Sliding block type braiding machine spindle capable of monitoring yarn tension on line

Abstract

According to the technical scheme, the invention provides a sliding block type braiding machine spindle capable of monitoring yarn tension on line. Comprising a spindle blade assembly, a spindle sliding block arranged below the spindle blade assembly and elastically connected with the spindle blade assembly, a bobbin adapter forming a ratchet mechanism with the spindle sliding block, a spindle seat arranged at the bottom of the spindle sliding block and a fixing block connected with the spindle seat, and the bobbin adapter is elastically connected with the spindle blade assembly; the spindle blade assembly drives the spindle sliding block to move axially, then the bobbin adapter is driven to move axially, the ratchet wheel structure is unlocked, and spinning is achieved. An original sliding block type spindle structure is changed, a fixing block groove structure is designed to install a TOF laser distance measuring sensor, displacement data are obtained by measuring the distance between a sliding block and the sensor through laser and converted into spring stress data, the yarn tension change condition is finally obtained, yarn tension real-time monitoring can be achieved, and then the yarn tension state is obtained. And the forming quality of the prefabricated body knitted by the three-dimensional orbital transfer cross-linking knitting machine can be improved.

Description

Technical Field

[0001] The invention belongs to the field of braiding machinery, and relates to a slider-type spindle for realizing real-time monitoring of yarn tension during the braiding process of a three-dimensional variable-track cross-linking braiding machine. Background Art

[0002] During high-speed weaving, the tension of the weaving yarn may become unstable due to various reasons, resulting in yarn damage. In the field of weaving machinery, when the yarn passes through the yarn guide, yarn guide hook and other equipment, the tension will change due to friction and steering. At the same time, due to the wear and instability of the equipment, such as the guide roller is not level or the bearing is worn, the yarn tension will also fluctuate.

[0003] In a three-dimensional braiding machine, the spindle, also known as the yarn carrier, is an important component of the three-dimensional rotary braiding equipment. It plays the role of storing yarn, supplying yarn and adjusting yarn tension during the braiding process. Appropriate yarn tension is an essential factor for obtaining a high-performance three-dimensional braided body. If the tension is too large, it may increase yarn friction, cause yarn wear or even breakage. If the tension is too small, it may cause loose and uneven fabric structure, and even defects such as broken yarn and skipped yarn. The slider spindle is a spindle with yarn compensation, which uses a spring to provide tension. Before the spindle discharges the yarn, its ratchet is clamped by the regulator. As the distance between the braiding point and the slider increases, the yarn tension increases, and the spring compression increases. When the yarn tension is greater than the spring force, the yarn drives the spindle slider to slide upward along the sliding axis, so that the bobbin adapter moves up, and the ratchet on the bobbin rotates, releasing a section of yarn. Then the slider returns to the initial position to clamp the bobbin adapter again, and the ratchet is fixed again, thereby completing a single spindle release process. However, due to the discontinuous movement caused by the ratchet mechanism, there are unstable factors, and the yarn tension fluctuates greatly during the yarn release process.

[0004] The fluctuation of yarn tension will affect the surface texture and defects of the fabric, thus affecting the appearance quality and overall strength of the fabric. During the weaving process, the distance between each spindle and the weaving point is not constant, so the required yarn length between the spindle and the weaving point, that is, the yarn tension, changes. If the yarn tension fluctuation during the yarn retraction and release process can be collected at the same time when using the slider spindle for tension compensation, it will help to further optimize the three-dimensional weaving process. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the traditional slider type spindle cannot monitor the yarn tension, and to realize the real-time collection of the slider type spindle yarn tension data when the three-dimensional variable track cross-linking braiding machine is working.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is to provide a slider-type braiding machine spindle that can monitor yarn tension online. On the basis of the traditional slider-type spindle, the structure is improved and optimized, including a spindle rod assembly, a spindle slider arranged below the spindle rod assembly and elastically connected thereto, a yarn tube adapter forming a ratchet mechanism with the spindle slider, a spindle seat arranged at the bottom of the spindle slider and a fixed block connected to the spindle seat, the yarn tube adapter is elastically connected to the spindle rod assembly; the spindle rod assembly drives the spindle slider to move axially, and then drives the yarn tube adapter to move axially, unlocking the ratchet structure to achieve spinning.

[0007] According to the present invention, further, the spindle rod assembly includes a sliding shaft, a yarn tube arranged parallel to the sliding shaft, and a yarn tube fixing clamp installed at the upper end of the yarn tube; the sliding shaft is connected to the spindle slider through a single spring, and the yarn tube adapter is connected to the sliding shaft through a double spring. During the tension increase process, the single spring is compressed to drive the spindle slider to move upward. When the tension is large enough, the double springs are compressed again, the sliding shaft moves upward, the yarn tube adapter is rotated, and the yarn is released from the yarn bobbin.

[0008] According to the present invention, further, the spindle seat is provided with a fixed block connecting part, a rotating base connecting part, a spindle rod assembly connecting part and a battery element installation area, the fixed block is connected to the spindle seat by bolts, and the fixed block has an installation area for installing a sensor.

[0009] According to the present invention, further, a small circular hole is provided at the tail of the yarn tube fixing clamp, a small circular hole is provided on the left and right sides of the sliding shaft, a certain pulley is provided on the outside of the spindle slider, and an arc-shaped claw exists on the inside of the spindle slider to form a ratchet mechanism with the yarn tube adapter.

[0010] According to the present invention, further, the bottom of the spindle seat is hollowed out as an embedded tension monitoring hardware system and battery element installation area, and two small holes are arranged up and down at the rear, the upper hole is connected to the fixed block, and the lower hole is used for wiring to connect the battery at the bottom of the spindle seat and the sensor on the fixed block.

[0011] According to the present invention, further, a groove mechanism is designed above the fixing block to place the TOF laser ranging sensor, and a small hole is opened on the side to connect with the spindle seat through bolts.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the slider in the traditional slider-type spindle can move up and down along the sliding shaft under the drag of the yarn, and the spring at the upper end of the slider gives the slider a restoring force, which can drive the sliding shaft to move upward, so that the bobbin adapter below can move, open the bobbin to release the yarn, and when the slider moves downward, the sliding shaft is stuck on the turntable under the action of the upper end spring, and the bobbin stops moving and no longer releases the yarn, thereby realizing the intermittent release process of the bobbin. The present invention changes the original slider-type spindle structure at the connection part between the tail end of the sliding shaft and the bobbin adapter, designs a groove to install a TOF laser ranging sensor, obtains displacement data by measuring the distance from the slider to the sensor through laser, and converts it into spring force data, and finally obtains the change in yarn tension. After the yarn passes through the pulley on the spindle back and forth, the distance between the braiding point and the slider increases, and the increased tension drives the slider to move upward. At this time, the laser sensor data begins to be collected until the single spring of the sliding shaft is tightened, so that the double spring between the bobbin adapter and the sliding shaft is also tightened to start the yarn release process. After the yarn is released, the tension decreases, the single spring and the double spring are reset, and the distance between the slider and the sensor decreases, completing a cycle. Since the spindle seat currently used does not have the conditions for installing the laser distance sensor and its accessories, the traditional spindle seat and fixed block are redesigned and modified. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the present invention;

[0014] Figure 2 It is a rear view of the present invention;

[0015] Figure 3 is a side cross-sectional view of the present invention;

[0016] Figure 4 It is a schematic diagram of the structure of the fixing block and the sensor in the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the spindle base and embedded tension monitoring hardware system in the present invention.

[0018] Figure 6 This is a schematic diagram of the first viewing angle structure of the sensor of the present invention;

[0019] Figure 7 It is a schematic diagram of the second viewing angle structure of the sensor of the present invention;

[0020] Figure 8 Schematic diagram of the embedded tension monitoring hardware system.

[0021] Fig. 9 It is an embedded track-changing spindle base.

[0022] In the figure, 1- bobbin fixing clamp, 2- sliding shaft, 3- double spring, 4- spindle slider, 5- bobbin adapter, 6- spindle seat, 7- bobbin, 8- fixed pulley, 9- fixed block, 10- sensor, 11- embedded tension monitoring hardware system. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0024] The present invention discloses a slider-type braiding machine spindle capable of online monitoring of yarn tension, comprising: a spindle rod assembly, a spindle slider 4 arranged below the spindle rod assembly and elastically connected thereto, and a spindle seat 6 arranged at the bottom of the spindle slider 4.

[0025] like Figure 1 and Figure 2 As shown, the spindle rod assembly includes a sliding shaft 2, the upper end of the sliding shaft 2 is connected to the yarn tube fixing clamp 1 through a rotatable horizontal shaft, and yarn guide holes are designed on the left and right sides and the upper end of the sliding shaft 2. The yarn in each spindle passes through the yarn guide holes on both sides of the sliding shaft 2 and then passes through the fixed pulley of the spindle slider 4, and finally converges into a braided body from bottom to top through the yarn guide holes at the upper end of the sliding shaft. The bobbin fixing clamp 1 is buckled above the bobbin 7 which is arranged parallel to the sliding shaft 2. A bobbin adapter 5 is installed at the bottom of the bobbin 7. The bobbin adapter 5 is respectively connected to the inner ring shaft and the outer ring shaft of the sliding shaft 2 through the double springs 3. The bobbin adapter 5 and the bobbin 7 form a ratchet mechanism. A single spring is arranged at the upper end of the spindle slider 4. One end of the single spring is connected to the sliding shaft 2. When the sliding shaft 2 slides upward to drive the single spring to contract, and then drives the double springs between the bobbin adapter 5 and the sliding shaft 2 to contract, the bobbin adapter 5 moves upward, the ratchet mechanism is opened, and the bobbin 7 is able to release yarn for a period of time. After the spring returns to the non-compressed state, the bobbin adapter 5 returns to the initial position, the bobbin 7 stops releasing yarn, and the spindle completes a yarn release cycle.

[0026] like Figure 1 and Figure 2 As shown, the claw part of the spindle slider 4 adopts an embracing structure. When not working, the spindle slider 4 is at the lowest end of the sliding shaft 2 due to the force of a single spring between the top and the sliding shaft 2, and moves up to the designated working position after weaving begins.

[0027] like Figure 1 , Figure 3 and Fig. 9As shown, the bottom of the bobbin 7 is connected to the spindle seat 6 by bolts. The front end of the spindle seat 6 is designed with 4 threaded through holes for connection with the base. On the spindle seat at the bottom of the spindle, the dial is embedded in its groove. Two guide blocks are installed in the through hole below the spindle seat. The guide blocks slide on the track composed of the braiding chassis and the insert blocks. The spindle obtains driving force through the dial, obtains an "8"-shaped sliding path through the guide blocks and the track, and realizes braiding. Figure 5 As shown, the middle part of the spindle seat 6 is designed with a hollow structure, which serves as the installation area for the embedded tension monitoring hardware system 11 and battery accessories. The cross-shaped beam below prevents the risk of falling. Two small holes are designed at the rear end of the spindle seat 6 and arranged up and down. The internal wiring between the laser ranging sensor and the battery passes through the upper hole, and the lower hole is connected to the fixing block by bolts.

[0028] like Figure 4 As shown, in order to achieve the installation of the sensor, a fixing block 9 is fixedly connected to one side of the spindle base 6 by bolts, and slots are designed at the left and right ends to fix their relative position with the spindle base 6. The upper end of the fixing block 9 is also designed with a groove structure for placing the sensor 10. The connecting line is connected to the embedded tension monitoring hardware system 11 and the battery at the bottom of the spindle base 6 through the wire hole, wherein the sensor 10 is a TOF laser ranging sensor.

[0029] During the process of releasing the yarn from the spindle, the distance between the spindle slider 4 and the sensor 10 on the fixed block 9 keeps changing due to the continuous up and down movement of the spindle slider 4. At this time, the distance is recorded and wirelessly transmitted to the PC through laser ranging, and then converted into the spring force and yarn tension. The slider spindle capable of detecting yarn tension in the three-dimensional knitting process of the present invention can realize the real-time detection and recording of yarn tension during the intermittent yarn release process of the spindle of the three-dimensional knitting machine, which is conducive to a better understanding of the tension fluctuation and further realizing the smooth operation of the spindle, and has the characteristics of simple structure, reliable principle and good quality effect.

[0030] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A slider-type braiding machine spindle capable of online monitoring of yarn tension, characterized in that: It includes a spindle rod assembly, a spindle slider arranged below the spindle rod assembly and elastically connected thereto, a bobbin adapter forming a ratchet mechanism with the spindle slider, a spindle seat arranged at the bottom of the spindle slider and a fixed block connected to the spindle seat, and the bobbin adapter is elastically connected to the spindle rod assembly; the spindle rod assembly drives the spindle slider to move axially, thereby driving the bobbin adapter to move axially, unlocking the ratchet structure to achieve spinning.

2. A slider-type braiding machine spindle capable of online monitoring of yarn tension as claimed in claim 1, characterized in that: The spindle rod assembly includes a sliding shaft, a yarn tube arranged parallel to the sliding shaft, and a yarn tube fixing clamp installed at the upper end of the yarn tube; the sliding shaft is connected to the spindle slider through a single spring, and the yarn tube adapter is connected to the sliding shaft through a double spring. During the tension increase process, the single spring is compressed to drive the spindle slider to move upward. When the tension is large enough, the double springs are compressed again, the sliding shaft moves upward, the yarn tube adapter is rotated, and the yarn is released from the yarn tube.

3. A slider-type braiding machine spindle capable of online monitoring of yarn tension as claimed in claim 1, characterized in that: The spindle seat is provided with a fixed block connection part, a rotating base connection part, a spindle rod assembly connection part and a battery element installation area. The fixed block is connected to the spindle seat by bolts, and the fixed block has an installation area for installing a sensor.

4. A slider-type knitting machine spindle capable of online monitoring of yarn tension as claimed in claim 2, characterized in that: A circular small hole is arranged at the tail of the yarn tube fixing clamp, a circular small hole is arranged on the left and right of the sliding shaft, a certain pulley is arranged on the outside of the spindle slider, and an arc-shaped claw is arranged on the inside of the spindle slider to form a ratchet mechanism with the yarn tube adapter.

5. The slider type braiding machine spindle capable of online monitoring of yarn tension according to claim 3, characterized in that: The bottom of the spindle seat is hollowed out as an embedded tension monitoring hardware system and battery element installation area, and two small holes are arranged up and down at the back. The upper hole is connected to the fixed block, and the lower hole is used for wiring to connect the battery at the bottom of the spindle seat and the sensor on the fixed block.

6. The slider type braiding machine spindle capable of online monitoring of yarn tension according to claim 1, characterized in that: A groove mechanism is designed above the fixing block to place the TOF laser ranging sensor, and a small hole is opened on the side to connect with the spindle seat through bolts.

Images