Circular weaving machine without lifting device

Abstract

The utility model discloses a circular weaving machine without a lifting device, belongs to the field of weaving machinery, and solves the problems that needling cloth and woven bags are abraded due to different speeds, work is delayed due to shutdown adjustment or replacement, single-side defects occur due to improper adjustment, operation is inconvenient due to the too high height of a main machine, and plant investment is increased. According to the technical scheme, the device mainly comprises a main machine and a traction device, the main machine is provided with a top guide roller, the traction device comprises a base and a stand column, the base is provided with a motor, a reduction gear set, a first winding roller, a second winding roller and a cloth winding pipe on the first winding roller, and the base is provided with a first guide roller and a flattening rod. The first winding roller and the second winding roller rotate in the same direction, and the linear speed is equal to the knitting speed. According to the utility model, the wind-up roller is always in a pure rolling state, the abrasion of the needling cloth and the woven bag caused by slipping is avoided, the gear transmission does not need to be adjusted or replaced by stopping, the work delay or the single-side defect of winding is avoided, and the special requirement of the circular weaving machine on the plant height is reduced, so that the plant investment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of weaving machinery, and in particular to a circular loom without a lifting device. Background Technology

[0002] It is well known that the lifting (i.e., traction) and winding of plastic circular looms are two independent devices, driven by two separate motors. This results in a complex structure, redundant functions, and difficulty in matching the speeds of the two motors. The winding speed is generally much greater than the traction speed. Furthermore, to ensure a tight roll, the two winding rollers operate at different speeds, causing the rollers to frequently slip. This leads to wear on the quilted fabric on the winding rollers, requiring frequent machine stops for re-wrapping, and, more importantly, damage to the woven bags. Secondly, the winding device uses chain and sprocket drives, which have a short lifespan. Wear and tear on the chain and sprockets cause the chain to loosen, necessitating frequent machine stops for adjustment and replacement. This not only causes work delays but also leads to "one-sided" defects in the rolled fabric due to improper adjustment. In addition, the existing lifting device is located at the top of the main machine. During the conversion from tubular to flat woven bags, the installation height of the lifting device generally requires certain specifications. The installation height of the lifting device on existing four-shuttle circular looms is at least 2 meters from the weave opening, and for large circular looms, it needs to exceed 3-4 meters. Such heights are obviously inconvenient for installation and also impose special requirements on the factory's ceiling height, undoubtedly increasing factory investment. Utility Model Content

[0003] The purpose of this invention is to provide a circular loom without a lifting device, which solves the problems of slippage caused by uneven speeds of the two take-up rollers, resulting in wear of the quilted fabric, downtime for adjustment or replacement, and even one-sided defects due to improper adjustment. It also addresses the increased factory investment due to special height requirements. The invention reduces wear of the quilted fabric caused by take-up roller slippage, avoids downtime for adjustment or replacement due to gear transmission, thus preventing downtime or one-sided defects during take-up, and reduces the special height requirements of the circular loom, thereby reducing factory investment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a circular loom without a lifting device, comprising a main machine and a take-up device. The top of the main machine is provided with a top guide roller for guiding out woven bags. The take-up device includes a base, and the base is provided with a fabric winding tube for winding the woven bags. The base is provided with a motor, a first take-up roller, and a second take-up roller. The first and second take-up rollers are movable rollers and are steel rollers. The outer walls of the first and second take-up rollers abut against the fabric winding tube to drive the fabric winding tube to rotate and wind up the woven bags. The base is provided with a first guide roller and a flattening rod. The first guide roller is a movable roller, and the woven bags pass under the first guide roller while the first guide roller rotates to transport the woven bags. The flattening rod is a fixed rod, and the lower edge of the flattening rod is lower than the lower edge of the first guide roller to contact the woven bags and flatten them. The base is provided with a reduction gear set, which is located between the motor and the first and second take-up rollers to make the first and second take-up rollers rotate at the same speed and the same as the weaving speed of the main machine.

[0005] After adopting the above technical solution, this utility model has the following advantages: The woven bag, after being woven by the main machine, wraps around the top guide roller at the top of the main machine, then passes under the first guide roller and the flattening rod in sequence, contacting the lower side of the first guide roller and the flattening rod. The rotation of the first guide roller, a movable roller, transports the woven bag, preventing it from accumulating between the first guide roller and the top guide roller. The woven bag, after being transported by the first guide roller, is flattened by the flattening rod and then transported to the first take-up roller. While flattening the woven bag, the flattening rod provides friction and traction, ensuring stable transport of the woven bag. The woven bag is then transported from the first take-up roller... After the bottom of the take-up roller is wound around to the side opposite to the flattening rod of the first take-up roller, it is wound up through the fabric winding tube. When the woven bag comes into contact with the first take-up roller, the first take-up roller, being a steel roller, avoids wear due to friction between the woven bag and the first take-up roller, thus preventing wear on the quilted fabric. When the motor drives the first and second take-up rollers to rotate, it is driven by a reduction gear set, avoiding the need for machine stoppage or replacement due to chain slack, which would cause work delays when using sprocket and chain drives; it also avoids one-sided defects caused by improper chain adjustment during fabric winding, thereby improving the fabric winding effect of the woven bag on the fabric winding tube. The circular loom, by not having a lifting device, avoids the special height requirements of the factory, thus reducing the investment in the factory; the height of the main frame is lowered, making it easier for the operator to operate and improving the operator's work efficiency.

[0006] Furthermore, the base is provided with a flattening roller and a second guide roller. The second guide roller is a movable roller, and the flattening roller is a fixed roller. The woven bag is wound from below the flattening roller to above the second guide roller and then to the first guide roller. The flattening roller flattens the woven bag and forms a wrap angle with the second guide roller to provide tension. Alternatively, the base is provided with a second guide roller and a flattening roller. The flattening roller is higher than the flattening rod. The woven bag is conveyed sequentially from below the first guide roller, above the flattening rod, and below the flattening roller. A traction pair for traction of the woven bag is formed between the flattening rod and the flattening roller.

[0007] Using the aforementioned technical solution, after the woven bag is conveyed from the top guide roller, it wraps around from below the flattening roller to above the second guide roller, and then around to the first guide roller below. This increases the wrap angle between the woven bag and the flattening roller and the second guide roller. The flattening roller and the second guide roller create tension on the woven bag, thereby creating traction. This allows the woven bag at the fixed guide roller to be continuously conveyed to the first guide roller. During the conveying process, the second guide roller is a movable roller, providing power for the conveying of the woven bag and preventing the woven bag from accumulating between the top guide roller and the second guide roller due to untimely conveying. When the woven bag passes through the flattening roller, it is initially flattened under the action of the flattening roller, which facilitates the subsequent flattening rod to improve the flattening effect of the woven bag. This improves the flatness of the woven bag before winding and the uniformity of the thickness of the woven bag on the roll tube after winding. After the woven bags are conveyed between the second guide rollers, they are then sequentially conveyed towards the fabric winding tube from below the first guide roller and the flattening rod. The conveying by the first and second guide rollers, and the flattening by the flattening roller and flattening rod, improve the uniformity of the woven bag conveying speed and the flatness of the woven bags during the conveying process. Alternatively, the flattening roller can be placed on the base, so that the fabric is pulled by the flattening rod, and then flattened and pulled by the flattening roller, improving the traction stability of the fabric and ensuring stable traction, conveying, and winding of the fabric after it is output from the main machine; it also improves the circumferential uniformity of the fabric tension after winding.

[0008] Furthermore, the base is equipped with a pressure roller and an elastic tensioning assembly. The pressure roller is a movable roller, and the elastic tensioning assembly drives the pressure roller to abut against the first winding roller to form a traction pair, providing traction force for the woven bag.

[0009] Using the aforementioned technical solution, after the woven bag passes under the flattening rod, it passes over the pressure roller and is conveyed downward between the pressure roller and the first take-up roller, then passes under the first take-up roller. Under the action of the elastic tensioning component and the pressure roller, the woven bag between the pressure roller and the first take-up roller abuts against the outer wall of the first take-up roller, so that the first take-up roller drives the woven bag to be conveyed above the first take-up roller. Through the abutment of the pressure roller, the woven bag is prevented from slipping off the first take-up roller, thereby improving the stability of the woven bag conveyed by the first take-up roller, so that the woven bag can be well wound up on the roll tube.

[0010] Furthermore, the reduction gear set includes a first output gear, a second output gear, and an intermediate wheel that meshes with both the first and second output gears. The first and second output gears are coaxially fixed with the first and second take-up rollers, respectively, and the first output gear is connected to the motor for transmission.

[0011] By adopting the aforementioned technical solution, the first and second take-up rollers are driven to rotate by the first and second output gears, and the first and second output gears are driven by the meshing of the intermediate gear, which improves the stability of the rotation of the first and second take-up rollers driven by the motor, reduces the possibility of work stoppage and adjustment, and reduces the occurrence of one-sided fabric winding caused by improper adjustment after work stoppage; by driving the first and second take-up rollers to rotate simultaneously by one motor, the cost of the circular loom is reduced while ensuring the fabric winding effect.

[0012] Furthermore, the base is equipped with a cylinder, and a counterweight shaft is inserted into the fabric roll tube. The output end of the cylinder is connected to the counterweight shaft, and the vertical air pressure of the cylinder presses the fabric roll tube against the first take-up roller and the second take-up roller through the counterweight shaft.

[0013] Using the aforementioned technical solution, the counterweight is driven by the cylinder to abut against the fabric roll tube axially downwards. The pneumatic counterweight greatly increases the traction force, so that the fabric roll tube, the first take-up roller, and the second take-up roller directly form a traction and take-up pair. This allows the fabric roll tube to press against the first take-up roller and the second take-up roller more stably, pulling out the woven bag and winding it into a roll of fabric. The roll of fabric is also tighter, and the entire traction and take-up process is always in a pure rolling state.

[0014] Furthermore, the counterweight shaft includes a spindle, a bearing, a positioning sleeve, and a steel pipe. The steel pipe is sleeved on the spindle, the spindle is connected to the output end of the cylinder, and the bearing is located between the steel pipe and the spindle so that the steel pipe can rotate relative to the spindle. The fabric rolling tube is sleeved on the steel pipe, and the positioning sleeve is located on the outer peripheral wall of the steel pipe and connected by screws. The positioning sleeve abuts against the end face of the fabric rolling tube.

[0015] Using the aforementioned technical solution, the cylinder abuts against the end of the mandrel, and the mandrel abuts against the steel pipe so that the steel pipe abuts against the inner wall of the fabric rolling tube. The mandrel and the steel pipe are rotatably connected by a bearing. When the fabric rolling tube rolls to roll the fabric, the steel pipe rolls freely with the fabric rolling tube. The bearing can ensure that the position of the mandrel axis remains unchanged, thus facilitating the replacement of the fabric roll.

[0016] Furthermore, the output end of the cylinder includes a piston rod, and the end of the piston rod is provided with a V-shaped pressure plate, which abuts against the spindle.

[0017] By adopting the aforementioned technical solution, when the cylinder abuts against the mandrel downwards, it abuts against the mandrel through a V-shaped pressure plate, thereby increasing the contact area between the cylinder and the mandrel, improving the stability of the cylinder abutting against the mandrel, and thus improving the stability of the fabric winding tube.

[0018] Furthermore, the outer diameter d of the steel pipe is smaller than the inner diameter D of the fabric roll tube, and the thickness h of the positioning sleeve is smaller than the thickness H of the fabric roll tube.

[0019] By adopting the aforementioned technical solution, the outer diameter of the steel pipe is set to be smaller than the inner diameter of the fabric winding tube, so that there is a certain space between the outer wall of the steel pipe and the inner wall of the fabric winding tube; the counterweight shaft is loosely fitted inside the fabric winding tube, making loading and unloading more convenient; the counterweight shaft performs planetary motion inside the fabric winding tube at a very low speed, making the fabric winding tighter; it also makes it easier to remove the wound fabric winding tube from the steel pipe after the fabric winding is completed; and the thickness of the positioning sleeve is set to be smaller than the thickness of the fabric winding tube to avoid the positioning sleeve protruding from the outer peripheral wall of the steel pipe and causing interference problems caused by the positioning sleeve abutting against the first and second winding rollers.

[0020] Furthermore, the cylinder is provided in two parts, with the two cylinders respectively abutting against the two ends of the spindle, and the piston rod of the cylinder is provided with a dust cover; or / and, the control circuit of the cylinder is provided with a pneumatic pull valve.

[0021] By adopting the aforementioned technical solution, two cylinders are respectively abutted against the two ends of the mandrel, so that both ends of the fabric winding tube can abut well against the first and second take-up rollers, avoiding instability at one end of the fabric winding tube and affecting the fabric winding effect of the fabric winding tube, thus improving the fabric winding effect of the fabric winding tube.

[0022] Furthermore, the first take-up roller and the second take-up roller have the same outer diameter, and the first output gear and the second output gear are identical.

[0023] By adopting the aforementioned technical solution, the first output gear and the second output gear are set to be the same, so that the first winding roller and the second winding roller rotate at the same speed, thereby avoiding slippage of the fabric tube and affecting the winding of the woven bag. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of a circular loom without a lifting device according to the present invention;

[0026] Figure 2 This is a schematic diagram of the traction and retraction device in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the flattening roller in this utility model, which is located on the base.

[0028] Figure 4 This is a schematic diagram of the reduction gear set in this utility model;

[0029] Figure 5 This is a schematic diagram of the installation of the pressure roller and the elastic tensioning assembly in this utility model;

[0030] Figure 6 This is a schematic diagram of the installation of the counterweight shaft in this utility model;

[0031] Figure 7 This is a schematic diagram showing the state of the cylinder abutting the mandrel in this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0033] The terms "first," "second," etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or sequence. Even if "second" is used before a technical feature for distinction, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, and Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Containing X, Y, and Z," "Containing X, Y, and Z" means that all three X, Y, and Z are included; "Containing X, Y, or Z" means that one of X, Y, and Z is included; "Containing X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are included.

[0034] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0035] like Figure 1 As shown, this utility model provides a circular loom without a lifting device, including a main machine 1 and a take-up device 2. The top of the main machine 1 is equipped with a top guide roller 11 for guiding the woven bag. After the main machine 1 completes weaving, the woven bag is guided out from the top guide roller 11, avoiding the need for a lifting device above the main machine 1, which would otherwise require special height restrictions on the factory building. This reduces factory investment, lowers the height of the main machine 1 frame, ensures convenient access for operators, and improves operator efficiency. Figure 1 and Figure 2As shown, the traction device 2 includes a base 21 and a column 22 disposed on the base 21. The column 22 is provided with a fabric winding tube 221 for winding the woven bag. The base 21 is provided with a motor 211, a first winding roller 212 and a second winding roller 213. The first winding roller 212 and the second winding roller 213 are movable rollers and are rotatably connected to the base 21. The fabric winding tube 221 abuts against the outer walls of the first winding roller 212 and the second winding roller 213, so that when the first winding roller 212 and the second winding roller 213 rotate, they drive the fabric winding tube 221 to rotate to wind the woven bag. The first take-up roller 212 and the second take-up roller 213 are steel rollers, which reduces the possibility of wear on the woven bag due to greater friction when the woven bag comes into contact with the first take-up roller 212 and the second take-up roller 213. The outer walls of the first take-up roller 212 and the second take-up roller 213 are in contact with the fabric rolling tube 221 to drive the fabric rolling tube 221 to rotate and roll up the woven bag, thereby improving the woven bag winding effect.

[0036] To facilitate the transport and winding of woven bags, such as Figure 2 As shown, the base 21 is equipped with a first guide roller 214 and a flattening rod 215. When the woven bag is conveyed to the base 21, it is conveyed from the lower side of the first guide roller 214 and the flattening rod 215 to the first take-up roller 212, and the woven bag is in contact with the lower sidewalls of the first guide roller 214 and the flattening rod 215. Specifically, the first guide roller 214 is a movable roller, and the motor 211 is connected to the first guide roller 214 for transmission. The first guide roller 214 drives the woven bag to be conveyed to the first take-up roller 212 and the second take-up roller 213 so that the fabric winding tube 221 can wind up the woven bag. The flattening rod 215 is a fixed rod. The lower edge of the flattening rod 215 abuts against the woven bag downwards. The lower edge of the flattening rod 215 is lower than the lower edge of the first guide roller 214, ensuring that the woven bag is in direct contact with the flattening rod 215. This allows the woven bag to unfold during the conveying process, reducing the situation of double or multiple layers of stacking of the woven bag in the vertical direction, thereby improving the winding effect of the woven bag. While the flattening rod 215 flattens the woven bag, the damping of the flattening rod 215 provides traction force for the conveying of the woven bag, ensuring that the woven bag can be conveyed to the roll tube 221 for winding.

[0037] In another embodiment, such as Figure 3As shown, the flattening roller 222 is mounted on the base 21 and is located between the flattening rod 215 and the first take-up roller 212. The flattening roller 222 is higher than the flattening rod 215. After the woven bag is conveyed downward from the second guide roller 223 to the first guide roller 214, it passes under the first guide roller 214, above the flattening rod 215, and below the flattening roller 222 in sequence before being conveyed to the first take-up roller 212. The woven bag contacts the first guide roller 214, the flattening rod 215, and the flattening roller 222 and forms a wrapping angle. The flattening rod 215 and the flattening roller 222 form a traction pair for traction of the woven bag, improving the stability of the woven bag conveying and thus improving the uniformity of the circumferential tension of the woven bag after it is wound on the roll tube 221. The frictional resistance of the flattening rod 215 and the flattening roller 222 themselves also provides traction for the woven bag, improving the traction effect.

[0038] like Figure 2 and Figure 4 As shown, the base 21 is equipped with a reduction gear set 3, which is located between the motor 211 and the first take-up roller 212 and the second take-up roller 213. This drives the first take-up roller 212 and the second take-up roller 213 to rotate at the same speed, and the rotation speed is the same as the weaving speed of the main machine 1. Here, "same speed" means that the linear speed of the first take-up roller 212 is the same as the speed at which the main machine 1 conveys the woven bag upwards. This reduces the risk of the woven bag accumulating between the top guide roller 11 and the first take-up roller 212 due to excessively fast fabric output, or the woven bag becoming overstretched between the top guide roller 11 and the fabric winding tube 221 due to slow fabric output, resulting in inconsistent tension in different parts of the woven bag and damage. In this embodiment, the same speed for the first take-up roller 212, the second take-up roller 213, and the fabric winding tube 221 refers to the same linear speed.

[0039] To ensure that the first take-up roller 212 and the second take-up roller 213 rotate at the same speed, and to prevent the fabric winding tube 221 from slipping, thereby avoiding one-sided winding of the fabric, such as... Figure 2 and Figure 4 As shown, the reduction gear set 3 includes a first output gear 31, a second output gear 32, and an intermediate wheel 33 that meshes with both the first output gear 31 and the second output gear 32. The first output gear 31 is coaxially fixed with the first take-up roller 212, and the second output gear 32 is coaxially fixed with the second take-up roller 213. The motor 211 is connected to the first output gear 31 for transmission. The first output gear 31 and the second output gear 32 are the same. The outer diameters of the first take-up roller 212 and the second take-up roller 213 are equal. After the motor 211 drives the first output gear 31 to rotate, it drives the second output gear 32 to rotate through the intermediate wheel 33. The first take-up roller 212 and the second take-up roller 213 have the same speed and the same direction, which avoids the fabric winding tube 221 from slipping and affecting the fabric winding of the fabric winding tube 221, thereby avoiding the phenomenon of one side when the woven bag is wound.

[0040] To increase the tension between woven bags and improve the roll-up effect of the woven bags, such as... Figure 2 As shown, the column 22 is equipped with a second guide roller 223 and a flattening roller 222. After the woven bag is discharged from the top guide roller 11, it is conveyed from below the flattening roller 222 to above the second guide roller 223. The second guide roller 223 is a movable roller and is rotatably connected to the column 22. When the second guide roller 223 rotates, it drives the woven bag to be conveyed to the first guide roller 214 at the second guide roller 223. The flattening roller 222 is a fixed roller. The woven bag contacts the flattening roller 222 to initially flatten the woven bag. The flattening roller 222 provides traction force to the woven bag through its own frictional resistance, ensuring that the woven bag can be stably conveyed to the roll tube 221. Specifically, the woven bag is wound from below the flattening roller 222 to the second guide roller 223 and then to below the first guide roller 214, so that there is a large wrap angle between the woven bag and the second guide roller 223, which provides tension for the conveying of the woven bag and prevents the woven bag from not being able to be tightly wound on the roll tube 221 due to insufficient tension during the conveying process. The woven bag, which is initially flattened by the flattening roller 222, is then flattened a second time by the flattening rod 215, which improves the flatness of the woven bag wound on the roll tube 221 and thus improves the roll effect.

[0041] To further improve the tension of woven bags during the conveying process, such as Figure 2 and Figure 5 As shown, the base 21 is equipped with a pressure roller 216 and an elastic tensioning assembly 217. The pressure roller 216 is a movable roller. The elastic tensioning assembly 217 drives the pressure roller 216 to move closer to or away from the first take-up roller 212. When the elastic tensioning assembly 217 drives the pressure roller 216 to abut against the outer peripheral wall of the first take-up roller 212, a traction pair is formed between the pressure roller 216 and the first take-up roller 212, which helps to pull out the woven bag. After the woven bag is flattened under the flattening rod 215, it passes over the pressure roller 216 and passes between the pressure roller 216 and the first take-up roller 212. The woven bag is conveyed downwards between rollers 12 and 212. It is conveyed upwards from the side of the first take-up roller 212 away from the pressure roller 216 and contacts the fabric roll tube 221. As the fabric roll tube 221 rotates, it is wound up. The pressure roller 216 presses the woven bag tightly against the first take-up roller 212, so that the woven bag is conveyed with the rotation of the first take-up roller 212. At the same time, it increases the tension of the woven bag and prevents the woven bag from slipping off the first take-up roller 212, which would affect the winding of the woven bag on the fabric roll tube 221. It also has an anti-backward function, which makes it convenient to stop the machine and replace the fabric roll tube 221.

[0042] In another embodiment, to improve the contact effect between the fabric roll tube 221 and the first take-up roller 212 and the second take-up roller 213, such as... Figure 2As shown, the column 22 is equipped with a cylinder 4, and a counterweight shaft 5 is inserted into the fabric rolling tube 221. The output end of the cylinder 4 is connected to the counterweight shaft 5, so that the air pressure of the cylinder 4 passes vertically through the counterweight shaft 5 to press the fabric rolling tube 221 against the first winding roller 212 and the second winding roller 213. When the first winding roller 212 and the second winding roller 213 rotate, they drive the fabric rolling tube 221 to rotate to complete the winding of the woven bag.

[0043] Specifically, such as Figure 6 As shown, the counterweight shaft 5 includes a spindle 51, a bearing 52, a positioning sleeve 53, and a steel pipe 54. The steel pipe 54 is sleeved on the spindle 51, and the spindle 51 is connected to the output end of the cylinder 4. The bearing 52 is located between the spindle 51 and the steel pipe 54, allowing relative rotation between the spindle 51 and the steel pipe 54. The fabric winding tube 221 is sleeved on the steel pipe 54. After the fabric winding tube 221 is sleeved, the air pressure of the cylinder 4 presses vertically downward against the spindle 51, causing the lower side of the steel pipe 54 to press against the inner wall of the fabric winding tube 221. The fabric roll tube 221 presses against the first take-up roller 212 and the second take-up roller 213, thereby increasing the contact force between the fabric roll tube 221 and the first take-up roller 212 and the second take-up roller 213, and improving the stability of the fabric roll tube 221. The positioning sleeve 53 is provided on the outer peripheral wall of the steel pipe 54 and is connected by screws. After the positioning sleeve 53 is installed, the positioning sleeve 53 abuts against the end face of the fabric roll tube 221, preventing the fabric roll tube 221 from sliding along the axial direction of the steel pipe 54 on the outer wall of the steel pipe 54 and affecting the winding of the woven bag.

[0044] To facilitate the connection and removal of the fabric roll tube 221, such as Figure 6 As shown, the outer diameter of the steel pipe 54 is d, and the inner diameter of the fabric rolling tube 221 is D, where D > d. This creates a certain gap between the inner wall of the fabric rolling tube 221 and the outer wall of the steel pipe 54, facilitating the disassembly of the fabric rolling tube 221 after it has been rolled or the insertion of a new fabric rolling tube 221. When the cylinder moves downward against the mandrel 51, the steel pipe 54 undergoes planetary motion within the fabric rolling tube 221, resulting in a slower speed for the fabric rolling tube 221. This facilitates the winding of the woven bag and makes the roll of fabric tighter.

[0045] To prevent the positioning sleeve 53 from abutting against the first take-up roller 212 and the second take-up roller 213 and affecting the winding of the fabric tube 221, such as Figure 6 As shown, the thickness of the positioning sleeve 53 in the radial direction of the steel pipe 54 is h, and the thickness of the fabric winding tube 221 before the fabric is wound is H, where H > h. When the cylinder 4 drives the spindle 51 and the steel pipe 54 to abut against the fabric winding tube 221 so that the fabric winding tube 221 abuts against the first take-up roller 212 and the second take-up roller 213, the positioning sleeve 53 does not protrude from the outer peripheral wall of the fabric winding tube 221. This avoids interference between the outer wall of the positioning sleeve 53 and the outer walls of the first take-up roller 212 and the second take-up roller 213, which would affect the rotation of the fabric winding tube 221 and thus prevent the fabric winding of the fabric winding tube 221 from being affected.

[0046] To improve the stability of the contact between the cylinder 4 and the spindle 51, so that the fabric tube 221 contacts the first take-up roller 212 and the second take-up roller 213, as follows: Figure 7 As shown, there are two cylinders 4, which abut against the two ends of the spindle 51 respectively, so that both ends of the fabric roll tube 221 abut against the first take-up roller 212 and the second take-up roller 213, thereby improving the synchronicity of the rotation of the two ends of the fabric roll tube 221, improving the stability of the contact between the fabric roll tube 221 and the first take-up roller 212 and the second take-up roller 213, and thus improving the stability of the woven bag winding. Figure 7 As shown, the piston rod of cylinder 4 is equipped with a dust cover 42, which is usually made of corrugated pipe and can retract with the extension and retraction of the piston rod, so that the dust cover 42 can cover the piston rod of cylinder 4 relatively completely during the extension and retraction of the piston rod. The dust cover 42 can also be made of other materials that can retract with the extension and retraction of the piston rod of cylinder 4. Cylinder 4 is also equipped with a pneumatic pull valve 41. When it is necessary to disassemble the rolled fabric tube 221, the pneumatic pull valve 41 is pulled to accelerate the retraction speed of the piston rod of cylinder 4, thereby improving the efficiency of removing the rolled fabric tube 221.

[0047] In another embodiment, to improve the stability of the cylinder 4 abutting the spindle 51, such as Figure 7 As shown, the output end of the cylinder 4 includes a piston rod, and the end of the piston rod is provided with a V-shaped pressure plate 43. The V-shaped pressure plate 43 abuts against the end of the spindle 51, which improves the stability of the cylinder 4 abutting against the spindle 51 and prevents the piston rod of the cylinder 4 from detaching from the spindle 51 and affecting the stability of the fabric roll tube 221 abutting against the first take-up roller 212 and the second take-up roller 213.

[0048] In another embodiment, the cylinder 4 can also be a single cylinder. The lower end of the piston rod of the cylinder 4 is provided with a crossbeam and two support rods. The crossbeam is connected to the piston rod of the cylinder 4 and the length direction of the crossbeam is parallel to the axial direction of the fabric winding tube 221. The two support rods are provided on both ends of the crossbeam and abut against both ends of the spindle 51, which improves the stability of the fabric winding tube 221 abutting against the first winding roller 212 and the second winding roller 213. A space is reserved between the lower side wall of the crossbeam and the outer peripheral wall of the fabric winding tube 221 for the woven bag to be wound, which reduces the influence of the crossbeam on the fabric winding tube 221.

[0049] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A circular loom without a lifting device, comprising a main machine and a take-up device, wherein the top of the main machine is provided with a top guide roller for guiding out woven bags, the take-up device includes a base, the base is provided with a fabric winding tube for winding the woven bags, the base is provided with a motor, a first take-up roller and a second take-up roller, the first take-up roller and the second take-up roller are movable rollers and are steel rollers, the outer walls of the first take-up roller and the second take-up roller abut against the fabric winding tube to drive the fabric winding tube to rotate and wind up the woven bags, characterized in that, The base is equipped with a first guide roller and a flattening rod. The first guide roller is a movable roller, and the woven bag passes under the first guide roller while the first guide roller rotates to transport the woven bag. The flattening rod is a fixed rod, and the lower edge of the flattening rod is lower than the lower edge of the first guide roller so as to contact the woven bag and flatten the woven bag. The base is equipped with a reduction gear set, which is located between the motor and the first take-up roller and the second take-up roller so that the first take-up roller and the second take-up roller rotate at the same speed and the same as the weaving speed of the main machine. The base is equipped with a cylinder, and a counterweight shaft is inserted into the fabric roll tube. The output end of the cylinder is connected to the counterweight shaft. The vertical air pressure of the cylinder presses the fabric roll tube against the first take-up roller and the second take-up roller through the counterweight shaft.

2. The circular loom without a lifting device according to claim 1, characterized in that, The base is equipped with a flattening roller and a second guide roller. The second guide roller is a movable roller, and the flattening roller is a fixed roller. The woven bag is wound from below the flattening roller to above the second guide roller and then to the first guide roller. The flattening roller flattens the woven bag and forms a wrap angle with the second guide roller to provide tension. Alternatively, the base is equipped with a second guide roller and a flattening roller. The flattening roller is higher than the flattening rod. The woven bag is conveyed sequentially from below the first guide roller, above the flattening rod, and below the flattening roller. A traction pair for pulling the woven bag is formed between the flattening rod and the flattening roller.

3. The circular loom without a lifting device according to claim 1, characterized in that, The base is equipped with a pressure roller and an elastic tensioning assembly. The pressure roller is a movable roller, and the elastic tensioning assembly drives the pressure roller to abut against the first winding roller to form a traction pair, providing traction force for the woven bag.

4. The circular loom without a lifting device according to claim 1, characterized in that, The reduction gear set includes a first output gear, a second output gear, and a median gear that meshes with both the first and second output gears. The first and second output gears are coaxially fixed with the first and second take-up rollers, respectively, and the first output gear is connected to the motor for transmission.

5. The circular loom without a lifting device according to claim 1, characterized in that, The counterweight shaft includes a spindle, a bearing, a positioning sleeve, and a steel pipe. The steel pipe is sleeved on the spindle, the spindle is connected to the output end of the cylinder, and the bearing is located between the steel pipe and the spindle so that the steel pipe can rotate relative to the spindle. The fabric rolling tube is sleeved on the steel pipe, and the positioning sleeve is located on the outer peripheral wall of the steel pipe and connected by screws. The positioning sleeve abuts against the end face of the fabric rolling tube.

6. The circular loom without a lifting device according to claim 5, characterized in that, The output end of the cylinder includes a piston rod, and the end of the piston rod is provided with a V-shaped pressure plate, which abuts against the spindle.

7. The circular loom without a lifting device according to claim 5, characterized in that, The outer diameter d of the steel pipe is smaller than the inner diameter D of the fabric roll tube, and the thickness h of the positioning sleeve is smaller than the thickness H of the fabric roll tube.

8. The circular loom without a lifting device according to claim 1, characterized in that, The cylinder is provided in two parts, with each cylinder abutting against the two ends of the spindle. The piston rod of the cylinder is provided with a dust cover; or / and, the control circuit of the cylinder is provided with a pneumatic hand-operated valve.

9. The circular loom without a lifting device according to claim 4, characterized in that, The first take-up roller and the second take-up roller have the same outer diameter, and the first output gear and the second output gear are the same.

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