Squeezing head and juicer

Abstract

The squeezing head comprises a main body part, a main body part and a movable pre-cutting part, a squeezing spiral part is arranged on the outer side wall of the main body part, and the movable pre-cutting part is movably arranged at the top end of the main body part so as to be switched between an unfolded state and a folded state; the rotating diameter of the unfolded movable pre-cutting part is larger than that of the folded movable pre-cutting part, and the rotating diameter of the movable pre-cutting part is the rotating diameter of the movable pre-cutting part in the radial direction of the main body part. According to the squeezing head, the movable pre-cutting part is arranged at the top end of the main body part, so that food materials can be effectively pre-cut on the premise that the squeezing head is convenient to disassemble and assemble, feeding of the food materials is smoother, residues are few, and the juice yield and the juice squeezing efficiency of the squeezing head are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of juicers, and particularly to a pressing head and a juicer. Background Art

[0002] A juicer is a machine that can quickly squeeze fruits and vegetables into fruit and vegetable juices, capable of juicing a variety of different types of vegetables and fruits, and allowing users to choose according to their preferences.

[0003] At the top of the pressing screw of the existing juicer, a material cutting part is usually fixedly arranged to pre-cut larger pieces of food materials into smaller volumes, facilitating the improvement of the pressing efficiency when the subsequent pressing spiral part performs pressing; at the same time, in order to ensure that the material cutting part has a relatively large material sweeping diameter, the material cutting part is usually set relatively large. In this way, it often leads to interference between the pressing screw and the inner wall of the pressing barrel, resulting in the inability to conveniently assemble and disassemble the pressing screw and the pressing barrel. Summary of the Invention

[0004] Based on this, it is necessary to provide a pressing head and a juicer that are easy to disassemble and assemble and can effectively pre-cut food materials.

[0005] A pressing head includes:

[0006] A main body part;

[0007] A pressing spiral part, arranged on the outer side wall of the main body part; and

[0008] A movable pre-cutting part, the movable pre-cutting part is movably arranged at the top of the main body part to switch between an unfolded state and a retracted state, and the rotation diameter of the movable pre-cutting part after unfolding is larger than the rotation diameter of the movable pre-cutting part after retraction. The rotation diameter of the movable pre-cutting part is the rotation diameter of the movable pre-cutting part in the radial direction of the main body part.

[0009] In one embodiment, the main body part includes a material crushing section and a pressing section connected in sequence from top to bottom. A material crushing part is arranged on the outer side wall of the material crushing section, the pressing spiral part is arranged on the outer side wall of the pressing section, and the movable pre-cutting part is arranged at the top of the material crushing section.

[0010] In one embodiment, the movable pre-cutting part is slidably engaged with the main body part to switch between an unfolded state and a retracted state; or, the movable pre-cutting part is rotatably engaged with the main body part to switch between an unfolded state and a retracted state.

[0011] In one embodiment, the main body part has a first axis, and the movable pre-cutting part can rotate relative to the main body part around a second axis to switch between an unfolded state and a retracted state, and the first axis and the second axis are arranged eccentrically.

[0012] In one embodiment, the main body portion has a first axis, and the movable pre-cutting portion can rotate relative to the main body portion about a second axis to switch between a deployed state and a retracted state, and the first axis and the second axis are arranged neither parallel nor intersecting.

[0013] In one embodiment, a smooth transition surface is provided at the free end of the movable pre-cutting portion.

[0014] In one embodiment, when the movable pre-cutting portion is in the deployed state or the retracted state, the center of the movable pre-cutting portion is located on one side of the activity center of the movable pre-cutting portion.

[0015] In one embodiment, a rotating shaft is provided at the top end of the main body portion, and the movable pre-cutting portion is rotatably sleeved on the rotating shaft, and the movable pre-cutting portion can rotate relative to the rotating shaft about the axis of the rotating shaft.

[0016] In one embodiment, the movable pre-cutting portion is rotationally engaged with the main body portion, and the rotation angle of the movable pre-cutting portion ≤ 180°.

[0017] In one embodiment, a reset mechanism is provided between the movable pre-cutting portion and the main body portion.

[0018] In one embodiment, a limiting mechanism is provided between the movable pre-cutting portion and the main body portion.

[0019] In one embodiment, when the pressing head rotates, the rotation diameter A1 of the deployed movable pre-cutting portion is greater than the maximum rotation diameter B of the pressing screw portion.

[0020] In one embodiment, the rotation diameter A1 of the deployed movable pre-cutting portion satisfies 80 mm ≤ A1 ≤ 400 mm.

[0021] In one embodiment, the rotation diameter A2 of the retracted movable pre-cutting portion satisfies 30 mm ≤ A2 ≤ 70 mm.

[0022] In one embodiment, 1.2 ≤ A1 / A2 ≤ 10.

[0023] In one embodiment, the movable pre-cutting portion is provided with a toothed cutter.

[0024] In one embodiment, the movable pre-cutting portion is located above the pressing screw portion, and the distance between the deployed movable pre-cutting portion and the pressing screw portion closest to it ≥ 30 mm.

[0025] In one embodiment, the movable pre-cutting portion is made of metal.

[0026] A juicer, comprising:

[0027] A pressing barrel; and

[0028] The above-mentioned pressing head is rotatably installed in the pressing barrel, and the pressing head is used to cooperate with the pressing barrel to press food materials to achieve juice extraction.

[0029] In one embodiment, the minimum distance B1 between the unfolded movable pre-cutting part and the inner wall of the pressing barrel satisfies 0.3mm < B1 < 30mm.

[0030] In one embodiment, a material blocking part is provided on the inner wall of the pressing barrel, and the minimum distance B2 between the unfolded movable pre-cutting part and the material blocking part satisfies 0.3mm < B2 < 30mm.

[0031] For the pressing head provided in this application, the top of the main body part is configured with a movable pre-cutting part for pre-cutting food materials. When it is necessary to disassemble and assemble the pressing head relative to the pressing barrel, the movable pre-cutting part can be switched to the retracted state to reduce the rotation diameter of the movable pre-cutting part, thereby reducing the size of the pressing head in the radial direction, avoiding interference between the pressing head and the inner wall of the pressing barrel, and facilitating the disassembly, cleaning and assembly between the pressing head and the pressing barrel; when the assembly between the pressing head and the pressing barrel is completed and the juice extraction operation is started, when the movable pre-cutting part touches the food material, the movable pre-cutting part will automatically switch from the retracted state to the unfolded state under the action of the food material. At this time, the rotation diameter of the unfolded movable pre-cutting part will increase, so that the food material can be effectively pre-cut. At this time, the feeding of the food material is smoother and the residue is less, so that the pressing spiral part can further finely cut and grind the food material, preventing the pressing head from suddenly stopping due to the too large volume of the food material, so as to improve the juice yield and juice extraction efficiency of the pressing head; therefore, by configuring the movable pre-cutting part at the top of the main body part in this application, it is possible to effectively pre-cut the food material while ensuring the convenient disassembly and assembly of the pressing head, so that the feeding of the food material is smoother and the residue is less, effectively improving the juice yield and juice extraction efficiency of the pressing head. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a cross-sectional view of the juicer in one embodiment;

[0034] Figure 2Schematic structural diagram of the pressing head in an embodiment;

[0035] Figure 3 is Figure 2 Schematic structural diagram of the pressing head shown in the deployed state and the retracted state;

[0036] Figure 4 is Figure 3 Top view of the pressing head shown;

[0037] Figure 5 Schematic structural diagram of the pressing head in another embodiment;

[0038] Figure 6 is Figure 5 Schematic structural diagram of the pressing head shown from another perspective;

[0039] Figure 7 Schematic structural diagram of the pressing head in another embodiment. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, "and / or" throughout the text includes three solutions. Taking A and / or B as an example, it includes the technical solution of A, the technical solution of B, and the technical solution that A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Such as Figure 1As shown in the figure, the present application provides a juicer, which includes a pressing barrel 200 and a pressing head 100. The pressing barrel 200 is used to accommodate food materials, and the pressing head 100 is rotatably installed in the pressing barrel 200. The pressing head 100 is used to cooperate with the pressing barrel 200 to press the food materials to achieve juicing. Specifically, the food materials put into the pressing barrel 200 can contact the pressing head 100 after falling by gravity and be pressed by the cooperation of the pressing head 100 and the pressing barrel 200 to achieve juicing.

[0044] As Figure 2 and Figure 3 shown in the figure, the pressing head 100 includes a main body part 110, a pressing screw part 120 and a movable pre-cutting part 130. The pressing screw part 120 is arranged on the outer side wall of the main body part 110; the movable pre-cutting part 130 is movably arranged at the top of the main body part 110 to switch between an unfolded state and a retracted state. The rotation diameter of the unfolded movable pre-cutting part 130 is larger than the rotation diameter of the retracted movable pre-cutting part 130. The rotation diameter of the movable pre-cutting part 130 is the rotation diameter of the movable pre-cutting part 130 in the radial direction of the main body part 110.

[0045] For the pressing head 100 provided by the present application, a movable pre-cutting part 130 for pre-cutting food materials is configured at the top of the main body part 110. When it is necessary to disassemble and assemble the pressing head 100 relative to the pressing barrel 200, the movable pre-cutting part 130 can be switched to the retracted state to reduce the rotation diameter of the movable pre-cutting part 130, so as to reduce the size of the pressing head 100 in the radial direction, avoid interference between the pressing head 100 and the inner wall of the pressing barrel 200, and facilitate the disassembly, cleaning and assembly between the pressing head 100 and the pressing barrel 200; when the assembly between the pressing head 100 and the pressing barrel 200 is completed and the juicing operation is started, when the movable pre-cutting part 130 touches the food materials, the movable pre-cutting part 130 will automatically switch from the retracted state to the unfolded state under the action of the food materials. At this time, the rotation diameter of the unfolded movable pre-cutting part 130 will increase, so as to effectively pre-cut the food materials. At this time, the feeding of the food materials is smoother and the residue is less, so that the pressing screw part 120 can further finely cut and grind the food materials to prevent the pressing head 100 from stopping suddenly due to the too large volume of the food materials, so as to improve the juice yield and juicing efficiency of the pressing head 100; therefore, by configuring the movable pre-cutting part 130 at the top of the main body part 110, the present application can effectively pre-cut the food materials while ensuring the convenient disassembly and assembly of the pressing head 100, so that the feeding of the food materials is smoother and the residue is less, effectively improving the juice yield and juicing efficiency of the pressing head 100.

[0046] Refer to Figure 3 and Figure 4, for facilitating the display of the positions and rotation diameters of the movable pre-cutting part 130 in the unfolded state and the folded state, when the movable pre-cutting part 130 is in the unfolded state, the movable pre-cutting part 130 is located at the first position, and at this time, the movable pre-cutting part 130 in the unfolded state is represented by a solid line; when the movable pre-cutting part 130 is in the folded state, the movable pre-cutting part 130 is at the second position, and at this time, the movable pre-cutting part 130 in the folded state is represented by a dashed line. Among them, circle O1 is a circular area formed with the center of the main body part 110 as the center of the circle and the rotation diameter of the unfolded movable pre-cutting part 130 as the diameter, and circle O2 is a circular area formed with the center of the main body part 110 as the center of the circle and the rotation diameter of the folded movable pre-cutting part 130 as the diameter. Circle O1 and circle O2 are concentrically arranged, and the diameter of circle O1 is greater than the diameter of circle O2, that is, the rotation diameter of the unfolded movable pre-cutting part 130 is greater than the rotation diameter of the folded movable pre-cutting part 130.

[0047] As Figure 2 shown, the main body part 110 includes a crushing section 112 and a pressing section 114 connected in sequence from top to bottom. A crushing part 140 is arranged on the outer side wall of the crushing section 112, a pressing screw part 120 is arranged on the outer side wall of the pressing section 114, and a movable pre-cutting part 130 is arranged at the top end of the crushing section 112. The crushing section 112 is used for the preliminary crushing of food materials, so that when the food materials spiral down from top to bottom, only the crushing action occurs, preventing the food materials from being too large in volume and causing the pressing head 100 to stop suddenly; the pressing section 114 is used for the further fine pressing of food materials. In this embodiment, the crushing process and the juice squeezing and residue discharging process of food materials are carried out separately. During the crushing process, since there is no need for juice squeezing and residue discharging, there is no need to set components such as a filter screen and a rotating brush in the pressing barrel 200, so that the food materials in the pressing barrel 200 can be crushed under the combined action of the pressing barrel 200 and the pressing head 100.

[0048] In addition, the movable pre-cutting part 130 at the top end of the crushing section 112 can cut the food materials before they enter the crushing section 112, so that the larger food materials can be cut into smaller volumes by the movable pre-cutting part 130, which is convenient for improving the crushing efficiency when the subsequent crushing part 140 performs crushing. Specifically, the crushing part 140 is located below the movable pre-cutting part 130 and is arranged adjacent to the movable pre-cutting part 130. Since most of the food materials will automatically fall by gravity after being pre-cut by the movable pre-cutting part 130, the crushing part 140 is arranged at the movable pre-cutting part 130 and designed adjacent to the movable pre-cutting part 130, which can effectively improve the crushing efficiency, and thus effectively improve the juice squeezing efficiency and the juice yield.

[0049] In one embodiment, the cross-sectional area of the main body portion 110 gradually increases from the material crushing section 112 to the pressing section 114, that is to say, the main body portion 110 is generally conical. With the above arrangement, when the pressing head 100 is used in a juicer to crush food materials, the food materials can be crushed more and more finely, so that the crushing effect of the juicer on the food materials can be improved, and the juice yield can be increased.

[0050] As Figure 2 shown, in one embodiment, a step 150 is provided at the connection between the material crushing section 112 and the pressing section 114, and pressing spiral portions 120 are provided on the outer side walls of both the material crushing section 112 and the pressing section 114. Specifically, in order to further increase the juice yield, a plurality of pressing spiral portions 120 are spaced along the axial direction of the pressing head 100 on the outer side walls of the material crushing section 112 and the pressing section 114.

[0051] In one embodiment, the movable pre-cutting portion 130 is slidably engaged with the main body portion 110 to switch between the deployed state and the retracted state. In one embodiment, the movable pre-cutting portion 130 is rotatably engaged with the main body portion 110 to switch between the deployed state and the retracted state.

[0052] As Figure 2 and Figure 3 shown, in one embodiment, the main body portion 110 has a first axis, and the movable pre-cutting portion 130 can rotate relative to the main body portion 110 about a second axis to switch between the deployed state and the retracted state, and the first axis and the second axis are arranged non-coaxially. It can be understood that if the first axis and the second axis are coaxially arranged, if the movable pre-cutting portion 130 after deployment is to obtain a larger rotation diameter, the length of the movable pre-cutting portion 130 needs to be set longer; therefore, the first axis and the second axis are arranged non-coaxially to ensure that the movable pre-cutting portion 130 after deployment has a sufficient large rotation diameter while shortening the length of the movable pre-cutting portion 130 as much as possible.

[0053] In an alternative embodiment, the main body portion 110 has a first axis, and the movable pre-cutting portion 130 can rotate relative to the main body portion 110 about a second axis to switch between the deployed state and the retracted state, and the first axis and the second axis are arranged neither parallel nor intersecting.

[0054] As Figure 2 and Figure 5 shown, in one embodiment, a rotating shaft 160 is provided at the top end of the main body portion 110, the movable pre-cutting portion 130 is rotatably sleeved on the rotating shaft 160, and the movable pre-cutting portion 130 can rotate relative to the rotating shaft 160 about the axis of the rotating shaft 160 to switch between the deployed state and the retracted state. Among them, the axis of the rotating shaft 160 is the second axis, and the axis of the rotating shaft 160 and the first axis of the main body portion 110 are arranged non-coaxially.

[0055] AsFigure 2 As shown, in an alternative embodiment, the axis of the rotating shaft 160 is parallel to the first axis of the main body 110, and the movable pre-cutting portion 130 can rotate around the axis of the rotating shaft 160 in the first plane to switch between the deployed state and the retracted state; wherein, the first plane is a plane perpendicular to the first axis of the main body 110.

[0056] In an alternative embodiment, when the axis of the rotating shaft 160 is parallel to the first axis of the main body 110, the movable pre-cutting portion 130 includes a rotating portion 131 and a cutting portion 132. The rotating portion 131 is columnar, and the rotating portion 131 is rotatably sleeved on the rotating shaft 160, and the rotating portion 131 is coaxially arranged with the rotating shaft 160. One end of the cutting portion 132 is connected to the rotating portion 131, and the other end of the cutting portion 132 is suspended and extends in a direction away from the rotating portion 131. Specifically, the extending direction of the cutting portion 132 is perpendicular to the axial direction of the rotating portion 131, and the rotating portion 131 and the cutting portion 132 are integrally formed.

[0057] As Figure 5 and Figure 6 shown, in an alternative embodiment, the axis of the rotating shaft 160 is perpendicular to the first axis of the main body 110, and the movable pre-cutting portion 130 can rotate around the axis of the rotating shaft 160 in the first vertical plane to switch between the deployed state and the retracted state; wherein, the first vertical plane is a vertical plane parallel to the first axis of the main body 110.

[0058] In an alternative embodiment, when the axis of the rotating shaft 160 is parallel to the first axis of the main body 110, the movable pre-cutting portion 130 includes a rotating portion 131 and a cutting portion 132. Both the rotating portion 131 and the cutting portion 132 are rod-shaped. One end of the rotating portion 131 is rotatably sleeved on the rotating shaft 160, and the cutting portion 132 is connected to the end of the rotating portion 131 away from the rotating shaft 160. The cutting portion 132 extends in a direction away from the rotating portion 131, and an angle is formed between the cutting portion 132 and the rotating portion 131. The rotating portion 131 and the cutting portion 132 can be integrally formed. Further, weight-reducing holes 133 are provided on both the rotating portion 131 and the cutting portion 132.

[0059] As Figure 7As shown, in an alternative embodiment, a ball head 162 is provided at the top end of the main body portion 110. The movable pre-cutting portion 130 is rotatably sleeved on the ball head 162, and the movable pre-cutting portion 130 can rotate relative to the ball head 162 to switch between the deployed state and the retracted state. In an alternative embodiment, the ball head 162 can be a hemispherical head. Further, when the movable pre-cutting portion 130 is rotatably connected to the main body portion 110 through the ball head 162, the movable pre-cutting portion 130 includes a rotating portion 131 and a cutting portion 132. Both the rotating portion 131 and the cutting portion 132 are rod-shaped. One end of the rotating portion 131 is rotatably sleeved on the ball head 162. The cutting portion 132 is connected to the end of the rotating portion 131 away from the ball head 162. The cutting portion 132 extends in a direction away from the rotating portion 131. An angle is formed between the cutting portion 132 and the rotating portion 131. The rotating portion 131 and the cutting portion 132 can be integrally formed.

[0060] In an alternative embodiment, when the movable pre-cutting portion 130 is in the deployed state or the retracted state, the center of the movable pre-cutting portion 130 is located on one side of the movement center of the movable pre-cutting portion 130.

[0061] It can be understood that after the juicer finishes working, the pressing head 100 usually needs to be disassembled and cleaned. In this case, the movable pre-cutting portion 130 needs to be switched back to the retracted state again. If the rotation angle of the movable pre-cutting portion 130 is too large, it is not conducive to the automatic return of the movable pre-cutting portion 130. In an alternative embodiment, to improve the reset efficiency of the movable pre-cutting portion 130, the movable pre-cutting portion 130 is rotationally matched with the main body portion 110, and the rotation angle of the movable pre-cutting portion 130 ≤ 180°.

[0062] In an embodiment, to improve the reset convenience of the movable pre-cutting portion 130 for facilitating the disassembly and cleaning of the pressing head 100, a reset mechanism is provided between the movable pre-cutting portion 130 and the main body portion 110. The reset mechanism is used to drive the movable pre-cutting portion 130 to rotate and reset, so that the movable pre-cutting portion 130 automatically switches from the deployed state to the retracted state. In an alternative embodiment, the reset mechanism can include a torsion spring, silica gel, a chute or a hinge mechanism, etc. In an alternative embodiment, when the movable pre-cutting portion 130 is rotatably connected to the main body portion 110 through a rotating shaft 160, the reset mechanism includes a torsion spring. The torsion spring is wound around the rotating shaft 160 and connected to the movable pre-cutting portion 130.

[0063] It can be understood that if the rotation angle of the movable pre-cutting portion 130 is too large, it will increase the reset difficulty of the movable pre-cutting portion 130 and increase the structural instability. As Figure 2 shown, in an embodiment, to limit the rotation angle of the movable pre-cutting portion 130 relative to the main body portion 110, a limiting mechanism 170 is provided between the movable pre-cutting portion 130 and the main body portion 110. In an alternative embodiment, the limiting mechanism 170 can include a limiting block or a limiting groove.

[0064] As Figure 2 shown, in an alternative embodiment, when the axis of the rotating shaft 160 is parallel to the first axis of the main body 110, the limiting mechanism 170 includes a limiting block 172. The limiting block 172 is arranged at the top of the main body 110 and surrounds the outer periphery of the movable pre-cutting part 130. The limiting block 172 can abut against the movable pre-cutting part 130 to limit the rotation angle of the movable pre-cutting part 130 relative to the main body 110. Specifically, when the axis of the rotating shaft 160 is parallel to the first axis of the main body 110, the limiting block 172 surrounds the outer periphery of the rotating part 131, and the limiting block 172 can abut against the cutting part 132 to limit the rotation angle of the movable pre-cutting part 130 relative to the main body 110.

[0065] As Figure 5 and Figure 6 shown, in an alternative embodiment, when the axis of the rotating shaft 160 is perpendicular to the first axis of the main body 110, the limiting mechanism 170 includes a limiting groove 174. The limiting groove 174 is arranged at the top of the main body 110 and extends along the rotation direction of the movable pre-cutting part 130. The movable pre-cutting part 130 has a limiting post 134, and the limiting post 134 is rotationally limited in the limiting groove 174 to limit the rotation angle of the movable pre-cutting part 130 relative to the main body 110. Specifically, when the axis of the rotating shaft 160 is perpendicular to the first axis of the main body 110, a stop block 180 is arranged at the top of the main body 110, and the stop block 180 extends in a direction away from the top of the main body 110. The limiting groove 174 is arranged at the top of the stop block 180, the rotating shaft 160 is arranged at the bottom of the stop block 180, the limiting post 134 protrudes from the rotating part 131, the limiting post 134 is specifically arranged in the middle of the rotating part 131, and the axial direction of the limiting post 134 is parallel to the axial direction of the rotating shaft 160. Among them, the limiting post 134, the rotating part 131 and the cutting part 132 can be integrally formed.

[0066] It can be understood that in order for the juicer to obtain a larger diameter with a small-power power unit and reduce product costs, in an optional embodiment, when the pressing head 100 rotates, the rotation diameter A1 of the unfolded movable pre-cutting part 130 is greater than the maximum rotation diameter B of the pressing screw part 120; preferably, the rotation diameter A1 of the unfolded movable pre-cutting part 130 satisfies 80 mm ≤ A1 ≤ 400 mm. Further, it can be understood that when the pressing head 100 is disassembled and assembled, the inner wall of the pressing barrel 200 cannot interfere with the pressing head 100. Therefore, the range of the rotation diameter A2 of the retracted movable pre-cutting part 130 basically defines the range of the pressing diameter of the pressing cavity of the pressing barrel 200. In order to press larger food materials with a smaller pressing cavity and thus reduce the load on the pressing head 100, the rotation diameter A2 of the retracted movable pre-cutting part 130 satisfies 30 mm ≤ A2 ≤ 70 mm; preferably, 1.2 ≤ A1 / A2 ≤ 10.

[0067] It can be understood that after the movable pre-cutting part 130 cuts the food materials, the food materials usually enter the pressing cavity through the gap between the movable pre-cutting part 130 and the pressing screw part 120 closest to it. If this gap is too small, it is not conducive to feeding; in an embodiment, in order to improve the feeding efficiency, the movable pre-cutting part 130 is located above the spiral pressing part, and the distance between the unfolded movable pre-cutting part 130 and the pressing screw part 120 closest to it is ≥ 30 mm.

[0068] In an embodiment, in order to ensure that the movable pre-cutting part 130 can sweep to the edge of the pressing barrel 200 as much as possible, and at the same time ensure the strength and cutting effect of the movable pre-cutting part 130, the minimum distance B1 between the unfolded movable pre-cutting part 130 and the inner wall of the pressing barrel 200 satisfies 0.3 mm < B1 < 30 mm.

[0069] As Figure 1 shown, in an embodiment, a material blocking part 220 is provided on the inner wall of the pressing barrel 200. The main function of the material blocking part 220 is to cooperate with the movable pre-cutting part 130 for cutting materials. The minimum distance B2 between the unfolded movable pre-cutting part 130 and the material blocking part 220 satisfies 0.3 mm < B2 < 30 mm to ensure the material blocking effect and efficiency of the material blocking part 220.

[0070] In an embodiment, the movable pre-cutting part 130 is made of metal to improve the strength of the movable pre-cutting part 130. In an embodiment, in order to facilitate cutting of food materials, the movable pre-cutting part 130 is provided with tooth-shaped cutters. Specifically, the tooth-shaped cutters are arranged on the outer edge of the cutting part 132.

[0071] In one embodiment, a smooth transition surface is provided at the free end of the movable pre-cutting portion 130. With such a setting, when the pressing head 100 is disassembled or assembled relative to the pressing barrel 200, when the inner wall of the pressing barrel 200 touches the movable pre-cutting portion 130, the two can rely on the action and reaction forces between the inner wall of the pressing barrel 200 and the smooth transition surface of the movable pre-cutting portion 130 to push the movable pre-cutting portion 130 in the retracting direction, avoiding interference between the inner wall of the pressing barrel 200 and the movable pre-cutting portion 130. Specifically, the smooth transition surface is provided at one end of the cutting portion 132 away from the rotating portion 131.

[0072] As Figure 1 and Figure 2 shown, further, the bottom of the pressing barrel 200 has a limiting platform 240, which can abut against the frustum 190 at the bottom of the pressing head 100, so as to limit the upward movement of the pressing head 100, ensure the pressing accuracy, and improve the juice yield and juicing efficiency. Among them, the limiting platform 240 is distributed along the circumferential direction of the pressing barrel 200, and the frustum 190 is provided at the bottom of the main body portion 110 and is distributed along the circumferential direction of the main body portion 110.

[0073] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. A pressing head, characterized in that: include: Main body; A squeezing spiral part, arranged on the outer side wall of the main body; as well as An active pre-cutting portion, wherein the active pre-cutting portion is movably arranged at the top end of the main body portion to switch between an expanded state and a folded state, wherein the rotation diameter of the active pre-cutting portion after expansion is greater than the rotation diameter of the active pre-cutting portion after folding, and the rotation diameter of the active pre-cutting portion is the rotation diameter of the active pre-cutting portion in the radial direction of the main body portion.

2. The pressing head according to claim 1, characterized in that: The main body comprises a crushing section and a pressing section which are sequentially connected from top to bottom, the crushing section is provided with a crushing part on the outer side wall of the crushing section, the pressing spiral part is provided on the outer side wall of the pressing section, and the movable pre-cutting part is provided at the top end of the crushing section.

3. The pressing head according to claim 1, characterized in that: The movable pre-cut portion is slidably matched with the main body to switch between the unfolded state and the retracted state; or, the movable pre-cut portion is rotationally matched with the main body to switch between the unfolded state and the retracted state.

4. The pressing head according to claim 1, characterized in that: The main body has a first axis, and the movable pre-cutting portion can rotate relative to the main body around a second axis to switch between an expanded state and a retracted state, and the first axis and the second axis are arranged on different axes.

5. The pressing head according to claim 1, characterized in that: The main body has a first axis, and the movable pre-cutting portion can rotate relative to the main body around a second axis to switch between an expanded state and a retracted state. The first axis and the second axis are not parallel and do not intersect.

6. The pressing head according to claim 1, characterized in that: The free end of the movable pre-cut portion is provided with a smooth transition surface.

7. The pressing head according to claim 1, characterized in that: When the movable pre-cutting portion is in an expanded state or a retracted state, the center of the movable pre-cutting portion is located on one side of the movable center of the movable pre-cutting portion.

8. The pressing head according to claim 1, characterized in that: A rotating shaft is arranged at the top end of the main body, and the movable pre-cutting part is rotatably sleeved on the rotating shaft, and the movable pre-cutting part can rotate relative to the rotating shaft around the axis of the rotating shaft.

9. The pressing head according to claim 1, characterized in that: The movable pre-cutting portion is rotatably matched with the main body, and the rotation angle of the movable pre-cutting portion is ≤180°.

10. The pressing head according to claim 1, characterized in that A reset mechanism is provided between the movable pre-cutting portion and the main body.

11. The pressing head according to claim 1, characterized in that A limiting mechanism is provided between the movable pre-cutting portion and the main body portion.

12. The pressing head according to claim 1, characterized in that When the pressing head rotates, the rotation diameter A1 of the movable pre-cutting portion after expansion is greater than the maximum rotation diameter B of the pressing spiral portion.

13. The pressing head according to claim 1, characterized in that The rotation diameter A1 of the movable pre-cut portion after unfolding satisfies 80mm≤A1≤400mm.

14. The pressing head according to claim 13, characterized in that The rotation diameter A2 of the movable pre-cutting portion after being folded satisfies 30mm≤A2≤70mm.

15. The press head according to claim 14, characterized in that 1.2≤A1 / A2≤10.

16. The press head according to claim 1, characterized in that The movable pre-cutting portion is provided with a toothed cutter.

17. The pressing head according to claim 1, characterized in that The movable pre-cutting portion is located above the squeezing spiral portion, and the distance between the unfolded movable pre-cutting portion and the squeezing spiral portion closest thereto is ≥30 mm.

18. The press head according to claim 1, characterized in that The movable pre-cut portion is made of metal.

19. A juice extractor, characterized in that: include: Pressing barrel; as well as The pressing head as described in any one of claims 1 to 18, wherein the pressing head is rotatably mounted in the pressing barrel, and the pressing head is used to cooperate with the pressing barrel to squeeze food materials to achieve juice extraction.

20. The juice extractor according to claim 19, characterized in that The minimum distance B1 between the unfolded active pre-cutting portion and the inner wall of the pressing barrel meets 0.3 mm. <B1<30mm。 21. The juice extractor according to claim 19, characterized in that The inner wall of the pressing barrel is provided with a material stopper, and the minimum distance B2 between the movable pre-cutting part and the material stopper after expansion meets 0.3 mm. <B2<30mm。

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