CN2663472Y - Mesh placing mechanism of mesh placement machine - Google Patents

Abstract

The utility model discloses a mesh-bar replacement mechanism of lapper and is an improved structure of existing lapper. The utility model comprises a group of travel switches 32,36 and 37 that are used for collecting signals and a power transmission device that is used for driving the ring curtain 2 to operate and which comprises a frequency conversion electric machine 18 which is connected with the programmable controller 17. The programmable controller 17 is arranged inside the electric control box of the lapper. The utility model can make the thickness of the cotton fleece 7 that is spread on the base curtain 5 by changing the speed of the machine 18 and farther changing the operation speed of the ring curtain 2 according to practical need.

Description

The net laying mechanism of lapping machine

Technical field

The utility model discloses a kind of net laying mechanism of lapping machine, is the improvement to existing net laying mechanism.

Background technology

The lapping machine is made up of frame, net laying mechanism, lapper, and net laying mechanism plays an important role in the lapping machine, and especially the quality good or not of lapping can directly have influence on the nonwoven fabric end product quality.As long as the net laying mechanism laying is guaranteed evenly to the thickness that becomes the web on the lace curtaining (becoming lace curtaining to claim end curtain again), just can be guaranteed the thickness uniformity of final finished substantially.And existing net laying mechanism is difficult to reach and makes the uniformity that is routed to into the web on the lace curtaining satisfy coherence request, and it is thin that the concentrated area shows the thick side in addition of a side.For this problem is described, the applicant is that example is analyzed with the accompanying drawing.Ring curtain 2 claims that again the lower berth lace curtaining is uniform motion theoretically, but in fact in its motion process, there is the factor of skidding, be that drive roll 1 can produce between the two with ring curtain 2 and skids, and both coefficients that skids of cart 6 and dolly 4 are different, when dolly 4 moves to the left from the right side, in the process that B point migration A is ordered excessively, the coefficient that skids diminishes gradually, when arriving at the A point, the coefficient that skids becomes minimum, therefore easily forming thick web at A point place and be laid on the end curtain 5, why say the coefficient minimum of skidding when A point, is when moving to left because of dolly 4, cart 6 also moves to left, the breast roll 3 of cart 6 by disturbing, shortens the distance of ring curtain 2 to drive roll 1, and amount of deflection reduces; Otherwise, when dolly 4 moves right from the A point, in the process that B point migration C is ordered excessively, the coefficient that skids becomes big gradually, when arriving at the C point, the coefficient that skids becomes maximum, is because dolly 4 is when moving to right, cart 6 also moves to right, the distance that the breast roll 3 of cart 6 leaves drive roll 1 reaches maximum, makes the distance of ring curtain 2 tediously long, and amount of deflection increases, therefore in the process that the B point is ordered to C excessively web attenuation gradually can appear, and the thinnest to C point web.The applicant finds, although this defective objective reality, but the different rotating speeds of drive roll 1 that fully can be by changing net laying mechanism is eliminated, yet with regard to present net laying mechanism, because of the motor as power source that it adopted is the uniform speed electric motor, so can't eliminate the defective that web 7 thickness that spread on the end curtain 5 differ.

Summary of the invention

Task of the present utility model is that a kind of net laying mechanism that can guarantee to spread the lapping machine of putting the web thickness uniformity unanimity on the curtain on earth will be provided.

Task of the present utility model is finished like this, a kind of net laying mechanism of lapping machine, comprise that 32,36,37 and one on one group of travel switch that is used to gather signal is in order to order about the actuating unit of ring curtain 2 operations, this actuating unit comprises a motor 18, described motor 18 is a variable-frequency motor, this variable-frequency motor is connected with programmable controller 17, and programmable controller 17 is arranged in the electric control box of lapping machine.

The utlity model has and to reach consistent advantage according to the web 7 thickness uniformitys that the speed of service that need change ring curtain 2 by the velocity variations of motor 18 obtains to spread on the end curtain 5.

Accompanying drawing and drawing explanation

Accompanying drawing is the net laying mechanism schematic diagram of the utility model lapping machine.

The specific embodiment

Please see accompanying drawing for details, be provided with in order to carrying the convoying curtain 10 of web 7 by a pair of beaming roller 9 on frame 8, this 10 drives this convoying curtain beaming rollers 9 by motor 35 by belt 26 and realizes moving.Large and small car guide rail 11,38, large and small car 6,4 are set on frame 8, and cart 6 slides along guide rail 11 by guide rail wheel 30, and dolly 4 is slided along guide rail 38 by its guide rail wheel 24.Compensation curtain 13 be set in two compensation curtain rollers 31,31 ' on, compensation curtain roller 31,31 ' the roll shaft axle head respectively be provided with regulating wheel 12, be nested with tensioning chain 28 on it, two ends of tensioning chain 28 are solid on dolly 4.Compensation curtain roller 31 ' an end of the sheathed driving-chain 19 of roll shaft axle head, the other end of driving-chain 19 is nested with on the roll shaft of breast roll 3.Ring curtain 2 is nested with respectively on being located at drive roll 1, upper and lower roll 20,21, the breast roll 3 on the frame 8 and being positioned at cotton guiding roller 39 on the trolley frame 4.Dolly 4 is done left and right moving by driving-chain 33, and driving-chain 33 is driven by belt pulley 22, and belt pulley 22 is driven by the belt 24 with motor 23 bindings.The actuating unit that orders about 2 operations of ring curtain comprises motor 18, reductor 16, belt 14, and motor 18 is connected with reductor 16, and reductor is installed on the support 15, and support 15 is fixed on the frame 8, and reductor 16 links by belt 14 and drive roll 1.Wherein, motor 18 is a variable-frequency motor, and it is electrically connected with programmable controller 17 by circuit, and the model of being produced by MIT that programmable controller 17 adopts is the programmable controller of FXO.Shown in figure, travel switch 32,36,37 is separately positioned on for a short time A point, B point, three positions of C point that also mark in the drawings on the vehicle guide 38.Because schematic structure is roughly identical with prior art, institute's distinctive points only is that the applicant has changed over variable-frequency motor with original uniform speed electric motor.And be connected with programmable controller 17 circuit by circuit, and, one group of travel switch 32,36,37 also is connected with programmable controller 17 circuit.Therefore, the applicant has omitted the detailed narration to each parts of net laying mechanism.

Following applicant's accompanying drawings the utility model is to reach balance with the gage distortion problem eliminating web 7 and occur as the velocity variations of its motor 18 how in process of deployment.Illustrated web 7 to spread into the track that moves towards on the end curtain 5 through convoying curtain 10, idler roller 29, compensation curtain 13, ring curtain 2, cotton guiding roller 39, the cotton roller 25 in shop successively in the drawings.Is left in the process of A point motion at dolly 4 from the C point, also right-to-left operation of cart 6, dolly 4 operation more left, centre-to-centre spacing between top roll 20 and the drive roll 1 reduces all the more, reducing also appears in the amount of deflection of ring curtain 2, frictional force between itself and the drive roll 1 reduces gradually, when dolly 4 is crossed the B point to the A point, motor 18 is progressively slowed down, thereby the web 7 of downward conveying is reduced, in this process, the signal that motor 18 slows down is to touch travel switch 36 by the travel switch contact 27 on the dolly 4, thereby give programmable controller 17 to signal, give motor 18 by programmable controller 17 to signal again, make its deceleration.And when travel switch contact 27 touches travel switch 32, then dolly 4 just begins from the A point to the i.e. motion from left to right of C point, cart 6 is operation from left to right also, dolly 4 operation more to the right, centre-to-centre spacing between top roll 20 and the drive roll 1 becomes big all the more, increasing also appears in the amount of deflection of ring curtain 2, frictional force between ring curtain 2 and the drive roll 1 increases gradually, when dolly 4 is crossed the B point to the C point, motor 18 is progressively raised speed, thereby the web 7 that is passed to downwards on the end curtain 5 is increased, in this process, the reduce-speed sign of motor 18 is to touch travel switch 36 by the travel switch contact 27 on the dolly 4, thereby give programmable controller 17 to signal, give motor 18 with signal again, make its speed-raising, when travel switch contact 27 touched travel switch 37, dolly 4 just moved from right to left.In said process, dolly 4 to A points, the rotating speed of motor 18 is the slowest; And the C point that arrives, then rotating speed is the fastest.As seen, the utility model is to reach compensation by the rotating speed that changes motor 18, uses and eliminates web 7 gage distortion phenomenons, guarantees the nonwoven fabric product quality.

Claims (1)

1, a kind of net laying mechanism of lapping machine, comprise that one group of travel switch (32) that is used to gather signal, (36), (37) and one are in order to order about the actuating unit of ring curtain (2) operation, this actuating unit comprises a motor (18), it is characterized in that described motor (18) is a variable-frequency motor, this variable-frequency motor is connected with programmable controller (17), and programmable controller (17) is arranged in the electric control box of lapping machine.