Auxiliary material mixing and feeding device and hamburger production line

Abstract

The application discloses a kind of auxiliary material mixing and loading device and hamburger production line, it is related to food processing equipment technical field, including cylinder and stirring feeding mechanism;Wherein, cylinder includes upper layer cylinder part and lower layer cylinder part;Stirring feeding mechanism includes stirring feeding shaft, inner spiral blade, outer spiral blade, discharge head, discharge head bottom is equipped with discharge port, stirring feeding shaft is equipped with feeding channel, and the material in lower layer cylinder part enters discharge head by feeding channel.The application is stirred by inner spiral blade and outer spiral blade, realizes the full mixing of sauce and lettuce, so that sauce evenly wraps lettuce, improves the adhesion of lettuce, avoids the scattering of lettuce during adding;By the rotation of discharge head, mixed auxiliary material can be evenly spread on hamburger blank;When piston rises, negative pressure is formed in discharge head, and the residual auxiliary material in discharge port can be sucked back, to reduce the drop probability of auxiliary material.

Description

Technical Field

[0001] This invention relates to the field of food processing equipment technology, specifically to a material mixing and feeding device for use in hamburger production, which realizes the mixing, conveying and even spreading of sauces and shredded lettuce and other auxiliary materials. It also relates to a hamburger production line including the material mixing and feeding device. Background Technology

[0002] With the rapid development of the fast food industry, hamburgers, as a mainstream fast food product, are seeing continuous improvements in the automation of their production processes to meet the demands of large-scale, high-efficiency production. In automated hamburger production processes that include chopped vegetables such as lettuce, there are typically three core steps: bread baking, topping addition, and meat addition. Topping addition includes sauce addition and lettuce addition, and the quality of these toppings directly affects the hamburger's appearance, consistency of taste, and production efficiency.

[0003] Currently, in automated hamburger production lines, sauces and shredded lettuce are often added separately. For example, patent CN104172203A, entitled "An Automatic Hamburger Making Machine," first uses a cross-shaped rotating sauce gun mechanism to squeeze the sauce from the nozzle, and then an automatic lettuce-adding mechanism delivers the lettuce onto the hamburger. However, this separate addition method has the following prominent problems:

[0004] 1. The shredded lettuce is light and smooth, lacking sufficient adhesion. During the laying process, the shredded lettuce at the edges is easy to fall to the outside of the hamburger bun. This not only requires staff to frequently clean the production table and conveying equipment, increasing labor intensity and production downtime, but may also cause the scattered shredded lettuce to be mixed into the packaging film in the subsequent packaging process, affecting the hygiene and quality of the product.

[0005] 2. Scattered lettuce pieces will result in uneven lettuce content in the finished burger, with some areas having too much lettuce and others lacking it, which will ruin the neatness of the burger's appearance and reduce consumers' willingness to buy it.

[0006] 3. When the sauce and shredded lettuce are added separately, it is difficult for the sauce to coat the shredded lettuce evenly. This can result in some areas having too much or too little sauce. Too much sauce in one area will make the burger taste greasy, while too little sauce in another area will make the shredded lettuce taste dry, which will seriously affect the overall taste of the burger.

[0007] Therefore, there is an urgent need for a topping device that can solve the problem of scattered lettuce shreds and achieve uniform mixing and spreading of sauce and lettuce shreds, so as to improve hamburger production efficiency, product appearance and taste. Summary of the Invention

[0008] Therefore, it is necessary to provide an auxiliary material mixing and feeding device and a hamburger production line to address the above-mentioned technical problems.

[0009] To achieve the above objectives, the present invention provides an auxiliary material mixing and feeding device, including a cylinder and a stirring and feeding mechanism.

[0010] The cylinder includes an upper cylindrical section and a lower cylindrical section that are coaxially arranged and connected. The inner diameter of the upper cylindrical section is larger than that of the lower cylindrical section. The upper cylindrical section is provided with a feed inlet, through which sauce and shredded lettuce are fed into the cylinder.

[0011] The mixing and feeding mechanism includes a mixing and feeding shaft, an inner spiral blade, an outer spiral blade, and a discharge head. The mixing and feeding shaft is rotatably connected to the cylinder body. Both the inner and outer spiral blades are fixedly connected to the mixing and feeding shaft. The inner spiral blade is located inside the outer spiral blade, and the inner and outer spiral blades rotate in opposite directions. The outer spiral blade is located inside the upper cylindrical section and is adapted to the upper cylindrical section. The lower part of the inner spiral blade is located inside the lower cylindrical section and is adapted to the lower cylindrical section. The lower end of the mixing and feeding shaft extends out of the lower cylindrical section and is fixedly connected to the discharge head. The discharge head has a discharge port at its bottom. The mixing and feeding shaft is rotatably and sealingly connected to the lower cylindrical section. The mixing and feeding shaft has a feeding channel inside, and the material in the lower cylindrical section enters the discharge head through the feeding channel.

[0012] In a preferred embodiment, the auxiliary material mixing and feeding device further includes an extrusion mechanism, which includes a linear drive device and a piston. The piston is sleeved on the mixing and feeding shaft, and the piston is slidably and sealedly connected to the discharge head and the mixing and feeding shaft. The linear drive device is fixedly connected to the cylinder, and the linear drive device drives the piston to move up and down inside the discharge head to push the auxiliary material inside the discharge head toward the discharge port.

[0013] In the above technical solution, the sliding seal design of the piston, the discharge head, and the stirring and feeding shaft can prevent the leakage of auxiliary materials and facilitate the downward extrusion of auxiliary materials for discharge; the stable thrust provided by the linear drive device can ensure that the auxiliary materials are fully and evenly extruded.

[0014] In a preferred embodiment, the feeding channel includes an upper connecting port, a lower connecting port, and an internal channel connected in sequence. The upper connecting port is located inside the lower cylindrical section, and the lower connecting port is located inside the discharge head. When the piston is at the top dead center, the lower connecting port is connected to the discharge head, and the material in the lower cylindrical section can enter the discharge head through the feeding channel. When the piston is at the bottom dead center, the lower connecting port is closed, restricting the material in the lower cylindrical section from entering the discharge head through the feeding channel. When the piston rises from the bottom dead center, a negative pressure is formed inside the discharge head to draw in the residual auxiliary material around the discharge port, preventing the residual auxiliary material from dripping.

[0015] In the above technical solution, the discharge head can temporarily store a certain amount of auxiliary materials, and the piston position control can achieve precise switching between feeding, cutting off, and extrusion; the negative pressure suction design can recover the residual auxiliary materials at the discharge port, prevent dripping pollution, reduce raw material waste, and improve production hygiene.

[0016] In a preferred embodiment, the extrusion mechanism further includes a mounting base, a lifting frame, and a rotating frame. The mounting base is fixedly connected to the cylinder. A linear drive device is mounted on the mounting base, and the working end of the linear drive device is fixedly connected to the lifting frame. The rotating frame is rotatably connected to the lifting frame via a bearing. The rotating frame is sleeved around the stirring and feeding shaft and is fixedly connected to the piston. When the stirring and feeding shaft rotates, the rotating frame rotates together with the piston, the discharge head, and the stirring and feeding shaft, while the linear drive device and the lifting frame do not rotate.

[0017] The above technical solution enables the piston to rotate synchronously with the shaft and be stably driven to move up and down, significantly improving structural stability.

[0018] In a preferred embodiment, both the upper and lower connecting ports are radially formed on the mixing and feeding shaft, and a connector is sealed and fixed at the bottom of the mixing and feeding shaft. The lower end of the connector is fixedly connected to the inner wall of the bottom of the discharge head.

[0019] In the above technical solution, the radially opened upper and lower connecting ports can reduce the flow resistance of high-viscosity auxiliary materials such as thick sauces and reduce residues; the sealing and fixing design of the connecting parts can prevent the auxiliary materials from being directly discharged from the bottom of the mixing and feeding shaft, which would cause the pressure of the discharge port directly below or near the mixing and feeding shaft to increase and discharge the material, thus avoiding uneven discharge.

[0020] In a preferred embodiment, the discharge port is provided with multiple outlets, and a silicone cutting valve is installed inside the discharge port. The cutting can be in the shape of a cross, a star, or other similar shapes.

[0021] In the above technical solution, setting multiple discharge ports can expand the coverage of auxiliary materials and improve the uniformity of spreading; the silicone cutting valve closes naturally when no material is extruded, which can effectively prevent the leakage of auxiliary materials when the machine stops, and the different shapes of the cuts can be adapted to auxiliary materials of different viscosities, enhancing the compatibility of the equipment.

[0022] In a preferred embodiment, the discharge ports are arranged in a straight line. This straight-line arrangement of the discharge ports is adapted to the shape of the round or square hamburger buns, ensuring that the ingredients are evenly covered along the length of the hamburger bun, avoiding local accumulation or omissions, and improving the consistency of the product's appearance.

[0023] In a preferred embodiment, the mixing and feeding mechanism further includes a mounting frame and a rotary power source. The mounting frame is installed on the top of the cylinder, and the rotary power source is installed on the mounting frame. The rotary power source drives the mixing and feeding shaft to rotate.

[0024] The present invention also provides a hamburger production line, including any of the above-described auxiliary material mixing and feeding devices.

[0025] Compared with existing technologies, this technical solution has at least one of the following beneficial effects:

[0026] 1. By pre-mixing the sauce and shredded lettuce inside the container, the sauce can evenly coat the shredded lettuce, significantly improving the adhesion of the lettuce, preventing the lettuce from scattering during the addition process, reducing cleaning frequency, improving production efficiency, and ensuring the burger has a neat appearance.

[0027] 2. By setting inner and outer spiral blades with opposite rotation directions, the auxiliary materials can be turned up and down, so as to achieve full mixing of sauce and shredded lettuce, avoid too much or too little sauce in some places, and ensure that the taste of each burger is consistent; in addition, the inner and outer spiral blades can squeeze the auxiliary materials into the discharge head, eliminating the need for an additional conveying pump and reducing production costs.

[0028] 3. The discharge head rotates synchronously with the mixing and feeding shaft, which can evenly spread the mixed ingredients on the hamburger bun, avoid missing some ingredients in certain areas, and further improve the taste of the hamburger;

[0029] 4. When the piston rises, a negative pressure is formed inside the discharge head, which can draw back the auxiliary material remaining at the discharge port, reduce the probability of auxiliary material dripping, avoid contaminating the conveying equipment or hamburger dough, and improve the hygiene quality of the product. Attached Figure Description

[0030] Figure 1 This is an exploded view of an auxiliary material mixing and feeding device according to an embodiment of the present invention;

[0031] Figure 2 This is a perspective view of an auxiliary material mixing and feeding device according to an embodiment of the present invention;

[0032] Figure 3 This is a front view of an auxiliary material mixing and feeding device according to an embodiment of the present invention;

[0033] Figure 4 for Figure 3 A sectional view along line AA.

[0034] Figure 5 for Figure 4 A magnified view of a section at point C;

[0035] Figure 6 This is a bottom view of an auxiliary material mixing and feeding device according to an embodiment of the present invention;

[0036] 1. Cylinder body; 11. Upper cylindrical section; 12. Lower cylindrical section; 13. Feed inlet; 2. Mixing and feeding mechanism; 21. Mounting frame; 22. Rotary power source; 23. Mixing and feeding shaft; 2311. Upper connecting port; 2312. Lower connecting port; 2313. Internal channel; 24. Outer spiral blade; 25. Inner spiral blade; 26. Discharge head; 261. Discharge port; 262. Discharge chamber; 27. Connecting piece; 271. Sealing plate; 272. Connecting rod; 3. Extrusion mechanism; 31. Mounting base; 32. Linear drive device; 33. Lifting frame; 34. Rotating frame; 341. Sleeve section; 342. Plate section; 343. Rod section; 35. Piston; 351. Sliding block section; 352. Sliding sleeve section; 36. Silicone slit valve. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Please see Figures 1 to 6 This application provides an auxiliary material mixing and feeding device, including a cylinder 1 and a stirring and feeding mechanism 2.

[0039] The cylinder 1 provides a space for containing and mixing the auxiliary materials, which are sauces and shredded lettuce. The cylinder 1 is made of 316 food-grade stainless steel to prevent contamination of the auxiliary materials. The cylinder 1 includes an upper cylindrical section 11 and a lower cylindrical section 12 that are coaxially arranged and interconnected.

[0040] Please see Figures 1 to 4 The inner diameter of the upper cylindrical part 11 is larger than the inner diameter of the lower cylindrical part 12. The upper cylindrical part 11 is used to contain the sauce and chopped lettuce to be mixed, so as to achieve thorough mixing.

[0041] The lower cylindrical section 12 is used to guide the mixed auxiliary materials to gather towards the center, which facilitates transportation.

[0042] The top side wall or top end face of the upper cylindrical part 11 is provided with a feeding port 13. In this embodiment, it is preferable to provide the feeding port 13 on the top end face. The feeding port 13 is funnel-shaped, wider at the top and narrower at the bottom, which facilitates the addition of sauce and chopped lettuce into the cylinder 1. A flip-top can be added to the feeding port 13 to prevent the auxiliary materials from splashing during the stirring process.

[0043] The mixing and feeding mechanism 2 includes a mounting frame 21, a reversible rotary power source 22, a mixing and feeding shaft 23, an outer spiral blade 24, an inner spiral blade 25, and a discharge head 26.

[0044] The mounting bracket 21 is fixed to the top of the upper cylindrical part 11 by bolts or welding. The rotation power source 22 is a servo motor with forward and reverse rotation control. The speed is adjustable. It is driven by the mixing and feeding shaft 23 through a coupling, and the forward and reverse rotation modes can be switched precisely.

[0045] The mixing and feeding shaft 23 is made of 316 food-grade stainless steel and is set along the axis of the cylinder 1. Its upper end is rotatably connected to the mounting bracket 21 via a bearing, and its lower end extends into the lower cylindrical section 12. The mixing and feeding shaft 23 and the lower cylindrical section 12 are sealed by a lip seal to prevent leakage of auxiliary materials.

[0046] Please see Figure 4 and Figure 5 The mixing and feeding shaft 23 is provided with a feeding channel, which includes an upper connecting port 2311, a lower connecting port 2312 and an internal channel 2313.

[0047] Among them, there are 4 upper connecting ports 2311, which are radially opened in the area inside the lower cylindrical part 12 of the mixing and feeding shaft 23, close to the bottom end of the lower cylindrical part 12, and evenly distributed in the circumferential direction, for receiving the mixed auxiliary materials in the lower cylindrical part 12.

[0048] The lower connecting port 2312 and the upper connecting port 2311 are also set to 4, which are radially opened in the area of ​​the mixing and feeding shaft 23 located inside the discharge head 26, and are used to transport the auxiliary materials to the discharge port 261 of the discharge head 26.

[0049] Both the upper connecting port 2311 and the lower connecting port 2312 are circular with a diameter of 10-40mm, preferably 20mm.

[0050] The internal channel 2313 is located inside the mixing and feeding shaft 23, with its top located at and connected to the upper connecting port 2311, and its bottom located at and connected to the lower connecting port 2312.

[0051] The inner spiral blade 25 and the outer spiral blade 24 have opposite spiral directions. For example, if the outer spiral blade 24 is right-handed, then the inner spiral blade 25 is left-handed. There are two outer spiral blades 24, and the inner spiral blade 25 and the outer spiral blade 24 are fixedly connected to the mixing and feeding shaft 23.

[0052] The outer diameter of the outer spiral blade 24 is adapted to the inner wall of the upper cylindrical part 11 with a gap of ≤2mm, and is used to drive the upper auxiliary material to flow along the cylinder wall.

[0053] The upper part of the inner spiral blade 25 is located inside the upper cylindrical part 11 and is roughly flush with the top of the outer spiral blade 24. The lower part of the inner spiral blade 25 is located inside the lower cylindrical part 12. The outer diameter of the inner spiral blade 25 is adapted to the inner wall of the lower layer with a gap of ≤2mm, which is used to drive the lower auxiliary material to flow along the axis center.

[0054] The connector 27 includes a sealing plate 271 for sealing the bottom of the internal channel 2313 and a connecting rod 272 fixed to the lower end of the sealing plate 271. The sealing plate 271 is welded to the bottom end of the mixing and feeding shaft 23, and the lower end of the connecting rod 272 is fixedly connected to the bottom end of the discharge head 26 by welding or bolting. The connector 27 enables synchronous rotation of the mixing and feeding shaft 23 and the discharge head 26.

[0055] Please see Figures 1 to 4 The discharge head 26 is approximately rectangular in shape and made of 316 food-grade stainless steel. It has five discharge ports 261 at the bottom, with a diameter of 10-30mm, preferably 20mm, to ensure even discharge of auxiliary materials. For example, one discharge port 261 is located directly below the mixing and feeding shaft 23, and two discharge ports 261 are located on each side of the mixing and feeding shaft 23. The discharge ports 261 are arranged in a straight line, suitable for automated production of round or square hamburger buns. During discharge, the hamburger is moved directly below the mixing and feeding shaft 23, so that the discharge area after the discharge ports 261 rotate can fully cover the hamburger, allowing for even delivery of auxiliary materials.

[0056] In this embodiment, the PLC controller on the hamburger production line is electrically connected to each electrical component of this device, and the electrical components are controlled to operate electrically according to the program to carry out the mixing and feeding of auxiliary materials.

[0057] During operation, the auxiliary materials are first mixed. The stirring and feeding shaft 23 is rotated forward at a speed of 15-25 r / min. The feed port 13 is opened, and the sauce and chopped lettuce are added in proportion. The sauce can be salad dressing. When the rotating power source 22 drives the stirring and feeding shaft 23 to rotate forward, the outer spiral blade 24 generates a downward thrust, pushing the auxiliary materials at the edge of the upper cylindrical part 11 to the lower center. The inner spiral blade 25 generates an upward thrust, pushing the auxiliary materials in the lower cylindrical part 12 and the center of the upper cylindrical part 11 to the upper center of the upper cylindrical part 11, forming a high-level convection circulation to avoid the stratification of auxiliary materials, such as the sauce settling to the bottom and the chopped lettuce floating to the top. After stirring for 4-6 minutes, the mixture is evenly mixed.

[0058] Then, the auxiliary materials are fed in. The rotating power source 22 drives the mixing and feeding shaft 23 to reverse the preset angle, such as 1080 degrees, with a speed of 10-18 r / min. The outer spiral blade 24 generates an upward thrust, and the inner spiral blade 25 generates a downward thrust, pushing the uniformly mixed auxiliary materials in the lower layer to the upper connecting port 2311, and then through the internal channel 2313 and the lower connecting port 2312 into the discharge head 26. Finally, the materials are discharged from the discharge port 261 onto the hamburger buns, realizing directional conveying.

[0059] After mixing, the sauce evenly coats the shredded lettuce, improving adhesion and reducing spillage, thus decreasing cleaning frequency. Furthermore, the inner spiral blades 25 generate downward thrust for discharging, eliminating the need for an additional conveying pump and reducing production costs.

[0060] This device is suitable for viscous additives after mixing. After the mixing and feeding shaft 23 stops rotating, the inner spiral blades 25 no longer exert downward force on the additives. Due to the high viscosity of the additives, they will not drip down in a short time under the action of gravity. By quickly moving the next hamburger bun into place, dripping of the additives can be avoided.

[0061] In some embodiments, please refer to Figures 1 to 6 It can also be equipped with an extrusion mechanism 3, which includes a mounting base 31, a linear drive device 32, a lifting frame 33, a rotating frame 34, and a piston 35.

[0062] The mounting base 31 is fixed to the lower part of the lower cylindrical part 12 by bolts, and is used to fix the linear drive device 32.

[0063] The linear drive device 32 is an electric push rod or cylinder with stroke control. The working end of the linear drive device 32 is fixedly connected to the lifting frame 33, which can drive the lifting frame 33 to move up and down reciprocally in the vertical direction.

[0064] Please see Figure 4 The rotating frame 34 is rotatably connected to the lifting frame 33 via two oppositely arranged tapered roller bearings; the rotating frame 34 is sleeved around the mixing and feeding shaft 23, and the lower end of the rotating frame 34 is fixedly connected to the piston 35; when the mixing and feeding shaft 23 drives the discharge head 26 to rotate, the rotating frame 34 rotates synchronously with the piston 35 and the discharge head 26, and the lifting frame 33 remains fixed to the linear drive device 32, so that the linear drive device 32 can drive the piston 35 in the rotating state to perform lifting and lowering movements;

[0065] Please see Figure 5The rotating frame 34 includes a sleeve portion 341, a plate portion 342, and a rod portion 343 arranged sequentially from top to bottom. The sleeve portion 341 is coaxially sleeved around the stirring and feeding shaft 23. The lower end of the sleeve portion 341 is fixedly connected to the plate portion 342. Two rod portions 343 are fixedly fixed to the lower end of the plate portion 342. The lower ends of the rod portions 343 are fixedly connected to the top end of the piston 35. The top end of the discharge head 26 has an opening for the rod portions 343 to pass through and connect with the piston 35.

[0066] Please see Figure 5 The piston 35 is made of 316 food-grade stainless steel. The piston 35 includes a slider part 351 and a sliding sleeve part 352. The contour of the slider part 351 is adapted to the inner contour of the discharge head 26 with a gap of ≤1mm. The outer wall of the slider part 351 is provided with a food-grade nitrile rubber O-ring to achieve sliding seal with the inner wall of the discharge head 26. The inner wall of the sliding sleeve part 352 is also provided with a food-grade nitrile rubber O-ring to achieve sliding seal with the outer wall of the mixing and feeding shaft 23. The piston 35 and the inner wall of the discharge head 26 together form the discharge chamber 262. The volume of the discharge chamber 262 meets the amount of hamburger toppings for a single batch. The top of the discharge head 26 has an opening for the sliding sleeve part 352 to move.

[0067] It should be noted that when the piston 35 rises to the top dead center, the lower connecting port 2312 is connected to the discharge chamber 262. The stirring and feeding shaft 23 drives the inner spiral blade 25 to rotate. The inner spiral blade 25 presses the mixed auxiliary material into the upper connecting port 2311, and then flows into the discharge chamber 262 through the internal channel 2313 and the lower connecting port 2312 to complete the material storage.

[0068] After the mixing and feeding shaft 23 rotates to a first preset angle, such as 1080 degrees, the piston 35 begins to descend and gradually closes the lower connecting port 2312. The pressure in the discharge chamber 262 increases, and the auxiliary material is evenly extruded under the pressure and covers the hamburger bun from the discharge port 261. During this period, the mixing and feeding shaft 23 continues to rotate to a second preset angle, such as 360 degrees, and the discharge port 261 spreads the auxiliary material evenly on the hamburger bun in a circular motion.

[0069] Before piston 35 descends to the lower dead center, piston 35 has already closed the lower connecting port 2312 to prevent the auxiliary material from continuing to flow in; when piston 35 descends to the lower dead center, stirring and feeding shaft 23 also stops rotating, and the bottom end of piston 35 is in contact with the inner wall of the bottom end of discharge head 26, completing the operation of squeezing the auxiliary material in discharge chamber 262 out of discharge port 261.

[0070] When the piston 35 rises from the bottom dead center, the volume inside the discharge chamber 262 increases, creating a negative pressure that draws the residual auxiliary material around the discharge port 261 into the discharge chamber 262, thus achieving the anti-drip function.

[0071] After piston 35 rises to the top dead center, it enters the next round of material storage, and the cycle continues.

[0072] In this embodiment, the extrusion mechanism 3 provides stable extrusion pressure, which can improve the uniformity of the auxiliary material spreading.

[0073] The negative pressure suction design greatly reduces the amount of residual auxiliary material at the outlet 261, preventing auxiliary material from dripping, eliminating the need for frequent cleaning, and improving the pass rate of hamburger products; the auxiliary material mixing and feeding device in this embodiment is applicable to both viscous and diluted mixed auxiliary materials.

[0074] In some embodiments, please refer to Figure 1 , Figure 5 and Figure 6 Since the outlet 261 is relatively large, in order to further prevent the auxiliary material from dripping from the outlet 261, a food-grade silicone cutting valve 36 is fixedly installed in each outlet 261. Specifically, by opening an annular groove on the inner wall of the outlet 261, the upper flange of the silicone cutting valve 36 is clamped in the annular groove, which can achieve the fixation of the silicone cutting valve 36.

[0075] The cut shape of the silicone cut valve 36 can be either cross-shaped or star-shaped, depending on the viscosity of the excipient. For example, a cross-shaped cut is selected for high viscosity, and a star-shaped cut is selected for low viscosity. In this embodiment, the cut shape is preferably cross-shaped. The cut of the silicone cut valve 36 is closed in its natural state to prevent leakage of excipients when the machine stops. When the excipient is extruded, the cut opens under pressure, so that the excipient flows out evenly.

[0076] This invention also provides a hamburger production line, including the ingredient mixing and feeding device of any of the above embodiments. This hamburger production line has all the beneficial effects of the above-described ingredient mixing and feeding device, which will not be elaborated further here.

[0077] It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the scope of protection of this invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0078] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. An auxiliary material mixing and feeding device, characterized in that, The device comprises a barrel, a stirring and feeding mechanism, and an extrusion mechanism. The barrel comprises an upper cylindrical part and a lower cylindrical part arranged coaxially and in communication, the inner diameter of the upper cylindrical part is larger than that of the lower cylindrical part, and a feeding port is arranged on the upper cylindrical part. The stirring and feeding mechanism comprises a stirring and feeding shaft, an inner helical blade, an outer helical blade, and a discharge head, the stirring and feeding shaft is rotationally connected with the barrel, the inner helical blade and the outer helical blade are fixedly connected with the stirring and feeding shaft, the inner helical blade is located inside the outer helical blade, the rotation directions of the inner helical blade and the outer helical blade are opposite, the outer helical blade is located in the upper cylindrical part and is adapted to the upper cylindrical part, the lower part of the inner helical blade is located in the lower cylindrical part and is adapted to the lower cylindrical part, the lower end of the stirring and feeding shaft extends out of the lower cylindrical part and is fixedly connected with the discharge head, a discharge port is arranged at the bottom of the discharge head, the stirring and feeding shaft is rotationally and sealingly connected with the lower cylindrical part, a feeding channel is arranged in the stirring and feeding shaft, and the material in the lower cylindrical part enters the discharge head through the feeding channel. The extrusion mechanism comprises a linear driving device and a piston, the piston is sleeved on the stirring and feeding shaft, the piston is slidingly and sealingly connected with the discharge head and the stirring and feeding shaft, the linear driving device is fixedly connected with the barrel, and the linear driving device drives the piston to move up and down in the discharge head to push the auxiliary material in the discharge head to the discharge port. The feeding channel comprises an upper communication port, a lower communication port, and an internal channel which are sequentially connected in communication, the upper communication port is located inside the lower cylindrical part, and the lower communication port is located inside the discharge head; when the piston is located at the upper dead point, the lower communication port is in communication with the discharge head, and the material in the lower cylindrical part can enter the discharge head through the feeding channel; when the piston is located at the lower dead point, the lower communication port is closed, and the material in the lower cylindrical part is restricted from entering the discharge head through the feeding channel; when the piston rises from the lower dead point, a negative pressure is formed in the discharge head to suck the residual auxiliary material around the discharge port into the discharge head.

2. The auxiliary material mixing and feeding device according to claim 1, characterized in that, The extrusion mechanism further comprises a mounting seat, a lifting frame, and a rotating frame, the mounting seat is fixedly connected with the barrel, the linear driving device is mounted on the mounting seat, the working end of the linear driving device is fixedly connected with the lifting frame, the rotating frame is rotationally connected with the lifting frame through a bearing, the rotating frame is sleeved on the periphery of the stirring and feeding shaft, and the rotating frame is fixedly connected with the piston.

3. The auxiliary material mixing and feeding device according to claim 1, characterized in that, The upper communication port and the lower communication port are both radially arranged on the stirring and feeding shaft, a connecting piece is sealingly and fixedly arranged at the bottom end of the stirring and feeding shaft, and the lower end of the connecting piece is fixedly connected with the inner wall at the bottom end of the discharge head.

4. The auxiliary material mixing and feeding device according to claim 1, characterized in that, The piston comprises a sliding block part and a sliding sleeve part, the sliding block part is slidingly and sealingly connected with the inner wall of the discharge head, and the sliding sleeve part is slidingly and sealingly connected with the outer wall of the stirring and feeding shaft.

5. The auxiliary material mixing and feeding device according to claim 1, characterized in that, A plurality of discharge ports are arranged, and a silica gel cut valve is mounted in each discharge port.

6. The auxiliary material mixing and feeding device according to claim 5, characterized in that, The discharge ports are arranged in a straight line.

7. The auxiliary material mixing and feeding device according to claim 1, characterized in that, The stirring and feeding mechanism further comprises a mounting frame and a rotating power source, the mounting frame is mounted on the top end of the barrel, the rotating power source is mounted on the mounting frame, and the rotating power source drives the stirring and feeding shaft to rotate.

8. A hamburger production line, characterized in that, The device comprises the auxiliary material mixing and feeding device according to any one of claims 1 to 7.

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