Plastic straw automatic cutting equipment convenient to adjust

Abstract

The plastic straw automatic cutting equipment convenient to adjust comprises a supporting cabinet, a cutting knife is arranged below an installation shaft, one side of the installation shaft is connected with a guide seat through a second supporting arm, a supporting plate is arranged below the cutting knife, and a shearing seat corresponding to the cutting knife is arranged at the top of the supporting plate. A connecting shaft coaxial with the mounting shaft is arranged at the bottom of the supporting plate, the lower end of the connecting shaft is rotationally mounted in a strip-shaped seat, the two ends of the strip-shaped seat are connected with U-shaped supports respectively, one side of the connecting shaft is connected with a driving shaft through the tail end of a first supporting arm, the driving shaft is parallel to the mounting shaft, and the top of the driving shaft is movably arranged in a guide seat. During use, when the servo driving motor is controlled to rotate by any angle, the driving motor can simultaneously drive the shearing seat and the cutting knife to rotate together through the matching of the guide seat and the driving shaft, so that the shearing seat and the cutting knife can also rotate by any angle along with the servo driving motor; therefore, the cutting seat and the cutting knife notch can be adjusted at will.

Description

Technical Field

[0001] This utility model relates to the field of straw production technology, specifically to an easily adjustable automatic cutting device for plastic straws. Background Technology

[0002] The angled notch at the end of the straw is designed to make it easier to pierce the packaging. The angle of the straw's notch is usually between 30° and 60°. This angle range is chosen based on practicality and safety considerations. If the angle is too small (such as below 30°), the straw may be too sharp, increasing the risk of injury. If the angle is too large (such as above 60°), it may be difficult to pierce the seal.

[0003] Existing straw cutting equipment provides a fixed bevel angle, making it impossible to adjust the angle of the cut. This is because the opening angle at the top of the cutting mold is fixed and cannot be adjusted. To cut different angles, the cutting mold must be replaced, resulting in a cumbersome process. Therefore, we propose an automatically adjustable plastic straw cutting device. Utility Model Content

[0004] This invention provides an automatic plastic straw cutting device that is easy to adjust, with the advantage that the straw cutting angle can be adjusted arbitrarily, thus solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: An easily adjustable automatic cutting device for plastic straws includes a support cabinet, a U-shaped bracket on the top of the support cabinet, a lifting mechanism inside the top of the U-shaped bracket, a servo drive motor inside the lifting mechanism, the bottom of the servo drive motor being coaxially connected to the mounting shaft, a cutting blade below the mounting shaft, one side of the mounting shaft being connected to a guide seat via a second arm, a support plate below the cutting blade, a shearing seat corresponding to the cutting blade on the top of the support plate, a connecting shaft coaxial with the mounting shaft at the bottom of the support plate, the lower end of the connecting shaft being rotatably installed in a strip seat, both ends of the strip seat being connected to the U-shaped bracket respectively, one side of the connecting shaft being connected to a drive shaft via the end of a first arm, the drive shaft being parallel to the mounting shaft and its top being movably placed in the guide seat.

[0006] Preferably, the lifting mechanism includes a lifting cylinder installed at the top of the U-shaped bracket, the bottom of the lifting cylinder being connected to a U-shaped connecting frame with its opening facing downwards, the lower part of the U-shaped connecting frame being connected to a strip support, a servo drive motor being installed in the middle of the top surface of the strip support, and both ends of the strip support being connected to the U-shaped bracket through a guide mechanism.

[0007] Preferably, the guiding mechanism includes sliders disposed at both ends of the strip support, the sliders being slidably mounted on the guide rail, and the guide rail being mounted on the U-shaped bracket.

[0008] Preferably, a tool holder is provided below the mounting shaft, and the tool holder is detachably connected to the cutting tool.

[0009] Preferably, a support platform is provided on the side of the top of the support cabinet away from the shear seat. The four corners of the support platform are connected to the support cabinet by support legs. A guide pipe perpendicular to the mounting axis is provided on the side of the top of the support platform near the shear seat. The guide pipe is located above the shear seat and there is a certain distance between them. A feeding device is provided at the end of the guide pipe away from the shear seat.

[0010] Preferably, the feeding device includes at least two grooved wheel drive structures. Each grooved wheel drive structure includes two vertically distributed transmission grooved wheels. A support shaft is installed in the middle of each transmission grooved wheel. Both ends of the support shaft are rotatably mounted in a mounting base. The bottom of the mounting base is connected to a support platform. One end of each support shaft is provided with a transmission gear, and the two transmission gears mesh. One end of each grooved wheel drive structure is provided with a pulley, which is mounted on the support shaft and connected to the pulleys by a belt. A drive motor is provided on one side of one of the grooved wheel drive structures and is connected to the support shaft.

[0011] Preferably, a downward-sloping guide trough is provided below the strip seat.

[0012] Preferably, the support cabinet is equipped with a controller, which is electrically connected to the lifting cylinder and the servo drive motor, and is also electrically connected to the operation panel.

[0013] Compared with the prior art, when the servo drive motor is controlled to rotate at any angle, the drive motor can drive the shearing seat and the cutting blade to rotate together through the cooperation of the guide seat and the drive shaft. Therefore, the shearing seat and the cutting blade will also rotate at any angle with the servo drive motor, so the cutting edge of the shearing seat and the cutting blade can be adjusted arbitrarily. That is, only the rotation angle of the servo drive motor needs to be controlled, which is simple to operate and convenient to use. Attached Figure Description

[0014] 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 these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the front structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0017] Figure 3This is a schematic diagram showing the specific structure between the servo drive motor and the shear seat of this utility model.

[0018] Figure 4 Top view of the feeding device of this utility model Figure 1 .

[0019] Figure 5 Top view of the feeding device of this utility model Figure 2 .

[0020] Figure 6 This is a three-dimensional structural diagram of the feeding device of this utility model.

[0021] In the diagram: 1. Support cabinet; 2. Connecting shaft; 3. Support plate; 4. Shearing seat; 5. Strip seat; 6. Cutting blade; 7. Strip support; 8. Servo drive motor; 9. U-shaped connecting frame; 10. Guide rail; 11. Lifting cylinder; 12. U-shaped bracket; 13. Support platform; 14. Guide chute; 15. Blade holder; 16. Drive shaft; 17. Guide tube; 18. Drive motor; 19. Transmission pulley; 20. Support shaft; 21. Mounting seat; 22. Transmission gear; 23. Pulley; 24. First support arm; 25. Guide seat; 26. Second support arm; 27. Mounting shaft; 28. Operation panel. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figures 1 to 6 This utility model provides a technical solution: an easy-to-adjust automatic plastic straw cutting device, including a support cabinet 1, which supports the cutting device. The support cabinet 1 is equipped with a controller and an air source system that provides power to the cylinder. The air source system is connected to the controller, which is a PLC control system.

[0024] The top of the support cabinet 1 is provided with a U-shaped bracket 12, with the opening of the U-shaped bracket 12 facing downward. The top of the U-shaped bracket 12 is provided with a lifting mechanism, which includes a lifting cylinder 11 installed at the top of the U-shaped bracket 12. The bottom of the lifting cylinder 11 is connected to the U-shaped connecting frame 9 with the opening facing downward. The bottom of the U-shaped connecting frame 9 is connected to the strip support 7. In order to support both ends of the strip support 7, the two ends of the strip support 7 are connected to the U-shaped bracket 12 through a guide mechanism. The guide mechanism includes sliders provided at both ends of the strip support 7. The sliders are slidably installed on the guide rail 10. The guide rail 10 is installed on the U-shaped bracket 12. When the lifting cylinder 11 extends and retracts, it can drive the strip support 7 to move up and down along the guide rail 10.

[0025] A servo drive motor 8 is installed inside the lifting mechanism, such as Figure 1 and Figure 2 As shown, the servo drive motor 8 is installed in the middle of the top surface of the strip support 7, so the servo drive motor 8 can move up and down under the drive of the lifting mechanism.

[0026] In practical applications, the controller is electrically connected to the lifting cylinder 11 and the servo drive motor 8. Specifically, the lifting cylinder 11 is connected to the air supply system via an air pipe, and the controller controls the air supply system to provide power for the lifting cylinder 11 to move up and down. It should be noted that the advantage of using the servo drive motor 8 in this application is to facilitate precise control of the rotation angle, because the encoder inside the servo drive motor can monitor the rotation angle in real time and feed it back to the controller. To facilitate adjustment of the rotation angle of the servo drive motor 8, the controller is also electrically connected to the operation panel 28. The operation panel 28 can be set on the U-shaped bracket 12, or it can be set in other convenient operating positions on the cutting equipment. Through the operation panel 28, the reciprocating rotation angle of the servo drive motor 8 can be controlled, for example, controlling the servo drive motor 8 to rotate by 30-60°, which matches the angle of the straw.

[0027] The following describes the specific mounting structure below the servo drive motor 8, such as... Figure 1 and Figure 3 As shown, the bottom of the servo drive motor 8 is coaxially connected to the mounting shaft 27. A cutting blade 6 is provided below the mounting shaft 27. Specifically, a blade holder 15 is provided below the mounting shaft 27. The blade holder 15 and the cutting blade 6 are detachably connected and are fastened together by bolts, which facilitates the disassembly and replacement of the cutting blade 6. One side of the mounting shaft 27 is connected to the guide seat 25 through the second support arm 26. A linear bearing is provided inside the guide seat 25, and the axis of the guide seat 25 is parallel to the axis of the mounting shaft 27.

[0028] A support plate 3 is provided below the cutting blade 6. A shearing seat 4 corresponding to the cutting blade 6 is provided on the top of the support plate 3, that is, the shearing seat 4 is tangent to the cutting blade 6. A connecting shaft 2 coaxial with the mounting shaft 27 is provided at the bottom of the support plate 3. The lower end of the connecting shaft 2 is rotatably installed in the strip seat 5. Both ends of the strip seat 5 are connected to the U-shaped bracket 12 respectively.

[0029] One side of the connecting shaft 2 is connected to the drive shaft 16 through the end of the first support arm 24. The drive shaft 16 is parallel to the mounting shaft 27 and its top is movably placed in the guide seat 25, that is, the drive shaft 16 is placed in the linear bearing to avoid dry friction between the linear bearing and the guide seat 25.

[0030] Based on the above embodiments, the cutting process is as follows: In the initial state, as... Figure 4 As shown, the positions of the shear seat 4 and the cutting blade 6 are parallel to the plane of the U-shaped bracket 12. The pipe to be sheared moves from the middle of the shear seat 4 towards the space between the shear seat 4 and the cutting blade 6. Then, the cutting blade 6 descends and cooperates with the shear seat 4 to cut the pipe into a flat end. Figure 5 As shown, the drive motor 18 then drives the mounting shaft 27 to rotate by an angle A, causing the shearing seat 4 and the cutting blade 6 to rotate by the same angle A. When the cutting blade 6 descends, it cuts the tube at an angle. This process is repeated to cut one end of the straw flat and the other end at an angle. It is important to emphasize that the rotation angle of the shearing seat 4 and the cutting blade 6 can be adjusted arbitrarily. Because the second arm 26 can only extend and retract within the guide seat 25, the servo drive motor 8 and the cutting blade 6 can move up and down along the drive shaft 16. However, when the servo drive motor 8 rotates at a preset angle A, it will drive the connecting shaft 2 to rotate along with the drive shaft 16, causing the shearing seat 4 and the cutting blade 6 to move simultaneously. The advantage of this is that when the servo drive motor 8 is controlled to rotate at any angle, the shearing seat 4 and the cutting blade 6 will also rotate at any angle. Therefore, the cutting angle of the shearing seat 4 and the cutting blade 6 can be adjusted arbitrarily, that is, only the rotation angle of the servo drive motor 8 needs to be controlled, which is very convenient for adjustment.

[0031] Furthermore, a support platform 13 is provided on the top of the support cabinet 1 away from the shear seat 4. The four corners of the support platform 13 are connected to the support cabinet 1 by support legs. A guide tube 17 perpendicular to the mounting shaft 27 is provided on the top of the support platform 13 near the shear seat 4. The guide tube 17 is located above the shear seat 4 and there is a certain distance between them. The support platform 13 is provided to increase the height of the guide tube 17 so that the height of the guide tube 17 matches the shear seat 4. The tube to be sheared is guided into the shear seat 4 from the guide tube 17, which can prevent the tube from bending and deforming.

[0032] A feeding device is provided at the end of the guide tube 17 away from the shear seat 4, such as Figure 6As shown, the feeding device includes at least two grooved wheel drive structures. Each grooved wheel drive structure includes two vertically distributed transmission grooved wheels 19. A support shaft 20 is installed in the middle of each transmission grooved wheel 19. Both ends of the support shaft 20 are rotatably installed in the mounting base 21. The bottom of the mounting base 21 is connected to the support platform 13.

[0033] Each of the two support shafts 20 has a transmission gear 22 at one end. The two transmission gears 22 mesh, so that rotating either support shaft 20 will drive the other support shaft 20 to rotate, allowing the two transmission pulleys 19 to advance the pipe while tightening it. Each pulley transmission structure has a pulley 23 at one end, which is mounted on the support shaft 20 and connected to each other by a belt. A drive motor 18 is located on one side of one of the pulley transmission structures. The drive motor 18 is mounted on the support platform 13 and connected to the support shaft 20. When the drive motor 18 rotates, it will drive all the transmission pulleys 19 to rotate together, allowing multiple transmission pulleys 19 to continuously advance the pipe towards the shear seat 4. The inner surface of the transmission pulleys 19 is provided with an anti-slip rubber layer to prevent slippage.

[0034] Furthermore, such as Figure 1 As shown, a downward-sloping guide trough 14 is also provided below the strip seat 5. In actual use, a container can be placed below the guide trough 14 to pick up the suction tube.

[0035] Based on the above embodiments, further optimization is possible, with the lower ends of the mounting shaft 27 and the drive motor 18 connected by a flange.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An easily adjustable automatic plastic straw cutting device, comprising a support cabinet (1), wherein the top of the support cabinet (1) is provided with a U-shaped bracket (12), characterized in that, The top of the U-shaped bracket (12) is equipped with a lifting mechanism, and the lifting mechanism is equipped with a servo drive motor (8); The bottom of the servo drive motor (8) is coaxially connected to the mounting shaft (27). A cutting blade (6) is provided below the mounting shaft (27). One side of the mounting shaft (27) is connected to the guide seat (25) through the second support arm (26). A support plate (3) is provided below the cutting blade (6). A shearing seat (4) corresponding to the cutting blade (6) is provided on the top of the support plate (3). A connecting shaft (2) coaxial with the mounting shaft (27) is provided at the bottom of the support plate (3). The lower end of the connecting shaft (2) is rotatably installed in the strip seat (5). Both ends of the strip seat (5) are connected to the U-shaped bracket (12). One side of the connecting shaft (2) is connected to the drive shaft (16) through the end of the first support arm (24). The drive shaft (16) is parallel to the mounting shaft (27) and its top is movably placed in the guide seat (25).

2. The easily adjustable automatic plastic straw cutting device as described in claim 1, characterized in that, The lifting mechanism includes a lifting cylinder (11) installed at the top inside the U-shaped bracket (12). The bottom of the lifting cylinder (11) is connected to the U-shaped connecting frame (9) with the opening facing downwards. The bottom of the U-shaped connecting frame (9) is connected to the strip support (7). The servo drive motor (8) is installed in the middle of the top surface of the strip support (7), and the two ends of the strip support (7) are connected to the U-shaped bracket (12) through the guide mechanism.

3. The easily adjustable automatic plastic straw cutting device as described in claim 2, characterized in that, The guiding mechanism includes sliders set at both ends of the strip support (7), the sliders are slidably mounted on the guide rail (10), and the guide rail (10) is mounted on the U-shaped bracket (12).

4. The easily adjustable automatic plastic straw cutting device as described in claim 1, characterized in that, A tool holder (15) is provided below the mounting shaft (27), and the tool holder (15) is detachably connected to the cutting blade (6).

5. The easily adjustable automatic plastic straw cutting device as described in claim 1, characterized in that, A support platform (13) is provided on the top side of the support cabinet (1) away from the shear seat (4), and the four corners of the support platform (13) are connected to the support cabinet (1) by support legs; The top of the support platform (13) near the shear seat (4) is provided with a guide tube (17) perpendicular to the mounting shaft (27). The guide tube (17) is located above the shear seat (4) and there is a certain distance between them; and, A feeding device is provided at the end of the guide tube (17) away from the shear seat (4).

6. The easily adjustable automatic plastic straw cutting device as described in claim 5, characterized in that, The feeding device includes at least two grooved wheel drive structures. Each grooved wheel drive structure includes two vertically distributed transmission grooved wheels (19). A support shaft (20) is installed in the middle of each transmission grooved wheel (19). Both ends of the support shaft (20) are rotatably installed in the mounting base (21). The bottom of the mounting base (21) is connected to the support platform (13). One end of each of the two support shafts (20) is provided with a transmission gear (22), and the two transmission gears (22) mesh. Each grooved wheel drive structure has a pulley (23) at one end, which is mounted on the support shaft (20). The pulleys (23) are connected to each other by a belt. A drive motor (18) is provided on one side of one of the grooved wheel drive structures and is connected to the support shaft (20).

7. The easily adjustable automatic plastic straw cutting device as described in claim 1, characterized in that, The bar seat (5) is provided with a downwardly inclined guide trough (14).

8. The easily adjustable automatic plastic straw cutting device as described in claim 6, characterized in that, The support cabinet (1) is equipped with a controller, which is electrically connected to the lifting cylinder (11) and the servo drive motor (8) respectively. The controller is also electrically connected to the operation panel (28).

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