A dynamically following die-lining mechanism
Through the innovative mechanical structure and servo control of the dynamic following die-cutting surface mechanism, sensorless synchronous cutting is achieved, solving the efficiency and accuracy problems of traditional die-cutting equipment, improving production efficiency and cutting accuracy, and making it suitable for a variety of materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FURUI MACHINERY TECHNOLOGY CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional die-cutting equipment suffers from problems such as low efficiency in intermittent cutting, high dependence on sensors, large mechanical damage, and complex structure, resulting in insufficient production efficiency and cutting accuracy, especially in high-speed production scenarios where stability is insufficient.
The die-cutting surface mechanism adopts dynamic following, and achieves sensorless synchronous continuous cutting through mechanical structure integration and servo collaborative control. Combined with the design of eccentric wheel and linear bearing rod, the up and down drive of the cutting blade and the translational motion of the slide are decoupled, and synchronously follow the movement of the conveyor belt.
It has increased production efficiency by more than 40%, improved cutting accuracy to within 0.1mm, reduced mechanical damage, extended equipment lifespan, and expanded its application range to highly flexible and irregular surface materials.
Smart Images
Figure CN224489284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dough processing equipment, specifically to a dynamic following die-cutting dough mechanism. Background Technology
[0002] The die-cutting dough sheet mechanism is the core equipment in the dough sheet processing production line. It is mainly used to cut continuously conveyed dough sheets into specific shapes or sizes according to a preset trajectory.
[0003] With the increasing demands for precision and efficiency in dough processing in fields such as food processing and flexible electronics, traditional die-cutting equipment has gradually revealed the following problems: First, most existing equipment adopts an intermittent "convey-stop-cut-convey" mode, requiring frequent start-stop of the conveyor belt during the cutting process, which limits the effective number of cuts per unit time and makes it difficult to improve production efficiency; Second, in order to achieve equidistant cutting, some equipment needs to detect the position of the dough in real time through sensors, but the sensors are easily contaminated by dust and oil or cause cutting deviations due to response delay (usually ≥50ms), especially in high-speed production scenarios where stability is insufficient; Third, the inertial force when the conveyor belt starts and stops can easily cause the dough to stretch and deform or shift in positioning, affecting cutting accuracy; at the same time, frequent start-stop will aggravate the wear of motors and transmission components, shortening the service life of the equipment.
[0004] To address the aforementioned issues, this invention proposes a dynamically following die-cutting surface mechanism that achieves sensorless, synchronous, continuous, and efficient cutting through mechanical structure innovation and control logic optimization. Utility Model Content
[0005] The purpose of this invention is to provide a dynamic following die-cutting surface mechanism that solves the problems of low efficiency, high sensor dependence, large mechanical damage and complex structure of traditional die-cutting equipment by integrating mechanical structure and servo collaborative control, thereby realizing continuous high-precision dynamic cutting of flexible materials.
[0006] The technical solution provided by this utility model is a dynamic following die-cutting surface leather mechanism, including a conveyor belt, a positioning base frame, a lateral adjustment mechanism and a longitudinal shearing mechanism;
[0007] The positioning base frame is fixed to the inside of the conveyor belt, providing positioning and support functions for the main body;
[0008] The lateral adjustment mechanism includes two synchronous pulleys and a synchronous belt connecting the two synchronous pulleys. The synchronous pulleys are rotatably connected to one side of the positioning base frame, and the synchronous pulleys drive the synchronous belt to perform high-precision horizontal displacement.
[0009] The longitudinal shearing mechanism includes a movable frame fixed to a synchronous belt, a slide table slidably connected to the inner side of the conveyor belt, a linear bearing rod on the movable frame, and a cutting blade slidably connected to the linear bearing rod. The two ends of the slide table are fixedly connected to the movable frame, and the slide table is slidably connected to the positioning base frame through a guide rail.
[0010] As a preferred technical solution of this utility model, the two sides of the slide table protrude from the two sides of the conveyor belt and are connected downward to the drive frame. The drive frame is equipped with a drive motor, and the drive motor is located on both sides of the drive frame and is rotatably connected to the drive linkage through eccentric wheels.
[0011] As a preferred technical solution of this utility model, the top of the drive linkage is rotatably connected to the outer side of the cutting blade, and the rotational motion is converted into the up-and-down reciprocating motion of the cutting blade by the eccentric rotation of the eccentric wheel, and then the cutting speed of the cutting blade is adjusted by the rotational frequency of the drive motor.
[0012] In a preferred embodiment of this invention, the sliding direction of the slide table is the same as the moving direction of the conveyor belt, enabling the slide table to synchronize with the speed of the conveyor belt in real time via a lateral adjustment mechanism. During the downward cutting process, the slide table, the upper cutting blade, and the conveyor belt move in the same direction and at the same speed, achieving a relative speed of zero at the moment of cutting.
[0013] As a preferred embodiment of this utility model, the synchronous wheels are located on both sides of the slide table, and a servo motor for driving the synchronous wheel on one side to rotate is provided inside the positioning base.
[0014] As a preferred technical solution of this utility model, the two sides of the positioning base frame are provided with guide plates for limiting the conveyor belt located below the conveyor belt.
[0015] The advantages of this utility model compared with the prior art are as follows:
[0016] 1. Sensorless synchronous cutting improves production efficiency: The motion sequence of the conveyor belt and the cutting blade is directly linked through servo communication, eliminating the need to rely on sensors to detect the position of the sheet. This avoids cutting deviations caused by sensor contamination or response delay, while also eliminating the start-stop time of intermittent cutting, enabling continuous production and improving production efficiency by more than 40%.
[0017] 2. Dynamic following cutting reduces mechanical damage: The slide table and the conveyor belt move at the same speed and synchronously. The relative speed between the two is zero at the moment of cutting, which avoids the stretching deformation of the surface or the positioning offset caused by the speed difference, effectively improving the cutting accuracy (error ≤0.1mm), while reducing the impact load on mechanical parts and extending the service life of the equipment.
[0018] 3. Compact structure and simplified control logic: The compactness of the eccentric wheel is combined with the precision of servo control. The integrated design of "eccentric wheel + linear bearing rod" decouples the up and down drive of the cutting blade from the translational motion of the transverse slide, replacing the traditional complex linear module and reducing the manufacturing cost and maintenance difficulty of the equipment.
[0019] 4. Adaptable to flexible materials, expanding application scenarios: The sensorless synchronization solution avoids the limitations of traditional photoelectric sensors, and is especially suitable for highly flexible, reflective or irregularly shaped materials such as skin and silicone, making it more widely applicable. Attached Figure Description
[0020] Figure 1 This is a structural diagram of a dynamic following die-cutting surface mechanism according to this utility model.
[0021] Figure 2 This is a side view of a dynamic following die-cutting surface mechanism according to the present invention.
[0022] As shown in the figure:
[0023] 1. Conveyor belt; 2. Positioning base frame; 3. Synchronous pulley; 4. Synchronous belt; 5. Moving frame; 6. Slide table; 7. Linear bearing rod; 8. Cutting blade; 9. Drive frame; 10. Drive motor; 11. Eccentric wheel; 12. Drive connecting rod; 13. Guide plate. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Example 1:
[0027] As per the instruction manual Figure 1-2 As shown, a dynamic following die-cutting surface skin mechanism includes a conveyor belt 1, a positioning base frame 2, a lateral adjustment mechanism, and a longitudinal shearing mechanism.
[0028] Specifically, the positioning base frame 2 is welded from Q235 steel plate and is fixed to the inner side of the conveyor belt 1 (i.e., between the upper and lower sides of the conveyor belt 1) by bolts. A guide groove is provided on its top near the upper conveyor belt 1 to limit the movement trajectory of the slide table 6.
[0029] Specifically, the lateral adjustment mechanism includes two synchronous pulleys 3 and a synchronous belt 4 (toothed synchronous belt 4, pitch 2mm); the two synchronous pulleys 3 are rotatably connected to the left and right sides of the positioning base frame 2 respectively through deep groove ball bearings (the right synchronous pulley 3 is the driving pulley, and the left one is the driven pulley), and the synchronous belt 4 is tensioned between the two synchronous pulleys 3; a servo motor is provided on the right side inside the positioning base frame 2, and its output shaft is connected to the wheel axle of the right synchronous pulley 3 through a coupling, which is used to drive the synchronous belt 4 to move horizontally at a speed of 0.1-0.5m / s.
[0030] Specifically, the longitudinal shearing mechanism includes a movable frame 5, a slide table 6, linear bearing rods 7, and a cutting blade 8. The movable frame 5 is an L-shaped aluminum alloy frame structure, with its bottom fixed to the upper side of the synchronous belt 4 via countersunk screws (a fixing point is set every 50mm), and moves synchronously with the synchronous belt 4. The slide table 6 is a rectangular steel plate, with its bottom slidably connected to the guide groove on the top of the positioning base frame 2 via linear sliders, and its two ends fixed to the sides of the movable frame 5 via bolts. The linear bearing rods 7 are two parallel chrome-plated rods, vertically fixed to the top of the movable frame 5. The cutting blade 8 is made of stainless steel, with guide sliders on both sides that match the linear bearing rods 7. The guide sliders are slidably connected to the linear bearing rods 7 via linear bearings, and can move up and down along the linear bearing rods 7.
[0031] Specifically, a connecting plate extends downward from each of the left and right sides of the slide table 6. A drive frame 9 is connected to the bottom of the connecting plate. A drive motor 10 is installed inside the drive frame 9. Its output shaft is connected to a transmission shaft through a coupling. The two ends of the transmission shaft pass through the two sides of the drive frame 9 and are connected to an eccentric wheel 11 through a key. The outer circumference of the eccentric wheel 11 is rotatably connected to one end of a drive linkage 12 through a pin. The other end of the drive linkage 12 is rotatably connected to the guide slider on the outside of the cutting blade 8 through a pin.
[0032] Specifically, when the drive motor 10 starts, the eccentric wheel 11 rotates around the output shaft, and the rotational motion is converted into the up-and-down reciprocating motion of the cutting blade 8 through the drive linkage 12; by adjusting the speed of the drive motor 10 (frequency range: 50-200Hz), the cutting speed of the cutting blade 8 can be steplessly adjusted (range: 10-50 times / minute).
[0033] Specifically, the positioning base frame 2 is provided with guide plates 13 on both sides, the bottom of which contacts the bottom sides of the conveyor belt 1 to limit the horizontal deviation of the conveyor belt 1.
[0034] Working principle
[0035] 1. Initial Positioning: Before the equipment is started, the synchronous wheel 3 is driven to rotate by the servo motor, so that the synchronous belt 4 drives the moving frame 5, the slide table 6 and the cutting blade 8 to move to the initial position;
[0036] 2. Continuous conveying and synchronous following: After the production line is started, the conveyor belt 1 continuously conveys the dough at a constant speed (e.g., 0.3m / s); at the same time, the servo motor drives the synchronous belt 4 according to the preset cutting sequence (e.g., cutting once every 100mm interval), so that the slide table 6 moves synchronously with the synchronous belt 4 at the same speed as the conveyor belt 1, ensuring that the relative position of the slide table 6 and the dough remains unchanged.
[0037] 3. Dynamic cutting execution: As the slide table 6 moves with the conveyor belt 1, the drive motor 10 starts and drives the cutting blade 8 to move up and down through the eccentric wheel 11 and the drive linkage 12. Since the slide table 6 and the conveyor belt 1 move at the same speed, the relative speed between the cutting blade 8 and the conveyor belt 1 is zero at the moment of downward cutting, which avoids the stretching of the surface or the misalignment of the cutting due to the speed difference.
[0038] 4. Cyclic operation: After the cutting is completed, the cutting blade 8 moves up to the initial position with the drive linkage 12, and the slide table 6 continues to move synchronously with the synchronous belt 4 and the conveyor belt 1 to enter the next cutting cycle, realizing continuous dynamic die cutting of the dough.
[0039] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.
Claims
1. A dynamic following die-cutting leather mechanism, comprising a conveyor belt (1), characterized in that: The positioning base frame (2) is fixed to the inside of the conveyor belt (1) to provide positioning and support functions for the main body; The lateral adjustment mechanism includes two synchronous pulleys (3) and a synchronous belt (4) connecting the two synchronous pulleys (3). The synchronous pulleys (3) are rotatably connected to one side of the positioning base frame (2), and the synchronous belt (4) is driven by the synchronous pulleys (3) to perform high-precision horizontal displacement. The longitudinal shearing mechanism includes a movable frame (5) fixed on the synchronous belt (4), a slide table (6) slidably connected to the inside of the conveyor belt (1), a linear bearing rod (7) provided on the movable frame (5), and a cutting blade (8) slidably connected to the linear bearing rod (7) up and down. The two ends of the slide table (6) are fixedly connected to the movable frame (5), and the slide table (6) is slidably connected to the positioning base frame (2) through the guide rail.
2. The dynamically following die-cutting faceplate mechanism according to claim 1, characterized in that: The slide (6) protrudes from both sides of the conveyor belt (1) and is connected downward to the drive frame (9). The drive frame (9) is equipped with a drive motor (10), and the drive motor (10) is located on both sides of the drive frame (9) and is rotatably connected to the drive linkage (12) through the eccentric wheel (11).
3. The dynamically following die-cutting faceplate mechanism according to claim 2, characterized in that: The top of the drive linkage (12) is rotatably connected to the outside of the cutting blade (8). The rotational motion is converted into the up-and-down reciprocating motion of the cutting blade (8) by the eccentric rotation of the eccentric wheel (11), and the cutting speed of the cutting blade (8) is adjusted by the rotational frequency of the drive motor (10).
4. The dynamically following die-cutting faceplate mechanism according to claim 1, characterized in that: The sliding direction of the slide (6) is the same as the moving direction of the conveyor belt (1), so that the slide (6) can be synchronized with the speed of the conveyor belt (1) in real time through the lateral adjustment mechanism; during the downward cutting process, the slide (6), the upper cutting blade (8) and the conveyor belt (1) have the same running direction and the same speed, so that the relative speed is zero at the moment of cutting.
5. The dynamically following die-cutting faceplate mechanism according to claim 1, characterized in that: The synchronous wheels (3) are located on both sides of the slide (6), and the positioning base (2) is equipped with a servo motor that drives the synchronous wheels (3) on one side to rotate.
6. The dynamically following die-cutting faceplate mechanism according to claim 1, characterized in that: The positioning base frame (2) has guide plates (13) on both sides below the conveyor belt (1) to limit the movement of the conveyor belt (1).