Hose cutting device and its control method

Abstract

This invention discloses a hose cutting device and its control method. The hose cutting device includes a main body, a first driver, a rotating seat, a blade holder, and an auxiliary seat. The rotating seat is rotatably mounted on the main body. The first driver is mounted on the main body and drivenly connected to the rotating seat. The blade holder is rotatably mounted on the rotating seat, and the rotation axes of the two are parallel. A blade assembly is provided on the blade holder. The auxiliary seat is rotatably mounted on the rotating seat and is provided with a pusher. The rotating seat can drive the auxiliary seat and the blade holder to rotate together. The rotating seat has a first rotational speed and a second rotational speed lower than the first rotational speed. When the rotating seat switches from the first rotational speed to the second rotational speed, the auxiliary seat can rotate relative to the rotating seat and push the blade holder relative to the rotating seat through the pusher, so that the blade assembly moves centripetally. When the rotating seat switches from the second rotational speed to the first rotational speed, the blade holder can return to its original position under the action of centrifugal force. This invention has a short cutting cycle and high efficiency, which is beneficial for meeting the needs of high-efficiency and continuous tube manufacturing.

Description

Technical Field

[0001] This invention relates to the field of hose production equipment technology, and in particular to a hose cutting device and its control method. Background Technology

[0002] Tube packaging is a common form of packaging in the product packaging industry, such as toothpaste tubes, ointment tubes, and cosmetic lotion tubes. The production of these tubes typically involves welding sheet materials into continuous tubes using a tube welding machine, followed by cutting to obtain tubular blanks of the required length. The cutting device used in tube production usually includes components such as a driver, a rotating base, a blade holder, and a cutter. The cutter is fixedly mounted on the blade holder, which is movably connected to the rotating base. The driver drives the rotating base to rotate, thereby causing the blade holder and cutter to move in a circular motion. By controlling the feed of the blade holder, the cutter performs a circumferential cut on the continuous tube material to cut a tube segment of the predetermined length. In existing cutting devices, the feed control of the blade holder often employs the following method: an elastic element is installed between the blade holder and the rotating base. This element constantly applies a force to the blade holder, causing it to tend to retract. During cutting, the rotating base is accelerated from rest to high speed, using the resulting centrifugal force to overcome the elastic force, driving the blade holder to deflect and move the cutter to achieve feed cutting. During retraction, the rotating base is gradually decelerated from high speed to rest, the centrifugal force disappears, and the blade holder returns to its original position under the action of the elastic element. Through the periodic alternation of "rest-high speed-rest," intermittent cutting of continuous tubes can be achieved. Although the above control method has a simple structure, it requires a rotating base start-stop cycle for each cutting operation, resulting in a long cutting cycle and low efficiency, making it difficult to meet the demands of high-efficiency, continuous tube manufacturing. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a hose cutting device, which can realize the cutting and retraction of the blade assembly by utilizing the relative rotation of the auxiliary seat due to inertia when the rotating seat slows down and the centrifugal force on the blade holder when the rotating seat rotates at high speed. The rotating seat can maintain rotation during use without going through a start-stop cycle, resulting in a shorter cutting cycle and higher efficiency, which is beneficial to meeting the needs of high-efficiency and continuous tube manufacturing.

[0004] The present invention also proposes a control method for the hose cutting device.

[0005] According to a first aspect of the present invention, a hose cutting device includes a main body, a first driver, a rotating seat, a blade holder, and an auxiliary seat. The rotating seat is annular and rotatably disposed on the main body. The first driver is disposed on the main body and drivenly connected to the rotating seat to drive the rotating seat to rotate. The blade holder is rotatably disposed on the rotating seat, and the rotation axis of the blade holder is parallel to the rotation axis of the rotating seat. A blade assembly is disposed on the blade holder. The auxiliary seat is rotatably disposed on the rotating seat, and a pusher is disposed on the auxiliary seat corresponding to the blade holder. The rotating seat can drive the auxiliary seat and the blade holder to rotate together. The rotating seat has a first rotation speed and a second rotation speed, wherein the first rotation speed is greater than the second rotation speed. When the rotating seat switches from the first rotation speed to the second rotation speed, the auxiliary seat can rotate relative to the rotating seat and push the blade holder relative to the rotating seat through the pusher to deflect it, so that the blade assembly moves closer to the rotation axis of the rotating seat. When the rotating seat switches from the second rotation speed to the first rotation speed, the blade holder can reset under the action of centrifugal force and move the blade assembly away from the rotation axis of the rotating seat.

[0006] The hose cutting device according to the embodiments of the present invention has at least the following beneficial effects: In use, the hose body is conveyed through the center of the rotating seat. The first driver drives the rotating seat to rotate at a first speed. The rotating seat drives the auxiliary seat to rotate synchronously, and the blade holder also rotates with the rotating seat. However, because its rotation axis deviates from the rotation axis of the rotating seat, the blade holder will abut against the pusher under the action of centrifugal force. When cutting is required, the first driver drives the rotating seat to switch from the first speed to a second speed, i.e., the rotating seat decelerates. Since the auxiliary seat is not fixedly connected to the rotating seat but can rotate relative to the rotating seat, therefore… When the rotary seat decelerates, the auxiliary seat rotates relative to the rotary seat due to inertia, causing the pusher to rotate. This pusher deflects the pusher holder relative to the rotary seat, moving the blade assembly closer to the rotary seat's rotation axis to contact the tube and perform circumferential cutting. When retraction is required, the first driver switches the rotary seat from the second speed to the first speed, accelerating the rotary seat. The rotary seat then drives the auxiliary seat to rotate again, resetting it relative to its original position. Simultaneously, under centrifugal force, the pusher holder also resets, and the blade assembly moves away from the rotary seat's rotation axis to leave the tube. This invention utilizes the relative rotation of the auxiliary seat due to inertia during rotary seat deceleration and the centrifugal force on the pusher holder during high-speed rotary seat rotation to achieve blade assembly feed and retraction. The rotary seat can maintain rotation during use without starting and stopping cycles, resulting in a shorter cutting cycle and higher efficiency, which is beneficial for meeting the needs of high-efficiency, continuous tube manufacturing.

[0007] According to some embodiments of the present invention, one of the rotating seat and the auxiliary seat is provided with a first linkage member, and the other is provided with a corresponding second linkage member. Two second linkage members are provided and spaced apart. The first linkage member is partially located between the two second linkage members and can move between the two second linkage members and can move to contact the second linkage members. The rotating seat can drive the auxiliary seat to rotate through the contact between the first linkage member and the second linkage member.

[0008] According to some embodiments of the present invention, the second linkage member is provided with a buffer portion on the side facing the first linkage member, and the second linkage member can contact the first linkage member through the buffer portion.

[0009] According to some embodiments of the present invention, the pusher is rotatably connected to the auxiliary seat, and the tool holder is detachably provided with a contact block for contacting the pusher.

[0010] According to some embodiments of the present invention, the tool holder is provided with a counterweight.

[0011] According to some embodiments of the present invention, one of the tool holder and the rotary seat is provided with a rotation limiting member, and the other is provided with a corresponding rotation limiting groove. The rotation limiting member is disposed in the rotation limiting groove and can move along the rotation limiting groove to limit the range of deflectable angles of the tool holder relative to the rotary seat.

[0012] According to some embodiments of the present invention, the hose cutting device further includes a second driver, which is motive-connected to the main body seat and capable of driving the main body seat to move with the hose body.

[0013] According to some embodiments of the present invention, the tool holder is provided with a mounting groove, the blade assembly is detachably disposed on the tool holder and partially located in the mounting groove, and a limiting member is movably connected to the tool holder. The limiting member can move or rotate relative to the tool holder and can move to cooperate with the blade assembly in the mounting groove to fix the blade assembly in the mounting groove.

[0014] According to some embodiments of the present invention, a sleeve assembly is detachably provided on the main body seat, the sleeve assembly passes through the middle of the rotating seat and is provided with a conveying channel for the tube body to pass through, and the sleeve assembly has a limiting sleeve that contacts the outer wall of the tube body.

[0015] According to a second aspect of the present invention, the control method is applied to a hose cutting device according to the first aspect of the present invention. The control method includes: when cutting is required, the first driver drives the rotating seat to switch from the first rotation speed to the second rotation speed; when cutting is required, the first driver drives the rotating seat to switch from the second rotation speed to the first rotation speed.

[0016] According to the control method described in the embodiments of the present invention, it has at least the following beneficial effects: by adopting the above control method to realize the cutting and retraction of the blade assembly, the rotary seat can maintain rotation during use without going through a start-stop cycle, the cutting cycle is shorter and the efficiency is higher, which is conducive to meeting the needs of high-efficiency and continuous tube manufacturing.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial structural schematic diagram of the hose cutting device according to an embodiment of the present invention; Figure 2 for Figure 1 A partial structural schematic diagram of the flexible hose cutting device from another perspective; Figure 3 for Figure 2 A partial structural cross-sectional diagram of the flexible hose cutting device; Figure 4 for Figure 2 A front view schematic diagram of part of the structure of the flexible hose cutting device; Figure 5 for Figure 4 A front view schematic diagram of a portion of the structure of the flexible hose cutting device in another state; Figure 6 for Figure 2 A partially exploded schematic diagram of the flexible hose cutting device; Figure 7 for Figure 2 A partial structural cross-sectional diagram of the tool holder and blade assembly; Figure 8 for Figure 7 A schematic diagram of a partial cross-section of the tool holder and blade assembly in a disassembled state; Figure 9 for Figure 2 Exploded view of the blade assembly.

[0019] Figure label: tube body 1; Main body 100, conveying channel 101, sleeve assembly 110, limit sleeve 111; First driver 200; Rotary seat 300, first linkage component 310, rotation limit component 320; Tool holder 400, rotation limiting groove 401, mounting groove 402, contact block 410, counterweight 420, limiting component 430, limiting part 431, elastic component 440; Auxiliary seat 500, pusher component 510, second linkage component 520, buffer part 521; Blade assembly 600, limiting notch 601, blade 610, base plate 620, face plate 630; Second drive 700, rack 800. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] In the description of this invention, if words such as several, greater than, less than, exceeding, above, below, or within appear, then several means one or more, multiple means two or more, greater than, less than, exceeding, etc. are understood to exclude the number itself, and above, below, or within are understood to include the number itself.

[0023] If the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A hose cutting device includes a main body 100, a first driver 200, a rotating seat 300, a blade holder 400, and an auxiliary seat 500. The rotating seat 300 is annular and rotatably mounted on the main body 100. The first driver 200 is mounted on the main body 100 and drivenly connected to the rotating seat 300 to drive the rotating seat 300 to rotate. The blade holder 400 is rotatably mounted on the rotating seat 300, and its rotation axis is parallel to the rotation axis of the rotating seat 300. A blade assembly 600 is mounted on the blade holder 400. The auxiliary seat 500 is rotatably mounted on the rotating seat 300, and a pusher is provided on the auxiliary seat 500 corresponding to the blade holder 400. 510, the rotating seat 300 can drive the auxiliary seat 500 and the tool holder 400 to rotate together. The rotating seat 300 has a first speed and a second speed, the first speed being greater than the second speed. When the rotating seat 300 switches from the first speed to the second speed, the auxiliary seat 500 can rotate relative to the rotating seat 300 and push the tool holder 400 relative to the rotating seat 300 through the pusher 510, so that the blade assembly 600 moves closer to the rotation axis of the rotating seat 300. When the rotating seat 300 switches from the second speed to the first speed, the tool holder 400 can reset under the action of centrifugal force and move the blade assembly 600 away from the rotation axis of the rotating seat 300.

[0026] Understandably, such as Figures 2 to 6 As shown, the rotary seat 300 and the auxiliary seat 500 are both annular in the front-to-back direction. The rotary seat 300 is rotatably mounted on the main seat 100, and the auxiliary seat 500 is rotatably mounted on the outer periphery of the rotary seat 300. The rotation axis of the auxiliary seat 500 relative to the rotary seat 300 is collinear with the rotation axis of the rotary seat 300 itself. The tool holder 400 is rotatably mounted on the rotary seat 300. The rotation axis of the tool holder 400 relative to the rotary seat 300 is parallel to the rotation axis of the rotary seat 300 itself, forming an eccentric design.

[0027] Reference Figure 1 , Figure 2 and Figure 3 In use, the tube 1 conveys and passes through the center of the rotating seat 300, and the first driver 200 drives the rotating seat 300 to rotate at a first speed. Figure 4 The rotating seat 300 rotates counterclockwise, causing the auxiliary seat 500 to rotate synchronously. The tool holder 400 also rotates with the rotating seat 300, but because its rotation axis deviates from the rotation axis of the rotating seat 300, the tool holder 400 will abut against the pusher 510 under the action of centrifugal force; combined Figure 4 and Figure 5When cutting is required, the first driver 200 drives the rotary seat 300 to switch from a first speed to a second speed, i.e., the rotary seat 300 decelerates. Since the auxiliary seat 500 is not fixedly connected to the rotary seat 300 but can rotate relative to the rotary seat 300, when the rotary seat 300 decelerates, the auxiliary seat 500 will rotate relative to the rotary seat 300 due to inertia, causing the pusher 510 to generate rotational displacement. This causes the pusher 510 to deflect relative to the rotary seat 300 against the pusher holder 400, causing the blade assembly 600 to move closer to the rotation axis of the rotary seat 300 to contact the tube body 1 and perform circumferential cutting. Figure 4 and Figure 5 When retraction is required, the first driver 200 drives the rotary seat 300 to switch from the second speed to the first speed, i.e., the rotary seat 300 accelerates, and the rotary seat 300 drives the auxiliary seat 500 to rotate again. The auxiliary seat 500 relatively resets, and at the same time, under the action of centrifugal force, the tool holder 400, which is against the pusher 510, also resets. The blade assembly 600 moves away from the rotation axis of the rotary seat 300 to leave the tube body 1. This invention can realize the cutting and retraction of the blade assembly 600 by utilizing the relative rotation of the auxiliary seat 500 due to inertia when the rotary seat 300 decelerates and the centrifugal force on the tool holder 400 when the rotary seat 300 rotates at high speed. The rotary seat 300 can maintain rotation during use without going through a start-stop cycle, resulting in a shorter cutting cycle and higher efficiency, which is beneficial to meeting the needs of high-efficiency and continuous tube manufacturing.

[0028] In practical applications, the specific structures of the rotary seat 300, tool holder 400, blade assembly 600, and auxiliary seat 500 can be set according to actual usage needs, and will not be described in detail here. They will be explained in detail below.

[0029] In some embodiments, one of the rotating seat 300 and the auxiliary seat 500 is provided with a first linkage member 310, and the other is provided with a corresponding second linkage member 520. There are two second linkage members 520, which are distributed at intervals. The first linkage member 310 is partially located between the two second linkage members 520, and can move between the two second linkage members 520 and can move to contact the second linkage members 520. The rotating seat 300 can drive the auxiliary seat 500 to rotate through the contact between the first linkage member 310 and the second linkage member 520.

[0030] Understandably, such as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the first linkage 310 is fixedly mounted on the rotating base 300, and the second linkage 520 is fixedly mounted on the auxiliary base 500. The two second linkages 520 are spaced apart, and part of the first linkage 310 is located between the two second linkages 520 and can move between them. During startup, the rotating base 300 rotates counterclockwise, causing the first linkage 310 to rotate. (Refer to...) Figure 4 The first linkage 310 rotates to contact the second linkage 520 shown above, allowing the rotating seat 300 to drive the auxiliary seat 500 to rotate together through the contact between the first linkage 310 and the second linkage 520. The rotating seat 300 and the auxiliary seat 500 rotate together at a first rotational speed. When cutting is required, the rotating seat 300 decelerates, and the auxiliary seat 500 rotates relative to the rotating seat 300 under the action of inertia. (Refer to...) Figure 5 The first linkage 310 separates from the second linkage 520 on the upper side of the diagram and contacts the second linkage 520 on the lower side of the diagram. Simultaneously, the pusher 510 deflects relative to the rotary seat 300 against the pusher holder 400. When tool retraction is required, the rotary seat 300 accelerates to the first rotational speed, as shown in the reference diagram. Figure 4 The first linkage 310 re-engages with the second linkage 520 on the upper side of the diagram, and the auxiliary seat 500 and the tool holder 400 are both reset relative to the rotary seat 300. This structure allows the rotary seat 300 to drive the auxiliary seat 500 to rotate at a first rotational speed. Furthermore, when the rotary seat 300 decelerates and switches to a second rotational speed, the auxiliary seat 500 can deflect relative to the rotary seat 300 and limit the deflection angle, thereby better controlling the yaw angle of the tool holder 400 and controlling the stroke of the tool feed and retraction.

[0031] In practical applications, the first linkage 310 can also be an auxiliary seat 500, and the second linkage 520 can be set on the rotary seat 300. In addition, an arc-shaped groove can be set to cooperate with the first linkage 310. For example, the arc-shaped groove can be set on the auxiliary seat 500, and part of the first linkage 310 on the rotary seat 300 can extend into the arc-shaped groove and move along the arc-shaped groove. The specific settings can be made according to the actual needs of use.

[0032] In some embodiments, the second linkage 520 has a buffer portion 521 on the side facing the first linkage 310, allowing the second linkage 520 to contact the first linkage 310 through the buffer portion 521. It is understood that, as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the buffer part 521 is disposed on the side of the second linkage member 520 facing the first linkage member 310. In use, the first linkage member 310 contacts the second linkage member 520 through the buffer part 521, thereby driving the auxiliary seat 500 to rotate or limiting its rotation range relative to the rotating seat 300. The buffer part can effectively reduce the rigid collision between the second linkage member 520 and the first linkage member 310, improve service life and reduce noise. In practical applications, the specific structure and material of the buffer part 521 can be set according to the actual use requirements.

[0033] In some embodiments, the pusher member 510 is rotatably connected to the auxiliary seat 500, and the tool holder 400 is detachably provided with a contact block 410 for contacting the pusher member 510. It is understood that, as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the pusher component 510 is rotatably connected to the auxiliary base 500, and a contact block 410 is detachably mounted on the side of the tool holder 400 facing the pusher component 510. During use, the pusher component 510 contacts the contact block 410. This design allows for rolling contact between the tool holder 400 and the pusher component 510, reducing friction and noise. Furthermore, the contact block 410 can be replaced with different materials or replaced entirely as needed, thus extending its service life. In practical applications, the specific structure of the pusher component 510 and the contact block 410 can be customized according to actual usage requirements.

[0034] In some embodiments, a counterweight 420 is provided on the tool holder 400. It is understood that, as Figures 2 to 6 As shown, a counterweight 420 is provided on the side of the tool holder 400 away from the blade assembly 600. By setting the counterweight 420, the centrifugal force on the tool holder 400 when the rotating seat 300 rotates can be adjusted, which helps to ensure that the pusher 510 can resist the sway of the tool holder 400 relative to the rotating seat 300, thus improving the reliability of use. In actual applications, the specific structure and weight of the counterweight 420 can be set according to the actual usage requirements.

[0035] In some embodiments, one of the tool holder 400 and the rotary seat 300 is provided with a rotation limiting member 320, and the other is provided with a corresponding rotation limiting groove 401. The rotation limiting member 320 is disposed in the rotation limiting groove 401 and can move along the rotation limiting groove 401 to limit the range of deflectable angles of the tool holder 400 relative to the rotary seat 300.

[0036] Understandably, such as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the rotation limiting member 320 is fixedly mounted on the rotary seat 300, and the rotation limiting groove 401 is correspondingly mounted on the tool holder 400. The rotation limiting member 320 is located in the rotation limiting groove 401 and can move along the groove 401, thereby limiting the range of deflection angles of the tool holder 400 relative to the rotary seat 300 and improving reliability. In practical applications, the rotation limiting member 320 can also be mounted on the tool holder 400, in which case the rotation limiting groove 401 is correspondingly mounted on the rotary seat 300. The specific configuration can be adjusted according to actual usage requirements.

[0037] In some embodiments, the hose cutting device further includes a second driver 700, which is motive-connected to the main body 100 and can drive the main body 100 to move with the hose body 1.

[0038] Understandably, such as Figure 1 As shown, the hose cutting device also includes a frame 800, a second driver 700 fixedly mounted on the frame 800, and a main body 100 slidably connected to the frame 800 and movable in the front-to-back direction. In use, the hose 1 is conveyed from back to front and passes through the rotating seat 300. The second driver 700 can guide the main body 100 to move synchronously with the hose 1, keeping the hose 1 stationary relative to the main body 100, facilitating cutting of the hose 1 without interrupting the conveying process, thus improving production efficiency. After one hose segment is cut, the second driver 700 can drive the main body 100 to reset and move to a preset initial position for the next hose segment cut. In practical applications, the specific structures of the second driver 700, frame 800, etc., can be set according to actual usage requirements.

[0039] In some embodiments, the tool holder 400 is provided with a mounting groove 402, the blade assembly 600 is detachably disposed on the tool holder 400 and partially located in the mounting groove 402, and a limiting member 430 is movably connected to the tool holder 400. The limiting member 430 can move or rotate relative to the tool holder 400 and can move to cooperate with the blade assembly 600 in the mounting groove 402 to fix the blade assembly 600 in the mounting groove 402.

[0040] Understandably, such as Figure 6 , Figure 7 and Figure 8As shown, during installation, the blade assembly 600 is partially placed in the mounting slot 402, which restricts the installation position of the blade assembly 600. Then, the limiting member 430 is moved or rotated to engage with the blade assembly 600 in the mounting slot 402, preventing it from detaching from the mounting slot 402 and thus fixing the blade assembly 600 in the mounting slot 402, thereby achieving the positioning and installation of the blade assembly 600. When disassembling or replacing the blade assembly 600, the limiting member 430 can be moved or rotated to disengage from the blade assembly 600 in the mounting slot 402, thereby allowing the blade assembly 600 to be detached from the mounting slot 402 and removed, achieving quick installation and removal of the blade assembly 600 for easy use.

[0041] Specifically, refer to Figure 6 , Figure 7 and Figure 8 The front side of the mounting slot 402 is open to allow the blade assembly 600 to be inserted. The blade assembly 600 has a limiting notch 601. A limiting member 430 is slidably connected to the tool holder 400 and has a limiting part 431. The limiting member 430 can be moved so that the limiting part 431 engages with the limiting notch 601. In use, the blade assembly 600 can be directly inserted into the mounting slot 402 in the front-to-back direction for easy installation and removal. After the blade assembly 600 is placed in the mounting slot 402, the limiting member 430 can be moved so that the limiting part 431 engages with the limiting notch 601, thereby preventing the blade assembly 600 from detaching from the mounting slot 402 and achieving its installation and fixation. The structure is simple and easy to use.

[0042] Furthermore, referring to Figure 6 , Figure 7 and Figure 8 The limiting notch 601 and the limiting part 431 are engaged by a bevel, and the side of the blade assembly 600 away from the limiting notch 601 is engaged with the groove wall of the mounting groove 402 by a bevel, so that the blade assembly 600 can be pressed onto the tool holder 400. The wedge structure formed by the bevel engagement on both sides uses the movement of the limiting member 430 to generate pressure that presses the blade assembly 600 onto the tool holder 400, thereby facilitating the fixation of the blade assembly 600 to the tool holder 400 and improving the stability of the connection.

[0043] Furthermore, referring to Figure 7 and Figure 8The tool holder 400 is provided with an elastic element 440, which acts on the limiting element 430 and causes the limiting part 431 to tend to move and engage with the limiting notch 601. Under this tendency, the limiting part 431 can be kept engaged with the limiting notch 601, preventing loosening and improving the reliability of the connection. In practical applications, in addition to the elastic element 440, the limiting element 430 can also be driven to move by a screw structure. For example, the limiting element 430 can be designed as a screw nut. By rotating the screw, the limiting element 430 can be driven to move left and right using the screw transmission principle, so as to realize the engagement and separation of the limiting part 431 and the limiting notch 601. Of course, the limiting element 430 can also be rotatably connected to the tool holder 400. By rotating the limiting element 430, it can be pressed against the blade assembly 600, thereby fixing it in the mounting groove 402. Alternatively, the limiting element 430 can move left and right through the blade assembly 600, thereby preventing it from leaving the mounting groove 402. The mounting groove 402 can also be a dovetail groove structure, which can be set according to the actual needs of use.

[0044] In some embodiments, the blade assembly 600 includes a blade 610, a base plate 620, and a face plate 630. The blade 610 is disposed between the base plate 620 and the face plate 630. The base plate 620 and the face plate 630 are detachably connected and clamp the blade 610. The blade 610 has a rectangular structure and four cutting edges. It is understood that, as Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a limiting notch 601 is provided in the base plate 620, and the blade 610 is sandwiched between the base plate 620 and the panel 630. The base plate 620 and the panel 630 are detachably connected to form a blade assembly 600. The blade 610 has a rectangular structure and four cutting edges. Both the base plate 620 and the panel 630 have clearances to expose one cutting edge of the blade 610. When cutting hoses, this exposed cutting edge is used for cutting. After prolonged use, if the cutting edge becomes dull, the base plate 620 and the panel 630 can be disassembled, and the exposed cutting edge of the blade 610 can be replaced to allow the blade assembly 600 to continue to be used and increase its service life. In practical applications, the specific structure of the blade 610, the base plate 620, and the panel 630 can be set according to actual usage needs.

[0045] In some embodiments, a sleeve assembly 110 is detachably provided on the main body 100. The sleeve assembly 110 passes through the middle of the rotating seat 300 and is provided with a conveying channel 101 for the tube body 1 to pass through. The sleeve assembly 110 has a limiting sleeve 111 that contacts the outer wall of the tube body 1.

[0046] Understandably, such as Figures 1 to 6As shown, the sleeve assembly 110 passes through the middle of the rotating seat 300 and has a conveying channel 101 for the tube body 1 to pass through. The front end of the sleeve assembly 110 is provided with a limiting sleeve 111. When the tube body 1 is conveyed through the conveying channel 101, the limiting sleeve 111 can be used to limit the tube body 1 by contacting the outer wall of the tube body 1, which can better stabilize the tube body 1 and facilitate the circumferential cutting of it by the blade assembly 600. Depending on the diameter of different tube bodies 1, different sleeve assemblies 110 or limiting sleeves 111 can be disassembled and replaced accordingly to improve adaptability. In actual application, the specific structure of the sleeve assembly 110 and the limiting sleeve 111 can be set according to the actual use requirements.

[0047] According to a second aspect of the present invention, a control method is applied to a hose cutting device according to the first aspect of the present invention. The control method includes: when cutting is required, a first driver 200 drives a rotating seat 300 to switch from a first rotational speed to a second rotational speed; when cutting is required, the first driver 200 drives a rotating seat 300 to switch from a second rotational speed to a first rotational speed.

[0048] Understandably, by employing the aforementioned control method to achieve the feed and retraction of the blade assembly 600, the rotary seat 300 can maintain rotation during use without undergoing start-stop cycles. This results in a shorter cutting cycle and higher efficiency, which is beneficial for meeting the demands of high-efficiency, continuous tube manufacturing. In practical applications, the specific values ​​of the first and second rotational speeds, as well as the specific durations for the rotary seat 300 to operate at the first and second rotational speeds, can be set according to actual usage requirements and are not limited here.

[0049] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A hose cutting device, characterized in that, The device includes a main body, a first driver, a rotating base, a tool holder, and an auxiliary base. The rotating base is annular and rotatably mounted on the main body. The first driver is mounted on the main body and drivenly connected to the rotating base to drive the rotating base to rotate. The tool holder is rotatably mounted on the rotating base, and the rotation axis of the tool holder is parallel to the rotation axis of the rotating base. A blade assembly is mounted on the tool holder. The auxiliary base is rotatably mounted on the rotating base and has a pusher corresponding to the tool holder. The rotating base can drive the auxiliary base and the tool holder to rotate together. The rotating base has a first speed and a second speed, where the first speed is greater than the second speed. When the rotating base switches from the first speed to the second speed, the auxiliary base can rotate relative to the rotating base and push the tool holder relative to the rotating base through the pusher, causing the blade assembly to move closer to the rotation axis of the rotating base. When the rotating base switches from the second speed to the first speed, the tool holder can reset under the action of centrifugal force and move the blade assembly away from the rotation axis of the rotating base.

2. The hose cutting device according to claim 1, characterized in that, One of the rotating seat and the auxiliary seat is provided with a first linkage member, and the other is provided with a corresponding second linkage member. There are two second linkage members, which are distributed at intervals. The first linkage member is located between the two second linkage members and can move between the two second linkage members and can move to contact the second linkage members. The rotating seat can drive the auxiliary seat to rotate through the contact between the first linkage member and the second linkage member.

3. The hose cutting device according to claim 2, characterized in that, The second linkage has a buffer portion on the side facing the first linkage, and the second linkage can contact the first linkage through the buffer portion.

4. The hose cutting device according to claim 1, characterized in that, The pusher is rotatably connected to the auxiliary seat, and the tool holder is detachably provided with a contact block for contacting the pusher.

5. The hose cutting device according to claim 1, characterized in that, The tool holder is equipped with a counterweight.

6. The hose cutting device according to claim 1, characterized in that, One of the tool holder and the rotary seat is provided with a rotation limiting member, and the other is provided with a corresponding rotation limiting groove. The rotation limiting member is disposed in the rotation limiting groove and can move along the rotation limiting groove to limit the range of deflection angle of the tool holder relative to the rotary seat.

7. The hose cutting device according to claim 1, characterized in that, It also includes a second driver, which is connected to the main body seat and can drive the main body seat to move with the tube body.

8. The hose cutting device according to claim 1, characterized in that, The tool holder is provided with a mounting slot. The blade assembly is detachably mounted on the tool holder and partially located in the mounting slot. A limiting member is movably connected to the tool holder. The limiting member can move or rotate relative to the tool holder and can move to cooperate with the blade assembly in the mounting slot to fix the blade assembly in the mounting slot.

9. The hose cutting device according to claim 1, characterized in that, A sleeve assembly is detachably provided on the main body. The sleeve assembly passes through the middle of the rotating seat and has a conveying channel for the tube body to pass through. The sleeve assembly has a limiting sleeve that contacts the outer wall of the tube body.

10. A control method, characterized in that, The control method for the hose cutting device according to any one of claims 1 to 9 includes: when cutting is required, the first driver drives the rotating seat to switch from the first rotation speed to the second rotation speed; when cutting is required, the first driver drives the rotating seat to switch from the second rotation speed to the first rotation speed.

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