shaped box, at least four hot air devices, multiple transmission guide rods, a receiving shaft and a motor, a receiving area is provided in the middle of the box, and the box is divided into four baking areas with the four corner connecting lines of the box as boundaries, each corner of the box is provided with a row of transmission guide rods arranged parallel to the corner connecting lines, the receiving shaft is located in the receiving area, and the motor is connected to the receiving shaft; it is characterized in that: at least one hot air device is provided on the side wall of each baking area, and the hot air output by all hot air devices forms a closed-loop airflow inside the box.

2. The temperature-uniform material pulling and returning oven according to claim 1, characterized in that: Each baking area is equipped with a temperature sensor.

3. The temperature-uniform material pulling and returning oven according to claim 1, characterized in that: The outer wall of the box body is provided with a feed port, and the inner wall of the box body is provided with a discharge port. The feed port is arranged toward the corner of the box body, and the discharge port is located at the corner of the material receiving area.

4. The temperature-uniform material pulling and returning oven according to claim 3, characterized in that: The material pulling and returning oven further comprises: a plurality of material collecting guide rods, and at least one material collecting guide rod is provided at a corner of the material collecting area.

5. The temperature-uniform material pulling and returning oven according to claim 3, characterized in that: The feed port and the discharge port are both provided with tension sensors.

6. The temperature-uniform material pulling and returning oven according to claim 1, characterized in that: The side wall of the box body is provided with a mesh plate corresponding to the position where the hot air device outputs hot air.

7. The temperature-uniform material pulling and returning oven according to claim 1 or 6, characterized in that: At least two hot air devices are arranged on the outer surface of the front wall of the box body and are spaced apart from each other, and at least two hot air devices are arranged on the outer surface of the rear wall of the box body and are spaced apart from each other.

8. The temperature-uniform material pulling and returning oven according to claim 1, characterized in that: The hot air device includes a fan and a heater. The fan is connected to the air inlet of the heater, and the air outlet of the heater is connected to the box.

9. The temperature-uniform material pulling and returning oven according to claim 1, characterized in that: The material pulling and returning oven further comprises: an ultrasonic sensor, which is located in the material receiving area and arranged toward the material receiving shaft; and the motor is a constant torque motor.

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