A shaver sintering apparatus

Abstract

The utility model relates to razor technical field discloses a razor sintering equipment, including heat preservation pipe and install heating pipe in heat preservation pipe inside, the heat preservation pipe surface is equipped with the air inlet pipe, the air inlet pipe is helical and is equipped with in heating pipe surface, the air inlet pipe other end is equipped with in heating pipe surface, the heat preservation pipe both ends all are equipped with cleaning assembly. This razor sintering equipment, through the even heating of annular arrangement's multiple electric heating plate, and preheat to the protective gas in combination helical air inlet pipe, avoided the problem of axial and radial temperature unevenness that traditional sintering furnace led to because of "heating area polygon effect", simultaneously, through the inert gas injection of preheating, cooperate the communication pipe and exhaust pipe of diagonal setting, can form and maintain a stable flowing positive pressure inert gas environment in the furnace, thereby dispelling and replacing the residual oxygen in heating pipe, reduce the risk of oxidation reaction of blade in high temperature sintering process.

Description

Technical Field

[0001] This utility model relates to the field of razor technology, specifically to a razor sintering device. Background Technology

[0002] To improve user comfort, traditional manual razor blades require a coating on the blade edge, typically Teflon, which offers excellent lubrication. However, Teflon requires a specific temperature to adhere evenly to the blade edge. Existing sintering furnaces use heating zones on one side of the furnace body, heating the entire furnace via heat transfer. However, Teflon coating requires very precise temperature control. Existing equipment suffers from a polygonal heating zone effect, resulting in uneven heat distribution within the furnace, with higher temperatures in the center or near the heating zones. This uneven heating often leads to excessively thick or thin coatings, causing blistering or even peeling, severely impacting product quality.

[0003] An existing patent (publication number: CN116358286A) discloses a blade sintering furnace, which includes a furnace body, a first heating chamber, and a second heating chamber. The furnace body is disposed within the second heating chamber, and the second heating chamber is disposed within the first heating chamber. A heating device is disposed within the first heating chamber to provide the heat source required by the furnace body. The furnace body is used to heat Teflon-coated blades. Air ducts are disposed at both the upper and lower ends of the second heating chamber. The air ducts are located at the upper and lower ends of the furnace body. Several sets of air volume regulating devices are disposed within the air ducts, and the several sets of air volume regulating devices are disposed at intervals. The air ducts are connected to the first heating chamber.

[0004] Although the application provides air ducts and air volume adjustment devices at both the top and bottom of the furnace body, which allows for controllable heating temperature and improved flexibility in the blade heating process, and simultaneous heating from both the top and bottom of the furnace body to increase heating efficiency, it cannot control the sintering atmosphere inside the furnace. This results in the blades being prone to oxidation reactions with residual oxygen in the heating tubes during high-temperature sintering, thus affecting the adhesion and uniformity of the Teflon coating. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a sintering device for razors, which solves the problem that the sintering atmosphere inside the furnace cannot be controlled, causing the blades to easily react with residual oxygen in the heating tube during high-temperature sintering, thus affecting the adhesion and uniformity of the Teflon coating.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sintering device for shavers, comprising a heat-insulating tube and a heating tube installed inside the heat-insulating tube, wherein an air inlet pipe is provided through the surface of the heat-insulating tube, the air inlet pipe is spirally sleeved on the surface of the heating tube, the other end of the air inlet pipe is provided through the surface of the heating tube, and cleaning components are installed at both ends of the heat-insulating tube.

[0007] The cleaning assembly includes mounting frames fixed at both ends of the insulation pipe. The mounting frames are respectively connected to the air inlet and air outlet of the heating pipe. Multiple electric heating plates are installed on the inner wall of the heating pipe in a ring arrangement. A connecting pipe passes through the surface of the heating pipe and is connected to the insulation pipe through the connecting pipe. The connecting pipe is located at the feed end of the heating pipe.

[0008] The above scheme allows multiple electric heating plates arranged in a ring to achieve uniform, circumferential heating of the heating tube, avoiding the problem of uneven temperature caused by unilateral heating, which is conducive to uniform coating adhesion. In addition, the cleaning component can not only clean the blade belt, but also reduce gas leakage and oxygen backflow.

[0009] Furthermore, a connecting plate is fixed to the side of the heating tube, and the other end of the connecting plate is fixed to the inner wall of the insulation tube. The heating tube is fixed inside the insulation tube by the connecting plate and the mounting frame. The cavity between the insulation tube and the heating tube is a preheating cavity. An exhaust pipe is provided on the surface of the insulation tube and is located at the other end relative to the connecting tube.

[0010] With the above scheme, the air inlet pipe spirals through the preheating chamber, which can use the residual heat emitted by the furnace body to preheat the injected inert gas, reduce the impact on the sintering temperature in the furnace, and help maintain temperature stability. At the same time, in the atmosphere of inert gas, oxidation of the blade surface at high temperature can be prevented, avoiding contamination, thereby ensuring a strong bond between the coating and the blade substrate.

[0011] Furthermore, the surface of the insulation pipe is provided with a plurality of reinforcing ribs arranged in a circle, and a support plate is fixed on the lower surface of the insulation pipe.

[0012] The above solutions enhance the overall structural strength of the insulation pipe, ensuring the stability of the equipment under long-term high-temperature operation; the support plate provides stable support for the equipment, facilitating installation and positioning.

[0013] Furthermore, the cleaning assembly also includes an upper mounting plate hinged to the inner wall of the mounting frame. A knob is provided above the insulation pipe, and a threaded rod is fixed to the lower surface of the knob. A threaded groove corresponding to the threaded rod is opened on the surface of the insulation pipe. The threaded rod is threaded into the threaded groove, and its lower end passes through the interior of the insulation pipe. A push rod is rotatably connected to the end face of the threaded rod. An installation groove is opened on the surface of the upper mounting plate, and the lower end of the push rod is hinged to the inner wall of the installation groove.

[0014] With the above solution, the angle of the upper and lower mounting plates can be precisely controlled by rotating the knob, thereby adapting to blades of different thicknesses or with a small amount of attached material, and ensuring that they fit well with the blades when closed, forming an effective seal to prevent external air from entering the furnace.

[0015] Furthermore, a lower mounting plate is hinged inside the mounting frame, and the lower mounting plate is located below the upper mounting plate. Connecting rods are hinged to the sides of both the upper and lower mounting plates. The lower and upper mounting plates rotate synchronously through a linkage structure formed by the connecting rods. Cleaning blocks are installed on the surfaces of both the upper and lower mounting plates. A movable groove is provided on the inner sidewall of the mounting frame, and the connecting rod is movably engaged inside the movable groove.

[0016] Furthermore, the cleaning assembly also includes a guide plate, which is fixed to the inner wall of another mounting frame. There are two guide plates, and the included angle of the two guide plates is the same as the included angle formed by the upper mounting plate and the lower mounting plate.

[0017] Through the above scheme, the linkage structure ensures that the upper and lower mounting plates can move synchronously in opposite directions, realizing simultaneous cleaning and effective sealing of the upper and lower surfaces of the blade belt. The cleaning block can scrape off impurities on the surface of the blade belt when it enters and exits the furnace body, preventing contaminants from being carried into the sintering zone, thereby ensuring the coating quality.

[0018] Furthermore, the outer periphery of the insulation pipe is covered with an outer protective sleeve, and a pressure gauge and a pressure relief valve are installed on the surface of the outer protective sleeve. The lower ends of the pressure gauge and the pressure relief valve are both inserted inside the heating pipe.

[0019] Through the above scheme, the pressure gauge can monitor the gas pressure inside the heating tube in real time, ensuring a stable positive pressure in the inert gas atmosphere, which is crucial to preventing oxygen infiltration. The pressure relief valve provides overpressure protection, enhancing the safety of the equipment.

[0020] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0021] 1. This shaving sintering equipment uses multiple electric heating plates arranged in a ring for uniform heating, combined with a spiral air inlet pipe to preheat the protective gas. This avoids the axial and radial temperature unevenness caused by the "polygonal effect of the heating area" in traditional sintering furnaces. At the same time, by injecting preheated inert gas, along with diagonally arranged connecting pipes and exhaust pipes, a stable positive pressure inert gas environment can be formed and maintained in the furnace. This dissipates and replaces residual oxygen in the heating tubes, reducing the risk of oxidation reaction between the blades and oxygen during high-temperature sintering. Furthermore, the cleaning component not only effectively cleans the blade strip through the structure of the upper and lower mounting plates, preventing contaminants from entering the furnace, but also reduces the risk of gas leakage and oxygen backflow. Attached Figure Description

[0022] Figure 1 This is a diagram illustrating the overall structure of this application;

[0023] Figure 2 This is a front sectional view of the structure of this application;

[0024] Figure 3 This is a side sectional view of the structure of this application;

[0025] Figure 4 This is a partial cross-sectional view of the cleaning component in this application;

[0026] Figure 5 This is a detailed structural diagram of the upper mounting plate, connecting rod, and lower mounting plate in this application.

[0027] In the picture:

[0028] 1. Insulation pipe; 101. Support plate; 102. Reinforcing rib; 103. Exhaust pipe;

[0029] 2. Heating element; 201. Electric heating plate; 202. Connecting plate; 203. Connecting pipe;

[0030] 3. Outer sheath; 4. Intake pipe;

[0031] 5. Cleaning components; 501. Mounting frame; 502. Upper mounting plate; 503. Knob; 504. Threaded rod; 505. Push rod; 506. Mounting slot; 507. Cleaning block; 508. Lower mounting plate; 509. Connecting rod; 510. Movable slot; 511. Guide plate;

[0032] 6. Pressure gauge; 7. Pressure relief valve. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Please see Figure 1-5 This embodiment of a sintering device for shavers includes a heat-insulating pipe 1 and a heating pipe 2 installed inside the heat-insulating pipe 1. An air inlet pipe 4 is threaded through the surface of the heat-insulating pipe 1 and spirally sleeved on the surface of the heating pipe 2. The other end of the air inlet pipe 4 is threaded through the surface of the heating pipe 2. Cleaning components 5 are installed at both ends of the heat-insulating pipe 1. The device is uniformly heated by multiple annularly arranged electric heating plates 201 and preheated with the protective gas by the spiral air inlet pipe 4. This avoids the problem of uneven axial and radial temperatures caused by the "polygonal effect of the heating area" in traditional sintering furnaces. At the same time, by injecting preheated inert gas, and with the diagonally arranged connecting pipe 203 and exhaust pipe 103, a stable positive pressure inert gas environment can be formed and maintained in the furnace, thereby dispersing and replacing residual oxygen in the heating pipe 2 and reducing the risk of oxidation reaction between the blade and oxygen during high-temperature sintering. Furthermore, the cleaning components 5 not only achieve effective cleaning of the blade strip through the structure of the upper and lower mounting plates 508 to prevent contaminants from entering the furnace, but also reduce the risk of gas leakage and oxygen backflow.

[0035] The cleaning component 5 includes mounting frames 501 fixed at both ends of the insulation pipe 1. The mounting frames 501 are connected to the air inlet and air outlet of the heating pipe 2, respectively. Multiple electric heating plates 201 are installed on the inner wall of the heating pipe 2 in a ring arrangement. A connecting pipe 203 passes through the surface of the heating pipe 2, and the heating pipe 2 is connected to the insulation pipe 1 through the connecting pipe 203. The connecting pipe 203 is located at the feed end of the heating pipe 2. The multiple electric heating plates 201 arranged in a ring can achieve uniform and circumferential heating of the heating pipe 2, avoiding the problem of uneven temperature caused by unilateral heating, which is conducive to uniform coating adhesion. In addition, the cleaning component 5 can not only clean the blade belt, but also reduce gas leakage and oxygen backflow.

[0036] In addition, a connecting plate 202 is fixed to the side of the heating tube 2, and the other end of the connecting plate 202 is fixed to the inner wall of the insulation tube 1. The heating tube 2 is fixed inside the insulation tube 1 through the connecting plate 202 and the mounting frame 501. The cavity between the insulation tube 1 and the heating tube 2 is a preheating cavity. An exhaust pipe 103 is installed on the surface of the insulation tube 1. The exhaust pipe 103 is located at the other end relative to the connecting pipe 203. The air inlet pipe 4 spirals through the preheating cavity, which can use the residual heat emitted by the furnace body to preheat the injected inert gas, reducing the impact on the sintering temperature inside the furnace. It helps maintain temperature stability, and in an inert gas atmosphere, it can prevent the blade surface from oxidizing at high temperatures, avoiding contamination, thereby ensuring a strong bond between the coating and the blade substrate; the surface of the insulation tube 1 is provided with multiple circularly arranged reinforcing ribs 102, and a support plate 101 is fixed to the lower surface of the insulation tube 1. The reinforcing ribs 102 enhance the overall structural strength of the insulation tube 1, ensuring the stability of the equipment under long-term high-temperature operation; the support plate 101 provides stable support for the equipment, facilitating installation and positioning.

[0037] The cleaning assembly 5 also includes an upper mounting plate 502 hinged to the inner wall of the mounting frame 501. A knob 503 is provided above the insulation pipe 1. A threaded rod 504 is fixed to the lower surface of the knob 503. A threaded groove corresponding to the threaded rod 504 is opened on the surface of the insulation pipe 1. The threaded rod 504 is threaded into the threaded groove and its lower end passes through the interior of the insulation pipe 1. A push rod 505 is rotatably connected to the end face of the threaded rod 504. An installation groove 506 is opened on the surface of the upper mounting plate 502. The lower end of the push rod 505 is hinged to the inner wall of the installation groove 506. The angle of the upper and lower mounting plates 508 can be precisely controlled by rotating the knob 503, thereby adapting to knife strips of different thicknesses or with a small amount of attached matter, and ensuring that they fit well with the knife strip when closed, forming an effective seal and preventing external air from entering the furnace.

[0038] The mounting frame 501 is also hinged to a lower mounting plate 508, which is located below the upper mounting plate 502. Both the upper mounting plate 502 and the lower mounting plate 508 are hinged to connecting rods 509 on their sides. The lower mounting plate 508 and the upper mounting plate 502 rotate synchronously through the connecting rods 509. Cleaning blocks 507 are installed on the surfaces of both the upper mounting plate 502 and the lower mounting plate 508. The inner side wall of the mounting frame 501 is provided with a movable groove 510, and the connecting rods 509 are movably engaged in the movable groove 510. The connecting rod structure ensures that the upper and lower mounting plates 508 can move synchronously in opposite directions, realizing simultaneous cleaning and effective sealing of the upper and lower surfaces of the blade belt. The cleaning blocks 507 can scrape off impurities on the surface of the blade belt when it enters and exits the furnace body, preventing contaminants from being carried into the sintering zone, thereby ensuring the coating quality.

[0039] It should be noted that the insulation pipe 1 is surrounded by an outer sheath 3. A pressure gauge 6 and a pressure relief valve 7 are installed on the surface of the outer sheath 3. The lower ends of both the pressure gauge 6 and the pressure relief valve 7 are inserted inside the heating pipe 2. The pressure gauge 6 can monitor the gas pressure inside the heating pipe 2 in real time to ensure a stable positive pressure of the inert gas atmosphere, which is crucial to prevent oxygen from seeping in. The pressure relief valve 7 provides overpressure protection, improving the safety of the equipment.

[0040] The working principle of the above embodiments is as follows:

[0041] First, the device is placed in a designated location and connected to an external power source and control equipment. The control equipment includes known conventional devices such as a controller and a computer with control functions. Then, the operator passes the razor blade through the heating tube 2 and controls the electric heating plate 201 to sinter the razor blade through the control equipment. Subsequently, the operator injects inert gas into the heating tube 2 through the air inlet pipe 4. During the sintering process, the heat emitted by the heating tube 2 heats the air inlet pipe 4 in the preheating chamber, thereby preheating the inert gas. During the injection of inert gas, the residual oxygen in the heating tube 2 is pushed to continue moving, thereby expelling the residual oxygen from the heating tube 2 through the connecting pipe 203 and into the preheating chamber. At the same time, the residual heat carried by the gas can further heat the preheating chamber. Subsequently, the gas is discharged from the preheating chamber through the exhaust pipe 103 installed on the surface of the insulation pipe 1.

[0042] In the process of the razor blade passing through the heating tube 2, one end of the blade is first passed through the middle of the upper mounting plate 502 and the lower mounting plate 508. Then, the operator turns the knob 503, which drives the threaded rod 504 to rotate. With the cooperation of the threaded groove, the threaded rod 504 and the push rod 505 rotatably connected to the lower end face of the threaded rod 504 move downward, thereby driving the upper mounting plate 502 to rotate along its hinge point. With the linkage structure formed by the connecting rod 509, the upper mounting plate 502 can drive the lower mounting plate 508 to rotate synchronously during the rotation of the upper mounting plate 502. This allows the cleaning block 507 to clean the blade, and finally, it passes through the middle of the guide plate 511. At the same time, the included angle between the upper mounting plate 502 and the lower mounting plate 508 can also prevent the gas in the heating tube 2 from escaping from the position of the mounting frame 501, thus improving the safety of the sintering process.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sintering device for razors, characterized in that: It includes a heat insulation pipe (1) and a heating pipe (2) installed inside the heat insulation pipe (1). An air inlet pipe (4) is provided on the surface of the heat insulation pipe (1). The air inlet pipe (4) is spirally sleeved on the surface of the heating pipe (2). The other end of the air inlet pipe (4) is provided on the surface of the heating pipe (2). Cleaning components (5) are installed at both ends of the heat insulation pipe (1). The cleaning component (5) includes mounting frames (501) fixed at both ends of the insulation pipe (1). The mounting frames (501) are connected to the air inlet and air outlet of the heating pipe (2) respectively. An electric heating plate (201) is installed on the inner wall of the heating pipe (2). There are multiple electric heating plates (201) arranged in a ring. A connecting pipe (203) is provided on the surface of the heating pipe (2). The heating pipe (2) is connected to the insulation pipe (1) through the connecting pipe (203). The connecting pipe (203) is located at the feed end of the heating pipe (2).

2. The sintering equipment for shavers according to claim 1, characterized in that: A connecting plate (202) is fixed to the side of the heating tube (2). The other end of the connecting plate (202) is fixed to the inner wall of the insulation tube (1). The heating tube (2) is fixed inside the insulation tube (1) by the connecting plate (202) and the mounting frame (501). The cavity between the insulation tube (1) and the heating tube (2) is a preheating cavity. An exhaust pipe (103) is provided on the surface of the insulation tube (1). The exhaust pipe (103) is located at the other end relative to the connecting pipe (203).

3. The sintering equipment for shavers according to claim 1, characterized in that: The surface of the insulation pipe (1) is provided with a plurality of reinforcing ribs (102) arranged in a circle, and a support plate (101) is fixed on the lower surface of the insulation pipe (1).

4. The sintering equipment for shavers according to claim 1, characterized in that: The cleaning component (5) also includes an upper mounting plate (502) hinged to the inner wall of the mounting frame (501). A knob (503) is provided above the insulation pipe (1). A threaded rod (504) is fixed on the lower surface of the knob (503). A threaded groove corresponding to the threaded rod (504) is opened on the surface of the insulation pipe (1). The threaded rod (504) is threaded inside the threaded groove, and its lower end passes through the inside of the insulation pipe (1). A push rod (505) is rotatably connected to the end face of the threaded rod (504). An installation groove (506) is opened on the surface of the upper mounting plate (502). The lower end of the push rod (505) is hinged to the inner wall of the installation groove (506).

5. The sintering equipment for shavers according to claim 1, characterized in that: The mounting frame (501) is also hinged to a lower mounting plate (508), which is located below the upper mounting plate (502). Both the upper mounting plate (502) and the lower mounting plate (508) are hinged to connecting rods (509). The lower mounting plate (508) and the upper mounting plate (502) rotate synchronously through a linkage structure formed by the connecting rods (509). Cleaning blocks (507) are installed on the surfaces of both the upper mounting plate (502) and the lower mounting plate (508). The inner sidewall of the mounting frame (501) is provided with a movable groove (510), and the connecting rod (509) is movably engaged inside the movable groove (510).

6. The sintering equipment for shavers according to claim 1, characterized in that: The cleaning component (5) also includes a guide plate (511), which is fixed to the inner wall of another mounting frame (501). There are two guide plates (511), and the included angle of the two guide plates (511) is the same as the included angle formed by the upper mounting plate (502) and the lower mounting plate (508).

7. The sintering equipment for shavers according to claim 1, characterized in that: The insulation pipe (1) is covered with an outer sheath (3), and a pressure gauge (6) and a pressure relief valve (7) are installed on the surface of the outer sheath (3). The lower ends of the pressure gauge (6) and the pressure relief valve (7) are both inserted inside the heating pipe (2).

Images