Manual knife with heating function for wax mould processing

Abstract

The utility model provides a manual knife with a heating function for wax mould processing, and belongs to the technical field of precision casting of melting moulds. The manual knife with the heating function for wax mould processing comprises a knife rod part and a knife head part, a heating assembly used for heating the knife head part is arranged in the knife rod part, the knife rod part comprises an inner rod and an outer rod, the heating assembly comprises a coil and a power supply assembly, the knife head part comprises a blade and a connecting rod, the blade is connected with the connecting rod, the connecting rod is connected with the inner rod and extends into the coil, and the inner rod is connected with the outer rod. High-frequency current passes through the coil to heat the connecting rod in the air, and the outer rod is coaxially arranged on the outer side of the inner rod in a sleeving mode. When a worker processes a wax mould, the switch power supply is turned on, the coil is electrified, the connecting rod is heated through distance induction, then the blade is heated through heat conduction, open fire does not need to be used for heating the blade, and the effects that the blade heating operation is safe and environmentally friendly, and the processing efficiency is high are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of precision casting of dissolving mould, especially relates to a hand tool with heating function for wax mould processing. BACKGROUND

[0002] The precision casting of lost wax method is also called precision casting of investment mould, which is a precision casting process with little or no cutting. Simply speaking, it is to make a meltable model (referred to as investment mould or model) by using a meltable material (such as wax or plastic), coat several layers of special refractory coating on the model, form an integrated mould shell after drying and hardening, melt the model from the mould shell by using steam or hot water, fill dry sand around the mould shell to form a mould, and finally put the mould into a baking furnace for high-temperature baking. After the mould or mould shell is baked, molten metal is poured into the mould to obtain a casting.

[0003] The birdcage type wax mould is usually composed of a base, a central column, a pouring riser and a plurality of casting wax moulds. The central column is vertically connected to the disc-shaped base, the pouring riser is connected to the top end of the central column, and the plurality of casting wax moulds are distributed around the central column and connected to the pouring riser and the base at the same time. Before splicing the wax mould, the wax moulds of the casting wax mould, the pouring riser wax mould and other parts need to be processed by engraving and cutting at the defect and burr positions of the wax moulds, which requires the use of a hand tool.

[0004] In order to make the surface of the wax mould smooth at the processing position, a spray gun is needed to heat the hand tool. After heating, the hand tool processes the wax mould more smoothly, and the surface of the processing position is smooth. However, the step of heating the hand tool by using a flame spray gun is dangerous, and the temperature cools down quickly, so the hand tool needs to be heated frequently, which makes the worker's processing efficiency of the wax mould low. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides a hand tool with heating function for wax mould processing.

[0006] In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical scheme:

[0007] The utility model provides a hand tool with heating function for wax mould processing, which comprises a tool shank part and a tool head part, a heating assembly for heating the tool head part is arranged in the tool shank part, the tool shank part comprises an inner rod and an outer rod, the heating assembly comprises a coil and a power supply assembly, the tool head part comprises a blade and a connecting rod, the blade and the connecting rod are connected, the connecting rod is connected with the inner rod and extends into the coil, the connecting rod is heated by high-frequency current passing through the coil, and the outer rod is coaxially arranged on the outer side of the inner rod.

[0008] Further, the power supply assembly comprises a switching power supply, the switching power supply is built-in with a high-frequency oscillation circuit, the two ends of the coil are electrically connected with the switching power supply, and the blade and the connecting rod are made of copper.

[0009] Further, the inner rod adopts ceramic heat insulation material, and the outer rod adopts insulating material.

[0010] Further, the blade is detachably connected with the connecting rod, one end of the connecting rod extends out of the inner rod, a threaded hole is formed at the end of the connecting rod extending out of the inner rod, a connecting head is fixedly arranged at one end of the blade close to the connecting rod, and the connecting head is threadedly connected with the inner rod.

[0011] Further, the outer rod is provided with an anti-skid rubber sleeve.

[0012] Further, the outer rod is provided with an infrared temperature sensor for detecting the temperature of the connecting rod, and the end of the knife rod part away from the knife head part is provided with a display, the infrared temperature sensor is electrically connected with the display, and the display is used for displaying the temperature of the connecting rod.

[0013] Further, the inner rod and the outer rod are provided with a ventilation gap, the inner rod is provided with a heat dissipation hole for communicating the inside and the outside of the inner rod, both ends of the outer rod are provided with ventilation holes, and the outer rod is provided with a fan.

[0014] The hand tool has the advantages that when a worker processes a wax mold, a switch power supply is turned on to make the coil electrified, the connecting rod is heated through space induction, and the blade is heated through heat conduction, so that the blade is heated without using open fire, operation is safe and environment-friendly, heating effect is continuous, the blade does not need to be heated frequently, and processing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic diagram of the hand tool of the embodiment of the application.

[0016] Figure 2 It is an internal section structure schematic diagram of the hand tool of the embodiment of the application.

[0017] Among them, 11, the inner rod; 111, the heat dissipation hole; 12, the outer rod; 121, the ventilation hole; 13, the ventilation gap; 21, the blade; 22, the connecting rod; 23, the connecting head; 3, the coil; 4, the anti-skid rubber sleeve; 41, the display; 5, the infrared temperature sensor; 6, the fan. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0019] The embodiment of the application discloses a hand tool for processing a wax mold with a heating function, referring to Figure 1 and Figure 2The hand tool comprises a tool rod part and a tool head part, the tool head part is connected to one end of the tool rod part, a heating assembly is arranged in the tool rod part and used for heating the tool head part, a worker holds the tool rod part, and the wax mold can be processed by the tool head part after the tool head part is heated by the heating assembly, and a spray gun flame is not needed to heat the hand tool, and the operation is safer. Specifically, the tool rod part comprises an inner rod and an outer rod, the inner rod is used for connecting and mounting the tool head part and the heating assembly, and the outer rod is coaxially arranged outside the inner rod and is used for heat insulation and convenient holding by the worker. In the embodiment of the application, the heating assembly comprises a coil and a power supply assembly, the tool head part comprises a blade and a connecting rod, the coil is coaxially and fixedly arranged in the inner rod, one end of the connecting rod is fixedly connected to the inner rod, one end of the connecting rod is connected to the blade, and the other end of the connecting rod extends into the inner rod and is coaxially and spaced apart from the coil. The connecting rod and the blade are both made of conductive metal material, and specifically, the connecting rod and the blade can be made of copper material, and in other embodiments, the blade can also be made of stainless steel material. The power supply assembly provides high-frequency current for the coil, the coil generates an electromagnetic field through the high-frequency current passing through the coil, the connecting rod is heated by electromagnetic induction, and then the blade is heated by heat conduction. The heating method is simple, the blade is prevented from contacting the flame, and the operation safety is improved.

[0020] In a feasible embodiment, the power supply assembly comprises a switching power supply (not shown in the figure), the switching power supply is built-in with a high-frequency oscillation circuit, and the two ends of the coil are electrically connected to the switching power supply, so that the high-frequency alternating current passes through the coil through the switching power supply. Further, the frequency and current size of the output current can be adjusted by the switching power supply, so as to adjust the heating efficiency of the coil on the connecting rod. The outer rod of the hand tool is provided with a wiring channel through which the power supply wire passes, and the wiring channel is connected to the electric wire to externally connect the switching power supply,

[0021] In other embodiments, the heating assembly can also be an electric heating wire and a power supply, the electric heating wire is built-in in the tool head part, and the electric heating wire is powered to generate heat, so as to heat the tool head part.

[0022] In the embodiment of the application, the inner rod is made of ceramic heat insulation material, and is used as a connecting and mounting base of the coil and the connecting rod. The ceramic has good heat resistance and can well bear the connecting rod and the coil. The outer rod is made of insulating material, such as wood material, PC material, ceramic material and the like. The good insulation performance of the outer rod can eliminate the risk of electric shock.

[0023] Further, a non-slip rubber sleeve can be further arranged on the outer rod, which is used for improving the friction force when the worker holds the outer rod, so as to facilitate more accurate operation of the hand tool. In other embodiments, anti-slip lines can also be processed on the outer wall of the outer rod to achieve the same anti-slip effect.

[0024] The blade can be detachably connected with the connecting rod, and different shapes of the blade head part and the blade rod part are connected according to specific conditions to facilitate the processing operation. Specifically, one end of the connecting rod extends out of the inner rod, and a threaded hole is formed at the end of the connecting rod extending out of the inner rod. The end of the blade close to the connecting rod is fixedly provided with a connecting head, and the connecting head is threadedly connected with the inner rod.

[0025] Further, in order to avoid the worker being scalded by the high-temperature blade head part during dismounting the blade head part, an infrared temperature sensor is installed on the outer rod in the embodiment of the application, which is used for detecting the temperature of the connecting rod. The end of the blade rod part away from the blade head part is provided with a display, and the infrared temperature sensor is electrically connected with the display. The display is used for displaying the temperature of the connecting rod. The worker can know whether the temperature of the connecting rod and the blade is below the touchable temperature by observing the temperature of the display, so as to avoid being scalded when dismounting the blade.

[0026] In order to accelerate the cooling of the blade, a ventilation gap is left between the inner rod and the outer rod, and heat dissipation holes are formed on the inner rod to communicate the inside and outside of the inner rod, so as to communicate the connecting rod with the ventilation gap. Ventilation holes are formed at both ends of the outer rod to make the ventilation gap communicate with the outside. A fan is arranged in the outer rod, and the fan is started to make the air in the ventilation gap flow, so as to improve the heat dissipation and cooling efficiency of the connecting rod and the blade. Specifically, the fan includes a fan blade and a motor. The fan blade is coaxially and rotatably arranged in the outer rod, and the motor is fixed to the outside of the outer rod. The output shaft of the motor extends into the outer rod and is meshed and driven with the fan blade through bevel gears, so as to realize the installation of the motor and the ventilation of the ventilation gap.

[0027] Those skilled in the art will appreciate that although the preferred embodiments of the present application have been described, once the basic inventive concept is known, those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these changes and modifications.

Claims

1. A hand tool for wax pattern processing having a heating function, characterized by: The utility model provides a cutting tool, including knife bar part and cutter head part, the heating assembly for the cutter head part is equipped in the knife bar part and is used for heating, the knife bar part includes inner rod (11) and outer rod (12), and the heating assembly includes coil (3) and power supply assembly, the cutter head part includes blade (21) and connecting rod (22), the blade (21) and connecting rod (22) are connected, the connecting rod (22) is connected with inner rod (11) and extends into coil (3), and the connecting rod (22) is heated in midair by high-frequency current through coil (3), and the outer rod (12) is coaxially sleeved on the outside of inner rod (11).

2. The hand knife for wax pattern processing with a heating function according to claim 1, characterized in that, The power supply assembly includes switching power supply, the switching power supply is built-in high-frequency oscillation circuit, both ends of coil (3) are electrically connected with switching power supply, and the blade (21) and connecting rod (22) are made of copper.

3. The hand knife for wax pattern processing with a heating function according to claim 2, characterized in that, The inner rod (11) adopts ceramic heat insulation material, and the outer rod (12) adopts insulating material.

4. The hand knife for wax pattern processing with a heating function according to claim 1, characterized in that, The blade (21) and connecting rod (22) are detachably connected, one end of the connecting rod (22) extends out of the inner rod (11), a threaded hole is formed in the end of the connecting rod (22) extending out of the inner rod (11), a connector (23) is fixedly arranged on one end of the blade (21) close to the connecting rod (22), and the connector (23) is threadedly connected with the inner rod (11).

5. The hand knife for wax pattern processing with a heating function according to claim 4, characterized in that, The outer rod (12) is provided with an anti-skid rubber sleeve (4).

6. The hand knife for wax pattern processing with a heating function according to claim 4, characterized in that, An infrared temperature sensor (5) for detecting the temperature of the connecting rod (22) is arranged on the outer rod (12), a display (41) is arranged at one end of the knife bar part away from the cutter head part, the infrared temperature sensor (5) is electrically connected with the display (41), and the display (41) is used for displaying the temperature of the connecting rod (22).

7. The hand knife for wax pattern processing with a heating function according to claim 4, characterized in that, A ventilation gap (13) is arranged between the inner rod (11) and the outer rod (12), heat dissipation holes (111) are formed in the inner rod (11) to communicate the inside and outside of the inner rod (11), ventilation holes (121) are formed at both ends of the outer rod (12), and a fan (6) is arranged in the outer rod (12).

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