A heating disassembly device for separating a screen from a middle frame

Abstract

The present invention discloses a heating disassembly device for separating a screen from a middle frame, which includes a screen heating component, a screen adsorption device, a middle frame fixing component and a disassembly component. By providing a middle frame fixing component with a middle frame fixing hole, a screw passes through the middle frame fixing hole to fix the middle frame to the middle frame fixing component, so that the outer surface of the middle frame is not stressed during the screen disassembly process, avoiding damage to the outer surface of the middle frame, improving the stability of screen disassembly, and reducing the material waste of the screen and the middle frame during the disassembly process. By providing a disassembly component, by starting the motor, the rotating ball can slide from one end far away from the rotating connection part to the end close to the rotating connection part, driving the ramp block and the middle frame fixing component to slowly rise, separating and disassembling the screen and the middle frame of the mobile phone, realizing the automatic disassembly of the screen and the middle frame, improving the stability of screen disassembly, reducing the workload of manual disassembly, and improving the disassembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of screen disassembly, and in particular to a heating disassembly device for separating a screen from a middle frame. Background Art

[0002] With the development of the economy and the improvement of people's living standards, the usage frequency of smart phones is getting higher and higher. A smart phone refers to a type of mobile phone that, like a personal computer, has an independent operating system and allows users to install software, games and other programs provided by third-party service providers. Through such programs, the functions of the mobile phone can be continuously expanded, and wireless network access can be achieved through a mobile communication network.

[0003] As the frames of smart phones become narrower, the bonding method between the screen and the middle frame has changed from traditional sheet double-sided tape to spot hot melt adhesive (PUR) bonding. The mobile phone industry requires that the bonding force between the screen and the middle frame surface exceeds 120 N. During the repair process of separating the screen from the middle frame, it is difficult to disassemble them. These two materials are valuable, and manual disassembly is difficult, with poor yield stability, and it is very easy to cause damage to the appearance and function of the screen and damage to the appearance of the middle frame. In order to reduce the workload of manual disassembly and reduce the scrapping of the screen and the middle frame during the disassembly process, it is necessary to develop an automatic disassembly auxiliary tooling. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a heating disassembly device for separating a screen from a middle frame.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a heating disassembly device for separating a screen from a middle frame, comprising:

[0006] A screen heating component for heating the screen of the mobile phone;

[0007] A screen adsorption device for adsorbing the screen of the mobile phone;

[0008] A middle frame fixing component for fixing the middle frame of the mobile phone;

[0009] A disassembly component respectively connected to the screen adsorption device and the middle frame fixing component for driving the middle frame fixing component away from the screen adsorption device.

[0010] As a further improvement of the present invention: the middle frame fixing component includes a positioning seat and a middle frame fixing plate. The middle frame fixing plate is fixed on the positioning seat, and the middle frame fixing plate is provided with middle frame fixing holes. During use, screws are passed through the middle frame fixing holes and rotated and fixed with the corresponding screw holes of the mobile phone middle frame, so as to fix the mobile phone middle frame on the middle frame fixing plate.

[0011] As a further improvement of the present invention: The middle frame fixing component includes a positioning seat, an upper cover plate, and a middle frame fixing plate. The upper cover plate is provided with a cavity. The upper cover plate is fixed on the positioning seat, and the middle frame fixing plate is arranged on the upper cover plate.

[0012] As a further improvement of the present invention: The middle frame fixing component includes a positioning seat, an upper cover plate, a height adjustment plate, and a middle frame fixing plate. The upper cover plate is provided with a cavity. The middle frame fixing plate is connected to the upper cover plate through a connecting member. The height adjustment plate is arranged between the middle frame fixing plate and the upper cover plate. The upper cover plate is fixed on the positioning seat.

[0013] As a further improvement of the present invention: The middle frame fixing plate is recessed towards the cavity of the upper cover plate to form a middle frame connecting portion. The middle frame connecting portion is provided with middle frame fixing holes. The middle frame fixing plate further includes a support portion. The support portion is connected to the upper cover plate through a connecting member.

[0014] As a further improvement of the present invention: The middle frame fixing plate and the upper cover plate are fixedly connected by screws.

[0015] As a further improvement of the present invention: The screen adsorption device is a vacuum chuck, and the vacuum chuck is connected to a vacuum pump. Turning on the vacuum pump can make the vacuum chuck firmly suck the screen of the mobile phone. When the middle frame fixing component rises above the horizontal plane of the vacuum chuck during the rising process, the adsorption force of the vacuum chuck is greater than the adhesion force of the adhesive bonding material between the screen and the middle frame, and the screen will be separated from the middle frame and successfully disassembled.

[0016] As a further improvement of the present invention: The screen adsorption device is fixed on a fixed base.

[0017] As a further improvement of the present invention: The disassembly component includes a rotary connection portion and a rotary lifting component. The rotary connection portion is fixed on the fixed base. The rotary connection portion and the middle frame fixing component are rotatably connected. The rotary lifting component includes slide rails and rotary balls arranged at both ends of the fixed base, and ramp blocks arranged at the lower edges on both sides of the middle frame fixing component. The ramp blocks correspond to the rotary balls. The rotary balls are slidably connected to the slide rails, and the rotary balls are connected to a motor.

[0018] As a further improvement of the present invention: The screen heating component is arranged on one side of the screen adsorption device. The screen of the mobile phone is heated by the screen heating component to weaken the viscosity of the adhesive on the back of the screen, facilitating the disassembly of the screen and the middle frame.

[0019] As a further improvement of the present invention: The screen adsorption device is provided with a heat preservation table, and the heat preservation table is respectively connected to a heat preservation table temperature monitoring wire and a heat preservation table heating wire.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The present invention is provided with a middle frame fixing component. The middle frame fixing component is provided with a middle frame fixing hole. A screw passes through the middle frame fixing hole to fix the middle frame and the middle frame fixing component, avoiding the force contact on the outer surface of the middle frame during the screen disassembly process, preventing the outer surface of the middle frame from being damaged, improving the stability of screen disassembly, and reducing the waste of screen and middle frame materials during the disassembly process.

[0022] 2. The present invention is provided with a disassembly component. By starting the motor, the rotating ball can slide from one end far away from the rotating connection part to the end close to the rotating connection part, driving the ramp block and the middle frame fixing component to slowly rise, separating and disassembling the screen and the middle frame of the mobile phone, realizing the automatic disassembly of the screen and the middle frame, improving the stability of screen disassembly, reducing the workload of manual disassembly, and improving the disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the middle frame fixing component.

[0024] Figure 2 It is a schematic structural diagram of the screen adsorption device.

[0025] Figure 3 It is a schematic assembly structural diagram of the middle frame fixing component and the screen adsorption device.

[0026] Figure 4 It is a schematic structural diagram of the upper cover plate, the height adjustment plate and the middle frame fixing plate.

[0027] Figure 5 It is a schematic assembly structural diagram of the upper cover plate, the height adjustment plate and the middle frame fixing plate.

[0028] Figure 6 It is a schematic structural diagram of the middle frame fixing plate.

[0029] Figure 7 It is a schematic structural diagram of the upper cover plate, the height adjustment plate and the middle frame fixing plate from another angle.

[0030] Reference numerals: 1, screen adsorption device; 2, middle frame fixing component; 21, upper cover plate; 211, cavity; 22, height adjustment plate; 23, middle frame fixing plate; 231, middle frame connection part; 232, middle frame fixing hole; 233, support part; 24, positioning seat; 3, fixed base; 4, rotating connection part; 5, slide rail; 6, rotating ball. DETAILED DESCRIPTION OF THE INVENTION

[0031] In this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the related terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0032] Please refer to Figure 1-7 , a heating disassembly device for separating a screen from a middle frame, comprising:

[0033] A screen heating assembly for heating the screen;

[0034] A screen adsorption device 1 for adsorbing the screen of a mobile phone;

[0035] A middle frame fixing assembly 2 for fixing the middle frame of a mobile phone;

[0036] A disassembly assembly respectively connected to the screen adsorption device and the middle frame fixing assembly for driving the middle frame fixing assembly away from the screen adsorption device.

[0037] The middle frame fixing assembly 2 includes a positioning seat 24 and a middle frame fixing plate 23. The middle frame fixing plate is fixed on the positioning seat, and the middle frame fixing plate is provided with middle frame fixing holes.

[0038] During use, a screw passes through the middle frame fixing hole and rotates to be fixed with the corresponding screw hole of the mobile phone middle frame, so as to fix the mobile phone middle frame on the middle frame fixing plate.

[0039] Preferably, the middle frame fixing assembly 2 includes a positioning seat 24, an upper cover plate 21 and a middle frame fixing plate 23. The upper cover plate is provided with a cavity 211. The upper cover plate is fixed on the positioning seat, and the middle frame fixing plate is arranged on the upper cover plate.

[0040] The middle frame fixing plate 23 is recessed towards the cavity of the upper cover plate to form a middle frame connecting portion 231. The middle frame connecting portion is provided with middle frame fixing holes 232. The middle frame fixing plate further includes a support portion 233, and the support portion is connected to the upper cover plate through a connecting member.

[0041] When disassembling the screen and the middle frame of the mobile phone, place the position of the middle frame of the mobile phone on the side of the middle frame connecting portion away from the support portion. A screw passes through the middle frame fixing hole to fix the middle frame with the middle frame fixing assembly, and the outer surface of the middle frame is avoided from being stressed and contacted during the screen disassembly process, so as to avoid damage to the outer surface of the middle frame.

[0042] Since the middle frame fixing plate is connected to the upper cover plate through a connecting member, different middle frame fixing plates can be replaced by loosening the connecting member, and a suitable middle frame fixing plate can be selected according to different mobile phones, improving the applicable range of the middle frame fixing component.

[0043] The middle frame fixing plate and the upper cover plate are fixedly connected by screws.

[0044] More preferably, the middle frame fixing component 2 includes a positioning seat 24, an upper cover plate 21, a height adjusting plate 22 and a middle frame fixing plate 23. The upper cover plate is provided with a cavity. The middle frame fixing plate is connected to the upper cover plate through a connecting member. The height adjusting plate is arranged between the middle frame fixing plate and the upper cover plate, and the upper cover plate is fixed on the positioning seat. The height adjusting plate adjusts the height of the middle frame fixing plate by adjusting the distance between the middle frame fixing plate and the upper cover plate. A suitable height adjusting plate is selected according to different mobile phones, improving the applicable range of the middle frame fixing component.

[0045] Preferably, the screen adsorption device is a vacuum chuck.

[0046] The vacuum chuck is connected to a vacuum pump. Turning on the vacuum pump can make the vacuum chuck firmly suck the screen of the mobile phone. When the middle frame fixing component rises above the horizontal plane of the vacuum chuck during the rising process, the adsorption force of the vacuum chuck is greater than the adhesion force of the adhesive bonding material between the screen and the middle frame, and the screen will separate from the middle frame and be successfully disassembled.

[0047] The screen adsorption device 1 is fixed on the fixed base 3.

[0048] The disassembly component includes a rotary connection part 4 and a rotary lifting component. The rotary connection part 4 is fixed on the fixed base 3, and the rotary connection part is rotatably connected to the middle frame fixing component. The rotary lifting component includes slide rails 5 and rotary balls 6 arranged at both ends of the fixed base, and slope blocks arranged at the lower edges on both sides of the middle frame fixing component. The slope blocks correspond to the rotary balls. The rotary balls are slidably connected to the slide rails, and the rotary balls are connected to a motor.

[0049] Start the motor to make the rotary balls slide from the end far away from the rotary connection part to the end close to the rotary connection part. When the rotary balls slide, they drive the slope blocks to rise slowly, thereby driving the middle frame fixing component to rise slowly.

[0050] The screen heating component is arranged on one side of the screen adsorption device.

[0051] Heat the screen of the mobile phone through the screen heating component to weaken the viscosity of the adhesive on the back of the screen, facilitating the disassembly of the screen and the middle frame.

[0052] The heating temperature of the screen heating component is 70 - 80 degrees, and the heating time is 3 - 5 minutes;

[0053] Preferably, the screen adsorption device is provided with a warming table, which is respectively connected to a warming table temperature monitoring wire and a warming table heating wire. By providing the warming table, the heated screen can be kept warm.

[0054] The middle frame fixing component is made of hard stainless steel.

[0055] During the disassembly process, the position of the middle frame fixing hole is consistent with the fixing position of the middle frame main board small board. Screws pass through the middle frame fixing hole to fix the middle frame and the middle frame fixing component. The cavity of the upper cover plate is slightly larger than the middle frame, so that the outer surface of the middle frame does not contact the upper cover plate, and the middle frame is prevented from being stressed and contacted during the screen disassembly process, avoiding damage to the appearance of the middle frame.

[0056] The working principle of the present invention:

[0057] When disassembling the screen and the middle frame of the mobile phone, place the screen of the mobile phone on the screen heating component to heat the screen of the mobile phone, thereby weakening the viscosity of the adhesive at the back of the screen and facilitating the disassembly of the screen and the middle frame;

[0058] After the heating is completed, fixedly connect the middle frame and the middle frame fixing component with screws, place the screen at the vacuum suction cup, turn on the high-pressure pump, and the screen is firmly sucked by the vacuum suction cup;

[0059] Start the motor to make the rotating ball slide from the end far away from the rotating connection part to the end close to the rotating connection part. When the rotating ball slides, it drives the ramp block to slowly rise, drives the middle frame fixing component to slowly rise, and thus drives the middle frame to slowly rise, separating and disassembling the screen and the middle frame of the mobile phone.

[0060] Embodiment 1:

[0061] A heating disassembly device for separating a screen and a middle frame, comprising: a screen heating component for heating the screen; a screen adsorption device for adsorbing the screen of the mobile phone; a middle frame fixing component for fixing the middle frame of the mobile phone; and a disassembly component respectively connected to the screen adsorption device and the middle frame fixing component for driving the middle frame fixing component away from the screen adsorption device.

[0062] The middle frame fixing component includes a positioning seat, an upper cover plate, a height adjusting plate and a middle frame fixing plate. The upper cover plate is provided with a cavity. The middle frame fixing plate is connected to the upper cover plate through a connecting member. The height adjusting plate is arranged between the middle frame fixing plate and the upper cover plate. The upper cover plate is fixed on the positioning seat. The middle frame fixing plate is recessed towards the cavity of the upper cover plate to form a middle frame connecting part. The middle frame connecting part is provided with a middle frame fixing hole. The middle frame fixing plate further includes a supporting part, and the supporting part is connected to the upper cover plate through a connecting member. The middle frame fixing component is made of hard stainless steel.

[0063] The screen adsorption device is a vacuum chuck, which is connected to a vacuum pump. Turning on the vacuum pump can make the vacuum chuck firmly suck the screen of the mobile phone. When the middle frame fixing component rises above the horizontal plane of the vacuum chuck during the rising process, the adsorption force of the vacuum chuck is greater than the adhesion force of the adhesive bonding material between the screen and the middle frame, and the screen will be separated from the middle frame and successfully disassembled.

[0064] The disassembly component includes a rotary connection part and a rotary lifting component. The screen adsorption device is fixed on a fixed base. The rotary connection part is fixed on the fixed base, and the rotary connection part is rotatably connected to the middle frame fixing component. The rotary lifting component includes slide rails and rotary balls arranged at both ends of the fixed base, and slope blocks arranged at the lower edges on both sides of the middle frame fixing component. The slope blocks correspond to the rotary balls. The rotary balls are slidably connected to the slide rails, and the rotary balls are connected to a motor. Starting the motor makes the rotary balls slide from the end far from the rotary connection part to the end close to the rotary connection part. When the rotary balls slide, they drive the slope blocks to rise slowly, thereby driving the middle frame fixing component to rise slowly. During the disassembly process, the position of the middle frame fixing hole is consistent with the fixing position of the middle frame main board and the small board. Screws pass through the middle frame fixing holes to fix the middle frame and the middle frame fixing component. The cavity of the upper cover plate is slightly larger than the middle frame, so that the outer surface of the middle frame does not contact the upper cover plate, and the middle frame is prevented from being stressed and contacting during the screen disassembly process, avoiding damage to the appearance of the middle frame.

[0065] The screen heating component is arranged on one side of the screen adsorption device. The screen of the mobile phone is heated by the screen heating component to weaken the viscosity of the adhesive on the back of the screen, facilitating the disassembly of the screen from the middle frame. The heating temperature of the screen heating component is 75 degrees, and the heating time is 4 minutes.

[0066] The screen adsorption device is provided with a heat preservation table, which is respectively connected to a heat preservation table temperature monitoring wire and a heat preservation table heating wire. By providing the heat preservation table, the heated screen can be kept warm.

[0067] Embodiment 2:

[0068] A heating disassembly device for separating a screen from a middle frame, comprising: a screen heating component for heating the screen; a screen adsorption device for adsorbing the screen of the mobile phone; a middle frame fixing component for fixing the middle frame of the mobile phone; and a disassembly component respectively connected to the screen adsorption device and the middle frame fixing component for driving the middle frame fixing component away from the screen adsorption device.

[0069] The middle frame fixing component includes a positioning seat and a middle frame fixing plate. The middle frame fixing plate is fixed on the positioning seat, and the middle frame fixing plate is provided with middle frame fixing holes. During use, screws pass through the middle frame fixing holes and rotate to fix with the screw holes corresponding to the middle frame of the mobile phone, thereby fixing the middle frame of the mobile phone on the middle frame fixing plate.

[0070] The screen adsorption device is a vacuum chuck, which is connected to a vacuum pump. Turning on the vacuum pump can make the vacuum chuck firmly suck the screen of the mobile phone. When the middle frame fixing component rises above the horizontal plane of the vacuum chuck during the rising process, the adsorption force of the vacuum chuck is greater than the adhesion force of the adhesive bonding material between the screen and the middle frame, and the screen will separate from the middle frame and be successfully disassembled.

[0071] The screen adsorption device is fixed on the fixed base.

[0072] The disassembly component includes a rotary connection part and a rotary lifting component. The rotary connection part is fixed on the fixed base, and the rotary connection part is rotatably connected to the middle frame fixing component. The rotary lifting component includes slide rails and rotary balls arranged at both ends of the fixed base, and ramp blocks arranged at the lower edges on both sides of the middle frame fixing component. The ramp blocks correspond to the rotary balls, the rotary balls are slidably connected to the slide rails, and the rotary balls are connected to the motor.

[0073] The screen heating component is arranged on one side of the screen adsorption device. The screen of the mobile phone is heated by the screen heating component to weaken the viscosity of the adhesive on the back of the screen, facilitating the disassembly of the screen and the middle frame. The heating temperature of the screen heating component is 70 degrees, and the heating time is 5 minutes. The screen adsorption device is provided with a heat preservation table, which is respectively connected to a heat preservation table temperature monitoring wire and a heat preservation table heating wire. By providing the heat preservation table, the heated screen can be heat-preserved.

[0074] Embodiment Case Three:

[0075] A heating disassembly device for separating a screen from a middle frame, comprising: a screen heating component for heating the screen; a screen adsorption device for adsorbing the screen of the mobile phone; a middle frame fixing component for fixing the middle frame of the mobile phone; and a disassembly component respectively connected to the screen adsorption device and the middle frame fixing component for driving the middle frame fixing component away from the screen adsorption device.

[0076] The middle frame fixing component includes a positioning seat, an upper cover plate and a middle frame fixing plate. The upper cover plate is provided with a cavity, the upper cover plate is fixed on the positioning seat, and the middle frame fixing plate is arranged on the upper cover plate. The middle frame fixing plate is recessed towards the cavity of the upper cover plate to form a middle frame connection part. The middle frame connection part is provided with a middle frame fixing hole. The middle frame fixing plate further includes a support part, and the support part is connected to the upper cover plate through a connecting piece. Since the middle frame fixing plate is connected to the upper cover plate through a connecting piece, different middle frame fixing plates can be replaced by loosening the connecting piece, and a suitable middle frame fixing plate can be selected according to different mobile phones, improving the applicable range of the middle frame fixing component. The middle frame fixing plate is fixedly connected to the upper cover plate by screws. The middle frame fixing component is made of hard stainless steel material.

[0077] The screen adsorption device is a vacuum chuck, and the vacuum chuck is connected to a vacuum pump. The screen adsorption device is fixed on a fixed base.

[0078] The disassembly component includes a rotary connection part and a rotary lifting component. The rotary connection part is fixed on the fixed base, and the rotary connection part is rotatably connected to the middle frame fixing component; the rotary lifting component includes slide rails and rotary balls arranged at both ends of the fixed base, and slope blocks arranged at the lower edges on both sides of the middle frame fixing component. The slope blocks correspond to the rotary balls, the rotary balls are slidably connected to the slide rails, and the rotary balls are connected to a motor.

[0079] The screen heating component is arranged on one side of the screen adsorption device.

[0080] The heating temperature of the screen heating component is 80 degrees, and the heating time is 3 minutes. The screen adsorption device is provided with a heat preservation table, and the heat preservation table is respectively connected to a heat preservation table temperature monitoring line and a heat preservation table heating line. By providing the heat preservation table, the heated screen can be kept warm.

[0081] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper end face", "lower end face", "top", "bottom", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention. Therefore, it cannot be understood as a limitation on the actual use direction of the present invention.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A heating disassembly device for separating a screen from a middle frame, characterized in that: Comprising: A screen heating component for heating the screen of a mobile phone; A screen adsorption device for adsorbing the screen of a mobile phone; A middle frame fixing component for fixing the middle frame of a mobile phone; A disassembly component respectively connected to the screen adsorption device and the middle frame fixing component for driving the middle frame fixing component away from the screen adsorption device; The middle frame fixing component includes a positioning seat, an upper cover plate, a height adjusting plate and a middle frame fixing plate. The upper cover plate is provided with a cavity. The middle frame fixing plate is connected to the upper cover plate through a connecting piece. The height adjusting plate is arranged between the middle frame fixing plate and the upper cover plate. The upper cover plate is fixed on the positioning seat; The middle frame fixing plate is recessed upward into the cavity of the upper cover plate to form a middle frame connecting part. The middle frame connecting part is provided with a middle frame fixing hole. The middle frame fixing plate further includes a supporting part, and the supporting part is connected to the upper cover plate through a connecting piece.

2. The heating and disassembling device for separating a screen from a middle frame according to claim 1, wherein: The middle frame fixing plate and the upper cover plate are fixedly connected by screws.

3. The heating and disassembling device for separating a screen from a middle frame according to claim 2, wherein: The screen adsorption device is a vacuum chuck, and the vacuum chuck is connected with a vacuum pump.

4. A heating disassembly device for separating a screen from a middle frame according to claim 3, characterized in that: The screen adsorption device is fixed on a fixed base.

5. The heating and disassembling device for separating a screen from a middle frame according to claim 4, wherein: The disassembly component includes a rotary connecting part and a rotary lifting component. The rotary connecting part is fixed on the fixed base, and the rotary connecting part is rotatably connected with the middle frame fixing component; The rotary lifting component includes slide rails and rotary balls arranged at both ends of the fixed base, and slope blocks arranged at the lower edges on both sides of the middle frame fixing component. The slope blocks correspond to the rotary balls. The rotary balls are slidably connected with the slide rails, and the rotary balls are connected with a motor.

6. The heating and disassembling device for separating a screen from a middle frame according to claim 5, wherein: The screen adsorption device is provided with a heat preservation table, and the heat preservation table is respectively connected with a heat preservation table temperature monitoring wire and a heat preservation table heating wire.

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