A cutter disc mechanism for cutting chemical fibers

Abstract

This invention addresses the shortcomings of existing chemical fiber cutting devices, which, except for short cuts of carbon fiber and glass fiber where length precision is not critical, typically employ fixed-length cutting mechanisms and guillotine-type cutters, requiring manual feeding of the cutter after each cut. To reduce the repetitive process of manually pulling the fiber bundle from the cut surface to the fixed end after cutting, this invention designs a cutting disc mechanism for chemical fiber cutting, comprising: a circulating clamping device for conveying the chemical fiber to a fixed length; clamping and tightening rails located on both sides of the clamping part of the circulating clamping device for adjusting the clamping part; a movable cutting disc device located inside the circulating clamping device, on the upper side of the conveying plane; and a movable support device located inside the circulating clamping device, on the lower side of the conveying plane, cooperating with the movable cutting disc device to cut the chemical fiber held by the circulating clamping device.

Description

Technical Field

[0001] This invention relates to the field of chemical fiber manufacturing technology, specifically to a cutter head mechanism for cutting chemical fibers. Background Technology

[0002] Currently, due to the various advantages of chemical fibers, they have gradually replaced traditional fibers in many aspects. In the manufacturing of chemical fibers, the final step is to cut the chemical fibers according to the usage requirements. However, since the chemical fibers themselves are not very hard and have irregular shapes, cutting them requires setting a fixed length first, and manual feeding is required after each length setting. Summary of the Invention

[0003] This invention addresses the shortcomings of existing synthetic fiber cutting devices, which, aside from those suitable for short cuts of carbon fiber and glass fiber where length precision is not critical, typically employ a fixed-length cutting mechanism using a guillotine-type cutter, requiring manual loading of the cutter after each cut. To reduce the repetitive process of manually pulling the fiber bundle from the cut surface to the fixed end after cutting, this invention designs a blade disc mechanism for synthetic fiber cutting.

[0004] A cutting disc mechanism for cutting synthetic fibers includes: A circulating conveying device is used to transport chemical fibers to a fixed length. The clamping rails are set on both sides of the clamping part of the circulating clamping device and are used to adjust the clamping part of the circulating clamping device. The movable cutter head cutting device is located inside the circulating clamping device, on the upper side of the conveying plane; The movable support device is located inside the circulating clamping device, on the lower side of the conveying plane, and works with the movable cutter head cutting device to cut the chemical fibers held by the circulating clamping device.

[0005] Preferably, the cyclic conveying device includes: two cyclic conveying structures that are mirror-symmetrical from top to bottom; each cyclic conveying structure includes annular chains on the left and right sides, the chain links are driven by servo motors, and the chain links are fixed in a set position by positioning gears; Within a single circular conveyor structure, several clamping blocks are arranged between the ring chains, with equal spacing between the clamping blocks; The spacing between the clamping blocks is greater than the length of the movable support device.

[0006] The working principle of the circulating clamping device is as follows: two circulating conveying structures work synchronously. When the upper and lower clamping blocks abut against each other, they can clamp the chemical fiber at the contact point. Based on the actual amount of chemical fiber to be cut, the chemical fiber is laid flat in the movable plane formed at the contact point. Furthermore, the clamping force at the contact point is further increased by the upper and lower position limits of the clamping and tightening track, thus preventing fiber leakage due to excessive clamping. According to the set length, several sets of upper and lower clamping blocks cooperate to convey the chemical fiber in the output direction. After reaching the set length, the circulating clamping device can stop working.

[0007] One important point to note is that the required length should ideally be a multiple of the spacing between the clamping blocks. This prevents the conveying process from being interrupted due to the clamping blocks failing to hold the synthetic fiber after cutting.

[0008] For servo motor drives, it is recommended to use geared stepper motors, which are beneficial for precise control of the rotation angle to ensure that the delivery results meet expectations, avoiding the need for clutches and angular velocity sensors required by traditional servo motors.

[0009] Preferably, the clamping block includes: two rollers arranged on the mating surface with the clamping track; the clamping block is hinged to the links of the annular chain.

[0010] When the clamping block is hinged to the chain link, a certain counterweight needs to be set on the clamping block so that its rollers are at an angle that can cooperate with the clamping and tightening track each time the clamping block rotates to the clamping and holding position. The two rollers arranged in series in the forward direction can provide stability while reducing friction between the clamping block and the clamping and tightening track during its forward movement.

[0011] Preferably, the clamping block includes: a roller provided on the mating surface with the clamping track; the clamping block is fixedly connected to a link of the annular chain.

[0012] The method of fixing the clamping block to the chain link requires a certain trade-off in the length of the chain link, but this reduces the need to adjust the center of gravity of the clamping block. At the same time, only one roller is needed to reduce the friction between the clamping block and the clamping track.

[0013] Preferably, the distance between the positioning gear below the upper annular chain and the positioning gear above the lower annular chain is set to distance a; The clamping and tightening track includes: two upper and lower tracks that are mirror images of the conveying plane of the circulating clamping and tightening device, with a distance b between the tracks; the input and output ports of the clamping and tightening track are equipped with guide bell mouths; the distance b is less than the distance a.

[0014] This configuration allows for sufficient clearance between the upper and lower ring chains without the use of a clamping track, thus creating a vertical gap between the clamping blocks before and after the clamping track, which is used to prepare for filling or loosening cut synthetic fibers.

[0015] Preferably, the movable support device includes: a U-shaped groove, with a vertical slide rail and a telescopic cylinder arranged below the U-shaped groove; in the first working position, the top surface of the U-shaped groove is flush with the conveying plane of the circulating clamping device; in the second working position, the top surface of the U-shaped groove is lower than the lower plane of the clamping and tightening rail; a protrusion is provided at the bottom of the U-shaped groove to cooperate with the vertical slide rail, and the telescopic end of the telescopic cylinder is fixed to the U-shaped groove.

[0016] As a preferred embodiment, the movable blade cutting device includes: an upper lifting structure, a parallel moving structure on the lifting end of the upper lifting structure, the moving end of the parallel moving structure being located on the lower side, and a disc cutting machine being installed on the moving end, the moving end being parallel to the central axis of the U-shaped groove. A ring bearing is fitted onto the body of the disc cutter. The inner ring of the bearing is fixed to the body of the disc cutter, and the outer ring of the bearing fits into the top surface of the U-shaped groove. The outer diameter of the bearing is smaller than the diameter of the disc cutter head.

[0017] Preferably, both the upper lifting structure and the parallel moving structure use telescopic cylinders as drives and slide rails as limiting devices.

[0018] The working relationship between the movable cutter head cutting device and the movable support device is as follows: First, after the circulating clamping device stops, the conveying plane of the circulating clamping device will clamp a plane composed of taut synthetic fibers. The movable cutter head cutting device and the movable support device are respectively positioned above and below this plane. At this time, the two devices operate synchronously. The upper lifting structure of the movable cutter head cutting device lowers the parallel moving structure and the disc cutter to abut against the plane composed of synthetic fibers. Driven by the telescopic cylinder below, the movable support device switches from the second working position to the first working position, that is, the upper plane of the U-shaped groove abuts against the plane composed of synthetic fibers. Then, the parallel moving structure in the movable cutter head cutting device operates, cutting the disc cutter from one side of the cutting line to the other side, completing the cutting. Finally, both the movable cutter head cutting device and the movable support device reset, and the circulating clamping device performs the next round of conveying, repeating the above steps.

[0019] The beneficial effects of this utility model are as follows: the circulating clamping device can automatically replenish the chemical fibers that have not yet been cut to a fixed length; the combination of the movable cutter head cutting device and the movable support device avoids the impact force generated by the traditional guillotine type cutting machine, maintaining the stability and durability of the device while keeping the cutting precise. Attached Figure Description

[0020] Figure 1 Overall side view of the device; Figure 2 Assembly diagram of movable blade cutting device; Figure 3 Track alignment diagram for a circulating clamping device; Figure 4 Assembly diagram showing the connection relationship between the clamping block and the track in a circulating clamping device; In the diagram: 1. U-groove, 2. Pressure block, 3. Second telescopic cylinder, 4. First telescopic cylinder, 5. Setting plane, 6. Disc cutter, 7. Ring bearing, 8. Cutter head, 9. Clamping and tightening rail, 10. Clamping block, 11. Positioning base plate, 12. Telescopic cylinder, 13. Positioning gear, 14. Chain link. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example 1

[0022] like Figure 1 and Figure 2 The cutter head mechanism shown includes: A circulating conveying device is used to transport chemical fibers to a fixed length. The clamping rail 9 is set on both sides of the clamping part of the circulating clamping device and is used to adjust the clamping part of the circulating clamping device. The movable cutter head cutting device is located inside the circulating clamping device, on the upper side of the conveying plane; The movable support device is located inside the circulating clamping device, on the lower side of the conveying plane, and works with the movable cutter head cutting device to cut the chemical fibers held by the circulating clamping device.

[0023] like Figure 3 The illustrated cyclic conveying device includes: two cyclic conveying structures that are mirror-symmetrical from top to bottom; each cyclic conveying structure includes annular chains on the left and right sides, the chain links are driven by servo motors, and the chain links are fixed in a set position by positioning gears 13; the positioning gears 13 are mounted on the frame.

[0024] Within a single circulating conveyor structure, several clamping blocks 10 are arranged between the ring chains, with equal spacing between the clamping blocks; the clamping blocks 10 in the upper and lower circulating conveyor structures work together.

[0025] The spacing between the clamping blocks is greater than the length of the movable support device.

[0026] The working principle of the circulating clamping device is as follows: two circulating conveying structures work synchronously. When the upper and lower clamping blocks abut against each other, they can clamp the chemical fiber at the contact point. Based on the actual amount of chemical fiber to be cut, the chemical fiber is laid flat in the movable plane formed at the contact point. Furthermore, the clamping force at the contact point is further increased by the upper and lower position limits of the clamping and tightening track, thus preventing fiber leakage due to excessive clamping. According to the set length, several sets of upper and lower clamping blocks cooperate to convey the chemical fiber in the output direction. After reaching the set length, the circulating clamping device can stop working.

[0027] One important point to note is that the required length should ideally be a multiple of the spacing between the clamping blocks. This prevents the conveying process from being interrupted due to the clamping blocks failing to hold the synthetic fiber after cutting.

[0028] For servo motor drives, it is recommended to use geared stepper motors, which are beneficial for precise control of the rotation angle to ensure that the delivery results meet expectations, avoiding the need for clutches and angular velocity sensors required by traditional servo motors.

[0029] like Figure 4 The clamping block shown includes: two rollers arranged on the mating surface with the clamping track, one in front and one behind; the clamping block 10 is hinged to the link 14 of the annular chain.

[0030] When the clamping block is hinged to the chain link, a certain counterweight needs to be set on the clamping block so that its rollers are at an angle that can cooperate with the clamping and tightening track each time the clamping block rotates to the clamping and holding position. The two rollers arranged in series in the forward direction can provide stability while reducing friction between the clamping block and the clamping and tightening track during its forward movement.

[0031] The distance between the positioning gear below the upper annular chain and the positioning gear above the lower annular chain is set as distance a; The clamping and tightening track includes: two upper and lower tracks that are mirror images of the conveying plane of the circulating clamping and tightening device, with a distance b between the tracks; the input and output ports of the clamping and tightening track are equipped with guide bell mouths; the distance b is less than the distance a.

[0032] This configuration allows for sufficient clearance between the upper and lower ring chains without the use of a clamping track, thus creating a vertical gap between the clamping blocks before and after the clamping track, which is used to prepare for filling or loosening cut synthetic fibers.

[0033] The movable support device includes: a U-shaped groove 1, with a vertical slide rail and a telescopic cylinder arranged below the U-shaped groove; when the U-shaped groove is in the first working position, the top surface of the U-shaped groove is flush with the conveying plane of the circulating clamping device; when the U-shaped groove is in the second working position, the top surface of the U-shaped groove is lower than the lower plane of the clamping and tightening rail; a protrusion is provided at the bottom of the U-shaped groove, which cooperates with the vertical slide rail, and the telescopic end of the telescopic cylinder is fixed to the U-shaped groove.

[0034] Below the U-shaped groove 1, there will be a positioning plate for the next step, such as... Figure 1 As shown, vertical slide rails are provided on both the front and rear sides of the positioning base plate 11. A telescopic cylinder 12 is provided on the lower middle plane of the positioning base plate 11. The telescopic end of the telescopic cylinder 12 passes through and is fixed to the bottom surface of the U-shaped groove 1. The telescopic cylinder 12 is used for switching the work position of the U-shaped groove 1.

[0035] The movable blade cutting device includes: an upper lifting structure, a parallel moving structure on the lifting end of the upper lifting structure, the moving end of the parallel moving structure on the lower side, and a disc cutting machine on the moving end, the movement of the moving end being parallel to the central axis of the U-shaped groove. A ring bearing 7 is fitted onto the body of the disc cutter 6. The inner ring of the bearing is fixed to the body of the disc cutter, and the outer ring of the bearing fits with the top surface of the U-shaped groove. The outer diameter of the bearing is smaller than the diameter of the cutter head 8 of the disc cutter.

[0036] The upper lifting structure includes a top mounting plane 5, on which a first telescopic cylinder 4 and a second telescopic cylinder 3 are mounted. Below the mounting plane are two slide rails: one for vertically limiting the parallel movement structure, and the other for restricting the pressure block. The first telescopic cylinder 4 drives the parallel movement structure, and the second telescopic cylinder 3 drives the pressure block 2. The pressure block 2 engages with the upper surface of the U-shaped groove to clamp and position the chemical fiber before cutting.

[0037] When the ring bearing 7 abuts against the upper plane of the U-groove or against the chemical fiber, it helps to reduce the collision between the machine body and the fiber when the parallel moving structure drives the disc cutter 6 to move parallel. At the same time, it can also serve as a temporary fixing point to fix the cutting.

[0038] The parallel movement structure employs a parallel cylinder-driven slider design. This means the lifting end of the upper lifting structure is fixed to the top surface of the slide rail of the parallel movement structure, while the slider is fixed to the body of the circular cutting machine 6. The cylinder body of the lateral telescopic cylinder is fixed to the side of the slide rail, and the telescopic end of the cylinder drives the slider.

[0039] The working relationship between the movable cutter head cutting device and the movable support device is as follows: First, after the circulating clamping device stops, the conveying plane of the circulating clamping device will clamp a plane composed of taut synthetic fibers. The movable cutter head cutting device and the movable support device are respectively positioned above and below this plane. At this time, the two devices operate synchronously. The upper lifting structure of the movable cutter head cutting device lowers the parallel moving structure and the disc cutter to abut against the plane composed of synthetic fibers. Driven by the telescopic cylinder below, the movable support device switches from the second working position to the first working position, that is, the upper plane of the U-shaped groove abuts against the plane composed of synthetic fibers. Then, the parallel moving structure in the movable cutter head cutting device operates, cutting the disc cutter from one side of the cutting line to the other side, completing the cutting. Finally, both the movable cutter head cutting device and the movable support device reset, and the circulating clamping device performs the next round of conveying, repeating the above steps. Example 2

[0040] In this embodiment, the difference from Embodiment 1 is that the clamping block includes: a roller is provided on the mating surface with the clamping track; the clamping block is fixedly connected to the link of the annular chain. Example 3

[0041] This embodiment is an alternative to the ring bearing 7 in Embodiment 1. In this embodiment, in addition to the ring bearing 7, a second pressure block is also required. The second pressure block has the same size and specifications as the pressure block and is directly connected to the first telescopic cylinder 4. The second pressure block, in this way, has the same clamping effect as the pressure block, and the ring bearing 7 is in contact with the upper side of the second pressure block at all times. In this way, when the disc cutting machine moves, the ring bearing 7 can reduce friction.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cutter head mechanism for cutting synthetic fibers, characterized in that, include: A circulating conveying device is used to transport chemical fibers to a fixed length. The clamping rails are set on both sides of the clamping part of the circulating clamping device and are used to adjust the clamping part of the circulating clamping device. The movable cutter head cutting device is located inside the circulating clamping device, on the upper side of the conveying plane; The movable support device is located inside the circulating clamping device, on the lower side of the conveying plane, and works with the movable cutter head cutting device to cut the chemical fibers held by the circulating clamping device.

2. The cutter head mechanism for cutting synthetic fibers according to claim 1, characterized in that, The circulating clamping device includes: two circulating conveying structures that are mirror-symmetrical from top to bottom; each circulating conveying structure includes annular chains on the left and right sides, the chain links are driven by servo motors, and the chain links are fixed in a set position by positioning gears; Within a single circular conveyor structure, several clamping blocks are arranged between the ring chains, with equal spacing between the clamping blocks; The spacing between the clamping blocks is greater than the length of the movable support device.

3. The cutter head mechanism for cutting synthetic fibers according to claim 2, characterized in that, The clamping block includes: Rollers are provided on the mating surface of the clamping rail, with two rollers arranged at the front and rear. The clamping block is hinged to the link of the ring chain.

4. The cutter head mechanism for cutting synthetic fibers according to claim 2, characterized in that, The clamping block includes: Rollers are provided on the mating surface of the clamping track; the clamping block is fixedly connected to the links of the annular chain.

5. A cutter head mechanism for cutting synthetic fibers according to claim 2, characterized in that, The distance between the positioning gear below the upper annular chain and the positioning gear above the lower annular chain is set as distance a; The clamping and tightening track includes: two upper and lower tracks that mirror the conveying plane of the circulating clamping device, with a distance b between the tracks; the input and output ports of the clamping and tightening track are equipped with guide bell mouths; Distance b is less than distance a.

6. A cutter head mechanism for cutting synthetic fibers according to claim 1, characterized in that, The movable support device includes a U-shaped groove, with a vertical slide rail and a telescopic cylinder installed below the U-shaped groove; in the first working position, the top surface of the U-shaped groove is flush with the conveying plane of the circulating clamping device; in the second working position, the top surface of the U-shaped groove is lower than the lower plane of the clamping and tightening rail. The bottom of the U-shaped groove is provided with a protrusion, which cooperates with the vertical slide rail, and the telescopic end of the telescopic cylinder is fixed to the U-shaped groove.

7. A cutter head mechanism for cutting synthetic fibers according to claim 5, characterized in that, The movable blade cutting device includes: an upper lifting structure, a parallel moving structure on the lifting end of the upper lifting structure, the moving end of the parallel moving structure on the lower side, and a disc cutting machine on the moving end, the movement of the moving end being parallel to the central axis of the U-shaped groove. A ring bearing is fitted onto the body of the disc cutter. The inner ring of the bearing is fixed to the body of the disc cutter, and the outer ring of the bearing fits into the top surface of the U-shaped groove. The outer diameter of the bearing is smaller than the diameter of the disc cutter head.

8. A cutter head mechanism for cutting synthetic fibers according to claim 6, characterized in that, Both the upper lifting structure and the parallel movement structure use telescopic cylinders as drives and slide rails as limit devices.

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