A polyester knitted fabric density adjusting device

Abstract

The utility model belongs to the technical field of knitted grey fabric production equipment, especially a polyester knitted grey fabric density adjusting device, including frame, the top fixed connection of frame has gantry, four guide rollers are rotatably connected on the front and back inner wall of frame, be provided with knitting mechanism and density adjusting mechanism on the frame, and knitting mechanism includes a plurality of needle cylinder and knitting needle that is slidably arranged in needle cylinder, the density adjusting mechanism includes the synchronous height adjusting assembly that sets up between a plurality of needle cylinder and gantry, and the stitch length adjusting assembly that sets up between a plurality of needle cylinder and frame. The utility model structure design is reasonable, through the accurate adjustment to stitch length, can adjust the density of knitted grey fabric to the spacing between knitting needle and knitted grey fabric can be adjusted, and then the movement stroke of knitting needle can be changed, thereby the density of knitted grey fabric is adjusted, and the tension of knitted grey fabric can be adjusted, guarantees the quality of knitted grey fabric.

Description

Technical Field

[0001] This utility model relates to the technical field of knitted fabric production equipment, and in particular to a device for adjusting the density of polyester knitted fabric. Background Technology

[0002] In the production of polyester knitted fabric, fabric density is a crucial quality indicator. Different application scenarios and product requirements dictate varying fabric density requirements. However, existing knitting equipment presents several challenges in adjusting fabric density. For instance, some equipment involves complex density adjustment operations, demanding highly skilled and experienced operators, and the process is time-consuming, impacting production efficiency. Furthermore, some equipment lacks sufficient density adjustment precision, failing to meet the demands of high-quality product production. Therefore, designing a device that allows for convenient, quick, and precise adjustment of polyester knitted fabric density is essential. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a device for adjusting the density of polyester knitted fabric.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A polyester knitted fabric density adjustment device includes a frame, a gantry frame fixedly connected to the top of the frame, four guide rollers rotatably connected to the inner walls of the front and rear sides of the frame, a knitting mechanism and a density adjustment mechanism arranged on the frame, the knitting mechanism including a plurality of needle cylinders and knitting needles slidably arranged in the needle cylinders, the density adjustment mechanism including a synchronous height adjustment component arranged between the plurality of needle cylinders and the gantry frame, and a needle spacing adjustment component arranged between the plurality of needle cylinders and the frame, and a controller fixedly connected to the front side of the frame.

[0006] In a preferred embodiment of this invention, the synchronous height adjustment assembly includes a drive motor fixedly connected to the top of the gantry frame and two threaded cylinders rotatably connected to the top of the gantry frame. A drive gear is fixedly connected to the output shaft of the drive motor, and driven gears are fixedly sleeved on the outer sides of the two threaded cylinders. The drive gear meshes with the two driven gears. A lifting screw is threadedly sleeved inside each of the two threaded cylinders, and an ear plate is fixedly connected to the lower end of each of the two lifting screws. A common slide rail is fixedly connected between the two ear plates, and multiple sliding elements are slidably sleeved inside the slide rail. The multiple sliding elements are respectively fixedly connected to the top of the corresponding syringe.

[0007] As a preferred embodiment of this invention, the top of the gantry frame is slidably provided with two limiting rods, both of which are fixedly connected to the top of the slide rail.

[0008] As a preferred embodiment of this utility model, the top of the gantry frame is fixedly connected to two bearings, and two threaded cylinders are respectively fixedly sleeved in the inner ring of the corresponding bearings.

[0009] In a preferred embodiment of this invention, the needle spacing adjustment assembly includes a guide opening and two slide grooves on the top of the frame. A movable seat is slidably fitted inside the guide opening. Two sliders are fixedly connected to the bottom of the movable seat. The same guide rod is fixedly connected to the inner walls of the front and rear sides of the slide grooves. The two sliders are slidably fitted on the outer sides of the corresponding guide rods. A vertical groove is formed between the sliders and the movable seat. The syringe is slidably fitted inside the movable seat. A brake pad is movably abutted against the top of the guide rod. A pull rod and a return spring are fixedly connected to the top of the brake pad. The top of the return spring is fixedly connected to the inner wall of the top of the vertical groove. The tops of the two pull rods are fixedly connected to the same pull plate.

[0010] As a preferred embodiment of this utility model, the stitch length adjustment assembly further includes a torsion spring fixedly connected to the top of the movable seat and a rotating rod rotatably connected to the top of the movable seat. A limit block is fixedly connected to the top of the rotating rod and the torsion spring, and the limit block movably abuts against the top of the pull plate.

[0011] As a preferred embodiment of this utility model, a scale is fixedly connected to the top of the frame, and a pointer is fixedly connected to one side of the movable base, the pointer cooperating with the scale.

[0012] As a preferred embodiment of this utility model, the frame is further provided with a tension adjustment mechanism, which includes a cylinder fixedly connected to the top of the frame, a lifting plate fixedly connected to the output shaft of the cylinder, a vertical spring and two telescopic rods fixedly connected to the bottom of the lifting plate, a pressure sensor fixedly connected to the lower end of the vertical spring and the two telescopic rods, a mounting bracket fixedly connected to the bottom of the pressure sensor, and tension rollers rotatably connected to the inner walls of the front and rear sides of the mounting bracket.

[0013] In this utility model, a polyester knitted fabric density adjustment device is described. By pushing the limiting block outwards, the limiting block does not restrict the pull plate. At this time, pulling the pull plate, two pull rods, and two brake pads upwards without firmly contacting the guide rod, and thus not fixing the moving seat, the front and rear positions of the moving seat and needle cylinder can be precisely adjusted by the pointer and scale. The sliding rail and sliding parts do not hinder the normal adjustment of the moving seat and needle cylinder. After adjustment, releasing the pull plate, under the elastic force of the return spring, the brake pads firmly contact the outside of the guide rod, thus fixing the moving seat and needle cylinder. Releasing the limiting block, under the torque of the torsion spring, the limiting block contacts the top of the pull plate, thus fixing the brake pads and improving the stability of the moving seat. Following the above steps, the front and rear positions of the moving seat and needle cylinder can be adjusted one by one, thereby precisely adjusting the stitch length and thus adjusting the density of the knitted fabric.

[0014] In this utility model, a polyester knitted fabric density adjustment device is described. The drive motor drives the rotation of the active gear, which in turn drives the synchronous rotation of two driven gears and the threaded cylinder. The two threaded cylinders drive the lifting of two lifting screws, two ear plates, slide rails, sliding parts, needle cylinders, and knitting needles, thereby adjusting the distance between the knitting needles and the knitted fabric and changing the movement stroke of the knitting needles, thus adjusting the density of the knitted fabric.

[0015] This utility model has a reasonable structural design. By precisely adjusting the needle pitch, the density of the knitted fabric can be adjusted, the distance between the knitting needle and the knitted fabric can be adjusted, and the movement stroke of the knitting needle can be changed, thereby adjusting the density of the knitted fabric. Furthermore, the tension of the knitted fabric can be adjusted to ensure the quality of the knitted fabric. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a polyester knitted fabric density adjustment device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of a polyester knitted fabric density adjustment device proposed in this utility model;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0019] Figure 4 for Figure 2 Partial sectional view;

[0020] Figure 5 for Figure 4 A schematic diagram of the structure of part B.

[0021] In the diagram: 1. Frame; 2. Guide roller; 3. Controller; 4. Tension adjustment mechanism; 5. Gantry frame; 6. Needle cylinder; 7. Synchronous height adjustment assembly; 8. Needle spacing adjustment assembly; 9. Knitting needle; 41. Cylinder; 42. Lifting plate; 43. Vertical spring; 44. Pressure sensor; 45. Tension roller; 46. Telescopic rod; 47. Mounting bracket; 70. Drive gear; 71. Limit rod; 72. Lifting screw; 73. Drive motor; 74. 75. Threaded cylinder; 76. Bearing; 77. Driven gear; 78. Slide rail; 79. Sliding component; 801. Ear plate; 802. Moving seat; 803. Pull plate; 804. Scale; 805. Pointer; 806. Slider; 807. Guide rod; 808. Slide groove; 809. Guide opening; 810. Brake pad; 811. Return spring; 812. Vertical groove; 813. Pull rod; 814. Torsion spring; 815. Limit block; 816. Rotating rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-5 A polyester knitted fabric density adjustment device includes a frame 1, a gantry frame 5 fixedly connected to the top of the frame 1, four guide rollers 2 rotatably connected to the inner walls of the front and rear sides of the frame 1, a knitting mechanism and a density adjustment mechanism are provided on the frame 1, the knitting mechanism includes a plurality of needle cylinders 6 and knitting needles 9 slidably disposed in the needle cylinders 6, a driving mechanism is provided in the needle cylinders 6 to drive the knitting needles 9 to move up and down to perform knitting, the density adjustment mechanism includes a synchronous height adjustment component 7 disposed between the plurality of needle cylinders 6 and the gantry frame 5, and a needle length adjustment component 8 disposed between the plurality of needle cylinders 6 and the frame 1, and a controller 3 fixedly connected to the front side of the frame 1.

[0024] Specifically, refer to Figures 1-3 The synchronous height adjustment assembly 7 includes a drive motor 73 fixedly connected to the top of the gantry frame 5 and two threaded cylinders 74 rotatably connected to the top of the gantry frame 5. A drive gear 70 is fixedly connected to the output shaft of the drive motor 73. Driven gears 76 are fixedly sleeved on the outer side of each of the two threaded cylinders 74. The drive gear 70 meshes with the two driven gears 76. A lifting screw 72 is threadedly sleeved inside each of the two threaded cylinders 74. Ear plates 79 are fixedly connected to the lower end of each of the two lifting screws 72. The same slide rail 77 is fixedly connected between the two ear plates 79. Multiple sliding parts 78 are slidably sleeved inside the slide rail 77. The multiple sliding parts 78 are respectively fixedly connected to the top of the corresponding syringe 6.

[0025] The above scheme is adopted: the drive motor 73 drives the rotation of the active gear 70, the active gear 70 drives the two driven gears 76 and the threaded cylinder 74 to rotate synchronously, and the two threaded cylinders 74 drive the two lifting screws 72, the two ear plates 79, the slide rail 77, the sliding part 78, the needle cylinder 6 and the knitting needle 9 to rise and fall, thereby adjusting the distance between the knitting needle 9 and the knitted fabric, changing the movement stroke of the knitting needle 9, and thus adjusting the density of the knitted fabric.

[0026] Specifically, the top of the gantry frame 5 is equipped with two limit rods 71, both of which are fixedly connected to the top of the slide rail 77 to facilitate the guidance of the slide rail 77 and make its lifting and lowering more stable.

[0027] Specifically, the top of the gantry frame 5 is fixedly connected to two bearings 75, and two threaded cylinders 74 are respectively fixedly sleeved in the inner ring of the corresponding bearings 75, so as to facilitate the support of the threaded cylinders 74 and make their rotation more stable and smooth.

[0028] Specifically, refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The needle pitch adjustment assembly 8 includes a guide opening 808 and two slide grooves 807 located on the top of the frame 1. A movable seat 801 is slidably fitted inside the guide opening 808. Two sliders 805 are fixedly connected to the bottom of the movable seat 801. The same guide rod 806 is fixedly connected to the inner walls of the front and rear sides of the slide grooves 807. The two sliders 805 are slidably fitted on the outer sides of the corresponding guide rods 806. A common vertical groove 811 is formed between the sliders 805 and the movable seat 801. The syringe 6 is slidably fitted inside the movable seat 801. The top of the guide rod 806 is movable. A brake pad 809 is abutted against. A pull rod 812 and a return spring 810 are fixedly connected to the top of the brake pad 809. The top of the return spring 810 is fixedly connected to the top inner wall of the vertical groove 811. The tops of the two pull rods 812 are fixedly connected to the same pull plate 802. The needle pitch adjustment assembly 8 also includes a torsion spring 813 fixedly connected to the top of the moving seat 801 and a rotating rod 815 rotatably connected to the top of the moving seat 801. A limit block 814 is fixedly connected to the top of the rotating rod 815 and the torsion spring 813. The limit block 814 movably abuts against the top of the pull plate 802.

[0029] Using the above scheme: Push the limiting block 814 outwards so that it does not limit the pull plate 802. At this time, pulling the pull plate 802, the two pull rods 812, and the two brake pads 809 upwards will not firmly abut against the guide rod 806, thus not fixing the moving seat 801. The forward and backward positions of the moving seat 801 and the syringe 6 can be precisely adjusted by the pointer 804 and the scale 803. The slide rail 77 and the sliding member 78 do not hinder the normal adjustment of the moving seat 801 and the syringe 6. After adjustment, release the pull plate. 802. Under the elastic force of the return spring 810, the brake pad 809 firmly abuts against the outside of the guide rod 806, thereby fixing the moving seat 801 and the needle cylinder 6. The limiting block 814 is released, and under the torque of the torsion spring 813, the limiting block 814 abuts against the top of the pull plate 802, thereby fixing the brake pad 809 and improving the stability of fixing the moving seat 801. By following the above steps, the front and rear positions of the moving seat 801 and the needle cylinder 6 can be adjusted one by one, thereby allowing for precise adjustment of the stitch length and thus adjusting the density of the knitted fabric.

[0030] Specifically, a scale 803 is fixedly connected to the top of the frame 1, and a pointer 804 is fixedly connected to one side of the movable seat 801. The pointer 804 cooperates with the scale 803 to facilitate precise adjustment of the position of the syringe 6.

[0031] Specifically, refer to Figure 1 and Figure 2 The frame 1 is also equipped with a tension adjustment mechanism 4. The tension adjustment mechanism 4 includes a cylinder 41 fixedly connected to the top of the frame 1. A lifting plate 42 is fixedly connected to the output shaft of the cylinder 41. A vertical spring 43 and two telescopic rods 46 are fixedly connected to the bottom of the lifting plate 42. A pressure sensor 44 is fixedly connected to the lower end of the vertical spring 43 and the two telescopic rods 46. A mounting bracket 47 is fixedly connected to the bottom of the pressure sensor 44. Tensioning rollers 45 are rotatably connected to the inner walls of the front and rear sides of the mounting bracket 47.

[0032] The above scheme is adopted: the cylinder 41 drives the lifting plate 42 to move down, and the pressure sensor 44 can measure the downward pressure force, which is the tension of the knitted fabric. When the requirement is met, the controller 3 closes the cylinder 41, thereby adjusting the tension of the knitted fabric within the specified range to ensure the quality of the knitted fabric.

[0033] In this invention, during use, the limiting block 814 is pushed outward, so that the limiting block 814 does not limit the pull plate 802. At this time, pulling the pull plate 802, the two pull rods 812, and the two brake pads 809 move upward without firmly abutting against the guide rod 806, thus not fixing the moving seat 801. The front and rear positions of the moving seat 801 and the syringe 6 can be accurately adjusted by the indication of the pointer 804 and the scale 803. The slide rail 77 and the sliding member 78 do not hinder the normal adjustment of the moving seat 801 and the syringe 6. After adjustment, the pull plate 802 is released. Under the elastic force of the return spring 810, the brake pads 809 firmly abut against the outside of the guide rod 806, thus fixing the moving seat 801 and the syringe 6. The limiting block 814 is then released. Under the torque of the torsion spring 813, the limiting block 814 abuts against the top of the pull plate 802, thereby fixing the brake pad 809 and improving the stability of the moving seat 801. Following the above steps, the front and rear positions of the moving seat 801 and the needle cylinder 6 can be adjusted one by one, thereby allowing for precise adjustment of the needle pitch and thus the density of the knitted fabric. The drive motor 73 drives the rotation of the active gear 70, which in turn drives the synchronous rotation of the two driven gears 76 and the threaded cylinder 74. The two threaded cylinders 74 drive the two lifting screws 72, the two ear plates 79, the slide rail 77, the sliding part 78, the needle cylinder 6, and the knitting needle 9 to rise and fall, thereby adjusting the distance between the knitting needle 9 and the knitted fabric, changing the travel of the knitting needle 9, and thus adjusting the density of the knitted fabric.

[0034] The cylinder 41 drives the lifting plate 42 to move downward. The pressure sensor 44 can measure the downward pressure force, which is the tension of the knitted fabric. When the requirement is met, the controller 3 closes the cylinder 41, thereby adjusting the tension of the knitted fabric within the specified range to ensure the quality of the knitted fabric.

Claims

1. A device for adjusting the density of polyester knitted fabric, characterized in that, The machine includes a frame (1), a gantry frame (5) is fixedly connected to the top of the frame (1), four guide rollers (2) are rotatably connected to the inner walls of the front and rear sides of the frame (1), a knitting mechanism and a density adjustment mechanism are provided on the frame (1), the knitting mechanism includes a plurality of cylinders (6) and knitting needles (9) slidably arranged in the cylinders (6), the density adjustment mechanism includes a synchronous height adjustment component (7) arranged between the plurality of cylinders (6) and the gantry frame (5), and a needle length adjustment component (8) arranged between the plurality of cylinders (6) and the frame (1), and a controller (3) is fixedly connected to the front side of the frame (1).

2. The polyester knitted fabric density adjustment device according to claim 1, characterized in that, The synchronous height adjustment assembly (7) includes a drive motor (73) fixedly connected to the top of the gantry (5) and two threaded cylinders (74) rotatably connected to the top of the gantry (5). The output shaft of the drive motor (73) is fixedly connected with a drive gear (70). The outer sides of the two threaded cylinders (74) are fixedly fitted with driven gears (76). The drive gear (70) meshes with the two driven gears (76). The two threaded cylinders (74) are threadedly fitted with lifting screws (72). The lower ends of the two lifting screws (72) are fixedly connected with ear plates (79). The two ear plates (79) are fixedly connected with the same slide rail (77). The slide rail (77) is slidably fitted with multiple sliding parts (78). The multiple sliding parts (78) are respectively fixedly connected to the top of the corresponding syringe (6).

3. The polyester knitted fabric density adjustment device according to claim 2, characterized in that, The top of the gantry (5) is slidably provided with two limit rods (71), and both limit rods (71) are fixedly connected to the top of the slide rail (77).

4. The polyester knitted fabric density adjustment device according to claim 2, characterized in that, The top of the gantry (5) is fixedly connected to two bearings (75), and two threaded cylinders (74) are respectively fixedly sleeved in the inner ring of the corresponding bearings (75).

5. The polyester knitted fabric density adjustment device according to claim 1, characterized in that, The needle spacing adjustment assembly (8) includes a guide opening (808) and two slide grooves (807) on the top of the frame (1). A movable seat (801) is slidably fitted inside the guide opening (808). Two sliders (805) are fixedly connected to the bottom of the movable seat (801). The same guide rod (806) is fixedly connected to the inner walls of the front and rear sides of the slide grooves (807). The two sliders (805) are slidably fitted on the outer side of the corresponding guide rods (806). A vertical groove (811) is provided between the syringe (6) and the movable seat (801). The syringe (6) is slidably sleeved in the movable seat (801). The top of the guide rod (806) is movably abutting against the brake pad (809). The top of the brake pad (809) is fixedly connected to a pull rod (812) and a return spring (810). The top of the return spring (810) is fixedly connected to the top inner wall of the vertical groove (811). The tops of the two pull rods (812) are fixedly connected to the same pull plate (802).

6. The polyester knitted fabric density adjustment device according to claim 5, characterized in that, The stitch length adjustment assembly (8) further includes a torsion spring (813) fixedly connected to the top of the movable seat (801) and a rotating rod (815) rotatably connected to the top of the movable seat (801). The top of the rotating rod (815) and the torsion spring (813) are fixedly connected to a limiting block (814), which is movably abutting against the top of the pull plate (802).

7. The polyester knitted fabric density adjustment device according to claim 5, characterized in that, A scale (803) is fixedly connected to the top of the frame (1), and a pointer (804) is fixedly connected to one side of the movable seat (801). The pointer (804) cooperates with the scale (803).

8. The polyester knitted fabric density adjustment device according to claim 1, characterized in that, The frame (1) is also provided with a tension adjustment mechanism (4). The tension adjustment mechanism (4) includes a cylinder (41) fixedly connected to the top of the frame (1). A lifting plate (42) is fixedly connected to the output shaft of the cylinder (41). A vertical spring (43) and two telescopic rods (46) are fixedly connected to the bottom of the lifting plate (42). A pressure sensor (44) is fixedly connected to the lower end of the vertical spring (43) and the two telescopic rods (46). A mounting bracket (47) is fixedly connected to the bottom of the pressure sensor (44). Tensioning rollers (45) are rotatably connected to the inner walls of the front and rear sides of the mounting bracket (47).

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