Automatic cake filling structure

By designing an automatic filling structure that includes a filling tube and an electric push rod control, the problems of instability during manual filling and the bulging of filling when extracted by existing equipment are solved, achieving precise filling and sealing of pastry fillings and improving the consistency of the appearance and taste of pastries.

CN224482793UActive Publication Date: 2026-07-14BEIJING HONGLUO FOODSTUFF CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING HONGLUO FOODSTUFF CO LTD
Filing Date
2025-05-29
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional manual filling of pastries suffers from problems such as unstable operation, inconsistent filling amount, positional deviation, filling overflow, and poor appearance quality. Existing automated equipment causes the top of the pastry to bulge when the filling is extracted, affecting its appearance and taste.

Method used

It adopts an automatic filling structure including a filling tube, a sliding sleeve, a positioning ring, a clamping block, a rotating rod, an expansion rod, a fan-shaped clamping block, and an elastic ring. The opening and closing of the clamping block is controlled by an electric push rod to achieve precise filling and sealing of the filling and prevent filling leakage.

Benefits of technology

It enables precise filling of pastry fillings, avoids leakage and overflow, ensures consistent appearance and taste of pastries, and improves production efficiency and product aesthetics.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224482793U_ABST
    Figure CN224482793U_ABST
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Abstract

The utility model discloses a kind of pastry filling material automatic filling structure, including filling material insertion tube, the outer wall sliding connection of filling material insertion tube has sliding sleeve, the bottom wall outer wall of sliding sleeve is fixed with positioning ring, the outer wall of the positioning ring is fixed with eight equidistant distribution's clamping block, the one end of corresponding clamping block is rotatably connected with rotating rod through bearing, the bottom outer wall of rotating rod is fixed with expansion rod, the bottom one end side wall of expansion rod is fixed with sector clamping block through 90 ° bending. The utility model is quickly folded under the action of sector clamping block in elastic rubber ring, not only can effectively prevent filling leakage, but also when filling material insertion tube is drawn out, using the situation that pastry top surface injection point is upraised, through the sector clamping block of folding, the injection site of pastry filling material is automatically flattened and folded, avoid the appearance defect caused by filling residue or pastry surface uneven, sealing kneading can be carried out to injection port simultaneously.
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Description

Technical Field

[0001] This utility model relates to the field of food processing technology, specifically to an automatic filling structure for pastry fillings. Background Technology

[0002] In the pastry production industry, filling has always been a crucial step affecting both quality and production efficiency. For a long time, traditional pastry filling methods relied primarily on manual labor, a method with numerous inherent drawbacks. When filling manually, the skill level and operational stability of operators vary greatly, making it difficult to ensure precise and consistent filling amounts for each pastry. This directly leads to inconsistent quality in the finished products, with varying tastes and flavors. Furthermore, manual operation is prone to errors in positioning the filling, resulting in inaccurate placement and severely impacting the pastry's appearance. To overcome the shortcomings of traditional manual filling methods, automated filling equipment has gradually been introduced into pastry production.

[0003] In existing equipment, after the filling is filled, when the filling tube is withdrawn from the pastry, the injection point on the top of the pastry will bulge upwards due to the removal of the filling. This not only affects the appearance quality of the pastry and reduces its aesthetic appeal, but may also cause uneven distribution of the filling inside the pastry, thus affecting its taste and quality. Furthermore, the lack of a sealed structure for the filling injection port makes it easy for the filling to overflow from the pastry. Therefore, we propose an automatic filling structure for pastries to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an automatic filling structure for pastry fillings to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic filling structure for pastry fillings, comprising a filling insert tube, a sliding sleeve slidably connected to the outer wall of the filling insert tube, a positioning ring fixedly provided on the bottom outer wall of the sliding sleeve, eight equally spaced clamping blocks fixedly provided on the outer wall of the positioning ring, a rotating rod movably connected to one end of each clamping block via a bearing, an expansion rod fixedly provided on the bottom outer wall of the rotating rod, a fan-shaped clamping block fixedly provided on the bottom side wall of the expansion rod by a 90° bend, a through L-shaped slot opened on one side outer wall of each of the eight fan-shaped clamping blocks, an elastic rubber ring sleeved on the inner wall of each of the eight L-shaped slots, and a first electric push rod and a second electric push rod respectively provided on the top two sides of the filling insert tube.

[0006] Preferably, the eight fan-shaped clamps are combined into a circular structure, and the eight fan-shaped clamps are located at the bottom end of the filling tube.

[0007] Preferably, a fixing plate is fixed to one side of the outer wall of the first electric push rod and the second electric push rod by a bracket. The outer wall of the fixing plate has fixing holes that are evenly distributed, and the inner wall of the fixing holes is equipped with matching bolts.

[0008] Preferably, two first fixing rings are fixedly provided on one side of the outer wall of the sliding sleeve by a bracket, and the first fixing rings are sleeved on the output shaft of the first electric push rod.

[0009] Preferably, the top outer wall of the filling insert is fixedly provided with two second fixing rings, and the outer wall of the output shaft of the second electric push rod is fixedly provided with two third fixing rings, and the outer walls of the second fixing rings and the third fixing rings are fixedly connected by a bracket.

[0010] Preferably, a feed tube connector is installed at the top end of the filling tube.

[0011] Preferably, the elastic band is made of food-grade silicone.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] By using the fan-shaped clamps to quickly close under the action of the elastic ring, not only can the filling leakage be effectively prevented, but also when the filling tube is pulled out, the upward bulge of the injection point on the top of the pastry can be used to automatically flatten and close the injection point of the pastry filling by closing the fan-shaped clamps. This avoids appearance defects caused by filling residue or uneven surface of the pastry. At the same time, it can seal and pinch the injection port to prevent the filling from overflowing from the pastry. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of an automatic filling structure for pastry fillings according to the present invention;

[0016] Figure 2 This is a schematic diagram of the filling tube structure of an automatic filling structure for pastry fillings according to this utility model;

[0017] Figure 3 This is a schematic diagram of the first electric push rod structure of an automatic filling structure for pastry filling according to this utility model;

[0018] Figure 4 This is a schematic diagram of the fan-shaped clamping block structure of an automatic filling structure for pastry fillings according to this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Filling insert tube, 2. Sliding sleeve, 3. Positioning ring, 4. Clamping block, 5. Rotating rod, 6. Expansion rod, 7. Fan-shaped clamping block, 8. L-shaped slot, 9. Elastic rubber ring, 10. First fixing ring, 11. First electric push rod, 12. Second fixing ring, 13. Third fixing ring, 14. Second electric push rod, 15. Fixing plate, 16. Fixing hole, 17. Feeding pipe connector. Detailed Implementation

[0021] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0022] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] An automatic filling structure for pastry filling includes components such as a filling tube 1, a sliding sleeve 2, a positioning ring 3, clamping blocks 4, a rotating rod 5, an expansion rod 6, fan-shaped clamping blocks 7, an elastic ring 9, a first electric push rod 11, and a second electric push rod 14. The outer wall of the filling tube 1 is slidably connected to the sliding sleeve 2. The positioning ring 3 is fixed to the outer wall of the bottom of the sliding sleeve 2. Eight clamping blocks 4 are evenly distributed on the outer wall of the positioning ring 3. The clamping blocks 4 are movably connected to the rotating rod 5 through bearings. The expansion rod 6 is fixed to the outer wall of the bottom of the rotating rod 5. The side wall of one end of the bottom of the expansion rod 6 is bent at 90° to fix the fan-shaped clamping blocks 7. The eight fan-shaped clamping blocks 7 are combined into a circle located at one end of the bottom of the filling tube 1. The L-shaped clamping blocks on one side of the outer wall of the expansion rod 6 are... The slot 8 is fitted with an elastic ring 9, which is made of food-grade silicone. The top two sides of the filling tube 1 are respectively provided with a first electric push rod 11 and a second electric push rod 14. The outer wall of one side of the sliding sleeve 2 is fixed with two first fixing rings 10, which are fitted onto the output shaft of the first electric push rod 11. The top outer wall of the filling tube 1 is fixed with two second fixing rings 12. The outer wall of the output shaft of the second electric push rod 14 is fixed with two third fixing rings 13. The second fixing rings 12 and the third fixing rings 13 are fixedly connected by a bracket. The outer wall of one side of the first electric push rod 11 and the second electric push rod 14 is fixed with a fixing plate 15. The outer wall of the fixing plate 15 has equidistant fixing holes 16 with matching bolts. A feeding pipe connector 17 is installed at one end of the top of the filling tube 1. Example

[0024] Refer to the instruction manual appendix Figure 1-4 The filling is precisely controlled by the sliding engagement of the filling tube 1 and the sliding sleeve 2. In the first embodiment, the sliding sleeve 2 forms a support structure with eight equally spaced clamping blocks 4 through the bottom positioning ring 3. The clamping blocks 4 drive the expansion rod 6 to move through the rotating rod 5 connected by the bearing, so that the fan-shaped clamping block 7 forms an openable and closable circular structure at the bottom of the filling tube 1. When the first electric push rod 11 pushes the sliding sleeve 2 downward, the fan-shaped clamping block 7 is kept closed by the constraint of the elastic ring 9 to prevent filling leakage. When the sliding sleeve 2 retracts, the fan-shaped clamping block 7 expands outward under the reset action of the elastic ring 9, releasing the seal on the filling outlet. The elastic ring 9 is made of food-grade silicone material, which ensures both sealing and compliance with food safety standards. Example

[0025] Based on Embodiment 1, the first electric push rod 11 and the second electric push rod 14 are synchronously installed through the bracket structure of the fixing plate 15. The fixing holes 16 of the fixing plate 15, together with bolts, can quickly fix the entire device to the designated position on the production line. The output shaft of the second electric push rod 14 is connected to the second fixing ring 12 at the top of the filling tube 1 through the third fixing ring 13, forming an adjustable lifting structure. When it is necessary to adjust the insertion depth of the filling tube 1, the second electric push rod 14 can independently drive the filling tube 1 to move axially relative to the sliding sleeve 2, while the first electric push rod 11 controls the sliding stroke of the sliding sleeve 2 through the first fixing ring 10. The two work together to achieve precise control of the filling amount. Example

[0026] Based on Embodiment 1, the feeding pipe connector 17 is installed on the top of the filling insert 1 and connected to the external feeding system. When the sliding sleeve 2 is in the lowest position, the L-shaped groove 8 of the fan-shaped clamp 7 forms an annular channel with the inner wall of the filling insert 1, allowing the filling to flow out smoothly. When the sliding sleeve 2 moves upward, the expansion rod 6 pushes the fan-shaped clamp 7 to retract towards the center, and the elastic ring 9 is compressed into the L-shaped groove 8 to form a reliable sealing structure. This design achieves automated control of the filling process through mechanical linkage, and quantitative filling of the filling can be completed without manual intervention. Example

[0027] Based on Embodiment 1, the bolt connection structure of the fixing plate 15 facilitates transfer between different production lines. The sliding sleeve 2 and the filling insert 1 are made of a low-friction coefficient material. The 90° bending structure of the fan-shaped clamp 7 and the L-shaped slot 8 make it possible to pre-tighten the elastic ring 9 without additional tools during installation, thus reducing maintenance costs.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual appendix Figure 1-4 First, install the present invention in a suitable position on the pastry production line by fixing the fixing holes 16 and bolts on the fixing plate 15, and connect the material conveying pipe connector 17 to the filling supply hose.

[0030] At this time, the fan-shaped clamp 7 closes under the action of the elastic ring 9. When the round pastry to be filled moves to the designated position, the first electric push rod 11 is activated. Its output shaft pushes the sliding sleeve 2 down, causing the fan-shaped clamp 7 to move down until the bottom of the fan-shaped clamp 7 contacts the top of the pastry. The distance is finely adjusted by the first electric push rod 11. Then the second electric push rod 14 is activated. Its output shaft drives the filling tube 1 to move down and insert into the pastry. The downward movement of the filling tube 1 causes the fan-shaped clamp 7 to open, and the filling flows into the pastry through the filling tube 1.

[0031] After filling is complete, the second electric push rod 14 moves in the opposite direction to move the filling tube 1 upward and pull it out. The first electric push rod 11 also moves in the opposite direction to move the fan-shaped clamp 7 upward. The fan-shaped clamp 7 closes under the action of the elastic ring 9. During the process of pulling out the filling tube 1, the injection point on the top surface of the pastry bulges upward. By closing the fan-shaped clamp 7, the injection port of the pastry filling can be automatically closed to prevent the filling from leaking, thus completing the filling of one pastry. Then the next filling is carried out.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic filling structure for pastry fillings, comprising a filling tube (1), characterized in that: The outer wall of the filling tube (1) is slidably connected to a sliding sleeve (2). The bottom outer wall of the sliding sleeve (2) is fixedly provided with a positioning ring (3). The outer wall of the positioning ring (3) is fixedly provided with eight equally spaced clamping blocks (4). One end of each clamping block (4) is movably connected to a rotating rod (5) through a bearing. The bottom outer wall of the rotating rod (5) is fixedly provided with an expansion rod (6). The bottom side wall of the expansion rod (6) is fixedly provided with a fan-shaped clamping block (7) by bending at 90°. One side outer wall of each of the eight fan-shaped clamping blocks (7) has a through L-shaped slot (8). The inner wall of each of the eight L-shaped slots (8) is fitted with an elastic rubber ring (9). The top two sides of the filling tube (1) are respectively provided with a first electric push rod (11) and a second electric push rod (14).

2. The automatic filling structure for pastry fillings according to claim 1, characterized in that: The eight fan-shaped clamps (7) are combined into a circular structure, and the eight fan-shaped clamps (7) are located at the bottom end of the filling tube (1).

3. The automatic filling structure for pastry fillings according to claim 1, characterized in that: The first electric push rod (11) and the second electric push rod (14) have a fixing plate (15) fixed on one side of their outer wall by a bracket. The outer wall of the fixing plate (15) has fixing holes (16) that are evenly distributed. The inner wall of the fixing holes (16) is equipped with matching bolts.

4. The automatic filling structure for pastry fillings according to claim 1, characterized in that: Two first fixing rings (10) are fixed on one side of the outer wall of the sliding sleeve (2) by a bracket. The first fixing rings (10) are sleeved on the output shaft of the first electric push rod (11).

5. The automatic filling structure for pastry fillings according to claim 1, characterized in that: The top outer wall of the filling tube (1) is fixed with two second fixing rings (12), and the outer wall of the output shaft of the second electric push rod (14) is fixed with two third fixing rings (13). The outer walls of the second fixing ring (12) and the third fixing ring (13) are fixedly connected by a bracket.

6. The automatic filling structure for pastry fillings according to claim 1, characterized in that: The top end of the filling tube (1) is equipped with a feeding tube connector (17).

7. The automatic filling structure for pastry fillings according to claim 1, characterized in that: The elastic rubber ring (9) is made of food-grade silicone.