cutter

Abstract

The application discloses a shredding machine. The shredding machine comprises a driving device, a first knife assembly and a second knife assembly. The driving device comprises a motor. The first knife assembly comprises a knife shaft and a plurality of first blades arranged at intervals on the knife shaft. The knife shaft is connected with a motor shaft of the motor and is driven by the motor. The knife shaft drives the first blades to rotate. The second knife assembly is arranged side by side with the first knife assembly and comprises a second blade. The second blade is connected with the motor shaft through a linear reciprocating mechanism and is driven by the motor to linearly reciprocate at the side of the first knife assembly. The first knife assembly and the second knife assembly cooperate to process food into filamentous food. The movement direction of the second blade is parallel to the axial direction of the knife shaft. During the linear reciprocating movement, the rotation direction of the motor shaft is unchanged. Thus, the shredding machine can obtain filamentous food by cutting through the food, the shredding is convenient, the shredding machine can press the food, and the unchanged rotation direction of the motor shaft makes the shredding effect good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a shredding machine. BACKGROUND

[0002] At present, in order to obtain meat shreds, generally, first, a meat slice is processed by a slicing machine, that is, a slicing cutter is driven by a motor to work, so that the slicing cutter cuts food into a meat slice, and then the meat slice is put into the slicing machine again to be cut to obtain meat shreds, which is very inconvenient to use. SUMMARY

[0003] The present application aims to provide a shredding machine, which is convenient to shred.

[0004] The present application provides a shredding machine. The shredding machine comprises a driving device, a first knife assembly and a second knife assembly. The driving device comprises a motor. The first knife assembly comprises a knife shaft and a plurality of first knives which are arranged at intervals on the knife shaft, the knife shaft is connected with a motor shaft of the motor and is driven by the motor, and the knife shaft drives the first knife to rotate. The second knife assembly is arranged side by side with the first knife assembly and comprises a second knife, the second knife is connected with the motor shaft through a linear reciprocating mechanism and is driven by the motor to move linearly on the side of the first knife assembly, and the first knife assembly and the second knife assembly cooperate to cut food into shredded food. The movement direction of the second knife is parallel to the axial direction of the knife shaft, and the rotation direction of the motor shaft is unchanged during the linear reciprocating movement.

[0005] As described above, since the motor drives the blade shaft of the first blade assembly to rotate, causing the first blade to rotate, and drives the second blade to reciprocate linearly on the side of the first blade assembly, with the direction of movement parallel to the axial direction of the blade shaft, this has at least the following beneficial effects: 1) After the first blade of the first blade assembly passes over the food (such as meat chunks), shredded food (such as meat shreds) can be obtained behind the second blade, making shredding convenient; 2) Since the direction of movement of the second blade is parallel to the axial direction of the blade shaft and the first and second blade assemblies are arranged side by side, the second blade can reciprocate linearly on the side of the first blade assembly. In addition to facilitating shredding, the shredder can have a larger contact area with the food, better pressing the food onto the cutting board or flat surface, making it less likely to move during the shredding process, resulting in a better shredding effect. For example, because the food is less likely to move, the positional relationship between the food and the first and second blades can always be ensured, thus resulting in shredded food of uniform thickness. 3) Because the direction of rotation of the motor shaft is inconvenient during the linear reciprocating motion of the second blade, compared with some structures that achieve linear reciprocating motion by rotating the motor forward and reverse, the force on the food will not change due to the forward and reverse rotation of the motor. Thus, the positional relationship between the food, the first blade and the second blade is ensured, which is more conducive to shredding. For example, if the motor of this application rotates forward and reverse, the first blade rotates forward and applies a downward force to the food. When the motor shaft rotates in reverse, it applies an upward force to the food. At this time, if a greater force is not used to hold the shredder, shredding cannot be completed well or at all.

[0006] In some embodiments, the shredder satisfies at least one of the following conditions:

[0007] 1) The shredder is a handheld shredder, including a handle. With the above structure, since the first blade assembly and the second blade assembly are arranged side by side, when the shredder is a handheld shredder, you only need to hold the shredder and run it over the food to cut the food into shreds, making shredding convenient.

[0008] 2) The shredder is a handheld shredder, including a handle that houses the drive device; since the drive device is housed in the handle, the handheld shredder is small in size, light in weight, and easy to store, carry and use.

[0009] 3) The cutting edge of the second blade is located on one side of the first blade assembly. As described above, since the cutting edge of the second blade is located on one side of the first blade assembly, it is more conducive to cutting sheet-like ingredients into shreds. If the cutting edge is opposite to the first blade assembly, the accumulated sheet-like ingredients will lift up the shredder, which is not conducive to cutting sheet-like ingredients into shreds.

[0010] In some embodiments, the ratio of the motor speed to the number of reciprocations of the second blade is 1:1 to 3:1.

[0011] As set forth above, since the ratio of the rotating speed of the motor to the reciprocating times of the second blade is 1:1~3:1, the motor load is small, the resistance of cutting food is small, and the moving part is not easy to be stuck, ensuring smooth movement of the second blade. Because, the ratio less than 1:1 will make the motor torque larger, so the motor load is large, the resistance of cutting meat is large; the ratio greater than 3:1, the part between the spiral grooves on the screw is smaller, which cannot provide enough guidance for the movement of the guide rod, and the guide rod is easy to be stuck.

[0012] In some embodiments, the distance of the linear motion of the second blade is S, and 15mm≤S≤35mm.

[0013] As set forth above, when the moving distance S is less than 15mm, the food (such as meat) swings with the second blade, which does not play a role in cutting the food; and when S is greater than 35mm, it will increase the product volume and produce more virtual space, making the volume of the shredding machine larger (especially for handheld shredding machine, it will make the volume larger). In summary, 15mm≤S≤35mm not only can cut the food well, but also effectively utilize the space, and the volume of the shredding machine is small.

[0014] In some embodiments, the linear reciprocating mechanism includes a screw, a screw sleeve and a moving part connected with the second blade, wherein the screw sleeve is provided with a guide groove parallel to the blade shaft; the screw is inserted into the screw sleeve, the surface of the screw is provided with a spiral groove, the spiral groove includes a first section, an intermediate section and a tail section connected in sequence, the pitch of the intermediate section is equal, the pitch of the first section gradually increases from one end of the screw to the intermediate section until equal to the pitch of the intermediate section, and the pitch of the tail section gradually decreases from the intermediate section to the other end of the spiral groove. The moving part is inserted into the spiral groove; under the condition that the motor rotates, the moving part moves along the spiral groove and is guided by the guide groove to realize the linear reciprocating motion.

[0015] As set forth above, since the pitch of the intermediate section is equal, the pitch of the first section gradually increases from one end of the screw to the intermediate section until equal to the pitch of the intermediate section, and the pitch of the tail section gradually decreases from the intermediate section to the other end of the screw, thereby, the first section realizes smooth acceleration, the intermediate section realizes fast movement of the second blade, and the tail section realizes smooth deceleration to zero, so that the second blade runs smoothly and the cutting efficiency is high.

[0016] In some embodiments, the spiral groove satisfies at least one of the following conditions:

[0017] 1) the length of the first section is 1 / 4~3 / 4 of the pitch of the middle section, and / or, the length of the tail section is 1 / 4~3 / 4 of the pitch of the middle section. As set forth above, the length of the first section and the tail section is longer, which is more conducive to achieving the purpose of the second blade 31 to run smoothly and high cutting efficiency.

[0018] 2) the width of the spiral groove is w, 2mm≤w≤10mm, and the pitch of the spiral groove is t, 3mm≤t≤50mm. As set forth above, since the width of the spiral groove of the screw rod is 2-10mm, and the pitch is 3-50mm, it can prevent the motor from reducing the speed or being stuck, and the screw rod is not easy to be damaged.

[0019] In some embodiments, the moving part is in linear contact with the inner surface of the spiral groove.

[0020] As set forth above, since the screw rod is inserted into the screw rod sleeve, the screw rod is provided with the spiral groove, the screw rod sleeve is provided with the guide groove, and the spiral groove spirals around the axial direction of the screw rod so that the side wall of the spiral groove is smoothly transitioned, which, in combination with the screw rod inserted into the screw rod sleeve, the guide groove limiting the moving part, and the moving part in linear contact with the spiral groove, makes the moving part run smoothly in the spiral groove, and the cutting effect is better, for example, the second blade can move to the other end smoothly with reduced impact force.

[0021] In some embodiments, the bottom of the spiral groove and the bottom of the moving part are both arc-shaped.

[0022] As set forth above, the arc shape can guide the guide rod (which can be considered as the moving part) at the intersection of the spiral groove, and thus the guide rod (the moving part) runs smoothly, and finally the second blade runs smoothly, which is convenient for cutting food materials.

[0023] In some embodiments, the spiral groove has two spirals and intersects, and each of the spiral grooves spirals around the axis of the screw rod from one end of the screw rod to the other end of the screw rod; or, the spiral groove has only one spiral and spirals around the axis of the screw rod once to form a ring.

[0024] Therefore, the spiral groove has two spirals or one spiral, and the included angle between the spiral groove and the axis of the screw rod is not too large, which can ensure that the moving part moves smoothly, for example, the moving part will not be stuck.

[0025] In some embodiments, the driving device further comprises a gear box, the input end of the gear box is connected with the motor shaft, and the output end of the gear box is inserted with the screw rod through a flat bit structure and is fixed with each other through a fixing part.

[0026] As set forth above, since the output end of the gear box is inserted into the screw rod through the flat structure and the gear box and the screw rod are further fixed to each other through the fixing member, the screw rod and the output end of the gear box are fixed as a whole, which is beneficial to the transmission of large torque and facilitates the cooperation of the first blade and the second blade to cut the food into filaments.

[0027] In some embodiments, the second knife assembly comprises a knife cover, a first sliding member and a second sliding member, the knife cover is provided with a sliding channel parallel to the guide groove. The first sliding member and the second sliding member are connected with the second blade and are arranged in parallel, and are located in the sliding channel, and the first sliding member is further connected with the moving member; under the action of the linear reciprocating mechanism, the first sliding member and the second sliding member move in the sliding channel to make the second blade move linearly.

[0028] As set forth above, since the sliding channel is parallel to the guide groove, the first sliding member and the second sliding member move linearly in the sliding channel under the action of the linear reciprocating mechanism, and the sliding channel limits the first sliding member and the second sliding member, and in addition, the moving member of the linear reciprocating mechanism moves linearly along the guide groove, so that the second blade moves more stably.

[0029] In some embodiments, the first sliding member and the second sliding member are detachably located in the sliding channel.

[0030] As set forth above, since the first sliding member and the second sliding member are detachably located in the sliding channel, the first sliding member, the second sliding member and the second blade can be detached from the knife cover, which is convenient for cleaning and assembling after cleaning.

[0031] In some embodiments, the moving member comprises a guide rod and a clutch connected with the guide rod, the guide rod can rotate relative to the clutch and is inserted into the spiral groove; the clutch or the guide rod is inserted into the guide groove, and the clutch is further connected with the second blade.

[0032] As set forth above, the movement of the guide rod comprises the combination of rotation and linear movement, since the guide rod is rotationally connected with the clutch, the rotation of the guide rod does not cause the rotation of the clutch, etc., and finally, the smooth operation of the moving member is ensured.

[0033] In some embodiments, the screw rod comprises a tail end boss away from the motor; the tail end boss is in contact with the inner surface of the screw rod sleeve, and there is a gap between the screw rod and the inner surface of the screw rod sleeve.

[0034] As set forth above, since the tail end protrusion is in contact with the inner surface of the screw sleeve and there is a gap between the screw and the inner surface of the screw sleeve, the contact area between the screw and the screw sleeve is small after the screw is inserted into the screw sleeve, wear and tear is reduced, the service life of the screw sleeve and the screw is improved, and since the contact area is small, the screw moves faster compared to a larger contact area, so that the first blade and the second blade can move faster, thereby improving efficiency.

[0035] In some embodiments, the second knife assembly includes a knife cover, the second blade is assembled with the knife cover, the knife cover includes a knife cover middle part and two knife cover end parts respectively located at two ends of the knife cover middle part, the knife cover middle part is provided with a plurality of through holes for food to pass through, and a slicing gap is surrounded by the knife cover middle part and the two knife cover end parts; the second blade moves linearly reciprocatingly in the slicing gap through the two knife cover end parts. The slicing machine includes an assembly shell provided with a containing gap; the knife cover is assembled with the assembly shell, and the two knife cover end parts respectively abut against two side walls of the containing gap.

[0036] As set forth above, since the assembly shell is provided with the containing gap, the knife cover is assembled in the containing gap, the two knife cover end parts respectively abut against the two side walls of the containing gap, the knife cover middle part is provided with through holes for food to pass through, and in addition, the second blade moves linearly reciprocatingly in the slicing gap through the two knife cover end parts, food passing through the through holes can be cut into filamentous food by the second blade, slicing is more convenient, and through the abutment of the side walls and the knife cover end parts and the assembly of the knife cover and the assembly shell, the second knife assembly will not loosen during operation, so that the second blade moves more stably, for example, in the case that a slide is provided on the knife cover, the second blade can stably and smoothly run in the slide.

[0037] In some embodiments, the knife cover middle part and the bottom of the containing gap are assembled through a buckle structure to realize detachable assembly of the second knife assembly and the assembly shell.

[0038] As set forth above, since the second blade is assembled with the knife cover, and the knife cover middle part and the bottom of the containing gap are assembled through a buckle structure to realize detachable assembly of the second knife assembly and the assembly shell, the second knife assembly can be disassembled for cleaning. In the case that the second blade moves linearly reciprocatingly in the slide through the first sliding member and the second sliding member, the second blade and the knife cover are detachable, which facilitates cleaning of the parts of the second knife assembly. Moreover, in the case that the first knife assembly cuts food into slices and the second knife assembly cuts the sliced food into filamentous food, after disassembling the second knife assembly, only the slicing function can be realized, and the slicing machine is convenient to use.

[0039] In some embodiments, the cutter includes a right shell and an end cover, the first cutter assembly further includes a bearing seat and a bearing fixed to the bearing seat, one end of the cutter shaft is tightly fitted with the bearing, and the other end of the cutter shaft is detachably connected with the linear reciprocating mechanism. The bearing seat is detachably connected with the right shell; the end cover is inserted into the bearing seat through a limiting structure to realize disassembly and assembly, and in the assembled state, the end cover and the bearing seat are fixed to each other in the circumferential direction and the axial direction of the bearing seat.

[0040] As described above, since the end cover is inserted into the bearing seat through the limiting structure to realize disassembly and assembly, and in the assembled state, the end cover and the bearing seat are fixed to each other in the circumferential direction and the axial direction of the bearing seat, the end cover is pulled out of the bearing seat, the bearing seat is disassembled from the right shell, and the other end of the cutter shaft is pulled out of the screw rod, thereby realizing the detachability of the first cutter assembly. Of course, the assembly process is opposite to the above process, thereby the first cutter assembly is detachable, which facilitates the cleaning of the first cutter assembly and the assembly of the first cutter assembly after cleaning.

[0041] In some embodiments, the end cover and the bearing seat are inserted through a flat structure, one of the inner part of the end cover and the outer surface of the bearing seat is provided with a groove, and the other is provided with a protrusion, the protrusion is located in the groove, and the limiting structure includes the flat structure, the protrusion and the groove.

[0042] As described above, the flat structure is mainly used to prevent the relative rotation of the end cover and the bearing seat in the circumferential direction of the bearing seat, and the protrusion and the groove are mainly used to prevent the axial movement of the end cover and the bearing seat (of course, they can also prevent the relative rotation in the circumferential direction). In this way, the combination of the flat structure, the protrusion and the groove can realize the assembly of the first cutter assembly only by inserting or pulling out the end cover, which is convenient for assembly. After assembly, the flat structure, the protrusion and the groove jointly limit, which can also ensure the safety and reliability of the first cutter assembly during operation.

[0043] In some embodiments, the bearing seat and the right shell are detachably connected through screwing.

[0044] As described above, the bearing seat is fixed to the right shell by rotating the bearing seat, and then the bearing seat is fixed by the end cover. In this way, the first cutter assembly is convenient to disassemble and assemble, and the safety and reliability of the first cutter assembly during operation can also be ensured.

[0045] In some embodiments, the shredder further comprises a left shell, which, together with the right shell, forms a cavity for accommodating the driving device. The left shell is shorter than the right shell in the axial direction of the motor shaft, and the left shell, the right shell and the end cover form an accommodation gap. The second knife assembly is assembled with the right shell, located in the accommodation gap and abuts against the left shell, and the second knife assembly also abuts against the end cover and the knife cover of the second knife assembly is slidingly assembled with the end cover.

[0046] As arranged above, the sliding assembly facilitates the fixation of the end cover and the bearing seat, and in turn, the fixation of the first knife assembly. After the assembly of the end cover, the second knife assembly is located in the accommodation gap and is fixed by abutting against the end cover and the left shell. After the disassembly of the end cover, the second knife assembly and the first knife assembly can be disassembled, which facilitates the disassembly of the second knife assembly and the first knife assembly. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a perspective view of a shredder according to an embodiment of the present application;

[0048] Figure 2 is Figure 1 an exploded view of the shredder shown in

[0049] Figure 3 is a sectional view of a shredder according to an embodiment of the present application;

[0050] Figure 4 is Figure 3 an enlarged view of part A in

[0051] Figure 5 is Figure 3 an enlarged view of part B in

[0052] Figure 6 is a schematic view of a driving device, a linear reciprocating mechanism, a knife shaft, a first knife blade and a second knife blade of a shredder according to an embodiment of the present application in an exploded state;

[0053] Figure 7 is Figure 6 a sectional view of the driving device, the linear reciprocating mechanism, the first knife assembly and the second knife blade shown in

[0054] Figure 8 is Figure 7 an enlarged view of part M in

[0055] Figure 9 is a schematic view of a driving device and a linear reciprocating mechanism of a shredder according to an embodiment of the present application in an assembled state;

[0056] Figure 10 isFigure 9 is an exploded view of the first screw according to an embodiment of the present application;

[0057] Figure 11 is a perspective view of a first screw according to an embodiment of the present application from one perspective;

[0058] Figure 12 is a perspective view of the first screw from another perspective;

[0059] Figure 13 is a front view of the first screw;

[0060] Figure 14 is a perspective view of a second screw according to an embodiment of the present application from one perspective;

[0061] Figure 15 is a perspective view of the second screw from another perspective;

[0062] Figure 16 is a front view of the second screw;

[0063] Figure 17 is a perspective view of a third screw according to an embodiment of the present application from one perspective;

[0064] Figure 18 is a perspective view of the third screw from another perspective;

[0065] Figure 19 is a front view of the third screw;

[0066] Figure 20 is a perspective view of a first knife assembly according to an embodiment of the present application;

[0067] Figure 21 is an exploded view of the first knife assembly shown in Figure 20

[0068] is a schematic view of a second knife assembly according to an embodiment of the present application with the second blade and the knife cover in an exploded state; Figure 22

[0069] is a schematic view of the second knife assembly according to an embodiment of the present application with the second blade and the knife cover in an assembled state; Figure 23

[0070] is a schematic view of a force analysis of a guide rod in a helical groove in a planar unfolded state; Figure 24

[0071] is a schematic view of the movement of a guide rod in a helical groove. Figure 25 DETAILED DESCRIPTION

[0072] ​Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0073] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the element or object preceding "comprising" or "including" covers the element or object listed following "comprising" or "including" and its equivalents, and do not exclude other elements or objects. The terms "connected," "linked," etc., are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0074] Please see Figure 1 , Figure 2 and Figure 3 and combined Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 20 , Figure 21 , Figure 22 and Figure 23 This application provides a shredder. Although Figure 1 , Figure 2 and Figure 3 The illustration shows a handheld shredder; however, those skilled in the art will understand that, based on the structure of the shredder described later, it may not be a handheld shredder, for example, compared to...Figure 1 、 Figure 2 and Figure 3 , the structure of the housing of the shredder is changed, or a chopping board or a flat surface that has a component that realizes the function is replaced as a component of the shredder, or food is placed in a tray and fed into the shredding gap 324 of the present application, and automatic shredding can also be realized. The shredder comprises a driving device 1, a first knife assembly 2, and a second knife assembly 3. The driving device 1 comprises a motor 11. Referring to Figure 20 and Figure 21 in combination with Figure 3 and Figure 2 , the first knife assembly 2 comprises a knife shaft 21 and a plurality of first knife blades 22 that are arranged at intervals on the knife shaft 21. The structure of the first knife blades 22 is not limited to the disc shape as shown in the drawings. The knife shaft 21 is connected to the motor shaft of the motor 11 and is driven by the motor 11, and the knife shaft 21 drives the first knife blades 22 to rotate (R1 in Figure 7 indicates the rotation direction of the knife shaft 21). Referring to Figure 22 and Figure 23 in combination with Figure 7 , Figure 2 and Figure 1 , the second knife assembly 3 is arranged side by side with the first knife assembly 2, and as shown in the drawings, the second knife assembly 3 and the first knife assembly 2 are both arranged horizontally along the axial direction of the motor shaft to realize the side-by-side arrangement, so that the meat or other food to be processed can be pressed, and in addition, if the shredder is not a handheld shredder, a component equivalent to a chopping board or a table surface can be added. The second knife assembly 3 comprises a second knife blade 31, which is connected to the motor shaft through a linear reciprocating mechanism 4 and is driven by the motor 11 to move linearly on the side of the first knife assembly 2. The first knife assembly 2 and the second knife assembly 3 cooperate to shred the food into shredded food, that is, the first knife assembly 2 can first cut the food into sliced food, and then the second knife assembly 3 can cut the sliced food into shredded food, or the second knife assembly 3 can first cut the food into sliced food, and then the first knife assembly 2 can cut the sliced food into shredded food. In addition, for shredding, the present application is not limited to cutting meat into shredded meat, but can also cut vegetables, such as potato shreds, radish shreds, and the like. Referring to Figure 7 in combination with Figure 3 and Figure 1 , the movement direction of the second knife blade 31 (R2 and R3 in Figure 7 indicate the direction of linear reciprocating movement) is parallel to the axial direction of the knife shaft 21, and during linear reciprocating movement, the rotation direction of the motor shaft does not change.

[0075] Referring to Figure 7 in combination with Figure 3 and Figure 2Taking a meat block as an example, the first blade assembly 2 cuts the meat into slices, and the second blade assembly 3 cuts the slices into shreds. The working principle of the above-mentioned shredder is described as follows: The meat block is placed on a cutting board or the work surface, and the shredder is placed flat. After the handheld shredder passes over the surface of the meat block, neat shreds of meat flow out from the second blade 31 (the direction of the shreds relative to the direction of the shredder is as follows). Figure 1 (As shown by the middle arrow R01); the above process is more specifically as follows: the rotation of the motor 11 of the drive device 1 is divided into two paths. First, it drives the blade shaft 21 of the first blade assembly 2 to rotate, thereby causing the first blade 22 to rotate and cut a part of the food into slices (for example, when cutting meat, only a part of the whole piece of meat is cut into slices, and the slices stick together with the other part of the meat). Second, the linear reciprocating mechanism 4 drives the second blade 31 to reciprocate linearly on the side of the first blade assembly 2, and the direction of movement of the second blade 31 is parallel to the axial direction of the blade shaft 21. In this way, the second blade 31 can cut the slices into shreds.

[0076] As described above, since the motor 11 drives the cutter shaft 21 of the first cutter assembly 2 to rotate, thereby causing the first blade 22 to rotate, and drives the second blade 31 to reciprocate linearly on the side of the first cutter assembly 2 in a direction parallel to the axial direction of the cutter shaft 21, this has at least the following beneficial effects:

[0077] 1) After the first blade 22 of the first blade assembly 2 cuts through the food (such as meat chunks), shredded food (such as meat shreds) can be obtained at the rear of the second blade 31, making the shredder convenient for cutting shreds;

[0078] 2) Because the movement direction of the second blade 31 is parallel to the axis of the blade shaft 21 and the first blade assembly 2 and the second blade assembly 3 are arranged side by side, the second blade 31 can reciprocate linearly on the side of the first blade assembly 2. This facilitates shredding and allows the shredder to have a larger contact area with the food, better pressing the food onto the cutting board or flat surface, making it less likely to move during shredding and resulting in better shredding. For example, because the food is less likely to move, the positional relationship between the food and the first blade 22 and the second blade 31 is always maintained, resulting in shredded food of uniform thickness. Furthermore, because the food is less likely to move, there is no need to frequently adjust its position; simply holding the shredder and passing it over the food makes shredding convenient.

[0079] 3) Because the rotation direction of the motor shaft does not change during the linear reciprocating movement of the second blade 31, compared with some structures that realize linear reciprocating movement by reversing the motor, the food material will not change in stress due to the forward and reverse rotation of the motor, thereby ensuring the positional relationship between the food material, the first blade 22 and the second blade 31, and being more conducive to shredding. For example, if the motor of the present application is reversed, the first blade 22 is rotated to exert a downward force on the food material, and when the motor shaft is reversed, an upward force is exerted on the food material. At this time, if the shredder is not pressed with greater force, the shredding cannot be better or cannot be completed.

[0080] Although the beneficial effects are described by taking the handheld shredder as an example, the skilled person can understand that in the case of a food processor that is not a handheld shredder, it also has the aforementioned beneficial effects such as convenient shredding.

[0081] The structure of the linear reciprocating mechanism 4 is not limited, as long as it can realize the linear reciprocating movement of the second blade 31 under the drive of the motor 11. The following describes a linear reciprocating mechanism disclosed by the present application in combination with the drawings.

[0082] Please refer to Figure 9 and in combination with Figure 4 and Figure 3 , the linear reciprocating mechanism 4 includes a screw rod 41, a screw rod sleeve 42 and a moving piece 43 connected with the second blade 31. Please refer to Figure 9 and Figure 10 , the screw rod sleeve 42 is provided with a guide groove 421 parallel to the blade shaft 21. Please refer to Figure 3 and Figure 4 , the screw rod 41 is inserted into the screw rod sleeve 42, and the surface of the screw rod 41 is provided with a helical groove 411. The moving piece 43 is inserted into the helical groove 411; under the rotation of the motor, the moving piece 43 moves along the helical groove 411 and is guided by the guide groove 421 to realize the linear reciprocating movement. The following describes a structure of the helical groove 411.

[0083] Please refer to Figure 25 and in combination with Figure 10 to Figure 19 , the helical groove 411 includes a first segment 4111, an intermediate segment 4112 and a tail segment 4113 connected in sequence. The pitches of the intermediate segment 4112 are equal, the pitch of the first segment 4111 gradually increases from one end of the screw rod 41 to the intermediate segment 4112 until it is equal to the pitch of the intermediate segment 4112, and the pitch of the tail segment 4113 gradually decreases from the intermediate segment to the other end of the screw rod. Based on the above arrangement, please refer to Figure 25 , the movement principle of the moving piece 43 (in this embodiment, the guide rod 431 of the moving piece 43) in the helical groove 411 is as follows:

[0084] The movement of the guide rod 431 is always in the helical groove 411 of the screw rod 41, and the change in the curvature of the helical groove 411 will affect the translation speed of the guide rod 431; the constant translation speed of the guide rod 431 relative to the screw rod 41 is Vs; when the guide rod 431 is located at points a and c (a is the lowest point and c is the highest point), the movement speed of the guide rod 431 is zero; in the ad segment (i.e., the first segment 4111), the curve trajectory of the helical groove 411 changes from low curvature to high curvature, the speed direction of V0 changes and the speed gradually increases; at the d point, the speed reaches a maximum value, the de segment (i.e., the middle segment 4112, in order to distinguish from the first segment 4111 and the tail segment 4113, the middle segment 4112 is represented by a dashed line) moves at the maximum speed V0; in the ec segment (i.e., the tail segment 4113), the curve trajectory of the helical groove 411 changes from high curvature to low curvature, the speed gradually decreases to zero at the c point; such a cycle realizes: 1) when the second blade 31 starts to reciprocate, it needs to be started smoothly; 2) when the starting is completed, the second blade 31 can move quickly, which is convenient for cutting sheet-shaped food materials; 3) when the second blade 31 reciprocates to the other end, it needs to be decelerated smoothly to reduce the impact force and make the components run smoothly. Based on the above principle analysis, the skilled person can understand that the one end and the other end are relative concepts, and for the starting position of the reciprocating guide rod at one end and the termination position at the other end, further description is as follows in combination with the number of helical grooves.

[0085] As described above, since the pitch of the middle segment 4112 is equal, the pitch of the first segment 4111 gradually increases from one end of the screw rod 41 to the middle segment 4112 until it is equal to the pitch of the middle segment 4112, and the pitch of the tail segment 4113 gradually decreases from the middle segment to the other end of the screw rod 41. Therefore, the first segment 4111 realizes smooth acceleration, the middle segment 4112 realizes quick movement of the second blade 31, and the tail segment 4113 realizes smooth deceleration. Finally, the first segment 4111 can make the second blade 31 start to reciprocate smoothly, and after starting, it is accelerated smoothly, and then the middle segment 4112 makes the second blade 31 move quickly, which is convenient for cutting sheet-shaped food materials to obtain filamentous food materials, and the tail segment 4113 makes the second blade 31 decelerate smoothly to zero. Therefore, the overall operation of the second blade 31 is smooth, and the cutting efficiency is high.

[0086] Please refer to Figure 24 and combine Figure 11 to Figure 19 In the first screw rod 41, the second screw rod 41 and the third screw rod 41, the helical groove 411 satisfies at least one of the following conditions:

[0087] 1) The length of the first segment 4111 is 1 / 4 to 3 / 4 of the pitch of the middle segment 4112, and / or the length of the tail segment 4113 is 1 / 4 to 3 / 4 of the pitch of the middle segment 4112. As described above, the relatively long lengths of the first segment and the tail segment are more conducive to achieving the goal of smooth operation and high cutting efficiency of the second blade 31.

[0088] 2) The width of the spiral groove 411 is w, 2mm≤w≤10mm, for example, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm. The pitch of the spiral groove 411 is t, 3mm≤t≤50mm, for example, 3mm, 8mm, 10mm, 13mm, 15mm, 18mm, 20mm, 25mm, 30mm, 33mm, 35mm, 38mm, 40mm, 43mm, 45mm, 48mm or 50mm.

[0089] right Figure 24 The force analysis is performed as follows:

[0090] The input torque of screw 41 is equal to the product of the tangential force P acting on the mean diameter d2 and half the mean diameter of the screw;

[0091] Then we have:

[0092] Simplify the motion of the guide rod as follows: Figure 24 The motion of the guide rod 431 and the screw 41 can be regarded as the screw moving upward by a tangential force P at an angle of α, where α is the helix angle; Q is the screw thrust, N is the support force of the slide rail on the guide rod 431, f is the friction force of the screw 41; and R is the resultant force of N and f.

[0093] Force analysis shows that:

[0094] P = Q × tan(α + φ), where: tan(α) = S / π × S = K × t; where S is the lead of the screw, t is the screw pitch, and K is the number of screw threads;

[0095] D can be obtained from the above; where, the equivalent friction angle φ, from tanφ= f / N =μ / t, the value of tanφ can be obtained from the force; from the inverse trigonometric function, we know φ; the inclination angle (helix angle) of the spiral groove 411 is β=90°-θ;

[0096] The pressure on the guide rod inside the spiral groove 411 is T = N1 × μ;

[0097] The guide rod thrust is: Q = N × sin(β)

[0098] From the above two equations, we know that: T = Q × μ / sin(β)

[0099] Equivalent friction coefficient μ / t = μ / sin (α),

[0100] Introducing efficiency η = work done without friction / work done with friction = Q x tan (α) / Q x tan (α + φ) = tan (α) / tan (α + φ)

[0101] The above formula can be obtained: Torque M = Q x tan (α + φ) x d / 2 / 2 = Q x S / 2 x π x η

[0102] That is, M = (Q x S) / (2 x π x η); when the motor torque is fixed, the guide rod thrust is inversely proportional to the pitch of the screw rod. Based on this, when the motor torque is fixed, the larger the pitch, the greater the frictional resistance between the guide rod 431 and the screw rod 41, and the smaller the force in the horizontal moving direction of the guide rod (that is, the smaller the guide rod thrust); which will cause the motor speed to decrease or even be locked; the smaller the pitch, the smaller the frictional resistance between the guide rod 431 and the screw rod 41, and the motor speed is stable, the force in the horizontal moving direction of the guide rod is larger (that is, the guide rod thrust is larger); when the length of the screw rod is fixed, a narrower helical groove 411 can provide a smaller pitch, which is beneficial to the horizontal movement of the guide rod 431; however, the narrower helical groove 411 also makes the guide rod 431 smaller, which causes it to be unable to withstand a larger force and be damaged.

[0103] As set forth above, the width of the helical groove 411 of the screw rod is w, 2mm≤w≤10mm, and the pitch is t, 3mm≤t≤50mm, which can prevent the motor 11 from reducing speed or being locked, and the screw rod 41 is not easily damaged.

[0104] Please refer to Figure 8 , the moving part 43 (in this embodiment, the guide rod 431 of the moving part 43) is in linear contact with the inner surface of the helical groove 411.

[0105] As set forth above, since the screw rod 41 is inserted into the screw rod sleeve 42, and the screw rod 41 is provided with the helical groove 411, the screw rod sleeve 42 is provided with the guide groove 421, and the helical groove 411 spirals around the axial direction of the screw rod 41, so that the side wall of the helical groove 411 is smoothly transitioned. This smooth transition, combined with the insertion of the screw rod 41 into the screw rod sleeve 42, the limiting of the moving part 43 by the guide groove 421, and the linear contact between the moving part 43 and the helical groove 411, results in less friction between the moving part 43 and the helical groove 411, less wear, and thus smoother operation of the moving part 43 in the helical groove 411, better cutting effect, for example, to reduce the impact force when the second blade 31 moves to the other end and move smoothly.

[0106] Please continue to refer to Figure 8 , the bottom of the helical groove 411 is in contact with the bottom of the moving part 43 (in this embodiment, the bottom of the guide rod 431) and is arc-shaped.

[0107] As set forth above, the arc shape can guide the guide rod 431 (which can be considered as the moving part 43) at the intersection of the helical grooves 411, and thus the guide rod 431 (the moving part 43) runs smoothly, and finally the second blade 31 runs smoothly, facilitating the cutting of food materials.

[0108] Please refer to Figure 11 to Figure 19 , the ratio of the rotating speed of the motor 11 to the reciprocating times of the second blade 31 is 1:1~3:1; in Figure 14 、 Figure 15 and Figure 16 , the ratio of the rotating speed of the motor 11 to the reciprocating times of the second blade 31 is set to 3:1; that is, the screw rod 41 rotates three times, and the guide rod 431 performs one reciprocating cycle. In Figure 17 、 Figure 18 and Figure 19 , the ratio of the rotating speed of the motor 11 to the reciprocating times of the second blade 31 is set to 1:1; that is, the screw rod 41 rotates one time, and the guide rod 431 performs one reciprocating cycle. In summary, when the diameter of the screw rod is fixed, changing the pitch of the helical groove 411 can change the horizontal moving speed of the second blade 31, and improve the efficiency of cutting.

[0109] As set forth above, since the ratio of the rotating speed of the motor 11 to the reciprocating times of the second blade 31 is 1:1~3:1, the load of the motor 11 is small, the resistance to cutting food materials is small, and the moving part 43 (the guide rod 431 in this embodiment) is also not easy to be stuck, ensuring the smooth movement of the second blade 31. Because, if the ratio is less than 1:1, the torque of the motor 11 will be larger, and thus the load of the motor 11 is large, and the resistance to cutting food materials is large; if the ratio is greater than 3:1, the part between the helical grooves on the screw rod 41 is small, and cannot provide sufficient guidance for the movement of the guide rod 431, and the guide rod 431 is easy to be stuck.

[0110] Please refer to Figure 13 and in combination with Figure 7 and Figure 3 , the linear motion distance of the second blade 31 is S, and 15mm≤S≤35mm, such as 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm or 35mm.

[0111] As set forth above, when the moving distance S is less than 15 mm, the food material (such as meat) swings with the second blade 31 and cannot cut the food material; when the moving distance S is greater than 35 mm, the product volume increases and more virtual space is generated, so that the volume of the shredding machine is large (especially for a handheld shredding machine, the volume is large); in summary, 15 mm≤S≤35 mm not only can cut the food material well, but also effectively utilizes the space and the volume of the shredding machine is small.

[0112] Please refer to Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 , the aforementioned linear reciprocating mechanism 4 adopts a second screw 41 as shown in Figure 14 to Figure 16 , Figure 11 to Figure 13 schematically shows a first screw 41 that can be used in the present application. The first screw 41 and the second screw 41 both include two spiral grooves 411, and the difference between the two spiral grooves 411 is that the pitches of the spiral grooves 411 are different. Other structures are the same, and in Figure 11 to Figure 16 , the spiral grooves 411 are two, and the two spiral grooves 411 intersect and communicate with each other, and each spiral groove 411 spirals around the axis of the screw 41 from one end of the screw 41 to the other end. In the case where the spiral grooves 411 are two, the pitch of the first section of the first spiral groove gradually increases from one end of the screw to the middle section, and the pitch of the tail section decreases from the middle section to the other end. If the “one end” at this time is named as the first end of the screw, and the “other end” is named as the second end of the screw, and the guide rod realizes reciprocation through the two spiral grooves, then for the second spiral groove, the pitch of the first section gradually increases from one end of the screw (at this time, it is the second end of the screw) to the middle section, and the pitch of the tail section decreases from the middle section to the other end (at this time, it should be the first end).

[0113] As set forth above, since the spiral grooves 411 are two and intersect each other, and each spiral groove 411 spirals around the axis of the screw 41 from one end of the screw 41 to the other end, the included angle between the spiral groove 411 and the axis of the screw 41 will not be too large, which can ensure smooth movement of the moving part 43, for example, the moving part 43 will not be stuck.

[0114] Please refer to Figure 17 , Figure 18 and Figure 19 , the third screw 41 is different from the first screw 41 and the second screw 41 in that the spiral groove 411 is only one, specifically, the spiral groove 411 is only one and spirals around the axis of the screw 41 to form a ring, in this case, the spiral groove 411 can be considered as a spiral groove connected by two spiral grooves to form a ring.

[0115] As set forth above, since the helical groove 411 is only one, and is annular around the axis of the screw rod 41 by one turn, the angle between the helical groove 411 and the axis of the screw rod 41 is not too large, and the movement of the moving part 43 is smooth, for example, the moving part 43 will not be stuck.

[0116] Please refer to Figure 4 and Figure 3 , the driving device 1 further comprises a gear box 12, the input end of the gear box 12 is connected with the motor shaft, and the output end 121 of the gear box 12 is inserted with the screw rod 41 through a flat bit structure and is fixed with each other through a fixing part. In the embodiment of the present application, please refer to Figure 6 , Figure 11 , Figure 12 , Figure 14 and Figure 18 , the end of the screw rod 41 is provided with a plug column 412, which is polygonal in cross section perpendicular to the axial direction of the screw rod 41. Please refer to Figure 4 and Figure 3 , the output end of the gear box 12 is provided with a plug hole 122 matched with the plug column 412, that is, the cross section of the plug hole is polygonal, and the plug column 412 and the plug hole 122 constitute the flat bit structure. Of course, the flat bit structure is not limited to this. Please refer to Figure 4 and Figure 7 , the fixing part can be a screw, which is inserted through the first through hole 120 of the gear box 12 and the second screw hole 410 recessed in the interior of the screw rod 41, so as to fix the output end of the gear box 12 and the screw rod 41 with each other through the fixing part.

[0117] As set forth above, since the output end of the gear box 12 is inserted with the screw rod 41 through the flat bit structure, and the gear box 12 and the screw rod 41 are further fixed with each other through the fixing part, the screw rod 41 and the output end of the gear box 12 are fixed as a whole, which is beneficial to transmit larger torque and is more convenient for the first blade 22 and the second blade 31 to cooperate to cut the food into filaments.

[0118] Please refer to Figure 22 and Figure 23 in combination with Figure 7 , Figure 6 , Figure 3 and Figure 2 , the second knife assembly 3 comprises a knife cover 32, a first sliding part 33 and a second sliding part 34. The knife cover 32 is provided with a sliding channel 321 parallel to the guide groove 421. Please refer to Figure 6 and Figure 7 , the first sliding part 33 and the second sliding part 34 are connected with the second blade 31 and are spaced apart, and are located in the sliding channel 321, for example, Figure 7As shown, the first sliding member 33 is also connected with the moving member 43. In the embodiments of the present application, the first sliding member 33 is connected with the clutch 432, as described later. Referring to Figure 7 and Figure 23 Under the action of the linear reciprocating mechanism 4, the first sliding member 33 and the second sliding member 34 are both moved in the slide way 321, so that the second blade 31 moves linearly.

[0119] As described above, since the slide way 321 is parallel to the guide slot 421, the first sliding member 33 and the second sliding member 34 move linearly in the slide way 321 under the action of the linear reciprocating mechanism 4, and the slide way 321 limits the first sliding member 33 and the second sliding member 34, and in addition, the moving member 43 of the linear reciprocating mechanism 4 moves linearly along the guide slot 421, so that the second blade 31 moves more stably.

[0120] Referring to Figure 20 and Figure 21 , the first sliding member 33 and the second sliding member 34 are detachably located in the slide way 321.

[0121] As described above, since the first sliding member 33 and the second sliding member 34 are detachably located in the slide way 321, the first sliding member 33, the second sliding member 34 and the second blade 31 can be detached from the cover 32, which is convenient for cleaning and assembling after cleaning.

[0122] Referring to Figure 6 , Figure 7 , Figure 9 and Figure 10 and in combination with Figure 2 , the moving member 43 includes a guide rod 431 and a clutch 432 connected with the guide rod 431. The guide rod 431 can rotate relative to the clutch 432 and is inserted into the helical slot 411. The guide rod 431 can be connected with the clutch 432 in various structures, such as bearings, etc. In the embodiments of the present application, the guide rod 431 and the clutch 432 are inserted to achieve rotatable connection. In other embodiments, the guide rod 431 is not inserted into the guide slot 421, but the clutch 432 is inserted into the guide slot 421. Whether the clutch 432 is inserted into the guide slot 421 or the guide rod 431 is inserted into the guide slot 421, the clutch 432 is connected with the second blade 31, and how to connect is not limited to the connection of the clutch 432 with the second blade 31 through the first sliding member 33 as described later.

[0123] As set forth above, the movement of the guide rod 431 includes the combination of rotation and linear movement, and since the guide rod 431 is rotationally connected with the clutch 432, rotation of the guide rod 431 does not cause rotation of the clutch 432, etc., and ultimately ensures smooth and smooth operation of the moving part 43.

[0124] Please refer to Figure 6 , Figure 10 , Figure 11 , Figure 14 , Figure 17 and Figure 18 , the screw rod 41 is provided with a tail end boss 413 away from the motor 11. In the embodiment of the application, the tail end boss 413 is one circle around the tail end of the screw rod 41, but based on the role of the tail end boss 413 described later, the tail end boss 413 can also be not one circle, but spaced apart at the tail end of the screw rod 41. Please refer to Figure 4 , the tail end boss 413 is in contact with the inner surface 422 of the screw rod sleeve 42, and there is a gap between the screw rod 41 and the inner surface 422 of the screw rod sleeve 42.

[0125] As set forth above, since the tail end boss 413 is in contact with the inner surface 422 of the screw rod sleeve 42, and there is a gap between the screw rod 41 and the inner surface 422 of the screw rod sleeve 42, after the screw rod 41 is inserted into the screw rod sleeve 42, the contact area between the screw rod 41 and the screw rod sleeve 42 is small, reducing wear and tear, improving the service life of the screw rod sleeve 42 and the screw rod 41. Furthermore, because the contact area is small, the wear can be reduced, and compared with a larger contact area, the screw rod 41 moves faster, so that the first blade 22 and the second blade 31 can move faster, thereby improving efficiency.

[0126] Please refer to Figure 1 , Figure 2 and Figure 3 in combination with Figure 22 and Figure 23 , the shredding machine is a handheld shredding machine, of course, even if the shredding machine is not a handheld shredding machine, the assembly method described later can be used. The second knife assembly 3 includes a knife cover 32. The second blade 31 is assembled with the knife cover 32. The knife cover 32 includes a knife cover middle part 322 and two knife cover end parts 323 respectively located at both ends of the knife cover middle part 322, the knife cover middle part 322 is provided with a through hole 3221 for food to pass through, and the knife cover middle part 322 and the two knife cover end parts 323 form a shredding gap 324. The second blade 31 passes through the two knife cover end parts 323 and moves linearly in the shredding gap 324.

[0127] Please refer to Figure 1 , Figure 2 and Figure 3The cutter includes an assembling shell 5 provided with a receiving gap. The cutter cover 32 is assembled with the assembling shell 5, and the two cutter cover ends 323 are respectively abutted against the two side walls 511 of the receiving gap. The structure of the assembling shell 5 is not limited, and the part for mounting the second cutter assembly 3 or assembled with the cutter cover 32 can be an assembly or a single part. Of course, for the cutter, the cutter shell can be assembled by the cutter cover 32 and the assembling shell 5 as shown in the figure, or the cutter shell further includes other parts in addition to the cutter cover 32 and the assembling shell 5. Please refer to Figure 1 、 Figure 2 and Figure 2 In the embodiments of the present application, the assembling shell 5 includes a left shell 51, a right shell 52 and an end cover 53, which are assembled to form the receiving gap, and the left shell 51 corresponds to one of the cutter cover ends 323 as one of the side walls 511 of the receiving gap, and the end cover 53 corresponds to the other cutter cover end 323 as the other side wall 511 of the receiving gap.

[0128] As described above, since the assembling shell 5 is provided with the receiving gap, the cutter cover 32 is assembled in the receiving gap, the two cutter cover ends 323 are respectively abutted against the two side walls 511 of the receiving gap, the cutter cover middle part 322 is provided with a through hole 3221 for the food material (such as a sheet-shaped food material) to pass through, and in addition, the second cutter blade 31 further linearly reciprocates in the cutter gap 324 through the two cutter cover ends 323. In this way, the food material passing out of the through hole 3221 can be cut into a filamentous food material by the second cutter blade 31, and the cutting is more convenient. In addition, through the abutment of the side wall 511 and the cutter cover end 323, and the assembly of the cutter cover 32 and the assembling shell 5, the second cutter assembly 3 will not be loose during the working process, so that the second cutter blade 31 moves more stably. For example, when the slide 321 is provided on the cutter cover 32, the second cutter blade 31 can stably and smoothly run in the slide 321.

[0129] Please refer to Figure 22 and Figure 23 The cutter cover middle part 322 and the bottom of the receiving gap are assembled through the buckle structure 6 to realize the detachable assembly of the second cutter assembly 3 and the assembling shell 5. In the embodiments of the present application, please refer to Figure 2 、 Figure 2 and Figure 5 The cutter cover middle part 322 is provided with a clamping block 3222, please refer to Figure 3The assembling shell 5 (right shell 52 in this embodiment) is provided with a clamping hole 521. The clamping hole 521 and the clamping block 3222 constitute the clamping structure 6. Of course, the assembling shell 5 can be provided with the clamping block 3222, and the cutter cover middle part 322 can be provided with the clamping hole 521. In other embodiments, the clamping structure 6 is not limited to the above structure.

[0130] As described above, since the second cutter blade 31 is assembled with the cutter cover 32, and the cutter cover middle part 322 and the bottom of the accommodating gap are assembled through the clamping structure 6, the second cutter assembly 3 is detachably assembled with the assembling shell 5, so that the second cutter assembly 3 can be detached for cleaning. In the case that the second cutter blade 31 is linearly reciprocated in the slide way 321 through the first sliding member 33 and the second sliding member 34, the second cutter blade 31 is detachable with the cutter cover 32, which facilitates cleaning of the parts of the second cutter assembly 3. In the case that the first cutter assembly cuts food materials into slices, and the second cutter assembly cuts the sliced food materials into filamentous food materials, after the second cutter assembly is detached, only the slicing function can be realized.

[0131] Please refer to Figure 20 and Figure 21 in combination with Figure 2 , the filament cutter comprises a right shell 52 and an end cover 53. The first cutter assembly 2 further comprises a bearing seat 23 and a bearing 24 fixed to the bearing seat 23. One end of the cutter shaft 21 is tightly fitted with the bearing 24, and the other end of the cutter shaft 21 is detachably connected with the screw rod 41 (i.e., detachably connected with the linear reciprocating mechanism 4). There are various structures for detachable connection. In this embodiment, please refer to Figure 3 , Figure 4 in combination with Figure 10 , the other end of the cutter shaft 21 is polygonal in cross section, please refer to Figure 20 and Figure 21 , the screw rod 41 is provided with a matching structure matched with the polygonal shape, so that the other end of the cutter shaft 21 is detachably assembled with the screw rod 41 (linear reciprocating mechanism 4) through the flat structure. The bearing seat 23 is detachably connected with the right shell 52, and the structure for detachable connection is not limited to the structure described below. The end cover 53 is inserted with the bearing seat 23 through a limiting structure to realize detachable assembly, and in the assembled state, the end cover 53 and the bearing seat 23 are fixed to each other in the circumferential direction and the axial direction of the bearing seat 23. There are various structures for realizing the mutual fixation in the circumferential direction and the axial direction, as long as the first cutter assembly can be detachable and the first cutter assembly can safely and reliably operate.

[0132] As set forth above, since the end cover 53 and the bearing seat 23 are inserted by the limiting structure to realize the disassembly and assembly, and in the assembled state, the end cover and the bearing seat 23 are fixed to each other in the circumferential direction and the axial direction of the bearing seat 23, the end cover 53 is pulled out from the bearing seat 23, the bearing seat 23 is disassembled from the right shell 52, and the other end of the cutter shaft 21 is pulled out from the screw rod 41, so that the first cutter assembly 2 can be disassembled. Of course, the assembly process is opposite to the above process, so that the first cutter assembly 2 can be disassembled, which is convenient for cleaning the first cutter assembly 2 and assembling the first cutter assembly 2 after cleaning.

[0133] As follows, in combination with Figure 2 , Figure 20 , Figure 21 and Figure 2 , a structure for realizing the mutual fixation in the circumferential direction and the axial direction is described.

[0134] The end cover 53 and the bearing seat 23 are inserted by the limiting structure to realize that the bearing seat 23 cannot rotate in the circumferential direction, as shown in Figure 3 and Figure 5 in combination with Figure 5 , a structure for realizing the insertion of the limiting structure is described: the surface of the bearing seat 23 is provided with a matching part 231, which is the limiting structure on the bearing seat 23. Correspondingly, the end cover 53 is provided with a matching limiting part 531 matched with the matching part 231, as shown in Figure 20 and Figure 21 , the end cover 53 and the bearing seat 23 are inserted by the matching part 231 and the matching limiting part 531. Of course, the limiting structure is not limited to the matching part 231 and the matching limiting part 531. In the embodiment of the present application, after the end cover 53 and the bearing seat 23 are inserted, the bearing seat 23 cannot rotate in the circumferential direction.

[0135] As follows, as shown in Figure 20 in combination with Figure 21 and Figure 2 , a structure for limiting the circumferential rotation or axial movement of the end cover 53 and the bearing seat 23 is described: one of the inner part of the end cover 53 and the outer surface of the bearing seat 23 is provided with a groove 232, and the other is provided with a protrusion 532, the protrusion 532 is located in the groove 232, so as to fix the end cover 53 and the bearing seat 23 to each other in the circumferential direction and the axial direction of the bearing seat 23.

[0136] Continuing to refer to Figure 20 and Figure 21The first cutter assembly 2 comprises the cutter shaft 21, the first cutter blade 22, the bearing seat 23 and the bearing 24, and further comprises the partition 25 for separating the adjacent first cutter blades 22 to keep the first cutter blades 22 apart on the cutter shaft 21 and the nut 26 for preventing the endmost partition 25 from falling off. That is, in the embodiment of the present application, the first cutter assembly 2 is in the form of an assembly (or a unit).

[0137] As arranged above, the flat structure is mainly used to prevent the end cover 53 from rotating relative to the bearing seat 23 in the circumferential direction, and the protrusion 532 and the groove 232 are mainly used to prevent the end cover 53 from moving in the axial direction (of course, they can also prevent the relative rotation in the circumferential direction). Thus, the flat structure, the protrusion 532 and the groove 232 in combination only need to be inserted or pulled out to realize the assembly of the first cutter assembly 2, which is convenient. After the assembly, the flat structure, the protrusion 532 and the groove 232 jointly limit and can also ensure the safe and reliable operation of the first cutter assembly 2.

[0138] Please refer to Figure 2 , Figure 3 and Figure 1 . The right shell 52 and the bearing seat 23 are detachably connected by screwing and buckling. Specifically, in the embodiment of the present application, the shredding machine comprises a bracket 54. The bracket 54 is fixed to the right shell 52, and of course, in some embodiments, the bracket 54 and the right shell 52 can be integrally formed. The bearing seat 23 is provided with a boss 233 and a locking block 234 spaced from the boss 233, and the bracket 54 is provided with a cooperating buckle. By rotating the bearing seat 23, the cooperating buckle is clamped between the locking block 234 and the boss 233 to realize the assembly of the bearing seat 23 and the right shell 52, and of course, the bearing seat 23 can be detached by rotating it in the opposite direction.

[0139] As arranged above, the bearing seat 23 and the right shell 52 are relatively fixed by rotating the bearing seat 23, and then the bearing seat 23 is fixed by the end cover 53. Thus, the first cutter assembly 2 is convenient to disassemble and assemble, and can also ensure the safe and reliable operation of the first cutter assembly 2.

[0140] Please refer to Figure 1 and Figure 3 in combination with Figure 2 . The left shell 51 and the right shell 52 form a cavity for accommodating the driving device 1. In the axial direction of the motor shaft, the left shell 51 is shorter than the right shell 52; the left shell 51, the right shell 52 and the end cover 53 enclose an accommodation gap. Please refer to Figure 7 and Figure 1, the second knife assembly 3 is assembled with the right shell 52, located in the accommodating gap and abuts against the left shell 51, the second knife assembly 3 also abuts against the end cover 53 and the knife cover 32 of the second knife assembly is slidingly assembled with the end cover 53. The sliding assembly structure is not limited, such as being provided with a sliding rail structure to realize sliding assembly. Figure 22 The sliding rail structure is schematically shown in FIG. 5, which includes a sliding groove 3232 provided on the knife cover end 323 of the knife cover 32.

[0141] As described above, by means of the sliding assembly, the end cover 53 and the bearing seat 23 are fixed, and then the first knife assembly 2 is fixed. After the end cover 53 is assembled, the second knife assembly 3 is located in the accommodating gap and abuts against the end cover 53 and the left shell 51 to fix the second knife assembly 3. After the end cover 53 is disassembled, the second knife assembly 3 and the first knife assembly 2 can be disassembled, which facilitates disassembly of the second knife assembly 3 and the first knife assembly 2.

[0142] The shredding machine satisfies at least one of the following conditions:

[0143] 1) Please refer to Figure 23 and Figure 1 , the shredding machine is a handheld shredding machine, which includes a handle accommodating the driving device 1. The structure of the handle is not limited, and in the embodiment of the present application, the handle is composed of a part of the left shell 51 and the right shell 52. With reference to the handle, the second knife assembly is located at the rear of the first knife assembly, and the motor 11 rotates counterclockwise, the direction of rotation being indicated as R1 in the figure. As described above, since the second knife assembly 3 is located at the rear of the first knife assembly 2 and the motor 11 rotates counterclockwise, it is beneficial for the sheet-shaped food material (such as meat slices) to move towards the second knife assembly 3 and be cut by the second knife blade 31. In addition, by using the above structure, since the first knife assembly and the second knife assembly are arranged side by side, and the driving device is accommodated in the handle, the handheld shredding machine has a small volume and light weight, is easy to store and carry. In some cases, the motor 11 can also rotate clockwise. In another embodiment, the handle can not accommodate the driving device.

[0144] 2) Please refer to Figure 2 and ​ and ​ and ​ , the cutting edge 311 of the second knife blade 31 is located on one side of the first knife assembly 2. That is, the cutting edge 311 is not opposite to the first knife assembly 2. As described above, since the cutting edge 311 of the second knife blade 31 is located on one side of the first knife assembly 2, it is more beneficial to cut the sheet-shaped food material into a filamentous shape. If the cutting edge 311 is opposite to the first knife assembly 2, the accumulated sheet-shaped food material will lift the shredding machine, which is not conducive to cutting the sheet-shaped food material into a filamentous shape.

[0145] The above description is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A shredder, characterized in that, The shredder includes: The drive unit (1) includes a motor (11); The first blade assembly (2) includes a blade shaft (21) and a plurality of first blades (22) spaced apart from the blade shaft (21). The blade shaft (21) is connected to the motor shaft of the motor (11) and is driven by the motor (11). The blade shaft (21) drives the first blades (22) to rotate. The second blade assembly (3) is arranged side by side with the first blade assembly (2) and includes a second blade (31). The second blade (31) is connected to the motor shaft through a linear reciprocating mechanism (4) and is driven by the motor (11) to reciprocate linearly on the side of the first blade assembly (2). The first blade assembly and the second blade assembly cooperate to process the food into shredded food. The movement direction of the second blade (31) is parallel to the axial direction of the blade shaft (21), and the rotation direction of the motor shaft remains unchanged during the linear reciprocating motion. The ratio of the rotational speed of the motor (11) to the reciprocating frequency of the second blade (31) is 1:1 to 3:1; The linear reciprocating mechanism (4) includes a screw (41), a screw sleeve (42), and a moving component (43) connected to the second blade (31), wherein, The screw sleeve (42) is provided with a guide groove (421) parallel to the cutter shaft (21). The screw (41) is inserted into the screw sleeve (42). The surface of the screw (41) is provided with a spiral groove (411). The spiral groove (411) includes a first section (4111), a middle section (4112), and a tail section (4113) connected in sequence. The pitch of the middle section (4112) is equal. The pitch of the first section (4111) gradually increases from one end of the screw to the middle section (4112) until it is equal to the pitch of the middle section (4112). The pitch of the tail section (4113) gradually decreases from the middle section (4112) to the other end of the screw. The moving part (43) is inserted into the spiral groove (411); when the motor (11) rotates, the moving part (43) moves along the spiral groove (411) and is guided by the guide groove (421) to achieve the linear reciprocating motion.

2. The shredder according to claim 1, characterized in that, The shredder satisfies at least one of the following conditions: 1) The shredder is a handheld shredder, including a handle; 2) The shredder is a handheld shredder, including a handle that houses the drive device (1); 2) The cutting edge (311) of the second blade (31) is located on the side close to the first blade assembly.

3. The shredder according to claim 1, characterized in that, The distance of the linear motion of the second blade (31) is S, 15mm≤S≤35mm.

4. The shredder according to claim 1, characterized in that, The spiral groove (411) satisfies at least one of the following conditions: 1) The length of the first segment (4111) is 1 / 4 to 3 / 4 of the pitch of the middle segment (4112), and / or the length of the tail segment (4113) is 1 / 4 to 3 / 4 of the pitch of the middle segment (4112). 2) The width of the spiral groove (411) is w, 2mm≤w≤10mm; the pitch of the spiral groove (411) is t, 3mm≤t≤50mm.

5. The shredder according to claim 1, characterized in that, The moving part (43) is in line contact with the inner surface of the spiral groove (411); and / or, the bottom of the spiral groove (411) is in contact with the bottom of the moving part (43) and both are arc-shaped.

6. The shredder according to claim 1, characterized in that, There are two spiral grooves (411), and the two spiral grooves intersect and are connected. Each spiral groove (411) spirals around the axis of the screw (41) from one end of the screw (41) to the other end of the screw (41). Alternatively, there may be only one spiral groove (411), which spirals around the axis of the screw (41) in a ring shape.

7. The shredder according to claim 1, characterized in that, The drive device (1) also includes a gearbox (12), the input end of which is connected to the motor shaft, and the output end of which is inserted into the screw (41) through a flat structure and fixed to each other by a fastener.

8. The shredder according to claim 1, characterized in that, The second blade assembly (3) includes a blade cover (32), a first sliding member (33), and a second sliding member (34). The blade cover (32) is provided with a slide (321) parallel to the guide groove (421). The first slider (33) and the second slider (34) are connected to the second blade (31) and spaced apart, both located in the slide rail (321). The first slider (33) is also connected to the moving part (43). Under the action of the linear reciprocating mechanism (4), the first slider (33) and the second slider (34) move in the slide rail (321) so that the second blade (31) moves linearly.

9. The shredder according to claim 8, characterized in that, The first slider (33) and the second slider (34) are detachably located within the slide (321).

10. The shredder according to claim 1, characterized in that, The moving part (43) includes a guide rod (431) and a clutch (432) connected to the guide rod (431). The guide rod (431) is rotatable relative to the clutch (432) and is inserted into the helical groove (411). The clutch (432) or the guide rod (431) is inserted into the guide groove (421). The clutch (432) is also connected to the second blade (31).

11. The shredder according to claim 1, characterized in that, The screw (41) includes a tail end boss (413) away from the motor (11); the tail end boss (413) contacts the inner surface of the screw sleeve (42), and there is a gap between the screw (41) and the inner surface of the screw sleeve (42).

12. The shredder according to claim 1, characterized in that, The second blade assembly (3) includes a blade cover (32), and the second blade (31) is assembled with the blade cover (32). The blade cover (32) includes a middle part (322) and two blade end parts (323) located at both ends of the middle part (322). The middle part (322) of the blade cover is provided with a plurality of through holes (3221) for food to pass through, and forms a slicing notch (324) with the two blade end parts (323). The second blade (31) passes through the two blade end parts (323) and moves linearly back and forth in the slicing notch (324). The shredder includes an assembly shell (5) with a receiving notch; the blade cover (32) is assembled with the assembly shell (5), and the two ends (323) of the blade cover abut against the two side walls (511) of the receiving notch respectively.

13. The shredder according to claim 12, characterized in that, The middle part (322) of the blade cover and the bottom of the receiving notch are assembled by a snap-fit ​​structure (6) to realize the detachable assembly of the second blade assembly (3) and the assembly shell (5).

14. The shredder according to claim 1, characterized in that, The shredder includes a right shell (52) and an end cap (53). The first blade assembly (2) also includes a bearing seat (23) and a bearing (24) fixed to the bearing seat (23). One end of the blade shaft (21) is tightly fitted with the bearing (24), and the other end of the blade shaft (21) is detachably connected to the linear reciprocating mechanism (4). The bearing housing (23) is detachably connected to the right shell (52); the end cap (53) and the bearing housing (23) are inserted into each other through a limiting structure to achieve disassembly and assembly, and in the assembled state, the end cap (53) and the bearing housing (23) are fixed to each other in the circumferential and axial directions of the bearing housing (23).

15. The shredder according to claim 14, characterized in that, The end cap (53) and the bearing seat (23) are inserted into each other through a flat structure. The end cap (53) has a groove (232) on one of its interior and the bearing seat (23) on its outer surface, and the other has a protrusion (532) on the other. The protrusion (532) is located in the groove (232). The limiting structure includes the flat structure, the protrusion (532) and the groove (232). And / or, the bearing housing (23) and the right shell (52) are detachably connected by a screw thread.

16. The shredder according to claim 14, characterized in that, The shredder also includes a left shell (51), which, together with the right shell (52), forms a cavity for accommodating the drive device (1); Along the axial direction of the motor shaft, the left housing (51) is shorter than the right housing (52), and the left housing (51), the right housing (52) and the end cap (53) form a receiving notch; The second blade assembly (3) is assembled with the right shell (52), located in the receiving notch and abutting against the left shell (51). The second blade assembly (3) also abuts against the end cap (53), and the blade cover (32) of the second blade assembly is slidably assembled with the end cap (53).

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