CN87209871U - Contactless electronic edge-absorbing apparatus for printing and dyeing machine - Google Patents

Abstract

The utility model discloses a contactless electronic edge-absorbing apparatus for printing and dyeing machines. Compared with the existing electronic edge-absorbing apparatus, two sides of the power supply return of an electromagnet respectively comprise the half-wave rectifying circuit of a silicon controlled and a follow current diode connected in parallel with the two ends of the electromagnet; a control loop adopts the transistor contactless switch of the photoelectric detection; a full-wave rectifying circuit is formed by using a main transformer and two diodes, and the electrical power supply of the control loop is realized through the voltage stabilization and the filtering; as the detecting rod and the connecting rod drive the shading plate in the electrical box, the detection is realized.

Description

Contactless electronic edge-absorbing apparatus for printing and dyeing machine

The utility model is a kind of dyeing machine contactless electron edge guide, is the improvement to the electronic edge guide of dyeing machine.

At present, generally adopt the electronic edge guide of TM11 type on China's textile industry dyeing machine, guarantee that cloth is pressed the certain position operation in the dyeing process, prevent left and right sides deflection, guarantee that cloth is straight.The every as shown in Figure 1 limit of this edge guide becomes full-wave rectifying circuit by two Group of Silicon Controlled Rectifier, for DC electromagnet L in the stainless steel roller ₁, L ₂Power supply.Control silicon controlled conducting with by just controlling electromagnet L ₁, L ₂Adhesive and release, unclamp and clamping with fixed rubber coated pressure bowl thereby drive the stainless steel roller.The silicon controlled gate pole is by mechanical contact K ₁, K ₂Control.When the cloth deflection, selvedge is run into a side test rod, makes spring leaf drive contact K by connecting rod ₁, K ₂Closure, two controllable silicons of the same side are in the positive-negative half-cycle conducting respectively of power supply, and the DC electromagnet adhesive overcomes spring tension the stainless steel roller is separated with rubber coated pressure bowl, and then cloth moves to opposite side.When cloth left test rod, electromagnet discharged again, because spring tension, roller clamps cloth again.Repeat above action repeatedly, reach the purpose of cloth by the certain position operation.Because of cloth swings often, to the contact is acted frequently, one day class Three moves the break-make number of times continuously and can reach five, 60,000 times, some work under bad environment of printing and dyeing mill in addition, steam mist alkali severity, electronic edge guide not can normally use, in general environment, because the mechanical contact life-span is limited, maintenance rate is very high.

The purpose of this utility model provides that a kind of cost is low, volume is little, and appearance structure can replace the contactless electron edge guide of former electronic edge guide fully.

The technical solution of the utility model as shown in Figure 2.Electromagnet L ₁, L ₂Current supply circuit respectively by a controllable silicon SCR ₁, SCR ₂Half-wave rectifying circuit realize.At electromagnet L ₁, L ₂Two ends sustained diode in parallel ₅, D ₆, so that strengthen the stable adhesive of negative half period electromagnet.Control loop has adopted the transistor noncontacting switch, by light emitting diode BG ₃, BG ₆, phototriode BG ₂, BG ₅With triode BG ₁, BG ₄Form.The power supply of control loop has utilized the transformer of major loop dexterously, passes through D ₁, D ₂The full-wave rectifying circuit, the voltage-stabiliser tube DW that form ₁, DW ₂Realize with filter capacitor C.Whether detect selvedge by the selvedge test rod in the control loop and be offset, if skew, test rod drivening rod, connecting rod drive the shadow shield action that is enclosed within the electrical box, then block the light of luminous tube.

Further set forth operation principle and embodiment below in conjunction with accompanying drawing:

Fig. 2 is an electrical schematic diagram of the present utility model, and Fig. 3 is a linkage.When selvedge is run into the detection feeler lever (1) of a side, drive shadow shield (3) action by connecting rod (2), block light emitting diode (4) (BG ₃Or BG ₆) light that sends, make phototriode (5) (BG ₂Or BG ₅) end triode BG then ₁(or BG ₄) end, collector voltage raises, through diode D ₃(or D ₄) the triggering controllable silicon SCR ₁(or SCR ₂) conducting, electromagnet L ₁(or L ₂) the energising adhesive, the stainless steel roller separates with rubber coated pressure bowl, and cloth is then shifted to opposite side, and test rod resets under the spring force effect, makes shadow shield retract the original place through connecting rod, and light emitting diode light makes the phototriode conducting again, triode BG ₁, BG ₄Saturated rapidly, controllable silicon turn-offs when bearing back-pressure, and electromagnet discharges, and two rollers are clamped by spring tension again.

The utility model circuit is simple, cost is low, volume is little, and external form and wiring can have the ground of change fully and replace former electronic edge guide. Because the transistor noncontacting switch is sealed in the electrical box, also in electrical box, the detection sensitivity reliability improves shadow shield, can be widely used in various The cloth of thickness kind. Carry out the processing of acid-proof, alkali, steam in addition on the technology, can adapt to various abominable printing and dyeing environment fully, diode D₅、D ₆The afterflow effect, not only make the adhesive of electromagnet more reliable and stable, and when controllable silicon was disconnected, the time-delay electromagnet of having kept several seconds zero point just discharged, this more meets the actual needs of inhaling limit technology, makes to inhale the limit effect and significantly improve, it is reliable to be active in one's movements. So that this edge guide adapts to the needs of China's dyeing very much, be conducive to apply.

If the utility model adopts photosensitive controllable silicon, control loop is simpler, also is a kind of embodiment of the present utility model.

Claims (1)

1. A kind of dyeing machine contactless electron edge guide is made up of DC electromagnet, electromagnet power supply and switching control section, it is characterized in that, is paid two controllable silicon SCR on limit by transformer for the power supply of DC electromagnet ₁, SCR ₂After carrying out single phase half wave rectification, supply two electromagnet L on both sides respectively ₁, L ₂, and at electromagnet L ₁, L ₂Last sustained diode in parallel ₅, D ₆, control loop has adopted the transistor noncontacting switch, and the power utilization main transformer of control loop passes through D ₁, D ₂The full-wave rectifying circuit of forming realizes, the detection of control loop be by the link gear that links to each other with the selvedge test rod drive the shadow shield that is enclosed in the electrical box by light-sensitive element control transistor noncontacting switch conducting and end.

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