Double action head and face machine

Abstract

A double-action lifting head and face machine, comprising: a base, a machine body, a machine head, a barrel main body, a stirring assembly, a driving motor, a first transmission assembly, a second transmission assembly, a clutch transmission assembly and a lifting assembly; when the machine head is lifted, the clutch transmission assembly can disconnect the power transmission of the first transmission assembly and the second transmission assembly; when the machine head is turned down to the machine body, the clutch transmission assembly can connect the power transmission of the first transmission assembly and the second transmission assembly; the lower part of the barrel main body is provided with a barrel driving shaft, a lock block and a lock disc; the lock block is slidingly installed in the lock groove of the driving flange, and the bottom flange assembly is provided with a limiting groove on the outer periphery of the flange matching groove towards the side; the lock block can slidingly extend out of the driving flange and be clamped into the limiting groove. The utility model, single-motor driven double system, through the ingenious clutch transmission assembly design, only one driving motor can drive the stirring assembly and the barrel main body at the same time.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and in particular to a double-action head-up dough mixer. Background Technology

[0002] A dough mixer is a type of pasta machine, primarily used to evenly mix flour and water to form a dough for later use. The overhead dough mixer is one such type. Dough mixers are common kitchen appliances used in many households for making pasta dishes or cakes, and are widely popular. The double-action dough mixer employs a compound motion design: while the mixing head drives the mixing components to rotate, the base drives the mixing bowl to rotate in the opposite direction, creating a two-way kneading effect that significantly improves dough gluten development and mixing uniformity.

[0003] However, existing double-action dough mixers have the following drawbacks: 1. The machine head and base adopt two independent transmission systems with a dual-motor design to control the mixing components and mixing bowl respectively. However, this design will result in relatively high manufacturing and operating costs for the dough mixer. In addition, the increase in components will also easily increase the failure rate of the dough mixer, reduce its service life and maintenance frequency.

[0004] 2. To ensure stable operation of the material hopper, existing equipment generally adopts a rigid fixed structure, requiring the hopper to be locked to the base drive shaft by bolts or a snap-fit ​​mechanism. While this design ensures transmission reliability, it makes disassembling the hopper difficult. After kneading, users cannot easily remove the hopper to retrieve the dough, change ingredients, or clean it; they must manually scoop the dough out of the fixed hopper, resulting in low operational efficiency and unsanitary conditions.

[0005] Therefore, further improvements are needed. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a double-action head-up dough-making machine.

[0007] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a double-action head-lifting dough mixer, including: a base, a machine body, a machine head, a main material hopper, a stirring assembly, a drive motor, a first transmission assembly, a second transmission assembly, a clutch transmission assembly, and a lifting assembly; The machine body is located at the rear of the base, the machine head is rotatably hinged to the machine body, and the material bucket body is located at the front of the base; the first transmission component is located at the machine head and connected to the stirring component, which can drive the stirring component to rotate; the second transmission component is located at the base and connected to the material bucket body, which can drive the material bucket body to rotate; the lifting component is used to lift the machine head; The clutch transmission assembly is disposed on the machine body, and its upper and lower ends are respectively connected to the first transmission assembly and the second transmission assembly; when the machine head is raised, the clutch transmission assembly can disconnect the power transmission between the first transmission assembly and the second transmission assembly; when the machine head is lowered to the machine body, the clutch transmission assembly can engage the power transmission between the first transmission assembly and the second transmission assembly. The material hopper body is provided with a material hopper drive shaft, a locking block, and a locking disc at its lower part; a bottom flange assembly is provided at the bottom of the material hopper body; a drive flange is provided at the top of the material hopper drive shaft; the bottom flange assembly is provided with a flange mating groove, and the drive flange can be embedded in the flange mating groove; the locking block is slidably installed in the locking groove of the drive flange, and the bottom flange assembly is provided with a limiting groove on the outer periphery of the flange mating groove in a lateral direction; the locking block can slide out of the drive flange and engage in the limiting groove.

[0008] Optionally, a connecting pin is provided below the locking block; the locking disc is rotatably disposed on the material barrel drive shaft, located below the drive flange; the locking disc is provided with an arc-shaped locking hole, and the connecting pin passes through the arc-shaped locking hole; rotating the locking disc allows the connecting pin to slide along the arc-shaped locking hole, and synchronously drives the locking block to slide relative to the locking groove, so that the locking block extends into or disengages from the limiting groove.

[0009] Optionally, an elastic element is provided below the locking disc to press the locking disc upward against the drive flange.

[0010] Optionally, the connecting pin is rotatably fitted with a pin bushing; the outer side of the pin bushing can abut against the arc-shaped locking hole; the connecting pin is a T-screw with a limit cap at the bottom; the top of the connecting pin is threaded to the locking block, and the pin bushing is located above the limit cap.

[0011] Optionally, the lower side cover of the drive flange is provided with a lower tray; the lower tray has a relief groove corresponding to the movement of the connecting pin; the lower tray abuts between the drive flange and the locking disc; the lower tray is used to fit and support the lower side of the bottom flange assembly.

[0012] Optionally, the clutch transmission assembly includes an upper clutch transmission shaft and a lower clutch transmission shaft; the upper end of the upper clutch transmission shaft is connected to the first transmission assembly, and the lower end is engaged with the lower clutch transmission shaft; the lower end of the lower clutch transmission shaft is connected to the second transmission assembly.

[0013] Optionally, a clutch engagement cap and a clutch drive crossbar are provided at the joint between the upper clutch drive shaft and the lower clutch drive shaft; the clutch engagement cap has several vertically extending clutch slots along its circumference, and the clutch drive crossbar can be engaged into the clutch slots.

[0014] Optionally, two adjacent clutch slots are separated by a vertically extending ratchet; the top of the ratchet is provided with an inclined surface that tilts in the same direction of rotation.

[0015] Optionally, the machine body is provided with a locking rod; the machine head is provided with a locking block facing downwards; the locking block is provided with a locking hook; the locking rod is provided with a locking part, and one side of the locking part is a notch-shaped unlocking part; Rotating the locking rod allows the locking hook to be attached to the locking part, thus locking the machine head and the machine body. Alternatively, the unlocking part can be aligned with the locking hook, which can pass through the unlocking part and disengage from the locking rod, thus placing the machine head and body in an unlocked state.

[0016] Optionally, there are two locking blocks spaced apart; the locking part and the unlocking part are provided in two sets corresponding to the two locking blocks.

[0017] The beneficial effects of this utility model are: 1. Significantly reduced costs and improved reliability: The single-motor drive dual-system, through a clever clutch transmission component design, requires only one drive motor to simultaneously drive the stirring component (first transmission component) and the main body of the material tank (second transmission component). This directly eliminates the costs of traditional dual-motor designs (motor cost, control system cost, wiring cost, etc.). It also reduces the number of components and lowers the failure rate.

[0018] 2. Enables quick, tool-free disassembly and installation of the material hopper: The flange mating groove of the bottom flange assembly of the material hopper mates with the drive flange at the top of the drive shaft to achieve positioning; the mechanical locking of the material hopper is achieved by the sliding of the locking block in the locking groove of the drive flange and its engagement / disengagement with the limiting groove on the outer periphery of the bottom flange assembly.

[0019] 3. Synchronous Cut-off of Lifting and Power Transmission: The integrated design of the drive chain avoids mechanical redundancy in multi-motor coordination, reduces potential failure points, and significantly improves equipment stability and service life. The power transmission to the main body of the mixing tank is automatically cut off when the machine head lifts, and automatically resumes linkage when the machine head tilts down, requiring no additional control steps. This ensures operational safety and simplifies the workflow. While maintaining bidirectional kneading to improve dough gluten development, the mechanical clutch precisely transmits power, ensuring a stable speed ratio between the mixing components and the main body of the mixing tank, resulting in superior mixing uniformity compared to traditional separate drive designs.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the double-action head-up dough mixer of this utility model; Figure 2 for Figure 1 A schematic diagram showing the result of the machine head of the double-action head-up dough mixer being raised. Figure 3 for Figure 2 A schematic diagram of the structure of a double-action head-up dough mixer after its outer casing is concealed. Figure 4 for Figure 1 Cross-sectional view of the clutch transmission assembly of a double-action head-up dough mixer; Figure 5 for Figure 1 Cross-sectional view of the lifting assembly of a double-action head-up dough mixer; Figure 6 This is an exploded view of the main body of the material bucket and the components below it in this utility model; Figure 7 This is another exploded view of the main body of the material bucket and the components below it in this utility model; Figure 8 This is a cross-sectional view of the main body of the material bucket and the components below it in this utility model.

[0022] Explanation of key component symbols: 10. Base; 20. Machine body; 21. Locking rod; 211. Locking part; 212. Unlocking part; 22. Handle; 30. Machine head; 31. Locking block; 311. Locking hook; 40. Material bucket body; 410. Bottom flange assembly; 411. Flange mating groove; 412. Limiting groove; 420. Material bucket drive shaft; 421. Drive flange; 422. Locking groove; 423. Wall structure; 424. Flange top cover; 425. Lower tray; 430. Locking block; 431. Connecting pin; 4311, Limiting cap; 432, Pin bushing; 440, Locking disc; 441, Arc-shaped locking hole; 442, Elastic element; 443, Limiting bushing; 444, Connecting bearing; 50, Stirring assembly; 60, Drive motor; 61, First transmission assembly; 62, Second transmission assembly; 70, Clutch transmission assembly; 71, Upper clutch transmission shaft; 72, Lower clutch transmission shaft; 73, Clutch engagement cap; 731, Clutch slot; 732, Ratchet; 74, Clutch drive crossbar; 80, Lifting assembly. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Example Reference Figures 1 to 8 The present invention proposes a double-action head-lifting dough mixer, comprising: a base 10, a machine body 20, a machine head 30, a material hopper body 40, a mixing assembly 50, a drive motor 60, a first transmission assembly 61, a second transmission assembly 62, a clutch transmission assembly 70, and a lifting assembly 80. The machine body 20 is located at the rear of the base 10, the machine head 30 is rotatably hinged to the machine body 20, and the material barrel body 40 is located at the front of the base 10; the first transmission assembly 61 is located at the machine head 30 and connected to the stirring assembly 50, which can drive the stirring assembly 50 to rotate; the second transmission assembly 62 is located at the base 10 and connected to the material barrel body 40, which can drive the material barrel body 40 to rotate; the lifting assembly 80 is used to lift the machine head 30; The clutch transmission assembly 70 is disposed on the machine body 20, and its upper and lower ends are respectively connected to the first transmission assembly 61 and the second transmission assembly 62. When the machine head 30 is raised, the clutch transmission assembly 70 can disconnect the power transmission between the first transmission assembly 61 and the second transmission assembly 62. When the machine head 30 is tilted down to the machine body 20, the clutch transmission assembly 70 can engage the power transmission between the first transmission assembly 61 and the second transmission assembly 62. The material barrel body 40 is provided with a material barrel drive shaft 420, a locking block 430 and a locking disc 440 at its lower part; a bottom flange assembly 410 is provided at the bottom of the material barrel body 40; a drive flange 421 is provided at the top of the material barrel drive shaft 420; the bottom flange assembly 410 is provided with a flange mating groove 411, and the drive flange 421 can be embedded in the flange mating groove 411; the locking block 430 is slidably installed in the locking groove 422 of the drive flange 421, and the bottom flange assembly 410 is provided with a limiting groove 412 on the outer periphery of the flange mating groove 411 in a lateral direction; the locking block 430 can slide out of the drive flange 421 and be engaged in the limiting groove 412.

[0028] The beneficial effects of this utility model are: 1. Significantly reduced costs and improved reliability: The single-motor drive dual system, through the ingenious clutch transmission component 70 design, requires only one drive motor 60 to simultaneously drive the stirring component 50 (first transmission component 61) and the main body of the material tank 40 (second transmission component 62). This directly eliminates the costs of traditional dual-motor designs (motor cost, control system cost, wiring cost, etc.). It also reduces the number of components and lowers the failure rate.

[0029] 2. Enables quick, tool-free disassembly and installation of the material hopper: The flange mating groove 411 of the bottom flange assembly 410 of the material hopper engages with the drive flange 421 at the top of the drive shaft to achieve positioning; the mechanical locking of the material hopper is achieved by the sliding of the locking block 430 in the locking groove 422 of the drive flange 421 and its engagement / disengagement with the outer peripheral limiting groove 412 of the bottom flange assembly 410.

[0030] 3. Synchronous Cut-off of Lifting and Power Transmission: The integrated design of the transmission chain avoids mechanical redundancy in multi-motor coordination, reduces potential failure points, and significantly improves equipment stability and service life. The power transmission to the main body of the mixing tank 40 is automatically cut off when the machine head 30 lifts, and automatically resumes linkage when the machine head 30 tilts down, requiring no additional control steps. This ensures operational safety and simplifies the workflow. While maintaining bidirectional kneading to improve dough gluten development, the mechanical clutch precisely transmits power, ensuring a stable speed ratio between the mixing component 50 and the main body of the mixing tank 40, resulting in superior mixing uniformity compared to traditional separate drive designs.

[0031] In this embodiment, a connecting pin 431 is provided below the locking block 430; the locking disc 440 is rotatably disposed on the material bucket drive shaft 420, located below the drive flange 421; the locking disc 440 is provided with an arc-shaped locking hole 441, and the connecting pin 431 passes through the arc-shaped locking hole 441; rotating the locking disc 440 allows the connecting pin 431 to slide along the arc-shaped locking hole 441, and synchronously drives the locking block 430 to slide relative to the locking groove 422, so that the locking block 430 extends into or disengages from the limiting groove 412.

[0032] The locking disc 440, through the cooperation of the arc-shaped locking hole 441 and the connecting pin 431, converts the rotational motion into the linear sliding of the locking block 430, achieving precise control of locking / unlocking; the mechanical linkage design ensures that the extension stroke of the locking block 430 is strictly matched with the rotation angle of the locking disc 440, avoiding misoperation or semi-locked state, and improving reliability.

[0033] Specifically, an elastic element 442 is provided below the locking disc 440 to press the locking disc 440 upward against the drive flange 421. The elastic element 442 presses the locking disc 440 upward, and the continuous pressing force counteracts working vibrations, preventing the locking disc 440 from rotating accidentally and causing the locking block 430 to disengage; the elastic pressure increases the frictional resistance between the locking block 430 and the limiting groove 412, improving the connection rigidity under high load conditions.

[0034] Preferably, the elastic element 442 is a butterfly-shaped spring. The flat structure compresses the axial installation space and avoids interference with the transmission components; the butterfly-shaped curved surface provides non-linear elastic force, with low resistance in the initial locking stage and a sudden increase in pressure in the final locking stage, ensuring sufficient final locking force.

[0035] Furthermore, a limiting bushing 443 is provided below the elastic element 442; a connecting bearing 444 is provided at the lower end of the material bucket drive shaft 420; the limiting bushing 443 abuts against the elastic element 442 and the connecting bearing 444. This prevents flour dust from entering the bearing cavity, reducing the risk of transmission component jamming; it also provides axial positioning, fixing the relative position of the locking disc 440 and the drive flange 421, preventing linkage failure due to gravity sinking.

[0036] In this embodiment, a pin bushing 432 is rotatably fitted onto the connecting pin 431; the outer side of the pin bushing 432 abuts against the arc-shaped locking hole 441; the connecting pin 431 is a T-screw with a limit cap 4311 at its bottom; the top of the connecting pin 431 is threaded to the locking block 430, and the pin bushing 432 is located above the limit cap 4311. The bushing material reduces the sliding friction between the arc-shaped locking hole 441 and the connecting pin 431, reduces the operating torque, ensures that the connecting pin 431 does not jam when the locking disc 440 rotates, and improves the smoothness of operation. The limit cap 4311 and the pin bushing 432 cooperate to form a mechanical limit, preventing the connecting pin 431 from coming out of the arc-shaped locking hole 441.

[0037] In this embodiment, the drive flange 421 is plate-shaped, with a limiting force-applying wall structure 423 on its outer periphery. The wall surface is in full circumferential contact with the sidewall of the flange mating groove 411, distributing the rotational torque across the entire cross section and avoiding stress concentration; it has strong resistance to eccentric loads, and the rigid plate structure resists the asymmetrical impact force during the mating process, reducing the risk of flange deformation.

[0038] Specifically, the locking groove 422 is formed and extends on the outside of the drive flange 421; a flange top cover 424 is provided on the top of the drive flange 421 to cover the locking groove 422. The locking groove 422 is closed to prevent dough or water from seeping into the sliding track of the locking block 430 and causing it to jam; the inner wall of the top cover restricts the locking block 430 to slide only in the horizontal direction, preventing tilting and seizing, and providing a guiding and protective effect.

[0039] In this embodiment, the lower side cover of the drive flange 421 is provided with a lower tray 425; the lower tray 425 has a clearance groove corresponding to the movement of the connecting pin 431; the lower tray 425 abuts between the drive flange 421 and the locking plate 440; the lower tray 425 is used to fit and support the lower side of the bottom flange assembly 410. The lower tray 425 with clearance groove is provided below the drive flange 421 to bear the load and support, directly supporting the bottom flange assembly 410 and dispersing the shearing force of the material bucket's own weight on the locking block 430. It isolates contaminants, prevents flour from falling into the locking plate 440 area, and keeps the transmission interface clean.

[0040] In this embodiment, several locking blocks 430 are spaced apart along the outer periphery of the drive flange 421. The simultaneous engagement of multiple locking blocks 430 ensures a uniform distribution of driving torque, reduces the load on a single locking block 430, and maintains connection strength even if any locking block 430 fails, preventing the material bucket from detaching.

[0041] In this embodiment, the clutch transmission assembly 70 includes an upper clutch transmission shaft 71 and a lower clutch transmission shaft 72; the upper end of the upper clutch transmission shaft 71 is connected to the first transmission assembly 61, and the lower end is engaged with the lower clutch transmission shaft 72; the lower end of the lower clutch transmission shaft 72 is connected to the second transmission assembly 62.

[0042] Specifically, a clutch engagement cap 73 and a clutch drive crossbar 74 are provided at the joint between the upper clutch drive shaft 71 and the lower clutch drive shaft 72. The clutch engagement cap 73 has several vertically extending clutch slots 731 along its circumference, into which the clutch drive crossbar 74 can be engaged. The rigid connection of the clutch drive crossbar 74 embedded in the slots can stably and quickly transmit the driving torque of the first transmission component 61 and the second transmission component 62. The slots can withstand torque without deformation, making them particularly suitable for the high resistance conditions of dough mixing.

[0043] In this embodiment, two adjacent clutch slots 731 are separated by a vertically extending ratchet 732, the sidewall of which can disperse the impact energy when the stirring assembly 50 stops suddenly.

[0044] Furthermore, the top of the ratchet 732 is provided with an inclined surface that tilts in the same direction of rotation. The mechanical optimization of the inclined surface of the ratchet 732 guides the crossbar to slide into the slot, and can automatically correct its position even if the head 30 is not fully tilted down.

[0045] In this embodiment, several clutch slots 731 are provided, evenly distributed along the circumference of the clutch engagement cap 73. This effectively maintains dynamic balance, and the clutch drive crossbar 74 can slide into an adjacent clutch slot 731.

[0046] In this embodiment, the lifting component 80 is a hydraulic push rod or a pneumatic push rod, with its upper and lower ends hinged to the machine head 30 and the base 10, respectively.

[0047] In this embodiment, the machine body 20 is provided with a locking rod 21; the machine head 30 is provided with a locking block 31 facing downwards; the locking block 31 is provided with a locking hook 311; the locking rod 21 is provided with a locking part 211, and one side of the locking part 211 is a notch-shaped unlocking part 212; rotating the locking rod 21 can cause the locking hook 311 to be hooked onto the locking part 211, so that the machine head 30 and the machine body 20 are in a locked state; or, the unlocking part 212 is aligned with the locking hook 311, and the locking hook 311 can pass through the unlocking part 212 and disengage from the locking rod 21, so that the machine head 30 and the machine body 20 are in an unlocked state.

[0048] By rotating the locking rod 21 and the locking block 31 to lock or unlock, a dual-state mechanical interlock between the machine head 30 and the machine body 20 is achieved. In the locked state, the locking hook 311 and the locking part 211 cooperate to completely prevent the machine head 30 from jumping up during operation. In the unlocked state, the notch provides space for the locking block 31 to disengage, which can complete the separation action of the machine head 30.

[0049] Specifically, there are two locking blocks 31 spaced apart; the locking part 211 and the unlocking part 212 are provided with two sets of two locking blocks 31 corresponding to the two locking blocks 31. The double locking block 31 design makes the force on the hinge point even, eliminates the sway of the machine head 30 caused by single-point locking, and achieves the effect of symmetrical force distribution.

[0050] Furthermore, to facilitate the rotation of the locking lever 21, a handle 22 is connected to one side of the locking lever 21.

[0051] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A double-action head-up dough kneading machine, characterized in that, include: Base (10), machine body (20), machine head (30), material barrel body (40), material barrel, stirring assembly (50), drive motor (60), first transmission assembly (61), second transmission assembly (62), clutch transmission assembly (70) and lifting assembly (80); The machine body (20) is located at the rear of the base (10), the machine head (30) is rotatably hinged to the machine body (20), and the material bucket body (40) is located at the front of the base (10); the first transmission assembly (61) is located on the machine head (30) and connected to the stirring assembly (50), which can drive the stirring assembly (50) to rotate; the second transmission assembly (62) is located on the base (10) and connected to the material bucket body (40), which can drive the material bucket body (40) to rotate; the lifting assembly (80) is used to lift the machine head (30); The clutch transmission assembly (70) is disposed on the machine body (20), and its upper and lower ends are respectively connected to the first transmission assembly (61) and the second transmission assembly (62); when the machine head (30) is raised, the clutch transmission assembly (70) can disconnect the power transmission of the first transmission assembly (61) and the second transmission assembly (62); when the machine head (30) is lowered to the machine body (20), the clutch transmission assembly (70) can engage the power transmission of the first transmission assembly (61) and the second transmission assembly (62); The lower part of the material bucket body (40) is provided with a material bucket drive shaft (420), a locking block (430) and a locking disc (440); the bottom of the material bucket body (40) is provided with a bottom flange assembly (410); the top of the material bucket drive shaft (420) is provided with a drive flange (421); the bottom flange assembly (410) is provided with a flange mating groove (411), and the drive flange (421) can be embedded in the flange mating groove (411); the locking block (430) is slidably installed in the locking groove (422) of the drive flange (421), and the bottom flange assembly (410) is provided with a limiting groove (412) on the outer periphery of the flange mating groove (411) facing laterally; the locking block (430) can slide out of the drive flange (421) and be engaged in the limiting groove (412).

2. The double-action head-up dough mixer according to claim 1, characterized in that: A connecting pin (431) is provided below the locking block (430); the locking disc (440) is rotatably disposed on the material bucket drive shaft (420) and located below the drive flange (421); the locking disc (440) is provided with an arc-shaped locking hole (441), and the connecting pin (431) passes through the arc-shaped locking hole (441); rotating the locking disc (440) allows the connecting pin (431) to slide along the arc-shaped locking hole (441) and synchronously drive the locking block (430) to slide relative to the locking groove (422), so that the locking block (430) extends into or disengages from the limiting groove (412).

3. The double-action head-up dough mixer according to claim 2, characterized in that: An elastic element (442) is provided below the locking disc (440) for pressing the locking disc (440) upward against the drive flange (421).

4. The double-action head-up dough mixer according to claim 2, characterized in that: The connecting pin (431) is rotatably fitted with a pin bushing (432); the outer side of the pin bushing (432) can abut against the arc-shaped locking hole (441); the connecting pin (431) is a T-shaped screw with a limit cap (4311) at the bottom; the top of the connecting pin (431) is threaded to the locking block (430), and the pin bushing (432) is located above the limit cap (4311).

5. The double-action head-up dough mixer according to claim 2, characterized in that: The lower side cover of the drive flange (421) is provided with a lower tray (425); the lower tray (425) has a relief groove corresponding to the movement of the connecting pin (431); the lower tray (425) abuts between the drive flange (421) and the locking disc (440); the lower tray (425) is used to fit and support the lower side of the bottom flange assembly (410).

6. The double-action head-up dough mixer according to claim 1, characterized in that: The clutch transmission assembly (70) includes an upper clutch transmission shaft (71) and a lower clutch transmission shaft (72); the upper end of the upper clutch transmission shaft (71) is connected to the first transmission assembly (61), and the lower end is engaged with the lower clutch transmission shaft (72); the lower end of the lower clutch transmission shaft (72) is connected to the second transmission assembly (62).

7. The double-action head-up dough mixer according to claim 6, characterized in that: The upper clutch drive shaft (71) and the lower clutch drive shaft (72) are provided with a clutch engagement cap (73) and a clutch drive crossbar (74) at the joint; the clutch engagement cap (73) is provided with a plurality of vertically extending clutch slots (731) along the circumference, and the clutch drive crossbar (74) can be inserted into the clutch slots (731).

8. The double-action head-up dough mixer according to claim 7, characterized in that: The two adjacent clutch slots (731) are separated by a vertically extending ratchet (732); the top of the ratchet (732) is provided with an inclined surface that is inclined in the same direction of rotation.

9. The double-action head-up dough mixer according to claim 1, characterized in that: The body (20) is provided with a locking rod (21); the head (30) is provided with a locking block (31) facing downward; the locking block (31) is provided with a locking hook (311); the locking rod (21) is provided with a locking part (211), and one side of the locking part (211) is a notch-shaped unlocking part (212); Rotating the locking rod (21) allows the locking hook (311) to be attached to the locking part (211), thus locking the machine head (30) and the machine body (20). Alternatively, the unlocking part (212) can be made to lock the hook part (311), and the locking hook part (311) can pass through the unlocking part (212) and disengage from the locking rod (21), so that the machine head (30) and the machine body (20) are in an unlocked state.

10. The double-action head-up dough mixer according to claim 9, characterized in that: Two locking blocks (31) are spaced apart; two sets of locking parts (211) and unlocking parts (212) are provided corresponding to the two locking blocks (31).

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