Auxiliary material collaborative feeding device and hamburger production line

Abstract

The invention discloses an auxiliary material collaborative feeding device and a hamburger production line, and relates to the technical field of food machinery. The auxiliary material collaborative feeding device comprises a rack and a sauce conveying mechanism; the sauce conveying mechanism comprises an inner cylinder, an outer cylinder, a piston, a first linear execution element and a second linear execution element, the outer cylinder fixedly sleeves the periphery of the inner cylinder, and a storage cavity for storing sauce is formed between the outer cylinder and the inner cylinder; the upper end of the inner cylinder is provided with a feed port, and the lower end is provided with a discharge port; jet holes communicated with the material storage cavity are formed in the cylinder wall of the inner cylinder body and are uniformly distributed in the circumferential direction; the piston is installed in the material storage cavity in a sliding and sealing mode. Sauce is sprayed to the surface of a hamburger blank through the spraying holes to form a basic sauce layer, then the sauce is sprayed for the second time when vegetables fall to wrap the vegetables, especially the edge areas of the vegetables, the adhesive force of the vegetables on the hamburger is greatly improved, the vegetables are limited through the inner barrel, the falling point of the vegetables is controlled, and scattering of the vegetables in the transportation and subsequent packaging process is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food machinery, in particular to a kind of auxiliary material collaborative feeding device and hamburger production line. BACKGROUND

[0002] With the rapid development of fast food industry, as a typical representative product, the automation degree of hamburger production process is continuously improved to meet the production needs of large scale, high efficiency and standardization. The automated hamburger production line usually includes bread baking station, auxiliary material adding station and meat adding station, etc., wherein the auxiliary material adding station needs to accurately and uniformly lay sauce, salad and other vegetable auxiliary materials on the hamburger blank. The auxiliary material adding quality directly determines the appearance regularity, taste consistency of hamburger and the stability and hygiene of production line operation.

[0003] In the prior art, sauce and salad are usually added separately. For example, the "hamburger automatic making machine" with publication number CN104172203A extrudes sauce through a cross-rotating sauce gun mechanism, and then an automatic vegetable adding mechanism delivers salad to the hamburger. Although this structure can realize basic automation, it has the following problems: The salad is light in texture, smooth and loose on the surface, and in the laying process, the salad at the edge area is easy to scatter from the hamburger blank to the outside, which not only requires the operator to frequently clean the production table and conveyor belt, increasing the labor intensity and production downtime, but also easily causes the scattered salad to mix into the packaging film in the subsequent packaging process, affecting the product hygiene quality and appearance.

[0004] The scattering of salad causes uneven distribution of salad in the hamburger finished product, with excessive salad in some areas and almost no salad in some areas, which destroys the overall appearance and taste consistency of the hamburger and reduces the willingness of consumers to purchase.

[0005] To improve the above problems, the "auxiliary material mixing and feeding device and hamburger production line" with publication number CN120919874A proposes to pre-mix sauce and salad in a barrel, then press and deliver them through an inner spiral blade and spread them on the hamburger blank through a discharge head, so that the sauce wraps the salad to improve the adhesion and reduce the scattering. This scheme improves the salad scattering problem to some extent, but it needs to pre-mix the sauce and salad before adding, which takes a long time in the mixing process, and to ensure smooth delivery, the salad must be fully pulverized into small particles, otherwise it is easy to cause blockage at the discharge head, which is difficult to handle long strip vegetables or large particle vegetable auxiliary materials, and the scope of application is limited.

[0006] Therefore, it is necessary to provide an auxiliary material collaborative feeding device and hamburger production line, which realizes the orderly feeding of vegetable material and sauce without pre-mixing the sauce and vegetable material, improves the adhesion of vegetable material on the hamburger and the laying quality. SUMMARY

[0007] The present application aims to overcome the defects of the prior art that separate addition of sauce and vegetable material leads to easy scattering of vegetable material, uneven distribution, and large limitation of pre-mixed structure on the shape of vegetable material, and provides a sauce and vegetable material collaborative feeding device and a hamburger production line, so that the sauce is reasonably sprayed and coated before and after the vegetable material falls, especially the adhesion of the edge area of the vegetable material is enhanced, and at the same time, the falling point of the vegetable material is limited through the cylinder structure, thereby reducing the scattering and waste of lettuce or other vegetable material in the production process, improving the uniformity and appearance regularity of the hamburger auxiliary material laying, and adapting to various shapes of vegetable material such as long strips and sheets.

[0008] In order to achieve the above-mentioned purpose, on the one hand, the present application provides a sauce and vegetable material collaborative feeding device, comprising: a rack; a sauce feeding mechanism comprising an inner cylinder, an outer cylinder, a piston, a first linear actuator and a second linear actuator: wherein the outer cylinder is fixedly sleeved on the periphery of the inner cylinder, and a storage cavity for storing sauce is formed between the two; the upper end of the inner cylinder is provided with a feeding port, and the lower end is provided with a discharging port; a spraying hole communicating with the storage cavity is arranged on the cylinder wall of the inner cylinder, and the spraying hole is uniformly distributed in the circumferential direction; the piston is slidingly and sealingly installed in the storage cavity; the first linear actuator can drive the piston to descend axially in the storage cavity, and when the piston descends, the sauce in the storage cavity is pressed out of the spraying hole to the inside of the inner cylinder, and finally discharged from the discharging port; when the vegetable material is added into the inner cylinder, the sprayed sauce contacts the falling vegetable material to bond the vegetable material and limit the loosening of the vegetable material; the second linear actuator is installed on the rack and is used to drive the whole sauce feeding mechanism to ascend and descend, so that the lower end of the inner cylinder can descend above the hamburger blank and close to the hamburger blank when working.

[0009] Preferably, the sauce and vegetable material collaborative feeding device further comprises: a vegetable material feeding mechanism for quantitatively and continuously feeding the vegetable material into the inner cylinder, the vegetable material feeding mechanism comprising a rotary power element, a conveying cylinder, a driving shaft, a spiral blade, a storage hopper and a discharging cylinder; wherein: the rotary power element and the conveying cylinder are fixedly connected with the rack; the driving shaft is coaxially rotatably connected with the conveying cylinder and is drivingly connected with the output end of the rotary power element; the spiral blade is arranged in the conveying cylinder and is fixedly connected with the driving shaft in a coaxial manner, and is used to push the vegetable material to be conveyed in the direction of the conveying cylinder; the lower end of the conveying cylinder is fixedly connected with the discharging cylinder which communicates with the conveying cylinder; The conveying cylinder is horizontally arranged, the discharging cylinder is vertically arranged, the axis of the discharging cylinder is parallel to the axis of the inner cylinder body, and the lower end of the discharging cylinder extends into the feeding port, so that the vegetable material output by the vegetable material conveying mechanism is guided into the inner cavity of the inner cylinder body and falls along the axis of the inner cylinder body; The upper end of the conveying cylinder away from the side of the discharging cylinder is also fixed with a storage hopper in communication with the conveying cylinder, for storing the vegetable material to be conveyed.

[0010] Preferably, in order to improve the stability and anti-blocking performance of the sauce injection process, a scraping and blocking cylinder is arranged in the inner cylinder body, the scraping and blocking cylinder is fixedly connected with the discharging cylinder and is in contact with the inner wall of the inner cylinder body; wherein: When the inner cylinder body is at the top dead center, the scraping and blocking cylinder closes the injection hole to prevent the sauce from flowing out of the injection hole in disorder; When the inner cylinder body is at the bottom dead center, the scraping and blocking cylinder is located above the injection hole, so that the injection hole is in an open state, which is beneficial to the smooth injection of the sauce. When the sauce conveying mechanism rises, the scraping and blocking cylinder scrapes off the residual sauce near the injection hole, reducing the accumulation of material.

[0011] Preferably, the injection hole is provided with multiple layers from top to bottom along the axis of the inner cylinder body, and the injection holes in each layer are arranged in a staggered manner in the circumferential direction to form a relatively uniform annular injection surface, which is beneficial to the formation of a coating layer of the sauce on the inner wall of the inner cylinder body, thereby realizing sufficient adhesion during the falling of the vegetable material.

[0012] Preferably, the sauce conveying mechanism further comprises a lifting frame, the mounting end of the first linear actuator, the output end of the second linear actuator, and the outer cylinder body are fixedly connected with the lifting frame, and the second linear actuator drives the lifting frame and the sauce conveying mechanism mounted thereon to rise and fall as a whole, which has a compact structure.

[0013] Preferably, the upper end of the piston is fixed with a push rod, the upper end of the push rod is fixed with a push plate, the output end of the first linear actuator is provided with an elastic member such as a compression spring or a spring shock absorber, the elastic member is connected with the push plate, and the elastic member absorbs impact and provides a rebound force, so that the piston moves more smoothly at the end of the stroke, thereby improving the stability of the injection and prolonging the service life of the mechanism.

[0014] The piston is fixed with a sauce adding pipe and a venting pipe, both of which are in communication with the storage cavity. The top of the sauce adding pipe and the venting pipe is detachably and sealingly provided with a plug. The sauce adding pipe and the venting pipe are fixedly connected with the push plate. The sauce adding pipe is a dedicated material supplementing channel for the storage cavity. After the plug at the top of the sauce adding pipe and the venting pipe is removed, the sauce is supplemented into the storage cavity through the sauce adding pipe, and the air in the storage cavity is discharged through the venting pipe. The plug can be a threaded sealing plug. After the material is supplemented, the sauce adding pipe and the venting pipe are sealed, which prevents the overflow of the sauce due to the pressure generated by the lifting of the piston, prevents dust and impurities from entering the storage cavity, and meets the food hygiene standards.

[0015] The sauce adding pipe and the emptying pipe are fixedly connected with the push plate, the connecting strength of the push plate and the piston can be improved, the force on the push rod is avoided from being too large, and the piston moves more stably.

[0016] By introducing clean gas with certain pressure into the sauce adding pipe and / or the emptying pipe, the sauce in the storage cavity is pressed out from the injection hole, the sauce utilization rate is improved, and waste caused by too much sauce remaining and unable to be pressed out by the piston is avoided.

[0017] When the storage cavity needs to be cleaned, high-pressure clean water or food-grade cleaning agent is injected into the sauce adding pipe and / or the emptying pipe, and the sewage and residual sauce can be quickly discharged through the injection hole.

[0018] Preferably, the inner cylinder body is coaxially fixedly connected with the outer cylinder body, the storage cavity is a ring-shaped cavity, and the injection hole is uniformly arranged in the ring direction to ensure the consistency of the sauce in the circumferential injection.

[0019] Preferably, the outer cylinder body comprises a large-diameter cylinder body part located at the upper portion and a small-diameter cylinder body part located at the lower portion, the inner diameter of the large-diameter cylinder body part is larger than that of the small-diameter cylinder body part, the injection hole is located on the inner side of the small-diameter cylinder body part and below the large-diameter cylinder body part, and the piston moves in the large-diameter cylinder body part. Through the large-small diameter cylinder body structure, on the one hand, the upper storage space is increased, and on the other hand, the cross-sectional size of the injection area is reduced, so that stable injection pressure is formed, and the piston does not block the injection hole.

[0020] On the other hand, the application also provides a hamburger production line comprising the above-mentioned auxiliary material cooperative feeding device.

[0021] Compared with the prior art, the application has the following beneficial effects: 1. By spraying sauce before the vegetable material falls on the hamburger blank, a basic sauce layer is formed on the surface of the hamburger blank; by spraying sauce when the vegetable material falls, the sauce coats the vegetable material, especially the edge area, greatly improving the adhesion of the vegetable material on the hamburger, and significantly reducing the scattering of the vegetable material during transportation and subsequent packaging; 2. The inner cylinder body moves downward and approaches the hamburger blank during work, the falling vegetable material is limited in the lower end area of the inner cylinder body, the falling point of the vegetable material is controlled, scattering to the outside is avoided, and the vegetable material mainly falls on the effective area of the hamburger blank, which is beneficial to the regular appearance of the finished product. 3. The sauce and the vegetable material do not need to be mixed in advance in the equipment, but are contacted and coated online during the natural falling process of the vegetable material, which is suitable for various forms of vegetables such as fragments, strips or pieces, and no longer requires the vegetable material to be crushed into extremely small particles, reduces the processing procedure, and avoids the problem that the traditional mixing and conveying structure cannot smoothly convey long strip-shaped vegetables. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The auxiliary material cooperative feeding device and the hamburger production line provided by the embodiments of the application are shown in the perspective view. Figure 2 The right view of the auxiliary material cooperative feeding device and the hamburger production line provided by the embodiment of the application is shown in the figure; Figure 3 The auxiliary material cooperative feeding device provided by the embodiment of the application is shown in the figure; Figure 2 The cross-sectional view along the line A-A in the figure; Figure 4 The auxiliary material cooperative feeding device provided by the embodiment of the application is shown in the figure; Figure 3 The enlarged view of the part B in the figure; Figure 5 The explosion schematic view of the sauce delivery mechanism provided by the embodiment of the application (omitting the first linear actuator, the second linear actuator and the lifting frame) is shown in the figure; Figure 6 The working state diagram of the auxiliary material cooperative feeding device provided by the embodiment of the application (the inner cylinder is at the lower dead point) is shown in the figure; In the figure, 100, the rack; 200, the sauce delivery mechanism; 201, the inner cylinder; 2011, the feeding port; 2012, the discharging port; 2013, the injection hole; 202, the outer cylinder; 2021, the thick cylinder part; 2022, the thin cylinder part; 203, the piston; 2031, the first sealing ring; 2032, the second sealing ring; 204, the first linear actuator; 205, the second linear actuator; 206, the lifting frame; 207, the storage cavity; 208, the scraping and blocking cylinder; 2081, the third sealing ring; 2082, the fourth sealing ring; 209, the push rod; 210, the push plate; 211, the elastic member; 212, the sauce adding pipe; 213, the emptying pipe; 214, the plug; 215, the vertical rod; 300, the vegetable material delivery mechanism; 301, the rotary power element; 302, the delivery cylinder; 303, the driving shaft; 304, the helical blade; 305, the storage hopper; 306, the discharging cylinder. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objectives, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the concept of the application, so the application is not limited by the specific embodiments disclosed below.

[0024] Please refer to Figures 1 to 6 The embodiment of the application provides an auxiliary material cooperative feeding device, which comprises a rack 100 and a sauce delivery mechanism 200.

[0025] Among them, the sauce delivery mechanism 200 comprises an inner cylinder 201, an outer cylinder 202, a piston 203, a first linear actuator 204, a second linear actuator 205 and a lifting frame 206.

[0026] The outer cylinder 202 is fixedly sleeved outside the inner cylinder 201, and the two are coaxially arranged, and a storage cavity 207 for storing sauce is formed between the two; The upper end of the inner cylinder 201 is provided with a feeding port 2011, and the lower end is provided with a discharging port 2012, and the inner diameter of the discharging port 2012 is the same as the inner diameter of the inner cylinder 201, that is, the inside of the discharging port 2012 is not shielded, so as to ensure the smooth discharge of the auxiliary material; The inner cylinder 201 is provided with a plurality of injection holes 2013 in communication with the storage cavity 207, and the diameter of the injection hole 2013 is 1 mm. The injection holes 2013 are uniformly distributed in the circumferential direction, and the included angle between adjacent injection holes 2013 is 12°. Each injection hole 2013 is directed towards the central axis of the inner cylinder 201; The piston 203 is slidingly sealed and installed in the storage cavity 207. The piston 203 has an annular structure. An outer ring groove is arranged on the outer wall of the piston 203. A first sealing ring 2031 is arranged on the outer ring groove and is in sliding sealing connection with the inner wall of the outer cylinder 202. An inner ring groove is arranged on the piston 203. A second sealing ring 2032 is arranged on the inner ring groove and is in sliding sealing connection with the outer wall of the inner cylinder 201; The first linear actuator 204 drives the piston 203 to move downward along the axis of the storage cavity 207. When the piston 203 moves downward, the sauce in the storage cavity 207 is pressed out through the injection holes 2013 and into the inner cylinder 201, and finally discharged through the discharging port 2012. The first linear actuator 204 is selected from an electric cylinder, a servo-controlled air cylinder, a servo-controlled hydraulic cylinder, or other linear actuators that can accurately drive the piston 203 to move downward along the axis of the storage cavity 207 by a predetermined distance, thereby controlling the amount of sauce sprayed. The mounting end of the first linear actuator is the cylinder body thereof; When the inner cylinder 201 is filled with ingredients, the sprayed sauce contacts the falling ingredients to bond the ingredients and prevent them from becoming loose; The second linear actuator 205 is mounted on the rack 100 and is used to drive the entire sauce conveying mechanism 200 to move up and down, so that the lower end of the inner cylinder 201 can be lowered above the hamburger bun and close to the hamburger bun during operation. The second linear actuator 205 is selected from an air cylinder, a hydraulic cylinder, an electric cylinder, or other linear actuators that can drive the sauce conveying mechanism 200 to move linearly; The mounting end of the first linear actuator 204, the output end of the second linear actuator 205, and the outer cylinder 202 are fixedly connected with the lifting frame 206. The second linear actuator 205 drives the lifting frame 206 and the sauce conveying mechanism 200 mounted thereon to move up and down as a whole.

[0027] In some embodiments, to quantitatively and continuously feed the ingredients into the inner cylinder 201, a food ingredient conveying mechanism 300 is further provided. Please refer to Figures 1 to 3The vegetable conveying mechanism 300 comprises a rotating power element 301, a conveying cylinder 302, a driving shaft 303, a spiral blade 304, a storage hopper 305 and a discharging cylinder 306.

[0028] The rotating power element 301 and the conveying cylinder 302 are fixedly connected with the rack 100. The driving shaft 303 is coaxially arranged with the conveying cylinder 302, the conveying cylinder 302 is fixedly connected with a bearing seat, the driving shaft 303 is installed in the bearing in the bearing seat, and rotation connection with the conveying cylinder 302 is realized; the rotating power element 301 is a stepping motor, and the output end of the rotating power element 301 is connected with the driving shaft 303 through a shaft coupling. The spiral blade 304 is arranged in the conveying cylinder 302 and coaxially fixedly connected with the driving shaft 303, and is used for pushing the vegetable along the conveying cylinder 302. The conveying cylinder 302 is fixedly connected with the discharging cylinder 306 in communication, the discharging cylinder 306 is used for guiding the vegetable pushed by the spiral blade 304 out; The conveying cylinder 302 is horizontally arranged, the discharging cylinder 306 is vertically arranged, the discharging cylinder 306 is a straight cylinder, the axis line of the discharging cylinder 306 is arranged in parallel with the axis line of the inner cylinder body 201, and the lower end of the discharging cylinder 306 extends into the feeding port 2011, so that the vegetable output by the vegetable conveying mechanism 300 is guided into the inner cavity of the inner cylinder body 201 and falls along the inner cylinder body 201 in the axial direction. The upper end of the conveying cylinder 302 is further fixedly connected with the storage hopper 305 in communication, the conveying cylinder 302 and the storage hopper 305 are vertically arranged, and the storage hopper 305 is used for storing the vegetable to be conveyed.

[0029] Through the above structure, the vegetable is pushed by the spiral blade 304 along the conveying cylinder 302 under the driving of the rotating power element 301, enters the inner cavity of the inner cylinder body 201 through the discharging cylinder 306, and falls along the inner cylinder body 201 in the axial direction; the storage hopper 305 continuously supplements the vegetable to the conveying cylinder 302.

[0030] In some embodiments, in order to improve the stability and anti-blocking performance of the sauce spraying process, please refer to Figures 3 to 6, the inner cylinder 201 is provided with a scraping and blocking cylinder 208, the scraping and blocking cylinder 208 is fixedly connected with the discharging cylinder 306, the outer wall of the scraping and blocking cylinder 208 is provided with two upper and lower outer ring grooves, the upper outer ring groove is provided with a third sealing ring 2081, and the lower outer ring groove is provided with a fourth sealing ring 2082; the third sealing ring 2081 and the fourth sealing ring 2082 are both in sliding sealing connection with the inner wall of the inner cylinder 201; the shielding range of the scraping and blocking cylinder 208 between the third sealing ring 2081 and the fourth sealing ring 2082 can cover all the spray holes 2013. The upper end of the scraping and blocking cylinder 208 is provided with a chamfer, so as to avoid that the upper end face is clamped with the vegetable material. The scraping and blocking cylinder 208 is fixedly connected with the discharging cylinder 306 through two vertically distributed vertical rods 215.

[0031] When the inner cylinder 201 is at the top dead center, the spray hole 2013 is located between the third sealing ring 2081 and the fourth sealing ring 2082, so that the scraping and blocking cylinder 208 closes the spray hole 2013, and the sauce material is prevented from flowing out from the spray hole 2013 to the discharging port 2012; When the inner cylinder 201 is at the bottom dead center, the scraping and blocking cylinder 208 is located above the spray hole 2013, the spray hole 2013 is located below the fourth sealing ring 2082, and the spray hole 2013 is no longer closed, at this time, the spray hole 2013 is in an open state, and when the piston 203 is pressed downward, the sauce material can be smoothly sprayed; when the sauce conveying mechanism 200 rises, the inner cylinder 201 moves upward relative to the scraping and blocking cylinder 208, and the residual sauce material and the vegetable material near the spray hole 2013 are scraped off by the scraping and blocking cylinder 208.

[0032] In some embodiments, in order to improve the wrapping effect of the sauce on the vegetable material, please refer to Figures 3 to 6 , 12 layers of the spray holes 2013 are arranged along the axial direction of the inner cylinder 201 from top to bottom, and the spray holes 2013 in each layer are arranged in a staggered manner in the circumferential direction, and the staggered angle is 5° to 20°, and the staggered angle in this embodiment is 6°, so that a relatively uniform annular spray surface can be formed, the effect of staggered spraying is achieved, the contact time and probability of the sauce and the vegetable material are improved, the sauce can form a coating layer on the inner side of the inner cylinder 201, and the sauce can be fully adhered to the vegetable material during the falling process of the vegetable material.

[0033] In some embodiments, in order to facilitate the movement of the piston 203 driven by the first linear actuator 204, please refer to Figure 1 , the piston 203 is fixedly connected with a push rod 209 at the upper end, the push rod 209 is fixedly connected with a push plate 210 at the upper end, the output end of the first linear actuator 204 is provided with an elastic element 211, the elastic element 211 is a spring shock absorber, and can also be a compression spring, an air spring or other elements capable of providing buffering, the elastic element 211 is connected with the push plate 210, impact is absorbed by the elastic element 211, and a rebound force is provided, so that the piston 203 is more buffered at the end of the stroke, the spraying stability is improved, and the service life of the mechanism is prolonged.

[0034] When the first linear actuator 204 extends, the push plate 210 and the push rod 209 are pushed by the elastic member 211, causing the piston 203 to move downward. The elastic member 211 deforms elastically to serve as a buffer, preventing the piston 203 from moving synchronously with the output end of the first linear actuator 204, which would cause the moving speed to be too fast and the sauce to be sprayed out of the injection hole 2013 at too high a pressure. When the first linear actuator 204 retracts, the piston 203 is lifted by the elastic member 211, completing a spraying cycle.

[0035] Please refer to Figure 1 and Figure 4 The piston 203 is fixed with a sauce adding pipe 212 and a vent pipe 213. The piston 203 is provided with two through holes, and the two through holes are respectively communicated with the sauce adding pipe 212 and the vent pipe 213. The sauce adding pipe 212 and the vent pipe 213 are respectively communicated with the storage cavity 207 through the two through holes. The top of the sauce adding pipe 212 and the vent pipe 213 is detachably and sealingly provided with a plug 214. The sauce adding pipe 212 and the vent pipe 213 are fixedly connected with the push plate 210. The sauce adding pipe 212 is a dedicated material supplement channel of the storage cavity 207. After the plug 214 at the top of the sauce adding pipe 212 and the vent pipe 213 is removed, the sauce adding pipe 212 is used to supplement the sauce into the storage cavity 207, and the air in the storage cavity 207 is discharged through the vent pipe 213. The plug 214 can be a threaded sealing plug 214, which includes an external thread portion and an end portion. The external thread portion is provided with external threads. The inner walls of the top ends of the sauce adding pipe 212 and the vent pipe 213 are provided with internal threads matched with the external threads of the plug 214. The end portion is used to close the openings at the top ends of the sauce adding pipe 212 and the vent pipe 213.

[0036] After the material is supplemented, the sauce adding pipe 212 and the vent pipe 213 are sealed by the plug 214 to prevent the pressure generated by the lifting and lowering of the piston 203 from overflowing, and to prevent dust and impurities from entering the storage cavity 207, which meets the food hygiene standards.

[0037] The top of the outer cylinder 202 is fixed with three guide sleeves, which are respectively slidably connected with the push rod 209, the sauce adding pipe 212 and the vent pipe 213. The sauce adding pipe 212 and the vent pipe 213 are fixedly connected with the push plate 210, which can improve the connection strength between the push plate 210 and the piston 203, prevent the push rod 209 from being stressed too much, and make the movement of the piston 203 more stable.

[0038] By introducing a certain pressure of clean gas into the sauce adding pipe 212 and / or the vent pipe 213, the sauce in the storage cavity 207 is pressed out of the injection hole 2013, thereby improving the utilization rate of the sauce and preventing too much sauce from being left over and wasted.

[0039] When the storage chamber 207 needs to be cleaned, high-pressure clean water or food-grade cleaning agent can be injected into the sauce addition pipe 212 and / or the drain pipe 213. The cleaning wastewater and residual sauce can be quickly discharged through the spray hole 2013.

[0040] In some embodiments, the outer cylinder 202 includes an upper coarse-diameter cylinder portion 2021 and a lower fine-diameter cylinder portion 2022, the inner diameter of the coarse-diameter cylinder portion 2021 being larger than the inner diameter of the fine-diameter cylinder portion 2022; the injection hole 2013 is located inside the fine-diameter cylinder portion 2022 and below the coarse-diameter cylinder portion 2021, and the piston 203 moves within the coarse-diameter cylinder portion 2021. This coarse-and-fine cylinder structure increases the upper material storage space while reducing the cross-sectional size of the injection area, facilitating the formation of a stable injection pressure, and ensuring that the piston 203 does not close the injection hole 2013.

[0041] This embodiment provides a hamburger production line, including the auxiliary material feeding device of any of the above embodiments, and has corresponding beneficial effects.

[0042] Work process Cooperate Figures 1 to 4 This embodiment describes the working process of the auxiliary material co-feeding device in a hamburger production line.

[0043] The conveyor belt of the hamburger production line passes sequentially through the bread baking station, the toppings adding station, and the meat adding station. At the toppings adding station, a topping co-feeding device as described in the above embodiment is installed.

[0044] 1. Ready Status: The second linear actuator 205 drives the lifting frame 206 to the upper position. At this time, the scraper and baffle cylinder 208 closes the spray hole 2013 to prevent sauce from dripping. The storage hopper 305 contains ingredients to be added, such as lettuce strips, shredded lettuce or other vegetables; An appropriate amount of sauce is pre-injected into the annular storage chamber 207 through the sauce addition pipe 212.

[0045] 2. Position the hamburger bun: The hamburger bun is conveyed by the conveyor line to the predetermined position below the auxiliary material addition station. After the production line control system detects that the hamburger bun has arrived, it starts the auxiliary material addition process.

[0046] 3. Pre-spray the sauce onto the surface of the hamburger bun: The second linear actuator 205 drives the lifting frame 206 to descend, so that the lower end of the inner cylinder 201 approaches the upper surface of the burger bun, and a small gap can be reserved, or the inner cylinder 201 can slightly abut against the upper surface of the burger bun to form a relatively closed local space. At this position, the first linear actuator 204 starts a spraying action, and pushes the piston 203 downward, so that the sauce in the annular storage cavity 207 is sprayed into the inner side of the inner cylinder 201 through the spraying hole 2013. According to the viscosity of the sauce, the spraying pressure of the spraying hole 2013 is adjusted by controlling the descending speed of the piston 203, so that the sauce pressure is appropriate, and then the sauce falls on the surface of the burger bun from the discharge port 2012 under the action of gravity, to form a layer of relatively uniformly distributed sauce base.

[0047] 4. Sauce adding and synchronous coating: The rotary power element 301 is started, the drive shaft 303 and the spiral blade 304 are rotated, the vegetable material in the storage hopper 305 is pushed to the lower end of the conveying cylinder 302, is introduced into the inner cylinder 201 through the discharge cylinder 306, and the vegetable material freely falls in the inner cylinder 201 and falls on the burger bun.

[0048] During the falling process of the vegetable material, the first linear actuator 204 performs a spraying action again, pushes the piston 203 to descend, so that the sauce in the storage cavity 207 is sprayed again to the inner side of the inner cylinder 201 through the spraying hole 2013, and fully contacts with the falling vegetable material, especially the “fluid” edge region of the vegetable material is coated by the sprayed sauce, to form a higher viscosity edge, so that the stability of the vegetable material on the burger bun is higher. After the vegetable material falls on the burger bun, the top of the vegetable material pile is also sprayed with sauce, to further limit the loosening of the vegetable material pile, and the stability of the vegetable material pile is higher. Alternatively, the first linear actuator 204 is arranged to perform a spraying action only once, but the spraying time is prolonged and is divided into two continuous time periods. In the first time period, no vegetable material is added, so that the sauce base is formed on the burger bun, and the vegetable material falls in the second time period.

[0049] 5. End and reset: After the spraying is completed, the second linear actuator 205 is retracted, and the sauce spraying mechanism is lifted and reset, to prepare for the next cycle of spraying. During the retracting process of the second linear actuator 205, the first linear actuator 204 can drive the piston 203 to ascend by a preset displacement, so that a negative pressure is formed in the storage cavity 207, and meanwhile, the sauce is prevented from flowing out of the spraying hole 2013 when the sauce spraying mechanism is lifted; The second linear actuator 205 drives the lifting frame 206 to ascend to the upper stop position, and the scraping and blocking cylinder 208 reseals the spraying hole 2013, to prevent the sauce from leaking in the non-working state. The burger bun on which the auxiliary material is laid is conveyed to the next working position along the conveying line, meat is added, and subsequent processes are performed.

[0050] During the whole process, since the inner cylinder 201 is close to the lower end area of the hamburger blank during work, the falling range of the ingredients is limited; the sauce is sprayed before and after the ingredients fall, which especially enhances the adhesion of the outer edge of the ingredients; therefore, the ingredients are not easy to scatter from the hamburger during the production line operation and subsequent packaging process, effectively improving the appearance and consistency of the product, while reducing the pollution of the production environment.

[0051] The present application is not limited to the above specific embodiments. For example, the specific volume of the storage cavity 207, the number of layers and the aperture of the spray hole 2013, the stiffness of the elastic member 211, the stroke of the second linear actuator 205, etc. can be appropriately adjusted according to specific production needs; the ingredient conveying mechanism 300 can also adopt a combination of belt conveying and screw conveying, as long as it can stably guide the ingredients into the inner cylinder 201 and contact with the sauce during the falling process, which falls within the protection scope of the present application.

[0052] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0053] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A co-feeding device for auxiliary materials, characterized in that, include: frame; The sauce conveying mechanism includes an inner cylinder, an outer cylinder, a piston, and a first linear actuator. The outer cylinder is fixedly fitted around the inner cylinder, forming a storage cavity for storing sauce between the inner and outer cylinders. The inner cylinder has an inlet and an outlet at its upper and lower ends, respectively, and spray holes that communicate with the storage cavity are evenly distributed circumferentially. The piston is slidably and sealed inside the storage cavity. The first linear actuator can drive the piston to descend axially along the storage cavity. When the piston descends, it can push the sauce in the storage cavity out through the spray holes to the inside of the inner cylinder and discharge it through the outlet. When vegetables are added to the inner cylinder, the sauce can contact the falling vegetables to bind them together and prevent them from becoming loose. The second linear actuator, mounted on the frame, is used to drive the sauce conveying mechanism to move up and down relative to the frame.

2. The auxiliary material co-feeding device according to claim 1, characterized in that, It also includes a vegetable conveying mechanism, which includes a rotary power element, a conveying cylinder, a drive shaft, a spiral blade, and a discharge cylinder. The rotary power element and the conveying cylinder are both fixedly connected to the frame. The drive shaft is rotatably connected to the conveying cylinder on the same axis. The drive shaft is also connected to the output end of the rotary power element. The spiral blade is located inside the conveying cylinder and is fixedly connected to the drive shaft on the same axis. A discharge cylinder connected to the conveying cylinder is fixed at the lower end of the conveying cylinder. The axis of the discharge cylinder is parallel to the axis of the inner cylinder. The lower end of the discharge cylinder extends into the inlet. A storage hopper connected to the upper end of the conveying cylinder is fixed on the side away from the discharge cylinder.

3. The auxiliary material co-feeding device according to claim 2, characterized in that, The inner cylinder is equipped with a scraper and baffle, which is fixedly connected to the discharge cylinder and slidably sealed to the inner cylinder. When the inner cylinder is at the upper dead point, the scraper and baffle closes the injection hole; when the inner cylinder is at the lower dead point, the scraper and baffle is located above the injection hole.

4. The auxiliary material co-feeding device according to claim 1, characterized in that, The injection holes are arranged in multiple layers from top to bottom, with each layer of injection holes arranged alternately in the circumferential direction.

5. The auxiliary material co-feeding device according to claim 1, characterized in that, The sauce conveying mechanism also includes a lifting frame, and the mounting end of the first linear actuator, the output end of the second linear actuator, and the outer cylinder are all fixedly connected to the lifting frame.

6. The auxiliary material co-feeding device according to claim 1, characterized in that, A push rod is fixed to the upper end of the piston, and a push plate is fixed to the upper end of the push rod. An elastic element is installed at the output end of the first linear actuator, and the elastic element is connected to the push plate.

7. The auxiliary material co-feeding device according to claim 6, characterized in that, The piston is fixed with a sauce inlet pipe and a drain pipe. Both the sauce inlet pipe and the drain pipe are connected to the storage chamber. Both the top of the sauce inlet pipe and the drain pipe are detachably and sealed with plugs. Both the sauce inlet pipe and the drain pipe are fixedly connected to the push plate.

8. The auxiliary material co-feeding device according to claim 1, characterized in that, The inner cylinder and the outer cylinder are coaxially and fixedly connected, and the storage cavity is an annular cavity.

9. The auxiliary material co-feeding device according to claim 1, characterized in that, The outer cylinder includes a coarse-diameter cylinder section and a fine-diameter cylinder section. The coarse-diameter cylinder section is located above the fine-diameter cylinder section and has a larger inner diameter than the fine-diameter cylinder section. The injection hole is located inside the fine-diameter cylinder section and below the coarse-diameter cylinder section. The piston moves inside the coarse-diameter cylinder section.

10. A hamburger production line, characterized in that, Includes the auxiliary material co-feeding device as described in any one of claims 1 to 9.

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