A controllable stuffing device for steamed stuffed bun production

By using a controllable filling device with a rotary valve and piston, combined with a servo motor drive, the problem of inaccurate filling amount in steamed buns was solved, achieving stability and consistency in steamed bun production.

CN224482795UActive Publication Date: 2026-07-14CHENGDU JIEJIEDA MACHINERY EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU JIEJIEDA MACHINERY EQUIPMENT CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing steamed bun filling devices cannot quickly and accurately adjust the filling amount, resulting in too much or too little filling, which affects the stability of steamed bun quality.

Method used

The device employs a controllable filling device, which includes components such as a hopper, a filling mounting plate, a valve body, a piston, and a servo motor. Through the cooperation of the rotary valve and the piston, it achieves precise control over the storage and injection of filling. Combined with the auger mechanism and servo motor drive, it achieves precise control over the filling volume.

Benefits of technology

It enables precise control of the filling amount in steamed buns, reducing the problem of too much or too little filling, and ensuring the stability of steamed bun quality and production efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224482795U_ABST
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Abstract

The utility model discloses a controllable stuffing device for steamed stuffed bun production relates to steamed stuffed bun stuffing technology field, including hopper, stuffing installation board, valve body and piston, valve body is fixed on stuffing installation board, hopper sets up at the top of valve body, and valve body is connected with stuffing pipeline, and the rotatable assembly of valve body has the valve, is equipped with passageway in the valve, and the side wall of valve is provided with switching channel, and switching channel is linked with passageway, and piston passageway is formed in valve body, and one end of passageway links piston passageway, and piston passageway is slidably fitted with piston, and the feed inlet of stuffing pipeline and the bottom opening of hopper all are located on the rotation path of switching channel, and the accurate butt joint of switching channel and hopper bottom opening, stuffing pipeline feed inlet is realized through the rotation of valve, and the sliding action of piston in piston passageway is matched, and the orderly work cycle of " storage - stuffing " is formed, and the stuffing amount error problem caused by the direct injection of traditional device into the wrapper of stuffing is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of steamed bun filling technology, specifically a controllable filling device for steamed bun production. Background Technology

[0002] In the steamed bun production industry, filling is a crucial step determining the quality and production efficiency of the buns. The filling device, as the core equipment for achieving precise quantitative filling, directly affects the consistency of the buns' texture, the regularity of their shape, and the continuous operation capability of the production line. With the large-scale and automated development of the food industry, the market has placed increasingly higher demands on the filling accuracy, filling adaptability, and operational stability of steamed bun filling devices. Currently, filling devices directly inject the filling from the hopper into the dough, resulting in significant errors in the filling amount. When faced with the production needs of steamed buns of different sizes or filling types, the inability to quickly and accurately adjust the filling amount easily leads to situations where too much filling causes the buns to break and leak, or too little filling affects the texture, seriously impacting the stability of product quality. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a controllable filling device for steamed bun production, thereby solving the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a controllable filling device for steamed bun production, comprising a hopper, a filling mounting plate, a valve body, and a piston. The valve body is fixed on the filling mounting plate, the hopper is disposed on the top of the valve body, the valve body is connected to a filling pipe, a rotary valve is rotatably mounted inside the valve body, the rotary valve has a channel, a switching channel is opened on the side wall of the rotary valve, the switching channel is connected to the channel, a piston channel is formed inside the valve body, one end of the channel is connected to the piston channel, a piston is slidably fitted inside the piston channel, and the inlet of the filling pipe and the bottom opening of the hopper are both located on the rotation path of the switching channel.

[0005] Furthermore, one axial end of the rotary valve extends through the valve body and is connected to an injection swing arm. The injection swing arm is hinged to the telescopic shaft of the injection cylinder, and the cylinder body of the injection swing arm is hinged to it.

[0006] Furthermore, the filling mounting plate is equipped with a filling servo motor, the output shaft of which is connected to a filling screw. The filling screw is rotatably mounted on the filling mounting plate, and a threaded hole is provided at one end of the piston near the filling screw. The thread of the filling screw is adapted to the threaded hole.

[0007] Furthermore, an auger mechanism is rotatably installed inside the hopper. The auger mechanism includes an auger shaft, a conical auger, and a fixed bracket. The auger shaft is rotatably mounted on the fixed bracket, and an auger servo motor is mounted on the fixed bracket. The output shaft of the auger servo motor is connected to the auger shaft. The conical auger is mounted on the auger shaft.

[0008] The beneficial effects of this utility model are:

[0009] 1. The rotation of the rotary valve achieves precise alignment between the switching channel and the bottom opening of the hopper, as well as the inlet of the filling pipe. Combined with the sliding motion of the piston within the piston channel, this creates an orderly "storage-filling" work cycle. When the switching channel is connected to the bottom opening of the hopper, the filling can enter the piston channel for storage. When the rotary valve rotates to connect the switching channel with the inlet of the filling pipe, the piston pushes the filling in the channel through the filling pipe into the dough, avoiding the filling volume error problem caused by directly injecting the filling into the dough in traditional devices.

[0010] 2. The filling servo motor drives the filling screw to rotate. Through the matching of the filling screw and the piston thread hole, the piston moves smoothly. The piston's movement distance can be precisely controlled, thereby accurately adjusting the amount of filling each time. It can quickly adapt to the filling needs of different sized buns, effectively reducing the situation of too much filling causing the skin to break and leak, or too little filling affecting the taste, thus ensuring the stability of product quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a controllable filling device for steamed bun production according to the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of a transfer valve in a controllable filling device for steamed bun production according to this utility model;

[0013] Figure 3 This is a schematic diagram of the filling dispensing component in a controllable filling device for steamed bun production according to this utility model;

[0014] Figure 4 This is a side view of the filling dispensing component in a controllable filling device for steamed bun production according to this utility model.

[0015] In the diagram, 1-hopper, 2-filling mounting plate, 3-valve body, 4-piston, 5-filling pipe, 6-rotary valve, 7-switching channel, 8-filling swing arm, 9-filling cylinder, 10-filling servo motor, 11-filling screw, 12-auger mechanism, 13-auger servo motor, 14-filling discharge fixing plate, 15-filling discharge mounting plate, 16-inner filling tube, 17-outer filling tube, 18-lifting screw, 19-inner filling tube lifting screw, 20-guide rail, 21-inner filling tube guide rail, 22-lifting servo motor, 23-screw nut mounting block, 24-inner filling tube servo motor, 25-inner filling tube nut mounting block, 26-air jet hole. Detailed Implementation

[0016] Example 1

[0017] like Figure 1 and Figure 2 As shown, a controllable filling device for steamed bun production includes a hopper 1, a filling mounting plate 2, a valve body 3, and a piston 4. The valve body 3 is fixed on the filling mounting plate 2. The hopper 1 is located on top of the valve body 3. The valve body 3 is connected to a filling pipe 5. A rotary valve 6 is rotatably mounted inside the valve body 3. The rotary valve 6 has a channel. A switching channel 7 is opened on the side wall of the rotary valve 6 and communicates with the channel. A piston channel is formed inside the valve body 6. One end of the channel communicates with the piston channel. A piston 4 is slidably fitted inside the piston channel. The inlet of the filling pipe 5 and the bottom opening of the hopper 1 are both located on the rotation path of the switching channel 7. An auger mechanism 12 is rotatably mounted inside the hopper 1. The auger mechanism 12 includes an auger... The machine consists of a shaft, a conical auger, and a fixed support. The auger shaft is rotatably mounted on the fixed support, which houses an auger servo motor 13. The output shaft of the auger servo motor 13 is connected to the auger shaft. The conical auger is mounted on the auger shaft. The filling mounting plate 2 and the fixed support are both fixed to the frame of the steamed bun machine. Filling is fed into the hopper 1. The auger servo motor 13 drives the auger shaft to rotate, which in turn drives the conical auger to rotate, thus mixing the filling. After mixing, the rotation of the rotary valve 6 precisely connects the switching channel 7 with the bottom opening of the hopper and the inlet of the filling pipe. This, combined with the sliding motion of the piston 4 within the piston channel, forms an orderly "storage-filling" work cycle. When the switching channel 7 is connected to the bottom opening of the hopper 1, the filling can enter the piston channel for storage. When the rotary valve 6 rotates to connect the switching channel 7 with the inlet of the filling pipe 5, the piston 4 pushes the filling in the channel through the filling pipe 5 into the dough, avoiding the filling error problem caused by directly injecting the filling into the dough in traditional devices.

[0018] Example 2

[0019] Based on Example 1, such as Figure 1As shown, one end of the rotary valve 6 extends through the valve body 3 and is connected to the filling swing arm 8. The filling swing arm 8 is hinged to the telescopic shaft of the filling cylinder 9. The cylinder body of the filling swing arm 8 is hinged and installed. The extension and retraction of the filling cylinder 9 drives the filling swing arm 8 to deflect, which in turn drives the rotary valve 6 to deflect, adjusts the position of the switching channel 7, and completes the switching of filling and filling actions.

[0020] Example 3

[0021] Based on Example 2, such as Figure 1 As shown, a filling servo motor 10 is installed on the filling mounting plate 2. The output shaft of the filling servo motor 10 is connected to a filling screw 11. The filling screw 11 is rotatably mounted on the filling mounting plate 2. A threaded hole is opened at one end of the piston 4 near the filling screw 11. The thread of the filling screw 11 is adapted to the threaded hole. The piston 4 can only move linearly within the piston channel, thus restricting the rotational freedom of the piston 4. The filling servo motor 10 drives the filling screw 11 to rotate. Through the adaptation between the filling screw 11 and the piston threaded hole, the piston 4 moves smoothly. The movement distance of the piston 4 can be precisely controlled, thereby accurately adjusting the amount of filling each time. It can quickly adapt to the filling needs of buns of different sizes, effectively reducing the situation of too much filling causing the skin to break and leak filling, or too little filling affecting the taste, thus ensuring the stability of product quality.

[0022] Example 4

[0023] Based on Example 3, such as Figures 1 to 4As shown, it also includes a filling dispensing component, which includes a filling dispensing fixing plate 14, a filling dispensing mounting plate 15, an inner filling tube 16, and an outer filling tube 17. The filling dispensing fixing plate 14 is fixed on the frame of the steamed bun machine. A lifting screw 18 and an inner filling tube lifting screw 19 are respectively rotatably mounted on the filling dispensing fixing plate 14 and the filling dispensing mounting plate 15. A guide rail 20 and an inner filling tube guide rail 21 are respectively fixed on the filling dispensing fixing plate 14 and the filling dispensing mounting plate 15. A lifting servo motor is mounted on the filling dispensing fixing plate 14. 22. The output shaft of the lifting servo motor 22 is connected to the lifting lead screw 18. A lead screw nut mounting block 23 is threaded onto the lifting lead screw 18. The lead screw nut mounting block 23 is slidably adapted to the guide rail 20. The filling dispensing mounting plate 15 is connected to the lead screw nut mounting block 23. An inner filling tube servo motor 24 is mounted on the filling dispensing mounting plate 15. The output shaft of the inner filling tube servo motor 24 is connected to the inner filling tube lifting lead screw 19. An inner filling tube nut mounting block 24 is threaded onto the inner filling tube lifting lead screw 19. The inner filling tube threaded mounting block 25 is slidably adapted to the inner filling tube guide rail 21. The inner filling tube 16 is mounted on the inner filling tube threaded mounting block 25. An outer filling tube lifting cylinder is mounted on the filling discharge mounting plate 44. The telescopic shaft of the outer filling tube lifting cylinder is connected to the outer filling tube 17. The inner filling tube 16 passes through the top of the outer filling tube 17. The outer filling tube 17 is connected to the filling pipe 5. The inner filling tube 16 has an air jet hole 26 through it along its own axis. Initially, the switching channel 7 is connected to the bottom of the hopper 1. The filling servo motor 10 drives the filling screw 11 to rotate, causing the piston 4 to move axially along the filling screw 11, moving the piston 4 away from the rotary valve 6. This draws the filling from the hopper 1 into the piston channel. Then, the rotary valve 6 deflects, connecting the switching channel 7 to the inlet of the filling pipe 5. The bottom opening of the hopper 1 is blocked by the side wall of the rotary valve 6. Then, the piston 4 moves closer to the valve body 3, injecting the filling in the piston channel into the outer filling pipe 17 through the filling pipe 5. The lifting servo motor 22 drives the lifting screw 18 to rotate, causing the screw bolt mounting block 23 to move the filling mounting plate 15 up and down, bringing the outer filling tube 46 closer to the dough. The inner filling tube servo motor 24 drives the inner filling tube lifting screw 19 to rotate, causing the inner filling tube nut mounting block 25 to move the inner filling tube 16 up and down. The inner filling tube 16 and the outer filling tube 17 form a piston mechanism, through which the filling in the outer filling tube 17 is injected into the dough. The air jet hole 26 is connected to an external air blowing device, through which air is blown into the outer filling tube 17, preventing the filling from sticking to the inner wall of the outer filling tube 17 and the bottom of the inner filling tube 16, ensuring a more accurate filling amount.

Claims

1. A controllable filling device for steamed bun production, characterized in that, The device includes a hopper (1), a filling mounting plate (2), a valve body (3), and a piston (4). The valve body (3) is fixed on the filling mounting plate (2). The hopper (1) is located on the top of the valve body (3). The valve body (3) is connected to a filling pipe (5). A rotary valve (6) is rotatably mounted inside the valve body (3). A channel is provided inside the rotary valve (6). A switching channel (7) is opened on the side wall of the rotary valve (6). The switching channel (7) is connected to the channel. A piston channel is formed inside the valve body (3). One end of the channel is connected to the piston channel. A piston (4) is slidably fitted inside the piston channel. The inlet of the filling pipe (5) and the bottom opening of the hopper (1) are both located on the rotation path of the switching channel (7).

2. The controllable filling device for steamed bun production according to claim 1, characterized in that, One end of the rotary valve (6) extends through the valve body (3) and is connected to the filling swing arm (8). The filling swing arm (8) is hinged to the telescopic shaft of the filling cylinder (9). The cylinder body of the filling swing arm (8) is hinged.

3. The controllable filling device for steamed bun production according to claim 1, characterized in that, The filling mounting plate (2) is provided with a filling servo motor (10), and the output shaft of the filling servo motor (10) is connected to a filling screw (11). The filling screw (11) is rotatably mounted on the filling mounting plate (2). The piston (4) has a threaded hole at one end near the filling screw (11), and the thread of the filling screw (11) is adapted to the threaded hole.

4. The controllable filling device for steamed bun production according to claim 1, characterized in that, The hopper (1) is rotatably equipped with an auger mechanism (12). The auger mechanism (12) includes an auger shaft, a conical auger and a fixed bracket. The auger shaft is rotatably mounted on the fixed bracket. An auger servo motor (13) is mounted on the fixed bracket. The output shaft of the auger servo motor (13) is connected to the auger shaft. The conical auger is mounted on the auger shaft.