Straw high-speed cutting mechanism

Abstract

This utility model discloses a high-speed straw cutting mechanism, belonging to the field of food processing technology. It includes a supporting main body, a heat-dissipating reciprocating drive component on one side of the supporting main body, a guide moving component on one side of the heat-dissipating reciprocating drive component, and a cutting component on one side of the guide moving component. The heat-dissipating reciprocating drive component includes a servo motor, which is located on one side of the supporting main body. A connecting rod is provided at the output end of the servo motor. A heat-dissipating impeller and an eccentric sleeve are respectively sleeved on the outer side of the connecting rod. A guide plate is movably connected to one side of the eccentric sleeve. This utility model uses a servo motor as the driving core, which has precise speed and stroke control capabilities. It can flexibly adjust the reciprocating frequency and movement amplitude of the cutting component according to the straw cutting requirements, meeting high-precision production needs. Compared with cylinder drive, its cutting efficiency is high.

Description

Technical Field

[0001] This utility model relates to a high-speed straw cutting mechanism, belonging to the field of food processing technology. Background Technology

[0002] In the food processing industry, straw pasting machines are a widely used type of automated equipment used to automatically pick up individual straws and paste them onto packaging boxes, Tetra Pak cartons, or individual packaging bags. The core feeding process usually requires high-speed and precise cutting of rolls of continuous plastic straw film, i.e., rows of straws, into individual straws of fixed length so that subsequent fork mechanisms or robotic arms can pick them up one by one and paste them.

[0003] Currently, the straw cutting mechanisms commonly used in this type of equipment mostly adopt traditional rotary cutting or pneumatic punching methods. Rotary cutting uses a motor to drive the blade roller to rotate continuously, which works in conjunction with a fixed bottom blade to achieve cutting. Its disadvantages are that the structure is complex, the cutting length is not easy to adjust, and it is prone to vibration due to inertia when running at high speed, which affects the cutting accuracy and stability. The pneumatic punching mechanism relies on the cylinder to drive the cutter to perform reciprocating linear motion. Although the structure is relatively simple, its cutting speed is limited by the air source pressure and the reciprocating frequency of the cylinder, making it difficult to meet the ever-increasing production cycle requirements of modern high-speed tube bonding machines. In addition, under long-term continuous high-speed operation, the drive motor or pneumatic components of these two methods will generate a lot of heat, resulting in excessive temperature rise of the equipment, which in turn affects the control accuracy of the servo motor, the life of the cylinder seals, and even causes thermal deformation of the material. Ultimately, this leads to unstable cutting, uneven cut surfaces, or equipment shutdown for cooling, which seriously restricts the improvement of production efficiency and product qualification rate. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a high-speed straw cutting mechanism.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A high-speed straw cutting mechanism includes a supporting main body. A heat-dissipating reciprocating drive is provided on one side of the supporting main body. A guide moving part is provided on one side of the heat-dissipating reciprocating drive. A cutting part is provided on one side of the guide moving part. The heat-dissipating reciprocating drive includes a servo motor, which is located on one side of the supporting main body. A connecting rod is provided at the output end of the servo motor. A heat-dissipating impeller and an eccentric sleeve are respectively sleeved on the outer side of the connecting rod. A guide plate is movably connected to one side of the eccentric sleeve.

[0006] Through the above technical solution, the supporting main body provides the basic installation and support carrier for the entire cutting mechanism, ensuring the stable assembly of each functional component. In the heat dissipation reciprocating drive component, after the servo motor starts, it outputs power to drive the connecting rod connected to it to rotate. When the connecting rod rotates, on the one hand, it drives the heat dissipation impeller component sleeved on the outside to rotate synchronously, and the airflow generated by the impeller rotation achieves heat dissipation. On the other hand, it drives the eccentric sleeve to perform eccentric motion. The eccentric motion of the eccentric sleeve is converted into the reciprocating linear motion of the guide plate. The guide plate then transmits the reciprocating motion to the guide moving component on one side. Finally, the guide moving component drives the cutting component to perform reciprocating linear motion, completing the high-speed cutting action of the suction tube.

[0007] Driven by a servo motor, it has high-precision speed and motion control capabilities, which can accurately adjust the reciprocating frequency and stroke of the cutting parts, ensuring the consistency of the straw cutting length and improving cutting accuracy.

[0008] The heat dissipation impeller rotates synchronously with the connecting rod, which can dissipate heat from the servo motor and surrounding transmission components in real time. This effectively reduces the heat accumulation caused by high-speed operation, prevents components from experiencing performance degradation or damage due to high temperature, extends the service life of the drive components, and ensures the mechanism operates stably at high speed for a long time.

[0009] The combination of the eccentric sleeve and the guide plate enables a smooth transition from rotary motion to reciprocating linear motion, reducing impact and vibration during motion transmission, providing stable cutting power for the cut parts, and reducing the deformation rate of the straw during the cutting process.

[0010] Preferably, the supporting main body includes a base plate, a first upright plate, a second upright plate, and an upper cover plate. The first upright plate and the second upright plate are arranged parallel and symmetrically on the upper side of the base plate. The upper cover plate is bolted to the upper side of the first upright plate and the second upright plate. The base plate, the first upright plate, the second upright plate, and the upper cover plate are spliced ​​in a rectangular frame structure.

[0011] Through the above technical solution, the base plate serves as the bottom foundation for supporting the main body, providing a stable mounting surface for the first and second upright plates. The first and second upright plates are fixed parallel and symmetrically on the upper side of the base plate, forming a vertical support structure on both sides for installing components such as guide moving parts and heat-dissipating reciprocating drive parts. The upper cover plate is bolted to the upper side of the first and second upright plates, and together with the base plate, the first upright plate, and the second upright plate, it is spliced ​​into a rectangular frame structure, enclosing each component inside the frame to form a complete support skeleton, providing structural stability for the entire cutting mechanism.

[0012] The rectangular frame structure is easy to assemble, and the components are connected by bolts, which facilitates assembly and subsequent maintenance and disassembly, reducing the difficulty and cost of equipment assembly and maintenance.

[0013] The rectangular frame structure formed by the symmetrically arranged first and second upright plates, together with the base plate and the top cover plate, has high structural strength and rigidity. It can effectively resist the impact and vibration generated during the cutting process, avoid deformation of the main supporting components, ensure the relative positional accuracy of each functional component, and provide structural guarantee for cutting accuracy.

[0014] Preferably, the guide moving component includes a slide rail connecting plate, the slide rail connecting plate is disposed on one side of the guide plate, a slide rail is disposed on one side of the slide rail connecting plate, a slider is disposed on the outer side of the slide rail, and one side of the slider is connected to one side of the first upright plate.

[0015] Through the above technical solution, in the guide moving component, the slide rail connecting plate is fixedly connected to the guide plate of the heat dissipation reciprocating drive component, and the reciprocating motion of the guide plate drives the slide rail connecting plate to move synchronously; the slide rail is fixed on one side of the slide rail connecting plate, and the slider is fixed on the first upright plate of the supporting main body component, and the slide rail and the slider form a sliding fit pair; when the slide rail connecting plate drives the slide rail to move, the slide rail slides precisely along the track of the slider in a straight reciprocating motion, thereby driving the cutting component connected to the slide rail connecting plate to make a smooth reciprocating cutting motion in a fixed direction.

[0016] The sliding fit structure of the slide rail and the slider can accurately guide the movement direction of the cutting part, limit the displacement of the cutting part in the non-cutting direction, ensure that the cutting part always moves along the set cutting path, and significantly improve the perpendicularity and cut flatness of the straw cutting.

[0017] The sliding fit has low frictional resistance, which reduces energy loss and makes the reciprocating motion of the cutting parts smoother, reduces the load on the servo motor, reduces component wear, and extends the service life of the guide moving parts.

[0018] The high precision of the slide rail and slider ensures the positional stability of the cut parts during high-speed reciprocating motion, avoids cutting errors caused by motion offset, and meets the requirements for motion precision in high-speed cutting scenarios.

[0019] Preferably, the cutting component includes a cutter connecting plate, which is disposed on one side of the slide rail connecting plate, and a cutter is disposed on one side of the cutter connecting plate, wherein the cutter is a serrated blade component.

[0020] Through the above technical solution, one end of the cutter connecting plate is fixedly connected to the slide rail connecting plate of the guide moving part, and the other end is connected to the cutter, realizing the transmission of power and motion; when the guide moving part drives the cutter connecting plate to make reciprocating linear motion, the cutter moves synchronously with the cutter connecting plate. Since the cutter adopts a serrated blade component, its serrated blade can quickly cut the straw through high-speed reciprocating motion when it comes into contact with the straw, thus completing the cutting operation.

[0021] The cutter uses a serrated blade component. The serrated blade increases the contact pressure with the straw, making it easier to cut the straw packaging under the same cutting power.

[0022] The cutter is stably connected to the guide moving part through the cutter connecting plate. The connection structure is firm and can prevent the cutter from loosening or shifting during high-speed cutting, thus ensuring the stability and reliability of the cutting action.

[0023] The serrated blade wears down relatively slowly, and only the cutting blade needs to be replaced during maintenance, without the need to replace the entire cutting component, thus reducing equipment maintenance costs and downtime.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a servo motor as the driving core, which has precise speed and stroke control capabilities. It can flexibly adjust the reciprocating frequency and movement amplitude of the cutting parts according to the straw cutting requirements, so as to meet the high-precision production requirements. Compared with cylinder drive, its cutting efficiency is high. In this invention, the heat dissipation impeller sleeved on the outside of the connecting rod rotates synchronously with the connecting rod, which can actively dissipate heat from the servo motor and surrounding transmission components in real time, quickly remove the heat generated by high-speed operation, avoid insulation aging and transmission efficiency reduction caused by high temperature, extend the service life of the drive system, ensure that the mechanism can continuously cut at high speed for a long time, and improve production efficiency.

[0025] This utility model features a movable connection structure between the eccentric sleeve and the guide plate, which can smoothly convert the rotational motion of the servo motor into the reciprocating linear motion of the guide plate, reducing the impact and vibration during motion transmission. On the one hand, it reduces the wear of the transmission components, and on the other hand, it provides stable power for the cutting parts, thereby improving the cutting quality. This utility model provides a stable mounting base for the main support component, enabling the heat-dissipating reciprocating drive component, guide moving component, and cutting component to form an orderly transmission link. The components fit together tightly, avoiding transmission failure caused by misalignment and ensuring the operational reliability of the entire cutting mechanism. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the front axonometric structure of this utility model; Figure 2 This is a schematic diagram of the rear axial side structure of this utility model; Figure 3 This is a side-axis view of one of the structures of this utility model; Figure 4 This is a schematic diagram of the second structure of the side axial view of this utility model.

[0028] In the diagram: 1. Base plate; 2. First upright plate; 3. Second upright plate; 4. Top cover plate; 5. Servo motor; 6. Heat dissipation impeller; 7. Eccentric sleeve; 8. Guide plate; 9. Slide rail connecting plate; 10. Slide rail; 11. Slider; 12. Cutter connecting plate; 13. Cutter. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-4 This utility model provides a technical solution: A high-speed straw cutting mechanism includes a support body, a heat-dissipating reciprocating drive, a guide moving part, and a cutting part.

[0031] The supporting main components include a base plate 1, a first upright plate 2, a second upright plate 3, and an upper cover plate 4. The first upright plate 2 and the second upright plate 3 are fixedly installed parallel and symmetrically on both sides of the upper surface of the base plate 1 and are connected to the upper cover plate 4 by bolts, together forming a rigid rectangular frame structure to provide stable support for the entire cutting mechanism.

[0032] A heat-dissipating reciprocating drive component is located on one side of the supporting main body. Specifically, it includes a servo motor 5, a connecting rod, a heat dissipation impeller 6, and an eccentric sleeve 7. The servo motor 5 is fixedly installed on the side of the base plate 1 or the first vertical plate 2 via a motor mount. The output shaft of the servo motor 5 is connected to one end of the connecting rod. The heat dissipation impeller 6 and the eccentric sleeve 7 are sequentially sleeved and fixed on the outside of the connecting rod from the near motor end to the far motor end. The heat dissipation impeller 6 generates airflow as the motor rotates at high speed, thereby achieving active heat dissipation of the drive component. One side of the eccentric sleeve 7 is movably connected to the guide plate 8 via a bearing or pin, converting the rotational motion of the motor into the planar reciprocating motion of the guide plate 8.

[0033] The guide moving component includes a slide rail connecting plate 9, a slide rail 10, and a slider 11. The slide rail connecting plate 9 is fixedly installed on the side of the guide plate 8. The slide rail 10 is fixed to the slide rail connecting plate 9 in the horizontal direction by screws. The slider 11 is matched and installed on the slide rail 10 and can slide back and forth along the slide rail 10. The other side of the slider 11 is fixedly connected to the inner side of the first vertical plate 2 by a bracket, thereby ensuring accurate guidance of the movement direction.

[0034] The cutting component includes a cutter connecting plate 12 and a cutter 13. The cutter connecting plate 12 is fixedly installed on the side of the slide rail connecting plate 9 and moves with it. The cutter 13 is installed on the front end of the cutter connecting plate 12 by bolts. The cutter 13 is preferably a serrated blade component made of high-strength steel to improve cutting efficiency and durability.

[0035] The workflow of this embodiment is as follows: After the servo motor 5 is started, it drives the eccentric sleeve 7 to rotate through the connecting rod, which in turn drives the guide plate 8 to perform planar reciprocating motion. The guide plate 8 drives the slide rail connecting plate 9 and the cutter connecting plate 12 and cutter 13 installed on it to reciprocate at high speed along the slide rail 10, so as to realize the fixed-length high-speed cutting of the continuously conveyed suction tube. During this process, the heat dissipation impeller 6 rotates at high speed with the motor, which strengthens the airflow circulation of the motor and surrounding structures and effectively suppresses the temperature rise.

[0036] It should be noted that cylinder drives can operate effectively 8,000-12,000 times per hour, while servo motor drives can operate effectively 15,000-18,000 times per hour.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed straw cutting mechanism, characterized in that, The device includes a supporting main body, a heat-dissipating reciprocating drive component on one side of the supporting main body, a guide moving component on one side of the heat-dissipating reciprocating drive component, a cutting component on one side of the guide moving component, a servo motor on one side of the supporting main body, a connecting rod at the output end of the servo motor, a heat-dissipating impeller and an eccentric sleeve respectively sleeved on the outer side of the connecting rod, and a guide plate movably connected to one side of the eccentric sleeve.

2. The high-speed straw cutting mechanism according to claim 1, characterized in that, The supporting main body includes a base plate, a first upright plate, a second upright plate, and an upper cover plate. The first upright plate and the second upright plate are arranged parallel and symmetrically on the upper side of the base plate. The upper cover plate is bolted to the upper side of the first upright plate and the second upright plate. The base plate, the first upright plate, the second upright plate, and the upper cover plate are spliced ​​in a rectangular frame structure.

3. The high-speed straw cutting mechanism according to claim 2, characterized in that, The guide moving component includes a slide rail connecting plate, which is disposed on one side of the guide plate. A slide rail is disposed on one side of the slide rail connecting plate, and a slider is disposed on the outer side of the slide rail. One side of the slider is connected to one side of the first upright plate.

4. The high-speed straw cutting mechanism according to claim 3, characterized in that, The cutting component includes a cutter connecting plate, which is disposed on one side of the slide rail connecting plate. A cutter is disposed on one side of the cutter connecting plate, and the cutter is a serrated blade component.

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