Stepless fine adjustment mechanism for thickness of pressed surface

Abstract

The utility model belongs to the technical field of food processing, and particularly relates to a mechanism capable of realizing stepless fine adjustment of the thickness of pressed dough, the mechanism comprises a mounting rack and a pair of pressed dough rollers fixed on the mounting rack, the pressed dough rollers comprise a concentric pressed dough roller and an eccentric pressed dough roller, a pressed dough channel is arranged between the concentric pressed dough roller and the eccentric pressed dough roller, and the concentric pressed dough roller and the eccentric pressed dough roller are fixed on the mounting rack. One end of the eccentric dough pressing roller is connected with an adjusting handle, the adjusting handle is connected with an adjusting screw rod doing reciprocating motion, the adjusting screw rod is in threaded connection with an adjusting support, and the adjusting screw rod drives the adjusting handle to rotate. Stepless adjustment of the wrapper pressing thickness can be achieved under the non-stop condition, namely, adjustment of the wrapper in movement can be achieved, the fastening nut needs to be loosened during adjustment, and non-stop adjustment is achieved through self-locking performance of threaded connection between the screw joint screw and the adjusting support.

Description

Technical Field

[0001] This application belongs to the field of food processing technology, and in particular relates to a mechanism that can achieve stepless fine adjustment of the thickness of the pressed surface. Background Technology

[0002] In the context of the highly refined development of the modern food industry, the large-scale production of pasta products such as dumplings, wontons, and noodles places stringent demands on processing techniques. Among these, the process of pressing dough into wrappers is a core step, directly determining the final product's texture and quality. In practice, food production companies not only need to evenly stretch the dough into paper-thin wrappers, but also have extremely stringent requirements regarding the precision of the wrapper's thickness—the thickness deviation must be controlled within ±0.1 millimeters; otherwise, it will lead to uneven heating during steaming or boiling, and poor taste.

[0003] Different types of pasta products have different production requirements: frozen dumplings require a dough thickness of 0.8-1.2 mm to ensure they remain resilient after freezing; handmade wonton wrappers need to be pressed to 0.3-0.5 mm to achieve a melt-in-your-mouth texture. This necessitates that dough pressing equipment possess a "stepless fine-tuning" function, capable of precise control of any value within a thickness range of 0.2-0.3 mm, meeting ever-changing production needs like a precision instrument. Even more challenging is the fact that food production lines strive for continuous, high-efficiency operation. When a deviation in dough thickness is detected in real time, operators must adjust the parameters immediately while the equipment remains running to avoid material waste and production capacity loss due to downtime adjustments.

[0004] However, a review of existing dough pressing mechanisms on the market reveals significant technological bottlenecks in both traditional roller presses and new CNC dough pressing machines. Traditional equipment relies on manual experience to adjust the roller spacing, resulting in limited adjustment precision and difficulty in parameter correction during dynamic production. While some CNC machines possess automated adjustment functions, their mechanical structure and control system limit them to limited, incremental adjustments, failing to meet the demand for "stepless fine-tuning." These technological shortcomings often lead enterprises to struggle to balance precision and efficiency in actual production, becoming a key constraint on the industrialization of pasta processing.

[0005] In the prior art, for example, Chinese utility model patent application number CN 201620494659.1, application date May 27, 2016, entitled "A Stepless Adjustment Device for Dough Rolling Thickness," discloses the following technical solution: This utility model discloses a stepless adjustment device for dough rolling thickness, including an eccentric shaft connected to a connecting rod, and the connecting rod connected to a slider; the slider is connected to an upper roller, and the up-and-down sliding of the slider causes the upper roller to change its relative position with the lower roller; a rotating arm is fixed on the eccentric shaft, and a shaft hole is provided at the end of the rotating arm; a handle slide rod passes through the shaft hole, and the handle slide rod has a fine-tuning tooth; the handle is connected to a fine-tuning rotating arm, and a locking shaft is provided at the end of the fine-tuning rotating arm; a fine-tuning scale is provided at the front end of the locking shaft, and the fine-tuning scale is connected to the frame through a connecting component. The fine-tuning tooth has 2 to 5 teeth. The aforementioned patent uses an eccentric connecting rod to drive a slider to adjust the gap between the pressing rollers. However, the eccentric shaft is not the pressing shaft. In terms of structural design, an additional set of shafts is required, which occupies a large amount of space. Moreover, its adjustment structure requires gears, making the structure complex and the production cost high. Furthermore, due to the presence of a gear ring, it cannot truly achieve stepless adjustment. Summary of the Invention

[0006] To overcome the aforementioned problems in existing technologies, a stepless fine-tuning mechanism for pressing dough thickness is proposed, which can enable stepless adjustment of dough thickness and real-time adjustment.

[0007] To achieve the above-mentioned technical effects, the technical solution of this application is as follows:

[0008] A stepless micro-adjustment mechanism for pressing surface thickness includes a mounting frame and a pair of pressing rollers fixed on the mounting frame. The pressing rollers include a concentric pressing roller and an eccentric pressing roller, with a pressing channel between the concentric pressing roller and the eccentric pressing roller. One end of the eccentric pressing roller is connected to an adjusting handle, and the adjusting handle is connected to an adjusting screw that performs reciprocating motion. The adjusting screw is threadedly connected to an adjusting support, and the adjusting screw drives the adjusting handle to rotate.

[0009] Furthermore, the free end of the adjusting handle is connected to one end of the connecting rod, the other end of the connecting rod is connected to one end of the ball joint bearing, and the other end of the ball joint is connected to the adjusting screw.

[0010] Furthermore, an adjusting support is fixed on the mounting bracket, and a bent portion is provided at one end of the adjusting support. A threaded hole is provided on the bent portion, and the adjusting screw passes through the threaded hole. A fastening nut is provided on the adjusting screw, and the fastening nut is located next to the bent portion.

[0011] Furthermore, the eccentric pressing roller includes a pressing roller and an eccentric rotating shaft, wherein the eccentric rotating shaft and the central axis of the pressing roller are eccentrically distributed.

[0012] Furthermore, the eccentric pressing roller includes an eccentric shaft and a roller, which are connected by a bearing, and a driven gear for transmission is fixed on the roller.

[0013] Furthermore, a sprocket and a drive gear for transmission are fixed on the concentric pressing roller, and the drive gear and the driven gear mesh.

[0014] Furthermore, a chain is provided on the sprocket, and the chain is wound around the motor output end.

[0015] The advantages of this application are:

[0016] 1. This application can achieve stepless adjustment of the pressing thickness of the dough without stopping the machine, that is, the dough can be adjusted during operation. When adjusting, the fastening nut needs to be loosened. The adjustment without stopping the machine is achieved by the self-locking property of the threaded connection between the screw rod and the adjusting support.

[0017] 2. This application achieves fine-tuning by adjusting the adjusting screw to drive the adjusting arm, and then adjusting the eccentric shaft of the adjusting arm to rotate, which is suitable for occasions where precise control is required at the end.

[0018] 3. This application uses a ball joint bearing at the rod end to compensate for the arc-shaped motion trajectory of the swing arm, resulting in a simple structure and low implementation cost. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this application.

[0020] Figure 2 This is a front view of the present application.

[0021] Figure 3 This is a schematic diagram of the structure of this application.

[0022] Figure 4 This is a cross-sectional schematic diagram of this application.

[0023] In the attached image:

[0024] 1-Adjusting screw, 2-Ball joint bearing, 3-Adjusting handle, 4-Fasting nut, 5-Adjusting support, 6-Eccentric pressing roller, 7-Concentric pressing roller, 8-Transmission assembly, 61-Eccentric shaft, 62-Roller, 81-Sprocket, 82-Driving gear, 83-Driven gear. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this application, it should be noted that the terms "upper," "vertical," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example 1

[0031] like Figures 1-2As shown, a stepless adjustment mechanism for dough thickness includes a mounting frame and a pair of dough pressing rollers fixed on the mounting frame. The dough pressing rollers include a concentric dough pressing roller 7 and an eccentric dough pressing roller 6. A dough pressing channel is formed between the concentric dough pressing roller 7 and the eccentric dough pressing roller 6. One end of the eccentric dough pressing roller 6 is connected to an adjusting handle 3. The adjusting handle 3 is connected to an adjusting screw 1 that reciprocates. The adjusting screw 1 drives the adjusting handle 3 to rotate. When the adjusting screw 1 drives the adjusting handle 3 to rotate, the adjusting handle 3, being connected to one end of the eccentric dough pressing roller 6, drives the eccentric dough pressing roller 6 to rotate, thereby changing the distance between the eccentric dough pressing roller 6 and the concentric dough pressing roller 7. This adjusts the spacing of the dough pressing channel, ultimately achieving real-time stepless adjustment of the dough thickness.

[0032] The free end of the adjusting handle 3 is connected to one end of the connecting rod, the other end of the connecting rod is connected to one end of the ball joint bearing 2, and the other end of the ball joint is connected to the adjusting screw 1. The adjusting screw 1 drives the ball joint bearing 2 to move linearly together, the ball joint bearing 2 drives the connecting rod to move, and the connecting rod drives the adjusting handle 3 to rotate around the eccentric shaft 61. Due to the action of the ball joint bearing 2, the adjusting screw 1 can ultimately achieve the effect of driving the adjusting handle 3 to rotate.

[0033] An adjusting support 5 is fixed on the mounting bracket. One end of the adjusting support 5 is provided with a bent part. A threaded hole is opened on the bent part. The adjusting screw 1 passes through the threaded hole. A fastening nut 4 is on the adjusting screw 1 and is located next to the bent part.

[0034] The eccentric pressing roller 6 includes a pressing roller and an eccentric rotating shaft, wherein the eccentric rotating shaft and the central axis of the pressing roller are eccentrically distributed.

[0035] Example 2

[0036] like Figure 1 and Figure 2 As shown, a stepless adjustment mechanism for dough thickness includes a mounting frame and a pair of dough pressing rollers fixed on the mounting frame. The dough pressing rollers include a concentric dough pressing roller 7 and an eccentric dough pressing roller 6. A dough pressing channel is formed between the concentric dough pressing roller 7 and the eccentric dough pressing roller 6. One end of the eccentric dough pressing roller 6 is connected to an adjusting handle 3. The adjusting handle 3 is connected to an adjusting screw 1 that reciprocates. The adjusting screw 1 drives the adjusting handle 3 to rotate. When the adjusting screw 1 drives the adjusting handle 3 to rotate, the adjusting handle 3, being connected to one end of the eccentric dough pressing roller 6, drives the eccentric dough pressing roller 6 to rotate, thereby changing the distance between the eccentric dough pressing roller 6 and the concentric dough pressing roller 7. This adjusts the spacing of the dough pressing channel, ultimately achieving real-time stepless adjustment of the dough thickness.

[0037] The free end of the adjusting handle 3 is connected to one end of the connecting rod, the other end of the connecting rod is connected to one end of the ball joint bearing 2, and the other end of the ball joint is connected to the adjusting screw 1. The adjusting screw 1 drives the ball joint bearing 2 to move linearly together, the ball joint bearing 2 drives the connecting rod to move, and the connecting rod drives the adjusting handle 3 to rotate around the eccentric shaft 61. Due to the action of the ball joint bearing 2, the adjusting screw 1 can ultimately achieve the effect of driving the adjusting handle 3 to rotate.

[0038] An adjusting support 5 is fixed on the mounting bracket. One end of the adjusting support 5 is provided with a bent part. A threaded hole is opened on the bent part. The adjusting screw 1 passes through the threaded hole. A fastening nut 4 is on the adjusting screw 1 and is located next to the bent part.

[0039] The eccentric pressing roller 6 includes a pressing roller and an eccentric rotating shaft, wherein the eccentric rotating shaft and the central axis of the pressing roller are eccentrically distributed.

[0040] like Figure 3 and Figure 4 As shown, the eccentric pressing roller 6 includes an eccentric shaft 61 and a roller 62. The eccentric shaft 61 and the roller 62 are connected by a bearing. A driven gear 83 for transmission is fixed on the roller 62.

[0041] A sprocket 81 and a drive gear 82 are fixed on the concentric pressing roller 7 for transmission, and the drive gear 82 and the driven gear 83 mesh.

[0042] A chain is mounted on a sprocket 81, and the chain is wound around the output end of a motor. The output end of the motor drives the chain to rotate. The output end of the motor can also be connected to another sprocket 81, and the chain can be wound around both this sprocket 81 and the sprocket 81 connected to the concentric pressing roller 7, thereby driving the sprocket 81 connected to the concentric pressing roller 7 to rotate.

[0043] During operation, power is input via a chain to drive the sprocket 81, which drives the concentric pressing roller 7 to rotate. The power is then transmitted through the driving gear 82 and the driven gear 83, causing the roller 62 of the eccentric pressing roller 6 to rotate.

[0044] Example 3

[0045] The stepless fine-tuning mechanism for the pressing surface thickness consists of an adjusting screw 1, a ball joint bearing 2, an adjusting handle 3, a fastening nut 4, and an adjusting support 5. The adjusting screw 1 and the adjusting support 5 are connected by threads; the adjusting handle 3 is fixed to the eccentric pressing roller 6 by a set screw.

[0046] When adjusting the thickness, loosen the fastening nut 4, rotate the adjusting screw 1 to make it move axially, and swing the adjusting handle 3 through the ball joint bearing 2, thereby rotating the eccentric pressing roller 6. The gap between the eccentric pressing roller 6 and the concentric pressing roller 7 changes, achieving the purpose of thickness adjustment. After adjustment, tighten the fastening nut 4.

[0047] Stepless adjustment means that since the adjusting screw 1 can be rotated to any angle, the adjusting handle 3 can swing to any angle within a certain range, thus achieving stepless adjustment.

[0048] This application allows for adjustment during the dough pressing process: when the dough is being pressed, after rotating the adjusting screw 1 to a certain position to obtain a suitable dough thickness, the adjusting screw 1 is stopped. Due to the self-locking characteristic of the threaded connection between the adjusting screw 1 and the adjusting support 5, the adjusting mechanism can lock itself in place.

Claims

1. A mechanism for steplessly adjusting the thickness of a sheet, comprising a mounting frame and a pair of sheet-pressing rollers fixed to the mounting frame, characterized in that, The pressing rollers include a concentric pressing roller (7) and an eccentric pressing roller (6). The concentric pressing roller (7) and the eccentric pressing roller (6) form a pressing channel. One end of the eccentric pressing roller (6) is connected to an adjusting handle (3). The adjusting handle (3) is connected to an adjusting screw (1) that makes reciprocating motion. An adjusting support (5) is fixed on the mounting frame. The adjusting screw (1) is threadedly connected to the adjusting support (5). The adjusting screw (1) drives the adjusting handle (3) to rotate.

2. The mechanism according to claim 1, wherein The free end of the adjusting handle (3) is connected to one end of the connecting rod, the other end of the connecting rod is connected to one end of the ball joint bearing (2), and the other end of the ball joint is connected to the adjusting screw (1).

3. The mechanism according to claim 1, wherein The adjusting support (5) has a bent part at one end, and a threaded hole is provided on the bent part. The adjusting screw (1) passes through the threaded hole, and a fastening nut (4) is on the adjusting screw (1), and the fastening nut (4) is located next to the bent part.

4. The mechanism according to claim 1, wherein The eccentric pressing roller (6) includes a pressing roller and an eccentric rotating shaft, wherein the eccentric rotating shaft and the central axis of the pressing roller are eccentrically distributed.

5. The mechanism according to any one of claims 1 to 4, wherein The eccentric pressing roller (6) includes an eccentric shaft (61) and a roller (62), which are connected by bearings. A driven gear (83) for transmission is fixed on the roller (62).

6. The mechanism according to claim 5, wherein The concentric pressing roller (7) is fixed with a sprocket (81) and a drive gear (82) for transmission, and the drive gear (82) and the driven gear (83) mesh.

7. The mechanism according to claim 6, wherein A chain is provided on the sprocket (81), and the chain is wound around the motor output end.

Images