阅读说明：本技术 一种针织机上的纱线张力检测装置 (Yarn tension detection device on knitting machine ) 是由 姜林 于 2021-09-26 设计创作，主要内容包括：本发明属于纱线生产设备技术领域,尤其是涉及一种针织机上的纱线张力检测装置,包括防护箱,所述防护箱上设置有张力传感器主体,所述防护箱中转动连接有两个丝杠,且两个丝杠上均螺纹连接有螺纹块,两个所述螺纹块均与防护箱滑动连接,且两个螺纹块共同固定连接有固定盒,所述防护箱上设置有与两个丝杠相配合的调节机构,所述固定盒中转动连接有三个转轴。本发明可可以对检测轮和辅助轮进行收放,使得在不作业时可以对检测轮和辅助轮进行防护,同时,本发明可以在作业的过程中,及时对辅助轮和检测轮进行降温,且本发明可以消除经过辅助轮和检测轮的纱线上的静电,避免纱线在静电的作用下吸灰。(The invention belongs to the technical field of yarn production equipment, and particularly relates to a yarn tension detection device on a knitting machine, which comprises a protective box, wherein a tension sensor main body is arranged on the protective box, two lead screws are rotatably connected in the protective box, thread blocks are respectively in threaded connection with the two lead screws, the two thread blocks are respectively in sliding connection with the protective box, the two thread blocks are jointly and fixedly connected with a fixing box, an adjusting mechanism matched with the two lead screws is arranged on the protective box, and three rotating shafts are rotatably connected in the fixing box. The invention can retract and release the detection wheel and the auxiliary wheel, so that the detection wheel and the auxiliary wheel can be protected when not in operation, meanwhile, the auxiliary wheel and the detection wheel can be cooled in time in the operation process, and the invention can eliminate static electricity on yarns passing through the auxiliary wheel and the detection wheel and avoid dust absorption of the yarns under the action of the static electricity.)

1. A yarn tension detection device on a knitting machine comprises a protective box (1) and is characterized in that a tension sensor main body (2) is arranged on the protective box (1), two lead screws (3) are connected in the protective box (1) in a rotating manner, thread blocks (4) are connected on the two lead screws (3) in a threaded manner, the two thread blocks (4) are connected with the protective box (1) in a sliding manner, a fixed box (5) is fixedly connected on the two thread blocks (4) together, an adjusting mechanism (6) matched with the two lead screws (3) is arranged on the protective box (1), three rotating shafts (7) are connected in the fixed box (5) in a rotating manner, fan blades (8) are fixedly connected on each rotating shaft (7), a driving mechanism (9) matched with one rotating shaft (7) is arranged in the fixed box (5), and a trigger box (26) is fixedly connected in the protective box (1), the trigger device is characterized in that a sliding plate (27) is connected in a sliding manner in the trigger box (26), a plurality of reset springs (28) are fixedly connected between the sliding plate (27) and the trigger box (26), a first trigger guide block (29) is fixedly connected to one side of the sliding plate (27), a second trigger guide block (30) matched with the first trigger guide block (29) is fixedly connected to the inner wall of one side of the trigger box (26), a push rod (31) is fixedly connected to the fixed box (5), one end of the push rod (31) extends into the trigger box (26) and extrudes the sliding plate (27), the first trigger guide block (29) is connected with the tension sensor main body (2) and the driving mechanism (9) in series, a linkage mechanism (10) is arranged between the rotating shafts (7), a point discharge device (33) is arranged in the fixed box (5), and the fixed box (5) is fixedly connected with a frame (16) through two supporting rods (15), the frame (16) is rotatably connected with a detection wheel (17) matched with the tension sensor main body (2), and the frame (16) is rotatably provided with two auxiliary wheels (18).

2. The yarn tension detecting device of the knitting machine according to claim 1, characterized in that the adjusting mechanism (6) comprises a worm (61), a rotating handle (62) and two worm wheels (63), the worm (61) is rotatably arranged in the protective box (1), one end of the worm (61) penetrates through the protective box (1) and is fixedly connected with the rotating handle (62), the two worm wheels (63) are respectively sleeved on the corresponding lead screws (3), and the two worm wheels (63) are both meshed with the worm (61).

3. The yarn tension detecting device of the knitting machine according to claim 1, wherein the driving mechanism (9) includes a driving motor (91), a first bevel gear (92) and a second bevel gear (93), a fixing plate (19) is fixedly connected to the fixing box (5), the driving motor (91) is disposed on the fixing plate (19), an output end of the driving motor (91) is fixedly connected to the first bevel gear (92), the driving motor (91) is electrically connected to the first trigger guide block (29), the rotating shaft (7) on the right side is fixedly sleeved with the second bevel gear (93), and the second bevel gear (93) is engaged with the first bevel gear (92).

4. The yarn tension detecting device on the knitting machine according to claim 1, characterized in that the linkage mechanism (10) comprises a double-grooved wheel (101) and two driven wheels (102), the rotating shaft (7) in the middle is fixedly sleeved with the double-grooved wheel (101), the rotating shafts (7) on two sides are respectively fixedly sleeved with the corresponding driven wheels (102), and the double-grooved wheel (101) is in transmission connection with the two driven wheels (102) through a synchronous belt (20).

5. The yarn tension detecting device of claim 1, wherein the point discharging device (33) is composed of a power supply mechanism (11) and a conductive mechanism (12), the power supply mechanism (11) is disposed on the fan blade (8), the conductive mechanism (12) is disposed between the rotating shaft (7) and the fixing box (5), the power supply mechanism (11) is electrically connected with the conductive mechanism (12), a fixing rod (32) is fixedly connected in the fixing box (5), an electric storage plate (13) electrically connected with each conductive mechanism (12) is disposed on the fixing rod (32), a plurality of point-shaped guide blocks (14) are fixedly connected on the fixing rod (32), and each point-shaped guide block (14) is connected with the electric storage plate (13) in series.

6. The yarn tension detecting device of the knitting machine as claimed in claim 5, wherein the power mechanism (11) comprises a power cavity (111), a vibrating block (112) and piezoelectric ceramic plates (113), the power cavity (111) is arranged on the fan blade (8), the vibrating block (112) is rotatably arranged in the power cavity (111), the piezoelectric ceramic plates (113) are embedded on the vibrating block (112), the number of the vibrating blocks (112) is multiple, and the number of the piezoelectric ceramic plates (113) is equal to that of the vibrating blocks (112).

7. The yarn tension detecting device of claim 6, wherein the conductive mechanism (12) comprises an L-shaped conductive block (121) and an annular conductive groove (122), the L-shaped conductive block (121) is fixedly connected to the rotating shaft (7), the annular conductive groove (122) is opened on the inner top surface of the upper end of the fixed box (5), the L-shaped conductive block (121) is slidably connected with the annular conductive groove (122), an electric connecting strip in contact connection with the L-shaped conductive block (121) is embedded in the annular conductive groove (122), the L-shaped conductive block (121) is electrically connected with the piezoelectric ceramic plate (113), and the electric connecting strip in the annular conductive groove (122) is electrically connected with the electric storage plate (13).

8. Yarn tension detecting device according to claim 1, characterised in that two connecting rods (21) are fixedly connected to the frame (16), and a cover plate (22) cooperating with the protective box (1) is fixedly connected to both connecting rods (21).

9. The yarn tension detecting device of the knitting machine according to claim 8, characterized in that a plurality of inserting blocks (23) are fixedly connected to the cover plate (22), and a slot (24) matched with the inserting blocks (23) is formed on the protective box (1).

10. The yarn tension detecting device of claim 1, wherein a dust screen (25) is fixedly arranged at the lower port of the fixing box (5), and the lead screw (3) has a lead angle smaller than the friction angle between the lead screw (3) and the thread block (4).

Technical Field

The invention belongs to the technical field of yarn production equipment, and particularly relates to a yarn tension detection device on a knitting machine.

Background

The knitting machine is a technological process of forming loops by using knitting needles on various raw materials and varieties of yarns and then connecting the loops into knitted fabrics in a series-sleeved mode, nowadays, in order to ensure that tension of the yarns in the production process meets requirements, a tension detection device is generally arranged on the knitting machine, the tension in the production process of the yarns is detected on line through the tension detection device, if the tension does not meet the requirements, the tension detection device transmits data to a main control machine, and tension is adjusted in time through auxiliary equipment regulated and controlled by the main control machine so as to ensure the stability of the tension of the yarns.

The existing tension detection device generally comprises a yarn tension sensor and a detection wheel, and can detect and monitor the tension of yarn in real time through the cooperation of the yarn tension sensor and the detection wheel, for example, the prior open patent "a yarn tension on-line detection monitoring device comprises a yarn tension sensor main body, wherein one end of the yarn tension sensor main body is connected with the detection wheel, the yarn tension sensor main body is installed at one side of a supporting plate, and two sides of the yarn tension sensor main body are respectively provided with a bracket … …", the installation structure of the tension detection device is optimized in the implementation process of the scheme, so that the installation is more convenient, but the scheme can not timely cool the auxiliary wheel and the detection wheel in the implementation process, and the auxiliary wheel and the detection wheel can generate heat because the yarn continuously rubs with the auxiliary wheel and the detection wheel, if the temperature is not lowered in time, the yarn is easily damaged under the action of frictional heat, in addition, static electricity is generated when the yarn is rubbed by the auxiliary wheel and the detection wheel, and if the yarn is not processed in time, the yarn is easily adsorbed with dust under the action of the static electricity.

To this end, we propose a yarn tension detecting device on a knitting machine to solve the above problems.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a yarn tension detecting device for a knitting machine.

In order to achieve the purpose, the invention adopts the following technical scheme: a yarn tension detection device on a knitting machine comprises a protective box, wherein a tension sensor main body is arranged on the protective box, two lead screws are rotatably connected in the protective box, thread blocks are respectively in threaded connection with the two lead screws, the two thread blocks are respectively in sliding connection with the protective box, a fixing box is fixedly connected with the two thread blocks together, an adjusting mechanism matched with the two lead screws is arranged on the protective box, three rotating shafts are rotatably connected in the fixing box, fan blades are fixedly connected on each rotating shaft, a driving mechanism matched with one of the rotating shafts is arranged in the fixing box, a trigger box is fixedly connected in the protective box, a sliding plate is slidably connected in the trigger box, a plurality of reset springs are fixedly connected between the sliding plate and the trigger box, a first trigger guide block is fixedly connected to one side of the sliding plate, and a second trigger guide block matched with the first trigger guide block is fixedly connected to the inner wall of one side of the trigger box, the fixing box is fixedly connected with a top rod, one end of the top rod extends into the triggering box and extrudes the sliding plate, the first triggering guide block is connected with the tension sensor main body and the driving mechanism in series, a linkage mechanism is arranged between each rotating shaft, a point discharging device is arranged in the fixing box, a power supply mechanism is arranged on each fan blade, a conductive mechanism matched with the power supply mechanism is arranged between each rotating shaft and the fixing box, a fixing rod is fixedly connected in the fixing box, an electric storage plate electrically connected with each conductive mechanism is arranged on each fixing rod, a plurality of point-shaped guide blocks are fixedly connected on each fixing rod, each point-shaped guide block is connected with the electric storage plate in series, the fixing box is fixedly connected with a frame through two support rods, and a detection wheel matched with the tension sensor main body is rotatably connected on the frame, and the frame is provided with two auxiliary wheels in a rotating way.

In the yarn tension detecting device of the knitting machine, the adjusting mechanism comprises a worm, a rotating handle and two worm wheels, the worm is rotatably arranged in the protective box, one end of the worm penetrates through the protective box and is fixedly connected with the rotating handle, the two worm wheels are respectively sleeved on the corresponding lead screws, and the two worm wheels are meshed with the worm.

In the yarn tension detecting device of the knitting machine, the driving mechanism comprises a driving motor, a first bevel gear and a second bevel gear, a fixing plate is fixedly connected in the fixing box, the driving motor is arranged on the fixing plate, the output end of the driving motor is fixedly connected with the first bevel gear, the driving motor is electrically connected with the first trigger guide block, the rotating shaft on the right side is fixedly sleeved with the second bevel gear, and the second bevel gear is meshed with the first bevel gear.

In the yarn tension detecting device of the knitting machine, the linkage mechanism comprises a double-grooved pulley and two driven pulleys, the rotating shaft positioned in the middle is fixedly sleeved with the double-grooved pulley, the rotating shafts positioned on two sides are respectively fixedly sleeved with the corresponding driven pulleys, and the double-grooved pulley is in transmission connection with the two driven pulleys through a synchronous belt.

In the yarn tension detecting device of the knitting machine, the point discharging device is composed of a power supply mechanism and a conductive mechanism, the power supply mechanism is arranged on the fan blade, the conductive mechanism is arranged between the rotating shaft and the fixing box, the power supply mechanism is electrically connected with the conductive mechanism, a fixing rod is fixedly connected in the fixing box, an electric storage plate electrically connected with each conductive mechanism is arranged on the fixing rod, a plurality of point-shaped guide blocks are fixedly connected onto the fixing rod, and each point-shaped guide block is connected with the electric storage plate in series.

In foretell yarn tension detection device on knitting machine, power mechanism includes power supply cavity, vibrating mass and piezoceramics piece, the power supply cavity is seted up on the flabellum, the vibrating mass rotates and sets up in the power supply cavity, and piezoceramics piece inlays and locates on the vibrating mass, the quantity of vibrating mass is a plurality of, and the quantity of piezoceramics piece equals with the vibrating mass.

In the yarn tension detecting device of the knitting machine, the conductive mechanism includes an L-shaped conductive block and an annular conductive groove, the L-shaped conductive block is fixedly connected to the rotating shaft, the annular conductive groove is formed in the inner top surface of the upper end of the fixing box, the L-shaped conductive block is slidably connected with the annular conductive groove, an electrical connecting strip in contact connection with the L-shaped conductive block is embedded in the annular conductive groove, the L-shaped conductive block is electrically connected with the piezoelectric ceramic piece, and the electrical connecting strip in the annular conductive groove is electrically connected with the storage plate.

In the yarn tension detecting device of the knitting machine, the frame is fixedly connected with two connecting rods, and the two connecting rods are fixedly connected with the cover plate matched with the protective box.

In the yarn tension detecting device of the knitting machine, the cover plate is fixedly connected with a plurality of inserting blocks, and the protective box is provided with slots matched with the inserting blocks.

In the yarn tension detecting device of the knitting machine, a dust screen is fixedly arranged at the lower port of the fixing box, and the lead angle of the lead screw is smaller than the friction angle between the lead screw and the thread block.

The invention has the beneficial effects that: the adjusting mechanism can regulate and control the synchronous rotation of the two lead screws, and further can control the retraction and release of the auxiliary wheel and the detection wheel, so that when the device is not used, the auxiliary wheel and the detection wheel can be retracted for protection, the exposure and the outside are avoided, the cover plate can be matched with the retraction and release automatic closing protective box of the auxiliary wheel and the detection wheel through the arranged connecting rod, each rotating shaft can be controlled to synchronously rotate through the matching of the arranged driving mechanism and the linkage mechanism, the cost of additionally arranging driving equipment is avoided, meanwhile, each fan blade can synchronously rotate, wind power is generated to cool the auxiliary wheel and the detection wheel in time, the current can be generated through the arranged power supply mechanism in cooperation with the rotation of the fan blade, the complexity of an external power supply is avoided, the current can be guided into the storage plate in cooperation with the rotation of the rotating shaft through the arranged conductive mechanism, the winding condition is avoided when the lead is used, the current storage plate can guide current into each pointed guide block after accumulating the current, the pointed ends of the pointed guide blocks can generate corona discharge, further the air in the pointed end areas of the pointed guide blocks is ionized, a large amount of positive and negative charges are generated, the positive and negative charges can be close to the yarn under the action of wind power of the fan blades, the charges on the yarn are neutralized, and static electricity of the yarn is eliminated.

In summary, the following steps: through the setting of this device, can receive and release detection wheel and auxiliary wheel for can protect detection wheel and auxiliary wheel when not operating, simultaneously, this device can in time cool down auxiliary wheel and detection wheel at the in-process of operation, and this device can eliminate the static on the yarn through auxiliary wheel and detection wheel, avoids the yarn to inhale the ash under the effect of static.

Drawings

FIG. 1 is a schematic view of the overall structure of a yarn tension detecting device of a knitting machine according to the present invention;

FIG. 2 is a schematic cross-sectional view of a protective box of a yarn tension detecting device of a knitting machine according to the present invention;

FIG. 3 is a schematic cross-sectional view of a fixing case of a yarn tension detecting apparatus of a knitting machine according to the present invention;

FIG. 4 is a schematic view of the internal structure of the fan blade of the yarn tension detecting device of the knitting machine according to the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 6 is an enlarged view of the structure at B in FIG. 2;

FIG. 7 is an enlarged view of the structure at C in FIG. 3;

fig. 8 is a schematic view of the internal structure of a trigger box of the yarn tension detecting device of the knitting machine provided by the invention.

In the figure: the device comprises a protection box 1, a tension sensor body 2, a lead screw 3, a thread block 4, a fixing box 5, an adjusting mechanism 6, a worm 61, a rotating handle 62, a worm wheel 63, a rotating shaft 7, fan blades 8, a driving mechanism 9, a driving motor 91, a first bevel gear 92, a second bevel gear 93, a linkage mechanism 10, a double-grooved wheel 101, a driven wheel 102, a power mechanism 11, a power cavity 111, a vibrating block 112, a piezoelectric ceramic plate 113, a conductive mechanism 12, a conductive block 121L, a conductive groove 122 annular, a storage battery plate 13, a guide block 14 pointed at the tip end, a support rod 15, a frame 16, a detection wheel 17, an auxiliary wheel 18, a fixing plate 19, a synchronous belt 20, a connecting rod 21, a cover plate 22, an insertion block 23, a slot 24, a dustproof net 25, a trigger box 26, a sliding plate 27, a reset spring 28, a first trigger guide block 29, a second trigger guide block 30, a push rod 31, a fixed rod 32 and a tip discharge device 33.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

As shown in fig. 1-8, a yarn tension detection device on a knitting machine, including a protection box 1, a tension sensor main body 2 is arranged on the protection box 1, two lead screws 3 are rotatably connected in the protection box 1, and thread blocks 4 are all in threaded connection on the two lead screws 3, the two thread blocks 4 are all in sliding connection with the protection box 1, and a fixing box 5 is fixedly connected to the two thread blocks 4 together, a dust screen 25 is fixedly arranged at a lower port of the fixing box 5, a thread lead angle of the lead screw 3 is smaller than a friction angle between the lead screw 3 and the thread block 4, the dust screen 25 is arranged to prevent dust from entering the fixing box 5, the thread lead angle of the lead screw 3 is designed to realize self-locking between the lead screw 3 and the thread block 4, so as to avoid manual locking complexity, and an adjusting mechanism 6 matched with the two lead screws 3 is arranged on the protection box 1.

Adjustment mechanism 6 includes worm 61, change 62 and two worm wheel 63, worm 61 rotates and sets up in protective housing 1, and the one end of worm 61 run through protective housing 1 and with change 62 fixed connection, two worm wheel 63 cup joint respectively on corresponding lead screw 3, and two worm wheel 63 all mesh with worm 61 mutually, worm 61 and two worm wheel 63's cooperation through setting up, convenient to use person controls two synchronous rotations of lead screw 3 through changeing 62, it is connected with three pivot 7 to rotate in the fixed box 5, and equal fixedly connected with flabellum 8 on each pivot 7, be provided with in the fixed box 5 with one of them pivot 7 matched with actuating mechanism 9.

The protective box 1 is fixedly connected with a trigger box 26, the trigger box 26 is connected with a sliding plate 27 in a sliding manner, a plurality of reset springs 28 are fixedly connected between the sliding plate 27 and the trigger box 26, one side of the sliding plate 27 is fixedly connected with a first trigger guide block 29, one side inner wall of the trigger box 26 is fixedly connected with a second trigger guide block 30 matched with the first trigger guide block 29, a push rod 31 is fixedly connected on the fixed box 5, one end of the push rod 31 extends into the trigger box 26 and extrudes the sliding plate 27, the first trigger guide block 29 is connected with the tension sensor main body 2 and the driving mechanism 9 in series, a pressure switch can be formed through the matching of the first trigger guide block 29, the second trigger guide block 30 and the reset springs 28, meanwhile, the push rod 31 can be matched with the movement of the fixed box 5 to automatically move up and down, so that the first trigger guide block 29 and the second trigger guide block 30 can be automatically butted or separated, and then make tension sensor main part 2 and actuating mechanism 9 can coordinate the automatic circular telegram that switches on of the motion of fixed box 5, form whole linkage, avoided the manual work to control first trigger guide block 29 and the second trigger guide block 30 butt joint in addition or the loaded down with trivial details of separation.

Actuating mechanism 9 includes driving motor 91, first bevel gear 92 and second bevel gear 93, fixedly connected with fixed plate 19 in the fixed box 5, and driving motor 91 sets up on fixed plate 19, driving motor 91's output and first bevel gear 92 fixed connection, and driving motor 91 and first trigger guide 29 electric connection, pivot 7 and second bevel gear 93 that are located the right side are fixed to be cup jointed, and second bevel gear 93 meshes with first bevel gear 92 mutually, cooperation through the first bevel gear 92 and the second bevel gear 93 that set up, be convenient for driving motor 91 drive one of them pivot 7 and rotate.

A linkage mechanism 10 is arranged between each rotating shaft 7, each linkage mechanism 10 comprises a double-grooved wheel 101 and two driven wheels 102, the rotating shaft 7 in the middle is fixedly sleeved with the double-grooved wheel 101, the rotating shafts 7 on two sides are respectively fixedly sleeved with the corresponding driven wheels 102, the double-grooved wheels 101 are in transmission connection with the two driven wheels 102 through synchronous belts 20, and through the matching of the double-grooved wheels 101 and the two driven wheels 102, each rotating shaft 7 can rotate synchronously, and the cost of additionally arranging driving equipment is avoided.

Be provided with point discharge device 33 in the fixed box 5, point discharge device 33 comprises electrical power generating mechanism 11 and electrically conductive mechanism 12, electrical power generating mechanism 11 sets up on flabellum 8, and electrically conductive mechanism 12 sets up between pivot 7 and fixed box 5, electrical power generating mechanism 11 and electrically conductive mechanism 12 electric connection, fixedly connected with dead lever 32 in the fixed box 5, and be provided with the accumulator plate 13 with each electrically conductive mechanism 12 electric connection on the dead lever 32, a plurality of sharp guide blocks 14 of fixedly connected with on the dead lever 32, and each sharp guide block 14 all establishes ties with accumulator plate 13.

The power mechanism 11 comprises a power cavity 111, a vibrating block 112 and piezoelectric ceramic pieces 113, the power cavity 111 is arranged on the fan blades 8, the vibrating block 112 is rotatably arranged in the power cavity 111, the piezoelectric ceramic pieces 113 are embedded on the vibrating block 112, the number of the vibrating blocks 112 is multiple, the number of the piezoelectric ceramic pieces 113 is equal to that of the vibrating blocks 112, the vibrating blocks 112 and the piezoelectric ceramic pieces 113 are matched, the piezoelectric ceramic pieces 113 can be matched with the fan blades 8 to move, power generation is performed on the piezoelectric ceramic pieces 113, and the complexity of an external power supply is avoided.

The conducting mechanism 12 includes an L-shaped conducting block 121 and an annular conducting groove 122, the L-shaped conducting block 121 is fixedly connected to the rotating shaft 7, the annular conducting groove 122 is formed in the inner top surface of the upper end of the fixing box 5, the L-shaped conducting block 121 is slidably connected with the annular conducting groove 122, an electrical connecting strip in contact connection with the L-shaped conducting block 121 is embedded in the annular conducting groove 122, the L-shaped conducting block 121 is electrically connected with the piezoelectric ceramic plate 113, the electrical connecting strip in the annular conducting groove 122 is electrically connected with the electricity storage plate 13, the L-shaped conducting block 121 can rotate in cooperation with the rotating shaft 7 through the cooperation of the electrical connecting strips in the L-shaped conducting block 121 and the annular conducting groove 122, and current generated by the piezoelectric ceramic plate 113 is led into the electricity storage plate 13 through the annular conducting groove 122, so that the winding condition of a conducting wire is avoided.

Fixed box 5 is through two bracing pieces 15 fixedly connected with frames 16, it is connected with the detection wheel 17 with tension sensor main part 2 matched with to rotate on the frame 16, and it is provided with two auxiliary wheels 18 to rotate on the frame 16, two connecting rods 21 of fixedly connected with on the frame 16, and the common fixedly connected with of two connecting rods 21 and protective housing 1 matched with apron 22, connecting rod 21 through setting up, make apron 22 can cooperate receiving and releasing of auxiliary wheel 18 and detection wheel 17, realize the automatic start-stop to protective housing 1, the usability of device has been made convenient, a plurality of inserted blocks 23 of fixedly connected with on the apron 22, and protective housing 1 is last to have seted up with inserted block 23 matched with slot 24, the cooperation of inserted block 23 and slot 24, can improve the closed compactness of apron 22.

The operating principle of the present invention will now be described as follows: when the device is used, the device can be installed on a knitting machine by referring to the installation and fixing mode of the patent with the application number of CN202022045231.8, when the device is used, firstly, the yarn to be produced on the knitting machine is wound on the auxiliary wheel 18 and the detection wheel 17, then the rotating handle 62 is rotated, the rotating handle 62 drives the worm 61 to rotate, under the transmission of the two worm wheels 63, the two lead screws 3 can synchronously rotate, at the moment, the two thread blocks 4 can drive the frame 16 to slide out of the protective box 1 through the fixing box 5, simultaneously, the fixing box 5 can drive the ejector rod 31 to move downwards, under the elastic force of the reset spring 28, the first trigger guide block 29 can slowly approach the second trigger guide block 30, when the auxiliary wheel 18 and the detection wheel 17 on the frame 16 extend out of the required distance, the rotating handle 62 stops rotating, at the moment, the first trigger guide block 29 can be butted with the second trigger guide block 30 to form a closed loop, so that the tension sensor main body 2 and the driving motor 91 are electrified to start, the tension sensor body 2 and the detection wheel 17 are engaged to detect the tension of the yarn passing through the detection wheel 17.

The driving motor 91 drives the first bevel gear 92 to rotate, under the transmission of the second bevel gear 93, the first bevel gear 92 drives the right rotating shaft 7 to rotate, under the cooperation of the double-grooved pulley 101 and the two driven pulleys 102, each rotating shaft 7 can rotate synchronously, and each fan blade 8 can rotate synchronously to generate wind power, the wind power can act on the auxiliary wheel 18 and the detection wheel 17 through the dustproof net 25 to cool the auxiliary wheel 18 and the detection wheel 17, meanwhile, the fan blade 8 can make the vibrating block 112 in the power supply cavity 111 vibrate in the rotating process, so that the piezoelectric ceramic sheet 113 can convert the vibrating force into electric power, the electric current is led into the annular conductive groove 122 through the L-shaped conductive block 121, and then is accumulated on the storage battery board 13 through the annular conductive groove 122, the storage battery board 13 can distribute the electric current to each pointed conductive block 14, so that each pointed conductive block 14 can discharge corona, the surrounding air is ionized to generate positive and negative charges, and the positive and negative charges can be blown to the yarns under the action of the wind force of the fan blades 8 so as to neutralize the charges on the yarns and avoid the static electricity generated by the yarns.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.