Double-cutter-group reversing device and meat cutter comprising same

Abstract

According to the double-cutter-set reversing device and the meat cutter comprising the same, the double-cutter-set reversing device drives the two cutter sets which are vertically and crosswise stacked to rotate and cut at the same time through a single power source, and the vertical height difference and the horizontal position difference between driven wheels of the two cutter sets and the angle difference formed by cutter shaft crossing can be compensated through the structural design of the double-cutter-set reversing device. The meat cutting machine is based on the same reversing device core design and has two implementation modes: a commercial type adopts a quick-release separation type knife group and a meat grinder head adaptive structure, is compatible with various types of meat grinder heads, and switches driving modes through a clutch device so as to meet diversified meat processing requirements; a fixed cutter set and a waterproof pure mechanical transmission structure are adopted for household use, a hand crank is configured to serve as a driving device, the whole machine is allowed to be directly flushed and soaked, and the problems of cleaning and space occupation in a small kitchen scene are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing machinery, and particularly relates to a double-knife group commutation device and a meat slicer including this device. Background Art

[0002] In the field of existing meat processing equipment, a meat slicer for slicing meat products into shreds is an indispensable processing machine. Traditional double-knife group meat slicers usually use two independent motors to drive two groups of knife shafts respectively. For example, in the prior art, a double-knife group meat slice shredding machine disclosed in Chinese Patent CN209111221U has significant defects in this double-motor drive mode: on the one hand, the configuration of two motors results in a large volume of the equipment, occupying a large amount of working space, and it is difficult to be flexibly arranged in scenarios with limited space such as kitchens and small processing workshops; on the other hand, the separate drive of two motors causes excessive power and wastes energy.

[0003] In addition, traditional single-knife group meat slicers have relatively single functions and can only achieve basic slicing functions. To shred the meat, it needs to be sliced twice, and it is difficult to expand other processing requirements. Even if some equipment has a meat grinding function, the adaptability of its meat grinding head is poor, and it cannot be compatible with meat grinding heads of different models, making it difficult to meet diverse meat processing scenarios.

[0004] In terms of structural design, the installation and disassembly process of the knife group of existing meat slicers is cumbersome, and some even require tools to complete, which is time-consuming and laborious.

[0005] Object of the Invention Provide a double-knife group commutation device and a meat slicer including this device, and achieve a technological breakthrough through the following innovations: Three-dimensional difference compensation: Connect the lower and upper knife group driven wheels through the double-knife group commutation device to compensate for the differences in the horizontal position, vertical height, and knife shaft angle of the two knife group driven wheels, ensuring stable power transmission; Single power source drive: Use the double-knife group commutation device to simultaneously transmit a single driving force to the upper and lower knife groups, solving the problems of large volume and high energy consumption of double motors; Scene adaptation: Design quick-release (commercial) and fixed water-resistant (household) structures for commercial and household needs, taking into account function expansion and cleaning convenience, and achieving one-time shredding and diverse processing. Technical Solution

[0006] I. Double-knife group commutation device It includes a lower first knife group and an upper second knife group stacked up and down, and the knife shafts of the two knife groups intersect in the horizontal plane projection. The driven wheels of the knife group form an L-shaped stepped structure, with differences in horizontal position, vertical height, and the angle difference formed by the intersection of the knife shafts.

[0007] The double-knife group commutation device adopts various design schemes: First, based on the bevel gear assembly and the transmission shaft assembly, the orthogonal meshing transmission between bevel gears is used to compensate for the angular difference, and the transmission shaft compensates for the position difference and height difference through reasonable layout and structural design to ensure the effective transmission of power between different directions and heights; Second, with the help of the upper and lower worm wheels and the worm with two coaxial upper and lower spiral teeth, through the multi-stage transmission method, the spatial position difference, angular difference and height difference are compensated in turn. The special tooth profile matching between the worm wheel and the worm realizes the stable transmission of power in the complex space structure; Third, a hybrid transmission structure of chain, sprocket, bevel gear and transmission shaft is adopted. The bevel gear on the cutter shaft of the lower cutter group is orthogonally meshed with the transmission shaft to compensate for the angular difference; the sprocket fixed at the other end of the transmission shaft and the sprocket on the cutter shaft of the upper cutter group compensate for the height difference and position difference through chain transmission. This hybrid transmission structure combines the advantages of different transmission methods; Fourth, a bevel gear set structure is adopted, which is fixed between the height differences of the two cutter group gears. By designing the gear layout, the compensation in three-dimensional directions is disassembled into angular compensations in two orthogonal directions, effectively simplifying the transmission structure and improving the transmission efficiency.

[0008] These designs can accurately compensate for the position of the driven wheels of the two cutter groups in the horizontal direction and the height difference in the vertical direction, and at the same time compensate for the angular difference generated by the intersection of the cutter shafts through angle conversion, ensuring that the single driving force of the driving device can be efficiently transmitted to the two cutter groups to realize the simultaneous rotation and cutting of the two cutter groups.

[0009] II. Meat slicer containing this device Common characteristics The cutter group chamber accommodates the double cutter group commutation device. The driving device (motor or hand crank) only needs to be connected to the driven wheel of the cutter group or the commutation device, and the two cutter groups can be simultaneously driven through the internal transmission components.

[0010] Implementation methods for different scenarios.

[0011] Commercial type The upper and lower end faces of the cutter group housing are flat, provided with guide holes and guide posts for cooperation to achieve accurate positioning and sliding restriction during cross-stacking. The housing is provided with a U-shaped foldable handle that does not affect stacking after folding; Quick-release structure: The cutter group housing can be separated and quickly locked or disassembled through the wing nuts on the upper cover plate, supporting quick disassembly, assembly and cleaning by hand; Function expansion: The gearbox integrates the transmission shaft of the meat grinder (axial four-square hole with a slidable screw nut locking device), compatible with 12-type, 22-type, and 32-type meat grinder heads; the meat slicing / meat grinding drive mode is switched through a jaw clutch device to realize power distribution and independent function control.

[0012] Household type Fixed water-resistant structure: The knife set and the commutation device are integrally fixed in the knife set chamber, driven by a hand-crank, and only contain water-resistant mechanical components (blades, gears), allowing the whole machine to be directly rinsed with water, solving the problems of small kitchen cleaning and space occupation. Beneficial effects

[0013] High efficiency and energy saving: A single power source replaces the dual motors, significantly reducing energy consumption and the volume of the equipment. At the same time, it drives the two knife sets to achieve one-time shredding, improving the processing efficiency.

[0014] Space optimization: The compact layout of the commutation device for the two knife sets reduces the volume of the equipment, adapts to narrow spaces, and meets the needs of kitchens and small processing scenarios.

[0015] Diverse functions: The commercial type can freely expand the functions of cutting meat and mincing meat by adapting the meat mincing head and switching the clutch; the household type has a pure mechanical transmission design, without electricity, and adapts to diverse usage environments.

[0016] Stable and reliable: Multiple transmission schemes (gears, worm gears and worm wheels, sprocket chains) cover different working conditions, accurately compensating for spatial differences, and ensuring the stability and reliability of power transmission.

[0017] Convenient maintenance: The quick-release structure of the commercial type supports disassembly and cleaning by hand, and the fixed water-resistant design of the household type allows the whole machine to be washed with water, both simplifying the maintenance process and ensuring food processing hygiene. The crank serves as the power source, enabling the equipment to work without relying on electricity and can be directly rinsed with water, avoiding complex disassembly processes, facilitating users' daily cleaning, and reducing the usage threshold.

[0018] To make the purpose, technical solutions and advantages of the present invention clearer and more definite, the following further elaborates on the present invention with reference to the attached drawings and by way of implementation cases. It should be understood that the description of specific embodiments is only used to explain the present invention and is not used to limit the scope of the present invention. Description of the drawings

[0019] Figure 1 It is the structural diagram of the commutation device for the two knife sets in Embodiment 1.

[0020] Figure 2 It is the overall structural diagram of the commercial meat cutting and mincing machine in Embodiment 1.

[0021] Figure 3 It is the structural diagram of the gearbox chamber in Embodiment 1.

[0022] Figure 4 It is the structural diagram of the clutch device in Embodiment 1.

[0023] Figure 5 It is the structural diagram of the gearbox chamber in Embodiment 1.

[0024] Figure 6It is the structure diagram of the double-knife-group commutation device in Embodiment 2.

[0025] Figure 7 It is the top view of the double-knife-group commutation device in Embodiment 2.

[0026] Figure 8 It is the overall structure diagram of the commercial meat slicer in Embodiment 2.

[0027] Figure 9 It is the structure diagram of the double-knife-group commutation device in Embodiment 3.

[0028] Figure 10 It is the top view of the double-knife-group commutation device in Embodiment 3.

[0029] Figure 11 It is the structure diagram of the double-knife-group commutation device in Embodiment 4.

[0030] Figure 12 It is the structure diagram of the double-knife-group commutation device in Embodiment 4.

[0031] Figure 13 It is the top view of the double-knife-group commutation device in Embodiment 4.

[0032] Figure 14 It is the overall structure diagram of the household meat slicer in Embodiment 4.

[0033] Figure 15 It is the structure diagram of the double-knife-group commutation device in Embodiment 5.

[0034] Figure 16 It is the top view of the double-knife-group commutation device in Embodiment 5.

[0035] Figure 17 It is the overall structure diagram of the household meat slicer in Embodiment 5.

[0036] Embodiment 1, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 in; Knife shaft A, blade B, cutter group housing C, gear D, 1st cutter group 1, 1st cutter group gear 1c, 2nd cutter group 2, 2nd cutter group gear 2c, 3 reversing device, 3a 1st bevel gear set, 3d 2nd bevel gear set, 3b horizontal transmission shaft, 3c corner transmission shaft, 4 handle, 5 guide post, 6 guide hole, 7 upper cover plate, 8 limit block, 9 feeding hopper, 10 meat grinder head, 11 screw-nut locking device, 12 clutch handle, 12a clutch spring, 12b clutch limit, 12c clutch fork, 12d wheel clutch disc, 12e shaft clutch disc, 13 material guide groove, 14 asynchronous motor, 15 small pulley, 16 large pulley, 17 drive shaft, 17a 1st small gear, 17b 2nd small gear, 18 meat cutter clutch shaft, 18a meat cutter clutch wheel, 18b meat cutter drive gear, 19 meat grinder clutch shaft, 19a meat grinder large gear, 19b meat grinder clutch wheel, 20 meat grinder transmission shaft.

[0037] Example 2 Figure 6 、 Figure 7 、 Figure 8 in; 1c 1st cutter group gear, 2c 2nd cutter group gear, 3 reversing device, 3a1 1st worm gear set, 3a2 2nd worm gear set, 3b worm, 3c 1st bevel gear, 4 speed control motor, 4a 2nd bevel gear, 5 motor bracket, 6 feeding hopper, 7 material guide groove.

[0038] Example 3 Figure 9 、 Figure 10 in; 1c 1st cutter group gear, 2c 2nd cutter group gear, 3 reversing device, 3a1 1st worm gear set, 3a2 2nd worm gear set, 3d1 1st intermediate gear, 3d2 2nd intermediate gear, 3b worm, 3c 1st bevel gear, 4 speed control motor, 4a 2nd bevel gear, 5 motor bracket, 6 feeding hopper, 7 material guide groove.

[0039] Example 4 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 in; 1st cutter group 1, 2nd cutter group 2, 3 reversing device, 3a1 1st auxiliary gear, 3a2 2nd auxiliary gear, 3b1 1st bevel gear set, 3b2 2nd bevel gear set, 4 2nd bevel gear shaft, 5 crank.

[0040] Example 5 Figure 15 、 Figure 16 、 Figure 17 in; 1c 1st cutter group bevel gear, 2c 2nd cutter group sprocket, 3 reversing device, 3a transmission shaft, 3a1 square hole, 3b chain, 4 crank. Embodiment 1

[0041] In the field of mechanical assembly, there are tolerance requirements for the assembly and machining of spatial position relationships such as orthogonal and vertical. For non-precision machinery, the angular tolerance for assembly and machining under the above spatial position relationships is usually set at ±2°. In addition, components such as gears, bearings, shafts, shaft shoulders, keyways, keys, circlip grooves, and circlips, as well as their assembly methods, are common knowledge well-known to those skilled in the art. To make the technical solution concise and highlight the key points, the conventional assembly details of individual components (such as gears, shafts, etc.) will not be elaborated in this embodiment, and the core contents closely related to the innovation points of the present invention, such as the transmission layout, connection relationship, and working principle, will be emphasized (specific details can be found below).

[0042] The double-knife-group commutation device (hereinafter referred to as the commutation device) (refer to Figure 1 ) (Existing feature) Two knife shafts (A) are parallel and aligned, with a number of circular cutting blades (B) fixed on them. After the two knife shafts (A) pass through the knife-group housing (C), a gear (D) is fixedly provided at the same end of each of the two knife shafts (A), and the two gears mesh with each other to make the two knife shafts rotate in opposite directions for cutting.

[0043] (Invention feature) The upper and lower end faces of the knife-group housing are flat. Four cylindrical guide holes (6) are provided at the upper end, and four conical guide posts (5) (with the small cone end facing down) are provided at the lower end. A foldable U-shaped handle (4) is provided on the knife group, and hinge holes are provided at both ends of the handle (4); two hinge holes are provided on the knife-group housing along the axial direction of the knife shaft at both ends, and the hinge holes are located in the middle of the knife-group housing and at a position where the upper end face faces down (the downward dimension is greater than the radius of the width of the folded handle (4)). The handle (4) is hinged to the hinge holes on the knife-group housing through screws and nuts, so that the upper end face of the knife-group housing remains flat after the handle (4) is folded.

[0044] The first knife group (1) is located in the lower layer, and the second knife group (2) is orthogonally stacked on the upper layer. The conical guide posts (5) of the second knife group (2) can be easily inserted into the guide holes (6) at the upper end of the first knife group (1). At this time, the gear surfaces of the upper and lower knife groups are perpendicular to each other, and there is a height difference between the upper and lower parts and a position difference in the horizontal plane projection.

[0045] Taking the gear surface of the first knife group in the lower layer as the reference plane front, the L-shaped housing of the commutation device (3) presents a structure of "low at the front (low position end), high on the right side (high position end)": The first bevel gear set (3a) is assembled at the low position end of the L-shaped housing, and includes a first sub-gear and a first bevel gear that are coaxially fixed. The first sub-gear is located below the first knife group gear (1c) and meshes with it; The second bevel gear set (3d) is assembled at the high position end of the L-shaped housing and includes a second secondary gear and a second bevel gear that are coaxially fixed. The second secondary gear is located below the second cutter group gear (2c) and meshes with it.

[0046] Drive shaft assembly: Conical gears are fixedly arranged at both ends of the horizontal drive shaft (3b), and it is horizontally assembled at the low position end of the L-shaped housing. The left conical gear orthogonally meshes with the first bevel gear on the first bevel gear set (3a), and the right conical gear extends to the corner of the L-shaped housing to compensate for the position difference. Corner drive shaft (3c): Conical gears are fixedly arranged at both ends. The lower conical gear orthogonally meshes with the conical gear at the corner of the horizontal drive shaft (3b), and the upper conical gear extends obliquely upward and orthogonally meshes with the second bevel gear on the second bevel gear set (3d) at the high position end to compensate for the position difference and height difference.

[0047] Machine body structure A square tube is welded to form an integral frame, including a cutter group chamber, a gearbox chamber on the side of the cutter group chamber, a motor chamber below the gearbox chamber, and a machine body support seat at the lower end of the motor chamber. The housing is riveted to the integral frame with stainless steel.

[0048] Cutter group chamber (refer to Figure 2 ) The upper end face of the cutter group chamber is flat and provided with a square opening. Four small iron blocks protruding towards the center of the opening are welded at the edge of the opening as limit blocks (8). The limit blocks (8) that are opposite to each other in pairs form a group, and each group is parallel to each other; a discharge port is provided at the lower end. Guide holes (6) matching the lower guide posts (5) of the cutter group are provided around the discharge port inside the cutter group chamber. The cutter group can be vertically placed into the cutter group chamber through the opening. Three hooks are provided at the lower end of the blanking port. The long strip-shaped material guide groove (13) is of U-shaped structure, and a round hole is drilled at one end. The round hole can be quickly hung on the hook to be fixed, forming an inclined structure with one end high and one end low; the three hooks can adjust the material guide groove (13) to discharge materials from the front (opposite to the motor chamber) or from the left and right sides, realizing a simple structure and quick disassembly and quick hanging adjustment of the material guide direction.

[0049] The reversing device (3) is fixed to the lower end of the cutter group chamber with screws: The lower guide post (5) of the first cutter group (1) is inserted into the guide hole at the lower end of the cutter group chamber, and the first cutter group gear (1c) meshes with the first secondary gear on the first bevel gear set (3a) of the reversing device (3). The lower guide post (5) of the second cutter group (2) is inserted into the guide hole (6) at the upper end of the first cutter group (1), and the second cutter group gear (2c) meshes with the second secondary gear on the second bevel gear set (3d) of the reversing device (3).

[0050] The upper cover plate (7) includes two parallel support rods and a thin plate. The length of the support rods is greater than the center distance of a single set of limit blocks (8) and less than the opening width. The thin plate is fixed to the upper part of the support rods, and a feeding port is provided in the middle. Notches (7a) matching the limit blocks (8) are provided at both ends of the support rods. Threaded through holes penetrating the support rods and the thin plate are provided at the positions corresponding to the support rods on the thin plate, and wing nuts (7b) are assembled. After the notches (7a) of the support rods of the upper cover plate (7) are aligned with the limit blocks (8), rotate the wing nuts (7b) to squeeze the upper end surface of the second cutter group (2) downward, and lock and fix the positions of the two cutter groups. After processing, rotate the wing nuts (7b) in the reverse direction, and the upper cover plate (7) translates horizontally in the plane along the direction of the distance between the two sets of limit blocks, and the notches (7a) of the support rods withdraw from the limit blocks (8). After removing the upper cover plate (7), the second cutter group (2) and the first cutter group (1) can be taken out in sequence, realizing quick disassembly, assembly and cleaning by hand.

[0051] Motor chamber (refer to Figure 3 ). An asynchronous motor (14) is assembled in the motor chamber, and a small pulley (15) is provided at the output end.

[0052] Gearbox chamber (refer to Figure 3 , Figure 4 , Figure 5 ). The clutch structure of the meat grinder and the meat cutter is the same (the components related to the common label 12 are the clutch handle 12, the clutch spring 12a, the clutch limit 12b, the clutch fork 12c, the wheel clutch disc 12d, and the shaft clutch disc 12e).

[0053] A large pulley (16) is coaxially fixed on the main shaft (17), and is driven and connected with the small pulley (15) at the output end of the asynchronous motor (14) through a belt to achieve primary speed reduction. A first small gear (17a) and a second small gear (17b) are also fixed on the main shaft (17).

[0054] One end of the clutch shaft (19) of the meat grinder is fixed with a large gear (19a) of the meat grinder, which meshes with the first small gear (17a) on the main shaft (17) to achieve secondary speed reduction. The clutch wheel (19b) at the other end meshes with the gear of the transmission shaft (20) of the meat grinder.

[0055] The inner wall of the central hole of the meat grinder clutch wheel (19b) fixes the outer ring of the bearing through interference fit; the inner ring of the bearing is in interference fit with the meat grinder clutch shaft (19), so that the meat grinder clutch wheel (19b) can rotate freely around the meat grinder clutch shaft (19). The wheel clutch disc (12d) is coaxially arranged on one side of the meat grinder clutch wheel (19b), and the through holes on it are fixedly connected with the corresponding holes of the meat grinder clutch wheel (19b) by screws to form a rigid whole. The diameter of the central hole of the wheel clutch disc (12d) is larger than the outer diameter of the meat grinder clutch shaft (19) to ensure no direct contact with the meat grinder clutch shaft (19). A keyway is opened in the middle part in the radial direction of the meat grinder clutch shaft (19), and a guiding key is installed in the keyway. The central hole of the shaft clutch disc (12e) has a clearance fit with the meat grinder clutch shaft (19), and there are guiding grooves on the inner wall of the hole that are adapted to the guiding key, so that the shaft clutch disc can slide axially along the meat grinder clutch shaft (19), and at the same time transmit circumferential torque through the guiding key (preventing idling). The opposite end faces of the wheel clutch disc (12d) and the shaft clutch disc (12e) are respectively provided with matching three-claw jaw teeth. A clutch spring (12a) is coaxially sleeved on the back of the shaft clutch disc (12e) in the opposite direction of the jaw teeth. One end of the spring abuts against the back of the shaft clutch disc (12e), and the other end abuts against the optical axis fixing ring through a plain bearing to reduce friction. The spring can be adjusted to an appropriate pre-tightening force through the optical axis fixing ring. The shaft clutch disc (12e) is pushed to move forward axially through the pre-tightening force of the spring, and the jaw teeth on both end faces of the clutch are engaged, so as to realize the power transmission of the meat grinder transmission shaft (20). A clutch fork (12c) is provided on the shaft clutch disc (12e), and the fork rod passes through the body frame and extends to the outside and is equipped with a rotatable clutch handle (12): when pressing the clutch handle (12) from the outside to the inside, the two clutch discs are disengaged (the meat grinder clutch shaft (19) rotates, the meat grinder clutch wheel (19b) does not rotate, and the power is disconnected); after pressing and rotating the handle to disengage from the clutch limit (12b) and then releasing the hand, the clutch spring (12a) resets, and the wheel and shaft are interlocked and the power is transmitted.

[0056] The meat grinder transmission shaft (20): extends to the outside of the body, has a square hole axially, and screw-nut locking devices (11) that can slide left and right are provided at both ends, which are adapted to the meat grinder heads (10) of models 12, 22, and 32. The square hole is set according to the large-sized meat grinder head (10) of model 32. When assembling the small-sized meat grinder head (10) of model 12, a suitable small-sized square sleeve needs to be sleeved in the square hole.

[0057] The meat cutter clutch wheel (18a) at one end of the meat cutter clutch shaft (18) meshes with the second small gear (17b) of the driving shaft (17) to achieve secondary deceleration, and the meat cutter transmission gear (18b) is fixedly arranged at the other end and meshes with the first cutter group gear (1c). (Another gear on the first cutter group).

[0058] The inner wall of the central hole of the clutch wheel (18a) of the meat slicer is fixed with the outer ring of the bearing by interference fit; the inner ring of the bearing is in interference fit with the clutch shaft (18) of the meat slicer, so that the clutch wheel (18a) of the meat slicer can rotate freely around the clutch shaft (18) of the meat slicer. The wheel clutch disc (12d) is coaxially arranged on one side of the clutch wheel (18a) of the meat slicer, and the through holes on it are fixedly connected with the corresponding holes of the clutch wheel (18a) of the meat slicer by screws to form a rigid whole. The diameter of the central hole of the wheel clutch disc (12d) is larger than the outer diameter of the clutch shaft (18) of the meat slicer to ensure no direct contact with the clutch shaft of the meat slicer. A keyway is opened in the radial middle part of the clutch shaft (18) of the meat slicer, and a guide key is installed in the keyway. The central hole of the shaft clutch disc (12e) has a clearance fit with the clutch shaft (18) of the meat slicer, and there are guide grooves on the inner wall of the hole that are adapted to the guide key, so that the shaft clutch disc can slide axially along the clutch shaft of the meat slicer, and at the same time transmit circumferential torque through the guide key (to prevent idling). The opposite end faces of the wheel clutch disc (12d) and the shaft clutch disc (12e) are respectively provided with matching three-claw jaw teeth. A clutch spring (12a) is coaxially sleeved on the back of the shaft clutch disc jaw teeth in the opposite direction. One end of the spring abuts against the back of the shaft clutch disc (12e), and the other end abuts against the optical axis fixing ring through a plain bearing to reduce friction. The spring can be adjusted to an appropriate pre-tightening force through the optical axis fixing ring. The shaft clutch disc (12e) is pushed axially forward by the pre-tightening force of the spring, and the jaw teeth on both ends of the clutch are engaged, so as to realize the power transmission of the transmission gear (18b) of the meat slicer. A clutch fork (12c) is provided on the shaft clutch disc (12e), and the fork rod passes through the machine body frame and extends to the outside and is equipped with a rotatable clutch handle (12): when pressing the clutch handle (12) from the outside to the inside, the two clutch discs are disengaged (the clutch wheel (18a) of the meat slicer rotates, the clutch shaft (18) of the meat slicer does not rotate, and the power is disconnected); after pressing the rotary handle to disengage the clutch limit (12b) and then releasing the hand, the clutch spring (12a) resets, and the wheel and shaft are interlocked and the power is transmitted.

[0059] Working principle.

[0060] When the meat slicer works: after the asynchronous motor (14) starts, the detailed power transmission path is; the small pulley (15) at the output end of the asynchronous motor (14) → the large pulley (16) on the main shaft → the second small gear (17b) → the clutch wheel (18a) of the meat slicer (after pressing the rotary clutch handle (12) to disengage the clutch limit (12b) and then releasing the hand, the clutch spring (12a) resets, and the wheel and shaft are interlocked and the power is transmitted) → the transmission gear (18b) of the meat slicer → the first knife group gear (1c) → the first bevel gear set (3a) → the horizontal transmission shaft (3b) → the corner transmission shaft (3c) → the second bevel gear set (3d) → the second knife group gear (2c), realizing the simultaneous rotation of the two knife groups. The user puts the meat block to be cut into the feeding hopper (9), the meat block is first sliced by the second knife group (2), and then falls to the first knife group (1) by gravity to be shredded and then slides into the container through the guide groove (13).

[0061] Working of the meat grinder: After the asynchronous motor (14) starts, the detailed power transmission path is as follows: small pulley (15) at the output end of the asynchronous motor (14) → large pulley (16) on the main shaft → first small gear (17a) → large gear (19a) of the meat grinder → clutch wheel (19b) of the meat grinder (after pressing and rotating the clutch handle (12) to disengage from the clutch limit (12b) and then releasing the hand, the clutch spring (12a) resets, and the wheel shaft is interlocked to transmit power) → further driving the transmission shaft (20) of the meat grinder to rotate, driving the auger of the meat grinder head (10) to work and grinding the meat block into minced meat.

[0062] Simultaneous working: After pressing and rotating the two clutch handles (12) to disengage from the clutch limit (12b) and then releasing the hand, the two clutch springs (12a) reset, the wheel shaft is interlocked and transmits power, and the meat grinder and the meat slicer work simultaneously to achieve slicing and grinding meat at the same time.

[0063] Disassembly, installation and cleaning.

[0064] Loosen the wing bolt (7b) of the upper cover plate (7), the upper cover plate (7) translates along the gap between the two groups of limit blocks (8), the support rod notch (7a) exits the limit block (8), and the upper cover plate (7) is disassembled; sequentially pull out the second knife group (2) and the first knife group (1) upward, clean the residual meat scraps inside the knife group and then reassemble.

[0065] Embodiment 2 (reference Figure 6 , Figure 7 , Figure 8 ).

[0066] The differences between Embodiment 2 and Embodiment 1 are as follows: First, Embodiment 2 only has the function of slicing meat. After removing the meat grinding function, the gearbox chamber of the whole machine is removed. Since the motor torque required for the meat grinding function is large, while the torque required for slicing meat is small, a speed-regulating motor (4) with a smaller power can be selected.

[0067] Second, the double-knife-group commutation device (3) adopts a worm and worm gear commutation device, including a first worm gear group (3a1), a second worm gear group (3a2) and a worm (3b), which are assembled inside the L-shaped housing.

[0068] The first worm gear group (3a1): It includes a first worm gear and a first sub-gear fixed coaxially, and the first sub-gear meshes with the first knife group gear (1c). The spiral teeth of the first worm gear are close to the corner of the L-shaped housing at the lower end to compensate for the horizontal position difference.

[0069] The second worm gear group (3a2): It includes a second worm gear and a second sub-gear fixed coaxially, and the second sub-gear meshes with the second knife group gear (2c). The spiral teeth of the second worm gear are close to the corner of the L-shaped housing at the upper end to compensate for the horizontal position difference.

[0070] Worm (3b): A coaxial two - stage helical - toothed worm with its axis perpendicular to the horizontal plane, assembled at the corner of the L - shaped housing. The lower helical teeth mesh with the first worm gear, and the upper helical teeth mesh with the second worm gear to compensate for the vertical height difference and the orthogonal angle difference of the tool axis.

[0071] At the top of the worm (3b), a first bevel gear (3c) is assembled, which meshes orthogonally with the second bevel gear (4a) at the output end of the speed - regulating motor (4). The speed - regulating motor (4) is fixed to the inner frame of the tool group chamber through the motor support (5). The reversing device (3) and the speed - regulating motor (4) are both fixed inside the tool group chamber. The disassembly and assembly methods of the first and second tool groups are the same as those in Embodiment 1. Working principle

[0072] Start the speed - regulating motor (4). The power path is: speed - regulating motor (4) → second bevel gear (4a) → first bevel gear (3c) of the worm (3b) → upper - segment helical teeth of the worm (3b) → second worm - gear group (3a2) → second tool group (2) → lower - segment helical teeth of the worm (3b) (synchronized with the upper segment) → first worm - gear group (3a1) → first tool - group gear (1c), realizing the rotation of the double - tool groups. The meat block is put in from the feeding hopper (6), sliced by the second tool group and shredded by the first tool group, and then slides into the container through the guiding groove (7). The cleaning principle is the same as that in Embodiment 1. Embodiment 3 (reference Figure 9 、 Figure 10 )

[0073] Embodiment 3 is basically the same as Embodiment 2, except that: to meet the processing requirements of special diamond - shaped meat strips, the cross - angle of the horizontal projections of the upper and lower tool - group tool axes is 45°, and the gears of the upper and lower tool groups form a 45° L - shaped included angle.

[0074] Two intermediate gears are added to the double - tool - group reversing device (3) to compensate for the horizontal position difference; The upper and lower tool groups are stacked cross -wise at 45°. The reversing device includes a first worm - gear group (3a1) and a second worm - gear group (3a2); A first intermediate gear (3d1), a second intermediate gear (3d2) and a worm (3b) are assembled inside the 45° L - shaped housing; The first intermediate gear (3d1) meshes with the first tool - group gear (1c), and the second intermediate gear (3d2) meshes with the second tool - group gear (2c).

[0075] The first worm - gear group (3a1): includes a first worm gear and a first auxiliary gear coaxially fixed, and the first auxiliary gear meshes with the first intermediate gear (3d1).

[0076] Second worm gear set (3a2): It includes a second worm gear and a second auxiliary gear fixed coaxially. The second auxiliary gear meshes with a second intermediate gear (3d2).

[0077] The spiral teeth of the first and second worm gears both approach the 45° angle of the L-shaped housing to compensate for the horizontal position difference.

[0078] Worm (3b): A coaxial two-section spiral tooth worm with its axis perpendicular to the horizontal plane, assembled inside the 45° angle of the L-shaped housing. The lower spiral teeth mesh with the first worm gear, and the upper spiral teeth mesh with the second worm gear to compensate for the vertical height difference and the 45° tool axis crossing angle difference.

[0079] A first bevel gear (3c) is assembled at the top of the worm (3b) and meshes orthogonally with the second bevel gear (4a) of the speed regulating motor (4). The position of the guide post and the guide hole is adjusted due to the angle difference, and the rest is the same as in Embodiment 2.

[0080] Embodiment 4 (reference Figure 11 , Figure 12 , Figure 13 , Figure 14 ) Embodiment 4 is basically the same as Embodiment 2, except that: a hand crank (5) is used to replace the speed regulating motor; The structure of the reversing device (3) is adjusted as follows: The reversing device (3) includes a first auxiliary gear (3a1), a second auxiliary gear (3a2), and a bevel gear set, which is assembled inside the L-shaped housing and fixed between the vertical height differences of the lower first tool group gear and the upper second tool group gear. The bevel gear set includes: First bevel gear set (3b1): It includes a first bevel gear and a first intermediate gear fixed coaxially, assembled at the front corner of the L-shaped housing; Second bevel gear set (3b2): It includes a second bevel gear and a second intermediate gear fixed coaxially (key grooves are opened on both gears and assembled on the second bevel gear shaft (4) with the same key grooves opened, and fixed by keys; on the outer surface of the second bevel gear shaft (4), two snap ring grooves are radially opened at corresponding positions, and the snap ring grooves are located on both sides of the bevel gear set respectively, and the axial displacement of the second bevel gear set (3b2) is restricted by snap rings), assembled at the side corner of the L-shaped housing. The second bevel gear meshes orthogonally with the first bevel gear to compensate for the angle difference. Gear meshing relationship: The first auxiliary gear (3a1) is located above the lower first tool group gear and meshes with the first tool group gear and the first intermediate gear respectively; The second auxiliary gear (3a2) is located below the upper second tool group gear and meshes with the second tool group gear and the second intermediate gear respectively. Shaft assembly: A square hole is axially opened at the outer end of the second bevel gear shaft (4), and both ends are fixed to the housing of the reversing device (3) by interference fit of bearings. The first knife set (1), the second knife set (2) and the reversing device (3) are integrally assembled in a plastic housing. Feeding ports and discharging ports (the lower end of the discharging port is hollowed out) are provided at the upper and lower ends of the plastic housing. A round hole is opened in the housing at the position of the square hole of the second bevel gear shaft (4). After the square head of the crank (5) is inserted into the square hole through this round hole, the two knife sets are rotated manually. Working principle.

[0081] Put the meat block into the feeding port, insert the crank (5), hold the housing of the machine body with one hand, and turn the crank (5) with the other hand. After the meat block is sliced by the second knife set (2), it falls into the first knife set (1) for shredding, and finally drops into the container at the lower hollowed-out position. After cutting the meat, pull out the crank (5). The whole machine has a pure mechanical structure and can be washed by flushing or soaking.

[0082] Example 5 (reference Figure 15 , Figure 16 , Figure 17 ) Example 5 is basically the same as Example 4, the difference is: single knife shaft rotary cutting is adopted, and the structure of the reversing device (3) is adjusted as follows: Composition of the knife set: Two knife shafts are parallel, and several polygonal cutting blades are fixed. One knife shaft is fixed, and the other is a rotatable knife shaft; The first and second knife sets are orthogonally stacked, and the horizontal projections of the knife shafts are vertically crossed. The housings of the two knife sets are fixed into an integral structure by bolts; The rotatable knife shaft of the lower knife set is assembled with the first knife set bevel gear (1c); The rotatable knife shaft of the upper knife set is assembled with the second knife set sprocket (2c).

[0083] Reversing device (3): A horizontally arranged transmission shaft (3a), with a bevel gear fixed at one end, a sprocket fixed in the middle, and a square hole (3a1) axially opened at the other end: The bevel gear end of the transmission shaft (3a) is orthogonally meshed with the first knife set bevel gear (1c) to compensate for the angle difference of the knife shafts; The sprocket on the transmission shaft (3a) is aligned with the second knife set sprocket (2c) and is driven by a chain (3b) to compensate for the position difference and height difference of the knife shafts.

[0084] The transmission shaft (3a) is a hollow circular tube, with a bearing assembled inside (the bearing set is on the fixed rod inside the housing of the reversing device (3)). The end of the square hole (3a1) penetrates the housing of the reversing device (3) and is in interference fit with the housing through the bearing to realize the free rotation of the transmission shaft.

[0085] Overall assembly: The first and second cutter groups and the commutation device (3) are integrally assembled inside the plastic housing. The upper and lower ends of the housing are provided with a feeding port and a discharging port (the lower end of the discharging port is hollowed out). A hole is opened at the position of the square hole (3a1) of the transmission shaft (3a), and the square head of the crank (4) is inserted to drive the two cutter groups to rotate. Working principle The same as in Embodiment 4.

[0086] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A double knife group reversing device, comprising a first knife group at a lower layer, a second knife group at an upper layer and a double knife group reversing device, characterized in that: Each knife set includes two knife shafts arranged in parallel, each knife shaft is fixed with a plurality of cutting blades, and the cutting tracks of the cutting blades on adjacent knife shafts partially overlap; The projections of the knife axes of the upper and lower knife groups on the horizontal plane intersect, and driven wheels are fixed at one end of the knife axes of the two knife groups respectively. The projections of the driven wheels of the two knife groups on the horizontal plane are L-shaped, and there is a position difference in the horizontal direction and a height difference in the vertical direction, forming an L-shaped ladder structure, the low end corresponds to the lower knife group, and the high end corresponds to the upper knife group; The double-knife group reversing device is configured as follows: Compensate for the horizontal position difference and vertical height difference of the driven wheels of the upper and lower cutting groups; Compensate for the angle difference formed by the intersection of the two tool axes through angle conversion; A single driving force is transmitted to the two knife groups, so that the two knife groups rotate and cut simultaneously.

2. The double-knife group reversing device according to claim 1, characterized in that: The knife group driven wheel is a knife group gear; The knife axes of the upper and lower knife groups are orthogonally intersected in the horizontal plane projection The double-knife group reversing device includes a gear assembly and a transmission shaft assembly, which are assembled inside the L-shaped housing; The gear assembly comprises: A first bevel gear set is assembled at the lower end of the L-shaped housing, and comprises a first sub-gear and a first bevel gear fixed coaxially, wherein the first sub-gear is located below the first knife set gear and meshes with it; A second bevel gear set is assembled at the high end of the L-shaped housing, comprising a second sub-gear and a second bevel gear fixed coaxially, wherein the second sub-gear is located below the second cutter set gear and meshes with the second cutter set gear; The transmission shaft assembly comprises: A horizontal transmission shaft, with bevel gears fixed at both ends, is horizontally mounted on the lower end of the L-shaped housing, with the bevel gear at the first end being orthogonally meshed with the first bevel gear, and the bevel gear at the second end extending to the corner of the L-shaped housing to compensate for position difference; The corner transmission shaft has bevel gears fixed at both ends. The bevel gear at the first end is orthogonally meshed with the bevel gear at the corner of the horizontal transmission shaft, and the bevel gear at the second end extends upward at an angle and is orthogonally meshed with the second bevel gear at the high end to compensate for angle differences, position differences and height differences.

3. The double-knife group reversing device according to claim 1, characterized in that: The knife group driven wheel is a knife group gear; The gear surface of the first tool set is the front surface, and the gear surface of the second tool set is the side surface; The double-knife-set reversing device comprises a worm gear set and a worm, which are assembled inside the housing of the double-knife-set reversing device; The worm gear assembly comprises: The first worm gear is coaxially fixed with the first sub-gear, and the first sub-gear is meshed with the first cutter group gear; The second worm gear is coaxially fixed with the second sub-gear, and the second sub-gear is meshed with the second cutter group gear; The horizontal projections of the first and second worm gear helical teeth are both closer to the worm direction at the front and side intersections to compensate for the position difference. The worm is a coaxial two-stage helical tooth worm with its axis perpendicular to the horizontal plane. It is assembled at the angle between the horizontal plane projections of the two worm wheels. Its lower end helical teeth are meshed with the helical teeth of the first worm wheel, and its upper end helical teeth are meshed with the helical teeth of the second worm wheel to compensate for the height difference in the vertical direction and the angle difference formed by the intersection of the knife axes of the two knife groups.

4. The double-knife group reversing device according to claim 1, characterized in that: The knife group driven wheel is a knife group gear; The projections of the knife axes of the upper and lower knife groups on the horizontal plane are orthogonal, the gear surface of the first knife group is the front side, and the gear surface of the second knife group is the side side; The double-knife group reversing device includes a first sub-gear, a second sub-gear, and a bevel gear set, which are assembled inside an L-shaped housing; The bevel gear set comprises: The first bevel gear set includes a first bevel gear and a first intermediate gear fixed coaxially, and is assembled at a front corner of the L-shaped housing; The second bevel gear set includes a coaxially fixed second bevel gear and a second intermediate gear, which are assembled at the side corner of the L-shaped housing, and the second bevel gear is orthogonally meshed with the first bevel gear to compensate for the angle difference formed by the orthogonal intersection of the two cutter shafts; The first sub-gear is located above the first cutter group gear and is meshed with the first cutter group gear and the first intermediate gear respectively; The second sub-gear is located below the second cutter group gear and meshes with the second cutter group gear and the second intermediate gear respectively; The gears of the double knife group reversing device are designed with an L-shaped transmission structure and are installed in the height difference area between the upper and lower knife group gears to compensate for the vertical height difference and horizontal position difference of the two knife group gears.

5. The double-knife group reversing device according to claim 1, characterized in that: The knife group further comprises a knife group housing, and the knife group housings of the first knife group at the lower layer and the second knife group at the upper layer are fixedly integrated; The driven wheel of the first knife group in the lower layer is a bevel gear, and the driven wheel of the second knife group in the upper layer is a sprocket; The projections of the knife axes of the upper and lower knife groups on the horizontal plane are orthogonal and intersecting; The double-knife group reversing device comprises a housing, a transmission shaft and a chain; The transmission shaft is arranged horizontally, and the bevel gear at the first end thereof is orthogonally meshed with the bevel gear of the first knife group to compensate for the angle difference formed by the orthogonal knife axes; The transmission shaft is fixed to the lower end of the first knife group of the two knife group housings through the double knife group reversing device housing; The sprocket at the second end of the transmission shaft is parallel to the axis of the second knife group sprocket and the two sprocket wheel surfaces are aligned. The two sprockets are driven by chains to compensate for the horizontal position difference and the vertical height difference.

6. A meat slicer, characterized by comprising the double knife group reversing device according to any one of claims 1 to 5, and further comprising a machine body, a driving device, The machine body includes a knife assembly chamber; The first and second knife groups and the double knife group reversing device are installed in the knife group chamber; The driving device is connected to the driven wheel of the knife group and / or the reversing device of the double knife group, and transmits the driving force to the two knife groups through the reversing device of the double knife group, so that the two knife groups rotate simultaneously, wherein the second knife group on the upper layer slices and the first knife group on the lower layer shreds, thereby cutting the meat to be processed into shreds at one time.

7. The meat slicer according to claim 6, characterized in that ； The knife group further comprises a knife group housing, and the lower first knife group and the upper second knife group are quick-detachable knife group housings; The upper and lower end surfaces of the two-knife assembly housing are flat, the upper end surface is provided with a guide hole, and the lower end surface is provided with a guide column; When the two knife groups are cross-stacked, the guide column at the lower end of the upper knife group is inserted into the guide hole at the upper end of the lower knife group without interference, so as to limit the sliding of the upper knife group; The knife assembly housing is provided with a foldable handle, which is a U-shaped structure, with two ends of which are respectively hinged to the two side surfaces of the knife assembly housing, and the hinge point is lower than the upper end plane of the knife assembly housing; After the handle is folded, the upper end surface of the knife set housing remains flat to avoid interference when stacking.

8. The meat slicer according to claim 7, characterized in that: The knife group chamber also includes an upper cover plate, the upper end of the knife group chamber is provided with a square opening, two groups of limit blocks are arranged in the opening, each group includes two limit blocks arranged in parallel, and the two groups of limit blocks are parallel to each other and spaced apart; a discharge port is provided at the lower end of the knife group chamber, and a guide hole matching the guide column at the lower end of the knife group is provided at the edge of the internal discharge port, and the knife group can be vertically placed into the knife group chamber through the square opening; The double knife group reversing device is fixed to the lower end of the knife group chamber, the guide column at the lower end of the first knife group is inserted into the guide hole at the lower end of the knife group chamber, and its driven wheel is meshed with the first sub-gear of the reversing device; the guide column at the lower end of the second knife group is inserted into the guide hole at the upper end of the first knife group, and its driven wheel is meshed with the second sub-gear of the reversing device; The upper cover plate includes two parallel support rods and a thin plate: The length of the support rod is greater than the center distance of a single set of limit blocks and less than the width of the square opening, and notches matching the limit blocks are provided at both ends; The thin plate is fixed to the upper part of the support rod, a feeding port is provided in the middle part, and a threaded through hole is provided at the position corresponding to the support rod, on which a butterfly bolt is installed; After the notch of the support rod of the upper cover is aligned with the limit block, the butterfly bolt is rotated to squeeze the upper end surface of the second knife group downward to lock and fix the two knife groups; after the processing is completed, the butterfly bolt is rotated in the opposite direction to translate the upper cover along the gap direction of the two groups of limit blocks so that the notch of the support rod exits the limit block. After removing the upper cover, the second knife group and the first knife group can be taken out in turn to achieve quick disassembly and cleaning by hand.

9. The meat slicer according to claim 8, characterized in that: The machine body further comprises a motor chamber and a gear box chamber, wherein the gear box chamber is located at the side of the knife assembly chamber, and the motor chamber is located at the lower end of the gear box chamber; A meat grinder transmission shaft is provided outside the gear box chamber, and a square hole is provided in the axial direction of the transmission shaft. Slidable and adjustable screw and nut locking devices are provided at both ends of the square hole to adapt to meat grinder heads of different models; The driving device is an asynchronous motor, which is fixed in the motor chamber, and the small pulley at the output end is connected to the large pulley in the gear box chamber through a belt to achieve a first-stage reduction. The gearbox chamber also includes two small gears fixed coaxially with the large pulley, and the small gears are respectively meshed with the large gears on the clutch shaft of the meat grinder and the clutch shaft of the meat slicer to achieve two-stage speed reduction; The meat grinder clutch shaft and the meat slicer clutch shaft are respectively provided with tooth-type clutch devices, and the locking or separation state of the clutch devices is controlled by operating the clutch fork to switch the synchronous drive mode or the independent drive mode of the two shafts.

10. The meat slicer according to claim 6 is characterized in that: The machine body comprises a knife group chamber, wherein the knife group chamber has a feeding port at the upper end and a discharging port at the lower end; The first and second knife groups and the double knife group reversing device are fixed in the knife group chamber; The driving device comprises a hand crank which is drivingly connected to the driven wheel of the knife group or the reversing device so as to transmit the driving force to the two knife groups via the reversing device, so that the two knife groups rotate and cut simultaneously.

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