Automatic discharging system and automatic discharging method of circular knitting machine

Abstract

The automatic discharging system of the circular knitting machine comprises a protective cover, a machine frame and a cloth swinging mechanism installed on the machine frame are arranged in the protective cover, a traction roller, a clamping mechanism and a cutting mechanism are arranged on the upper portion of the machine frame, and a cloth pushing mechanism is further arranged on the cloth swinging frame. The protective cover is provided with an opening and an opening and closing device used for opening or closing the opening. According to the automatic discharging system, knitted fabric is automatically stacked on the cloth swinging frame through the cloth swinging mechanism, then the knitted fabric is automatically clamped and cut off through the clamping mechanism and the cutting mechanism, an opening of a protective cover is automatically opened through the opening and closing device, the cloth swinging frame is moved towards the opening direction through the transmission mechanism, and the knitted fabric is automatically discharged. The fabric pushing mechanism pushes the knitted fabric on the fabric swinging frame out of a protective cover of the circular knitting machine, and automatic discharging is achieved. And compared with a traditional manual discharging mode, the automation degree is high, a large amount of manpower and labor cost are saved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of large circular knitting machines, and in particular relates to an automatic discharging system and an automatic discharging method of a large circular knitting machine. Background Art

[0002] The scientific name of the circular knitting machine is the circular weft knitting machine or the circular weft knitting machine. It is a large machine commonly used in the weaving field. The outside of the circular knitting machine is equipped with a safety door. The upper part of the circular knitting machine is the weaving area. The lower part of the circular knitting machine has a traction roller and a swing mechanism for pulling the knitted fabric woven by the circular knitting machine out of the weaving area. The swing mechanism is used to swing the knitted fabric pulled out by the traction roller back and forth so that the knitted fabric is automatically stacked.

[0003] When the dispensing mechanism has stacked enough knitted fabrics, the discharging process is carried out. The discharging process of existing large circular knitting machines is usually manually operated, and the operator needs to open the safety door of the large circular knitting machine, and then the operator needs to cut the knitted fabrics and move the stacked knitted fabrics out of the dispensing mechanism. This traditional discharging process is cumbersome, and the manual labor intensity is high, and the work efficiency is also low. Although there are some auxiliary cutting equipment on the market, it is still necessary to rely on manual labor to move the knitted fabrics out of the large circular knitting machine. In addition, since the large circular knitting machine can work 24 hours a day, multiple operators are required to take turns to perform the discharging operation all day long, and the labor cost is very high. How to design a large circular knitting machine that can realize a fully automatic discharging process has become the problem to be solved in this case.

[0004] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Summary of the Invention

[0005] The object of the present invention is to provide an automatic discharging system and an automatic discharging method for a large circular knitting machine, which can realize automatic discharging with a high degree of automation and can greatly save manpower and labor costs.

[0006] In order to achieve the above object, the present invention adopts such technical solution: An automatic discharging system for a large circular knitting machine includes a protective cover, a frame and a cloth-stack mechanism installed on the frame for stacking knitted fabrics, characterized in that the cloth-stack mechanism includes a cloth-stack frame and a transmission mechanism for driving the cloth-stack frame to move, the cloth-stack frame is slidably installed at the lower part of the frame, the upper part of the frame is provided with a traction roller for traction knitted fabrics, a clamping mechanism for clamping the knitted fabrics on the traction rollers, and a cutting mechanism for cutting the knitted fabrics on the traction rollers, and the cloth-stack frame is also provided with a a cloth pushing mechanism for pushing out the knitted fabric on the cloth-placing frame, the cloth pushing mechanism being slidably arranged on the cloth-placing frame, the protective cover being provided with an opening for the cloth-pushing mechanism to push out the knitted fabric, and an opening and closing device for opening or closing the opening, the clamping mechanism comprising two clamping seats movably arranged below the traction roller, and a clamping drive mechanism for driving the two clamping seats to move toward or away from each other, the arrangement direction of the clamping seats being the same as the arrangement direction of the traction roller, and the clamping seats moving toward each other to clamp the knitted fabric; The automatic discharging system further comprises a main control end, and the transmission mechanism, the clamping mechanism, the cutting mechanism, the cloth pushing mechanism and the opening and closing device are all control-connected to the main control end.

[0007] Furthermore, the frame includes a first frame and a second frame arranged opposite to each other, and a connecting frame connected between the first frame and the second frame, the connecting frame is located at the lower part of the first frame and the second frame, the cloth frame is slidably installed on the connecting frame, the traction roller, the clamping mechanism and the cutting mechanism are all located above the connecting frame, and the two ends of the clamping seat are respectively arranged on the first frame and the second frame.

[0008] Furthermore, the clamping drive mechanism includes a first clamping assembly respectively arranged at one end of the clamping seat and a second clamping assembly arranged at the other end of the clamping seat, the first clamping assembly is arranged on the first frame, and the second clamping assembly is arranged on the second frame.

[0009] Furthermore, the first clamping assembly includes two obliquely arranged first clamping cylinders and first clamping plates respectively provided at the output ends of the corresponding first clamping cylinders, the output ends of the first clamping cylinders are arranged obliquely upward, the two first clamping cylinders are symmetrically arranged in an inverted eight shape with the outlet of the traction roller as the center, one end of the first clamping plate is a fixed end fixedly connected to the corresponding first clamping cylinder, and the other end is a rotating end rotatably connected to the first frame, and the two clamping seats are respectively fixed on the fixed ends of the corresponding first clamping plates at one end corresponding to the first frame; The second clamping assembly has the same structure as the first clamping assembly, and the second clamping assembly includes two obliquely arranged second clamping cylinders and second clamping plates respectively arranged at the output ends of the corresponding second clamping cylinders. The output ends of the second clamping cylinders are arranged in an inverted eight shape facing obliquely upward, and the two second clamping cylinders are symmetrically arranged with the outlet of the traction roller as the center. One end of the second clamping plate is a fixed end fixedly connected to the corresponding second clamping cylinder, and the other end is a rotating end rotatably connected to the second frame. The two clamping seats are respectively fixed on the fixed ends of the corresponding second clamping plates at one end of the second frame.

[0010] Furthermore, a first abutting top portion is protruded on one side of the fixed ends of the two first clamping plates facing each other, and a first limiting column for abutting the two first abutting top portions is provided below the outlet of the first frame corresponding to the traction roller, and the first limiting column is located on the moving path of the two first abutting top portions; A second abutting top portion is protruded from the opposite sides of the fixed ends of the two second clamping plates, and a second limiting column for the two second abutting top portions to abut is provided below the outlet of the second frame corresponding to the traction roller. The second limiting column is located on the moving path of the two second abutting top portions. When the two first clamping cylinders and the two second clamping cylinders drive the two clamping seats to clamp the knitted fabric, the two first abutting top portions respectively abut on both sides of the first limiting column, and the two second abutting top portions respectively abut on both sides of the second limiting column.

[0011] Furthermore, the cutting mechanism is arranged below one of the clamping seats, and the cutting mechanism includes a rodless cylinder and a cutter fixed on the output end of the rodless cylinder. The rodless cylinder is arranged along the length direction of the clamping seat, and the cutter is arranged toward the direction of the other clamping seat. A cutting channel for the cutter to extend into is correspondingly provided on the other clamping seat, and the cutting channel is arranged along the length direction of the clamping seat.

[0012] Furthermore, the cloth pushing mechanism includes a supporting plate slidably arranged on the cloth swing frame and a supporting plate driving mechanism for driving the supporting plate to move, and the supporting plate is vertically arranged on the cloth swing frame at one end away from the opening; the cloth pushing mechanism also includes a push plate arranged on the supporting plate and a push plate driving mechanism for driving the push plate to move, and the push plate is vertically arranged.

[0013] Furthermore, the opening and closing device includes a lifting mechanism and a panel and a door curtain that overlap each other. The panel is arranged horizontally, and the two ends of the panel are fixed on the protective cover. The door curtain is arranged vertically on the outside of the panel. The panel is located at the upper end of the door curtain, and the upper end of the door curtain is set on the panel. The lifting mechanism connects the door curtain and drives the door curtain to rise and fall, so that the door curtain moves from the lower end position to the upper end position to open and close the opening.

[0014] Furthermore, a gear lever assembly is provided at one end of the cloth swing frame close to the opening. The gear lever assembly includes a rotatable gear lever and a gear lever driving mechanism for driving the gear lever to rotate. The gear lever driving mechanism is located at the bottom of the cloth swing frame.

[0015] An automatic discharging method for a large circular knitting machine, comprising the automatic discharging system according to claim 1, characterized in that the automatic discharging method comprises the following steps: S1. The knitted fabric knitted by the circular knitting machine is pulled onto the cloth frame by the pulling roller, and the transmission mechanism drives the cloth frame to reciprocate so that the knitted fabric is automatically stacked on the cloth frame; S2. When the knitted fabric pulled out by the traction roller reaches a preset value, the transmission mechanism drives the cloth frame to stop moving; S3, the clamping drive mechanism drives the clamping seat to clamp the knitted fabric on the traction roller, and then the cutting mechanism cuts the knitted fabric from the traction roller, so that the knitted fabric falls completely onto the cloth rack; S4, the transmission mechanism continues to drive the cloth frame to move toward the opening of the protective cover; S5, the opening and closing device controls the opening of the protective cover to open, and the cloth pushing mechanism pushes the knitted fabric on the cloth swing frame out of the protective cover to complete the discharging process; S6. After the material is discharged, the transmission mechanism drives the cloth rack to return to the bottom of the traction roller, the cloth pushing mechanism returns to its original position, the opening and closing device controls the opening of the protective cover to close, the traction roller continues to pull the knitted fabric of the large circular machine onto the cloth rack, and the transmission mechanism drives the cloth rack to move back and forth and repeat the above S1 step.

[0016] By adopting the above-mentioned design scheme, the beneficial effects of the present invention are: The automatic discharging system of the present invention uses a cloth discharging mechanism to automatically stack knitted fabric on a cloth discharging frame. The clamping and cutting mechanisms then automatically clamp and cut the fabric. An opening and closing device automatically opens the opening of the protective cover. A transmission mechanism moves the cloth discharging frame toward the opening, and a cloth pushing mechanism pushes the knitted fabric on the cloth discharging frame out of the protective cover of the circular knitting machine, achieving automatic discharging. Compared to traditional manual discharging methods, this system offers a high degree of automation, saves significant manpower and labor costs, and significantly improves work efficiency.

[0017] Furthermore, a first abutment top, a second abutment top, a first limiting post and a second limiting post are provided to limit the travel of the two clamping seats, thereby preventing the two clamping seats from moving toward each other excessively, resulting in excessive clamping force and causing damage to the knitted fabric and other components.

[0018] Furthermore, the lifting mechanism also includes a sliding component for guiding the door curtain to be lifted and lowered. The sliding component can not only guide the door curtain to be lifted and lowered, but also have a certain bearing effect on the door curtain, making the door curtain more stable when being lifted and lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the automatic discharging system of the present invention, in which the door curtain is in a raised state.

[0020] Figure 2 This is a schematic structural diagram of the automatic discharging system of the present invention, in which the structure of the opening and closing device is omitted.

[0021] Figure 3 This is a schematic structural diagram of the automatic discharging system of the present invention, in which the structure of the protective cover is omitted.

[0022] Figure 4 This is a structural schematic diagram of the automatic discharging system of the present invention from another perspective, in which the structure of the protective cover is omitted.

[0023] Figure 5 It is a structural schematic diagram of the opening and closing device in the automatic discharging system of the present invention.

[0024] Figure 6 This is a structural schematic diagram from another perspective of the opening and closing device in the automatic discharging system of the present invention.

[0025] Figure 7 for Figure 4 Enlarged view of point A in the middle.

[0026] In the picture: 1-frame; 10-protective cover; 11-first frame; 12-second frame; 13-connecting frame; 14-first limiting column; 2- manipulation mechanism; 20-traction roller; 21-cloth frame; 22-transmission mechanism; 210-mounting slot; 211-slide rail; 3-cutting mechanism; 30- opening; 31- rodless cylinder; 32-cutter; 310-moving seat; 4- clamping seat; 41- cutting channel; 51-first clamping assembly; 52-second clamping assembly; 511-first clamping cylinder; 512-first clamping plate; 513-first abutting top portion; 521-second clamping cylinder; 522-second clamping plate; 6- cloth pushing mechanism; 61-carrying plate; 62-push plate; 63-push plate driving mechanism; 611-horizontal part; 612- vertical portion; 7- opening and closing device; 71-lifting mechanism; 72-panel; 73-door curtain; 74-sliding assembly; 711-Mounting frame; 712- rack; 713- gear; 714-lifting drive motor; 721-mounting plate; 741-mounting seat; 742-sliding rod; 743-Longboard; 744-Block; 8-gear lever assembly; 81-gear lever; 82-gear lever driving mechanism; 821-shift rod cylinder; 822-rotating shaft; 823-fixed seat; 824-swing piece. DETAILED DESCRIPTION The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 7As shown, an automatic discharging system of a large circular knitting machine includes a protective cover 10, a frame 1 and a cloth-stack mechanism 2 installed on the frame 1 for stacking knitted fabrics, the cloth-stack mechanism 2 includes a cloth-stack frame 21 and a transmission mechanism 22 for driving the cloth-stack frame 21 to move, the cloth-stack frame 21 is slidably installed at the lower part of the frame 1, and a traction roller 20 for pulling the knitted fabric is provided at the upper part of the frame 1. The cloth-stack mechanism 2 is used to reciprocate the knitted fabric pulled out by the traction roller 20 so that the knitted fabric is automatically stacked. Specifically, the frame 1 includes a first frame body 11 and a second frame body 12 arranged relatively to each other, and a transmission mechanism 22 connected to the frame 1. The connecting frame 13 between the first frame 11 and the second frame 12 is located at the lower part of the first frame 11 and the second frame 12, and the cloth-moving frame 21 is slidably mounted on the connecting frame 13; it should be noted that the automatic discharging system of the present invention is improved on the basis of the existing large circular knitting machine. The automatic discharging system is arranged at the lower part of the inner side of the large circular knitting machine, and is used to automatically stack the knitted fabrics knitted in the knitting area of ​​the upper part of the large circular knitting machine and automatically push the stacked knitted fabrics out of the protective cover 10; the cloth-moving mechanism 2 and the frame 1 in the present invention preferably adopt the invention disclosed in the patent application number "CN 217534942 U”, a Chinese invention patent application entitled “A Servo Loom Machine”, discloses a servo loom machine (the loom mechanism in the patent is the loom mechanism 2 of the present application, and the frame in the patent is the frame 1 of the present application). The detailed structure will not be described in detail here. The loom mechanism 2 in the present application may also adopt other conventional structures in the field, as long as the loom mechanism 2 can automatically stack the knitted fabric pulled out by the pulling roller 20 on the loom frame 21.

[0028] The traction roller 20 is rotatably arranged on the upper part of the frame 1, and the two ends of the traction roller 20 are respectively rotatably arranged between the first frame 11 and the second frame 12. The traction roller 20 adopts a conventional structure in this field, as long as it can pull out the knitted fabric knitted by the large circular machine. Specifically, in the present invention, the traction roller 20 is two adjacently arranged rollers, and a traction channel for the knitted fabric to pass through is formed between the two rollers. The knitted fabric enters the traction channel from above the two rollers and is led out from the bottom of the traction channel to the cloth frame 21.

[0029] like Figures 1 to 4As shown, the upper part of the frame 1 is also provided with a clamping mechanism for clamping the knitted fabric on the traction roller 20, and a cutting mechanism 3 for cutting the knitted fabric on the traction roller 20, and the clamping mechanism and the cutting mechanism 3 are both connected to the top of the frame body 13; specifically, in the present invention, the clamping mechanism includes two clamping seats 4 movably arranged below the traction roller 20, and a clamping drive mechanism for driving the two clamping seats 4 to move toward or away from each other, the arrangement direction of the clamping seats 4 is the same as the arrangement direction of the traction roller 20, the clamping drive mechanism controls the two clamping seats 4 to move toward each other to clamp the knitted fabric below the traction roller 20, specifically, the clamping drive mechanism includes a first clamping assembly 51 respectively arranged at one end of the clamping seat 4 and a second clamping assembly 52 arranged at the other end of the clamping seat 4, the first clamping assembly 51 is arranged on the first frame body 11, and the second clamping assembly 52 is arranged on the second frame body 12, the first clamping assembly 51 and the second The clamping assembly 52 moves synchronously, thereby driving the two clamping seats 4 to move; specifically, the first clamping assembly 51 includes two obliquely arranged first clamping cylinders 511 and first clamping plates 512 respectively arranged at the output ends of the corresponding first clamping cylinders 511, the output ends of the first clamping cylinders 511 are arranged obliquely upward, and the two first clamping cylinders 511 are symmetrically arranged with the traction channel of the traction roller 20 as the center and are both tilted outward in an inverted eight shape. One end of the first clamping plate 512 is a fixed end fixedly connected to the corresponding first clamping cylinder 511, and the other end is a rotating end rotatably connected to the first frame 11. One end of one clamping seat 4 corresponding to the first frame 11 is fixed on the fixed end of the corresponding first clamping plate 512, and the other end of the other clamping seat 4 corresponding to the first frame 11 is fixed on the fixed end of the corresponding other first clamping plate 512. The fixed end of the first clamping plate 512 is located above the traction roller 20.

[0030] Preferably, in this embodiment, the second clamping assembly 52 adopts the same structure as the first clamping assembly 51, and the first clamping assembly 51 and the second clamping assembly 52 are symmetrically arranged with the midpoint of the length direction of the traction roller 20 as the center, that is, the second clamping assembly 52 includes two obliquely arranged second clamping cylinders 521 and second clamping plates 522 respectively arranged at the output ends of the corresponding second clamping cylinders 521, the output ends of the two second clamping cylinders 521 are arranged toward obliquely upward and are both inclined outward in an inverted eight shape, and the two second clamping cylinders 521 are symmetrically arranged with the traction channel of the traction roller 20 as the center, accordingly, one end of the second clamping plate 522 is a fixed end fixedly connected to the corresponding second clamping cylinder 521, and the other end is a rotating end rotatably connected to the second frame 12, and the two clamping seats 4 corresponding to one end of the second frame 12 are respectively fixed on the fixed ends of the corresponding second clamping plates 522.

[0031] like Figure 4 and Figure 7As shown, the cutting mechanism 3 is fixed under one of the clamping seats 4. When the first clamping assembly 51 and the second clamping assembly 52 drive the two clamping seats 4 to clamp the knitted fabric, the cutting mechanism 3 is located on the side of the clamping seat 4 facing the other clamping seat 4. The cutting mechanism 3 includes a rodless cylinder 31 and a cutter 32 fixed on the output end of the rodless cylinder 31. The rodless cylinder 31 is arranged along the length direction of the clamping seat 4. One end of the rodless cylinder 31 is fixed on the first clamping plate 512, and the other end is fixed on the second clamping plate 522. The cutter 32 extends out of the rodless cylinder 31 and is arranged in the direction of the other clamping seat 4. A cutting channel 41 for the cutter 32 to extend into is correspondingly provided on the other clamping seat 4. The cutting channel 41 is arranged along the length direction of the clamping seat 4. Specifically, when the first clamping assembly 51 and the second clamping assembly 52 drive the two clamping seats 4 to clamp the knitted fabric, the cutter 32 can just extend into the cutting channel 41 of the other clamping seat 4, and then the cutter 32 is driven by the rodless cylinder 31 to cut the knitted fabric. Providing a cutting channel 41 for the cutter 32 to extend into can improve the stability of the cutter 32 when cutting. It should be noted that, in actual use, a cutting mechanism 3 can also be provided on the opposite side of the two clamping seats 4 to better complete the cutting action. It should be noted that the above-mentioned rodless cylinder 31 can adopt the conventional rodless cylinder 31 available on the market in this field. Accordingly, Figure 7 As shown, the rodless cylinder 31 has a seat body, and the output end of the rodless cylinder 31 has a movable seat 310 that can move along the seat body. The cutter 32 is fixed on the movable seat 310 of the rodless cylinder 31. The cutter 32 passes through the seat body of the rodless cylinder 31 and is set in the direction of another clamping seat 4, so that the movable seat 310 can drive the cutter 32 to move back and forth to cut the knitted fabric; the cutting mechanism 3 in the present invention can also adopt the structure of other conventional cutting mechanisms 3 in the field, as long as the knitted fabric on the traction roller 20 can be cut.

[0032] The first clamping assembly 51 and the second clamping assembly 52 are synchronously operated. The operation of the first clamping assembly 51 is now only described as an example. When the knitted fabric is not clamped, the two first clamping cylinders 511 are both in an extended state, and the two clamping seats 4 are both in a position away from the traction channel of the traction roller 20. When the knitted fabric needs to be clamped and cut, the two first clamping cylinders 511 are synchronously retracted, driving the fixed ends of the two first clamping plates 512 to rotate toward the position of the traction channel of the traction roller 20, and the first clamping plates 512 drive the clamping The movement of the seat 4 causes the two clamping seats 4 to move toward each other to clamp the knitted fabric. When the first clamping component 51 and the second clamping component 52 drive the two clamping seats 4 to clamp the knitted fabric, the knitted fabric is between the seat body of the rodless cylinder 31 and the other clamping seat 4. After clamping the knitted fabric, the cutting drive mechanism can be started to control the cutter 32 to move from one end of the cutting channel 41 to the other end to cut the knitted fabric. If necessary, the cutter 32 can be controlled to move back and forth to cut the knitted fabric multiple times, thereby achieving the purpose of cutting the knitted fabric.

[0033] Preferably, Figure 3 and Figure 4 As shown, the first clamping assembly 51 also includes a first abutting top portion 513. Specifically, the fixed ends of the two first clamping plates 512 facing each other are both protruding with a first abutting top portion 513. A first limiting column 14 for the two first abutting top portions 513 to abut is provided below the passage corresponding to the traction roller 20 on the first frame 11. The first limiting column 14 is located on the moving path of the two first abutting top portions 513. Since the second clamping assembly 52 adopts the same structure as the first clamping assembly 51, correspondingly, the fixed ends of the two second clamping plates 522 facing each other are both protruding with a second abutting top portion (not shown in the figure), and a first limiting column 14 for the two first abutting top portions 513 to abut is provided below the passage corresponding to the traction roller 20 on the second frame 12. The two second abutting tops abut against the second limiting posts (not shown in the figure), the second limiting posts are symmetrically arranged with the first limiting posts 14, and are located on the moving path of the two second abutting tops. When the two first clamping cylinders 511 and the two second clamping cylinders 521 act simultaneously to drive the two clamping seats 4 to clamp the knitted fabric, the two first abutting tops 513 respectively abut against the two sides of the first limiting post 14, and the two second abutting tops respectively abut against the two sides of the second limiting post. This arrangement can limit the stroke of the two clamping seats 4, so that the two clamping seats 4 can just clamp the knitted fabric, thereby avoiding excessive movement of the two clamping seats 4 toward each other, resulting in excessive clamping force and damage to the knitted fabric and other components.

[0034] like Figures 1 to 4As shown, the cloth-pushing frame 21 is further provided with a cloth-pushing mechanism 6 for pushing out the knitted fabric on the cloth-pushing frame 21. The cloth-pushing mechanism 6 is slidably arranged on the cloth-pushing frame 21. Specifically, the cloth-pushing mechanism 6 includes a supporting plate 61 slidably arranged on the cloth-pushing frame 21 and a supporting plate driving mechanism for driving the supporting plate 61 to move. The supporting plate 61 is vertically arranged at one end of the cloth-pushing frame 21 away from the opening 30. Preferably, the supporting plate 61 is an L-shaped plate. The L-shaped supporting plate 61 includes a horizontal portion 611 arranged horizontally and a vertical portion 612 arranged vertically. The horizontal portion 611 is used to support the knitted fabric, and the vertical portion 612 is used to resist the knitted fabric and prevent the knitted fabric from falling to the outside of the cloth-pushing frame 21.

[0035] Preferably, the structure of the supporting plate driving mechanism is as follows: two mounting grooves 210 are installed on the cloth-moving frame 21, and slide rails 211 are provided in the two mounting grooves 210. The setting direction of the two slide rails 211 is the same as the moving direction of the cloth-moving frame 21, and the two slide rails 211 are arranged in sequence along the length direction of the connecting frame body 13. Sliders (not shown in the figure) are provided on the two slide rails 211, that is, two slides, and the two slides are respectively fixedly connected to the bottom of the horizontal part 611 of the supporting plate 61, wherein the fixed connection structure between the horizontal part 611 and the two slides adopts the existing conventional connection structure, such as screw connection or pin connection, etc. The supporting plate driving mechanism also includes a driving device (not shown in the figure) for driving the two slides to move synchronously. The driving device can adopt a conventional motor or cylinder in this field. Accordingly, the driving device is set corresponding to the position of the two slides, and the output end of the driving device is connected to the corresponding slide to drive the slide and the supporting plate to move; the supporting plate driving mechanism can also adopt other conventional structures in this field, as long as it can drive the supporting plate 61 to move.

[0036] Preferably, the cloth pushing mechanism 6 also includes a push plate 62 arranged on the supporting plate 61 and a push plate driving mechanism 63 for driving the push plate 62 to move. Specifically, the push plate 62 is vertically arranged on the vertical portion 612 of the supporting plate 61 on one side close to the horizontal portion 611, and the push plate driving mechanism 63 is horizontally arranged on the vertical portion 612 and located in the middle of the vertical portion 612, and is used to push the push plate 62 to push the knitted fabric out. The push plate 62 is fixed at the output end of the push plate driving mechanism 63; it should be noted that the push plate driving mechanism 63 in this embodiment can adopt a conventional cylinder in this field.

[0037] like Figure 1 、 Figure 5 and Figure 6As shown, the protective cover 10 is provided with an opening 30 for the cloth pushing mechanism 6 to push the knitted fabric out, and an opening and closing device 7 for opening or closing the opening 30. Specifically, the opening and closing device 7 includes a lifting mechanism 71 and a panel 72 and a door curtain 73 that overlap each other. The panel 72 is arranged horizontally, and both ends of the panel 72 are fixed on the protective cover 10. The door curtain 73 is arranged vertically on the outside of the panel 72. The panel 72 is located at the upper end of the door curtain 73, and the upper end of the door curtain 73 overlaps the panel 72. The lifting mechanism 71 is connected to the door curtain 73 and drives the door curtain 73 to rise and fall, so that the door curtain 73 moves from the lower end position to the upper end position to open and close the opening 30.

[0038] Specifically, the lifting mechanism 71 includes a vertically arranged mounting frame 711, a rack 712 fixed on the mounting frame 711, a gear 713 engaged with the rack 712, and a lifting drive motor 714 for driving the gear 713 to rotate. The outer side of the mounting frame 711 is fixedly connected to the door curtain 73, the rack 712 is vertically arranged on the inner side of the mounting frame 711, the lifting drive motor 714 is fixed in the panel 72, and the output end of the lifting drive motor 714 is fixedly connected to the gear 713, thereby driving the gear 713 to drive the rack 712, the mounting frame 711 and the door curtain 73 to move up and down, thereby opening and closing the opening 30; preferably, a mounting plate 721 is extended downward from the outer side of the panel 72, and the lifting mechanism 71 also includes a sliding plate provided on the mounting plate 721 for guiding the door curtain 73 to move up and down. The lock body 71 of the embodiment of the present invention is fixed on the lock body 71, and the lock body 71 is fixed on the lock body 71. When the lock body 71 is unlocked, the lock body 71 is unlocked, and the lock body 71 is unlocked.

[0039] It should be noted that, in addition to the structure described in the above embodiment, the protective cover 10 and the opening and closing device 7 in the present invention may also adopt the structure disclosed in the Chinese invention patent application of the applicant with authorization announcement number "CN222332228U" and titled "A cloth dropping structure for a large circular knitting machine" (the frame in the above patent is the protective cover 10 in this application, the channel in the above patent corresponds to the position of the opening 30 in this application, and the opening and closing device in the above patent is the opening and closing device 7 in this application). The opening and closing device 7 of the protective cover 10 in the present invention may also adopt other conventional structures in the field, as long as the protective cover 10 can open an opening 30 for the cloth pushing mechanism 6 to push out the knitted fabric, and after the knitted fabric is pushed out, it will not affect the opening and closing device 7 from closing the opening 30.

[0040] Preferably, Figure 3 As shown, a gear lever assembly 8 is further provided at one end of the cloth swing frame 21 near the opening 30. The gear lever assembly 8 is provided so that the cloth swing frame 21 can block one side of the knitted fabric when it moves, so as to prevent the knitted fabric from falling to the outside of the cloth swing frame 21 when the cloth swing frame 21 moves back and forth; the gear lever assembly 8 includes a rotatable gear lever 81 and a gear lever driving mechanism 82 for driving the gear lever 81 to rotate. The gear lever driving mechanism 82 is located at the bottom of the cloth swing frame 21. The gear lever driving mechanism 82 adopts an existing conventional motor or cylinder. As long as it can make The gear lever 81 can be rotated; preferably, in this embodiment, the gear lever assembly 8 has two groups, and the two groups of gear lever assemblies 8 are spaced apart at the bottom of the cloth swing frame 21 near the opening 30. The two gear levers 81 are respectively fixed at the output ends of the two gear lever driving mechanisms 82, and the two gear levers 81 extend upward from the bottom of the cloth swing frame 21 to block the knitted fabric. The gear lever driving mechanism 82 includes a gear lever cylinder 821, a rotating shaft 822 located at the output end of the gear lever cylinder 821, and a fixed member for fixing the rotating shaft 822. The fixed seat 823, the rotating shaft 822 and the gear rod cylinder 821 are arranged vertically, the output end of the gear rod cylinder 821 is rotatably connected to one end of the rotating shaft 822 through a swing piece 824, the gear rod cylinder 821 and the rotating shaft 822 are respectively arranged at both ends of the swing piece 824, and the other end of the rotating shaft 822 is fixedly connected to the gear rod 81. When the gear rod cylinder 821 extends, the rotating shaft 822 is driven to rotate through the swing piece 824, and the rotating shaft 822 rotates to drive the gear rod 81 to rotate; when the discharging process is not carried out, the gear rod 81 In the initial state, the gear rod 81 is arranged vertically, so that the knitted fabric on the cloth frame 21 can be blocked. When the cloth frame 21 moves to the opening 30 close to the protective cover 10 to prepare for discharging, the gear rod cylinder 821 extends to make the gear rod 81 rotate downward to the bottom of the cloth frame 21, so that the cloth pushing mechanism 6 can push the knitted fabric out; preferably, in this embodiment, there are two groups of gear rod assemblies 8, and the two gear rod assemblies 8 are arranged at intervals along the length direction of the cloth frame 21, and the two groups of gear rod assemblies 8 move synchronously.

[0041] The automatic discharging system of the present invention also includes a main control end. Accordingly, the main control end is electrically connected to the control system of the existing large circular machine. The above-mentioned transmission mechanism 22, the first clamping cylinder 511, the second clamping cylinder 521, the cutting drive mechanism (i.e., the rodless cylinder 31), the drive device, the push plate drive mechanism 63, the gear rod cylinder 821 and the opening and closing device 7 are all controlled and connected to the main control end. In this embodiment, the main control end can adopt an existing conventional control system, such as a single-chip microcomputer control or a PLC control.

[0042] The present invention also provides an automatic discharging method for a large circular knitting machine, comprising the above-mentioned automatic discharging system. The automatic discharging method comprises the following steps: S1. The knitted fabric knitted by the circular knitting machine is pulled onto the cloth frame 21 by the pulling roller 20. The transmission mechanism 22 drives the cloth frame 21 to reciprocate so that the knitted fabric is automatically stacked on the cloth frame 21. The gear lever 81 is in the initial state, blocking the knitted fabric on the cloth frame 21. S2, when the knitted fabric pulled out by the pulling roller 20 reaches a preset value, the transmission mechanism 22 drives the cloth frame 21 to stop moving; S3: The first clamping assembly 51 and the second clamping assembly 52 operate synchronously, driving the clamping seat 4 to rotate and clamp the knitted fabric below the traction roller 20. The cutter 32 extends into the cutting channel 41, and then controls the movable seat 310 of the rodless cylinder 31 to move along the seat body to cut the knitted fabric from the traction roller 20, so that the knitted fabric falls completely onto the fabric frame 21. S4, the transmission mechanism 22 continues to drive the cloth swing frame 21 to move toward the opening 30 of the protective cover 10, and the gear rod cylinder 821 drives the rotating shaft 822 to rotate so that the gear rod 81 rotates downward to the bottom of the cloth swing frame 21; S5. The lifting drive motor 714 drives the gear 713 to drive the rack 712, the mounting frame 711, and the door curtain 73 to rise, so that the opening 30 is opened. The carrier plate driving mechanism drives the carrier plate 61 to move the knitted fabric quickly to a position close to the opening 30. The push plate driving mechanism 63 extends to cause the push plate 62 to push the knitted fabric on the carrier plate 61 out of the protective cover 10 to complete the unloading process. S6. After the material is discharged, the transmission mechanism 22 drives the cloth frame 21 to return to its original position, the supporting plate driving mechanism drives the supporting plate 61 to return to its original position, the push plate driving mechanism 63 retracts and drives the push plate 62 to return to its original position, the lifting mechanism 71 controls the door curtain 73 to descend so that the opening 30 is closed, and then the knitted fabric of the circular knitting machine continues to be pulled onto the cloth frame 21 through the traction roller 20, and the transmission mechanism 22 drives the cloth frame 21 to move back and forth and repeat the above S1 step.

[0043] The automatic discharging system of the present invention uses a cloth discharging mechanism 2 to automatically stack knitted fabric on a cloth discharging frame 21. The clamping mechanism and cutting mechanism 3 then automatically clamp and cut the fabric. An opening and closing device 7 automatically opens the opening 30 of the protective cover 10. A transmission mechanism 22 moves the cloth discharging frame 21 toward the opening 30. The cloth pushing mechanism 6 pushes the knitted fabric on the cloth discharging frame 21 out of the protective cover 10 of the circular knitting machine, achieving automatic discharging. Compared to traditional manual discharging methods, this system offers a high degree of automation, saves significant manpower and labor costs, and significantly improves work efficiency.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic discharging system for a large circular knitting machine, comprising a protective cover, a frame provided inside the protective cover, and a manipulating mechanism mounted on the frame for stacking knitted fabrics, characterized in that: The driving mechanism comprises a slidable member which is mounted on the frame and a transmission mechanism for driving the slidable member to move upwardly. The slidable member is provided with a traction roller for pulling the knitted fabric, a clamping mechanism for clamping the knitted fabric on the traction roller, and a cutting mechanism for cutting the knitted fabric on the traction roller. The slidable member is further provided with a cloth pushing mechanism for pushing the knitted fabric on the slidable member. The cloth pushing mechanism is slidably arranged on the cloth pushing mechanism, the protective cover is provided with an opening for the cloth pushing mechanism to push the knitted fabric out, and an opening and closing device for opening or closing the opening. The clamping mechanism comprises two clamping seats movably arranged below the traction roller, and a clamping driving mechanism for driving the two clamping seats to move toward or away from each other, the arrangement direction of the clamping seats being the same as the arrangement direction of the traction roller, and the clamping seats moving toward each other to clamp the knitted fabric. The automatic discharging system further comprises a main control end, and the transmission mechanism, the clamping mechanism, the cutting mechanism, the cloth pushing mechanism and the opening and closing device are all control-connected to the main control end.

2. The automatic discharging system of a circular knitting machine according to claim 1, characterized in that: The frame includes a first frame and a second frame that are arranged opposite to each other, and a connecting frame connected between the first frame and the second frame. The connecting frame is located at the lower part of the first frame and the second frame. The cloth frame is slidably installed on the connecting frame. The traction roller, the clamping mechanism and the cutting mechanism are all located above the connecting frame. The two ends of the clamping seat are respectively arranged on the first frame and the second frame.

3. The automatic discharging system of a circular knitting machine according to claim 2, characterized in that: The clamping drive mechanism includes a first clamping assembly respectively arranged at one end of the clamping seat and a second clamping assembly respectively arranged at the other end of the clamping seat, the first clamping assembly is arranged on the first frame, and the second clamping assembly is arranged on the second frame.

4. The automatic discharging system of a circular knitting machine according to claim 3, characterized in that: The first clamping assembly includes two obliquely arranged first clamping cylinders and first clamping plates respectively provided at the output ends of the corresponding first clamping cylinders, the output ends of the first clamping cylinders are arranged obliquely upward, the two first clamping cylinders are symmetrically arranged in an inverted eight shape with the outlet of the traction roller as the center, one end of the first clamping plate is a fixed end fixedly connected to the corresponding first clamping cylinder, and the other end is a rotating end rotatably connected to the first frame, and the two clamping seats are respectively fixed on the fixed ends of the corresponding first clamping plates at one end corresponding to the first frame; The second clamping assembly has the same structure as the first clamping assembly, and the second clamping assembly includes two obliquely arranged second clamping cylinders and second clamping plates respectively arranged at the output ends of the corresponding second clamping cylinders. The output ends of the second clamping cylinders are arranged in an inverted eight shape facing obliquely upward, and the two second clamping cylinders are symmetrically arranged with the outlet of the traction roller as the center. One end of the second clamping plate is a fixed end fixedly connected to the corresponding second clamping cylinder, and the other end is a rotating end rotatably connected to the second frame. The two clamping seats are respectively fixed on the fixed ends of the corresponding second clamping plates at one end of the second frame.

5. The automatic discharging system of a circular knitting machine according to claim 4, characterized in that: A first abutting top portion is protruded from one side of the fixed ends of the two first clamping plates facing each other, and a first limiting column for abutting the two first abutting top portions is provided below the outlet of the first frame corresponding to the traction roller, and the first limiting column is located on the moving path of the two first abutting top portions; A second abutting top portion is protruded from the opposite sides of the fixed ends of the two second clamping plates, and a second limiting column for the two second abutting top portions to abut is provided below the outlet of the second frame corresponding to the traction roller. The second limiting column is located on the moving path of the two second abutting top portions. When the two first clamping cylinders and the two second clamping cylinders drive the two clamping seats to clamp the knitted fabric, the two first abutting top portions respectively abut on both sides of the first limiting column, and the two second abutting top portions respectively abut on both sides of the second limiting column.

6. The automatic discharging system of a circular knitting machine according to claim 1, characterized in that: The cutting mechanism is arranged below one of the clamping seats, and the cutting mechanism includes a rodless cylinder and a cutter fixed on the output end of the rodless cylinder. The rodless cylinder is arranged along the length direction of the clamping seat, and the cutter is arranged toward the direction of the other clamping seat. A cutting channel for the cutter to extend into is correspondingly provided on the other clamping seat, and the cutting channel is arranged along the length direction of the clamping seat.

7. The automatic discharging system of a circular knitting machine according to claim 1, characterized in that: The cloth pushing mechanism includes a supporting plate slidably arranged on the cloth swing frame and a supporting plate driving mechanism for driving the supporting plate to move, and the supporting plate is vertically arranged on the cloth swing frame at one end away from the opening; the cloth pushing mechanism also includes a push plate arranged on the supporting plate and a push plate driving mechanism for driving the push plate to move, and the push plate is vertically arranged.

8. The automatic discharging system of a circular knitting machine according to claim 1, characterized in that: The opening and closing device includes a lifting mechanism and a panel and a door curtain that overlap each other. The panel is arranged horizontally, and the two ends of the panel are fixed on the protective cover. The door curtain is arranged vertically on the outside of the panel. The panel is located at the upper end of the door curtain, and the upper end of the door curtain is set on the panel. The lifting mechanism is connected to the door curtain and drives the door curtain to rise and fall, so that the door curtain moves from the lower end position to the upper end position to open and close the opening.

9. The automatic discharging system of a circular knitting machine according to claim 1, characterized in that: A gear lever assembly is further provided at one end of the cloth swing frame close to the opening. The gear lever assembly comprises a rotatable gear lever and a gear lever driving mechanism for driving the gear lever to rotate. The gear lever driving mechanism is located at the bottom of the cloth swing frame.

10. An automatic discharging method for a circular knitting machine, comprising the automatic discharging system according to claim 1, characterized in that: The automatic discharging method comprises the following steps: S1. The knitted fabric knitted by the circular knitting machine is pulled onto the cloth frame by the pulling roller, and the transmission mechanism drives the cloth frame to reciprocate so that the knitted fabric is automatically stacked on the cloth frame; S2. When the knitted fabric pulled out by the traction roller reaches a preset value, the transmission mechanism drives the cloth frame to stop moving; S3, the clamping drive mechanism drives the clamping seat to clamp the knitted fabric on the traction roller, and then the cutting mechanism cuts the knitted fabric from the traction roller, so that the knitted fabric falls completely onto the cloth rack; S4, the transmission mechanism continues to drive the cloth frame to move toward the opening of the protective cover; S5, the opening and closing device controls the opening of the protective cover to open, and the cloth pushing mechanism pushes the knitted fabric on the cloth swing frame out of the protective cover to complete the discharging process; S6. After the material is discharged, the transmission mechanism drives the cloth rack to return to the bottom of the traction roller, the cloth pushing mechanism returns to its original position, the opening and closing device controls the opening of the protective cover to close, the traction roller continues to pull the knitted fabric of the large circular machine onto the cloth rack, and the transmission mechanism drives the cloth rack to move back and forth and repeat the above S1 step.

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