A pick brazing device

Abstract

The utility model discloses a kind of pick brazing welding devices, comprising: conveying mechanism;Rotary clamp, the rotary clamp quantity is several, the rotary clamp rotatable be set on the conveying mechanism, the conveying mechanism drives the rotary clamp moves to feeding and discharging station, welding station and quenching station, the side wall of the rotary clamp is provided with several cooling through holes;Welding mechanism, the welding mechanism at least includes induction coil, the induction coil is located at welding station, the position of the induction coil corresponds with the position of the rotary clamp, and the welding mechanism is used to weld the pick to be processed.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a brazing welding device for cutting teeth. Background Technology

[0002] Cutting teeth are key components of mining and tunneling machinery, primarily used in coal mining and tunneling operations. They are categorized by application into coal mining machine cutting teeth and tunneling machine cutting teeth, with the latter requiring higher hardness and impact resistance. Cutting teeth work in conjunction with cutting tooth sleeves and cutting tooth seats; these three components utilize alloy steel and carbide heads to enhance wear resistance, and structural optimization improves stress distribution.

[0003] Cutting teeth are typically welded from a tooth body to a carbide tip, and can be divided into two types: pick-shaped (conical) and blade-shaped (flat). In existing cutting teeth, the tooth tip and tooth disc, and the tooth disc and tooth shank are brazed simultaneously during the brazing process. This method involves brazing the tooth tip and tooth disc, and the tooth disc and tooth shank together, followed by quenching. In this case, the overall hardness and toughness after brazing are not ideal, and the overall process is also relatively complex, requiring two steps: first brazing, then quenching.

[0004] Although the brazing process is simplified after adopting the tempering process, only the tooth head and tooth shank need to be brazed. Since the tooth shank and tooth shank have been pre-tempered, when the tooth head and tooth shank are brazed again, the pre-tempered brazed part (i.e. the connection between the tooth shank and tooth shank) is prone to melting due to temperature. Even if it is cooled in the subsequent quenching process, the melting has already occurred, which may result in cracks that are not visible to the naked eye, affecting subsequent use and making it impossible to guarantee the quality. Utility Model Content

[0005] This invention provides a brazing device for cutting teeth, which can improve product quality.

[0006] To solve the above-mentioned technical problems, this utility model provides a brazing welding device for cutting teeth, characterized in that it includes:

[0007] Conveying mechanism;

[0008] A rotary fixture, wherein there are several rotary fixtures, and the rotary fixtures are rotatably mounted on the conveying mechanism. The conveying mechanism drives the rotary fixtures to move to the loading and unloading station, the welding station and the quenching station. Several cooling through holes are provided on the side wall of the rotary fixture.

[0009] A welding mechanism, comprising at least an induction coil located at a welding station, the position of which corresponds to the position of the rotating fixture, the welding mechanism being used to weld the cutting teeth to be processed.

[0010] As a preferred embodiment of the above technical solution, the induction coil includes at least a plurality of strip portions and a plurality of U-shaped connecting portions, the plurality of strip portions and the plurality of U-shaped connecting portions forming the induction coil, the strip portions being arranged along the conveying direction of the conveying mechanism, the plurality of strip portions being distributed on both sides of the rotating clamp, and the strip portions distributed on both sides of the rotating clamp being connected by the U-shaped connecting portions.

[0011] As a preferred embodiment of the above technical solution, the length of the strip portion is greater than the length required for the rotating fixture to rotate once during the conveying process at the welding station.

[0012] As a preferred embodiment of the above technical solution, the length of the strip portion is greater than the sum of the diameters of the plurality of rotating clamps.

[0013] As a preferred embodiment of the above technical solution, the induction coil has two turns.

[0014] As a preferred embodiment of the above technical solution, the strip-shaped portion located on the same side of the rotating clamp is distributed along the length direction of the rotating clamp.

[0015] As a preferred embodiment of the above technical solution, several of the U-shaped connecting portions are arranged along the conveying direction of the conveying mechanism.

[0016] As a preferred embodiment of the above technical solution, the welding mechanism further includes a connector and two connecting rods, one end of the connecting rod is connected to the strip portion, and the other end of the connecting rod is connected to the connector, wherein the connector is provided with a connecting portion.

[0017] As a preferred embodiment of the above technical solution, the conveying mechanism includes a conveying motor, a conveying chain, and several conveying plates. The conveying motor is connected to the conveying chain for transmission. The several conveying plates are evenly arranged on the conveying chain. The rotating clamp is rotatably mounted on the conveying plate.

[0018] This utility model provides a brazing device for cutting teeth, including: a conveying mechanism, a rotating fixture, and a welding mechanism. The conveying mechanism drives the rotating fixture to move sequentially to the loading / unloading station, the welding station, and the quenching station, thereby achieving continuous production and improving production efficiency. The rotating fixture has a receiving space for accommodating and fixing the cutting teeth to be processed. Several cooling through holes are provided on the side wall of the rotating fixture for the flow of coolant to cool the tooth shank of the cutting teeth, preventing overheating and melting of the brazing part (i.e., the connection between the tooth disc and the tooth shank), thus ensuring the product quality of the cutting teeth. The welding mechanism is a medium-frequency induction welding mechanism. During welding, the operator places and fixes the cutting teeth to be processed in the rotating fixture, and starts the conveying mechanism to move the rotating fixture to the welding station in sequence. At this time, the induction coil of the medium frequency induction welding mechanism is energized to generate an alternating magnetic field. Under the action of the alternating magnetic field, eddy currents are generated inside the cutting teeth to be processed placed in the coil, causing them to heat up. This allows the welding part of the cutting teeth to reach the brazing temperature. At this time, the rotating fixture drives the cutting teeth to rotate slowly, so that the welding part is heated evenly, ensuring the welding quality. After welding is completed, the conveying mechanism continues to run, transporting the rotating fixture and the cutting teeth inside to the quenching station for cooling treatment, further improving the welding strength and material hardness.

[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a brazing device for cutting teeth according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 This is a three-dimensional structural diagram of the welding mechanism of a cutting tooth brazing welding device according to an embodiment of the present utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the conveying mechanism of a cutting tooth brazing welding device according to an embodiment of the present utility model;

[0024] In the diagram: 1. Conveying mechanism; 2. Rotary clamp; 3. Welding mechanism; 101. Conveying motor; 102. Conveying chain; 103. Conveying plate; 201. Cooling through hole; 301. Induction coil; 302. Strip section; 303. U-shaped connecting section; 304. Connecting piece; 305. Connecting rod; 306. Connecting part. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See Figures 1 to 4 This utility model provides a brazing device for cutting teeth, characterized in that it includes:

[0027] Conveying mechanism 1;

[0028] Rotary clamp 2, there are several of the rotary clamps 2, the rotary clamps 2 are rotatably mounted on the conveying mechanism 1, the conveying mechanism 1 drives the rotary clamps 2 to move to the loading and unloading station, the welding station and the quenching station, and the rotary clamps 2 are provided with several cooling through holes 201 on the side wall;

[0029] The welding mechanism 3 includes at least an induction coil 301, which is located at the welding station and corresponds to the position of the rotating fixture 2. The welding mechanism 3 is used to weld the cutting teeth to be processed.

[0030] This utility model provides a brazing device for cutting teeth, including: a conveying mechanism 1, a rotating clamp 2, and a welding mechanism 3. The conveying mechanism 1 drives the rotating clamp 2 to move sequentially to the loading / unloading station, the welding station, and the quenching station, thereby achieving continuous production and improving production efficiency. The rotating clamp 2 has a receiving space for accommodating and fixing the cutting teeth to be processed. The side wall of the rotating clamp 2 is provided with several cooling through holes 201 for circulating coolant to cool the tooth shank of the cutting teeth, preventing overheating and melting of the brazing part (i.e., the connection between the tooth disc and the tooth shank), thereby ensuring the product quality of the cutting teeth. The welding mechanism 3 is a medium-frequency induction welding machine. In structure 3, during welding, the operator places the cutting tooth to be processed in the rotating fixture 2 and fixes it. The conveying mechanism 1 is started, so that the rotating fixture 2 moves sequentially to the welding station. At this time, the induction coil 301 of the medium frequency induction welding mechanism 3 is energized to generate an alternating magnetic field. Under the action of the alternating magnetic field, eddy currents are generated inside the cutting tooth to be processed placed in the coil, and the tooth heats up itself, so that the welding part of the cutting tooth reaches the brazing temperature. At this time, the rotating fixture 2 drives the cutting tooth to rotate slowly, so that the welding part is heated evenly and the welding quality is ensured. After the welding is completed, the conveying mechanism 1 continues to run, conveying the rotating fixture 2 and the cutting tooth inside it to the quenching station for cooling treatment, further improving the welding strength and material hardness.

[0031] In a further embodiment of this invention, the induction coil 301 includes at least a plurality of strip portions 302 and a plurality of U-shaped connecting portions 303. The plurality of strip portions 302 and the plurality of U-shaped connecting portions 303 constitute the induction coil 301. The strip portions 302 are arranged along the conveying direction of the conveying mechanism 1. The plurality of strip portions 302 are distributed on both sides of the rotating clamp 2. The strip portions 302 distributed on both sides of the rotating clamp 2 are connected by the U-shaped connecting portions 303.

[0032] In this embodiment, a plurality of the strip-shaped portions 302 and a plurality of the U-shaped connecting portions 303 constitute the induction coil 301. The strip-shaped portions 302 are arranged along the conveying direction of the conveying mechanism 1 and distributed on both sides of the rotating fixture 2. The strip-shaped portions 302 on both sides are connected by the U-shaped connecting portions 303 to form a complete induction coil 301 structure. The position of the strip-shaped portions 302 corresponds to the position of the cutting teeth to be processed in the rotating fixture 2, ensuring that the alternating magnetic field can uniformly cover the welding area during the welding process, thereby improving heating efficiency and welding quality. The U-shaped connecting portions 303 are designed to bypass the top of the rotating fixture 2 to avoid interference with the cutting teeth to be processed during welding, while ensuring the overall structural strength of the induction coil 301.

[0033] In a further embodiment of this invention, the length of the strip portion 302 is greater than the length required for the rotating fixture 2 to rotate once during transport at the welding station.

[0034] In this embodiment, the length of the strip portion 302 is greater than the length required for the rotating fixture 2 to rotate once when transported at the welding station. This ensures that during the welding process, the cutting teeth to be processed complete at least one rotation within the effective heating range of the induction coil 301, thereby ensuring that the welding part is heated evenly and avoiding welding defects caused by uneven heating.

[0035] In a further embodiment of this invention, the length of the strip portion 302 is greater than the sum of the diameters of the plurality of rotating clamps 2.

[0036] In this embodiment, the length of the strip portion 302 is greater than the sum of the diameters of the plurality of rotating fixtures 2, enabling multiple rotating fixtures 2 to perform heating treatment simultaneously within the same coil area, thereby improving processing efficiency and equipment utilization. Simultaneously, the longer strip portion 302 design effectively reduces the edge effect of the electromagnetic field, resulting in a more uniform magnetic field distribution, further enhancing the heating effect and stability of the welding area, and ensuring the consistency and reliability of the cutting tooth welding quality.

[0037] In a further embodiment of this example, the induction coil 301 has two turns.

[0038] In this embodiment, the induction coil 301 has two turns, which can improve the magnetic field strength and energy density, enabling the welding area of ​​the cutting tooth to reach the required temperature in a short time, thereby improving welding efficiency and quality.

[0039] In a further embodiment of this invention, the strip portion 302 located on the same side of the rotating clamp 2 is distributed along the length direction of the rotating clamp 2.

[0040] In this embodiment, the strip-shaped portion 302 located on the same side of the rotating fixture 2 is evenly distributed along the length direction of the rotating fixture 2. Specifically, the strip-shaped portion 302 located on the same side of the rotating fixture 2 is distributed vertically, so as to better cover the welding area of ​​the cutting teeth to be processed on the rotating fixture 2, ensure uniform magnetic field distribution, and improve heating efficiency.

[0041] In a further embodiment of this invention, several of the U-shaped connecting portions 303 are arranged along the conveying direction of the conveying mechanism 1.

[0042] In this embodiment, several U-shaped connecting parts 303 are arranged along the conveying direction of the conveying mechanism 1, so that the distance between the several U-shaped connecting parts 303 and the top of the rotating fixture 2 in the height direction is consistent, thereby ensuring that each rotating fixture 2 can smoothly avoid interference during the conveying process and improve the stability of the overall welding process.

[0043] In a further embodiment of this invention, the welding mechanism 3 further includes a connector 304 and two connecting rods 305. One end of the connecting rod 305 is connected to the strip portion 302, and the other end of the connecting rod 305 is connected to the connector 304. The connector 304 is provided with a connecting portion 306.

[0044] In this embodiment, the welding mechanism 3 further includes a connector 304 and two connecting rods 305. The induction coil 301 is fixed to an external device via the connector 304. The connecting portion 306 is a connecting hole. The connector 304 is fixed to the external device by bolts or other fasteners. The connecting rods 305 are used to support and fix the position of the induction coil 301, ensuring the overall structure of the induction coil 301 is stable and reliable. Additionally, the connecting rods 305 are made of a conductive material, capable of supplying power to the induction coil 301.

[0045] This ensures stable current transmission in the induction coil 301 during operation, thereby improving heating efficiency and safety.

[0046] In a further embodiment of this invention, the conveying mechanism 1 includes a conveying motor 101, a conveying chain 102, and a plurality of conveying plates 103. The conveying motor 101 is connected to the conveying chain 102 in a transmission manner. The plurality of conveying plates 103 are evenly arranged on the conveying chain 102. The rotating clamp 2 is rotatably arranged on the conveying plates 103.

[0047] In this embodiment, the conveying mechanism 1 includes a conveying motor 101, a conveying chain 102, and several conveying plates 103. The conveying motor 101 drives the conveying chain 102 to operate, causing each conveying plate 103 to move along a predetermined trajectory, thereby realizing continuous conveying of the rotary fixture 2 between different workstations. The rotary fixture 2 is rotatably mounted on the conveying plate 103. The conveying plate 103 can provide stable support for the rotary fixture 2 and maintain the fixed posture of the fixture during its movement, preventing displacement or loosening caused by vibration or external force, thereby ensuring the stability and accuracy of the welding and quenching process.

[0048] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A brazing device for cutting teeth, characterized in that, include: Conveying mechanism; A rotary fixture, wherein there are several rotary fixtures, and the rotary fixtures are rotatably mounted on the conveying mechanism. The conveying mechanism drives the rotary fixtures to move to the loading and unloading station, the welding station and the quenching station. Several cooling through holes are provided on the side wall of the rotary fixture. A welding mechanism, comprising at least an induction coil located at a welding station, the position of which corresponds to the position of the rotating fixture, the welding mechanism being used to weld the cutting teeth to be processed.

2. The brazing and welding apparatus for cutting teeth according to claim 1, characterized in that, The induction coil includes at least a number of strip-shaped portions and a number of U-shaped connecting portions. The number of strip-shaped portions and the number of U-shaped connecting portions constitute the induction coil. The strip-shaped portions are arranged along the conveying direction of the conveying mechanism. The number of strip-shaped portions are distributed on both sides of the rotating clamp. The strip-shaped portions distributed on both sides of the rotating clamp are connected by the U-shaped connecting portions.

3. The brazing and welding apparatus for cutting teeth according to claim 2, characterized in that, The length of the strip is greater than the length required for the rotating fixture to rotate once during transport at the welding station.

4. The brazing and welding apparatus for cutting teeth according to claim 2, characterized in that, The length of the strip portion is greater than the sum of the diameters of the plurality of the rotating clamps.

5. The brazing and welding apparatus for cutting teeth according to claim 2, characterized in that, The induction coil has two turns.

6. The brazing and welding apparatus for cutting teeth according to claim 5, characterized in that, The strip-shaped portions located on the same side of the rotating clamp are distributed along the length direction of the rotating clamp.

7. The brazing and welding apparatus for cutting teeth according to claim 5, characterized in that, Several of the U-shaped connecting parts are arranged along the conveying direction of the conveying mechanism.

8. The brazing and welding apparatus for cutting teeth according to claim 2, characterized in that, The welding mechanism further includes a connector and two connecting rods. One end of the connecting rod is connected to the strip-shaped part, and the other end of the connecting rod is connected to the connector. The connector is provided with a connecting part.

9. The brazing and welding apparatus for cutting teeth according to claim 1, characterized in that, The conveying mechanism includes a conveying motor, a conveying chain, and several conveying plates. The conveying motor is connected to the conveying chain for transmission. Several conveying plates are evenly arranged on the conveying chain. The rotating clamp is rotatably mounted on the conveying plate.

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