Firework outer tube cutting device

Abstract

The utility model provides a fireworks outer tube cutting equipment belongs to fireworks outer tube processing technical field, including cutting machine and rotation connection in the side surface of cutting machine round axle, the fixed sleeve of round axle has the sword arm, install a plurality of cutting knives for cutting fireworks outer tube on the sword arm, the one end of sword arm away from cutting knife installs the counter weight, the side surface fixed of cutting machine has the support, the counter weight is pasted in the support top, it also includes: limiting mechanism, the limiting mechanism includes the square sleeve of movable sleeve connection on the pedal, the utility model discloses through setting square sleeve and U -shaped board, square sleeve is covered on the pedal and is fixed through bolt, U -shaped board installs in square sleeve bottom, when cutting knife will fireworks outer tube cut off after U -shaped board bottom ground on when treading pedal, realize the limiting of pedal, the pedal cannot continue to move downward at this moment, prevent the cutting edge of cutting knife and the rotation axis of cutting machine to have the big collision, thereby effectively prevent the cutting edge of cutting knife to have the big damage.

Description

Technical Field

[0001] This utility model relates to the field of fireworks outer tube processing technology, and in particular to a fireworks outer tube cutting device. Background Technology

[0002] After the fireworks tubes are produced, they often need to be cut. A paper tube cutter is used for cutting. The fireworks tubes are placed on the rotating shaft of the cutter. The rotating shaft rotates at high speed driven by a motor. During the high-speed rotation of the fireworks tubes, the cutter moves downward to cut the tubes, thus obtaining the required length of fireworks tubes.

[0003] A search revealed that Chinese Patent CN221583723U discloses a paper tube cutting device, comprising a base, a transmission mechanism, a cutting mechanism, and a paper tube fixing shaft. The transmission mechanism is located on one side of the base; the paper tube fixing shaft is located above the base and is used to mount the paper tube. One end of the paper tube fixing shaft is connected to the transmission mechanism, which drives the paper tube fixing shaft to rotate around its axis. The cutting mechanism includes a cutting arm assembly, a linkage rod, and a foot pedal assembly. The fixed end of the cutting arm assembly is hinged to the base, and the cutting direction of the cutting arm assembly is perpendicular to the axis of the paper tube fixing shaft. One end of the linkage rod is hinged to the cutting arm assembly, and the other end of the linkage rod is hinged to the foot pedal assembly. The paper tube cutting device fixes the paper tube through the paper tube fixing shaft and cuts the paper tube by rotating it under the cutting end of the cutting arm assembly. This improves the safety of the cutting process, produces a clean cut, and has high cutting efficiency, greatly improving the recycling rate of waste paper tubes and saving paper tube costs.

[0004] The aforementioned patent cuts the outer tube of fireworks by directly stepping on the pedal, causing the cutting blade holder to rotate downwards. During the cutting process, the force of stepping on the pedal is entirely applied to the cutting blade. Due to the suspension of the pedal bottom, the cutting blade still tends to rotate downwards after the cutting is completed, resulting in a large collision between the blade and the rotating shaft. This collision will aggravate the damage to the blade. Therefore, this application provides a fireworks outer tube cutting device to meet the requirements. Summary of the Invention

[0005] This utility model provides a fireworks outer tube cutting device to solve the problem that, due to the influence of the bottom of the pedal being suspended, the cutter still tends to rotate downwards after cutting, causing a large collision between the cutter blade and the rotating shaft, which aggravates the damage to the blade.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A fireworks outer tube cutting device includes a cutting machine and a circular shaft rotatably connected to the side of the cutting machine. A cutting arm is fixedly sleeved on the circular shaft, and multiple cutting blades for cutting the fireworks outer tube are installed on the cutting arm. A counterweight is installed at the end of the cutting arm away from the cutting blades. A bracket is fixed to the side of the cutting machine, and the counterweight is attached to the top of the bracket. A pedal is rotatably connected inside the bracket, and the pedal is connected to the cutting arm by a steel wire rope. The device also includes: The limiting mechanism includes a square sleeve that is movably fitted onto the pedal. A bolt is threaded to the bottom of the square sleeve, and the top of the bolt abuts against the bottom of the pedal. An adjustment component is provided at the bottom of the square sleeve, and a U-shaped plate is connected to the bottom of the square sleeve through the adjustment component. During cutting, stepping on the pedal causes the bottom of the U-shaped plate to fit against the ground, thus limiting the downward movement of the cutter.

[0007] Preferably, the adjustment assembly includes two screws fixed to the bottom of the square sleeve, and horizontal portions bent at both ends of the U-shaped plate. The horizontal portions are movably sleeved on the screws, and two nuts are threaded onto the screws, with the two nuts respectively fitting against the top and bottom of the horizontal portions.

[0008] Preferably, the bottom of the U-shaped plate is fixed with a protrusion, which is arc-shaped.

[0009] Preferably, the top of the square sleeve is provided with an anti-slip component, which is used to prevent slipping when stepping on the pedal.

[0010] Preferably, the anti-slip component includes a positioning strip fixed to the top of the pedal, a protrusion fixed to the side of the square sleeve, the protrusion fitting against the side of the positioning strip, and a plurality of anti-slip strips fixed to the top of the square sleeve.

[0011] Preferably, the top of the square sleeve is an upwardly curved surface, and the anti-slip strip is fixed to the curved surface.

[0012] Preferably, both the positioning strip and the anti-slip strip are V-shaped.

[0013] Preferably, the side of the positioning strip away from the square sleeve is an inclined support surface.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects: In the above solution, a square sleeve and a U-shaped plate are set up. The square sleeve is placed on the pedal and fixed with bolts. The U-shaped plate is installed at the bottom of the square sleeve. When the pedal is stepped on, after the cutter cuts the outer tube of the fireworks, the bottom of the U-shaped plate presses against the ground to limit the pedal. At this time, the pedal cannot continue to move downward, preventing the blade of the cutter from colliding with the shaft of the cutting machine, thereby effectively preventing the blade of the cutter from being damaged.

[0015] By setting a screw and nut, when the outer diameter of the cutter becomes smaller after the blade is sharpened, the nut is loosened, and then the U-shaped plate is moved up and the nut is tightened to fix the U-shaped plate, so that the pedal can be stepped on to a greater depth to adapt to the situation where the outer diameter of the cutter becomes smaller.

[0016] By setting up a protrusion that is fixed to the bottom of the U-shaped plate, the protrusion is arc-shaped, which can prevent the sharp edges of the bottom of the U-shaped plate from damaging the ground.

[0017] By setting a positioning strip, the protruding part on the side of the square sleeve abuts against the positioning strip during the initial installation of the square sleeve, thereby positioning the square sleeve. After positioning, the square sleeve is fixed on the pedal with bolts, ensuring that the installation position of the square sleeve is stable and reliable, thus ensuring that the U-shaped plate can stably perform its limiting function.

[0018] By installing anti-slip strips, when the operator steps on the pedal, the sole of their shoe contacts the V-shaped anti-slip strips, preventing the sole of the shoe from slipping when stepping on the pedal.

[0019] By setting a curved surface, when you step on the anti-slip strip, any foreign objects on the sole of your shoe will fall onto the square cover and automatically slide down the curved surface, reducing the hassle of subsequent cleaning. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the U-shaped plate of this utility model; Figure 3 This is a three-dimensional structural diagram of the protruding part of this utility model; Figure 4 This is a three-dimensional structural diagram of the anti-slip strip of this utility model.

[0021] In the diagram: 1. Cutting machine; 2. Blade arm; 3. Cutting blade; 4. Pedal; 5. Limiting mechanism; 6. Square sleeve; 7. Bolt; 8. U-shaped plate; 9. Protrusion; 10. Horizontal part; 11. Screw; 12. Nut; 13. Anti-slip component; 14. Positioning strip; 15. Protrusion; 16. Curved surface; 17. Anti-slip strip. Detailed Implementation

[0022] The following is a detailed description of a fireworks outer tube cutting device provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0023] like Figures 1-4As shown, an embodiment of this utility model provides a fireworks outer tube cutting device, including a cutting machine 1 and a round shaft rotatably connected to the side of the cutting machine 1. A blade arm 2 is fixedly sleeved on the round shaft, and multiple cutting blades 3 for cutting fireworks outer tubes are installed on the blade arm 2. A counterweight is installed at the end of the blade arm 2 away from the cutting blades 3. A bracket is fixed to the side of the cutting machine 1, and the counterweight is attached to the top of the bracket. A pedal 4 is rotatably connected inside the bracket, and the pedal 4 and the blade arm 2 are connected by a steel wire rope. The device also includes: The limiting mechanism 5 includes a square sleeve 6 that is movably sleeved on the pedal 4. The bottom of the square sleeve 6 is threaded with a bolt 7. The top of the bolt 7 abuts against the bottom of the pedal 4. An adjustment component is provided at the bottom of the square sleeve 6. A U-shaped plate 8 is connected to the bottom of the square sleeve 6 through the adjustment component. During cutting, stepping on pedal 4 causes the bottom of the U-shaped plate 8 to contact the ground, limiting the downward movement of the cutter 3. The cutting machine 1 provides basic support for the entire cutting operation. Pedal 4 is linked to the blade arm 2 via a steel wire rope. When the operator steps on pedal 4, it drives the blade arm 2 to rotate the cutter 3 downward, cutting the outer tube of the firework. As the blade arm 2 rotates the cutter 3 downward, it causes the counterweight to rotate upward and separate from the support. After cutting, releasing pedal 4 causes the blade arm 2 to rotate upward under the weight of the counterweight, separating the cutter 3 from the outer tube of the firework. At the same time, the blade arm 2, through the steel wire rope, drives the pedal 4 to rotate downward. Plate 4 rotates upward to achieve reset; in the limiting mechanism 5, the square sleeve 6 is fixed to the pedal 4 by bolts 7, providing an installation carrier for the U-shaped plate 8. The tightening of bolts 7 can prevent the square sleeve 6 from sliding on the pedal 4, ensuring accurate limiting position. When the cutter 3 finishes cutting, the U-shaped plate 8 is in contact with the ground, limiting the pedal 4 from continuing to move downward, avoiding excessive collision between the blade of the cutter 3 and the shaft of the cutting machine 1, thus extending the service life of the cutter 3. The adjustment component can adjust the height of the U-shaped plate 8 according to the wear of the cutter 3, ensuring that the cutting operation always proceeds normally and improving the adaptability of the limiting mechanism 5.

[0024] like Figures 2-4 As shown in this embodiment, the adjustment assembly includes two screws 11 fixed to the bottom of the square sleeve 6. Horizontal portions 10 are bent at both ends of the U-shaped plate 8 and are movably sleeved on the screws 11. Two nuts 12 are threaded onto the screws 11, respectively fitting against the top and bottom of the horizontal portions 10. The screws 11 provide a track for adjusting the height of the U-shaped plate 8. The sleeved fit between the horizontal portions 10 and the screws 11 ensures that the U-shaped plate 8 can only move along the axial direction of the screws 11, preventing deviation during adjustment. The two nuts 12 fix the horizontal portions 10 by clamping them from top to bottom. According to the change in the outer diameter of the cutter 3 after wear, the nuts 12 can be loosened to move the U-shaped plate 8 up and down to a suitable height, and then the nuts 12 can be tightened to complete the fixation. The operation is simple and the fixation is firm.

[0025] like Figure 3As shown in this embodiment, a protrusion 9 is fixed to the bottom of the U-shaped plate 8. The protrusion 9 is arc-shaped. The arc-shaped protrusion 9 replaces the sharp edges of the bottom of the U-shaped plate 8 in contact with the ground, which can prevent the sharp edges of the bottom of the U-shaped plate 8 from damaging the ground and reduce ground damage.

[0026] like Figure 2 and Figure 4 As shown in this embodiment, the top of the square sleeve 6 is provided with an anti-slip component 13. The anti-slip component 13 is used to prevent slipping when stepping on the pedal 4. The anti-slip component 13 can increase the friction between the operator's shoe sole and the top of the square sleeve 6, prevent slipping when stepping on the pedal 4, ensure the safety of the operator, and prevent the cutting action from going out of control due to slipping.

[0027] like Figure 2 and Figure 4 As shown in this embodiment, the anti-slip component 13 includes a positioning strip 14 fixed to the top of the pedal 4, a protrusion 15 fixed to the side of the square sleeve 6, the protrusion 15 fitting against the side of the positioning strip 14, and several anti-slip strips 17 fixed to the top of the square sleeve 6. The fitting and cooperation between the positioning strip 14 and the protrusion 15 provides precise positioning for the installation of the square sleeve 6 on the pedal 4, avoiding the deviation of the U-shaped plate 8 during installation, ensuring that the limiting mechanism 5 can accurately protect the cutter 3, and the anti-slip strips 17 contact the sole of the shoe to increase friction and prevent slipping when stepping.

[0028] like Figure 2 and Figure 4 As shown in this embodiment, the top of the square sleeve 6 is an upwardly curved surface 16, and the anti-slip strip 17 is fixed on the curved surface 16. The arc design of the curved surface 16 can guide foreign objects on the sole of the shoe to slide to both sides, avoiding the accumulation of foreign objects on the top of the square sleeve 6, which would affect the anti-slip effect or increase the cleaning burden. The anti-slip strip 17 is fixed on the curved surface 16, and the top of the anti-slip strip 17 is flat, which can still stably fit the sole of the shoe, ensuring that the anti-slip strip 17 can fully contact the sole of the shoe and maximize the anti-slip effect.

[0029] like Figure 2 and Figure 4 As shown in this embodiment, both the positioning strip 14 and the anti-slip strip 17 are V-shaped. Compared with the straight strip, the V-shaped positioning strip 14 has two inclined surfaces that can limit the protrusion 15 from two directions, making the positioning more accurate and preventing the square sleeve 6 from slightly shifting during installation or use. The structure of the V-shaped anti-slip strip 17 can further enhance the friction. In addition, the strength of the V-shaped structure is higher than that of the straight structure, which can reduce the deformation of the positioning strip 14 and the anti-slip strip 17 due to long-term stress or collision, and extend their service life.

[0030] like Figure 2As shown in this embodiment, the side of the positioning strip 14 away from the square sleeve 6 is an inclined support surface. The inclined support surface can improve the structural strength of the positioning strip 14 itself and prevent the positioning strip 14 from deforming when the protrusion 15 on the square sleeve 6 abuts against the positioning strip 14.

[0031] Working principle: The square sleeve 6 is placed on the pedal 4, so that the protrusion 15 on the side of the square sleeve 6 fits against the side of the positioning strip 14 on the top of the pedal 4. The square sleeve 6 is positioned by the cooperation between the positioning strip 14 and the protrusion 15, so as to prevent the square sleeve 6 from being misaligned during installation. After positioning, the bolt 7 at the bottom of the square sleeve 6 is tightened so that the top of the bolt 7 presses against the bottom of the pedal 4, thus fixing the square sleeve 6 on the pedal 4. When cutting fireworks tubes, the operator steps on the pedal 4, and the anti-slip strip 17 contacts the sole of the shoe. The V-shaped anti-slip strip 17 increases the friction and effectively prevents the sole of the shoe from slipping when stepping. If there are foreign objects on the sole of the shoe, they will fall on the curved surface 16. The arc design of the curved surface 16 can guide the foreign objects to slide down automatically, reducing the trouble of subsequent cleaning. After the pedal 4 is pressed, the steel wire rope drives the blade arm 2 to rotate downward around the circular axis, thereby driving the cutter 3 to rotate downward to cut the fireworks tube on the side shaft of the cutting machine 1. When the cutter 3 finishes cutting, the protrusion 9 at the bottom of the U-shaped plate 8 of the square sleeve 6 is in contact with the ground. The U-shaped plate 8 forms a limit on the pedal 4, preventing the pedal 4 from moving down further and preventing the blade of the cutter 3 from colliding with the shaft of the cutting machine 1. This effectively prevents the blade of the cutter 3 from being damaged. The arc protrusion 9 at the bottom of the U-shaped plate 8 can prevent the bottom edge of the U-shaped plate 8 from scratching the ground. When the blade of the cutter 3 wears down after long-term use, and its outer diameter becomes smaller after sharpening, the height of the U-shaped plate 8 needs to be adjusted to meet the cutting requirements. At this time, loosen the two nuts 12 on the screw 11 in the adjustment assembly, and move the U-shaped plate 8 upward to a suitable height to ensure that the cutter 3 can completely cut the outer tube of the fireworks. Then tighten the nuts 12 at the top and bottom of the horizontal part 10. By clamping and fixing the two nuts 12, the U-shaped plate 8 is stabilized at the new height. By adjusting the U-shaped plate 8, the pedal 4 can be stepped to a greater depth to adapt to the situation of the smaller outer diameter of the cutter 3 and ensure that the cutting operation can proceed normally.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fireworks outer tube cutting device, comprising a cutting machine (1) and a round shaft rotatably connected to the side of the cutting machine (1), a blade arm (2) fixedly sleeved on the round shaft, a plurality of cutting blades (3) for cutting fireworks outer tubes mounted on the blade arm (2), a counterweight mounted on the end of the blade arm (2) away from the cutting blades (3), a bracket fixed to the side of the cutting machine (1), the counterweight attached to the top of the bracket, a pedal (4) rotatably connected inside the bracket, the pedal (4) and the blade arm (2) being connected by a steel wire rope, characterized in that, Also includes: The limiting mechanism (5) includes a square sleeve (6) that is movably sleeved on the pedal (4). The bottom of the square sleeve (6) is threaded with a bolt (7). The top of the bolt (7) abuts against the bottom of the pedal (4). An adjustment component is provided at the bottom of the square sleeve (6). A U-shaped plate (8) is connected to the bottom of the square sleeve (6) through the adjustment component. During cutting, stepping on the pedal (4) causes the bottom of the U-shaped plate (8) to fit against the ground, thus limiting the downward movement of the cutter (3).

2. The fireworks outer tube cutting equipment according to claim 1, characterized in that, The adjustment assembly includes two screws (11) fixed to the bottom of the square sleeve (6), and horizontal parts (10) bent at both ends of the U-shaped plate (8). The horizontal parts (10) are movably sleeved on the screws (11), and two nuts (12) are threadedly connected to the screws (11). The two nuts (12) are respectively attached to the top and bottom of the horizontal parts (10).

3. The fireworks outer tube cutting equipment according to claim 1, characterized in that, The bottom of the U-shaped plate (8) is fixed with a protrusion (9), which is arc-shaped.

4. The fireworks outer tube cutting equipment according to claim 1, characterized in that, The top of the square sleeve (6) is provided with an anti-slip component (13), which is used to prevent slipping when stepping on the pedal (4).

5. The fireworks outer tube cutting equipment according to claim 4, characterized in that, The anti-slip component (13) includes a positioning strip (14) fixed to the top of the pedal (4), a protrusion (15) fixed to the side of the square sleeve (6), the protrusion (15) fitting against the side of the positioning strip (14), and several anti-slip strips (17) fixed to the top of the square sleeve (6).

6. The fireworks outer tube cutting equipment according to claim 5, characterized in that, The top of the square sleeve (6) is an upwardly curved surface (16), and the anti-slip strip (17) is fixed on the curved surface (16).

7. The fireworks outer tube cutting equipment according to claim 5, characterized in that, Both the positioning strip (14) and the anti-slip strip (17) are V-shaped.

8. The fireworks outer tube cutting equipment according to claim 5, characterized in that, The side of the positioning strip (14) away from the square sleeve (6) is an inclined support surface.

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