Novel juicer cutting edge machining process

Abstract

The invention relates to the technical field of cutting edge machining, and discloses a new juicer cutting edge machining technology which comprises a cutting edge, a base and a material plate. The cutting edge comprises a cutting arm, a material pushing arm and a central shaft, the cutting arm and the material pushing arm extend outwards, and the included angle between the cutting arm and the central shaft is 45 + / -10 degrees; a cutting edge limiting groove and a riveting groove are formed in the central shaft; the base is provided with a base limiting column matched with the cutting edge limiting groove and a riveting column matched with the riveting groove. According to the method, a punch forming process is adopted to replace traditional hardware die-casting integrated forming, the die cost is reduced by 60%, meanwhile, the material utilization rate is increased to 70% from 45% of a traditional process, material waste is reduced, secondary machining steps such as CNC fine trimming needed by die-casting of the cutting edge are omitted, and the cost of a single piece is reduced by 30%-40%; meanwhile, the riveting connection technology replaces the welding technology, the secondary surface treatment procedure after welding is omitted, and the manufacturing cost is further reduced.

Description

Technical Field

[0001] This invention relates to the field of cutting edge processing technology, and in particular to a new cutting edge processing technology for juicers. Background Technology

[0002] In the field of food processing machinery technology, the juicer, as a common food juicing equipment, has its core component, the screw cutting edge, whose machining and connection process directly affects the equipment's performance, cost, and service life. Currently, the machining of the juicer screw cutting edge generally adopts a one-piece die-casting molding process, which enables the cutting edge to be integrally formed with the machine body.

[0003] Traditional cutting edge machining processes have significant technical limitations. On the one hand, die casting requires extremely high mold precision, necessitating the use of precision molds, which leads to high mold costs. Furthermore, die casting is prone to defects such as burrs and porosity, resulting in low product yield (defect rate typically >15%). Simultaneously, die-cast cutting edges have insufficient edge strength (hardness generally <80HB) and high surface roughness (Ra≥3.2μm), requiring secondary machining processes such as CNC finishing to improve precision and surface quality, increasing unit manufacturing costs by 30%–40%. On the other hand, in the connection between the cutting edge and the base, existing technologies mostly use welding. Welding not only has high process requirements and is prone to unstable connection strength due to welding quality issues, but also requires secondary surface treatment after welding to remove welding marks and oxide layers, further increasing process costs. Moreover, the welded structure is a non-removable connection, requiring complete component replacement for subsequent repairs, resulting in high maintenance costs. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a new processing technology for the cutting edge of a juicer, which aims to improve the existing die-casting process, which suffers from high mold costs, low material utilization, increased unit costs due to the need for secondary processing, and increased process costs due to the need for secondary surface treatment for welding connections.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel processing technology for the cutting edge of a juicer, comprising a cutting edge, a base, and a material plate; the cutting edge includes a cutting arm, a pushing arm, and a central shaft, wherein the cutting arm and the pushing arm extend outward, and the angle between the cutting arm and the central shaft is 45°±10°; the central shaft is provided with a cutting edge limiting groove and a riveting groove; the base is provided with a base limiting post that cooperates with the cutting edge limiting groove, and a riveting post that cooperates with the riveting groove, wherein the riveting post is bent and fixed in the riveting groove to achieve the connection between the cutting edge and the base; the material plate is provided with a discharge port.

[0006] Furthermore, the cutting arm is provided with cutting ribs, and the blade shape curve of the cutting ribs is optimized by finite element analysis so that the angle between the direction of the cutting resultant force and the direction of the food fiber is ≤15°.

[0007] Furthermore, the front section of the pusher arm is extended with a pusher rib, and the gap between the bottom of the pusher rib and the material plate is 5mm±1mm.

[0008] Furthermore, the pusher arm is provided with a reverse cutting rib.

[0009] Furthermore, the cutting edge of any one of claims 1-4 is processed by stamping forming process, and the connection between the cutting edge and the base is achieved by bending and riveting the riveting post on the base and the riveting groove on the cutting edge, which replaces the traditional die casting integral forming and welding connection process.

[0010] The present invention has the following beneficial effects:

[0011] 1. In this invention, stamping forming process is used to replace traditional die casting one-piece molding of hardware, reducing mold cost by 60%, while increasing material utilization rate from 45% to 70% of the traditional process, reducing material waste, and eliminating secondary processing steps such as CNC precision finishing required for die casting cutting edges, reducing unit cost by 30% to 40%; at the same time, riveting connection process replaces welding process, eliminating secondary surface treatment process after welding, further reducing process cost.

[0012] 2. In this invention, by designing an angle of 45±10° between the cutting arm and the central axis, and by optimizing the blade curve of the cutting rib through finite element analysis, pre-tearing of food is achieved, significantly reducing cutting resistance. The measured motor load power is reduced by 40%, and the operating current is reduced by 1.2A to 1.5A, solving the problem of severe motor overheating in traditional processes. The gap between the bottom of the pusher rib and the material plate is controlled at 5mm±1mm, effectively reducing the residue of small food pieces and improving the overall operating efficiency of the machine.

[0013] 3. In this invention, the stamping process avoids defects such as burrs and porosity found in the die-casting process, thus improving the structural stability of the cutting edge; at the same time, it improves the surface roughness of the cutting edge and reduces frictional loss. After life fatigue testing, the average lifespan of the entire machine is extended to over 500 hours, solving the problem of traditional equipment having an average lifespan of <800 hours.

[0014] 4. In this invention, a detachable connection structure of riveting post and riveting groove is adopted. When the cutting edge is damaged, it can be separated and replaced separately without replacing the whole part. The maintenance cost is reduced by 50%, and the maintenance convenience is greatly improved compared with the traditional welding structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a novel juicer cutting edge machining process proposed in this invention;

[0016] Figure 2 This is a schematic cross-sectional view of the material plate for a novel cutting edge machining process for a juicer proposed in this invention.

[0017] Figure 3 This is a schematic cross-sectional view of the base for a novel juicer cutting edge machining process proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the cutting edge structure for a novel juicer cutting edge machining process proposed in this invention.

[0019] Figure 5 This is a schematic diagram of the cutting arm structure for a novel juicer cutting edge machining process proposed in this invention.

[0020] Figure 6 This is a schematic diagram of the riveting post structure for a novel juicer cutting edge machining process proposed in this invention;

[0021] Figure 7 This is a schematic diagram of the feed inlet structure for a novel juicer cutting edge machining process proposed in this invention.

[0022] Legend:

[0023] 1. Cutting edge; 11. Cutting arm; 111. Cutting rib; 12. Pusher arm; 121. Pusher rib; 122. Reverse cutting rib; 13. Central shaft; 131. Cutting edge limiting groove; 132. Riveting groove; 2. Base; 21. Riveting post; 22. Base limiting post; 3. Material plate; 31. Discharge port. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Reference Figure 1 - Figure 7The present invention provides an embodiment of a novel juicer cutting edge processing and connection structure, comprising a cutting edge 1, a base 2, and a material plate 3; the cutting edge 1 includes a cutting arm 11, a pushing arm 12, and a central shaft 13, the cutting arm 11 and the pushing arm 12 extending outward, the included angle between the cutting arm 11 and the central shaft 13 being 45°±10°; the central shaft 13 is provided with a cutting edge limiting groove 131 and a riveting groove 132; the base 2 is provided with a base limiting post 22 cooperating with the cutting edge limiting groove 131, and a riveting post 21 cooperating with the riveting groove 132, the riveting post 21 being bent and fixed in the riveting groove 132 to achieve the connection between the cutting edge 1 and the base 2; the material plate 3 is provided with a discharge port 31;

[0026] Specifically, in terms of cutting and crushing, the design of the cutting edge 1 is particularly crucial. The angle between the cutting arm 11 and the central shaft 13 is set at 45°±10°. This angle design allows long-diameter ingredients to be efficiently divided into blocks with a height of about 40mm during the initial cutting, laying a good foundation for subsequent crushing. In order to further improve cutting efficiency, the cutting rib 111 specially designed on the cutting arm 11 has been optimized by finite element analysis, and the blade curve has been finely adjusted to ensure that the angle between the direction of the cutting force and the direction of the ingredient fibers does not exceed 15°. This design achieves the pre-tear effect of the ingredients, significantly reduces the resistance during the cutting process, and thus reduces the load on the motor.

[0027] During the material pushing and secondary crushing stage, the gap between the bottom of the pushing rib 121 at the front of the pushing arm 12 and the material plate 3 is strictly controlled within the range of 5mm±1mm. This precise gap design not only effectively reduces food residue but also significantly improves the material conveying efficiency. The cooperation between the pushing rib 121 and the discharge port 31 is also ingenious. Through secondary extrusion and crushing of the food, the crushing effect is further improved. In addition, the pushing arm 12 is also equipped with a reverse cutting rib 122, which is specifically used to assist in processing food flowing in the opposite direction, thereby further enhancing the crushing effect.

[0028] In terms of structural connection and assembly, the central shaft 13 of the cutting edge 1 is provided with a cutting edge limiting groove 131, which cooperates with the base limiting post 22 of the base 2 to achieve precise positioning of the cutting edge and ensure the stability and reliability of the entire cutting system. The riveting post 21 of the base 2 and the riveting groove 132 of the central shaft 13 of the cutting edge 1 are bent and fixed by a high-speed riveting device. This process replaces the traditional welding process, which not only saves the tedious steps of secondary surface treatment, but also makes it more convenient to replace the cutting edge 1 individually.

[0029] This cutting and crushing equipment also boasts advantages such as low energy consumption and long service life. This is mainly due to the optimized design of the cutting structure, which effectively reduces frictional resistance. Actual testing shows that the motor load power has decreased by 40% and the operating current has decreased by 1.2A to 1.5A. This not only reduces the heat generated by the motor but also improves the overall energy efficiency of the equipment. In addition, the improved cutting edge strength and surface finish, combined with the stamping process, extend the average life of the cutting edge to over 500 hours after rigorous fatigue testing, fully demonstrating its outstanding performance in durability and reliability.

[0030] Working principle: In terms of cutting and crushing, the cutting arm 11 of the cutting blade 1 forms an angle of 45°±10° with the central axis 13, which can initially cut long-diameter food into blocks with a height of about 40mm. The cutting ribs 111 on the cutting arm 11 have their blade shape curves optimized by finite element analysis, so that the angle between the direction of the cutting force and the direction of the food fibers is ≤15°, realizing the pre-tear of the food, reducing cutting resistance and motor load. During material pushing and secondary crushing, the gap between the bottom of the pushing rib 121 at the front of the pushing arm 12 and the material plate 3 is controlled at 5mm±1mm, reducing food residue and improving conveying efficiency. The pushing rib 121 works with the discharge port 31 to perform secondary extrusion crushing of the food. The reverse cutting rib 122 on the pushing arm 12 assists in handling the reverse crushing. To enhance the pulverizing effect on flowing ingredients, in the structural connection and assembly, the cutting edge limiting groove 131 of the central shaft 13 of the cutting edge 1 cooperates with the base limiting post 22 of the base 2 to achieve precise positioning. The riveting post 21 of the base 2 and the riveting groove 132 of the central shaft 13 of the cutting edge 1 are bent and fixed by high-speed riveting equipment, replacing the welding process, eliminating the need for secondary surface treatment and facilitating the individual replacement of the cutting edge 1. The low energy consumption and long life are due to the optimization of the cutting structure to reduce frictional resistance. The measured motor load power is reduced by 40% and the working current is reduced by 1.2A to 1.5A, reducing motor heat generation. Combined with the improved edge strength and surface finish of stamping, the average life is extended to more than 500 hours after life fatigue testing.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel processing technology for the cutting edge of a juicer, characterized in that, The device includes a cutting edge (1), a base (2), and a material plate (3); the cutting edge (1) includes a cutting arm (11), a pusher arm (12), and a central shaft (13), the cutting arm (11) and the pusher arm (12) extend outward, and the angle between the cutting arm (11) and the central shaft (13) is 45°±10°; the central shaft (13) is provided with a cutting edge limiting groove (131) and a riveting groove (132); the base (2) is provided with a base limiting post (22) that cooperates with the cutting edge limiting groove (131) and a riveting post (21) that cooperates with the riveting groove (132), and the riveting post (21) is bent and fixed in the riveting groove (132) to realize the connection between the cutting edge (1) and the base (2); the material plate (3) is provided with a discharge port (31).

2. The new juicer cutting edge machining process according to claim 1, characterized in that: The cutting arm (11) is provided with a cutting rib (111). The blade shape curve of the cutting rib (111) is optimized by finite element analysis so that the angle between the direction of the cutting resultant force and the direction of the food fiber is ≤15°.

3. The new juicer cutting edge machining process according to claim 1, characterized in that: The front section of the pusher arm (12) is extended with a pusher rib (121), and the gap between the bottom of the pusher rib (121) and the material plate (3) is 5mm ± 1mm.

4. The new juicer cutting edge machining process according to claim 1, characterized in that: The pusher arm (12) is provided with a reverse cutting rib (122).

5. The new juicer cutting edge machining process according to claim 1, characterized in that, The cutting edge (1) of any one of claims 1-4 is processed by stamping forming process. The connection between the cutting edge (1) and the base (2) is achieved by bending and riveting the riveting post (21) on the base (2) and the riveting groove (132) on the cutting edge (1), which replaces the traditional die casting integral forming and welding connection process.

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