Film volume unwinding device
(1) technical field
The utility model relates to the Fabricating machinery of diaphragm cylinder material, is specially a kind of film volume unwinding device.
(2) background technology
Plastic sheeting, paper or cloth all will be wound on the film volume that mandrel becomes reel at process of manufacture, and big film coil diameter can reach more than 1 meter.
The film of winding twists in and carries out next step and add man-hour, when for example getting into cutting machine, coating machine, MULTILAYER COMPOSITE equipment, coating apparatus etc., all needs unwinding device that the diaphragm of reeling is launched once more, supplies next process to use.In the process that diaphragm launches, require membrane tension to regulate, the phase center line left and right sides, edge of diaphragm is adjustable.Traditional unwinding device volume core just is placed on the two stands rotationally, the film volume is erected, by the pulling of subsequent processing, emit diaphragm.The rotor inertia of film volume is very big when completely rolling up, and membrane tension is often excessive, unreels that the film coil coil-diameter diminishes gradually in the process, and diaphragm again can be loose, causes the edge to swing, and is difficult to stablely, influences the processing of subsequent processing.Wide cut diaphragm (fabric width is more than three meters) particularly, the centering problem is more outstanding.
(3) utility model content
The purpose of the utility model is a kind of film volume of design unwinding device, disposes oscillating oil cylinder, can realize unreeling diaphragm automatic tracking centering.
The utility model design-calculated film is rolled up unwinding device, comprises the volume core of unwinding rack and coiling diaphragm, and the volume core of coiling diaphragm is installed in rotation on 2 unwinding racks; The bottom of two unwinding racks links to each other; Fixing base is arranged under the unwinding rack, axial n bar line slideway is arranged on the base, n is 2~8 even number; Each fixing slide block that matches with line slideway in unwinding rack bottom, slide block is embedded on the line slideway.The oscillating oil cylinder cylinder barrel is axially, is fixed on the base, and its piston rod is connected with unwinding rack.The piston rod of oscillating oil cylinder is flexible promptly to be driven unwinding rack and moves axially, and the film on the unwinding rack is rolled up same moved further.
The film volume unreels when getting into next procedure and can produce left and right sides out-of-position phenomenon; Between this unwinding device and next procedure, be provided with position transduser at edge, diaphragm one or both sides, the signal of position transduser inserts the deviation-rectifying system center; The output at deviation-rectifying system center connects the hydraulic-driven facility of oscillating oil cylinder; The current location of the diaphragm edge that this unwinding device is emitted is judged according to the signal of position transduser in the deviation-rectifying system center, sends drive signal according to the diaphragm edge desired location; Oscillating oil cylinder is promoted unwinding rack or pulling to offset direction, realize unreeling diaphragm automatic tracking location.
This unwinding device initiatively unreels function in addition, two unwinding racks respectively have one top, match with the volume core, the volume core by about two top erecting, the top transmission of fixing for axial location of an end is top, and unreels motor and is connected.Transmission is top to have key and the groove that cooperatively interacts with volume core one end, and it is top to unreel the driven by motor transmission, and transmission is top makes it to rotate to transmission of power the volume core, realizes initiatively unreeling.The top of the unwinding rack other end is can be axially movable pneumatic top; Be fixed in the cylinder on the unwinding rack, piston is flexible vertically, piston rod top and pneumatic top joining; During the piston rod withdrawal; The pneumatic top volume core that loosens, piston rod stretches out, and the pressure of cylinder lets pneumatic top volume core and the top core of will rolling up together of transmission of holding out against erect.
In order to let pneumatic top moving steadily, also have slide and slide bar, slide bar to pass on the slide on this side unwinding rack greater than the pilot hole of slide bar diameter, the slide bar end is fishplate bar in succession, and captive joint with connecting panel in pneumatic top outer end.The piston rod of cylinder is connected with connecting panel, and piston rod promotes connecting panel, and connecting panel is given transmission of pressure pneumatic top.Simultaneously, connecting panel pulling slide bar slides in pilot hole.In order to make the slip of slide bar smooth-going, at the two ends of slide pilot hole sliding sleeve is arranged, sliding sleeve and pilot hole are flush fit, and end casing is fixed on sliding sleeve in the pilot hole, and slide bar is through in the sliding sleeve, and the slide bar diameter matches with sliding sleeve.In order to limit the slide bar shift motion, the axial limiting groove is arranged on the slide bar, the banking pin that is fixed in slide is inserted in the position-limited trough.Flexible when cylinder piston rod, slide, position-limited trough and banking pin can not rotate slide bar, can only be in sliding sleeve sway, and banking pin has also been controlled the distance of slide bar displacement through the position-limited trough on the slide bar.
The motor that unreels that said connection transmission is top is a servomotor.Volume footpath sensor is installed on unwinding rack, the signal Access Control center of volume footpath sensor, control center connects servomotor.Volume footpath sensor directly sends signal according to the current volume of film volume; Control center is according to the signal of volume footpath sensor and the membrane tension and the speed of next procedure requirement; Calculate the current motor speed that unreels, output corresponding rotating speeds and dtc signal are delivered to its rotating speed of servomotor control.Thereby realize that automatic guidance unreels speed and membrane tension is constant.
The advantage of the utility model film volume unwinding device is: but 1 automatic capturing makes the diaphragm position stability that gets into subsequent processing, helps guaranteeing the quality of downstream processing; 2, initiatively unreel, but and automatic guidance unreel speed and tension force, guarantee to unreel stable; 3, be applicable to unreeling of diaphragm cylinder materials such as plastic sheeting, paper, cloth, metallic paper; 4, simple in structure, be easy to install and use.
(4) description of drawings
Fig. 1 is this film volume unwinding device embodiment front elevational schematic;
Fig. 2 is this film volume unwinding device embodiment schematic top plan view;
Fig. 3 is this film volume unwinding device embodiment schematic side view.
The figure internal label is: 1, unreel motor, 2, transmission is top, 3, volume core carriage, 4, the film volume, 5, the volume core, 6, pneumatic top; 7, slide bar, 71, end casing, 72, banking pin, 73, slide, 74, connecting panel; 75, sliding sleeve, 8, cylinder, 9, line slideway, 91, slide block, 10, base; 11, unwinding rack, 12, oscillating oil cylinder, 13, guiding roller, 14, position transduser, 15, volume footpath sensor.
(5) specific embodiment
This film volume unwinding device embodiment is shown in Fig. 1 to 3; Left and right 2 unwinding rack 11 bottoms are connected, have down base 10; Have on the base 10 and two parallel line slideways 9 of volume core 5, the fixing slide block 91 that matches with line slideway 9 in each unwinding rack 11 bottom, slide block 91 is embedded on the line slideway 9.Oscillating oil cylinder 12 cylinder barrels are axially, are fixed on the base 10, and its piston rod is connected with unwinding rack 11.The piston rod of oscillating oil cylinder 12 is flexible promptly to be driven unwinding rack 11 and moves axially, and the volume core 5 on the unwinding rack 11 is rolled up 4 same moved further with film.The guiding roller 13 parallel with volume core 5 arranged in the place ahead of unwinding rack 11, and the diaphragm of emitting is delivered to subsequent processing through guiding roller 13.
For the volume core 5 that makes carrier film volume 4 is convenient to operation; Left and right 2 volume core carriages 3 also are installed in the inboard of left and right unwinding rack 11; Volume core carriage 3 is positioned at below, volume core 4 two ends, supports volume core 5 and film volume 4, on can film be rolled up 4 when rolling up and be placed on earlier on the volume core carriage 3; Be rolled into control position, together film rolled up 4 jack-up by transmission top 2, pneumatic top 6.
Before the next procedure, be provided with position transduser 14 in the diaphragm both sides of the edge, the signal of position transduser 14 inserts the deviation-rectifying system center, and the output at deviation-rectifying system center connects the hydraulic-driven facility of oscillating oil cylinder 12.This routine position transduser is the air pressure probe; Upper and lower pressurized air shower nozzle and the air pressure probe that matches of installing respectively at diaphragm edge; Diaphragm edge blocks a part with compressed air channel; The amount of blocking air during its edge sway changes and makes probe send signal, and the position of film edge can be judged according to the signal of air pressure probe in the deviation-rectifying system center, thus the control oscillating oil cylinder.
Left and right unwinding rack 11 tops respectively have one top, volume core 5 by about two top erecting.Right-hand member as shown in Figure 1 top top 2 for the fixing transmission of axial location unreels motor 1 and drives and connect transmission top 2.Transmission top 2 respectively has key and the groove that cooperatively interacts with an end of volume core 5, unreels motor 1 and drives transmission top 2.Be can be axially movable pneumatic top 6 on the unwinding rack 11 of left end, be fixed in the cylinder 8 on the unwinding rack 11, piston be flexible vertically.Above cylinder 8, also have slide 72 and slide bar 7 on this side unwinding rack 11; The pilot hole of axial diameter greater than slide bar arranged on the slide 72, and there is sliding sleeve 75 at two ends in the pilot hole, and sliding sleeve 75 is a flush fit with the pilot hole of slide 72; End casing 71 is fixed in sliding sleeve 75 in the pilot hole respectively; Slide bar 7 passes sliding sleeve 75, and connecting panel 74 links to each other near pneumatic top 6 end with slide bar 7, captives joint with connecting panel 74 in pneumatic top 6 outer end.The piston rod of cylinder 8 is connected with pneumatic top 6 through connecting panel 74.The axial limiting groove is arranged on the slide bar 7, and banking pin 72 fixing on the slide 73 is inserted in the position-limited trough of slide bar 7.
The motor 1 that unreels of said connection transmission top 2 is servomotor.Volume footpath sensor 15 is installed on unwinding rack 11, the signal Access Control center of volume footpath sensor 15, control center with unreel motor and be connected.This routine volume footpath sensor is the correlation photoelectric switch.
The foregoing description is merely concrete example of purpose, technical scheme and beneficial effect further explain to the utility model, and the utility model is not to be defined in this.All any modifications of within the scope of disclosure of the utility model, being made, be equal to replacement, improvement etc., all be included within the protection domain of the utility model.