Pneumatic control cloth expanding device for artificial fur machine

Abstract

The utility model discloses a pneumatic control cloth expanding device for an artificial fur machine, and belongs to the field of weaving machine equipment. The device mainly comprises a pneumatic control cloth expanding bag, a fixing part and an air inlet part. The pneumatic type control cloth expanding bag is made of soft, comfortable and elastic airtight leather materials and is expanded into a regular cylinder shape after being inflated. The size of the cylindrical cloth expanding bag is slightly larger than the cylinder diameter of a weaving instrument, the lower-section cloth is clamped in the middle by the traction leather roller and is in a natural horn mouth shape in the clamped state, and the cloth expanding path ensures that the tension and the holding force borne by the fur grey cloth in the whole cloth expanding process from the cylindrical shape to the plain cloth shape are uniform and consistent. And meanwhile, the air pressure in the cloth expanding bag is constant, so that the adjustment and uniformity of the fur cloth expanding tension can be quickly and flexibly controlled. The pneumatic control cloth expanding device provided by the utility model can provide a cloth expanding effect with soft, comfortable, uniform and lossless tension, and the problems of uneven cloth cover and the like caused by overlarge or uneven tension and holding force are effectively reduced.

Description

Technical Field

[0001] This utility model relates to a pneumatic control spreading device for artificial fur machines, belonging to the field of weaving equipment. Background Technology

[0002] Currently, in the field of circular knitting machines, existing spreading devices are not ideal for handling wide-width, slightly elastic fabrics, resulting in insufficient gripping force during the spreading process. This often leads to appearance problems such as uneven loop size, weft skew, and inconsistent fabric thickness, affecting the quality and aesthetics of the fabric. This is especially true for artificial fur machines, where the spreading device plays a crucial role in processing thicker, heavier artificial fur with higher quality requirements.

[0003] In the production process of a circular knitting machine, the function of the spreading device is to widen the fabric width to evenly distribute the fabric tension and minimize fabric defects such as weft skew. Existing spreading devices generally have two main structural forms: flat-oval spreading frames and square spreading frames. While these two structures can regulate fabric tension to some extent, the tension distribution remains significantly insufficient and uneven in certain areas and when spreading certain fabrics. For example, the tension difference between the two ends and the middle area of ​​a flat-oval spreading frame is large, causing uneven tension during the spreading process; while square spreading frames face the problem of tension imbalance between the four corners and the center area.

[0004] Chinese utility model patent CN218478865U discloses a spreading device for a circular knitting machine, which controls the spreading of the fabric by adjusting the movement of spreading rings on both sides. However, this spreading device, like a square spreading frame, still faces the problem of tension imbalance between the corners and the central area. In general, existing spreading devices still struggle to completely overcome problems such as uneven tension, inappropriate fit, and weft skew. Further optimization of the spreading device design is needed to better adapt to the needs of fabric production and ensure the stability and consistency of fabric quality. Utility Model Content

[0005] Therefore, the purpose of this application is to provide a pneumatically controlled spreading device for an artificial fur machine to solve the problems existing in the prior art.

[0006] The first objective of this application is to provide a pneumatic control spreading device for an artificial fur machine, comprising a pneumatic control spreading bag, a fixing component, and an air inlet component; wherein, the pneumatic control spreading bag is an airtight bag that becomes cylindrical after inflation, disposed inside the syringe of the artificial fur machine, and located above the pulling roller of the artificial fur machine; the fixing component includes a fixing connecting rod for fixing the pneumatic control spreading bag, and the air inlet component includes an air valve port and an air pipe for inflating and deflating the pneumatic control spreading bag.

[0007] In one implementation, the size of the pneumatically controlled fabric spreader bag is larger than the diameter of the artificial fur machine.

[0008] In one implementation, the upper bottom surface of the pneumatically controlled spreading bag is made of hard leather, while the lower bottom surface and sides are made of soft leather.

[0009] In one implementation, one, two, or more fixed connecting rods are provided, which are fixedly connected to the upper bottom surface made of hard leather to fix the pneumatically controlled spreading bag, and the other end of the fixed connecting rod is fixed to the suspension beam above the artificial fur machine.

[0010] In one implementation, the air valve port is located on the pneumatically controlled spreading bag, and the air pipe is connected to the pneumatically controlled spreading bag through the air valve port.

[0011] The second objective of this application is to provide a pneumatically controlled spreading device for an artificial fur machine with an alternative structure, comprising a pneumatically controlled spreading bag, an inflation device, a protective device for the inflation device, and a fixing component; the pneumatically controlled spreading bag is an airtight bag that becomes cylindrical after inflation, disposed inside the syringe of the artificial fur machine, and located above the traction roller of the artificial fur machine; the inflation device is disposed inside the pneumatically controlled spreading bag, and the pneumatically controlled spreading bag is provided with an air inlet.

[0012] In one implementation, the protective device for the inflation device is a breathable mesh bag, and the fixing component includes an annular groove fixing component and a foam fixing component. The foam fixing component is used to fix the inflation device inside the protective component, and the annular groove fixing component is used to isolate the protective component and the inflation device inside from the contact range of the artificial fur machine's pull roller, so as to prevent the inflation device from colliding with the pull roller below the pneumatically controlled fabric bag.

[0013] In one implementation, the pneumatically controlled spreading bag is made entirely of a soft, elastic leather material, and the size of the pneumatically controlled spreading bag is larger than the diameter of the artificial fur machine.

[0014] In one implementation, the air inlet can be switched on and off using a rotary valve.

[0015] The beneficial effects of this utility model are:

[0016] (1) The pneumatic control spreading device for artificial fur machine provided by this utility model is made of soft, comfortable and elastic leather material, which can spread artificial fur with gentle tension, comfort, uniformity and no damage, and reduce the damage to the fabric caused by excessive tension and gripping force.

[0017] (2) The pneumatic control spreading device for artificial fur machine provided by this utility model provides internal air pressure through an air inlet component with constant air pressure, which can ensure that the air pressure inside the spreading device remains constant according to the set value, and can quickly and flexibly control the adjustment and uniformity of the spreading tension of the fur cloth.

[0018] (3) The pneumatic control spreading device for artificial fur machine provided by this utility model has a natural trumpet shape at the lower end in the clamping state. The trumpet shape is the key to ensuring uniform tension of the spreading device for fur cloth. It can make the fur cloth be pulled from the cylindrical spreading into a flat cloth shape and collected in a scientific way after it comes off the machine, ensuring that the tension and gripping force on the fur cloth are uniform throughout the spreading process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a pneumatic control spreading device for a man-made wool machine provided in Embodiment 1 of this application; wherein 1, pulling rod; 2, pneumatic control spreading bag; 3, air valve port; 4, air pipe; 5, fixed connecting rod; 6, leather cover.

[0020] Figure 2 This application provides a schematic diagram of the basic shape changes of a pneumatically controlled spreading bag for a man-made felt machine; wherein a) is the free state of the pneumatically controlled spreading bag; and b) is the state in which the pneumatically controlled spreading bag is held by the pulling roller.

[0021] Figure 3 These are different perspective views of the pneumatically controlled fabric spreading bag being held by the pulling roller, where a is the front view and b is the side view.

[0022] Figure 4 This is a schematic diagram of a pneumatic control spreading device for a man-made felt machine provided in Embodiment 2 of this application; wherein 7 is a pneumatic control spreading bag; 8 is an inflation device; 9 is a protective component of the inflation device; 10 is a circular groove fixing component of the protective component; 11 is a foam fixing component inside the protective component; 12 is a pulling rod; 13 is an openable leather cover; and 14 is an opening. Detailed Implementation

[0023] 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.

[0024] Example 1:

[0025] like Figure 1As shown, the pneumatic control spreading device for an artificial fur machine provided in this embodiment mainly includes a pneumatic control spreading bag 2, a fixing component, and an air inlet component. The fixing component includes a fixing connecting rod 5, which can be one or more. The air inlet component includes an air valve port 3 and an air pipe 4. The air valve port 3 is located on the pneumatic control spreading bag 2, and the air pipe 4 is connected to the pneumatic control spreading bag 2 through the air valve port 3. The pneumatic control spreading bag 2 is an airtight bag that expands into a cylindrical shape after air is introduced, such as... Figure 2 As shown in (a) in the figure. The cylindrical spreading bag is larger than the diameter of the artificial fur machine in order to achieve effective spreading; for easy fixation, the upper bottom surface of the cylindrical pneumatic control spreading bag 2 is made of a harder leather material (such as leather), called leather cover 6, while the lower bottom surface and sides are made of a softer and more elastic leather material, such as suede.

[0026] When the fabric expansion begins, the pneumatically controlled expansion bag 2 is held in place by the pull roller 1 below, preventing it from detaching. Figure 2 As shown, the pneumatically controlled spreading bag 2 is clamped into a funnel shape by the pulling roller 1, as... Figure 2 As shown in (b) of the diagram. The clamping position of the traction roller 1 on the pneumatically controlled spreading bag 2 is not limited, as long as it ensures that the pneumatically controlled spreading bag 2 does not easily detach from the traction roller 1 after inflation. The pneumatically controlled spreading bag 2 is installed entirely inside the syringe of the artificial fur machine and is connected and fixed to the suspension beam above the artificial fur machine via the left and right fixed connecting rods 5. The fixed connecting rods 5 are connected to the leather cover 6 above the pneumatically controlled spreading bag 2, serving to fix the pneumatically controlled spreading bag 2. The bottom and sides of the pneumatically controlled spreading bag 2 are made of soft, comfortable, and elastic leather material, which can provide a gentle, comfortable, uniform, and damage-free spreading effect on the artificial fur. The front view and side view of the pneumatically controlled spreading bag 2 clamped by the traction roller 1 are shown in the diagram. Figure 3 As shown in (a) and (b).

[0027] Example 2:

[0028] Based on the design scheme of Embodiment 1, in order to reduce modifications to the artificial felt machine (for example, in the pneumatic control spreading device provided in Embodiment 1, the connection between the fixed connecting rod and the upper suspension beam requires welding on the artificial felt machine), and considering that the pneumatic control spreading device in Embodiment 1 is connected to the external inflation device through an air pipe, issues such as air pipe path interference and inflation device placement interference need to be considered, therefore, the pneumatic control spreading device is optimized in this embodiment.

[0029] like Figure 4As shown, this embodiment provides a pneumatic control spreading device for an artificial fur machine, mainly including a pneumatic control spreading bag 7, an inflation device 8 disposed inside the pneumatic control spreading bag 7, and a protective component 9 and a fixing component for the inflation device 8. The fixing component includes a circular groove fixing component 10 and a foam fixing component 11. The foam fixing component 11 is used to fix the inflation device 8 inside the protective component 9. The circular groove fixing component 10 is used to isolate the protective component 9 and the inflation device 8 inside from the contact range of the pull roller 12 to prevent the inflation device 8 from colliding with the pull roller 12 below the pneumatic control spreading bag 7.

[0030] The pneumatically controlled expansion bag 7 is an airtight cloth bag, while the protective component 9 of the internal inflation device 8 is a breathable mesh cloth bag. The pneumatically controlled expansion bag 7 is made of soft, comfortable, and highly elastic leather material. After inflation, the pneumatically controlled expansion bag 7 becomes cylindrical, with an air inlet at the opening 14 on the leather cover 13 on its upper bottom surface. When the pneumatically controlled expansion bag 7 is inflated, the air inlet at the opening 14 on the leather cover 13 can be opened to allow air to enter. Once the pneumatically controlled expansion bag 7 reaches the specified full state, the air inlet is closed. In one implementation, the air inlet can be opened and closed using a rotary valve.

[0031] The protective component 9 contains a foam fixing component 11 that secures the inflation device 8. After the inflation device 8 starts operating and dispensing air, the airflow passes through the protective component 9 of the small mesh bag, inflating the pneumatically controlled expanding bag 7 into a cylinder. To smoothly catch the fleece fabric after it comes off the machine, the leather cover 13 on top of the cylindrical pneumatically controlled expanding bag 7 is shaped like a semi-truncated cone. When expanding the fabric, the pneumatically controlled expanding bag 7 is held in the middle by the pull roller 12, forming a funnel shape. At the same time, to prevent the inflation device 8 from colliding with the pull roller 12 below the pneumatically controlled expanding bag 7, the inflation device 8 is fixed in the annular groove fixing component 10 inside the pneumatically controlled expanding bag 7. The diameter of the annular groove fixing component 10 can be set to be the same as the diameter of the pneumatically controlled expanding bag 7 and fixed to the inner wall of the pneumatically controlled expanding bag 7. The specific position is determined based on the principle that the inflation device 8 does not collide with the pull roller 12.

[0032] The working principle of this utility model:

[0033] When the pneumatically controlled fabric spreading bag is clamped in the pull roller, its original shape changes, and the bottom of the pneumatically controlled fabric spreading bag is clamped into a funnel shape. However, the pneumatically controlled fabric spreading bag is airtight, which keeps the overall internal gas volume constant and ensures that the internal air pressure of the pneumatically controlled fabric spreading bag is uniform. The funnel shape is the key to ensuring uniform tension of the fabric spreading in the pneumatically controlled fabric spreading bag, which allows the fabric to be pulled from the cylindrical spreading shape into a flat fabric shape for winding and collection after it comes off the machine.

[0034] When the pneumatically controlled spreading bag begins to receive the fur fabric and applies spreading tension and gripping force, the consistent internal pressure of the bag ensures uniform tension on the fabric during the spreading process. Simultaneously, the pneumatically controlled spreading bag is made of a very soft, comfortable, and elastic leather material, providing gentle, comfortable, uniform, and damage-free spreading of the artificial fur fabric during the spreading process, reducing damage to the fabric surface caused by excessive tension or gripping force. When the pneumatically controlled spreading bag receives the fur fabric, it is held and evenly collected by the tension rollers along the spreading device, eliminating the need for manual clamping of the fabric in the rollers. The pneumatically controlled spreading bag can be continuously inflated via an inflation device, ensuring that the internal air pressure remains constant according to the set value, allowing for quick and flexible control of the spreading tension and ensuring uniformity. The air pressure setting of the inflation device is set according to the actual production conditions of the fur fabric to ensure effective gripping and expansion of the fur fabric.

[0035] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A pneumatic control spreading device for artificial fur machines, characterized in that, The pneumatic control spreading device comprises a pneumatic control spreading bag, a fixing component and an air inlet component; the pneumatic control spreading bag is a cylindrical air-tight cloth bag after being inflated, is arranged in a needle cylinder of the artificial fur machine and is located above a pulling roller of the artificial fur machine; the fixing component comprises a fixing connecting rod and is used for fixing the pneumatic control spreading bag; and the air inlet component comprises an air valve and an air pipe and is used for inflating and deflating the pneumatic control spreading bag.

2. A pneumatic controlled spreading device for artificial fur machines according to claim 1, characterized in that, The diameter of the pneumatic control spreading bag is greater than the cylinder diameter of the artificial fur machine.

3. A pneumatic control spreading device for artificial fur machines according to claim 2, characterized in that, The upper bottom surface of the pneumatic control spreading bag is made of hard leather, and the lower bottom surface and the side surface are made of soft leather.

4. A pneumatic control spreading device for artificial fur machine according to claim 3, characterized in that, The fixing connecting rod is provided with one, two or more fixing connecting rods, is fixedly connected with the upper bottom surface made of hard leather and is used for fixing the pneumatic control spreading bag, and the other end of the fixing connecting rod is fixed to a suspending beam above the artificial fur machine.

5. A pneumatic control spreading device for artificial fur machines according to claim 4, characterized in that, The air valve is arranged on the pneumatic control spreading bag, and the air pipe is communicated with the pneumatic control spreading bag through the air valve.

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