Hot bending heating device for sprayed workpiece
By designing the cavity structure separated by the moving push plate and the gas flow controlled by the solenoid valve in the heating device for spraying the workpiece, the problem of oxidation and degeneration of the parts at high temperatures is solved, and the service life of the heating device is extended and the production cost is reduced.
Patent Information
- Application Number
- CN202420566774.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-22
AI Technical Summary
In the existing heating devices for spraying workpieces, parts are prone to oxidation and denaturation at high temperatures, resulting in a shorter service life and an increase in production costs.
A heating device for a heat bending machine is designed, and the internal space of the heating box is divided into a first cavity and a second cavity through a moving push plate. The gas flow is controlled by a solenoid valve to ensure that the heating box is in an oxygen-free state, thereby avoiding the reaction of oxygen with high-temperature components.
It effectively avoids the reaction between oxygen and high-temperature components, extends the service life of the heating device, reduces production costs, and further reduces processing costs through the recycling of inert gas.
Smart Images
Figure CN222551915U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of spraying processing, and in particular to a hot bending heating device for spraying workpieces. Background Art
[0002] In the related art, during the production process of some sprayed workpieces, the sprayed workpieces need to be shaped, and the most critical step is to heat the workpiece before plasticization so that the workpiece can be shaped when it is below the melting point. However, due to the presence of easily oxidized parts in the heating device of the related art, some parts are easily oxidized and denatured at high temperatures, which shortens the service life of the heating device and increases production costs. Utility Model Content
[0003] The purpose of this application is to overcome the shortcomings of the prior art and provide a hot bending heating device for spraying workpieces, which can avoid the reaction of oxygen with high-temperature parts and produce degeneration, extend the service life of the heating device and reduce production costs.
[0004] This application is solved by the following technical solutions:
[0005] The present application provides a heating device for a hot bending machine, comprising:
[0006] A heating box, wherein at least one side of the interior of the heating box is provided with a heating element, the heating element is electrically connected to a controller, and a push plate is provided in the heating box that is movable and movably sealed to the inner wall of the heating box, and the push plate divides the internal space of the heating box into a first cavity and a second cavity;
[0007] Wherein, one side of the heating box is provided with a first pushing device for pushing a carrier with a workpiece into the heating box, and a second pushing device for pushing the carrier into the range where the heating element is located, and the second pushing device is transmission-connected to the push plate;
[0008] A first movable door is provided at the connection between the first pushing device and the heating box, a second movable door is provided in the middle of the pushing plate for sealing with the outside of the range of the heating element, the first cavity is provided with a first exhaust hole and a first air inlet hole, the second cavity is provided with a second exhaust hole, the first exhaust hole is provided on the pushing plate and connects the first cavity and the second cavity. Further, the first pushing device includes a conveying surface connected to the inside and outside of the heating box, the second pushing device includes a push rod connected to the pushing plate, and the push rod is connected to a push block for pushing the bearing element into the range where the heating element is located.
[0009] Furthermore, the first air inlet, the first air outlet, and the second air outlet are provided with solenoid valves, and the solenoid valves are electrically connected to the controller.
[0010] Furthermore, a slide rail is provided at the connection between the push plate and the inner wall of the heating box, and the push plate moves along the slide rail.
[0011] Furthermore, the first movable door and the second movable door are provided with electric plug boards, and the electric plug boards are electrically connected to the controller.
[0012] Furthermore, the second exhaust hole is also connected to the first air inlet hole via an air extraction device.
[0013] Furthermore, the carrier is a graphite mold, and the workpiece is a glass workpiece.
[0014] Furthermore, the heating temperature of the heating wire is 700-750°C.
[0015] Furthermore, the heating element is a heating coil arranged on at least one side wall of the heating box.
[0016] Furthermore, it also includes a gas inlet connected to the first cavity and / or the second cavity, and the gas inlet is used to introduce an inert gas into the first cavity and / or the second cavity.
[0017] Compared with the prior art, this application has the following advantages and beneficial effects:
[0018] 1. In the solution provided by the present application, the internal space of the heating box is divided into a first cavity and a second cavity by a moving push plate. When the push plate moves, the volumes of the first cavity and the second cavity change accordingly, and the air in the first cavity is discharged through the second exhaust hole provided at the upper part of the second cavity, so that the heating box is in an oxygen-free state, and then the heating element is used to heat the carrier, so as to avoid the reaction between oxygen and the high-temperature carrier to produce denaturation, thereby achieving the effect of longer service life and reducing production costs.
[0019] 2. The solution provided in the present application also includes a gas inlet connected to the first cavity and / or the second cavity, and the gas inlet is used to introduce inert gas into the first cavity and / or the second cavity. When the carrier is pushed into the part by the second pushing device, the push plate compresses the inert gas in the first cavity and discharges the inert gas with higher density into the first cavity, thereby further reducing the oxygen content in the heating box.
[0020] 3. In the solution provided in the present application, when the push plate moves forward, the volume of the first cavity decreases, and the inert gas in the first cavity is discharged from the second cavity to exhaust the air. When the push plate moves backward, the inert gas in the second cavity is re-discharged into the first cavity. The inert gas is circulated in the first cavity and the second cavity, thereby reducing the supply of external inert gas and lowering the processing cost.
[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.
[0023] Figure 1 A schematic structural diagram of a hot bending heating device for a sprayed workpiece is shown in an embodiment of the present application. DETAILED DESCRIPTION
[0024] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0025] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0026] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0027] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0028] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] In the related art, during the production process of some sprayed workpieces, it is necessary to shape the sprayed workpieces, and the most critical step is to heat the workpiece before plasticization so that the workpiece can be shaped when it is below the melting point. However, due to the presence of easily oxidized parts in the heating device of the related art, some parts are easily oxidized and denatured under high temperature conditions, which shortens the service life of the heating device and increases production costs. In response to the above problems, an embodiment of the present application provides a hot bending heating device for sprayed workpieces, which can prevent oxygen from reacting with high-temperature parts to cause denaturation, extend the service life of the heating device, and reduce production costs.
[0030] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.
[0031] Figure 1 A schematic structural diagram of a hot bending heating device for a sprayed workpiece is shown in an embodiment of the present application.
[0032] like Figure 1As shown, the hot bending heating device provided by the present application includes a heating box 1, at least one side of the interior of the heating box 1 is provided with a heating element 5, the heating element 5 is electrically connected to the controller, the heating box 1 is provided with a push plate 4 that can move and is movably and sealedly connected to the inner wall of the heating box, the push plate 4 divides the internal space of the heating box 1 into a first cavity 2 and a second cavity 3; one side of the heating box 1 is provided with a first pushing device 6 for pushing a carrier with a workpiece into the heating box 1 and a second pushing device 13 for pushing the carrier into the heating element 5, the second pushing device is connected to the push plate 4, a first movable door 8 is provided at the connection between the first pushing device 6 and the heating box 1, a second movable door 9 for sealingly cooperating with the outer side of the heating element 5 is provided in the middle of the push plate 4, the first cavity 2 is provided with a first exhaust hole 11 and a first air inlet hole 10, the second cavity 3 is provided with a second exhaust hole 12, the first exhaust hole 11 is provided on the push plate 4 and connects the first cavity 2 and the second cavity 3.
[0033] The solution provided by the present application is that the internal space of the heating box is divided into a first cavity and a second cavity by a moving push plate. When the push plate moves, the volumes of the first cavity and the second cavity change accordingly, and the air in the first cavity is discharged through the second exhaust hole provided at the upper part of the second cavity, so that the heating box is in an oxygen-free state, and then the heating element is used to heat the carrier, so as to avoid the reaction between oxygen and the high-temperature carrier to produce denaturation, thereby achieving the effect of longer service life and reducing production costs.
[0034] The controller may be a PLC controller, and the controller can control the working states of the first movable door, the second movable door and the solenoid valve.
[0035] The first pushing device 6 includes a conveying surface connected to the inside and outside of the heating box 1, and the second pushing device includes a push rod 7 connected to the push plate, and a push block 13 for pushing the carrier into the heating element 5 is connected to the push rod 7. The push rod 7 is sealed and penetrated on the box wall of the heating box. The push rod 7 is driven by a cylinder. The first pushing device penetrates the heating box 1 to form a feed inlet and a discharge port. A guide rail (not shown) is provided between the block 13 and the heating element. When the carrier is pushed to the front of the block 13 by the first pushing device, the block 13 pushes the carrier to move along the guide rail toward the heating element 5.
[0036] The first air inlet 10 , the first air outlet 11 , and the second air outlet 12 are provided with solenoid valves, and the solenoid valves are electrically connected to the controller.
[0037] A slide rail (not shown) is provided at the connection between the push plate 4 and the inner wall of the heating box body 1 , and the push plate 4 moves along the slide rail.
[0038] The first movable door 8 and the second movable door 9 are provided with electric plug plates, which are electrically connected to the controller. The feed port and the discharge port are both provided with first movable doors, and the electric plug plates can seal and close the first movable doors.
[0039] The second exhaust hole 12 is also connected to the first air inlet 10 via an exhaust device. The exhaust device in this embodiment extracts gas through negative pressure. The specific device can be a common exhaust device in the art.
[0040] The workpiece is a glass workpiece. When the glass is placed in a graphite mold for hot bending, the temperature in the furnace needs to be maintained at 700-750°C, and the heating temperature of the heating element is 700-750°C. This temperature range helps the glass to soften and form in the mold. At the same time, it is also necessary to control the heating speed and cooling speed to avoid thermal stress or cracking of the glass.
[0041] In some embodiments, the heating element 5 is a heating coil arranged on at least one side wall of the heating box.
[0042] In some embodiments, the carrier is a graphite mold. The graphite material will undergo an oxidation reaction in an environment of high temperature, high humidity or high oxygen partial pressure, causing the graphite mold to be easily denatured, thereby affecting the hot bending accuracy of the workpiece. In this embodiment, a gas inlet connected to the first cavity and / or the second cavity is also included, and the gas inlet is used to introduce an inert gas into the first cavity and / or the second cavity. When the carrier is pushed into the workpiece by the second pushing device, the push plate compresses the inert gas in the first cavity and discharges the inert gas with a higher density into the first cavity, further reducing the oxygen content in the heating box and preventing oxidation of the graphite mold.
[0043] In addition, when the push plate moves forward, the volume of the first cavity decreases, and the inert gas in the first cavity is discharged from the second cavity to exhaust the air. When the push plate moves backward, the inert gas in the second cavity is re-discharged into the first cavity. The inert gas is recycled in the first cavity and the second cavity, reducing the supply of external inert gas and reducing processing costs.
[0044] The working principle and process of the present application are as follows: when starting work, the second movable door 9 is in a closed state, pressurized inert gas is introduced into the first cavity 2, the first pushing device 6 pushes the carrier through the first movable door 8 on the feed port to the relative position of the second movable door 9, and then the first movable door 8 is closed, and the second cavity 3 is in a closed state. Then the second pushing device is started, and the second pushing device pushes the push plate 4 forward together with the carrier, and stops when the carrier is pushed into the heating element 5. During the movement of the push plate 4, the first exhaust hole 11 is connected, and the inert gas flows to the second cavity 3 through the first exhaust hole 11 under the pressure of the push plate 4, because the density of the inert gas used in this embodiment is greater than the density of air.
[0045] Therefore, when the inert gas flows toward the second cavity 3, the air in the second cavity 3 is discharged from the second exhaust hole 12 located at the upper portion of the heating box 1; when the carrier is completely pushed into the heating element, the inert gas in the first cavity 2 is completely discharged into the second cavity 3; at this time, the first exhaust hole 11 and the second exhaust hole 12 are closed, and the carrier is started to be heated; since the entire heating process is in an oxygen-free environment, the carrier is not easily oxidized, thereby effectively increasing the service life of the carrier.
[0046] When heating is completed, the first exhaust hole 11 is opened and the push plate 4 moves backward. At this time, the inert gas in the second cavity 3 is reintroduced into the first cavity 2. When the carrier is returned to the conveying surface of the first pushing device 6, the first exhaust hole 11 is closed and the second exhaust hole 12 is opened. The remaining inert gas in the second cavity is pumped into the first cavity 2 through an external exhaust device (not shown), and then the first movable door located at the discharge port 13 is opened, and the carrier is moved out of the heating box. With such a design, the inert gas can be recycled and will not be wasted, which is beneficial to reducing processing costs.
[0047] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A hot bending heating device for spraying workpieces, characterized in that: include: A heating box, wherein at least one side of the interior of the heating box is provided with a heating element, the heating element is electrically connected to a controller, a push plate is provided in the heating box that is movable and movably sealed to the inner wall of the heating box, and the push plate divides the interior space of the heating box into a first cavity and a second cavity; Wherein, one side of the heating box is provided with a first pushing device for pushing a carrier with a workpiece into the heating box, and a second pushing device for pushing the carrier into the heating element, and the second pushing device is transmission-connected to the push plate; A first movable door is provided at the connection between the first pushing device and the heating box, a second movable door for sealingly cooperating with the outer side of the heating element is provided in the middle of the push plate, the first cavity is provided with a first exhaust hole and a first air inlet hole, the second cavity is provided with a second exhaust hole, the first exhaust hole is provided on the push plate and connects the first cavity and the second cavity.
2. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The first pushing device includes a conveying surface connected to the inside and outside of the heating box, and the second pushing device includes a push rod connected to the push plate, and the push rod is connected to a push block for pushing the carrier into the range where the heating element is located.
3. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The first air inlet, the first air outlet and the second air outlet are provided with electromagnetic valves, and the electromagnetic valves are electrically connected to the controller.
4. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: A slide rail is provided at the connection between the push plate and the inner wall of the heating box body, and the push plate moves along the slide rail.
5. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The first movable door and the second movable door are provided with electric plug boards, and the electric plug boards are electrically connected to the controller.
6. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The second exhaust hole is also connected to the first air inlet hole through an air extraction device.
7. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The carrier is a graphite mold, and the workpiece is a glass workpiece.
8. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The heating temperature of the heating element is 700-750°C.
9. The hot bending heating device for spraying workpiece according to claim 1, characterized in that: The heating element is a heating coil arranged on at least one side wall of the heating box.
10. A hot bending heating device for a sprayed workpiece according to any one of claims 1 to 9, characterized in that: It also includes a gas inlet connected to the first cavity and / or the second cavity, and the gas inlet is used to introduce an inert gas into the first cavity and / or the second cavity.