A coating oven with baking timing function
By installing a timer and buzzer in the oven and a limit switch at the door, the problem of inaccurate baking time control was solved, enabling automatic reminders and simplified operation, thus improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YANXIN AUTO SEATING PARTS
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-29
Smart Images
Figure CN224293801U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive interior processing equipment, and in particular to a coating oven with a baking timer function. Background Technology
[0002] In fields such as automotive interior processing, coating ovens are key equipment for achieving material surface coating processes. Their core function is to activate and cure the adhesive between the coating material and the substrate through heating, thereby forming a stable bond. However, existing coating ovens generally suffer from a significant drawback: the lack of precise baking timers and indicator functions, making it difficult for users to accurately control baking time and consequently affecting product quality.
[0003] Specifically, insufficient baking time prevents the adhesive from being fully activated, leading to weak adhesion between the coating material and the substrate, resulting in edge lifting, localized detachment, and other problems that severely affect the coating effect. Conversely, excessive baking time, with its continuous high temperature, can cause aging, deformation, and even irreversible physicochemical changes in the coating material or substrate, rendering the product unusable. Currently, most production scenarios rely on operators manually timing or judging baking time based on experience. This method is highly susceptible to human error, has low time control accuracy, and lacks automatic reminders upon completion of baking, making it prone to timing errors due to negligence. Furthermore, while some ovens are equipped with basic timing devices, they lack a reset function linked to the door opening and closing. When operators open the door to check or adjust the workpiece during baking, the timer cannot automatically reset and must be manually reset, which is cumbersome and prone to oversight, further exacerbating the instability of baking time control.
[0004] To address the aforementioned issues, there is an urgent need for a wrapping oven that can achieve precise control of baking time, automatic reminders, and intelligent reset, in order to solve the wrapping quality defects caused by inaccurate timing in existing technologies, improve production efficiency, and reduce labor costs. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art, which results in poor consistency of products baked in a covered oven, and to provide a covered oven with a baking timer function.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] A wrapping oven with a baking timer function includes an oven body and a heating structure. The heating structure is installed on the oven body and is used to heat the oven body. A timer and a buzzer are provided on the side of the heating structure away from the oven body. The timer and the buzzer are electrically connected to a control circuit for controlling the opening and closing of the buzzer and the heating structure.
[0008] Preferably, the oven body is provided with a limit switch for resetting the timer, and the limit switch is installed on one side of the cabinet door of the oven body.
[0009] Preferably, the limit switch is provided with a rotating roller, and the limit switch is located on the side where the cabinet door and the oven body are rotatably connected, with the rotating roller abutting against the cabinet door.
[0010] Preferably, the control circuit includes a timing circuit and an alarm circuit connected in parallel. The timing circuit includes the coil of a time delay relay KT connected in series. The alarm circuit includes a buzzer and the main contact of the time delay relay KT connected in series. The main contact of the time delay relay KT is a normally open contact.
[0011] Preferably, the control circuit further includes a protection circuit, which includes a power-off contact of a time-delay relay KT connected in series with the heating structure, and the power-off contact of the time-delay relay KT is a normally closed contact.
[0012] Preferably, the cabinet door is rotatably fixed to the oven body via a hinge, and the limit switch is located on the side of the cabinet door near the hinge.
[0013] Preferably, the cabinet door is provided with a transparent window, which is double-layered heat-insulating glass.
[0014] Preferably, the heating structure is equipped with a display screen and adjustment buttons.
[0015] Preferably, the oven body is provided with a ventilation opening, which is located at the top of the oven body.
[0016] Preferably, the oven body is provided with multiple shock-absorbing feet, and each shock-absorbing foot is evenly distributed at the bottom of the oven body.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] (1) This solution sets a timer and a buzzer on the side of the heating structure away from the oven body and configures a control circuit so that when using the oven, the user can set the baking time through the timer. When the preset time is reached, the control circuit controls the buzzer to issue an alarm signal to remind the user that baking is complete, thus avoiding the product quality being affected by over-baking and improving the controllability and convenience of the baking process.
[0019] (2) The limit switch of this solution is installed on one side of the cabinet door. When the cabinet door is opened, the limit switch is triggered, thereby resetting the timer. This allows the timer to start counting again when the user closes the cabinet door again after opening it for inspection or operation in the middle of the process, without the need for manual reset. This simplifies the operation process and improves the convenience of use. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the covering oven provided by this utility model;
[0021] Figure 2 Electrical schematic diagram of the control circuit provided by this utility model;
[0022] In the diagram: 1. Oven body, 2. Heating mechanism, 3. Timer, 4. Buzzer, 5. Limit switch, 11. Cabinet door, 12. Ventilation opening. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] It should be noted that 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0028] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.
[0029] Example 1
[0030] like Figure 1 As shown, this embodiment provides a wrapping oven with a baking timer function, including an oven body 1 and a heating structure 2. The heating structure 2 is installed on the oven body 1 and is used to heat the oven body 1. The characteristic is that a timer 3 and a buzzer 4 are provided on the side of the heating structure 2 away from the oven body 1. The timer 3 and the buzzer 4 are both electrically connected to a control circuit for controlling the opening and closing of the buzzer 4 and the heating structure 2.
[0031] By installing a timer and a buzzer on the side of the heating structure away from the oven body, and configuring a control circuit, users can set the baking time using the timer. When the preset time is reached, the control circuit controls the buzzer to issue an alarm signal to remind the user that baking is complete, thus avoiding over-baking and affecting product quality, and improving the controllability and convenience of the baking process.
[0032] In this embodiment, the oven body 1 is provided with a limit switch 5 for resetting the timer 3. The limit switch 5 is installed on one side of the cabinet door 11 of the oven body 1. The limit switch 5 is provided with a rotating roller. The limit switch 5 is located on the side where the cabinet door 11 is rotatably connected to the oven body 1, and the rotating roller abuts against the cabinet door 11.
[0033] The limit switch is installed on one side of the cabinet door. When the cabinet door is opened, the limit switch is triggered, resetting the timer. This allows the timer to restart when the user closes the cabinet door again after opening it for inspection or operation, eliminating the need for manual reset. This simplifies the operation process and improves ease of use. The limit switch has a rotating roller that abuts against the cabinet door. When the cabinet door rotates, the roller rolls, reducing friction between the limit switch and the door, minimizing wear and tear on the components, extending the limit switch's lifespan, and improving the device's reliability.
[0034] In this embodiment, as Figure 2 As shown, the control circuit includes a timing circuit and an alarm circuit connected in parallel. The timing circuit includes the coil of a time delay relay KT connected in series. The alarm circuit includes a buzzer 4 connected in series and the main contact of the time delay relay KT. The main contact of the time delay relay KT is a normally open contact.
[0035] Furthermore, the control circuit also includes a protection circuit, which includes a power-off contact of a time-delay relay KT connected in series with the heating structure 2. The power-off contact of the time-delay relay KT is a normally closed contact.
[0036] Specifically, the cabinet door 11 is rotatably fixed to the oven body 1 via a hinge, and the limit switch 5 is located on the side of the cabinet door 11 near the hinge. The cabinet door 11 has a transparent window, which is double-layered heat-insulating glass. The heating structure 2 has a display screen and adjustment buttons. The oven body 1 has a ventilation opening 12 located at the top of the oven body 1. The oven body 1 has multiple shock-absorbing legs, which are evenly distributed at the bottom of the oven body 1.
[0037] The control circuit adopts a parallel timing circuit and an alarm circuit. The coil of the time delay relay KT in the timing circuit is connected in series with the timing control switch of the timer, and the buzzer in the alarm circuit is connected in series with the contacts of the time delay relay KT. This circuit design ensures that after the timer finishes timing, the contacts of the time delay relay KT close, and the buzzer is energized to sound, realizing the linkage between timing and alarm functions. The structure is simple, the control is accurate, and the reliability of the alarm function is ensured.
[0038] Specifically, in this embodiment, the covered oven includes an oven body and a heating structure. The oven body is a rectangular box with a baking cavity inside. The cabinet door is installed on one side of the oven body via a hinge and can be opened and closed by rotating around the hinge. A transparent window is embedded in the cabinet door, allowing the user to easily observe the situation inside the baking cavity. The heating structure is installed on the outer wall of the oven body, specifically on the top or side of the oven body. The heating structure includes a heating element and a heat dissipation device for heating the oven body. On the side of the heating structure away from the oven body, i.e., on the outer wall, a timer and a buzzer are installed. The timer is an electronic timer with time setting and display functions, and the buzzer is used to emit an alarm sound. On the oven body, at the position corresponding to the rotating shaft connecting the cabinet door and the oven body via the hinge, a limit switch is installed. A rotating roller is provided on the side of the limit switch facing the cabinet door, and the rotating roller contacts the side of the cabinet door. The control circuit is located inside or outside the control box of the oven body, and is electrically connected to the timer, buzzer, limit switch and power module. The power module can be 220V AC or battery to power each electrical component.
[0039] The control circuit includes a timing circuit and an alarm circuit connected in parallel. In the timing circuit, the coil of the time delay relay KT is connected in series with the timing control switch of the timer. When the timer is set and started, the timing control switch closes, energizing the coil of the time delay relay KT and starting the timing. In the alarm circuit, a buzzer is connected in series with the contacts of the time delay relay KT. When the timing is complete, the contacts of the time delay relay KT close, energizing the buzzer to emit an alarm sound and cutting off the power to the heating structure to prevent further heating.
[0040] The specific workflow is as follows: The user opens the cabinet door, places the items to be baked into the baking cavity of the oven body, and closes the cabinet door. During the closing process, the side of the cabinet door presses against the rotating roller, causing the roller to roll and triggering the limit switch. The limit switch sends a reset signal to the control circuit, and the timer is reset to its initial state.
[0041] The user sets the desired baking time using a timer, starts the timer, closes the timer control switch, energizes the coil of the time delay relay KT, and begins timing. Simultaneously, the heating mechanism activates, heating the oven body.
[0042] Once the preset baking time is reached, the contacts of the time delay relay KT close, the alarm circuit is activated, and the buzzer sounds an alarm signal to remind the user that baking is complete. Then, the power-off contacts of the time delay relay KT open, and the heating structure is de-energized.
[0043] After hearing the alarm, the user opens the cabinet door and takes out the items. As the cabinet door opens, the roller rotates and rolls with the door, triggering the limit switch again and resetting the timer for the next use.
[0044] Through the above structure and workflow, this utility model realizes the timing and alarm functions of the baking process, which is convenient to operate, highly reliable, and improves the efficiency and baking quality of the wrapping oven.
[0045] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A wrapping oven with a baking timer function, comprising an oven body (1) and a heating structure (2), wherein the heating structure (2) is mounted on the oven body (1) and is used to heat the interior of the oven body (1), characterized in that, The heating structure (2) is provided with a timer (3) and a buzzer (4) on the side away from the oven body (1). The timer (3) and the buzzer (4) are both electrically connected to a control circuit for controlling the opening and closing of the buzzer (4) and the heating structure (2).
2. A wrapping oven with a baking timer function according to claim 1, characterized in that, The oven body (1) is provided with a limit switch (5) for resetting the timer (3), and the limit switch (5) is installed on the side of the cabinet door (11) of the oven body (1).
3. A wrapping oven with a baking timer function according to claim 2, characterized in that, The limit switch (5) is equipped with a rotating roller. The limit switch (5) is located on the side where the cabinet door (11) and the oven body (1) can be rotatably connected. The rotating roller abuts against the cabinet door (11).
4. A wrapping oven with a baking timer function according to claim 3, characterized in that, The control circuit includes a timing circuit and an alarm circuit connected in parallel. The timing circuit includes the coil of a time delay relay KT connected in series. The alarm circuit includes a buzzer (4) connected in series and the main contact of the time delay relay KT. The main contact of the time delay relay KT is a normally open contact.
5. A wrapping oven with a baking timer function according to claim 4, characterized in that, The control circuit also includes a protection circuit, which includes a power-off contact of a time-delay relay KT connected in series with the heating structure (2). The power-off contact of the time-delay relay KT is a normally closed contact.
6. A wrapping oven with a baking timer function according to claim 2, characterized in that, The cabinet door (11) is rotatably fixed to the oven body (1) via a hinge, and the limit switch (5) is located on the side of the cabinet door (11) near the hinge.
7. A wrapping oven with a baking timer function according to claim 2, characterized in that, The cabinet door (11) is provided with a transparent window, which is double-layered heat-insulating glass.
8. A wrapping oven with a baking timer function according to claim 1, characterized in that, The heating structure (2) is equipped with a display screen and adjustment buttons.
9. A wrapping oven with a baking timer function according to claim 1, characterized in that, The oven body (1) is provided with a vent (12), which is located on the top of the oven body (1).
10. A wrapping oven with a baking timer function according to claim 1, characterized in that, The oven body (1) is provided with multiple shock-absorbing feet, and each shock-absorbing foot is evenly distributed at the bottom of the oven body (1).