Tubular fabric cutting machine and tubular fabric cutting and conveying method

Abstract

This invention relates to a tubular fabric cutting machine and a tubular fabric cutting and conveying method, comprising: an automatic cutting mechanism for cutting the fabric; a conveying mechanism disposed at the feed inlet of the automatic cutting mechanism; a first pressure roller assembly disposed above the feed end of the conveying mechanism, the first pressure roller assembly cooperating with the conveying mechanism to provide conveying power; and a material straightening assembly fixedly disposed on one side of the feed end of the conveying mechanism for guiding and expanding the fabric so that the cross-section of the fabric enters between the conveying mechanism and the first pressure roller assembly in a straight line. The material straightening assembly is disposed on one side of the feed end of the conveying mechanism to guide and expand the fabric so that the cross-section of the fabric enters the subsequent conveying and cutting processes in a straight line, avoiding the fabric from entering the cutting process in a twisted shape, thereby enabling precise cutting of tubular fabric, reducing labor costs, improving material utilization, and extending the service life of the cutting equipment.

Description

Technical Field

[0001] This invention relates to the field of garment processing technology, and in particular to a tubular fabric cutting machine and a tubular fabric cutting and conveying method. Background Technology

[0002] The tubular fabrics used in garment processing are often whole pieces of fabric of a certain length. During the garment processing process, the tubular fabrics, such as wool textiles, need to be cut into sections according to a certain length, and then the sections of fabric are made into finished products such as hats and scarves.

[0003] In the garment processing stage, after the tubular fabric is received in a whole roll, it is automatically cut into the set length by an automatic cutting machine. The cutting process can be automated. However, during the production process, the tubular fabric often has a certain twist in a certain part within a certain length range. In the cutting process of the finished product, it is not possible to accurately control the size of each segment, and the cut parts may be uneven or not in line with requirements, resulting in waste of fabric. In severe cases, it may even damage the cutting blade.

[0004] Currently, the process typically involves manually smoothing the material before it enters the automatic conveying and cutting process, which requires an operator to be on duty, resulting in high labor costs. Summary of the Invention

[0005] To address the shortcomings of existing production technologies, the applicant provides a tubular fabric cutting machine and a tubular fabric cutting and conveying method, which automatically organizes the tubular fabric during the conveying process, meets the requirements for precise cutting of the tubular fabric, reduces labor costs, improves material utilization, and extends the service life of the cutting equipment.

[0006] The technical solution adopted in this invention is as follows:

[0007] A tubular fabric cutting machine, comprising:

[0008] An automatic cutting mechanism for cutting the fabric;

[0009] A conveying mechanism is provided at the feed inlet of the automatic cutting mechanism;

[0010] The first pressure roller assembly is disposed above the feed end of the conveying mechanism, and the first pressure roller assembly cooperates with the conveying mechanism to provide conveying power;

[0011] The material preparation assembly is fixedly installed on one side of the feed end of the conveying mechanism to guide and expand the fabric, so that the cross-section of the fabric enters between the conveying mechanism and the first pressure roller assembly in a straight line.

[0012] As a further improvement to the above technical solution:

[0013] The structure of the material assembly includes:

[0014] A fixed frame is fixedly installed on the frame of the conveying mechanism;

[0015] An internal guide cylinder, the outer wall of which matches the inner cylinder size of the fabric, is used to expand the fabric so that the fabric is in a cylindrical shape, and the central axis of the internal guide cylinder is arranged vertically.

[0016] An external limiting member is provided on the fixed frame to limit the inner guide cylinder horizontally and vertically from the outer periphery of the inner guide cylinder. There is a gap between the external limiting member and the inner guide cylinder, and the gap is used for the fabric to pass through.

[0017] An internal guide piece is positioned above the internal guide cylinder to open the fabric from within, making the cross-section of the fabric flat.

[0018] The structure of the internal guide cylinder is as follows:

[0019] It includes a stretching section, the outer wall of which is a cylindrical surface, and the diameter of the cylindrical surface is larger than the diameter of the fabric in its natural state;

[0020] It also includes a lower guide cone surface located at the lower end of the spreading section, and an upper guide cone surface located at the upper end of the spreading section;

[0021] The lower guide cone is an inverted cone, used to guide the fabric, causing the twisted fabric to twist in the opposite direction to straighten it out. The upper guide cone is used to shrink the fabric to its natural state before it passes through the straight guide.

[0022] There are multiple external limiting components, which are evenly distributed in an array around the central axis of the internal guide cylinder. The structure of each external limiting component is as follows:

[0023] Includes a bracket connected to the fixed frame;

[0024] The lower end of the bracket is provided with a lower roller that cooperates with the lower end of the inner guide cylinder. Multiple lower rollers support the inner guide cylinder from the outer periphery of the lower end of the inner guide cylinder, and there is a gap between the lower rollers and the inner guide cylinder.

[0025] The upper end of the bracket is provided with an upper roller that cooperates with the upper end of the inner guide cylinder. Multiple upper rollers restrict the vertical height of the inner guide cylinder from the outer periphery of the upper end of the inner guide cylinder, and there is a gap between the upper roller and the inner guide cylinder.

[0026] Each external limiting member also includes a screw threadedly connected to the fixing frame, the end of the screw being detachably connected to the bracket, and a guide rod, one end of the guide rod being threadedly connected to the bracket, and the other end of the guide rod being slidably connected to the fixing frame.

[0027] The structure of the single-line guide component is as follows:

[0028] It includes symmetrically arranged support rods, one end of which is fixedly connected to the inner guide cylinder, and the other end of which is located at the upper end of the inner guide cylinder and is provided with a guide head. The two guide heads open the fabric from the inside, making the cross-section of the fabric flat.

[0029] It also includes a steering roller assembly, which is located above the feed end of the conveying mechanism and above the material straightening assembly. The steering roller assembly is used to guide the fabric passing through the material straightening assembly and change the conveying direction of the fabric so that the cross-section of the fabric enters between the conveying mechanism and the first pressure roller assembly in a straight line.

[0030] A guide roller assembly is provided between the steering roller assembly and the feed end of the conveying mechanism. The structure of the guide roller assembly includes a guide roller base fixedly installed on the frame of the conveying mechanism, a guide roller shaft rotatably installed on the guide roller base, and a first limiting block and a second limiting block spaced apart along the axial direction on the guide roller shaft. The first limiting block and the second limiting block are used to guide and limit the fabric with a straight cross section.

[0031] It also includes a second pressure roller assembly, the structure of which includes a movable roller and a second shaft seat located above the discharge end of the conveying mechanism. The movable roller is rotatably mounted on the second shaft seat. A second guide shaft is fixedly mounted on the frame of the conveying mechanism. The second shaft seat is slidably mounted on the second guide shaft. The movable roller is located above the fabric and is supported by the fabric. It also includes a sensor for detecting the height of the second shaft seat.

[0032] A method for cutting and conveying tubular fabric includes the following steps:

[0033] A material straightening assembly is used to guide and expand the fabric into a cylindrical shape from the inside of the fabric, and to transport the fabric from bottom to top, so that the fabric, which is in a twisted state at the lower end of the material straightening assembly, is twisted in the opposite direction to straighten it out.

[0034] After the straightened fabric passes the top of the straightening assembly, the fabric changes from a cylindrical shape to a flat shape.

[0035] The fabric, which is in a flat state, is conveyed to the automatic cutting mechanism downstream of the conveying mechanism and cut under the pulling force at the feeding end of the conveying mechanism;

[0036] A movable roller is provided above the material outlet of the conveying mechanism. The movable roller presses down freely on the fabric and rotates freely as the fabric is conveyed. When the automatic cutting mechanism completes the cutting action, if it detects that the distance between the movable roller and the conveying surface of the conveying mechanism is less than a set value, it determines that the material segment currently being cut is waste material and prompts the downstream conveying line to transfer the waste material to the waste area.

[0037] The beneficial effects of this invention are as follows:

[0038] This invention features a compact and reasonable structure and is easy to operate. By setting a material straightening component on one side of the feeding end of the conveying mechanism, the fabric is guided and spread out so that the cross-section of the fabric is in a straight line before entering the subsequent conveying and cutting processes. This avoids the fabric entering the cutting process in a twisted shape, thereby enabling precise cutting of tubular fabric, reducing labor costs, improving material utilization, and extending the service life of the cutting equipment.

[0039] Furthermore, the present invention also has the following advantages:

[0040] (1) An internal guide cylinder is provided in the external limiting component on the fixed frame. While the external limiting component supports and limits the internal guide cylinder, it maintains a gap with the internal guide cylinder so that the fabric can be conveyed upward outside the internal guide cylinder, and the fabric is guided and stretched into a cylindrical shape. The naturally hanging fabric is straightened after passing through the internal guide cylinder, and then after passing through the straight guide component, the fabric is stretched into a flat shape, so that the cross section of the fabric is straight and enters between the conveying mechanism and the first pressure roller assembly, which facilitates subsequent stable conveying.

[0041] (2) The fabric is conveyed upward through the straightening assembly, then into the steering roller assembly and then downward to the feed end of the conveying mechanism, so that there is a longitudinal space between the straightening assembly and the conveying mechanism. This allows the fabric, which is in a state of tension, to be flattened and fully straightened into a straight line within a certain conveying space, avoiding swaying during the fabric conveying process and facilitating stable conveying of the conveying mechanism to ensure cutting accuracy.

[0042] (3) The guide roller assembly further straightens the fabric before the feed end of the conveying mechanism and provides a limiting structure to ensure that the fabric does not deviate before entering the conveying mechanism and to ensure cutting accuracy.

[0043] (4) A movable roller that can be raised and lowered is set above the fabric at the discharge end of the conveying mechanism so that the fabric is lifted up during the process of passing through the movable roller and the conveying mechanism. Since the cutting length is related to the step conveying time interval of the conveying mechanism, when the movable roller falls down due to the lack of fabric below within a step conveying time interval, the sensor can remind that the material segment cut this time is waste. The detection mechanism has a simple structure, timely feedback and sensitivity. Attached Figure Description

[0044] Figure 1This is a schematic diagram of the structure of the present invention.

[0045] Figure 2 This is an isometric sectional view of the present invention.

[0046] Figure 3 This is a schematic diagram of the structure of the steering roller assembly and the material handling assembly of the present invention.

[0047] Figure 4 This is a schematic diagram (axonometric sectional view) of the integral assembly of the present invention.

[0048] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle.

[0049] Figure 6 This is a schematic diagram (axonometric sectional view) of the external limiting member and the internal guide cylinder of the present invention.

[0050] Figure 7 This is a schematic diagram of the conveying mechanism and related components of the present invention.

[0051] Figure 8 This is a schematic diagram of the structure of the second pressure roller assembly of the present invention.

[0052] in:

[0053] 1. Steering roller assembly; 11. Steering roller shaft; 12. Steering roller base;

[0054] 2. Material assembly; 21. Straight guide; 211. Guide head; 212. Support rod; 213. Hole position adjusting block; 22. External limiting component; 221. Upper roller; 222. Bracket; 2220. Slot; 223. Screw; 2230. Clip; 224. Lower roller; 225. Guide rod; 23. Fixing frame; 24. Internal guide cylinder; 241. Upper guide cone; 242. Spreading section; 243. Lower guide cone;

[0055] 3. First pressure roller assembly; 31. Fixed rod; 32. First guide shaft; 33. First shaft seat; 34. Fixed roller;

[0056] 4. Guide roller assembly; 41. Guide roller base; 42. Guide roller shaft; 43. First limiting block; 44. Second limiting block;

[0057] 5. Automatic cutting mechanism; 51. Moving frame; 52. Cutting blade; 53. Cylinder;

[0058] 6. Second pressure roller assembly; 61. Second guide shaft; 62. Second shaft seat; 63. Movable roller; 64. Sensor;

[0059] 7. Conveying mechanism; 71. Drive roller; 72. Belt; 73. Motor; 74. Driven roller;

[0060] 8. Frame; 9. Fabric. Detailed Implementation

[0061] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0062] Example 1:

[0063] like Figures 1-2 As shown, the tubular fabric cutting machine of this embodiment includes: an automatic cutting mechanism 5, a conveying mechanism 7, a first pressure roller assembly 3, and a material straightening assembly 2.

[0064] Automatic cutting mechanism 5, used for cutting fabric 9;

[0065] The conveying mechanism 7 is located at the feed inlet of the automatic cutting mechanism 5;

[0066] The first pressure roller assembly 3 is located above the feed end of the conveying mechanism 7. The first pressure roller assembly 3 works in conjunction with the conveying mechanism 7 to provide conveying power.

[0067] The material preparation assembly 2 is fixedly installed on one side of the feed end of the conveying mechanism 7 to guide and spread the fabric 9 so that the cross section of the fabric 9 enters the conveying mechanism 7 and the first pressure roller assembly 3 in a straight line.

[0068] Fabric 9 is cylindrical and has a certain length, and can continuously transport materials that have been cut into segments. The cylindrical cross-section of fabric 9 has a certain degree of elasticity, such as woolen fabric. Figure 2 The dotted line in the middle indicates the conveying direction and position of fabric 9.

[0069] The material straightening assembly 2 opens up from inside the cylindrical fabric 9, reverses the twisted state of the fabric 9 to straighten it, so that the cross section of the fabric 9 enters between the conveying mechanism 7 and the first pressure roller assembly 3 in a straight line, ensuring that the cutting point of the automatic cutting mechanism 5 downstream of the conveying mechanism 7 is flush.

[0070] like Figure 2 As shown, the conveying mechanism 7 includes a motor 73 mounted on the frame 8, and a drive roller 71 and a driven roller 74 rotatably mounted on the frame 8. It also includes a belt 72, which is wrapped around the drive roller 71 and the driven roller 74 and is in a tensioned state. The drive roller 71 is located at the feed end of the conveying mechanism 7, and the driven roller 74 is located at the discharge end of the conveying mechanism 7.

[0071] like Figure 2 , Figure 7As shown, the structure of the first pressure roller assembly 3 includes a first shaft seat 33 and a first guide shaft 32 fixedly installed on the frame 8. The first shaft seat 33 and the first guide shaft 32 are slidably connected. A fixed roller 34 is rotatably installed on the first shaft seat 33. The fixed roller 34 is located above the feed end of the conveying mechanism 7 and corresponds to the drive roller 71. It also includes a fixing rod 31. One end of the fixing rod 31 is connected to the first shaft seat 33, and the other end of the fixing rod 31 is connected to the upper end of the first guide shaft 32. The fixing rod 31 is used to adjust the distance between the fixed roller 34 and the conveying surface of the conveying mechanism 7 to a suitable position and fix it.

[0072] The first pressure roller assembly 3 presses the fabric 9 down onto the conveying surface of the conveying mechanism 7. The fixed roller 34 rolls as the conveying surface of the conveying mechanism 7 moves backward. The first pressure roller assembly 3 and the conveying surface of the conveying mechanism 7 simultaneously apply frictional force from the upper and lower planes of the fabric 9, thereby applying tension to the fabric 9, so that the fabric 9 can smoothly pass through the material straightening assembly 2 and enter between the conveying mechanism 7 and the first pressure roller assembly 3, and continue to be conveyed downward to the automatic cutting mechanism 5.

[0073] The automatic cutting mechanism 5 includes a movable frame 51 that is slidably mounted on the frame 8. A cutting blade 52 is mounted on the movable frame 51. A cylinder 53 is also fixedly mounted on the frame 8. The output end of the cylinder 53 is connected to the movable frame 51 for transmission, driving the movable frame 51 to rise and fall, thereby realizing the automatic cutting function.

[0074] By setting a material straightening component 2 on one side of the feed end of the conveying mechanism 7, the fabric 9 is guided and spread out so that the cross section of the fabric 9 is in a straight line before entering the subsequent conveying and cutting process. This avoids the fabric 9 entering the cutting process in a twisted shape, thereby enabling precise cutting of tubular fabric, reducing labor costs, improving material utilization and the service life of the cutting equipment.

[0075] like Figures 2-6 As shown, the structure of the material assembly 2 includes a fixing frame 23, an internal guide cylinder 24, an external limiting member 22, and an internal straight guide member 21.

[0076] The fixing frame 23 is fixedly installed on the frame 8 of the conveying mechanism 7;

[0077] The outer wall of the inner guide cylinder 24 matches the inner cylinder size of the fabric 9, and is used to stretch the fabric 9 so that the fabric 9 is in a cylindrical shape. The central axis of the inner guide cylinder 24 is set vertically.

[0078] An external limiting member 22 is provided on a fixed frame 23 to limit the internal guide cylinder 24 horizontally and vertically from the outer periphery of the internal guide cylinder 24. There is a gap between the external limiting member 22 and the internal guide cylinder 24, which is used for the passage of the fabric 9.

[0079] An internal guide 21 is positioned above the internal guide cylinder 24 and is used to open the fabric 9 from the inside, so that the cross-section of the fabric 9 is flat.

[0080] An internal guide cylinder 24 is provided in the external limiting member 22 on the fixed frame 23. While supporting and limiting the internal guide cylinder 24, the external limiting member 22 maintains a gap with the internal guide cylinder 24, so that the fabric 9 can be wrapped around the outside of the internal guide cylinder 24 and conveyed upward. The fabric 9 is guided and stretched into a cylindrical shape, so that the naturally hanging fabric 9 is straightened after passing through the internal guide cylinder 24. After passing through the straight guide member 21, the fabric 9 is stretched into a flat shape, so that the cross section of the fabric 9 is in a straight line and enters between the conveying mechanism 7 and the first pressure roller assembly 3, which facilitates subsequent stable conveying.

[0081] During the conveying process of the fabric 9 to the conveying mechanism 7, the first pressure roller assembly 3 and the conveying mechanism 7 provide tension. The combined effect of the external limiting member 22 limiting the internal guide cylinder 24 and the gravity of the internal guide cylinder 24 on the sliding fabric 9 provides tension during the conveying process of the fabric 9, thereby ensuring the stability of the straight cross section of the fabric 9.

[0082] like Figure 4 , Figure 6 As shown, the structure of the internal guide cylinder 24 is as follows: it includes a spreading section 242, the outer wall surface of which is a cylindrical surface with a diameter larger than that of the fabric 9 in its natural state; it also includes a lower guide cone surface 243 located at the lower end of the spreading section 242 and an upper guide cone surface 241 located at the upper end of the spreading section 242; the lower guide cone surface 243 is an inverted cone surface used to guide the fabric 9, causing the twisted fabric 9 to twist in the opposite direction to a straightened state, and the upper guide cone surface 241 is used to cause the fabric 9 to shrink to its natural state before passing through the straight guide member 21.

[0083] The diameter of the cylindrical surface on the expansion section 242 is 1.1 to 1.2 times the diameter of the fabric 9 in its natural state. The lower end diameter of the lower guide cone 243 is less than or equal to the diameter of the fabric 9 in its natural state, and the upper end diameter of the upper guide cone 241 is less than or equal to the diameter of the fabric 9 in its natural state.

[0084] like Figures 3-6As shown, there are multiple external limiting members 22, specifically three or more. The external limiting members 22 are evenly distributed in an array around the central axis of the internal guide cylinder 24. The structure of each external limiting member 22 is as follows: it includes a bracket 222 connected to the fixing frame 23; the lower end of the bracket 222 is provided with a lower roller 224 that cooperates with the lower end of the internal guide cylinder 24, and multiple lower rollers 224 support the internal guide cylinder 24 from the lower outer periphery of the internal guide cylinder 24, with the aforementioned gap between the lower rollers 224 and the internal guide cylinder 24; the upper end of the bracket 222 is provided with an upper roller 221 that cooperates with the upper end of the internal guide cylinder 24, and multiple upper rollers 221 limit the vertical height of the internal guide cylinder 24 from the upper outer periphery of the internal guide cylinder 24, with the aforementioned gap between the upper rollers 221 and the internal guide cylinder 24.

[0085] The aforementioned gap refers to the thickness of the fabric 9 filling the space between the outer limiting member 22 and the inner guide cylinder 24 when the fabric 9 passes through the outside of the inner guide cylinder 24. However, when there is no fabric 9, i.e. when the tubular fabric cutter is not working, the inner guide cylinder 24 contacts the lower roller 224 under the action of gravity.

[0086] like Figure 6 As shown, in the above structure of the external limiting member 22, the lower roller 224 cooperates with the lower guide cone surface 243 on the inner guide cylinder 24, and the upper roller 221 cooperates with the upper guide cone surface 241 on the inner guide cylinder 24. Thus, the external limiting member 22 limits the inner guide cylinder 24 in the horizontal and vertical directions from the outer periphery of the inner guide cylinder 24.

[0087] Preferably, the diameter of the cross-section where the support point of the lower roller 224 corresponds to the inner guide cylinder 24 is larger than the diameter of the fabric 9 in its natural state, and the support point is located on the lower guide cone surface 243. When the lower guide cone surface 243 moves relative to the fabric 9, the lower guide cone surface 243 guides and expands the fabric 9 from the inside until it is larger than the diameter of the fabric 9 in its natural state. During this process, the naturally drooping fabric 9 is straightened, the lower roller 224 assists the fabric 9 to slide upward, and at the same time, it positions the relative position of the fabric 9 and the inner guide cylinder 24 from multiple points on the outside of the fabric 9, which has a cylindrical cross-section, to ensure the consistency of the texture direction of the fabric 9 after passing through the expanded section 242.

[0088] In another embodiment, to facilitate the disassembly and installation of the external limiting member 22 and the internal guide cylinder 24, as well as the adjustment of the gap, the installation structure of the external limiting member 22 is further optimized. For example... Figure 5 , Figure 6As shown, each external limiting member 22 also includes a screw 223 threadedly connected to the fixing frame 23. The end of the screw 223 is detachably connected to the bracket 222. It also includes a guide rod 225, one end of which is threadedly connected to the bracket 222, and the other end of which is slidably connected to the fixing frame 23. There are two guide rods 225, located on the upper and lower sides of the screw 223 respectively.

[0089] like Figure 5 As shown, the detachable connection structure between the end of the screw 223 and the bracket 222 includes a slot 2220 on the bracket 222 and a locking head 2230 at the end of the screw 223. The slot 2220 is horizontal in length and extends through the bracket 222 at both ends. The slot 2220 has a T-shaped cross-section. The locking head 2230 is a circular boss structure that mates with the slot 2220. After the locking head 2230 slides into the bottom of the slot 2220 from one end, and the guide rod 225 is installed in place, the screw 223 is detachably connected to the bracket 222. The distance between the bracket 222 and the internal guide cylinder 24 can be adjusted by adjusting the position of the screw 223 relative to the fixed frame 23, thereby adjusting the aforementioned gap. The horizontal position of the internal guide cylinder 24 can be adjusted by adjusting the relative position of each bracket 222.

[0090] like Figure 4 As shown, the structure of the straight guide 21 is as follows: it includes symmetrically arranged support rods 212, one end of which is fixedly connected to the inner guide cylinder 24, and the other end of which is located at the upper end of the inner guide cylinder 24 and is provided with a guide head 211. The two guide heads 211 open the fabric 9 from the inside, making the cross-section of the fabric 9 flat. The guide head 211 can be a roller rotatably mounted on the upper end of the support rod 212.

[0091] When the flat-section fabric 9 enters directly between the conveying mechanism 7 and the first pressure roller assembly 3, the plane containing the center plane of the two support rods 212 is coplanar with the vertical tangent of the conveying surface at the drive roller 71.

[0092] An adjustable hole block 213 is detachably installed inside the internal guide cylinder 24. The adjustable hole block 213 is provided with multiple mounting holes. The support rod 212 is detachably connected to the mounting holes. By selecting different mounting holes, the distance between the two support rods 212 can be adjusted, thereby adjusting the degree to which the fabric 9 is stretched.

[0093] Example 2:

[0094] like Figures 1-4As shown, based on Embodiment 1, the tubular fabric cutting machine of this embodiment also includes a steering roller assembly 1. The steering roller assembly 1 is located above the feeding end of the conveying mechanism 7 and above the material straightening assembly 2. The steering roller assembly 1 is used to guide the fabric 9 passing through the material straightening assembly 2 and change the conveying direction of the fabric 9 so that the cross-section of the fabric 9 is in a straight line before entering between the conveying mechanism 7 and the first pressure roller assembly 3.

[0095] One specific implementation method, such as Figure 1 As shown, the steering roller assembly 1 is located between the material forming assembly 2 and the guide roller assembly 4.

[0096] For example, the structure of the steering roller assembly 1 includes a steering roller base 12 fixedly connected to the frame 8, and a steering roller shaft 11 rotatably mounted on the steering roller base 12. The vertical tangent of the steering roller shaft 11 is coplanar with the plane containing the center planes of the two support rods 212. The number of steering roller shafts 11 can be two, arranged side by side in the horizontal direction.

[0097] Fabric 9 is conveyed upward through the straightening assembly 2, enters the steering roller assembly 1, and is then conveyed downward to the feed end of the conveying mechanism 7. This creates a longitudinal space between the straightening assembly 2 and the conveying mechanism 7, allowing the fabric 9, which is in a state of tension, to be flattened and fully straightened into a straight line within a certain conveying space. This prevents the fabric 9 from swaying during the conveying process and facilitates stable conveying of the conveying mechanism 7 to ensure cutting accuracy.

[0098] The distance between the two support rods 212 allows the fabric 9 to be stretched to its natural state or to a certain extent with tensile deformation (the width of the straight line is slightly larger than the natural width), preferably with a certain tensile deformation, so that the straight line state of the fabric 9 is more stable when it enters the conveying mechanism 7.

[0099] Furthermore, such as Figure 2 , Figure 7 As shown, a guide roller assembly 4 is provided between the feed end of the steering roller assembly 1 and the conveying mechanism 7. The structure of the guide roller assembly 4 includes a guide roller base 41 fixedly installed on the frame 8 of the conveying mechanism 7, a guide roller shaft 42 rotatably installed on the guide roller base 41, and a first limiting block 43 and a second limiting block 44 spaced apart along the axial direction on the guide roller shaft 42. The first limiting block 43 and the second limiting block 44 are used to guide and limit the fabric 9 with a straight cross section.

[0100] The guide roller assembly 1 further straightens the fabric 9 before the feed end of the conveying mechanism 7 and provides a limiting structure to ensure that the fabric 9 does not deviate before entering the conveying mechanism 7, thus ensuring cutting accuracy.

[0101] Example 3:

[0102] During the conveying and cutting process, the end of the entire fabric 9 may be insufficient in length. Usually, the insufficient length section is removed by manual inspection, which cannot quickly and timely collect the waste material.

[0103] Based on the above embodiments, such as Figure 7 , Figure 8 As shown, this embodiment also includes a second pressure roller assembly 6. The structure of the second pressure roller assembly 6 includes a movable roller 63 located above the discharge end of the conveying mechanism 7 and a second shaft seat 62. The movable roller 63 is rotatably mounted on the second shaft seat 62. A second guide shaft 61 is fixedly mounted on the frame 8 of the conveying mechanism 7. The second shaft seat 62 is slidably mounted on the second guide shaft 61. The movable roller 63 is located above the fabric 9 and is supported by the fabric 9. It also includes a sensor 64 for detecting the height of the second shaft seat 62.

[0104] The movable roller 63 can be vertically raised and lowered along the second guide shaft 61 under the action of external force. The sensor 64 is installed on the frame 8 and can be a distance sensor for detecting the height position of the second shaft seat 62. The sensor 64 is triggered when the movable roller 63 falls directly on the conveying surface of the conveying mechanism 7. At this time, the material section conveyed to the downstream of the conveying mechanism 7 is waste material.

[0105] A freely lifting movable roller 63 is installed above the fabric 9 at the discharge end of the conveying mechanism 7, so that the fabric 9 is lifted up during the process of passing through the movable roller 63 and the conveying mechanism 7. Since the cutting length is related to the step conveying time interval of the conveying mechanism 7, when the movable roller 63 falls down because there is no fabric 9 below it within a step conveying time interval, the sensor 64 can remind that the material segment cut this time is waste material. The detection mechanism has a simple structure, timely feedback and sensitivity.

[0106] Example 4:

[0107] like Figure 2 , Figures 7-8 As shown, the tubular fabric cutting and conveying method of this embodiment, utilizing the tubular fabric cutter of Embodiment 3, includes the following steps:

[0108] The material straightening component 2 guides and expands the fabric 9 into a cylindrical shape from inside the fabric 9, and conveys the fabric 9 from bottom to top, so that the fabric 9, which is in a twisted state at the lower end of the material straightening component 2, is twisted in the opposite direction to straighten it.

[0109] After the straightened fabric 9 passes the top of the straightening assembly 2, the fabric 9 changes from a cylindrical shape to a flat shape.

[0110] The fabric 9, which is in a flat state, is conveyed to the automatic cutting mechanism 5 downstream of the conveying mechanism 7 and cut under the pulling force at the feeding end of the conveying mechanism 7;

[0111] A movable roller 63 is located above the discharge port of the conveying mechanism 7. The movable roller 63 presses freely down on the fabric 9 and rotates freely as the fabric 9 is conveyed. When the automatic cutting mechanism 5 completes the cutting action, if it detects that the distance between the movable roller 63 and the conveying surface of the conveying mechanism 7 is less than the set value, it determines that the material segment currently being cut is waste material and prompts the downstream conveying line to transfer the waste material to the waste area.

[0112] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A cylindrical fabric blanking machine characterized by: include: Automatic cutting mechanism (5) for cutting the fabric (9); A conveying mechanism (7) is provided at the feed inlet of the automatic cutting mechanism (5); The first pressure roller assembly (3) is disposed above the feed end of the conveying mechanism (7), and the first pressure roller assembly (3) cooperates with the conveying mechanism (7) to provide conveying power; The material preparation assembly (2) is fixedly installed on one side of the feed end of the conveying mechanism (7) to guide and spread the fabric (9) so that the cross section of the fabric (9) enters between the conveying mechanism (7) and the first pressure roller assembly (3) in a straight line; The structure of the material assembly (2) includes: A fixed frame (23) is fixedly installed on the frame (8) of the conveying mechanism (7); An inner guide cylinder (24) has an outer wall that matches the inner cylinder size of the fabric (9) and is used to stretch the fabric (9) so that the fabric (9) is cylindrical. The central axis of the inner guide cylinder (24) is arranged vertically. An external limiting member (22) is provided on the fixing frame (23) to limit the internal guide cylinder (24) horizontally and vertically from the outer periphery of the internal guide cylinder (24). There is a gap between the external limiting member (22) and the internal guide cylinder (24) for the fabric (9) to pass through. An internal guide (21) is disposed above the internal guide cylinder (24) and is used to open the fabric (9) from the inside of the fabric (9) so that the cross section of the fabric (9) is flat. The internal guide component (21) includes symmetrically arranged support rods (212), and a hole adjustment block (213) is detachably installed inside the internal guide cylinder (24). The hole adjustment block (213) is provided with multiple mounting holes, and the support rods (212) are detachably connected to the mounting holes.

2. The curtain fabric cutting machine according to claim 1, wherein: The structure of the internal guide cylinder (24) is as follows: Includes a stretching section (242), the outer wall surface of which is a cylindrical surface, and the diameter of the cylindrical surface is larger than the diameter of the fabric (9) in its natural state; It also includes a lower guide cone (243) located at the lower end of the spreading section (242) and an upper guide cone (241) located at the upper end of the spreading section (242). The lower guide cone (243) is an inverted cone surface, used to guide the fabric (9) so that the twisted fabric (9) is twisted in the opposite direction to straighten out. The upper guide cone (241) is used to shrink the fabric (9) to a natural state before it passes through the straight guide (21).

3. The tubular fabric cutting machine as described in claim 1, characterized in that: The number of external limiting members (22) is multiple, and they are evenly distributed in an array around the central axis of the internal guide cylinder (24). The structure of each external limiting member (22) is as follows: Includes a bracket (222) connected to the fixed frame (23); The lower end of the bracket (222) is provided with a lower roller (224) that cooperates with the lower end of the inner guide cylinder (24). Multiple lower rollers (224) support the inner guide cylinder (24) from the outer periphery of the lower end of the inner guide cylinder (24). There is a gap between the lower rollers (224) and the inner guide cylinder (24). The upper end of the bracket (222) is provided with an upper roller (221) that cooperates with the upper end of the inner guide cylinder (24). Multiple upper rollers (221) restrict the vertical height of the inner guide cylinder (24) from the outer periphery of the upper end of the inner guide cylinder (24). There is a gap between the upper roller (221) and the inner guide cylinder (24).

4. The tubular fabric cutting machine as described in claim 3, characterized in that: Each external limiting member (22) also includes a screw (223) threadedly connected to the fixing frame (23), the end of the screw (223) being detachably connected to the bracket (222), and a guide rod (225), one end of the guide rod (225) being threadedly connected to the bracket (222), and the other end of the guide rod (225) being slidably connected to the fixing frame (23).

5. The tubular fabric cutting machine as described in claim 1, characterized in that: The structure of the single-line guide (21) is as follows: The device includes symmetrically arranged support rods (212), one end of which is fixedly connected to the inner guide cylinder (24), and the other end of which is located at the upper end of the inner guide cylinder (24) and is provided with guide heads (211). The two guide heads (211) open the fabric (9) from the inside, so that the cross section of the fabric (9) is flat.

6. The tubular fabric cutting machine as described in claim 1, characterized in that: It also includes a steering roller assembly (1), which is located above the feed end of the conveying mechanism (7) and above the material straightening assembly (2). The steering roller assembly (1) is used to guide the fabric (9) passing through the material straightening assembly (2) and change the conveying direction of the fabric (9) so that the cross section of the fabric (9) enters between the conveying mechanism (7) and the first pressure roller assembly (3) in a straight line.

7. The tubular fabric cutting machine as described in claim 6, characterized in that: A guide roller assembly (4) is provided between the feed end of the steering roller assembly (1) and the conveying mechanism (7). The structure of the guide roller assembly (4) includes a guide roller base (41) fixedly installed on the frame (8) of the conveying mechanism (7). A guide roller shaft (42) is rotatably installed on the guide roller base (41). A first limiting block (43) and a second limiting block (44) are provided axially on the guide roller shaft (42). The first limiting block (43) and the second limiting block (44) are used to guide and limit the fabric (9) with a straight cross section.

8. The tubular fabric cutting machine as described in claim 1, characterized in that: It also includes a second pressure roller assembly (6), the structure of which includes a movable roller (63) located above the discharge end of the conveying mechanism (7) and a second shaft seat (62). The movable roller (63) is rotatably mounted on the second shaft seat (62). A second guide shaft (61) is fixedly mounted on the frame (8) of the conveying mechanism (7). The second shaft seat (62) is slidably mounted on the second guide shaft (61). The movable roller (63) is located above the fabric (9) and is supported by the fabric (9). It also includes a sensor (64) for detecting the height of the second shaft seat (62).

9. A method for cutting and conveying tubular fabric, characterized in that: Using the tubular fabric cutter as described in any one of claims 1-8, the method includes the following steps: The fabric (9) is guided and stretched into a cylindrical shape from inside the fabric (9) using the material straightening assembly (2), and the fabric (9) is conveyed from bottom to top, so that the fabric (9) which is in a twisted state at the lower end of the material straightening assembly (2) is twisted in the opposite direction to straighten it. After the straightened fabric (9) passes the upper end of the straightening assembly (2), the fabric (9) changes from a cylindrical shape to a flat shape. The fabric (9) in a flat state is conveyed to the automatic cutting mechanism (5) downstream of the conveying mechanism (7) under the pulling force of the feeding end of the conveying mechanism (7) and is cut; An active roller (63) is provided above the discharge port of the conveying mechanism (7). The active roller (63) presses freely down on the fabric (9) and rotates freely with the conveying of the fabric (9). When the automatic cutting mechanism (5) completes the cutting action, if the distance between the active roller (63) and the conveying surface of the conveying mechanism (7) is less than the set value, it is determined that the material segment currently being cut is waste material, and the downstream conveying line is prompted to transfer the waste material to the waste area.

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