Numerical control modular thresher frame device

Abstract

The invention discloses a numerical control modular thresher frame fence device, and relates to the technical field of tobacco leaf processing equipment, the numerical control modular thresher frame fence device comprises a frame fence, the frame fence is of a hollow plate-shaped structure, and a plurality of first through holes are distributed in the frame fence at intervals; the replacement mold comprises a plurality of hole mounting plates which are mounted side by side at intervals, the plurality of hole mounting plates are fixed into a whole, and the replacement mold is provided with second through holes which are in one-to-one correspondence with the first through holes; a plurality of replacement molds are slidably mounted in the hollow structure of the frame column, and second through holes in the replacement molds are different in shape; when a plurality of replacement dies slide, the second through holes and the first through holes can be overlapped, the shape of the frame fence mesh holes can be changed, the tobacco leaf threshing device is suitable for customized threshing processing of various types of tobacco leaves, especially medium and thin cigarette raw materials, and the generation goals of'size reduction 'and'breakage control' can be taken into consideration.

Description

Technical Field

[0001] This application relates to the field of tobacco processing equipment technology, and in particular to a CNC modular leaf trimmer frame device. Background Technology

[0002] In the tobacco threshing and re-drying process, the threshing frame is a core component that determines the shape and size of the tobacco leaves. Currently, most threshing frames widely used in the industry are integrated, fixed structures, which have the following significant drawbacks:

[0003] Low efficiency in changing equipment: When different types of tobacco leaves need to be processed and different shapes or apertures of frames need to be changed, the main structure of the leaf trimmer must be disassembled and the machine must be stopped. The operation takes 40-60 minutes per time, which not only occupies a lot of production time, but also requires many operators, which seriously restricts production efficiency.

[0004] Poor processing adaptability: Traditional fixed frames cannot adjust the separation gap in real time according to the grade of tobacco leaves, such as upper leaves, middle leaves, and feed flow rate. Taking the processing of medium and fine cigarette raw materials as an example, the opening of the traditional diamond-shaped frame is an elongated diamond shape, and the difference between the length of its long and short diagonals can be more than 2:1. Long strips of large tobacco leaves tend to pass through "in the direction of length," with low damage to the leaf structure. This results in a large leaf rate in the finished product generally exceeding 15%, which cannot meet the fine requirements of medium and fine cigarettes for the shape of raw materials. At the same time, if the leaf-beating speed is forcibly adjusted to adapt, it will cause the breakage rate to surge, usually exceeding 1%, making it difficult to achieve the dual goals of "reducing large leaves" and "controlling breakage."

[0005] The term "reducing the size" refers to reducing the percentage of tobacco leaves with a size larger than a certain set standard in terms of total leaf weight after leaf trimming.

[0006] The term "minimum breakage control" refers to controlling the percentage of tobacco leaf fragments with a size smaller than a certain set standard to the total weight of the leaves after threshing.

[0007] Insufficient customization compatibility: Different brands of cigarettes have different requirements for the shape of tobacco leaves. Traditional fixed frames can only be adapted to the processing of a single or a few types of tobacco leaves, and cannot achieve flexible and customized processing of raw materials from multiple brands. The equipment has poor versatility.

[0008] In conclusion, how to solve the problem of inconvenience in replacing frames with different aperture sizes is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0009] In view of this, the purpose of this application is to provide a CNC modular leaf-beating frame device that can automatically change the shape of the frame mesh, which is suitable for customized leaf-beating processing of various types of tobacco leaves, especially medium and fine cigarette raw materials, and can achieve the goals of "reducing large leaves" (i.e., reducing the proportion of large leaves) and "controlling breakage" (i.e., controlling the generation of broken pieces).

[0010] To achieve the above objectives, this application provides a CNC modular leaf-cutting frame device, comprising:

[0011] The frame is a hollow plate-like structure, and a plurality of first through holes are spaced apart on the frame.

[0012] A replacement mold, comprising a plurality of hole mounting plates installed side by side at intervals, the plurality of hole mounting plates being fixed into a whole, and the replacement mold having second through holes corresponding one-to-one with the first through holes;

[0013] Several replacement molds are slidably installed in the hollow structure of the frame, and the second through hole in each of the several replacement molds has a different shape;

[0014] The replacement molds can achieve overlap between the second through hole and the first through hole when sliding.

[0015] Preferably, the frame is arc-shaped, and the frame includes an upper arc plate and a lower arc plate. The space between the upper arc plate (5) and the lower arc plate (6) provides installation space for the replacement mold.

[0016] Preferably, the replacement mold is arc-shaped and coaxial with the frame, and several replacement molds can slide relative to each other. Adjacent replacement molds and the replacement molds and the frame are connected by sliding grooves.

[0017] Preferably, a first toothed guide rail is fixed to both ends of the hole mounting plate, and a second toothed guide rail is slidably mounted on one end of the frame rail, with one end of the plurality of first toothed guide rails engaging with the second toothed guide rail.

[0018] Preferably, a third toothed guide rail is installed at the other end of the frame, and the other ends of the plurality of first toothed guide rails mesh with the third toothed guide rail, and a driving device is connected to the third toothed guide rail.

[0019] Preferably, the end of the frame is provided with a through groove, through which the first toothed guide rail engages with the second toothed guide rail and the third toothed guide rail.

[0020] Preferably, the driving device includes a motor compartment fixed on the frame, the motor compartment is equipped with a servo motor and a PLC control module, the PLC control module supports communication connection with the factory central control system, the output end of the servo motor is connected to the third toothed guide rail, and the motor compartment is equipped with a position sensor and an encoder to realize real-time positioning and deviation correction of the replacement mold movement.

[0021] Preferably, the end of the frame is provided with a limit lock for rigid fixation after the replacement mold is in place.

[0022] Preferably, the shape of the replacement mold includes rhombus, circle, equilateral triangle, regular hexagon, and asymmetrical hexagon.

[0023] Preferably, the frame is a wear-resistant stainless steel alloy or a tungsten carbide alloy, and the replacement mold is a wear-resistant tungsten carbide alloy.

[0024] Compared with the above-mentioned background technology, the CNC modular leaf-beater frame device provided in this application has the following advantages:

[0025] By replacing different types of replacement molds, the different second through holes on the different types of replacement molds overlap with the first through holes on the frame to form frame holes of new sizes, thereby achieving the purpose of adjusting the size and shape of the frame holes.

[0026] 1. The frame breaks through the limitations of the "integrated fixed structure" and realizes "rapid frame replacement without stopping the machine (only requiring a brief shutdown of the feeding)", reducing production interruption time and improving the annual effective operating rate of the equipment.

[0027] 2. In the further solution provided in this application, the purpose of optimizing processing adaptability can be achieved: through "modular mold design", flexible switching between multiple shapes (rhombus, circle, regular hexagon, etc.) and multiple sizes of frames can be realized. The separation gap can be adjusted in real time according to the tobacco grade and feed flow rate to ensure that the processing of medium and fine cigarette raw materials takes into account both the goals of "reducing size" and "controlling breakage".

[0028] 3. In the further solutions provided in this application, the goal of improving customization compatibility can be achieved: by “customizable molds + remote one-click switching”, a single machine can be adapted to the raw material sheet requirements of at least 3-5 brands, thereby improving the versatility of the equipment and realizing flexible and customized processing of tobacco leaves from multiple brands.

[0029] 4. In the further solution provided in this application, the positioning accuracy can be improved when the frame is replaced by "precise transmission of toothed guide rail + rigid fixation of electromagnetic limit lock", which can avoid tobacco leaves getting stuck in the mold gap and ensure the stability of the leaf shape and output rate after production resumes. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1This is a three-dimensional structural diagram of the CNC modular leaf-beater frame device according to an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the test results table for the processed samples of slim cigarette raw materials in the CNC modular leaf-beating frame device of this application embodiment.

[0033] The components include: 1. Limit lock; 2. Second toothed guide rail; 3. First toothed guide rail; 4. Third toothed guide rail; 5. Upper arc plate; 6. Lower arc plate; 7. Hole mounting plate; 8. Second through hole; 9. Motor compartment. Detailed Implementation

[0034] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0037] The CNC modular leaf cutter frame device provided in this application includes: a frame, a mold replacement door, and a replacement mold.

[0038] The frame 11 is a hollow plate-like structure with a "double-layer sandwich" design. Optionally, the frame 11 is made entirely of wear-resistant stainless steel alloy (model 304L) with a thickness of 8-10mm to ensure structural rigidity and resist impact and wear during the blade-beating process. The sandwich space has a width of 15-20mm, providing an installation and movement channel for the replacement mold 12.

[0039] The mold changing door is located on the side of the device near the drive end. It is opened and closed by hydraulic control. When closed, it is sealed to the inner and outer layers to prevent tobacco debris from entering the interlayer. The mold changing door is a non-essential structure and can be replaced by other baffle mechanisms.

[0040] Multiple first through holes 8 are spaced apart on the frame 11, and the first through holes 8 penetrate the frame 11. The first through holes 8 are arranged in a rectangular interval, and the shape of the first through holes 8 can be circular. The interval between adjacent first through holes 8 along the moving direction of the replacement mold 12 is greater than twice the diameter of the first through hole 8, ensuring that the interval can completely block and cover the second through holes 10 on the unused replacement mold 12.

[0041] The replacement mold 12 includes multiple hole mounting plates 7 installed side-by-side at intervals. The multiple hole mounting plates 7 are fixed into a whole by connectors. The replacement mold 12 is provided with second through holes 10 that correspond one-to-one with the first through holes 8. It is worth noting that the second through hole 10 on each hole mounting plate 7 corresponds to the horizontal row of first through holes 8 on the frame 11. The number of hole mounting plates 7 is consistent with the number of rows of first through holes 8 on the frame 11. The hole mounting plates 7 must not obstruct the first through holes 8.

[0042] Several replacement molds 12 are slidably installed in the hollow structure of the frame 11, and the second through holes 10 in the replacement molds 12 are all different in shape. Optionally, the replacement molds 12 are made of wear-resistant tungsten steel alloy with a thickness of 5-6mm, and can be customized into shapes such as rhombus, circle, equilateral triangle, regular hexagon, and asymmetrical hexagon according to processing requirements.

[0043] Optionally, the size of the second through hole 10 ranges from 5 to 20 mm (diameter accuracy ±0.1 mm). 3-5 sets of spare molds can be built inside. The first toothed guide rail 3 on the spare mold is coaxially arranged with the second toothed guide rail 2, and they are arranged sequentially within the air structure of the frame 11. The surface of the replacement mold 12 is chrome-plated to reduce the coefficient of friction during mold movement.

[0044] Several replacement molds 12 can achieve the overlap of the second through hole 10 and the first through hole 8 when sliding.

[0045] The frame 11 of the CNC modular leaf cutter breaks through the limitations of the integrated fixed structure, enabling the frame 11 to be quickly replaced without stopping the machine (only requiring a brief shutdown of the feed), reducing production interruption time and improving the annual effective operating rate of the equipment.

[0046] Multiple replacement molds are slidably installed inside the frame 11. By replacing the second through hole 10 with different hole shapes and sizes on the molds and matching the first through hole 8, the overall hole shape and size of the frame 11 can be changed, thereby adapting to the leaf-beating requirements of different materials.

[0047] Based on the above embodiment, the frame 11 is arc-shaped, and the frame 11 includes an upper arc plate 5 and a lower arc plate 6. The lower arc plate 6 is made of wear-resistant stainless steel alloy (model 304L) with a thickness of 8-10mm to ensure structural rigidity and resist impact and wear during the blade-beating process.

[0048] The upper arc plate 5 and the lower arc plate 6 are coaxially arranged and their ends are kept flush. The upper arc plate 5 and the lower arc plate 6 are made of the same material. The replacement mold 12 is installed and moved in the sandwich space formed between the upper arc plate 5 and the lower arc plate 6.

[0049] Optionally, the thickness of the upper arc plate 5 and the lower arc plate 6 is 6-8mm, and the thickness of the interlayer space formed between the inner and outer layers is 15-20mm.

[0050] It should be noted that the thickness of the interlayer space formed between the inner and outer layers should be within the range that allows for the loading of multiple replacement molds 12, and the thickness of the upper arc plate 5 and the lower arc plate 6 should be sufficient to meet the support requirements. The above dimensions are only provided as a specific installation dimension.

[0051] Based on the above embodiment, the replacement mold 12 is arc-shaped and coaxial with the frame 11. Several replacement molds 12 can slide relative to each other. Adjacent replacement molds 12 and the replacement mold 12 and the frame 11 are connected by sliding grooves, wherein the sliding grooves are chrome-plated to reduce the coefficient of friction of the mold movement. At the same time, the sliding groove connection can also reduce the coefficient of friction between the replacement molds 12, making sliding control more convenient.

[0052] Based on the above embodiment, the two ends of the hole mounting plate 7 are respectively fixed with the first toothed guide rail 3, and the frame 11 is slidably mounted with the second toothed guide rail 2. One end of the multiple first toothed guide rails 3 meshes with the second toothed guide rail 2. The multiple hole mounting plates 7 mesh with the first toothed guide rails 3 and the second toothed guide rail 2 to ensure the straightness and stability of the replacement mold 12 during movement.

[0053] Meanwhile, the sliding installation of the second toothed guide rail 2 provides stable support for the subsequent movement of the replacement template. The tooth pitch of the first toothed guide rail 3 and the second toothed guide rail 2 is 2mm, and the surface is chrome-plated with a friction coefficient ≤0.1, ensuring the smoothness and wear resistance of the mold movement.

[0054] It should be noted that the first toothed guide rail 3 on each replacement mold corresponds to a second toothed guide rail 2, and the second toothed guide rails 2 corresponding to multiple replacement molds are slidably connected.

[0055] Based on the above embodiment, a third toothed guide rail 4 is installed at the other end of the frame 11, and the other ends of the plurality of first toothed guide rails 3 mesh with the third toothed guide rail 4. A driving device is connected to the third toothed guide rail 4.

[0056] The third toothed guide rail 4 has a tooth pitch of 2mm and is chrome-plated. Its friction coefficient is ≤0.1, ensuring the smoothness and wear resistance of the mold movement.

[0057] In the replacement mold 12, each of the two arc-shaped ends of the multiple mounting plates is equipped with a first toothed guide rail 3. The sliding of the multiple hole mounting plates 7 is achieved by the meshing of the second toothed guide rail 2, which is slidably mounted on one side of the frame, with the multiple first toothed guide rails. The other end of the multiple first toothed guide rails 3 meshes with the third toothed guide rail 4, which is mounted on the other side of the frame 11, and is driven by the third toothed guide rail 4. Thus, the two ends of the replacement mold 12 are fixed, while ensuring straightness and stability during movement.

[0058] It should be noted that the first toothed guide rail 3 on each replacement mold corresponds to a third toothed guide rail 4, and multiple replacement molds are slidably connected to each other with multiple third toothed guide rails 4 respectively.

[0059] Based on the above embodiment, the end of the frame 11 is provided with a through groove. The first toothed guide rail 3 engages with the second toothed guide rail 2 and the third toothed guide rail 4 through the through groove. The through groove provides a connection space for the connection between the first toothed guide rail 3 and the second toothed guide rail 2, and between the first toothed guide rail 3 and the third toothed guide rail 4, while ensuring that the overall structure of the frame 11 is not damaged.

[0060] Based on the above embodiments, the driving device includes a motor compartment 9 fixed on the frame 11. The motor compartment 9 is equipped with a servo motor and a PLC control module. The PLC control module supports communication connection with the factory central control system. The output end of the servo motor is connected to the third toothed guide rail 4. The motor compartment 9 is equipped with a position sensor and an encoder to realize real-time positioning and deviation correction of the replacement mold 12 movement.

[0061] It has a built-in servo drive motor (power 0.75kW, speed 1500r / min) and PLC control module. The control module can communicate with the factory central control system and supports one-button remote operation. The output end of the servo motor is connected to the third toothed guide rail 4 to provide it with reciprocating driving force, thereby driving the replacement mold 12 to slide axially along the frame 11.

[0062] It should be noted that each of the third toothed guide rails 4 is equipped with a corresponding servo motor to facilitate the individual movement of different replacement molds.

[0063] Based on the above embodiments, a limit lock 1 is provided at the end of the frame 11 to replace the rigid fixation after the mold 12 is in place.

[0064] The second toothed guide rail 2 is fixed inside the lower arc plate 6 and parallel to the first toothed guide rail 3. It is used to limit the movement trajectory of the replacement mold 12. When the replacement mold 12 moves to the target position, the PLC control module triggers the limit lock 1 (electromagnetic locking structure), which is inserted into the positioning hole on the edge of the mold to achieve rigid fixation of the mold. The locking accuracy is ±0.05mm, the locking response time is ≤0.5s, and the locking force is ≥500N, preventing the mold from shifting during the leaf-making process.

[0065] Based on the above embodiments, the shape of the replacement mold 12 includes rhombus, circle, equilateral triangle, regular hexagon, and asymmetrical hexagon, with a mesh size range of 2-4 inches and a hole diameter accuracy of ±0.1 inches.

[0066] Based on the above embodiments, the frame structure is made of wear-resistant stainless steel alloy or tungsten carbide alloy, and the replacement mold 12 is made of wear-resistant tungsten carbide alloy.

[0067] The specific operation of this device is as follows:

[0068] Example of adapting raw materials for slim cigarettes:

[0069] The leaf removal process usually adopts a progressive multi-stage leaf removal method. The first stage of leaf removal is mainly responsible for the initial stripping of the leaves. The speed setting needs to take into account the destemming efficiency and avoid excessive breakage. The subsequent third and fourth stages of leaf removal further separate the sticky stems and leaves, and pay more attention to controlling the leaf structure and improving the yield of long stems.

[0070] 1. Device parameter settings

[0071] The lower arc plate 6 is made of 304L stainless steel alloy. The experiment was conducted in the first stage of the leaf-beating machine. The second, third and fourth stage leaf-beating machines all adopted the same settings: the second stage diamond frame is 112.5in, the third stage diamond frame is 112.5in, and the fourth stage circular frame is 112in.

[0072] Number of built-in sheet molds: 4 sets, namely: M1 (diamond, 3.5in aperture, initial working mold), M2 (regular hexagon, 3.0in aperture, for medium and fine raw materials), M3 (octagonal circle, 3.0in aperture, spare), M4 (circular, 3.0in aperture, spare);

[0073] Drive motor: Servo motor (Model: Panasonic A6 series, power 0.75kW);

[0074] Control module: PLC (model: Siemens S7-1200), supports Modbus communication protocol, and interfaces with the factory MES system.

[0075] 2. Processing flow

[0076] Initial state: The device is equipped with M1 mold, processes conventional cigarette raw materials, feed flow rate is 12000 kg / h, leaf turning speed is 600 r / min; the output material is set as CK.

[0077] Raw material switching: When processing medium and fine cigarette raw materials (upper leaves, moisture content 17%), the central control system issues a change command and selects mold M2;

[0078] Mold replacement: Follow the above sequence procedure. The replacement takes 2 minutes and 48 seconds. During this time, the leaf-cutting machine continues to run (only the feeding is paused).

[0079] Processing monitoring: After resuming feeding (flow rate 12000 kg / h, rotation speed 600 r / min) and production stabilizing, sample 3 groups of samples (3000 g per group) every half hour. The test results are as follows: Figure 2 As shown.

[0080] Experimental results show that, as can be seen from the above analysis, different samples exhibit differences in various indicators. The leaf-beating technology parameters for medium and thin cigarettes can effectively reduce the breakage rate. Regarding stem removal, the frame size and leaf shape of the experimental samples can be widely adopted, and are significantly superior to traditional frame 11 in terms of efficiency, processing quality, and service life.

[0081] Replacement process for frame 11:

[0082] The workflow is as follows: close the feed valve, return the old mold to the spare position, move the new mold to the working position, lock the limit lock 1, and open the feed valve. Each step is fully automatically controlled by the PLC, and each action node is equipped with a signal feedback mechanism to ensure the continuity of the process.

[0083] Specifically, the following steps are included:

[0084] T0-T1: The central control system issues a replacement command and closes the leaf cutter feed valve, which takes 10 seconds;

[0085] T1-T2: The drive motor starts, and the third toothed guide rail 4 drives the old replacement mold 12 to retract to the standby position along the axis of the frame 11, which takes 30-60 seconds.

[0086] T2-T3: The drive motor reverses, causing the new replacement mold 12 to move along the axis of the frame 11 to the working position, which takes 30-60 seconds;

[0087] T3-T4: Limit lock 1 pops out, locking the new replacement mold 12; mold replacement door closes, taking 20 seconds;

[0088] T4-T5: Open the leaf cutter feed valve to resume production, taking 10 seconds.

[0089] The entire replacement process does not require machine downtime and takes only 2-5 minutes, which is more than 90% shorter than the traditional manual replacement method (40-60 minutes).

[0090] In summary, the advantages of this invention are:

[0091] 1. Significantly improved efficiency: The replacement time of the frame 11 is reduced from the traditional 40-60 minutes to 2-5 minutes, and the annual downtime of a single leaf trimming machine is reduced by about 500 hours (calculated based on an average of 2 replacements per day), increasing production efficiency by 15%-20%;

[0092] 2. Processing quality optimization: Through the adaptation of multi-shape replacement molds 12, the separation gap can be adjusted according to the type of tobacco leaf. For example, when processing medium-slim cigarette raw materials, using a regular hexagonal mold (3-inch aperture) can reduce the large leaf rate from 15%-18% of the traditional diamond-shaped frame 11 to 6%-8%, and control the breakage rate at 0.6-0.8%, thus achieving both the goals of "reducing large leaves" and "controlling breakage".

[0093] 3. Highly customizable and compatible: The mold can be customized according to the raw material standards of different brands of cigarettes (e.g., a certain brand of slim cigarette raw materials requires a round mold with a hole diameter of 3 inches; a certain brand of regular cigarettes requires a diamond mold with a hole diameter of 3.5 inches), realizing "one machine with multiple functions" and improving the equipment's versatility by more than 80%.

[0094] 4. High structural stability: It adopts wear-resistant alloy material and precision toothed guide rail transmission, with mold locking accuracy of ±0.05mm and device service life of more than 5 years (the service life of traditional frame rail 11 is about 2-3 years), reducing equipment maintenance costs by 30%.

[0095] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0096] The CNC modular leaf-beater frame 11 device provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A CNC modular leaf-cutting frame device, characterized in that, include: The frame (11) is a hollow plate structure, and a plurality of first through holes (8) are distributed at intervals on the frame (11). The replacement mold includes multiple hole mounting plates (7) installed side by side at intervals, the multiple hole mounting plates (7) are fixed into a whole, and the replacement mold is provided with second through holes (10) that correspond one-to-one with the first through holes. Several replacement molds (12) are slidably installed in the hollow structure of the frame, and the second through hole (10) in the several replacement molds (12) has a different shape; The replacement molds (12) can achieve overlap between the second through hole (10) and the first through hole when sliding.

2. The CNC modular leaf-cutting frame device according to claim 1, characterized in that, The frame (11) is arc-shaped and includes an upper arc plate (5) and a lower arc plate (6). The space between the upper arc plate (5) and the lower arc plate (6) provides installation space for the replacement mold.

3. The CNC modular leaf-cutting frame device according to claim 2, characterized in that, The replacement mold (12) is arc-shaped and coaxial with the frame (11). Several replacement molds (12) can slide relative to each other. Adjacent replacement molds (12) and the replacement mold (12) and the frame (11) are connected by a sliding groove.

4. The CNC modular leaf-cutting frame device according to claim 3, characterized in that, The two ends of the hole mounting plate (7) are respectively fixed with first toothed guide rails (3), and one end of the frame (11) is slidably mounted with a second toothed guide rail (2). One end of the plurality of first toothed guide rails (3) meshes with the second toothed guide rail (2).

5. The CNC modular leaf-cutting frame device according to claim 4, characterized in that, The other end of the frame (11) is equipped with a third toothed guide rail (4), and the other ends of the plurality of first toothed guide rails (3) mesh with the third toothed guide rail (4). A drive device is connected to the third toothed guide rail (4).

6. The CNC modular leaf-cutting frame device according to claim 5, characterized in that, The frame (11) has a through groove at its end, and the first toothed guide rail (3) engages with the second toothed guide rail (2) and the third toothed guide rail (4) through the through groove.

7. The CNC modular leaf-cutting frame device according to claim 6, characterized in that, The driving device includes a motor compartment (9) fixed on the frame (11). The motor compartment (9) is equipped with a servo motor and a PLC control module. The PLC control module supports communication connection with the factory central control system. The output end of the servo motor is connected to the third toothed guide rail (4). The motor compartment (9) is equipped with a position sensor and an encoder to realize real-time positioning and deviation correction of the replacement mold (12) movement.

8. The CNC modular leaf-cutting frame device according to claim 2, characterized in that, The end of the frame (11) is provided with a limit lock (1) for rigid fixation after the replacement mold (12) is in place.

9. The CNC modular leaf-cutting frame device according to any one of claims 1-8, characterized in that, The shape of the replacement mold (12) includes rhombus, circle, equilateral triangle, regular hexagon, and asymmetrical hexagon.

10. The CNC modular leaf-cutting frame device according to any one of claims 1-8, characterized in that, The frame (11) is a wear-resistant stainless steel alloy or tungsten steel alloy, and the replacement mold (12) is a wear-resistant tungsten steel alloy.

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