An axial ring braiding machine with double spindle discs

Abstract

The present application relates to the field of annular braiding equipment, in particular to an axial annular braiding machine with double spindle discs, which can improve braiding accuracy and reduce yarn abrasion. The technical scheme comprises a rack, a spindle disc with a track, a yarn-carrying spindle arranged in the track, a braiding mechanism for driving the yarn-carrying spindle to move along the track, a mandrel located at the center of the spindle disc, a traction mechanism for driving the mandrel to move, and a controller electrically connected with the braiding mechanism and the traction mechanism. The spindle disc comprises a front spindle disc and a rear spindle disc which are coaxially arranged with a certain axial spacing. The front spindle disc is provided with a front spindle track and a yarn groove in a wave shape. The rear spindle disc is provided with a rear spindle track in a wave shape. A plurality of yarn-carrying spindles are arranged on the front spindle track and the rear spindle track. Since the two spindle tracks are separated from each other, the vibration of the spindles passing through the staggered points of the tracks is reduced, which is beneficial to improve the braiding accuracy and reduce the yarn abrasion.

Description

Technical Field

[0001] This invention relates to the field of circular knitting equipment, and more specifically to an axial circular knitting machine with double spindle discs. Background Technology

[0002] Circular weaving has advantages such as high processing efficiency and good structural shear resistance. At present, it not only holds an important position in the textile field, but is also increasingly widely used in the manufacturing of carbon fiber reinforced structures. It is also involved in the manufacturing of rocket fairings, missile shells, bicycle beams, propeller blades and other products.

[0003] The quality of the braided structure is significantly affected by the precision of the braiding machine. Existing circular braiding machines mainly include radial braiding machines and axial braiding machines. In axial braiding machines, the spindle axis is parallel to the guide direction of the mandrel. Specifically, an axial braiding machine contains two sets of spindles that move periodically along a predetermined trajectory. The two sets of spindles move clockwise and counterclockwise respectively and intersect radially to achieve braiding. The tracks of the two sets of spindles are arranged on the same end face of the spindle disc and intersect at multiple positions. When the spindles pass through the intersection of the tracks, some collision occurs, similar to a train derailment. Therefore, the spindles will vibrate significantly during production, and the resulting noise affects the working environment. More importantly, the spindle vibration affects the state of yarn release and causes sudden changes in yarn tension. This not only reduces the processing precision of the braiding but also exacerbates the wear of the yarn. Especially when braiding carbon fiber, it can easily cause fiber damage and may lead to short circuits, malfunctions, or even dangers due to carbon dust dispersion.

[0004] Therefore, how to innovatively design the spindle track and reduce vibration during spindle movement is a key issue in improving the manufacturing precision of weaving equipment. This case study arose to address these issues. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide an axial circular braiding machine with double spindles, which should improve braiding accuracy and reduce yarn wear.

[0006] The technical solution of this invention is:

[0007] An axial circular knitting machine with a double spindle disc includes a frame, a spindle disc with a track, yarn-carrying spindles arranged in the track, a knitting mechanism for driving the yarn-carrying spindles to move along the track, a mandrel located at the center of the spindle disc, a traction mechanism for driving the mandrel to move, and a controller electrically connecting the knitting mechanism and the traction mechanism; characterized in that:

[0008] The spindle tray includes a front spindle tray and a rear spindle tray that are arranged coaxially with a certain axial spacing; the front spindle tray is provided with a wavy front spindle track and a yarn groove; the rear spindle tray is provided with a wavy rear spindle track; and several yarn-carrying spindles are arranged on both the front spindle track and the rear spindle track.

[0009] The front spindle track and the yarn groove intersect each other and extend along the circumference of the front spindle disc; the width of the yarn groove is smaller than the width of the front spindle track; the rear spindle track extends along the circumference of the rear spindle disc.

[0010] The yarn groove coincides with the projection trajectory of the rear spindle track on the spindle disk axis.

[0011] The front spindle track is formed on the front end face of the front spindle disc; the yarn groove runs through the front and rear end faces of the front spindle disc.

[0012] The rear spindle track is located on the front end face of the rear spindle disc.

[0013] The phase difference between the front spindle track and the yarn groove is π.

[0014] The beneficial effects of this invention are:

[0015] To overcome the problems of reduced weaving accuracy and easy yarn wear caused by severe spindle vibration in existing axial braiding machines, this invention analyzes the spindle tracks in two directions of movement to address the issues mentioned in the background. Therefore, this invention provides an axial circular braiding machine with two spindle discs that can prevent vibration caused by the spindle moving to the track intersection point. It includes two spindle discs, one in front and one behind, each with its own track. The yarn-carrying spindles on each track move unidirectionally in clockwise and counterclockwise directions respectively without interfering with each other. Since the two tracks do not intersect, vibration caused by the yarn-carrying spindles passing through the track intersection point can be avoided, thereby improving weaving accuracy, reducing yarn wear, and reducing noise pollution during the weaving process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the main structure of the rear spindle disk of the present invention.

[0018] Figure 3 This is a schematic diagram of the front spindle structure of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of an axial braiding machine in the prior art.

[0020] Figure 5 This is a three-dimensional structural diagram of the spindle disc of an axial braiding machine in the prior art.

[0021] Reference numerals in the attached diagram: front spindle 1-1, rear spindle 1-2, yarn-carrying spindle 1-3, spindle 1-4, traction mechanism 1-5, controller 1-6, rear spindle track 2-1, yarn groove 3-1, front spindle track 3-2, double track spindle 4-1. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] like Figure 1 As shown, an axial circular braiding machine with a double spindle disc includes a frame, spindle discs, yarn-carrying spindles 1-3, a braiding mechanism, a mandrel 1-4, a traction mechanism 1-5, and a controller 1-6.

[0024] The spindle disc has a ring structure and a track on it. The yarn-carrying spindle is arranged in the track. The weaving mechanism is used to drive the yarn-carrying spindle to move along the track. The mandrel is set at the center of the spindle disc. The traction mechanism is used to drive the mandrel to move. The controller is used to control the weaving mechanism and the traction mechanism, so that the yarn-carrying spindle moves regularly to release the yarn and weaves the yarn into shape on the mandrel.

[0025] The spindle disk is a double spindle disk, comprising a front spindle disk 1-1 and a rear large spindle disk 1-2 of the same size arranged one behind the other. For example... Figure 1 As shown, the front and rear spindles are arranged vertically and distributed at a certain axial distance, with the front spindle positioned in front of the rear spindle. The two spindles are parallel to each other and their central axes are coaxial. Both the front and rear spindles have several yarn-carrying spindles, which move clockwise and counterclockwise respectively to achieve the weaving and winding action.

[0026] like Figure 3 As shown, the front spindle disc has a front spindle track 3-2 and a yarn groove 3-1. The front spindle track is formed on the front end face of the front spindle disc (the side facing the mandrel). The front spindle track is a ring connected end to end and extends in a wavy shape along the circumference of the front spindle disc. Several yarn-carrying spindles are evenly arranged on the front spindle track (only some yarn-carrying spindles are shown in the figure). The yarn groove runs through the front and rear end faces of the front spindle disc. The yarn groove is also a ring connected end to end and extends in a wavy shape along the circumference of the front spindle disc. The width of the yarn groove is smaller than the width of the inner spindle track.

[0027] The front spindle track and the yarn groove intersect to form an "8" shape. The trajectories of the front spindle track and the yarn groove form a conjugate relationship, and the phase difference between the trajectories of the front spindle track and the yarn groove is π.

[0028] like Figure 2 As shown, a rear spindle track 2-1 is formed on the rear spindle disc. The rear spindle track is formed on the front end face of the rear spindle disc (the side facing the front spindle disc). The rear spindle track is a ring-shaped track with its ends connected, extending in a wavy pattern along the circumference of the rear spindle disc. Several yarn-carrying spindles are evenly arranged on the rear spindle track (only some yarn-carrying spindles are shown in the figure). The width of the front spindle track is the same as the width of the rear spindle track. The projection of the yarn groove onto the radial direction of the spindle disc coincides with the projection of the rear spindle track onto the yarn disc. Therefore, when the yarn-carrying spindles on the rear spindle track move, the yarn they release can pass forward along the axial direction through the yarn groove and perform a clockwise (or counterclockwise) circular motion along the yarn groove in sync with the yarn-carrying spindles on the rear spindle track.

[0029] The working principle of this invention is:

[0030] Multiple yarn-carrying spindles are arranged on both the front spindle track of the front spindle disc and the rear spindle track of the rear spindle disc. The yarn-carrying spindles move in a circular motion along the track. All the yarn-carrying spindles on the front spindle track move in the same direction, and all the yarn-carrying spindles on the rear outer spindle track move in the same direction. The yarn-carrying spindles on the front spindle track move in opposite directions to those on the rear spindle track. While moving along the circumference of the spindle disc, the yarn-carrying spindles also perform periodic reciprocating oscillations along the radial direction of the spindle disc. At the same time, the yarn released by the yarn-carrying spindles on the front spindle track winds onto the mandrel, and the yarn released by the yarn-carrying spindles on the rear spindle track winds onto the mandrel after passing through the yarn groove. The multiple strands of yarn from the front and rear spindles interweave to form a braided structure.

[0031] Because the yarn-carrying spindles moving in the two directions are on different tracks, there is no intersecting structure between the tracks, thus avoiding significant vibration of the yarn-carrying spindle at the track intersection. Although the front spindle track intersects with the yarn groove, the width of the yarn groove is significantly smaller than the width of the track because the yarn groove is coordinated with the movement of the yarn. Therefore, the vibration amplitude of the yarn-carrying spindle is significantly reduced when it passes through the intersection of the front spindle track and the yarn groove.

[0032] As can be seen from the above embodiments, the axial circular braiding machine with double spindle discs provided by the present invention avoids interference with spindle movement caused by the interlacing of spindle tracks by placing the spindle tracks on two different spindle discs at the front and rear, which is beneficial to reducing the degree of spindle vibration. Specifically, the yarn-carrying spindle of the rear spindle track completely eliminates vibration, and the vibration of the yarn-carrying spindle of the front spindle track is greatly reduced. Therefore, the present invention improves the weaving accuracy, reduces yarn wear, and reduces processing noise pollution, which is helpful for improving weaving quality and the working environment of workers.

[0033] All components of this invention are existing technologies and can be purchased externally.

[0034] The mechanism of existing axial braiding machines, such as Figure 4 and Figure 5 As shown, the axial braiding machine is equipped with only one double-track spindle disc 4-1. The front end face of the double-track spindle disc has two intersecting tracks with the same width. When the spindle passes through the intersection of the tracks, it will experience obvious jamming and generate severe vibration.

[0035] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An axial ring braiding machine with double spindle discs, comprising a frame, a spindle disc with a track, a yarn-carrying spindle (1-3) arranged in the track, a braiding mechanism driving the yarn-carrying spindle to move along the track, a mandrel (1-4) located in the center of the spindle disc, a traction mechanism (1-5) driving the mandrel to move, a controller (1-6) electrically connecting the braiding mechanism and the traction mechanism; characterized in that: the spindle disc comprises a front spindle disc (1-1) and a rear spindle disc (1-2) arranged coaxially in front of and behind each other with a certain axial spacing; the front spindle disc is provided with a front spindle track (3-2) in a wave shape and a yarn groove (3-1); the rear spindle disc is provided with a rear spindle track (2-1) in a wave shape; a plurality of yarn-carrying spindles are arranged on the front spindle track and the rear spindle track; the front spindle track and the yarn groove are staggered with each other and extend along the circumferential direction of the front spindle disc; the width of the yarn groove is smaller than the width of the front spindle track; the rear spindle track extends along the circumferential direction of the rear spindle disc; the projection trajectories of the yarn groove and the rear spindle track in the axial direction of the spindle disc coincide; the front spindle track is made on the front end face of the front spindle disc; the yarn groove penetrates through the front and rear end faces of the front spindle disc; the rear spindle track is made on the front end face of the rear spindle disc; the phase difference between the front spindle track and the yarn groove is π. ​

Images