Automatic discharge system of a drum machine

Abstract

The utility model discloses an automatic discharging system of big -round machine, including the protective cover, be equipped with frame and install the cloth mechanism of swinging of frame on the protective cover, the upper portion of frame is equipped with traction roller, clamping mechanism and cutting mechanism, still be equipped with cloth mechanism of pushing of swinging frame, be equipped with the opening of opening and be used for opening or closing opening's opening and closing device on the protective cover. Automatic discharging system of the utility model, through cloth mechanism swing automatically with the automatic stacking of knitwear on the cloth frame, again through clamping mechanism and cutting mechanism automatic knitwear clamping and cutting, opening and closing device open the opening of protective cover, transmission mechanism will swing frame move to the direction of opening, and the knitwear on cloth frame is pushed out to the protective cover outside big -round machine of cloth mechanism of pushing, realizes automatic discharging. Compared with the traditional manual discharging mode, the degree of automation is high, and a large amount of manpower and manual cost is saved, and work efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of large circular knitting machine technology, and specifically relates to an automatic material discharge system for a large circular knitting machine. Background Technology

[0002] The circular knitting machine, also known as a circular weft knitting machine or circular knitting weft machine, is a large machine commonly used in the knitting industry. The outside of the circular knitting machine has a safety door. The upper part of the circular knitting machine is the knitting area, and the lower part of the circular knitting machine has a traction roller and a spreading mechanism for pulling the knitted fabric out of the knitting area. The spreading 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] Once the fabric arrangement mechanism has accumulated a sufficient amount of knitted fabric, the unloading process begins. Currently, the unloading process on existing circular knitting machines is typically manual. Operators must open the machine's safety door, cut the knitted fabric, and remove the stacked fabric from the arrangement mechanism. This traditional unloading process is cumbersome, labor-intensive, and inefficient. Although some cutting aids are available, manual removal of the fabric from the machine is still necessary. Furthermore, since circular knitting machines operate 24 / 7, multiple operators are required to work in shifts, resulting in high labor costs. Therefore, designing a fully automated circular knitting machine for the unloading process is the problem this project aims to solve.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to the occurrence of this case. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic material discharge system for a large circular knitting machine, which can achieve automated material discharge, has a high degree of automation, and can greatly save manpower and labor costs.

[0006] To achieve the above objectives, this utility model adopts the following technical solution:

[0007] An automatic feeding system for a large circular knitting machine includes a protective cover. Inside the protective cover is a frame and a fabric stacking mechanism mounted on the frame for stacking knitted fabrics. The fabric stacking mechanism includes a fabric stacking frame and a transmission mechanism for driving the fabric stacking frame. The fabric stacking frame is slidably mounted on the lower part of the frame. The upper part of the frame 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 fabric stacking frame also includes a... A pusher mechanism pushes the knitted fabric out of the fabric rack. The pusher mechanism is slidably mounted on the fabric rack. The protective cover has an opening for the pusher mechanism to push the knitted fabric out, and an opening and closing device for opening or closing the opening. The clamping mechanism includes two clamping seats movably mounted below the traction roller, and a clamping drive mechanism for driving the two clamping seats to move towards or away from each other. The arrangement direction of the clamping seats is the same as the arrangement direction of the traction roller. The clamping seats move towards each other to clamp the knitted fabric.

[0008] The automatic feeding system also includes a central control terminal, and the transmission mechanism, the clamping mechanism, the cutting mechanism, the fabric pushing mechanism, and the opening and closing device are all connected to the central control terminal.

[0009] 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 fabric arrangement frame is slidably mounted 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 disposed on the first frame and the second frame.

[0010] Furthermore, the clamping drive mechanism includes a first clamping component disposed at one end of the clamping seat and a second clamping component disposed at the other end of the clamping seat, wherein the first clamping component is disposed on the first frame and the second clamping component is disposed on the second frame.

[0011] Furthermore, the first clamping assembly includes two obliquely arranged first clamping cylinders and first clamping plates respectively disposed at the output ends of the corresponding first clamping cylinders. The output ends of the first clamping cylinders are arranged obliquely upwards. The two first clamping cylinders are symmetrically arranged in an inverted V-shape with the outlet of the traction roller as the center. One end of the first clamping plate is a fixed end that is fixedly connected to the corresponding first clamping cylinder, and the other end is a rotating end that is rotatably connected to the first frame. The two clamping seats are respectively fixedly disposed on the fixed ends of the corresponding first clamping plates at one end corresponding to the first frame.

[0012] The second clamping assembly has the same structure as the first clamping assembly. The second clamping assembly includes two obliquely arranged second clamping cylinders and second clamping plates respectively disposed at the output ends of the corresponding second clamping cylinders. The output ends of the second clamping cylinders are arranged in an inverted V-shape facing obliquely upward. 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 that is fixedly connected to the corresponding second clamping cylinder, and the other end is a rotating end that is rotatably connected to the second frame. The two clamping seats are respectively fixed at one end of the second frame on the fixed end of the corresponding second clamping plate.

[0013] Furthermore, each of the two first clamping plates has a first abutment protruding on the opposite side of its fixed end. The first frame has a first limiting post below the outlet of the traction roller for the two first abutments to abut against. The first limiting post is located on the moving path of the two first abutments.

[0014] Each of the two second clamping plates has a second abutment protruding on one side of its fixed end facing each other. The second frame has a second limiting post below the outlet of the traction roller for the two second abutments to abut against. The second limiting post is located on the moving path of the two second abutments. 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 abutments abut against the two sides of the first limiting post, and the two second abutments abut against the two sides of the second limiting post.

[0015] Furthermore, the cutting mechanism is disposed below one of the clamping seats. 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 towards the other clamping seat. The other clamping seat is provided with a cutting channel for the cutter to extend into, and the cutting channel is arranged along the length direction of the clamping seat.

[0016] Furthermore, the fabric pushing mechanism includes a slidable support plate mounted on the fabric frame and a support plate driving mechanism for driving the support plate to move. The support plate is vertically arranged on the fabric frame at one end away from the opening. The fabric pushing mechanism also includes a push plate mounted on the support plate and a push plate driving mechanism for driving the push plate to move. The push plate is vertically arranged.

[0017] Furthermore, the opening and closing device includes a lifting mechanism and an overlapping panel and a curtain. The panel is arranged horizontally, with both ends of the panel fixed to the protective cover. The curtain is arranged vertically on the outside of the panel, with the panel located at the upper end of the curtain. The upper end of the curtain is set on the panel. The lifting mechanism is connected to the curtain and drives the curtain to rise and fall, so that the curtain moves from the lower end to the upper end to open and close the opening.

[0018] Furthermore, the end of the fabric rack near the opening is also provided with a stop lever assembly. The stop lever assembly includes a rotatably configured stop lever and a stop lever drive mechanism for driving the stop lever to rotate. The stop lever drive mechanism is located at the bottom of the fabric rack.

[0019] An automatic material discharge method for a large circular knitting machine, comprising the automatic material discharge system as described above, characterized in that the automatic material discharge method includes the following steps:

[0020] S1. The knitted fabric woven by the circular knitting machine is pulled onto the fabric rack by the traction roller. The transmission mechanism drives the fabric rack to reciprocate so that the knitted fabric is automatically stacked on the fabric rack.

[0021] S2. When the knitted fabric pulled out by the traction roller reaches the preset value, the transmission mechanism drives the fabric frame to stop moving.

[0022] 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 fabric rack.

[0023] S4. The transmission mechanism continues to drive the swing frame to move towards the opening of the protective cover;

[0024] S5. The opening and closing device controls the opening of the protective cover to open, and the pushing mechanism pushes the knitted fabric on the fabric rack out of the protective cover to complete the unloading process.

[0025] S6. After the material is discharged, the transmission mechanism drives the fabric frame to return to its original position below the traction roller, the fabric 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 circular knitting machine onto the fabric frame, and the transmission mechanism drives the fabric frame to move back and forth to repeat the above steps S1.

[0026] By adopting the aforementioned design scheme, the beneficial effects of this utility model are:

[0027] This invention's automatic feeding system automatically stacks knitted fabric onto a fabric rack via a fabric arrangement mechanism. Then, a clamping mechanism and a cutting mechanism automatically clamp and cut the fabric. An opening / closing device automatically opens the protective cover, a transmission mechanism moves the fabric rack towards the opening, and a pushing mechanism pushes the knitted fabric from the fabric rack outside the protective cover of the circular knitting machine, thus achieving automatic feeding. Compared to traditional manual feeding methods, this system offers a high degree of automation, saves significant manpower and labor costs, and greatly improves work efficiency.

[0028] Furthermore, the first abutment, the second abutment, the first limiting post, and the second limiting post are provided to limit the stroke of the two clamping seats and prevent the two clamping seats from moving too far in opposite directions, which would cause excessive clamping force and damage to the knitted fabric and other components.

[0029] Furthermore, the lifting mechanism also includes a sliding component for guiding the curtain to rise and fall. The sliding component not only guides the curtain to rise and fall, but also provides a certain load-bearing effect for the curtain, making the curtain more stable when it rises and falls. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the automatic material discharging system of this utility model, in which the curtain is in the raised state.

[0031] Figure 2 This is a schematic diagram of the automatic material discharging system of this utility model. The structure of the opening and closing device is omitted in the figure.

[0032] Figure 3 This is a schematic diagram of the automatic material discharge system of this utility model. The structure of the protective cover is omitted in the figure.

[0033] Figure 4 This is a schematic diagram of the automatic discharging system of this utility model from another perspective, with the structure of the protective cover omitted.

[0034] Figure 5 This is a schematic diagram of the opening and closing device in the automatic discharging system of this utility model.

[0035] Figure 6 This is a schematic diagram of the opening and closing device in the automatic discharging system of this utility model from another perspective.

[0036] Figure 7 for Figure 4 Enlarged view of point A in the middle.

[0037] In the picture:

[0038] 1-Frame; 10-Protective cover;

[0039] 11-First frame; 12-Second frame;

[0040] 13-Connecting frame; 14-First limiting post;

[0041] 2-Arching mechanism;

[0042] 20 - Traction roller; 21 - Arrangement frame;

[0043] 22-Transmission mechanism; 210-Mounting slot;

[0044] 211-Slide rail; 3-Cutting mechanism;

[0045] 30 - Open-end cylinder; 31 - Rodless cylinder;

[0046] 32-Cutter; 310-Moving base;

[0047] 4-Clamping seat; 41-Cutting channel;

[0048] 51-First clamping assembly;

[0049] 52 - Second clamping assembly; 511 - First clamping cylinder;

[0050] 512 - First clamping plate; 513 - First abutment;

[0051] 521 - Second clamping cylinder; 522 - Second clamping plate;

[0052] 6- Fabric pushing mechanism;

[0053] 61-Bearing plate; 62-Push plate;

[0054] 63 - Push plate drive mechanism; 611 - Horizontal section;

[0055] 612 - Vertical part; 7 - Opening and closing device;

[0056] 71-Lifting mechanism; 72-Panel;

[0057] 73-Door curtain; 74-Sliding assembly;

[0058] 711 - Mounting bracket;

[0059] 712 - Rack; 713 - Gear;

[0060] 714 - Lifting drive motor; 721 - Mounting plate;

[0061] 741 - Mounting base; 742 - Slide bar;

[0062] 743 - Long plate; 744 - Stop block;

[0063] 8-Gear lever assembly;

[0064] 81-Gear lever; 82-Gear lever drive mechanism;

[0065] 821 - Gear lever cylinder; 822 - Rotating shaft;

[0066] 823 - Fixed base; 824 - Swing plate. Detailed Implementation

[0067] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0068] like Figures 1 to 7 As shown, an automatic feeding system for a large circular knitting machine includes a protective cover 10. Inside the protective cover 10 is a frame 1 and a fabric stacking mechanism 2 mounted on the frame 1 for stacking knitted fabrics. The fabric stacking mechanism 2 includes a fabric stacking frame 21 and a transmission mechanism 22 for driving the fabric stacking frame 21. The fabric stacking frame 21 is slidably mounted on the lower part of the frame 1. The upper part of the frame 1 is provided with a traction roller 20 for pulling the knitted fabric. The fabric stacking mechanism 2 is used to reciprocate the knitted fabric pulled out by the traction roller 20, causing the knitted fabric to automatically stack. Specifically, the frame 1 includes a first frame 11 and a second frame 12 arranged opposite to each other, and a connection to the first frame 11... A connecting frame 13 is provided between the first frame 11 and the second frame 12. The connecting frame 13 is located at the lower part of the first frame 11 and the second frame 12. The fabric arrangement frame 21 is slidably mounted on the connecting frame 13. It should be noted that the automatic feeding system of this utility model is an improvement on the existing circular knitting machine. The automatic feeding system is located at the lower part of the inner side of the circular knitting machine and is used to automatically stack the knitted fabric woven in the upper knitting area of ​​the circular knitting machine and automatically push the stacked knitted fabric out of the protective cover 10. The fabric arrangement mechanism 2 and the frame 1 in this utility model are preferably the same as those disclosed by the applicant in the authorized announcement number "CN". The servo fabric arranging machine disclosed in Chinese Utility Model Patent Application No. 217534942U, entitled "A Servo Arrangement Machine" (the arrangement mechanism in that patent is the arrangement mechanism 2 of this application, and the frame in that patent is the frame 1 of this application) will not be described in detail here. The arrangement mechanism 2 in this application can also adopt other conventional structures in the field, as long as it enables the arrangement mechanism 2 to automatically stack the knitted fabric pulled out by the traction roller 20 onto the arrangement frame 21.

[0069] The traction roller 20 is rotatably mounted on the upper part of the frame 1, and the two ends of the traction roller 20 are respectively rotatably mounted between the first frame 11 and the second frame 12. The traction roller 20 adopts a conventional structure in the art, as long as it can pull out the knitted fabric woven by the circular knitting machine. Specifically, in this utility model, the traction roller 20 consists of two adjacent 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 pulled out from below the traction channel to the fabric frame 21.

[0070] like Figures 1 to 4 As 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. Both the clamping mechanism and the cutting mechanism 3 are connected to the upper part of the frame 13. Specifically, in this utility model, the clamping mechanism includes two clamping seats 4 movably disposed below the traction roller 20 and a clamping drive mechanism for driving the two clamping seats 4 to move towards 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 towards each other to clamp the knitted fabric located below the traction roller 20. Specifically, the clamping drive mechanism includes a first clamping component 51 disposed at one end of the clamping seat 4 and a second clamping component 52 disposed at the other end of the clamping seat 4. The first clamping component 51 is disposed on the first frame 11, and the second clamping component 52 is disposed on the second frame 12. The first clamping component 51 and the second clamping component 52 are connected to the upper part of the frame 13. The two clamping components 52 operate synchronously, thereby driving the two clamping seats 4 to move. Specifically, the first clamping component 51 includes two obliquely arranged first clamping cylinders 511 and first clamping plates 512 respectively disposed at the output ends of the corresponding first clamping cylinders 511. The output ends of the first clamping cylinders 511 are arranged obliquely upward. The two first clamping cylinders 511 are symmetrically arranged with the traction channel of the traction roller 20 as the center and are both inclined outward in an inverted V 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 clamping seat 4 is fixedly disposed at one end of the first frame 11 on the fixed end of the corresponding first clamping plate 512, and the other clamping seat 4 is fixedly disposed at one end of the first frame 11 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.

[0071] 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 disposed at the output ends of the corresponding second clamping cylinders 521. The output ends of the two second clamping cylinders 521 are arranged obliquely upward and are both inclined outward in an inverted V shape. The two second clamping cylinders 521 are symmetrically arranged with the traction channel of the traction roller 20 as the center. Correspondingly, 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. The two clamping seats 4 are respectively fixedly disposed on the fixed ends of the corresponding second clamping plates 522 at one end of the second frame 12.

[0072] like Figure 4 and Figure 7 As shown, the cutting mechanism 3 is fixedly mounted below 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 fixedly mounted on the output end of the rodless cylinder 31. The rodless cylinder 31 is arranged along the length of the clamping seat 4. One end of the rodless cylinder 31 is fixedly mounted on the first clamping plate 512, and the other end is fixedly mounted on the second clamping plate 522. The cutter 32 extends out of the rodless cylinder 31 and is positioned towards the other clamping seat 4. The other clamping seat 4 is correspondingly provided with a cutting channel 41 for the cutter 32 to extend into. The cutting channel 41 is arranged along the length 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. Then, the cutter 32 is driven by the rodless cylinder 31 to cut the knitted fabric. Setting the cutting channel 41 for the cutter 32 to extend into can improve the stability of the cutter 32 during cutting. It should be noted that in actual use, the cutting mechanism 3 can also be set on both sides of the two clamping seats 4 to better complete the cutting action. It should be noted that the rodless cylinder 31 mentioned above can be a rodless cylinder 31 that is conventionally available on the market. Correspondingly, such as Figure 7 As shown, the rodless cylinder 31 has a base, and the output end of the rodless cylinder 31 has a movable seat 310 that can move along the base. The cutter 32 is fixed on the movable seat 310 of the rodless cylinder 31. The cutter 32 passes through the base of the rodless cylinder 31 and is set towards 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 this utility model can also adopt the structure of other conventional cutting mechanisms 3 in the field, as long as it can cut the knitted fabric on the traction roller 20.

[0073] The first clamping assembly 51 and the second clamping assembly 52 operate synchronously. Taking the operation of the first clamping assembly 51 as an example, when the knitted fabric is not clamped, both first clamping cylinders 511 are extended, and both clamping seats 4 are located away from the traction channel of the traction roller 20. When it is necessary to clamp and cut the knitted fabric, both first clamping cylinders 511 retract synchronously, causing the fixed ends of the two first clamping plates 512 to rotate towards the traction channel of the traction roller 20, thus clamping the fabric. The movement of seat 4 causes the two clamping seats 4 to move towards each other, thereby clamping 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 of the rodless cylinder 31 and the other clamping seat 4. After clamping the knitted fabric, the cutting drive mechanism can be activated 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.

[0074] Preferred, such as Figure 3 and Figure 4 As shown, the first clamping assembly 51 also includes a first abutment 513. Specifically, the fixed ends of the two first clamping plates 512 each have a first abutment 513 protruding on their opposite sides. A first limiting post 14 is provided below the channel of the traction roller 20 on the first frame 11 for the two first abutments 513 to abut against. The first limiting post 14 is located on the moving path of the two first abutments 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 each have a second abutment 513 protruding on their opposite sides (not shown in the figure). A first limiting post 14 is provided below the channel of the traction roller 20 on the second frame 12 for the two first abutments 513 to abut against. Two second limiting posts (not shown in the figure) are abutted by the two second abutment tops. The second limiting posts are symmetrically arranged with the first limiting post 14 and are located on the moving path of the two second abutment tops. When the two first clamping cylinders 511 and the two second clamping cylinders 521 operate simultaneously to drive the two clamping seats 4 to clamp the knitted fabric, the two first abutment tops 513 abut against the two sides of the first limiting post 14, and the two second abutment tops 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 just clamp the knitted fabric, avoiding excessive clamping force caused by excessive movement of the two clamping seats 4 towards each other, which could damage the knitted fabric and other parts.

[0075] like Figures 1 to 4As shown, the fabric rack 21 is also provided with a pusher mechanism 6 for pushing the knitted fabric out of the fabric rack 21. The pusher mechanism 6 is slidably arranged on the fabric rack 21. Specifically, the pusher mechanism 6 includes a support plate 61 slidably arranged on the fabric rack 21 and a support plate drive mechanism for driving the support plate 61 to move. The support plate 61 is arranged vertically on the fabric rack 21 at one end away from the opening 30. Preferably, the support plate 61 is an L-shaped plate. The L-shaped support plate 61 includes a horizontally arranged horizontal part 611 and a vertically arranged vertical part 612. The horizontal part 611 is used to support the knitted fabric, and the vertical part 612 is used to block the knitted fabric and prevent the knitted fabric from falling to the outside of the fabric rack 21.

[0076] Preferably, the structure of the support plate driving mechanism is as follows: two mounting slots 210 are installed on the sway frame 21, and each mounting slot 210 is provided with a slide rail 211. The setting direction of the two slide rails 211 is the same as the moving direction of the sway frame 21, and the two slide rails 211 are arranged alternately along the length direction of the connecting frame 13. Each slide rail 211 is equipped with a slider (not shown in the figure), that is, two sliders. The two sliders are respectively fixedly connected to the bottom of the horizontal part 611 of the support plate 61. The fixed connection structure between the horizontal part 611 and the two sliders adopts the existing conventional connection structure, such as screw connection or pin connection. The support plate driving mechanism also includes a driving device (not shown in the figure) for driving the two sliders to move synchronously. The driving device can be a conventional motor or cylinder in the art. Correspondingly, the driving device is set at the position of the two sliders, and the output end of the driving device is connected to the corresponding slider to drive the slider and the support plate to move. The support plate driving mechanism can also adopt other conventional structures in the art, as long as it can drive the support plate 61 to move.

[0077] Preferably, the pusher mechanism 6 further includes a pusher plate 62 disposed on the support plate 61 and a pusher plate drive mechanism 63 for driving the pusher plate 62 to move. Specifically, the pusher plate 62 is vertically arranged on the vertical part 612 of the support plate 61 near the horizontal part 611, and the pusher plate drive mechanism 63 is horizontally arranged on the vertical part 612 and located in the middle of the vertical part 612, for pushing the pusher plate 62 to push the knitted fabric out. The pusher plate 62 is fixed to the output end of the pusher plate drive mechanism 63. It should be noted that the pusher plate drive mechanism 63 in this embodiment can all be conventional cylinders in the art.

[0078] like Figure 1 , Figure 5 and Figure 6As shown, the protective cover 10 has an opening 30 for the fabric pushing mechanism 6 to push out the knitted fabric, 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 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 curtain 73 is arranged vertically on the outside of the panel 72. The panel 72 is located at the upper end of the curtain 73, and the upper end of the curtain 73 overlaps the panel 72. The lifting mechanism 71 is connected to the curtain 73 and drives the curtain 73 to rise and fall, so that the curtain 73 moves from the lower end to the upper end to open and close the opening 30.

[0079] Specifically, the lifting mechanism 71 includes a vertically arranged mounting frame 711, a rack 712 fixed on the mounting frame 711, a gear 713 meshing 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 fixedly installed inside the panel 72. 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, realizing the opening and closing of the opening 30. Preferably, a mounting plate 721 extends downward from the outer side of the panel 72. The lifting mechanism 71 also includes a sliding mechanism on the mounting plate 721 for guiding the door curtain 73 to move up and down. Component 74, the sliding component 74 includes a mounting base 741 fixed on the mounting plate 721 and a sliding rod 742 slidably mounted on the mounting base 741. The sliding rod 742 is arranged vertically, and correspondingly, the part of the sliding rod 742 corresponding to the curtain 73 has a long plate 743 for mounting the curtain 73. The curtain 73 is fixed on the long plate 743. Both the upper and lower ends of the sliding rod 742 are provided with stops 744 to prevent the sliding rod 742 from falling off the mounting base 741. The sliding component 74 not only guides the curtain 73 to rise and fall, but also provides a certain load-bearing effect for the curtain 73, making the curtain 73 more stable when rising and falling. It should be noted that the opening and closing device 7 in this embodiment has two sets, and each set of opening and closing device 7 is provided with two sets of lifting mechanisms 71 to improve the stability of the curtain 73 when rising and falling.

[0080] It should be noted that, in addition to the structure described in the above embodiments, the protective cover 10 and the opening and closing device 7 in this utility model can also adopt the structure disclosed in the applicant's Chinese utility model patent application with authorization announcement number "CN222332228U" entitled "A Fabric 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 this utility model can also adopt other conventional structures in the field, as long as the protective cover 10 can open an opening 30 for the fabric pushing mechanism 6 to push out the knitted fabric, and the opening and closing device 7 can close the opening 30 after the knitted fabric is pushed out.

[0081] Preferred, such as Figure 3 As shown, a stop assembly 8 is also provided at one end of the fabric frame 21 near the opening 30. The stop assembly 8 is provided to block one side of the knitted fabric when the fabric frame 21 moves, preventing the knitted fabric from falling to the outside of the fabric frame 21 during reciprocating movement. The stop assembly 8 includes a rotatable stop lever 81 and a stop lever drive mechanism 82 for driving the stop lever 81 to rotate. The stop lever drive mechanism 82 is located at the bottom of the fabric frame 21. The stop lever drive mechanism 82 uses a conventional motor or cylinder, as long as it can make... The stop lever 81 can be rotated; preferably, in this embodiment, there are two sets of stop lever assemblies 8, which are spaced apart at the bottom of the fabric frame 21 near the opening 30. The two stop levers 81 are respectively fixed to the output ends of the two stop lever drive mechanisms 82, and the two stop levers 81 extend upward from the bottom of the fabric frame 21 to block the knitted fabric. The stop lever drive mechanism 82 includes a stop lever cylinder 821, a rotating shaft 822 located at the output end of the stop lever cylinder 821, and a fixing device for fixing the rotating shaft 822. The fixed seat 823, the rotating shaft 822 and the stop lever cylinder 821 are arranged perpendicularly. The output end of the stop lever cylinder 821 is rotatably connected to one end of the rotating shaft 822 through a swing plate 824. The stop lever cylinder 821 and the rotating shaft 822 are respectively located at both ends of the swing plate 824. The other end of the rotating shaft 822 is fixedly connected to the stop lever 81. When the stop lever cylinder 821 extends, it drives the rotating shaft 822 to rotate through the swing plate 824. The rotation of the rotating shaft 822 drives the stop lever 81 to rotate. When the material discharge process is not performed, the stop lever 81... In the initial state, the stop lever 81 is vertically arranged, which can block the knitted fabric on the fabric frame 21. When the fabric frame 21 moves to the opening 30 near the protective cover 10 to prepare for material discharge, the stop lever cylinder 821 extends, causing the stop lever 81 to rotate downward to the bottom of the fabric frame 21, so that the pusher mechanism 6 can push the knitted fabric out. Preferably, in this embodiment, there are two sets of stop lever assemblies 8. The two stop lever assemblies 8 are arranged at intervals along the length of the fabric frame 21, and the two sets of stop lever assemblies 8 operate synchronously.

[0082] The automatic feeding system of this utility model also includes a main control terminal. Correspondingly, the main control terminal is electrically connected to the control system of the existing large circular knitting machine. The aforementioned transmission mechanism 22, first clamping cylinder 511, second clamping cylinder 521, cutting drive mechanism (i.e., rodless cylinder 31), drive device, push plate drive mechanism 63, stop cylinder 821, and opening and closing device 7 are all connected to the main control terminal. In this embodiment, the main control terminal can adopt an existing conventional control system, such as single-chip microcomputer control or PLC control.

[0083] This utility model also proposes an automatic material discharge method for a large circular knitting machine, including the aforementioned automatic material discharge system. The automatic material discharge method includes the following steps:

[0084] S1. The knitted fabric woven by the circular knitting machine is pulled onto the fabric rack 21 by the traction roller 20. The transmission mechanism 22 drives the fabric rack 21 to reciprocate so that the knitted fabric is automatically stacked on the fabric rack 21. The stop bar 81 is in the initial state, blocking the knitted fabric on the fabric rack 21.

[0085] S2. When the knitted fabric pulled out by the traction roller 20 reaches the preset value, the transmission mechanism 22 drives the fabric frame 21 to stop moving.

[0086] S3. The first clamping component 51 and the second clamping component 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 moving 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 rack 21.

[0087] S4. The transmission mechanism 22 continues to drive the swing frame 21 to move towards the opening 30 of the protective cover 10. The action of the stop cylinder 821 drives the rotating shaft 822 to rotate, causing the stop lever 81 to rotate downward to the bottom of the swing frame 21.

[0088] S5. The lifting drive motor 714 drives the gear 713 to drive the rack 712, the mounting bracket 711 and the curtain 73 to rise, so that the opening 30 opens. The support plate drive mechanism drives the support plate 61 to move the knitted fabric quickly to a position close to the opening 30. The push plate drive mechanism 63 extends so that the push plate 62 pushes the knitted fabric on the support plate 61 out of the protective cover 10 to complete the unloading process.

[0089] S6. After the material is discharged, the transmission mechanism 22 drives the fabric frame 21 to return to its original position, the bearing plate drive mechanism drives the bearing plate 61 to return to its original position, the push plate drive mechanism 63 retracts and drives the push plate 62 to return to its original position, the lifting mechanism 71 controls the curtain 73 to descend so that the opening 30 is closed, and then the traction roller 20 continues to pull the knitted fabric of the circular knitting machine onto the fabric frame 21. The transmission mechanism 22 drives the fabric frame 21 to move back and forth, repeating the above steps S1.

[0090] This utility model's automatic feeding system automatically stacks knitted fabric onto a fabric rack 21 via a fabric arrangement mechanism 2. Then, a clamping mechanism and a cutting mechanism 3 automatically clamp and cut the knitted fabric. An opening / closing device 7 automatically opens the opening 30 of the protective cover 10. A transmission mechanism 22 moves the fabric rack 21 towards the opening 30, and a pushing mechanism 6 pushes the knitted fabric from the fabric rack 21 outside the protective cover 10 of the circular knitting machine, thus achieving automatic feeding. Compared to traditional manual feeding methods, this system boasts a high degree of automation, saves significant manpower and labor costs, and greatly improves work efficiency.

[0091] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding system for a large circular knitting machine, comprising a protective cover, wherein a frame and a fabric stacking mechanism mounted on the frame are provided inside the protective cover, characterized in that, The fabric arrangement mechanism includes a fabric arrangement frame and a transmission mechanism for driving the fabric arrangement frame to move. The fabric arrangement frame is slidably mounted on the lower part of the machine frame. The upper part of the machine frame 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 fabric arrangement frame is also provided with a pusher mechanism for pushing the knitted fabric out of the fabric arrangement frame. The pusher mechanism is slidably mounted on the fabric arrangement frame. The protective cover has an opening for the pusher mechanism to push the knitted fabric out of the fabric, and an opening and closing device for opening or closing the opening. The clamping mechanism includes two clamping seats movably mounted below the traction roller, and a clamping drive mechanism for driving the two clamping seats to move towards or away from each other. The arrangement direction of the clamping seats is the same as the arrangement direction of the traction roller. The clamping seats move towards each other to clamp the knitted fabric. The automatic feeding system also includes a central control terminal, and the transmission mechanism, the clamping mechanism, the cutting mechanism, the fabric pushing mechanism, and the opening and closing device are all connected to the central control terminal.

2. The automatic discharge system for a large circular kiln according to claim 1, characterized in that, The frame includes a first frame and a second frame arranged opposite to each other, and a connecting frame connecting 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 fabric rack is slidably mounted 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 disposed on the first frame and the second frame.

3. The automatic discharge system for a large circular kiln according to claim 2, characterized in that, The clamping drive mechanism includes a first clamping component disposed at one end of the clamping seat and a second clamping component disposed at the other end of the clamping seat. The first clamping component is disposed on the first frame and the second clamping component is disposed on the second frame.

4. The automatic discharge system for a large circular kiln according to claim 3, characterized in that, The first clamping assembly includes two obliquely arranged first clamping cylinders and first clamping plates respectively disposed 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 V-shape with the outlet of the traction roller as the center. One end of the first clamping plate is a fixed end that is fixedly connected to the corresponding first clamping cylinder, and the other end is a rotating end that is rotatably connected to the first frame. The two clamping seats are respectively fixedly disposed 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. The second clamping assembly includes two obliquely arranged second clamping cylinders and second clamping plates respectively disposed at the output ends of the corresponding second clamping cylinders. The output ends of the second clamping cylinders are arranged in an inverted V-shape facing obliquely upward. 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 that is fixedly connected to the corresponding second clamping cylinder, and the other end is a rotating end that is rotatably connected to the second frame. The two clamping seats are respectively fixed at one end of the second frame on the fixed end of the corresponding second clamping plate.

5. The automatic discharge system for a large circular kiln according to claim 4, characterized in that, The two first clamping plates have a first abutment protruding on the opposite side of their fixed ends. The first frame is provided with a first limiting post below the outlet of the traction roller for the two first abutments to abut against. The first limiting post is located on the moving path of the two first abutments. Each of the two second clamping plates has a second abutment protruding on one side of its fixed end facing each other. The second frame has a second limiting post below the outlet of the traction roller for the two second abutments to abut against. The second limiting post is located on the moving path of the two second abutments. 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 abutments abut against the two sides of the first limiting post, and the two second abutments abut against the two sides of the second limiting post.

6. The automatic discharge system of a large circular kiln according to claim 1, characterized in that, The cutting mechanism is disposed below one of the clamping seats. 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. The cutter is arranged towards the other clamping seat. The other clamping seat is provided with a cutting channel for the cutter to extend into. The cutting channel is arranged along the length direction of the clamping seat.

7. The automatic discharge system for a large circular kiln according to claim 1, characterized in that, The fabric pushing mechanism includes a slidable support plate mounted on the fabric frame and a support plate driving mechanism for driving the support plate to move. The support plate is vertically arranged on the fabric frame at one end away from the opening. The fabric pushing mechanism also includes a push plate mounted on the support plate and a push plate driving mechanism for driving the push plate to move. The push plate is vertically arranged.

8. The automatic discharge system of a large circular kiln according to claim 1, characterized in that, The opening and closing device includes a lifting mechanism and an overlapping panel and a curtain. The panel is arranged horizontally, and both ends of the panel are fixed to the protective cover. The curtain is arranged vertically on the outside of the panel. The panel is located at the upper end of the curtain, and the upper end of the curtain is set on the panel. The lifting mechanism is connected to the curtain and drives the curtain to rise and fall, so that the curtain moves from the lower end to the upper end to open and close the opening.

9. The automatic discharge system of a large circular kiln according to claim 1, characterized in that, The fabric frame is also provided with a stop lever assembly at one end near the opening. The stop lever assembly includes a rotatably mounted stop lever and a stop lever drive mechanism for driving the stop lever to rotate. The stop lever drive mechanism is located at the bottom of the fabric frame.

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