A kind of film feeding device
The utility model relates to processing film equipment technical field, relates in particular a kind of film feeding device.
In existing processing film technology, when film is reeled, it need to carry out tensioning adjusting while conveying, after the processing such as multiple rollers stretch, carry out rolling, but membraneous material is regulating through too much root roller while stretching, because the tension force at film two ends is inhomogeneous, in the time of operation, just make the film generation problem such as crumple, finally cause rolling end face uneven, crumple, affect crudy.
In order to address this problem, as shown in Figure 1, existing device is generally that a pressure roller 2a is set on backing roll 1a, be pressed against on film 10a by pressure roller 2a, while making film 10a through backing roll 1a, proofread and correct constantly, reduce the problems such as surface folding, but, existing pressure roller 2a and backing roll 1a are all straight rollers, its middle part is due to reasons such as gravity, make its middle part press the pressure of the two ends that are greater than pressure roller to backing roll 1a, therefore the film 10a of its conveying is still because unbalance stress causes certain deformation, thereby affects the last rolling of film 10a.
And it is upper that existing pressure roller 2a is that two ends are hinged on hold-down arm 3a, on the hinged or pipe link 4a of sleeve on bracing frame 20a of hold-down arm 3a, the gravity of pressured roller 2a is naturally pressed against on the film 10a on backing roll 1a and acts on, and its effect is unsatisfactory.
Utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of film feeding device is provided, and it can carry out uniform stressed to film by pressure roller, ensures the quality of film, reduces fold, improves the final rolling quality of film.
The scheme that the utility model solve the technical problem is:
A kind of film feeding device, comprise left socle and right support, one end of backing roll is hinged on left socle, the other end is hinged on right support, on the lateral wall of described left socle and the lateral wall of right support, be all fixed with cylinder, on the push rod of cylinder, be fixed with contiguous block, the two ends of pressure roller are hinged in two contiguous blocks, and pressure roller is close to the film on backing roll, and the middle part of pressure roller has arc convex section;
The two ends of pipe link are fixed in the top of left socle and right support, one end sleeve of two hold-down arms on pipe link, the other end is hinged on the two ends of pressing roller, press roller above pressure roller, it is pressed against on pressure roller.
The bottom of described contiguous block is hinged with standing screw, and standing screw is screwed onto on the top of push rod of cylinder.
On described left socle and right support, be also provided with idler roller, two tensioning cylinders are separately fixed on left socle and right support, and the push rod of two tensioning cylinders is hinged on respectively the two ends of idler roller.
Described idler roller is higher than backing roll.
Outstanding effect of the present utility model is:
Compared with prior art, it can carry out uniform stressed to film by pressure roller, ensures the quality of film, reduces fold, improves the final rolling quality of film.
Meanwhile, it adopts cylinder to regulate pressure roller, and by pressing the distortion of further pressing minimizing pressure roller of roller, improves pressure roller more even to pressing of film, reduces fold.
Simultaneously, the bottom of its contiguous block is hinged with standing screw, standing screw is screwed onto on the top of push rod of cylinder, can further regulate the distance between pressure roller and backing roll like this by the distance that regulates standing screw to be screwed onto the push rod of cylinder, further improves precision.
Brief description of the drawings:
Fig. 1 is the structural representation of original feedway;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is part sectional view of the present utility model;
Fig. 4 is the structural representation between cylinder of the present utility model and contiguous block;
Fig. 5 is the local structure schematic diagram of pressure roller;
Fig. 6 is the lateral plan of contiguous block.
Detailed description of the invention:
Embodiment, see shown in Fig. 2 to Fig. 6, a kind of film feeding device, comprise left socle 1 and right support 2, one end of backing roll 3 is hinged on left socle 1, the other end is hinged on right support 2, on the lateral wall of the lateral wall of described left socle 1 and right support 2, is all fixed with cylinder 4, on the push rod of cylinder 4, be fixed with contiguous block 5, the two ends of pressure roller 6 are hinged in two contiguous blocks 5, and pressure roller 6 is close to the film 10 on backing roll 3, and the middle part of pressure roller 6 has arc convex section 61;
The two ends of pipe link 7 are fixed in the top of left socle 1 and right support 2, one end sleeve of two hold-down arms 8 on pipe link 7, the other end is hinged on the two ends of pressing roller 9, press roller 9 above pressure roller 6, it is pressed against on pressure roller 6.
The bottom of described contiguous block 5 is hinged with standing screw 51, and standing screw 51 is screwed onto on the top of push rod of cylinder 4.The upper end of standing screw 51 forms straight-bar, in the shrinkage pool that the bottom of contiguous block 5 forms, be fixed with bearing, end cap is bolted to connection on the bottom face of contiguous block 5, the upper lobes circle sleeve of end cap is in shrinkage pool and be pressed against on the cycle surface of bearing, and straight-bar is through the central through hole of end cap and in the inner ring of bearing, carry out hinged by interference fit holding.
On described left socle 1 and right support 2, be also provided with 20, two tensioning cylinders 30 of idler roller and be separately fixed on left socle 1 and right support 2, the push rod of two tensioning cylinders 30 is hinged on respectively the two ends of idler roller 20.
The level attitude of described idler roller 20 is higher than backing roll 3.Pressure roller 6 is quality of rubber materials with the outer wall that presses roller 9.
Principle of work: can pull pressure roller 6 significantly to regulate by the push rod of cylinder 4, then by rotating standing screw 51, contiguous block 5 is finely tuned up and down, thereby further regulate the spacing between pressure roller 6 and backing roll 3, thereby thereby can being better pressed against, pressure roller 6 on film 10, makes the uniform stressed of pressure roller 6 to film 10, quality when raising film 10 moves, reduces the appearance of fold.
Meanwhile, the middle part of its pressure roller 6 has arc convex section 61, makes so stressed more even.
Can ensure that pressure roller 6 is more stressed even in the time rotating and press roller 9.
And he carries out sway by the push rod promotion idler roller 20 of tensioning cylinder 30, thereby regulate the degree of tension of idler roller 30 to film 10, thereby meet the degree of tension requirement of film 10.Thereby improve the last coiling effect of film 10.