Doffing structure of circular knitting machine

Abstract

The utility model discloses a doffing structure of a circular knitting machine, which comprises a rack, the rack is provided with a channel, an opening and closing device and a material guiding device, the material guiding device comprises a first material guiding frame and a second material guiding frame, the opening and closing device comprises a lifting unit, a panel and a door curtain, the door curtain is provided with a first end and a second end, and the lifting unit is connected with and drives the door curtain. The door curtain opens and closes the channel from the position of the second end to the position of the first end. The lifting unit is arranged to drive the door curtain to ascend and descend so as to open the channel, compared with a traditional outward door opening mode, the door curtain which ascends and descends is small in occupied space, operation intensity of the door curtain is reduced, time consumption is reduced, the effects of guaranteeing production efficiency and improving use safety can be achieved, and the lifting door curtain is more suitable for being used in small industrial factory buildings. Meanwhile, by arranging the material guiding device, the cloth of the circular knitting machine can be more automatically guided, workers do not need to enter the bottom of the circular knitting machine to take the cloth, the workload of the workers is reduced, the working efficiency is improved, and potential safety hazards are also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of large circular knitting machines, in particular to a cloth dropping structure of a large circular knitting machine. Background Art

[0002] Circular knitting machine, scientifically known as circular weft knitting machine, has developed rapidly due to its multiple loop forming systems, high speed, high output, fast pattern change, good fabric quality, few processes and strong product adaptability.

[0003] After the fabric is woven in the circular knitting machine, it needs to be reeled in by a reeling device to facilitate the subsequent transportation and storage of the fabric. The reeling roller on the reeling device needs to be removed after a certain amount of fabric has been reeled in, and then the removed fabric is introduced into an external collection device for collection.

[0004] At present, when taking out the rolled fabric on the large circular knitting machine, in order to improve the work efficiency. However, the opening and closing door of the large circular knitting machine is large in size, and it is assembled by opening the door outward, which occupies a large space and is not suitable for use in small industrial plants; at the same time, when taking out the fabric, some large circular knitting machines use automatic unloading to unload the winding roller and fabric on the large circular knitting machine, and the discharged winding roller and fabric lack a cloth dropping structure, so it is necessary to manually operate the fabric to be taken down. This process requires workers to enter the bottom of the large circular knitting machine to take out the fabric, which has a low degree of automation and low work efficiency, and also increases the workload of workers and increases safety hazards.

[0005] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which resulted in this case. Utility Model Content

[0006] In order to solve the problems existing in the background technology, the utility model proposes a cloth dropping structure of a circular knitting machine.

[0007] In order to achieve the above object, the utility model adopts the following technical solution:

[0008] A cloth dropping structure of a large circular knitting machine comprises a frame, the frame is provided with a channel for taking out cloth, the frame is provided with an opening and closing device for opening and closing the channel, and also comprises a material guiding device arranged in the channel area, the material guiding device comprises a first material guiding frame for unloading cloth and a second material guiding frame connected with the first material guiding frame, the opening and closing device comprises a lifting unit and a panel and a door curtain connected to each other, the door curtain has a first end close to the panel and a second end away from the panel, the lifting unit is connected to drive the door curtain to make the door curtain open and close the channel from the position of the second end to the position of the first end.

[0009] Preferably, the lifting unit includes a fixing frame fixedly connected to the panel, a screw rod arranged on the fixing frame, a slider sleeved on the screw rod and fixedly connected to the first end of the door curtain, and a motor driving the screw rod to rotate to drive the slider to move longitudinally, and the output shaft of the motor is connected to the screw rod shaft.

[0010] Preferably, there are two door curtains, namely a first door curtain fixedly connected to the panel and a second door curtain that can move longitudinally along the first door curtain to activate the passage.

[0011] Preferably, there are two opening and closing devices, which are symmetrically arranged on the frame, and the opening and closing devices are hinged to the corresponding side walls of the frame. A rotating unit is arranged between the two opening and closing devices to keep the two opening and closing devices covering the channel.

[0012] Preferably, the orientation of the first material guide rack is defined as the front, and the orientation of the second material guide rack is defined as the back;

[0013] A first connecting plate is extended backward on both sides of the end of the first material guide frame, and a second connecting plate is extended forward on both sides of the front end of the second material guide frame. The second connecting plate is arranged corresponding to the first connecting plate, and the first connecting plate and the corresponding second connecting plate are hinged by pins.

[0014] Preferably, the first material guide frame, the second material guide frame, the two first connecting plates, and the two second connecting plates form an accommodating space for the door curtain when it is lowered.

[0015] Preferably, a clearance groove is respectively provided between the two second connecting plates at the end of the door curtain, so that when the passage is closed, the clearance groove is clamped on the second connecting plate.

[0016] Preferably, a limiting plate for providing limiting support for the falling cloth is provided at the end of the second material guide frame, and the limiting plate is erected at the end of the second material guide plate.

[0017] Preferably, it also includes a control device and a detection device for detecting that the cloth has reached a set number of revolutions. The lifting unit, the rotating unit and the detection device are all electrically connected to the control device. After the detection device detects that the cloth winding machine has reached the set number of revolutions, the lifting unit or the rotating unit is driven to drive the door curtain to open and close the channel.

[0018] By adopting the above-mentioned design scheme, the beneficial effects of the utility model are: by setting a lifting unit to drive the door curtain to rise and fall, the passage is opened. Compared with the traditional way of opening the door outward, the door curtain that rises and falls occupies less space, reduces the operating intensity of the door curtain, reduces time consumption, and can ensure production efficiency and improve safety of use. It is more suitable for use in small industrial plants; at the same time, by setting a material guiding device, a more automated material guiding of the circular knitting machine is achieved, and workers do not have to enter the bottom of the circular knitting machine to take materials, which reduces the workload of workers, improves work efficiency, and reduces safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of closing the door curtain of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the utility model for opening the door curtain;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the material guiding device in the utility model;

[0023] In the figure: frame 1, channel 11, opening and closing device 2, lifting unit 21, fixing frame 211, screw rod 212, slider 213, panel 22, door curtain 23, first end 231, second end 232, first door curtain 233, second door curtain 234, make way groove 24, material guiding device 3, first material guiding frame 31, first connecting plate 311, accommodating space 312, second material guiding frame 32, pin 321, second connecting plate 322, limit plate 323, cloth 9. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0025] Reference Figures 1 to 4A cloth dropping structure of a large circular knitting machine includes a frame 1, the frame 1 is provided with a channel 11 for taking out cloth 9, the frame 1 is provided with an opening and closing device 2 for opening and closing the channel 11, the opening and closing device 2 includes a lifting unit 21 and a panel 22 and a door curtain 23 connected to each other, the door curtain 23 has a first end 231 close to the panel 22 and a second end 232 away from the panel 22, the lifting unit 21 is connected to drive the door curtain 23, so that the door curtain 23 moves from the position of the second end 232 to the position of the first end 231 to open and close the channel 11. It is worth noting that the door curtain 23 in this embodiment is at least one piece. In this embodiment, a two-piece door curtain 23 is used to explain the utility model in detail, and other feasible solutions are not described in detail here.

[0026] In this embodiment, two door curtains 23 are used, namely a first door curtain 233 fixedly connected to the panel 22 and a second door curtain 234 that can move longitudinally along the first door curtain 233 to activate the channel 11.

[0027] Furthermore, the lifting unit 21 includes a fixing frame 211 fixedly connected to the panel 22, a screw rod 212 arranged on the fixing frame 211, a slider 213 sleeved on the screw rod 212 and fixedly connected to the first end 231 of the door curtain 23, and a motor (not shown in the figure) driving the screw rod 212 to rotate to drive the slider 213 to move longitudinally along the screw rod 212. The output shaft of the motor is connected to the shaft of the screw rod 212 to drive the screw rod 212 to rotate, so that the slider 213 moves up and down along the longitudinal direction of the screw rod 212 to open and close the channel 11.

[0028] It is worth noting that there are two opening and closing devices 2 in this embodiment, and they are symmetrically arranged on the frame 1. The opening and closing devices 2 are hinged on the corresponding side walls of the frame 1, and a rotating unit (not shown in the figure) is arranged between the two opening and closing devices 2 to keep the two opening and closing devices 2 covering the channel 11. In this embodiment, the channel 11 can be opened and closed by lifting and lowering the lifting unit 21, or by rotating the rotating unit (traditional outward opening method) to open and close the channel. The two usage modes can be switched according to actual needs, making the product more convenient and flexible.

[0029] Furthermore, the present embodiment further comprises a material guiding device 3 arranged in the area of ​​the passage 11 , and the material guiding device 3 comprises a first material guiding frame 31 for unloading the cloth 9 and a second material guiding frame 32 connected to the first material guiding frame 31 .

[0030] For the convenience of description, the position where the first material guide rack 31 is set is defined as the front, and the position where the second material guide rack 32 is set is defined as the rear.

[0031] A first connecting plate 311 is extended backward on both sides of the end of the first material guide rack 31, and a second connecting plate 322 is extended forward on both sides of the front end of the second material guide rack 32. The second connecting plate 322 is arranged corresponding to the first connecting plate 311, and the first connecting plate 311 and the corresponding second connecting plate 322 are hinged by a pin 321.

[0032] Furthermore, the first material guide rack 31, the second material guide rack 32, the two first connecting plates 311 and the two second connecting plates 322 form a accommodating space 312 for the second door curtain 232 to be lowered, and the ends of the second door curtain 232 are respectively provided with a clearance groove 24 corresponding to the two second connecting plates 322, so that when the channel 11 is closed, the clearance groove 24 is stuck on the second connecting plate 322.

[0033] Furthermore, a limiting plate 323 is provided at the end of the second material guide rack 32 for providing limiting support for the falling cloth 9. The limiting plate 323 is erected at the end of the second material guide rack 32. When the rolled cloth 9 is lowered to the end surface of the first material guide rack 31 and the end surface of the second material guide rack 32, and continues to roll along the end surface of the second material guide rack 321 and contacts the limiting plate 323, the limiting plate 323 provides limiting support for the cloth 9, and the cloth 9 no longer continues to roll.

[0034] Furthermore, the end surface of the first material guide frame 31 and the end surface of the second material guide frame 32 are both inclined surfaces, and the inclination angles and widths are similar.

[0035] It is worth noting that the material guiding device 3 in this embodiment can also adopt the Chinese utility model patent (application number 202320894357.3), which is named as a material guiding device 3 for a large circular machine cloth winding device, which will not be described in detail here.

[0036] Furthermore, it also includes a control device and a detection device for detecting that the cloth 9 has reached a set number of revolutions. The lifting unit 21, the rotating unit and the detection device are all electrically connected to the control device. After the detection device detects that the cloth winding machine has reached a set number of revolutions, the lifting unit 21 or the rotating unit is driven to drive the door curtain 23 to open and close the channel 11. The detection device in this embodiment can be a pulse encoder or a photoelectric sensor.

[0037] By adopting the above-mentioned design scheme, the beneficial effects of the utility model are: by setting the lifting unit 21 to drive the door curtain 23 to rise and fall, the passage 11 is opened. Compared with the traditional way of opening the door outward, the door curtain 23 that rises and falls occupies less space, reduces the operation intensity of the door curtain 23, reduces time consumption, and can ensure production efficiency and improve safety of use, and is more suitable for use in small industrial plants; at the same time, by setting the material guiding device 3, a more automated material guiding of the cloth 9 of the large circular knitting machine is achieved, and workers do not have to enter the bottom of the large circular knitting machine to take materials, which reduces the workload of workers, improves work efficiency, and reduces safety hazards.

[0038] Although the 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cloth dropping structure of a circular knitting machine, comprising a frame, the frame is provided with a passage for taking out cloth, the frame is provided with an opening and closing device for opening and closing the passage, characterized in that: It also includes a material guiding device arranged in the channel area, the material guiding device includes a first material guiding frame for unloading cloth and a second material guiding frame connected to the first material guiding frame, the opening and closing device includes a lifting unit and a panel and a door curtain connected to each other, the door curtain has a first end close to the panel and a second end away from the panel, the lifting unit is connected to drive the door curtain to open and close the channel from the position of the second end to the position of the first end.

2. The cloth dropping structure of a circular knitting machine according to claim 1, characterized in that: The lifting unit includes a fixing frame fixedly connected to the panel, a screw rod arranged on the fixing frame, a slider sleeved on the screw rod and fixedly connected to the first end of the door curtain, and a motor driving the screw rod to rotate so as to drive the slider to move longitudinally, and the output shaft of the motor is connected to the screw rod shaft.

3. The cloth dropping structure of a circular knitting machine according to claim 1, characterized in that: There are two door curtains, namely a first door curtain fixedly connected to the panel and a second door curtain that can move longitudinally along the first door curtain to activate the passage.

4. The cloth dropping structure of a circular knitting machine according to claim 1, characterized in that: There are two opening and closing devices, which are symmetrically arranged on the frame. The opening and closing devices are hinged on the corresponding side walls of the frame. A rotating unit is arranged between the two opening and closing devices to keep the two opening and closing devices covering the channel.

5. The cloth dropping structure of a circular knitting machine according to claim 1, characterized in that: Define that the orientation of the first material guide rack is set to the front, and the orientation of the second material guide rack is set to the back; A first connecting plate is extended backward on both sides of the end of the first material guide frame, and a second connecting plate is extended forward on both sides of the front end of the second material guide frame. The second connecting plate is arranged corresponding to the first connecting plate, and the first connecting plate and the corresponding second connecting plate are hinged by pins.

6. The cloth dropping structure of a circular knitting machine according to claim 5, characterized in that: The first material guide frame, the second material guide frame, the two first connecting plates and the two second connecting plates form an accommodating space for the door curtain when it is lowered.

7. The cloth dropping structure of a circular knitting machine according to claim 5, characterized in that: The ends of the door curtain are respectively provided with clearance grooves corresponding to the two second connecting plates, so that when the passage is closed, the clearance grooves are clamped on the second connecting plates.

8. The cloth dropping structure of a circular knitting machine according to claim 5, characterized in that: A limiting plate for providing limiting support for the falling cloth is arranged at the end of the second material guide frame, and the limiting plate is erected at the end of the second material guide frame.

9. The cloth dropping structure of a circular knitting machine according to claim 4, characterized in that: It also includes a control device and a detection device for detecting when the cloth has reached a set number of revolutions. The lifting unit, the rotating unit and the detection device are all electrically connected to the control device. After the detection device detects that the cloth winding machine has reached a set number of revolutions, the lifting unit or the rotating unit is driven to drive the door curtain to open and close the passage.

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