A roll of sports bandage cutting machine

Abstract

The present application relates to sports bandage production related technical field, specifically is a kind of fixed-length cutting machine of sports bandage in roll, including base, further include: first horizontal shaft, second horizontal shaft are rotatably installed on base, bandage mother roll is sleeved on first horizontal shaft, first horizontal shaft is fixed with the limiting ring for limiting the end of bandage mother roll, second horizontal shaft is equipped with multiple cutters, multiple cutters are distributed along helical path in the axial direction of second horizontal shaft;When first horizontal shaft rotates, screw sleeve is threadedly engaged with screw rod, so that the ball can roll along the inner wall of bandage roll core, so that the support position of telescopic arm to bandage roll core can be automatically changed with cutting process, avoid in cutting process, because bandage mother roll is only one end supported and fixed, so that the overhanging is too long, makes roll core axis deviate from theoretical center of rotation, further easily cause the defect condition that finished product bandage end surface appears inclination, and the problem that bandage end portion flatness is not ideal.

Description

Technical Field

[0001] This invention relates to the technical field of sports bandage production, specifically a roll-type sports bandage fixed-length cutting machine. Background Technology

[0002] Sports bandages, as essential consumables in sports medicine and rehabilitation nursing, are widely used for joint protection, muscle strain prevention, and postoperative immobilization due to their excellent elasticity, breathability, and support. These bandages are typically made of blends of cotton, spandex, or synthetic fibers, possessing both moderate stretch and resilience, providing stable pressure while ensuring freedom of movement. In industrial production, finished bandages are precisely wound onto cylindrical cores that can be several meters long, forming a large master roll. This master roll is then cut into standardized length units to meet the specifications required for different applications.

[0003] Existing cutting equipment typically mounts the core onto a horizontally arranged spindle, with a clamping mechanism at one end of the spindle. Torque is transmitted by clamping the core, thereby driving the core to rotate synchronously with the spindle, and working with the cutter to complete spiral or straight cutting operations.

[0004] However, since the core needs to be axially fitted from the end of the spindle, a clearance must be reserved between the inner diameter of the core and the outer diameter of the spindle to ensure assembly feasibility. The core has a large overhang length, and the area far from the clamping mechanism forms a typical cantilever beam stress state. When cutting the far end of the core, the combined bending moment generated by the cutting resistance and the weight of the core will cause elastic deformation, causing the core axis to deviate from the theoretical center of rotation. This can easily lead to defects such as tilting at the end face of the finished bandage, resulting in unsatisfactory flatness at the end of the bandage. Summary of the Invention

[0005] The purpose of this invention is to provide a roll-type motion bandage fixed-length cutting machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A roll-type motion bandage fixed-length cutting machine includes a machine base and further includes: Rotate the first horizontal shaft and the second horizontal shaft mounted on the machine base. The bandage mother roll is fitted onto the first horizontal shaft. A limiting ring for limiting the end of the bandage mother roll is fixed on the first horizontal shaft. Multiple cutters are provided on the second horizontal shaft. The multiple cutters are distributed along the spiral path along the axial direction of the second horizontal shaft. Multiple horizontal arms are provided on the first horizontal axis and are equidistantly distributed along the circumference. The multiple horizontal arms can be driven by a power mechanism provided on the machine base to perform an expansion action so that the protrusions provided on the horizontal arms can support the inner wall of the bandage core near the limiting ring. An elastic mechanism is also provided in the first horizontal axis. The elastic mechanism cooperates with the positioning mechanism provided on the side of the machine base to support the inner wall of the bandage core away from the limiting ring. Multiple sets of auxiliary support mechanisms are provided within the first horizontal axis. Each set of auxiliary support mechanisms is connected to multiple horizontal arms and can perform the support action on the inner wall of the bandage core synchronously with the protrusion. When the first horizontal axis rotates, the threaded drive mechanism provided within the first horizontal axis can drive the multiple sets of auxiliary support mechanisms to move along the axial direction of the first horizontal axis.

[0007] As described above, the roll-type motion bandage fixed-length cutting machine has the following configuration: the horizontal arm is arranged in an "L" shape, including a horizontal section distributed along the first horizontal axis and a bent section distributed along the first horizontal axis. The protrusion is provided on the horizontal section and is slidably connected to the first horizontal axis. The bent section is slidably connected to the first horizontal axis and is also connected to the power mechanism.

[0008] As described above, the roll-type motion bandage fixed-length cutting machine includes a screw located inside the first horizontal axis and concentric with the first horizontal axis, and a threaded sleeve located on the screw and threadedly connected to the screw. Multiple sets of the auxiliary support mechanisms are connected to the threaded sleeve and are distributed equidistantly along the circumference. One end of the lead screw passes through the end of the first horizontal shaft, and the other end is fixed to the machine base.

[0009] As described above, the roll-type motion bandage fixed-length cutting machine has multiple strip-shaped through grooves equidistantly arranged along the circumference on the first horizontal shaft. The length direction of the strip-shaped through grooves is parallel to the central axis of the first horizontal shaft. The auxiliary support mechanism includes a guide arm fixed to the threaded sleeve and a telescopic arm slidably fitted with the guide arm. A column is fixed at one end of the telescopic arm away from the threaded sleeve, and a ball bearing is provided at the end of the column.

[0010] As described above, the roll-type motion bandage fixed-length cutting machine has the following features: the end of the guide arm away from the threaded sleeve is located in the strip-shaped through groove and is slidably connected to the first horizontal axis; the horizontal arm passes through the guide arm and the telescopic arm; the horizontal arm is slidably connected to the telescopic arm; and the guide arm has openings on both sides for the horizontal arm to move.

[0011] As described above, the roll-type motion bandage fixed-length cutting machine includes two first cylinders fixedly mounted on the machine base and a transverse shift seat slidably mounted on the machine base. The transverse shift seat is fixed to the movable ends of the two first cylinders and connected to a transmission structure mounted on the first transverse shaft.

[0012] As described above, the roll-type motion bandage fixed-length cutting machine includes a transmission structure comprising a collar slidably sleeved on the first horizontal shaft and a push-pull rod connecting the collar and the horizontal arm. The two ends of the push-pull rod are respectively hinged to the collar and the horizontal arm, and the collar is rotatably connected to the horizontal shift seat.

[0013] As described above, the roll-type motion bandage fixed-length cutting machine includes a positioning mechanism comprising a swing arm rotatably mounted on the machine base and a limiting cylinder fixedly connected to the swing arm. A third cylinder is rotatably mounted on the side of the machine base, and the movable end of the third cylinder is hinged to the swing arm. The limiting cylinder also has a second cylinder fixed inside it. The movable end of the second cylinder is fixed to a positioning seat located inside the limiting cylinder. The positioning seat is adapted to the end of the first horizontal shaft and also cooperates with the elastic mechanism.

[0014] As described above, the roll-type motion bandage fixed-length cutting machine has a disc body fixed inside the first horizontal shaft. The elastic mechanism includes a guide post fixed at the center of the disc body, a sleeve that slides with the guide post, and a spring sleeved on the outer periphery of the guide post. The two ends of the spring are respectively connected to the disc body and the sleeve. The sleeve extends from the end away from the disc body to the outside of the first horizontal axis, slides with the first horizontal axis, and cooperates with the positioning seat. The sleeve is also connected to multiple sets of follow-up support structures provided on the disc body.

[0015] As described above, the roll-type motion bandage fixed-length cutting machine: multiple sets of the following support structures are equidistantly distributed along the circumference on the disc body. The following support structure includes a guide rail fixed on the disc body and arranged radially along the disc body, a slider slidably fitted in the guide rail, and a support rod fixed to the slider. The support rod is arranged radially along the first horizontal axis and is slidably connected to the first horizontal axis. A connecting rod is provided between the slider and the sleeve, and the two ends of the connecting rod are respectively hinged to the slider and the sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The present invention provides multiple horizontal arms in a first horizontal axis, which are driven by a power mechanism to expand in the circumference of the first horizontal axis. The protrusions support the ends of the bandage core. At the same time, the movement of the horizontal arms can drive the telescopic arms to apply pressure to the inner wall of the bandage core through the ball bearings. When the first horizontal axis rotates, the threaded sleeve engages with the lead screw, allowing the balls to roll along the inner wall of the bandage core. This enables the telescopic arm to automatically change its support position on the bandage core as the cutting process progresses. This prevents the bandage core from being overstretched due to only one end being supported and fixed during the cutting process, which would cause the core axis to deviate from the theoretical rotation center. Consequently, this could easily result in a tilted end face of the finished bandage and unsatisfactory flatness at the end of the bandage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of a roll-type motion bandage fixed-length cutting machine.

[0018] Figure 2 This is a structural schematic diagram from another angle of one embodiment of a roll-to-length bandage cutting machine.

[0019] Figure 3 This is a schematic diagram of the structure of the first horizontal axis in one embodiment of a roll-to-roll motion bandage fixed-length cutting machine.

[0020] Figure 4 This is a schematic diagram of the internal structure of the first horizontal axis in one embodiment of a roll-type motion bandage fixed-length cutting machine.

[0021] Figure 5 A cross-sectional view of the first horizontal axis in one embodiment of a roll-to-length bandage cutting machine.

[0022] Figure 6 for Figure 4 Enlarged view of the structure at point A in the middle.

[0023] Figure 7 for Figure 5 Enlarged view of the structure at point B in the middle.

[0024] Figure 8 An exploded view of the auxiliary support mechanism in one embodiment of a roll-to-length bandage cutting machine.

[0025] Figure 9 An exploded view of the elastic mechanism in one embodiment of a roll-to-length bandage cutting machine.

[0026] Figure 10 This is a schematic diagram illustrating the connection state between the positioning seat and the limiting cylinder in one embodiment of a roll-type motion bandage fixed-length cutting machine.

[0027] Figure 11 This is a diagram showing the state changes of the cutting tool in one embodiment of a roll-type motion bandage fixed-length cutting machine.

[0028] In the diagram: 1. Base; 2. First horizontal axis; 201. Strip groove; 3. Second horizontal axis; 4. Cutting tool; 5. Horizontal arm; 501. Protrusion; 6. Horizontal shift seat; 7. First cylinder; 8. Collar; 9. Push-pull rod; 10. Limiting ring; 11. Lead screw; 12. Threaded sleeve; 13. Column; 1301. Ball bearing; 14. Guide arm; 1401. Through port; 15. Telescopic arm; 16. Disc; 1601. Guide rail; 17. Slider; 1701. Support rod; 18. Spring; 19. Guide post; 20. Sleeve; 21. Connecting rod; 22. Swing arm; 23. Limiting sleeve; 24. Second cylinder; 25. Positioning seat; 26. Third cylinder. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0031] Please see Figures 1-11 In this embodiment, a roll-type motion bandage fixed-length cutting machine includes a machine base 1, and further includes: Rotate the first horizontal shaft 2 and the second horizontal shaft 3 mounted on the base 1. The bandage mother roll is fitted onto the first horizontal shaft 2. The first horizontal shaft 2 is fixed with a limiting ring 10 for limiting the end of the bandage mother roll. The second horizontal shaft 3 is provided with multiple cutters 4, which are distributed along the spiral path along the axial direction of the second horizontal shaft 3. Multiple horizontal arms 5 are provided on the first horizontal axis 2 and are equidistantly distributed along the circumference. The multiple horizontal arms 5 can be driven by a power mechanism provided on the base 1 to perform an expansion action so that the protrusions 501 provided on the horizontal arms 5 can support the inner wall of the bandage core near the limiting ring 10. An elastic mechanism is also provided in the first horizontal axis 2. The elastic mechanism cooperates with the positioning mechanism provided on the side of the base 1 to support the inner wall of the bandage core away from the limiting ring 10. Multiple sets of auxiliary support mechanisms are provided in the first horizontal axis 2. The multiple sets of auxiliary support mechanisms are connected to multiple horizontal arms 5 respectively. They can perform the support action on the inner wall of the bandage core synchronously with the protrusion 501. When the first horizontal axis 2 rotates, the threaded drive mechanism provided in the first horizontal axis 2 can drive the multiple sets of auxiliary support mechanisms to move along the axial direction of the first horizontal axis 2.

[0032] In this embodiment, it should be further explained that during operation, the first horizontal axis 2 and the second horizontal axis 3 rotate simultaneously, with the first horizontal axis 2 rotating faster and the second horizontal axis 3 rotating slower. Since multiple cutters 4 are distributed along the spiral path along the axial direction of the second horizontal axis 3, the multiple cutters 4 act on the bandage roll in sequence to achieve fixed-length cutting of the bandage roll, avoiding excessive pressure caused by multiple cutters acting on the bandage roll at the same time, which could cause deformation of the first or second horizontal axis and affect the cutting accuracy. During the cutting process, the threaded drive mechanism drives multiple sets of auxiliary support mechanisms to move axially along the first transverse axis 2. The support position of these mechanisms on the inner wall of the bandage roll core changes with the cutting process of the bandage mother roll, thus avoiding the problem that the bandage mother roll is only supported and fixed at one end during the cutting process, resulting in excessive overhang and affecting the cutting accuracy.

[0033] Please see Figure 11 This demonstrates the positional changes of the cutter 4 during the cutting process, thereby achieving circumferential cutting of the bandage master roll. Due to the relatively high rotation speed of the first horizontal axis 2, as the cutter 4 slowly rotates with the second horizontal axis 3, the cutter 4 gradually moves towards the core of the bandage master roll, achieving continuous changes in the cutting position. At the same time, a fitting gap is reserved between the inner diameter of the core and the outer diameter of the first horizontal axis 2, allowing the cutting end of the cutter 4 to extend into the gap, thus ensuring the cutting of the core.

[0034] As a further embodiment of the present invention, please refer again. Figure 6 and Figure 8 The cross arm 5 is arranged in an L-shape, including a horizontal section distributed along the axial direction of the first horizontal axis 2 and a bent section distributed along the radial direction of the first horizontal axis 2. The protrusion 501 is provided on the horizontal section and is slidably connected to the first horizontal axis 2. The bent section is slidably connected to the first horizontal axis 2 and is also connected to the power mechanism.

[0035] Furthermore, during operation, the bandage mother roll to be cut is mounted on the first horizontal shaft 2, and one end of the bandage mother roll enters the limiting ring 10, which can axially limit the bandage mother roll. When the power mechanism is working, it can drive the bent section of the horizontal arm 5 to move in the radial direction of the first horizontal axis 2 toward the outside of the first horizontal axis 2. Correspondingly, the horizontal section of the horizontal arm 5 can drive the protrusion 501 to move in the radial direction of the first horizontal axis 2 toward the limiting ring 10, and support the inner wall of the end of the bandage roll located in the limiting ring 10.

[0036] As a further embodiment of the present invention, please refer again. Figure 5 The threaded drive mechanism includes a lead screw 11 disposed inside the first horizontal shaft 2 and concentric with the first horizontal shaft 2, and a threaded sleeve 12 disposed on the lead screw 11 and threadedly connected to the lead screw 11. Multiple sets of the auxiliary support mechanisms are connected to the threaded sleeve 12 and are distributed equidistantly along the circumference. One end of the lead screw 11 passes through the end of the first horizontal shaft 2, and the other end is fixed to the base 1.

[0037] To elaborate, one end of the first horizontal axis 2 is open, and the lead screw 11 passes through this end. Since the lead screw 11 is fixed to the machine base 1, during the cutting process, when the first horizontal axis 2 rotates, it drives the threaded sleeve 12 to rotate through the auxiliary support mechanism. The threaded sleeve 12 will then engage with the lead screw 11 through a thread. In turn, the threaded sleeve 12 can drive multiple sets of auxiliary support mechanisms to move circumferentially along the first horizontal axis 2, so that the auxiliary support mechanisms can change the support position of the bandage core according to the cutting process of the bandage master roll. This realizes the mobile support function during the cutting process, improves the stability of the bandage master roll when it is cut at various positions, and ensures the cutting accuracy.

[0038] As a further embodiment of the present invention, please refer again. Figure 3 and Figure 8 The first horizontal axis 2 is also provided with a plurality of strip-shaped through grooves 201 at equal intervals along the circumference. The length direction of the strip-shaped through grooves 201 is parallel to the central axis of the first horizontal axis 2. The auxiliary support mechanism includes a guide arm 14 fixed to the threaded sleeve 12 and a telescopic arm 15 slidably fitted with the guide arm 14. A column 13 is fixed at one end of the telescopic arm 15 away from the threaded sleeve 12. A ball bearing 1301 is provided at the end of the column 13. Wherein, the end of the guide arm 14 away from the threaded sleeve 12 is located in the strip groove 201 and is slidably connected to the first horizontal shaft 2. The horizontal arm 5 passes through the guide arm 14 and the telescopic arm 15. The horizontal arm 5 is slidably connected to the telescopic arm 15. The guide arm 14 has openings 1401 on both sides for the horizontal arm 5 to move.

[0039] In this embodiment, the cylinder mechanism operates, driving the horizontal arm 5 to move radially in the first horizontal axis 2, so that the protrusion 501 enters the limiting ring 10 and performs a supporting action on the inner wall of the end of the bandage roll located in the limiting ring 10. Correspondingly, the horizontal arm 5 drives the telescopic arm 15 to slide in the direction of the guide arm 14, so that the ball 1301 can contact the inner wall of the bandage roll, and simultaneously achieve support for the bandage roll. During the cutting process, the first horizontal axis 2 rotates, the strip groove 201 acts as a guide, the threaded sleeve 12 engages with the lead screw 11, and the threaded sleeve 12 drives the guide arm 14 to move along the strip groove 201 along the axial direction of the first horizontal axis 2. The ball bearing 1301 rolls along the inner wall of the bandage roll core along the axial direction of the bandage roll core, realizing the moving auxiliary stabilization function of the bandage mother roll during the cutting process, ensuring stability when cutting the bandage mother roll at various positions.

[0040] Therefore, the present invention provides multiple horizontal arms 5 in the first horizontal axis 2, which are driven by a power mechanism to expand in the circumference of the first horizontal axis 2. The protrusions 501 support the ends of the bandage core. At the same time, the movement of the horizontal arms 5 can drive the telescopic arm 15 to apply pressure to the inner wall of the bandage core through the ball bearings 1301. When the first horizontal axis 2 rotates, the threaded sleeve 12 engages with the lead screw 11, allowing the ball bearing 1301 to roll along the inner wall of the bandage core. This allows the support position of the telescopic arm 15 on the bandage core to automatically change with the cutting process, preventing excessive overhang caused by only one end of the bandage roll being supported and fixed during the cutting process. This would cause the core axis to deviate from the theoretical rotation center, which could easily lead to a tilted end face of the finished bandage and unsatisfactory flatness at the end of the bandage.

[0041] As a further embodiment of the present invention, please refer again. Figure 3 , Figure 5 as well as Figure 6 The power mechanism includes two first cylinders 7 fixedly mounted on the base 1 and a transverse sliding seat 6 slidably mounted on the base 1. The transverse sliding seat 6 is fixed to the movable ends of the two first cylinders 7 and connected to a transmission structure mounted on the first transverse shaft 2. The transmission structure includes a collar 8 slidably sleeved on the first transverse shaft 2 and a push-pull rod 9 connecting the collar 8 and the transverse arm 5. The two ends of the push-pull rod 9 are respectively hinged to the collar 8 and the transverse arm 5, and the collar 8 is rotatably connected to the transverse sliding seat 6.

[0042] In this embodiment, during operation, the movable end of the first cylinder 7 extends, which can push the collar 8 to slide toward the limiting ring 10 on the first horizontal axis 2. Correspondingly, the collar 8 can push the horizontal arm 5 to move radially along the first horizontal axis 2 through the push-pull rod 9, so that multiple horizontal arms 5 perform an expansion action until the protrusion 501 enters the limiting ring 10 and supports the inner wall of the end of the bandage core located in the limiting ring 10. At the same time, the horizontal arm 5 drives the telescopic arm 15 to slide toward the outside of the guide arm 14, so that the ball 1301 contacts the inner wall of the bandage core, realizing the auxiliary stabilization function during the cutting process.

[0043] As a further embodiment of the present invention, please refer again. Figure 1 and Figure 10 The positioning mechanism includes a swing arm 22 rotatably mounted on the base 1 and a limiting cylinder 23 fixedly connected to the swing arm 22. A third cylinder 26 is rotatably mounted on the side of the base 1, and the movable end of the third cylinder 26 is hinged to the swing arm 22. The limiting cylinder 23 also has a second cylinder 24 fixed inside it. The movable end of the second cylinder 24 is fixed to the positioning seat 25 located inside the limiting cylinder 23. The positioning seat 25 is adapted to the end of the first horizontal shaft 2 and also cooperates with the elastic mechanism.

[0044] In this embodiment, during operation, the third cylinder 26 can drive the swing arm 22 to swing, thereby causing the limiting cylinder 23 to perform a flipping action. When the limiting cylinder 23 flips to the side end of the first horizontal shaft 2, the movable end of the second cylinder 24 extends, driving the positioning seat 25 to move toward the end of the first horizontal shaft 2 until the positioning seat 25 and the end of the first horizontal shaft 2 are docked. This can effectively ensure the stability of the rotation of the first horizontal shaft 2 during the cutting process and avoid the problem of poor cutting accuracy caused by radial runout of the first horizontal shaft 2. After the cutting is completed, the second cylinder 24 drives the end of the positioning seat 25 away from the first horizontal axis 2 to move back to its original position. Then the third cylinder 26 drives the swing arm 22 to flip and move the limiting cylinder 23 away, so that the workers can easily remove the cut bandage from the first horizontal axis 2.

[0045] As a further embodiment of the present invention, please refer again. Figure 7 and Figure 9The first horizontal axis 2 also has a disk body 16 fixed inside. The elastic mechanism includes a guide post 19 fixed at the center of the disk body 16, a sleeve 20 that slides with the guide post 19, and a spring 18 sleeved on the outer periphery of the guide post 19. The two ends of the spring 18 are respectively connected to the disk body 16 and the sleeve 20. The end of the sleeve 20 away from the disk body 16 extends to the outside of the first horizontal axis 2, slides with the first horizontal axis 2, and cooperates with the positioning seat 25. The sleeve 20 is also connected to multiple sets of follow-up support structures provided on the disk body 16.

[0046] Multiple sets of the following support structures are equidistantly distributed along the circumference of the disk body 16. The following support structure includes a guide rail 1601 fixed on the disk body 16 and arranged radially along the disk body 16, a slider 17 slidably fitted in the guide rail 1601, and a support rod 1701 fixed to the slider 17. The support rod 1701 is arranged radially along the first horizontal axis 2 and slidably connected to the first horizontal axis 2. A connecting rod 21 is provided between the slider 17 and the sleeve 20. The two ends of the connecting rod 21 are respectively hinged to the slider 17 and the sleeve 20.

[0047] In this embodiment, as the movable end of the second cylinder 24 extends, driving the positioning seat 25 to move toward the end of the first horizontal axis 2, the positioning seat 25 first contacts the end of the sleeve 20 away from the disc 16. Then, the positioning seat 25 applies a thrust to the sleeve 20, causing the sleeve 20 to slide toward the inside of the first horizontal axis 2. Correspondingly, the spring 18 is compressed, and the sleeve 20 pushes the slider 17 to slide on the guide rail 1601 away from the center of the disc 16 via the connecting rod 21. The support rod 1701 slides radially toward the outside of the first horizontal axis 2, supporting the inner wall of the end of the bandage core away from the limiting ring 10. In this regard, the positioning seat 25 is used to limit and stabilize the first horizontal axis 2 to prevent the first horizontal axis 2 from radially jumping during the cutting process and affecting the cutting effect. On the other hand, the positioning seat 25 can cause the sleeve 20 to slide axially relative to the first horizontal axis 2 so as to support and fasten the end of the bandage core away from the limiting ring 10 through the support rod 1701. It should be noted that in actual production, when the first bandage roll is cut, the threaded sleeve 12 moves to one side. When the second bandage roll is cut, both the first horizontal axis 2 and the second horizontal axis 3 change their rotation direction, so that the threaded sleeve 12 can move to the other side. This process is repeated in an alternating manner. For this purpose, the blade on the cutting tool 4 is double-edged.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A roll-type motion bandage fixed-length cutting machine, comprising a machine base; Its features are, Also includes: Rotate the first horizontal shaft and the second horizontal shaft mounted on the machine base. The bandage mother roll is fitted onto the first horizontal shaft. A limiting ring for limiting the end of the bandage mother roll is fixed on the first horizontal shaft. Multiple cutters are provided on the second horizontal shaft. The multiple cutters are distributed along the spiral path along the axial direction of the second horizontal shaft. Multiple horizontal arms are provided on the first horizontal axis and are equidistantly distributed along the circumference. The multiple horizontal arms can be driven by a power mechanism provided on the machine base to perform an expansion action so that the protrusions provided on the horizontal arms can support the inner wall of the bandage core near the limiting ring. An elastic mechanism is also provided in the first horizontal axis. The elastic mechanism cooperates with the positioning mechanism provided on the side of the machine base to support the inner wall of the bandage core away from the limiting ring. Multiple sets of auxiliary support mechanisms are provided within the first horizontal axis. Each set of auxiliary support mechanisms is connected to multiple horizontal arms and can perform the support action on the inner wall of the bandage core synchronously with the protrusion. When the first horizontal axis rotates, the threaded drive mechanism provided within the first horizontal axis can drive the multiple sets of auxiliary support mechanisms to move along the axial direction of the first horizontal axis.

2. The roll-type motion bandage fixed-length cutting machine according to claim 1, characterized in that, The cross arm is arranged in an "L" shape, including a horizontal section distributed along the first horizontal axis and a bent section distributed along the first horizontal axis. The protrusion is provided on the horizontal section and is slidably connected to the first horizontal axis. The bent section is slidably connected to the first horizontal axis and is also connected to the power mechanism.

3. The roll-type motion bandage fixed-length cutting machine according to claim 1, characterized in that, The threaded drive mechanism includes a lead screw disposed inside the first horizontal axis and concentric with the first horizontal axis, and a threaded sleeve disposed on the lead screw and threadedly connected to the lead screw. Multiple sets of the auxiliary support mechanisms are connected to the threaded sleeve and are distributed equidistantly along the circumference. One end of the lead screw passes through the end of the first horizontal shaft, and the other end is fixed to the machine base.

4. A roll-type motion bandage fixed-length cutting machine according to claim 3, characterized in that, The first horizontal axis is also provided with a plurality of strip-shaped through grooves at equal intervals along the circumference. The length direction of the strip-shaped through grooves is parallel to the central axis of the first horizontal axis. The auxiliary support mechanism includes a guide arm fixed to the threaded sleeve and a telescopic arm slidably fitted with the guide arm. A column is fixed to one end of the telescopic arm away from the threaded sleeve, and a ball bearing is provided at the end of the column.

5. A roll-type motion bandage fixed-length cutting machine according to claim 4, characterized in that, The end of the guide arm away from the threaded sleeve is located in the strip groove and is slidably connected to the first horizontal axis. The horizontal arm passes through the guide arm and the telescopic arm, and is slidably connected to the telescopic arm. The guide arm has openings on both sides for the horizontal arm to move.

6. The roll-type motion bandage fixed-length cutting machine according to claim 1, characterized in that, The power mechanism includes two first cylinders fixedly mounted on the base and a transverse sliding seat slidably mounted on the base. The transverse sliding seat is fixed to the movable ends of the two first cylinders and connected to a transmission structure mounted on the first transverse shaft.

7. A roll-type motion bandage fixed-length cutting machine according to claim 6, characterized in that, The transmission structure includes a collar slidably sleeved on the first horizontal shaft and a push-pull rod connecting the collar and the horizontal arm. The two ends of the push-pull rod are respectively hinged to the collar and the horizontal arm, and the collar is rotatably connected to the horizontal shift seat.

8. A roll-type motion bandage fixed-length cutting machine according to claim 1, characterized in that, The positioning mechanism includes a swing arm rotatably mounted on the base and a limiting cylinder fixedly connected to the swing arm. A third cylinder is rotatably mounted on the side of the base, and the movable end of the third cylinder is hinged to the swing arm. The limiting cylinder also has a second cylinder fixed inside it. The movable end of the second cylinder is fixed to a positioning seat located inside the limiting cylinder. The positioning seat is adapted to the end of the first horizontal shaft and also cooperates with the elastic mechanism.

9. A roll-type motion bandage fixed-length cutting machine according to claim 8, characterized in that, The first horizontal axis also has a disk body fixed inside. The elastic mechanism includes a guide post fixed at the center of the disk body, a sleeve that slides with the guide post, and a spring sleeved on the outer periphery of the guide post. The two ends of the spring are respectively connected to the disk body and the sleeve. The sleeve extends from the end away from the disc body to the outside of the first horizontal axis, slides with the first horizontal axis, and cooperates with the positioning seat. The sleeve is also connected to multiple sets of follow-up support structures provided on the disc body.

10. A roll-type motion bandage fixed-length cutting machine according to claim 9, characterized in that, Multiple sets of the aforementioned follower support structures are equidistantly distributed along the circumference on the disk body. Each follower support structure includes a guide rail fixed to the disk body and arranged radially along the disk body, a slider slidably fitted in the guide rail, and a support rod fixed to the slider. The support rod is arranged radially along the first horizontal axis and is slidably connected to the first horizontal axis. A connecting rod is provided between the slider and the sleeve, and the two ends of the connecting rod are respectively hinged to the slider and the sleeve.

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