Combined screw for juicer

Abstract

The utility model discloses a combined screw for a juicer. Belongs to the technical field of juicers. According to the technical key points, the cutter comprises a first extrusion cutting part and a second extrusion cutting part which are matched with each other, and the first extrusion cutting part and the second extrusion cutting part are assembled into a whole through a fastening structure; a transmission shaft linked with an external driving part is axially arranged on the first extrusion cutting part or the second extrusion cutting part, and the transmission shaft is embedded into the first extrusion cutting part or the second extrusion cutting part to form a whole; the combined screw for the juicer is compact in structure, convenient to assemble and good in using effect. The device is used for juicers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screw rod, more specifically, relates to a combined screw rod for a juice extractor. BACKGROUND

[0002] The juice extractor is developed on the basis of the conventional juice extractor, and the main working purpose of the juice extractor is to change fruits into juice to improve taste and facilitate drinking. However, the juice extractor has a qualitative leap compared with the traditional cup-type blender and the juice extractor. The low-speed spiral extrusion technology of the juice extractor slowly extrudes juice from the fruits like squeezing a towel, does not damage the fruit cell structure, and preserves the fruit nutrition. Moreover, the low-speed juice extraction does not generate high heat, and avoids the problem of juice oxidation caused by heat.

[0003] The core components of the traditional juice extractor are a screw rod assembly and a filter screen assembly that cooperate with each other. In the screw rod assembly, the screw rod is a core component. In order to pursue a compact structure or consider the volume, the existing screw rod is generally short, and the extrusion ribs in a spiral shape on the outer wall of the screw rod are in a one-piece structure. In order to improve the juicing effect, two-piece screw rods have appeared on the market.

[0004] However, it is found in the actual research and development process that if the two-piece screw rod is integrally formed, the semi-finished product taken out of one mold needs to be put into a second mold for secondary injection molding. This not only is complicated to operate, but also increases the defective product rate, and makes the structure of the second mold more complex and the production cost higher. If a split structure is adopted, the screw rod and one of the extrusion juicing parts need to be fixed first, and then the other extrusion juicing part is assembled. This causes the assembly steps to be complicated and affects the assembly efficiency. TECHNICAL SOLUTION

[0005] The utility model aims at the deficiencies of the prior art, and provides a combined screw rod for a juice extractor, which has a compact structure, is convenient to assemble, and has good use effect.

[0006] The technical scheme of the utility model is implemented as follows: a combined screw rod for a juice extractor includes a first extrusion cutting part and a second extrusion cutting part that cooperate with each other, the first extrusion cutting part and the second extrusion cutting part are assembled into an integral whole through a fastening structure, a transmission shaft that is linked with an external driving part is arranged on the first extrusion cutting part or the second extrusion cutting part in the axial direction, and the transmission shaft is embedded in the first extrusion cutting part or the second extrusion cutting part to form an integral whole.

[0007] In the combined screw rod for a juice extractor, the fastening structure includes a limiting recess and a limiting protrusion that are arranged on the first extrusion cutting part and the second extrusion cutting part respectively and cooperate with each other.

[0008] The fastening structure further comprises an inner threaded hole arranged on the bottom surface of the first extrusion cutting part in the axial direction, a connecting hole corresponding to the inner threaded hole is arranged on the second extrusion cutting part, and a fastening screw is threadedly connected with the inner threaded hole through the connecting hole.

[0009] The driving shaft is embedded in the first extrusion cutting part in the combination screw for a juicer.

[0010] The first extrusion cutting part comprises a first base, a first rib in a spiral shape is integrally formed on the outer wall of the first base in the circumferential direction, a pre-crushing cutter head extending upwards in a spiral manner is integrally formed on the upper end of the first base, and an auxiliary cutting edge is integrally formed on the outer side surface of the pre-crushing cutter head along a spiral track.

[0011] The second extrusion cutting part comprises a second base, a second rib in a spiral shape is integrally formed on the outer wall of the second base in the circumferential direction, the maximum outer diameter of the second rib is R1, the maximum outer diameter of the auxiliary cutting edge is R2, and R2≥R1.

[0012] The number of the second ribs is equal to or greater than the number of the first ribs.

[0013] The first extrusion cutting part and the second extrusion cutting part form a feeding gap therebetween, the material passing through the first extrusion cutting part is uniformly fed again in the feeding gap and then enters the second extrusion cutting part, and the height H of the feeding gap is 1-15 mm.

[0014] After the above structure is adopted, the driving shaft and one of the extrusion cutting parts are integrally formed by injection molding, the driving shaft is embedded in one of the extrusion cutting parts, during assembly, only the assembly of the two extrusion cutting parts needs to be completed, the assembly process is saved, the stability of the whole screw is improved, and the problem of loosening between the driving shaft and the extrusion cutting part is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in detail in combination with the embodiments in the drawings, but does not constitute any limitation to the utility model.

[0016] Figure 1 It is the structure schematic diagram of the utility model;

[0017] Figure 2 It is the exploded structure schematic diagram of the utility model;

[0018] Figure 3 It is the cross section structure schematic diagram of the utility model.

[0019] Fig. 1, first extrusion cutting part; 1a, first base; 1b, first rib; 2, second extrusion cutting part; 2a, second base; 2b, second rib; 3, transmission shaft; 4, limiting recess; 5, limiting convex part; 6, internal thread hole; 7, pre-breaking tool bit; 7a, auxiliary cutting edge; 8, feeding gap. DETAILED DESCRIPTION

[0020] Referring to Figure 1 The utility model discloses a combined screw rod for a stockpot, which comprises a first extrusion cutting part 1 and a second extrusion cutting part 2 that cooperate with each other, wherein the first extrusion cutting part 1 and the second extrusion cutting part 2 are assembled into a whole through a fastening structure; a transmission shaft 3 that is linked with an external driving part is arranged on the first extrusion cutting part 1 or the second extrusion cutting part 2 in an axial direction, and the transmission shaft 3 is embedded in the first extrusion cutting part 1 or the second extrusion cutting part to form an integral whole. In this embodiment, the transmission shaft 3 is embedded in the first extrusion cutting part 1.

[0021] When the first extrusion cutting part is injection molded, the transmission shaft is prepositioned in an injection molding machine to form an integral whole with the first extrusion cutting part. In this way, when the first extrusion cutting part and the second extrusion cutting part are assembled into an integral whole in the subsequent assembly process, the assembly of the screw rod is completed, and the transmission shaft does not need to be additionally installed, so that the assembly process is convenient and fast, the transmission shaft is fixed into an integral whole with the first extrusion cutting part, and the possibility of loosening does not exist during use, thereby improving the service life.

[0022] Preferably, the fastening structure comprises a limiting recess 4 and a limiting convex part 5 that are arranged on the first extrusion cutting part 1 and the second extrusion cutting part 2, respectively, and cooperate with each other. In this embodiment, the limiting recess and the limiting convex part are arranged on the first extrusion cutting part 1 and the second extrusion cutting part 2, so that the first extrusion cutting part 1 and the second extrusion cutting part 2 can be more stably assembled. The shape and position of the limiting recess and the limiting convex part are easily thought of by those skilled in the art, and can be determined according to specific requirements. The limiting recess and the limiting convex part can be fixedly connected in various ways in the art. In this embodiment, the limiting recess and the limiting convex part are fixedly connected through screw connection. Specifically, the fastening structure further comprises an internal thread hole 6 that is arranged on the bottom surface of the first extrusion cutting part 1 in an axial direction, and a connecting hole that corresponds to the internal thread hole 6 is arranged on the second extrusion cutting part 2, and a fastening screw is threadedly connected with the internal thread hole 6 through the connecting hole. After the first extrusion cutting part 1 and the second extrusion cutting part 2 are assembled, the fastening screw is locked, and the assembly of the screw rod is completed, which is very convenient and fast.

[0023] Preferably, the first extrusion cutting part 1 comprises a first base 1a, and a first rib 1b in a spiral shape is integrally formed on the outer wall of the first base 1a in a circumferential direction. The shape and structure of the first rib can be various specifications in the art, which can be determined according to specific conditions.

[0024] The pre-breaking cutter head 7 is integrally formed on the upper end of the first base 1a and extends upward in a spiral manner, and an auxiliary cutting edge 7a is integrally formed on the outer side of the pre-breaking cutter head 7 along a spiral track. Through the cooperation of the pre-breaking cutter head and the auxiliary cutting edge, the large-diameter fruits and vegetables or the whole fruits and vegetables can be pre-broken and finely cut, facilitating subsequent juice extraction, and making the fruit and vegetable juice extraction more convenient.

[0025] Preferably, the second extrusion cutting part 2 comprises a second base 2a, and a second spiral rib 2b is integrally formed on the outer wall of the second base 2a and in a circumferential direction; the shape and structure of the second spiral rib can be various specifications in the art, depending on the specific circumstances.

[0026] The maximum outer diameter of the second spiral rib 2b is R1, and the maximum outer diameter of the auxiliary cutting edge 7a is R2, R2≥R1. The large radius of the auxiliary cutting edge is because the upper part of the auxiliary cutting edge extends into the bin, and the large radius can better cooperate with the inner wall of the bin for pre-breaking.

[0027] Further preferably, the number of the second spiral rib 2b is equal to or greater than the number of the first spiral rib 1b. Preferably, the number of the second spiral rib is greater than the number of the first spiral rib, so that the extrusion gap can be narrowed, thereby further extruding the fruits and vegetables to achieve the purpose of fine extrusion of juice, and the juice extraction effect is better.

[0028] In the embodiment, a feeding gap 8 is formed between the first extrusion cutting part 1 and the second extrusion cutting part 2, and the material passing through the first extrusion cutting part 1 enters the second extrusion cutting part 2 after being uniformly fed in the feeding gap 8. Further preferably, the height H of the feeding gap 8 is 1-15 mm.

[0029] The feeding gap makes the material passing through the first extrusion cutting part converge and then uniformly enter the second extrusion cutting part, so that the juice extraction effect is better. In a conventional one-stage juice extraction, due to the randomness of the material entering, there is a problem of uneven distribution of the material, and the less material affects the extrusion effect, and the more material is easy to cause damage to the juice extraction assembly or the machine to be stuck.

[0030] The screw rod in the embodiment is used and installed in the same way as the prior art.

[0031] The above embodiments are preferred embodiments of the present application, which are only used to facilitate the description of the present application and do not limit the present application in any form. Any person skilled in the art can make partial changes or modifications to the equivalent embodiments within the scope of the technical features disclosed by the present application without departing from the technical features of the present application, and the changes or modifications still belong to the scope of the technical features of the present application.

Claims

1. A combined screw for a juicer, comprising a first extrusion cutting section (1) and a second extrusion cutting section (2) that cooperate with each other, characterized in that, The first extrusion cutting part (1) and the second extrusion cutting part (2) are assembled into a whole by fastening structure; a transmission shaft (3) that is linked with an external driving component is provided on the first extrusion cutting part (1) or the second extrusion cutting part (2) along the axial direction, and the transmission shaft (3) is embedded in the first extrusion cutting part (1) or the second extrusion cutting part to form a whole.

2. The combined screw for a juicer according to claim 1, characterized in that, The fastening structure includes a limiting recess (4) and a limiting protrusion (5) respectively disposed on the first extrusion cutting part (1) and the second extrusion cutting part (2) and cooperating with each other.

3. The combined screw for a juicer according to claim 2, characterized in that, The fastening structure also includes an internal threaded hole (6) axially disposed on the bottom surface of the first extrusion cutting part (1), and a connecting hole corresponding to the internal threaded hole (6) is provided on the second extrusion cutting part (2), and the fastening screw passes through the connecting hole and is threadedly connected to the internal threaded hole (6).

4. The combined screw for a juicer according to claim 1, characterized in that, The drive shaft (3) is embedded in the first extrusion cutting part (1).

5. A combined screw for a juicer according to claim 1, characterized in that, The first extrusion cutting part (1) includes a first base (1a), and a spiral first rib (1b) is integrally formed on the outer wall of the first base (1a) along the circumferential direction; A pre-crushing cutter head (7) extending spirally upward is integrally formed on the upper end of the first base (1a), and an auxiliary cutting edge (7a) is integrally formed on the outer side of the pre-crushing cutter head (7) along the spiral trajectory.

6. A combined screw for a juicer according to claim 5, characterized in that, The second extrusion cutting part (2) includes a second base (2a), and a spiral second rib (2b) is integrally formed on the outer wall of the second base (2a) in the circumferential direction; The maximum outer diameter of the second rib (2b) is R1, and the maximum outer diameter of the auxiliary cutting edge (7a) is R2, where R2 ≥ R1.

7. A combined screw for a juicer according to claim 6, characterized in that, The number of the second reinforcing bar (2b) is equal to or greater than the number of the first reinforcing bar (1b).

8. A combined screw for a juicer according to claim 1, characterized in that, A feeding gap (8) is formed between the first extrusion cutting section (1) and the second extrusion cutting section (2). The material from the first extrusion cutting section (1) is uniformly fed twice in the feeding gap (8) and then enters the second extrusion cutting section (2).

9. A combined screw for a juicer according to claim 8, characterized in that, The height H of the feed gap (8) is 1-15mm.

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