Multi-head quilting machine with adjustable spacing

Abstract

The invention relates to a spacing-adjustable multi-machine-head quilting machine which comprises a machine frame, a plurality of lower machine heads, a plurality of upper machine heads, a deviation rectifying assembly and a conveying assembly, the lower machine heads and the upper machine heads are in one-to-one correspondence, and the lower machine heads and the upper machine heads are synchronously arranged at the two ends of the machine frame in a sliding mode respectively; the deviation rectifying assembly and the conveying assembly are installed on the two sides of the rack correspondingly, the deviation rectifying assembly comprises a first deviation rectifying base, a second deviation rectifying base and a deviation rectifying guide roller, the first deviation rectifying base and the second deviation rectifying base are installed at the two ends of the rack correspondingly, and the two ends of the deviation rectifying guide roller are connected to the first deviation rectifying base and the second deviation rectifying base correspondingly in a swinging mode; and the cloth is conveyed to the conveying assembly after being rectified by the rectifying guide roller. According to the multi-machine-head quilting machine, the lower machine heads and the upper machine heads are synchronously arranged on the rack in a sliding mode, so that the distance between the adjacent lower machine heads and the adjacent upper machine heads is adjusted, and cloth of different widths can be produced at the same time; the two ends of the deviation rectifying guide roller are connected to the first deviation rectifying base and the second deviation rectifying base in a swinging mode, deviation rectifying of the cloth is achieved, and the machining quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of textile sewing equipment technology, and in particular to a multi-head quilting machine with adjustable spacing. Background Technology

[0002] A quilting machine is a machine that uses a row of needles to sew and fix textiles with interlayers. For example, when producing mattress trim, a quilting machine is used to sew the quilted product into a straight line, and then the quilted product is cut into strips. For example, Chinese patent CN222205666U discloses a novel computerized shuttleless multi-needle quilting machine for mattress quilting strips, including a frame, a quilting pattern mechanism, a material winding device, and a material feeding device. The frame has a material feeding device and a material winding device on both sides. The quilting pattern mechanism is movable on the frame along the X-axis. Under the pull of the Y-axis roller, the quilting pad composed of the material, fabric, and base material, which moves between the needles and hooks symmetrically arranged above and below the quilting pattern mechanism, moves along the direction of the material winding device. On the frame on one side of the quilting pattern mechanism, a straight-line sewing and slitting mechanism is arranged in parallel. The straight-line sewing and slitting mechanism sews the quilting pad processed by the quilting pattern mechanism into straight lines and cuts the quilting pad into strips. The processed strips are wound onto the material winding device by the power on the material winding device and the take-up roller of the straight-line sewing and slitting mechanism. However, under the pull of the Y-axis roller, the quilting pad will inevitably deviate during the movement of the winding device, which will directly affect the processing quality of the product. Summary of the Invention

[0003] Therefore, it is necessary to provide a multi-head quilting machine with adjustable spacing to address the above problems.

[0004] An adjustable-spacing multi-head quilting machine includes a frame, a lower head, an upper head, a fabric correction component, and a conveying component. Multiple lower and upper heads are provided, each corresponding to the previous one. Each lower and upper head is synchronously slidably mounted at both ends of the frame. The fabric correction component and the conveying component are respectively installed on both sides of the frame. The fabric correction component includes a first correction seat, a second correction seat, and a correction guide roller. The first and second correction seats are respectively installed at both ends of the frame, and the two ends of the correction guide roller are oscillatingly connected to the first and second correction seats. The fabric is corrected by the correction guide roller and then conveyed to the conveying component.

[0005] In one embodiment, the first correction seat is inclined, and the second correction seat is symmetrically arranged with the first correction seat about the axis of symmetry of the frame.

[0006] In one embodiment, the correction assembly further includes a first correction slide plate, a first correction block, a second correction slide plate, and a second correction block. The first correction slide plate is slidably disposed on the first correction seat, and the first correction block is horizontally rotatably connected to the first correction slide plate. The second correction slide plate is slidably disposed on the second correction seat, and the second correction block is horizontally rotatably connected to the second correction slide plate. The two ends of the correction guide roller are respectively rotatably connected to the first correction block and the second correction block.

[0007] In one embodiment, the correction assembly further includes a correction rod, a correction sensor, and a correction power element. One end of the correction rod is mounted on the first correction seat, and the other end extends along the arrangement direction of the upper machine head. The correction sensor is slidably mounted on the correction rod and is used to sense the baseline of the fabric. The correction power element is mounted on the first correction seat and is used to drive the first correction slide plate to slide.

[0008] In one embodiment, the conveying assembly includes a conveying support plate, a driving roller, a conveying power element, a swing plate, a driven roller, a oscillating power element, and a discharge roller. There are two of each of the conveying support plate, swing plate, and oscillating power element, and they correspond one-to-one. The two conveying support plates are respectively installed at both ends of the frame. The two ends of the driving roller are rotatably connected to the two conveying support plates. The conveying power element is installed on one of the conveying support plates and is used to drive the driving roller to rotate. One end of the swing plate is rotatably connected to the conveying support plate, and the two ends of the driven roller are rotatably connected to the two swing plates. One end of the oscillating power element is pivotally connected to the conveying support plate, and the other end is pivotally connected to the swing plate. The oscillating power element is used to drive the swing plate to rotate. The two ends of the discharge roller are pivotally connected to the two conveying support plates.

[0009] In one embodiment, a buffer assembly is further included, comprising a support frame, a conveyor roller, a buffer slide plate, a buffer roller, a first position sensor, and a second position sensor. The support frame is mounted on the side of the frame near the correction assembly, and the two ends of the conveyor roller are respectively pivotally connected to the two ends of the support frame. There are two buffer slide plates, each sliding on one end of the support frame. The two ends of the buffer roller are respectively pivotally connected to the two buffer slide plates. The first position sensor and the second position sensor are respectively mounted on the two ends of the support frame, and both the first position sensor and the second position sensor are used to sense the buffer slide plates.

[0010] In one embodiment, the buffer assembly further includes a limit switch, a buffer rack, and a buffer gear. The limit switch is installed at the end of the second position sensor away from the first position sensor, and the buffer slide is used to trigger the limit switch. There are two buffer racks and two buffer gears, which correspond one-to-one. The two buffer racks are respectively installed at both ends of the support frame, and the two buffer gears are respectively installed at both ends of the buffer roller. The buffer gears mesh with the buffer racks.

[0011] In one embodiment, the assembly further includes a bottom blade assembly and a top blade assembly, each having multiple bottom blade assemblies and a one-to-one correspondence; the bottom blade assembly includes a blade sleeve and a cutting power element, the blade sleeve being rotatably connected to the lower machine head, the cutting power element being installed on the lower machine head, and the cutting power element being used to drive the blade sleeve to rotate; the top blade assembly includes a lifting power element, a support, and a roller cutter, the lifting power element being installed on the upper machine head, the lifting power element being used to drive the support to lift, the roller cutter being rotatably connected to the support, the roller cutter being arranged corresponding to the blade sleeve, and the blade sleeve being used to drive the roller cutter to rotate.

[0012] In one embodiment, the lower head includes a first slide plate, a first lateral movement force element, a fixed base, and a needle plate. The first slide plate is slidably mounted on the frame, the first lateral movement force element is mounted on the first slide plate, and the fixed base is mounted on the first slide plate. The needle plate is mounted on the fixed base. The needle plate has a through hole to accommodate the blade sleeve. The blade sleeve is rotatably connected to the fixed base, and the edge-cutting power element is mounted on the fixed base. The bottom blade assembly also includes a blade shaft and a limiting sleeve. The blade shaft is rotatably connected to the fixed base, and the edge-cutting power element is used to drive the blade shaft to rotate. The limiting sleeve is mounted on the blade shaft, and the blade sleeve is mounted on the limiting sleeve.

[0013] In one embodiment, the upper machine head includes a second slide plate, a second lateral movement force element, a housing, and a mounting plate. The second slide plate is slidably mounted on the frame, the second lateral movement force element is mounted on the second slide plate, and the housing and the mounting plate are respectively mounted on both sides of the second slide plate. The lifting power element is mounted on the mounting plate. The top cutter assembly also includes a protective cover, which is mounted on the support and covers the roller cutter.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The adjustable-spacing multi-head quilting machine of the present invention adjusts the spacing between adjacent lower and upper heads by synchronously sliding the lower and upper heads on the frame, thereby enabling the simultaneous production of fabrics of different widths. By swinging the two ends of the correction guide rollers to the first and second correction seats respectively, the fabric is corrected, ensuring that the fabric is accurately positioned when entering the lower and upper heads for processing, thus guaranteeing the processing quality of the product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of an adjustable-spacing multi-head quilting machine according to an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the working state of a multi-head quilting machine with adjustable spacing. Figure 3 for Figure 1 The diagram shows the structure of a multi-head quilting machine with adjustable spacing; however, the buffer assembly is not shown. Figure 4 for Figure 3 Another structural diagram; Figure 5 for Figure 3 Structural diagram of the middle frame, upper head, lower head, bottom cutter assembly, and top cutter assembly; Figure 6 for Figure 5 Another structural diagram, in which the frame is not shown; Figure 7 for Figure 3 A schematic diagram of the structure of the mid-track correction component; Figure 8 for Figure 7 A schematic diagram of the correction principle of the correction component shown. Figure 9 for Figure 4 Enlarged view of center circle A; Figure 10 for Figure 6 A schematic diagram of the structure of the fixed base, needle plate, thread cutting power element and bottom knife assembly.

[0016] The meanings of the numbers in the attached diagram are as follows: 100. Adjustable spacing multi-head quilting machine; 10. Frame; 11. Frame body; 12. First rack; 13. Second rack; 20. Lower head; 21. First slide plate; 22. First lateral movement force element; 23. Fixed base; 24. Needle plate; 240. Through hole; 25. First gear; 26. Thread cutting power element; 30. Upper head; 31. Second slide plate; 32. Second lateral movement force element; 33. Housing; 34. Mounting plate; 35. Second gear; 36. Needle; 37. Rotation power element; 40. Correction assembly; 41. First correction seat; 42. Second correction seat; 43. Correction guide roller; 44. First correction slide plate; 45. First correction block; 46. Second correction slide plate; 47. Second correction block; 48. Correction rod; 49. Correction sensor; 49a. Correction power element; 50. Conveying assembly; 51. Conveying support plate; 52. Driven roller; 53. Conveying power element; 54. Swing plate; 55. Driven roller; 56. Swinging power element; 57. Discharge roller; 60. Buffer assembly; 61. Support frame; 62. Conveyor roller; 63. Buffer slide plate; 64. Buffer roller; 65. First position sensor; 66. Second position sensor; 67. Limit switch; 68. Buffer rack; 69. Guide roller; 70. Bottom knife assembly; 71. Knife sleeve; 72. Edge cutting power element; 73. Knife shaft; 74. Limit sleeve; 80. Top knife assembly; 81. Lifting power element; 82. Support; 83. Roller cutter; 84. Protective cover; 90. Fabric. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Please refer to Figures 1 to 10An adjustable-spacing multi-head quilting machine 100 according to one embodiment of the invention includes a frame 10, a lower head 20, an upper head 30, a correction assembly 40, and a conveying assembly 50. Multiple lower heads 20 and upper heads 30 are provided, and each lower head 20 and each upper head 30 is synchronously slidably mounted at both ends of the frame 10. The correction assembly 40 and the conveying assembly 50 are respectively installed on both sides of the frame 10. The correction assembly 40 includes a first correction seat 41, a second correction seat 42, and a correction guide roller 43. The first correction seat 41 and the second correction seat 42 are respectively installed at both ends of the frame 10, and the two ends of the correction guide roller 43 are oscillatingly connected to the first correction seat 41 and the second correction seat 42. Fabric 90 is corrected by the correction guide roller 43 and then conveyed to the conveying assembly 50. In this embodiment, the adjustable-spacing multi-head quilting machine 100 allows the lower head 20 and upper head 30 to be synchronously slidably mounted on the frame 10, thereby adjusting the spacing between adjacent lower heads 20 and adjacent upper heads 30, enabling the simultaneous production of fabrics 90 of different widths. The two ends of the correction guide roller 43 are respectively oscillating and connected to the first correction seat 41 and the second correction seat 42 to correct the deviation of the fabric 90, ensuring that the fabric 90 is accurately positioned when entering the lower head 20 and the upper head 30 for processing, thus guaranteeing the processing quality of the product.

[0024] like Figure 1 , Figure 3 and Figure 5 As shown, in this embodiment, the frame 10 includes a frame body 11, a first rack 12, and a second rack 13. The first rack 12 and the second rack 13 are respectively installed at both ends of the frame body 11. There are multiple lower machine heads 20 and upper machine heads 30, and they correspond one-to-one. The lower machine heads 20 and upper machine heads 30 cooperate to process the fabric 90. Each lower machine head 20 and each upper machine head 30 are synchronously slidable at both ends of the frame 10 so as to adjust the distance between adjacent lower machine heads 20 and adjacent upper machine heads 30, thereby enabling the simultaneous production of fabrics 90 of different widths.

[0025] Please refer to them together. Figure 3 , Figure 5 and Figure 6The lower machine head 20 includes a first sliding plate 21, a first lateral movement force element 22, a fixed base 23, and a needle plate 24. The first sliding plate 21 is slidably mounted on the frame 10, the first lateral movement force element 22 is mounted on the first sliding plate 21, and the fixed base 23 is mounted on the first sliding plate 21. The needle plate 24 is mounted on the fixed base 23 and has a through hole 240. The needle plate 24 is used to support the fabric 90. Optionally, the lower machine head 20 also includes a first gear 25 mounted on the first lateral movement force element 22. The first gear 25 meshes with the first rack 12, thereby driving the first sliding plate 21 to slide on the frame 11. Further, the lower machine head 20 also includes a bottom hook (not shown) and a thread-cutting power element 26. The bottom hook is rotatably connected to the fixed base 23, and the thread-cutting power element 26 is mounted on the fixed base 23. The thread-cutting power element 26 is used to drive the bottom hook to rotate. This is the prior art.

[0026] Please check again. Figure 3 , Figure 5 and Figure 6 The upper sewing head 30 includes a second sliding plate 31, a second lateral movement force element 32, a housing 33, and a mounting plate 34. The second sliding plate 31 is slidably mounted on the frame 10, and the second lateral movement force element 32 is mounted on the second sliding plate 31. The housing 33 and the mounting plate 34 are respectively mounted on both sides of the second sliding plate 31. Optionally, the upper sewing head 30 also includes a second gear 35 mounted on the second lateral movement force element 32. The second gear 35 meshes with the second rack 13, thereby driving the second sliding plate 31 to slide on the frame 11. Further, the upper sewing head 30 also includes a needle 36 and a rotational power element 37. The needle 36 is slidably mounted on the housing 33. The needle 36 cooperates with the hook to sew the fabric 90. Optionally, the needle 36 cooperates with the hook to sew a straight line to achieve the hem. The rotational power element 37 is mounted on the housing 33 and is used to drive the needle 36 to slide. This is prior art.

[0027] like Figure 3 Diagram and Figure 8As shown, the correction assembly 40 and the conveying assembly 50 are respectively installed on both sides of the frame 10. The correction assembly 40 includes a first correction seat 41, a second correction seat 42 and a correction guide roller 43. The first correction seat 41 and the second correction seat 42 are respectively installed at both ends of the frame 10. The two ends of the correction guide roller 43 are respectively oscillatingly connected to the first correction seat 41 and the second correction seat 42. The fabric 90 is corrected by the correction guide roller 43 and then conveyed to the conveying assembly 50. Optionally, the first correction seat 41 is inclined, and the second correction seat 42 is symmetrically arranged with the first correction seat 41 about the axis of symmetry of the frame 10. When the end of the correction guide roller 43 connected to the first correction seat 41 slides towards the second correction seat 42, the other end of the correction guide roller 43 connected to the second correction seat 42 slides away from the first correction seat 41. Similarly, when the end of the correction guide roller 43 connected to the first correction seat 41 slides away from the second correction seat 42, the other end of the correction guide roller 43 connected to the second correction seat 42 slides towards the first correction seat 41. That is, the two ends of the correction guide roller 43 slide in opposite directions. Therefore, the correction guide roller 43 tilts and swings in the horizontal direction, thereby correcting the fabric 90.

[0028] like Figure 7 As shown, the correction assembly 40 further includes a first correction slide plate 44, a first correction block 45, a second correction slide plate 46, and a second correction block 47. The first correction slide plate 44 is slidably disposed on the first correction seat 41, and the first correction block 45 is horizontally rotatably connected to the first correction slide plate 44. The second correction slide plate 46 is slidably disposed on the second correction seat 42, and the second correction block 47 is horizontally rotatably connected to the second correction slide plate 46. The two ends of the correction guide roller 43 are respectively rotatably connected to the first correction block 45 and the second correction block 47. The correction assembly 40 also includes a first bearing (not shown), a first correction shaft (not labeled), a second bearing (not shown), and a second correction shaft (not labeled). The first bearing is installed on the first correction block 45. One end of the first correction shaft is installed on the first correction slide plate 44, and the other end is inserted into the first bearing. Therefore, the first correction block 45 can rotate around the first correction shaft. The second bearing is installed on the second correction block 47. One end of the second correction shaft is installed on the second correction slide plate 46, and the other end is inserted into the second bearing. The second correction block 47 can rotate around the second correction shaft.

[0029] Please check again. Figure 7The correction assembly 40 further includes a correction rod 48, a correction sensor 49, and a correction power element 49a. One end of the correction rod 48 is mounted on the first correction seat 41, and the other end extends along the arrangement direction of the upper machine head 30. The correction sensor 49 is slidably mounted on the correction rod 48 to adjust the position of the correction sensor 49. The correction sensor 49 is used to sense the baseline of the fabric 90. Optionally, the baseline of the fabric 90 is the edge of the fabric 90, and the correction sensor 49 is disposed between the lower machine head 20 and the correction guide roller 43. The correction power element 49a is mounted on the first correction seat 41 and is used to drive the first correction slide plate 44 to slide. Optionally, the correction sensor 49 is an ultrasonic sensor, and the correction power element 49a is a lead screw motor. In use, the first correction slide plate 44 is slidably mounted on the first correction seat 41 by the correction power element 49a. The first correction slide plate 44 drives the first correction block 45 to slide, thereby driving one end of the correction guide roller 43 to move. At the same time, the first correction block 45 rotates around the first correction axis, and then the other end of the correction guide roller 43 drives the second correction block 47 to rotate around the second correction axis, while driving the second correction slide plate 46 to slide in the opposite direction on the second correction seat 42. Thus, the correction guide roller 43 achieves horizontal tilting swing, straightening the fabric 90.

[0030] like Figure 4 and Figure 9As shown, the conveying assembly 50 includes a conveying support plate 51, a driving roller 52, a conveying power element 53, a swing plate 54, a driven roller 55, a swinging power element 56, and a discharge roller 57. There are two conveying support plates 51, two swing plates 54, and two swinging power elements 56, each corresponding to one other. The two conveying support plates 51 are respectively installed at both ends of the frame 10. The two ends of the driving roller 52 are rotatably connected to the two conveying support plates 51. The conveying power element 53 is installed on one of the conveying support plates 51 and is used to drive the driving roller 52 to rotate. One end of the swing plate 54 is rotatably connected to the conveying support plate 51, and the two ends of the driven roller 55 are rotatably connected to the two swing plates 54. One end of the swinging power element 56 is pivotally connected to the conveying support plate 51, and the other end is pivotally connected to the swing plate 54. The swinging power element 56 is used to drive the swing plate 54 to rotate. The oscillating power element 56 drives the swing plate 54 to rotate, thereby causing the driven roller 55 to move closer to or further away from the driving roller 52, thus adjusting the distance between the driven roller 55 and the driving roller 52 to accommodate fabrics 90 of different thicknesses; the two ends of the discharge roller 57 are respectively pivotally connected to the two conveying support plates 51; optionally, the conveying assembly 50 also includes a driving sprocket (not shown), a driven sprocket (not shown), a chain (not shown), a first driven gear (not shown), and a second driven gear (not shown). The driving sprocket is installed at the output end of the conveying power element 53, the driven sprocket is installed on the driving roller 52, one end of the chain is connected to the driving sprocket, and the other end is connected to the driven sprocket. The first driven gear is installed on the driving roller 52, and the second driven gear is installed on the driven roller 55. The first driven gear and the second driven gear mesh, and the chain drives the driving roller 52 to rotate, thereby driving the first driven wheel to rotate, and then driving the second driven wheel to rotate, so that the driven roller 55 rotates synchronously.

[0031] like Figure 1 and Figure 2As shown, the adjustable-pitch multi-head quilting machine 100 also includes a buffer assembly 60. The buffer assembly 60 includes a support frame 61, a conveyor roller 62, a buffer slide plate 63, a buffer roller 64, a first position sensor 65, and a second position sensor 66. The support frame 61 is installed on the side of the machine frame 10 near the correction assembly 40. The two ends of the conveyor roller 62 are respectively pivotally connected to the two ends of the support frame 61. There are two buffer slide plates 63, which are respectively slidably disposed at the two ends of the support frame 61. The two ends of the buffer roller 64 are respectively pivotally connected to the two buffer slide plates 63. The first position sensor 65 and the second position sensor 66 are respectively installed on the two ends of the support frame 61. At the end, both the first position sensor 65 and the second position sensor 66 are used to sense the buffer slide plate 63; optionally, the first position sensor 65, the second position sensor 66 and the transmission power element 53 are all connected to the controller signal. When the buffer slide plate 63 triggers the second position sensor 66, the whole machine stops operating, such as the needle 36 and the bottom hook stopping sewing, and the transmission power element 53 stops operating, thereby stopping the fabric 90 from moving from the support frame 61 towards the upper head 30, preventing the continued transmission of the fabric 90 from pulling the support frame 61; when the buffer slide plate 63 triggers the first position sensor 65, the whole machine starts running again, such as the transmission power element 53 operating again, and the fabric 90 continues to move from the support frame 61 towards the upper head 30. In use, one end of the fabric 90 is connected to the conveying assembly 50, and the other end is connected to the external conveying mechanism via the buffer roller 64. Under the gravity of the buffer roller 64, the buffer roller 64 provides tension to the fabric 90. Under the action of the conveying assembly 50 and the buffer roller 64, the fabric 90 is tightened, which facilitates correction and sewing, and improves the sewing quality. In addition, when the conveying speed of the external conveying mechanism is lower than the conveying speed of the conveying assembly 50, the buffer slide plate 63 continuously slides towards the second position sensor 66 until the second position sensor 66 is triggered. At this time, the whole machine stops operating. As the external conveying mechanism continues to convey material, the buffer slide plate 63 continuously slides towards the first position sensor 65 until the buffer slide plate 63 triggers the first position sensor 65, and the whole machine starts running again.

[0032] In one embodiment, the buffer assembly 60 further includes a limit switch 67, a buffer rack 68, and a buffer gear (not shown). The limit switch 67 is installed at the end of the second position sensor 66 away from the first position sensor 65. The buffer slide plate 63 is used to trigger the limit switch 67. Optionally, the limit switch 67 is connected to the controller signal. When the buffer slide plate 63 fails to trigger the second position sensor 66, the buffer slide plate 63 continues to slide upward on the support frame 61 until the buffer slide plate 63 triggers the limit switch 67. At this time, the transmission power element 53 stops operating, providing dual protection to ensure that the entire machine stops when there is too little fabric 90 on the support frame 61, preventing the support frame 61 from being pulled due to insufficient fabric 90. There are two buffer racks 68 and two buffer gears, which correspond one-to-one. The two buffer racks 68 are respectively installed at both ends of the support frame 61, and the two buffer gears are respectively installed at both ends of the buffer roller 64. The buffer gears mesh with the buffer racks 68, allowing the buffer slide plate 63 to slide stably. In one embodiment, the buffer assembly 60 further includes a foot pedal (not shown) and two guide rollers 69. The foot pedal is installed between the frame 10 and the support frame 61. The two guide rollers 69 are rotatably connected to both ends of the foot pedal and are used to convey the fabric 90.

[0033] like Figure 5 , Figure 6 and Figure 10 As shown, to achieve integrated sewing and strip cutting, this adjustable-pitch multi-head quilting machine 100 further includes a bottom knife assembly 70 and a top knife assembly 80, with multiple bottom knife assemblies 70 and top knife assemblies 80, each corresponding to a specific other. The bottom knife assembly 70 includes a knife sleeve 71 and a cutting power element 72. The knife sleeve 71 is rotatably connected to the lower sewing head 20, and the cutting power element 72 is mounted on the lower sewing head 20, driving the knife sleeve 71 to rotate. Optionally, the knife sleeve 71 is rotatably connected to the fixed base 23, and the cutting power element 72 is mounted on the fixed base 23. Further, the knife sleeve 71 is provided corresponding to the through hole 240; the knife sleeve 71 is made of steel, which is wear-resistant and durable. In one embodiment, the bottom blade assembly 70 further includes a blade shaft 73 and a limiting sleeve 74. The blade shaft 73 is rotatably connected to the fixed base 23, and the cutting power element 72 is used to drive the blade shaft 73 to rotate. The limiting sleeve 74 is installed on the blade shaft 73, and the blade sleeve 71 is installed on the limiting sleeve 74. Optionally, the through hole 240 is used to accommodate the blade sleeve 71 and the limiting sleeve 74. Further, the tops of both the blade sleeve 71 and the limiting sleeve 74 are flush with the top of the needle plate 24 to support the fabric 90.

[0034] like Figure 6As shown, the top cutter assembly 80 includes a lifting power element 81, a support 82, and a roller cutter 83. The lifting power element 81 is installed on the upper machine head 30 and is used to drive the support 82 to rise and fall. The roller cutter 83 is rotatably connected to the support 82 and is disposed corresponding to the cutter sleeve 71. The cutter sleeve 71 is used to drive the roller cutter 83 to rotate. During edge cutting, the edge cutting power element 72 drives the cutter sleeve 71 to rotate, and the cutter sleeve 71 drives the roller cutter 83 to rotate. Under the pressure of the cutter sleeve 71 and the roller cutter 83, the fabric 90 is cut, reducing the dust generated during the cutting of the fabric 90. Optionally, the lifting power element 81 is installed on the mounting plate 34; furthermore, the top cutter assembly 80 also includes a protective cover 84, which is installed on the support 82 and covers the roller cutter 83. During the trimming process, the lifting power element 81 drives the support 82 to descend until the bottom of the hob 83 abuts against the top of the cutter sleeve 71. Then, the trimming power element 72 drives the cutter shaft 73 to rotate, the cutter shaft 73 drives the limiting sleeve 74 to rotate synchronously, the limiting sleeve 74 drives the cutter sleeve 71 to rotate synchronously, and thus the cutter sleeve 71 drives the hob 83 to rotate.

[0035] like Figure 2 As shown, during use, one end of the fabric 90 is conveyed to the buffer roller 64 via an external material transfer mechanism, and then sequentially conveyed to the needle plate 24 via the conveying roller 62, the guide roller 69, and the correction guide roller 43. It is then conveyed to the discharge roller 57 via the cooperation of the driving roller 52 and the driven roller 55. As the fabric 90 is conveyed, the buffer roller 64 slides on the support frame 61. When the buffer slide plate 63 triggers the second position sensor 66 or the limit switch 67, the entire machine stops, the needle 36 and the bottom hook stop sewing, the transmission power element 53 stops operating, the feeding towards the upper head 30 stops, and the cutter sleeve 71 stops rotating. As the external material transfer mechanism continues to feed, the buffer slide plate 63 continuously slides towards the first position sensor 65 until the buffer slide plate 63 triggers the first position sensor 65. At this point, the entire machine resumes operation.

[0036] like Figure 7 and Figure 8 As shown, when the correction sensor 49 detects that the edge of the fabric 90 is not at the center of the detection point, i.e., a deviation occurs, the correction power element 49a drives the first correction slide plate 44 to slide onto the first correction seat 41. The first correction slide plate 44 drives the first correction block 45 to slide, thereby driving one end of the correction guide roller 43 to move. At the same time, the first correction block 45 rotates around the first correction axis, and then the other end of the correction guide roller 43 drives the second correction block 47 to rotate around the second correction axis, while driving the second correction slide plate 46 to slide in the opposite direction onto the second correction seat 42. Thus, the correction guide roller 43 achieves horizontal tilting and swinging until the detection point of the correction sensor 49 detects that the edge of the fabric 90 is at the center of the detection point, thereby straightening the fabric 90. Figure 8As shown, when the correction sensor 49 detects that the edge of the fabric 90 near the correction guide roller 43 is shifted to the right, that is, the edge of one end of the fabric 90 is to the right of the center of the detection point of the correction sensor 49, the correction power element 49a drives the first correction slide plate 44 to slide towards the frame 10. Under the action of the first correction block 45, the end of the correction guide roller 43 connected to the first correction block 45 slides towards the frame 10. At the same time, the end of the correction guide roller 43 connected to the second correction block 47 drives the second correction slide plate through the second correction block 47. 46 slides away from the frame 10, so that the guide roller 43 tilts horizontally, causing the end of the fabric 90 near the guide roller 43 to move to the left and achieve alignment; conversely, when the correction sensor 49 detects that the edge of the end of the fabric 90 near the guide roller 43 has shifted to the left, the correction power element 49a drives the first correction slide plate 44 to slide away from the frame 10 and the second correction slide plate 46 to slide towards the frame 10, so that the end of the fabric 90 near the guide roller 43 moves to the right and achieves alignment.

[0037] After the fabric 90 is aligned, it is conveyed to the sewing station, where a straight line is sewn with the help of the hook and the needle 36. After the straight line is sewn, when the fabric 90 is conveyed to the top of the cutter sheath 71, the cutter sheath 71 drives the roller cutter 83 to rotate. Under the pressure of the cutter sheath 71 and the roller cutter 83, the fabric 90 is cut.

[0038] This adjustable-spacing multi-head quilting machine 100 is synchronously slidable on the frame 10 via a first slide plate 21 and a second slide plate 31. By adjusting the spacing between adjacent upper heads 30 and adjacent lower heads 20, it can simultaneously sew fabrics 90 of different widths. The two ends of the correction guide roller 43 are respectively oscillating and connected to the first correction seat 41 and the second correction seat 42 to correct the deviation of the fabric 90, ensuring that the fabric 90 is accurately positioned when entering the lower head 20 and the upper head 30 for processing. The cutter sleeve 71 is installed on the lower head 20 and the roller cutter 83 is installed on the upper head 30, realizing the integration of sewing and cutting. The cutter sleeve 71 drives the roller cutter 83 to rotate. The roller cutter 83 rotates at a relatively slow speed. Under the pressure of the cutter sleeve 71 and the roller cutter 83, the fabric 90 is cut, reducing the dust generated during the cutting of the fabric 90 and making it safer.

[0039] The adjustable-spacing multi-head quilting machine 100 of the present invention allows for the simultaneous production of fabrics 90 of different widths by adjusting the spacing between adjacent lower heads 20 and adjacent upper heads 30 through the synchronous sliding of the lower head 20 and upper head 30 on the frame 10. By swinging the two ends of the correction guide roller 43 to the first correction seat 41 and the second correction seat 42 respectively, the fabric 90 is corrected, ensuring that the fabric 90 is accurately positioned when entering the lower head 20 and the upper head 30 for processing, thus guaranteeing the processing quality of the product.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A multi-head quilting machine with adjustable spacing, characterized in that, The system includes a frame, a lower sewing head, an upper sewing head, a fabric correction assembly, and a conveying assembly. Multiple lower and upper sewing heads are provided, each corresponding to one other. Each lower and upper sewing head is synchronously slidably positioned at both ends of the frame. The fabric correction assembly and the conveying assembly are respectively installed on both sides of the frame. The fabric correction assembly includes a first correction seat, a second correction seat, and a correction guide roller. The first and second correction seats are respectively installed at both ends of the frame, and the two ends of the correction guide roller are oscillatingly connected to the first and second correction seats. After being corrected by the correction guide roller, the fabric is conveyed to the conveying assembly.

2. The multi-head quilting machine with adjustable spacing according to claim 1, characterized in that, The first correction seat is inclined, and the second correction seat is symmetrically arranged with the first correction seat about the center of the axis of symmetry of the frame.

3. The multi-head quilting machine with adjustable spacing according to claim 1, characterized in that, The correction assembly further includes a first correction slide plate, a first correction block, a second correction slide plate, and a second correction block. The first correction slide plate is slidably disposed on the first correction seat, and the first correction block is horizontally rotatably connected to the first correction slide plate. The second correction slide plate is slidably disposed on the second correction seat, and the second correction block is horizontally rotatably connected to the second correction slide plate. The two ends of the correction guide roller are respectively rotatably connected to the first correction block and the second correction block.

4. The multi-head quilting machine with adjustable spacing according to claim 3, characterized in that, The correction assembly further includes a correction rod, a correction sensor, and a correction power element. One end of the correction rod is installed on the first correction seat, and the other end extends along the arrangement direction of the upper head. The correction sensor is slidably mounted on the correction rod and is used to sense the baseline of the fabric. The correction power element is installed on the first correction seat and is used to drive the first correction slide plate to slide.

5. The multi-head quilting machine with adjustable spacing according to claim 1, characterized in that, The conveying assembly includes a conveying support plate, a drive roller, a conveying power element, a swing plate, a driven roller, a oscillating power element, and a discharge roller. There are two of each of the conveying support plate, swing plate, and oscillating power element, and they correspond one-to-one. The two conveying support plates are respectively installed at both ends of the frame. The two ends of the drive roller are rotatably connected to the two conveying support plates. The conveying power element is installed on one of the conveying support plates and is used to drive the drive roller to rotate. One end of the swing plate is rotatably connected to the conveying support plate, and the two ends of the driven roller are rotatably connected to the two swing plates. One end of the oscillating power element is pivotally connected to the conveying support plate, and the other end is pivotally connected to the swing plate. The oscillating power element is used to drive the swing plate to rotate. The two ends of the discharge roller are pivotally connected to the two conveying support plates.

6. The multi-head quilting machine with adjustable spacing according to claim 1, characterized in that, It also includes a buffer assembly, which includes a support frame, a conveyor roller, a buffer slide plate, a buffer roller, a first position sensor, and a second position sensor. The support frame is installed on the side of the frame near the correction assembly. The two ends of the conveyor roller are respectively pivotally connected to the two ends of the support frame. There are two buffer slide plates, which are respectively slidably disposed at the two ends of the support frame. The two ends of the buffer roller are respectively pivotally connected to the two buffer slide plates. The first position sensor and the second position sensor are respectively installed at the two ends of the support frame, and both the first position sensor and the second position sensor are used to sense the buffer slide plates.

7. The multi-head quilting machine with adjustable spacing according to claim 6, characterized in that, The buffer assembly further includes a limit switch, a buffer rack, and a buffer gear. The limit switch is installed at the end of the second position sensor away from the first position sensor, and the buffer slide is used to trigger the limit switch. There are two buffer racks and two buffer gears, which correspond one-to-one. The two buffer racks are respectively installed at both ends of the support frame, and the two buffer gears are respectively installed at both ends of the buffer roller. The buffer gears mesh with the buffer racks.

8. The multi-head quilting machine with adjustable spacing according to claim 1, characterized in that, It also includes a bottom blade assembly and a top blade assembly, each with multiple bottom blade assemblies and a one-to-one correspondence; the bottom blade assembly includes a blade sleeve and a cutting power element, the blade sleeve is rotatably connected to the lower machine head, the cutting power element is installed on the lower machine head, and the cutting power element is used to drive the blade sleeve to rotate; the top blade assembly includes a lifting power element, a support, and a roller cutter, the lifting power element is installed on the upper machine head, the lifting power element is used to drive the support to lift, the roller cutter is rotatably connected to the support, the roller cutter is arranged corresponding to the blade sleeve, and the blade sleeve is used to drive the roller cutter to rotate.

9. The multi-head quilting machine with adjustable spacing according to claim 8, characterized in that, The lower cutting head includes a first sliding plate, a first lateral movement force element, a fixed base, and a needle plate. The first sliding plate is slidably mounted on the frame, the first lateral movement force element is mounted on the first sliding plate, and the fixed base is mounted on the first sliding plate. The needle plate is mounted on the fixed base. The needle plate has a through hole to accommodate the blade sleeve. The blade sleeve is rotatably connected to the fixed base, and the edge-cutting power element is mounted on the fixed base. The bottom blade assembly also includes a blade shaft and a limiting sleeve. The blade shaft is rotatably connected to the fixed base, and the edge-cutting power element is used to drive the blade shaft to rotate. The limiting sleeve is mounted on the blade shaft, and the blade sleeve is mounted on the limiting sleeve.

10. The multi-head quilting machine with adjustable spacing according to claim 8, characterized in that, The upper head includes a second slide plate, a second lateral movement force element, a housing, and a mounting plate. The second slide plate is slidably mounted on the frame, and the second lateral movement force element is mounted on the second slide plate. The housing and the mounting plate are respectively mounted on both sides of the second slide plate. The lifting power element is mounted on the mounting plate. The top cutter assembly also includes a protective cover, which is mounted on the support and covers the roller cutter.

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