Steamed stuffed bun inner core forming device
By alternately adding meat filling and vegetable materials into the bun filling forming device, the problem of juice separation in bun production is solved by utilizing the water-locking effect of the meat filling and the separate addition of vegetables. This achieves uniform mixing and stable forming of the filling, improving the taste and quality of the buns.
Patent Information
- Application Number
- CN202511383505.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2025-11-21
AI Technical Summary
In the industrial production of steamed buns, vegetable fillings with high water content are prone to juice leakage during transportation, affecting the taste and flavor, a problem that is difficult to solve effectively with existing technologies.
The bun filling forming device uses alternating feeding of different materials. By setting up multiple alternating material feeding stations and material collection components on the conveyor, it can achieve small-batch, multiple alternating feeding and layer-by-layer stacking. By utilizing the water-locking effect of the meat filling and the separate feeding of vegetables, it reduces juice seepage and retains the moisture and oil of the filling.
It effectively reduces juice seepage, maintains the original moisture and oil in the filling, improves mixing uniformity and shaping stability, avoids blockage, and enhances the taste and market acceptance of the buns.
Smart Images

Figure CN120986996A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pasta processing technology, and in particular to a device for forming the inner core of steamed buns. Background Technology
[0002] In the industrial production of steamed buns, the automated quantitative conveying of fillings is a crucial step. For vegetable fillings with high water content (such as cabbage and chives) and meat fillings with a high proportion of meat, the traditional processing method involves mixing all the vegetables, meat, and seasonings together. During continuous mechanical extrusion and conveying, this often results in a large amount of juice being separated and layered. The loss of juice causes the filling to dry out, reducing its texture and resulting in steamed buns lacking the original juicy flavor.
[0003] To reduce juice separation and stratification, existing technologies typically employ the following measures: Adding absorbent materials such as starch or vermicelli fragments to the filling to absorb the juice and reduce yield. However, this method inevitably alters the original proportions and texture of the filling, making vegetable fillings less refreshing and meat fillings thick and sticky, affecting product flavor and market acceptance. Alternatively, cooling the filling before or during transport can solidify the fat and reduce vegetable cell activity, thus decreasing juice loss. However, this method requires additional cooling devices, increasing energy consumption and equipment costs. Furthermore, in assembly line operations, it can lead to uneven local temperatures in the filling, and even thawing and water separation during subsequent heating stages, making it difficult to completely solve the problem of juice loss. Summary of the Invention
[0004] The purpose of this invention is to solve one of the problems pointed out in the background art, and to provide a steamed bun filling forming device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A steamed bun filling forming device includes a first conveyor, which includes several movable conveying units. Several first material feeding stations and several second material feeding stations are arranged above the first conveyor. The multiple first material feeding stations and multiple second material feeding stations are alternately distributed along the conveying direction of the first conveyor. The first material feeding stations are used to feed first materials, and the second material feeding stations are used to feed second materials.
[0007] Each of the conveying units is equipped with a set of material collection components, and an inclined pressure plate is provided downstream of the first conveyor. The material collection components, in conjunction with the inclined pressure plate, can press the filling on the conveying unit together.
[0008] The material collection assembly includes guide seats symmetrically distributed along the length direction of the conveying unit, wherein the length direction of the conveying unit is the width direction of the first conveyor. The guide seats are fixedly assembled with the conveying unit. The guide seats are slidably connected to slide rods. The sliding direction of the slide rods is set along the length direction of the conveying unit. A return spring is installed between the end of the slide rod and the conveying unit. A material collection groove is opened at the end of the slide rod away from the return spring. When each conveying unit passes the inclined pressure plate, the two slide rods overcome the elastic force of the return spring and move towards the center position of the conveying unit simultaneously.
[0009] The first material feeding station and the second material feeding station are staggered and can make the first material and the second material fed in a straight line along the width direction of the first conveyor.
[0010] The first conveyor is a plate chain conveyor, and the conveying unit is a single chain plate;
[0011] Alternatively, the first conveyor may be a belt conveyor.
[0012] The forming device also includes a shovel plate and a second conveyor. The shovel plate is inclinedly disposed at the end of the first conveyor and is used to scrape the lumpy filling on the first conveyor onto the second conveyor.
[0013] The present invention proposes a steamed bun filling forming device, which has the following advantages: the device feeds different materials in small batches, multiple times and alternately, so that the filling is stacked layer by layer during the conveying process, thereby reducing excessive juice precipitation, maintaining the original moisture and oil, reducing the risk of blockage, and improving the uniformity of filling mixing and forming stability. Attached Figure Description
[0014] Figure 1 This is a partial front view structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the material distribution structure of the present invention;
[0016] Figure 3 This is a partial three-dimensional structural diagram of the present invention;
[0017] Figure 4 This is a schematic diagram of the left-side structure of the material collection assembly of the present invention;
[0018] Figure 5 This is a schematic diagram showing the positional distribution of the first conveyor, the shovel, and the second conveyor according to the present invention.
[0019] Figure 6 This is a partial top view of the distribution structure of the first and second material dispensing stations of the present invention.
[0020] Figure 7This is a cross-sectional view of the material collection assembly of the present invention, showing the two sliding rods nested together.
[0021] In the diagram: 1. First conveyor; 2. Conveying unit; 3. First material feeding station; 4. Second material feeding station; 5. Guide seat; 6. Slide bar; 7. Inclined pressure plate; 8. Material collection assembly; 9. Return spring; 10. Material collection trough; 11. Shovel plate; 12. Second conveyor. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0023] Reference Figures 1-7 A steamed bun filling forming device includes a first conveyor 1, which includes several movable conveying units 2. Several first material feeding stations 3 and several second material feeding stations 4 are provided above the first conveyor 1. The multiple first material feeding stations 3 and multiple second material feeding stations 4 are alternately distributed along the conveying direction of the first conveyor 1. The first material feeding stations 3 are used to feed first materials, and the second material feeding stations 4 are used to feed second materials.
[0024] During operation, the conveying unit 2, driven by the first conveyor 1, sequentially passes through multiple first material feeding stations 3 and multiple second material feeding stations 4. Each first material feeding station 3 feeds a certain amount of first material into the conveying unit 2 it passes through, and each second material feeding station 4 feeds a certain amount of second material into the conveying unit 2 it passes through. As the conveying unit 2 continues to move, a single conveying unit 2 will alternately receive multiple first and second materials, thereby gradually forming a filling combination composed of different materials stacked in stages inside the conveying unit 2.
[0025] This device alternately sets multiple first material feeding stations 3 and multiple second material feeding stations 4 in the conveying direction of the first conveyor 1, so that the materials in the conveying unit 2 are fed in a small batch and multiple times in an alternating pattern. This avoids the problem of excessive squeezing and separation of juice caused by directly pressing in a large batch of materials at once. It can also separate different materials for feeding, which helps to reduce the amount of juice separation. Different materials are stacked layer by layer and naturally distributed in the conveying unit 2, which helps to maintain the original moisture and oil of the filling, reduce the blockage of the conveying channel, and improve the uniformity of filling mixing and the stability of molding.
[0026] As one implementation method, the first material is made from minced pork, beef, chicken, or other ground meat. During the addition process, the proteins and fats in the minced meat help retain water, absorbing and encapsulating some of the juices released by the subsequently added vegetables, thus reducing the proportion of free water and maintaining the moisture of the filling. Adding a small amount of seasonings and oil to the first material further enhances the water retention and flavor base of the meat filling, making the subsequent integration of vegetables and meat even stronger. The second material is made from vegetables such as cabbage, leeks, onions, and carrots, providing a refreshing taste and umami flavor. Simultaneously, adding them in batches and alternately avoids the vegetables being compressed all at once, reducing excessive cell sap release. By managing meat and vegetables separately and adding them alternately, the original flavor can be maintained while effectively preventing concentrated juice loss.
[0027] It should be noted that this device only indicates that the first material feeding station 3 and the second material feeding station 4 can be used. If the filling requires a lot of materials, a third material feeding station, a fourth material feeding station, etc. can also be set up.
[0028] As one implementation method, the first material feeding station 3 uses a volumetric screw feeder, a piston-type metering pump, or a metering hopper with a solenoid valve to provide stable and precise metering for the viscous characteristics of minced meat, avoiding uneven discharge or blockage. The second material feeding station 4 uses a vibrating hopper with a gate, a flap-type metering hopper, or a feeding hopper with a stirrer to solve the problem of vegetable scraps bridging and poor discharge, ensuring uniform and reliable feeding each time.
[0029] Each conveying unit 2 is equipped with a set of material collecting components 8. An inclined pressure plate 7 is located downstream of the first conveyor 1. The material collecting components 8, in conjunction with the inclined pressure plate 7, can press the filling on the conveying unit 2 together. The material collecting components 8 include guide seats 5 symmetrically distributed along the length of the conveying unit 2, wherein the length of the conveying unit 2 is the same as the width of the first conveyor 1. The guide seats 5 are fixedly assembled with the conveying unit 2. A sliding rod 6 is slidably connected to the guide seats 5. The sliding direction of the sliding rod 6 is set along the length of the conveying unit 2. A return spring 9 is installed between the end of the sliding rod 6 and the conveying unit 2. The sliding rod 6 is away from... One end of the return spring 9 is provided with a material collection trough 10. When each conveying unit 2 passes the inclined pressure plate 7, the two sliding rods 6 overcome the elastic force of the return spring 9 and move towards the center position of the conveying unit 2 simultaneously. This device can also be used in the form of stacking one on top of the other. However, after the material is stacked one on top of the other, it will become a small mountain-like shape, which is difficult to collect together by the material collection troughs 10 on both sides. In order to overcome the problem of difficulty in collecting and compressing into a ball, the first material feeding station 3 and the second material feeding station 4 are staggered and can make the first material and the second material fed in a “I” shape along the width direction of the first conveyor 1.
[0030] In the conveying direction of the first conveyor 1, the first material feeding station 3 and the second material feeding station 4 are staggered, allowing the first and second materials to be distributed in a straight line along the width direction of the first conveyor 1. During operation, different materials are alternately fed in a manner distributed along the length direction of the conveying unit 2, forming an interlaced strip structure in a straight line on the conveying unit 2. As the conveying unit 2 moves downstream and passes the inclined pressure plate 7, the sliding rods 6 on both sides drive the collecting trough 10 to gradually move towards the center, thereby collecting and pressing together the various materials that are arranged in a straight line and alternately distributed, ultimately forming a meat filling ball structure for a single bun within the conveying unit 2. By setting the collecting component 8 on the conveying unit 2 and configuring the inclined pressure plate 7 downstream, the various materials that are arranged in a straight line and alternately distributed along the width direction can be effectively collected and concentrated during the conveying process, avoiding the problem of loose accumulation of materials within the conveying unit 2 that would affect subsequent balling. By utilizing the coordinated action of the slide bar 6 and the material collection trough 10, the dispersed materials can be compressed into clumps without strong pressing, thereby reducing juice extraction, maintaining the original moisture and oil of the filling, and ensuring the shaping effect and taste stability of the bun filling.
[0031] Of course, in order to improve the effect of compressing the filling into a ball, such as Figure 7 As shown, the two slide rods 6 of each group of material collection components 8 can be set as a structure with one large and one small that can be nested together, such as a telescopic sleeve or a male and female head structure. By overlapping and nesting, the binding force of the filling after compression into a ball can be improved.
[0032] In one implementation, the first conveyor 1 is a plate chain conveyor, and the conveying unit 2 is a single chain plate; or the first conveyor 1 is a belt conveyor.
[0033] The forming device also includes a shovel plate 11 and a second conveyor 12. The shovel plate 11 is inclinedly disposed at the end of the first conveyor 1. The shovel plate 11 is used to scrape the clump of filling on the first conveyor 1 onto the second conveyor 12.
[0034] During operation, the conveying unit 2 alternately feeds and presses materials onto the first conveyor 1, forming a clump of filling which then moves to the end of the conveyor 1. At this point, the clump of filling, driven by gravity and the conveying direction, comes into contact with the shovel 11. The inclined surface of the shovel 11 scrapes the clump of filling off and guides it to the second conveyor 12. The clump of filling is then transported by the second conveyor 12 to the wrapping station, facilitating the combination of the filling and the dough.
[0035] For the wrapping station, companies can choose between manual or mechanical wrapping depending on their needs. If the main focus is on handmade buns, then both the dough and the wrapping of the buns will be done by hand. If the production demand is relatively high, mechanical equipment can also be used to wrap the buns.
[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes to the technical solution and inventive concept of the present invention within the scope of the technology disclosed in the present invention should be covered within the scope of protection of the present invention.
Claims
1. A device for forming the inner core of a steamed bun, characterized in that, The first conveyor (1) includes several movable conveying units (2). Several first material feeding stations (3) and several second material feeding stations (4) are provided above the first conveyor (1). The multiple first material feeding stations (3) and multiple second material feeding stations (4) are alternately distributed along the conveying direction of the first conveyor (1). The first material feeding stations (3) are used to feed the first material, and the second material feeding stations (4) are used to feed the second material.
2. The steamed bun filling forming device according to claim 1, characterized in that, Each conveying unit (2) is equipped with a set of material collection components (8), and an inclined pressure plate (7) is provided downstream of the first conveyor (1). The material collection components (8) combined with the inclined pressure plate (7) can press the filling on the conveying unit (2) together.
3. The steamed bun filling forming device according to claim 2, characterized in that, The material collection assembly (8) includes guide seats (5) symmetrically distributed along the length direction of the conveying unit (2), wherein the length direction of the conveying unit (2) is the width direction of the first conveyor (1). The guide seats (5) are fixedly assembled with the conveying unit (2). The guide seats (5) are slidably connected to a slide rod (6). The sliding direction of the slide rod (6) is set along the length direction of the conveying unit (2). A return spring (9) is installed between the end of the slide rod (6) and the conveying unit (2). A material collection groove (10) is opened at the end of the slide rod (6) away from the return spring (9). When each conveying unit (2) passes through the inclined pressure plate (7), the two slide rods (6) overcome the elastic force of the return spring (9) and move towards the center position of the conveying unit (2) at the same time.
4. The steamed bun filling forming device according to claim 2, characterized in that, The first material feeding station (3) and the second material feeding station (4) are staggered and can make the first material and the second material fed in a “I” shape along the width direction of the first conveyor (1).
5. A steamed bun filling forming device according to any one of claims 1-4, characterized in that, The first conveyor (1) is a plate chain conveyor, and the conveying unit (2) is a single chain plate; Alternatively, the first conveyor (1) may be a belt conveyor.
6. A steamed bun filling forming device according to any one of claims 1-4, characterized in that, The forming device also includes a shovel plate (11) and a second conveyor (12). The shovel plate (11) is inclinedly disposed at the end of the first conveyor (1). The shovel plate (11) is used to scrape the lumpy filling on the first conveyor (1) onto the second conveyor (12).