Automatic film feeder
Technical field
The utility model relates to a kind of automatic film feeder.
Background technology
In the automotive upholstery production process, need to use a kind of film to cover automotive upholstery, prevent that dust from dropping on the interior trimming parts, influences product quality.Untapped film all is to twist on the spool, trail in use, and the length of using as required cuts.When film stretched, the length of stretching, extension length was as required determined.As the length that the stretches length greater than needs, too much film stack is intertwined together easily, causes work to proceed.
The utility model content
The purpose of this utility model is in order to overcome deficiency of the prior art, a kind of automatic film feeder of length extending film as required to be provided.
For realizing above purpose, the utility model is achieved through the following technical solutions:
Automatically film feeder is characterized in that comprise pedestal, pedestal is provided with two pack supports, and every pack support top is equipped with a rotating axle drive shaft, and each axle drive shaft is connected with the output shaft of a motor; Also comprise runner, runner is installed in rotation on the pedestal, along the circumferential direction is provided with first test rod and second test rod on the runner; On the path circumscribed of first test rod and second test rod, be respectively arranged with a motor rotation of a may command near switch.
Preferably, described pedestal is a casing, runner and all be arranged in the casing near switch, casing is provided with opening, one end of at least one in first test rod and second test rod has at least one to be positioned on the moving line that stretches out the first outer test rod of casing or second test rod near switch outside opening part stretches out casing.
Preferably, described first test rod, one end or second test rod, one end that stretches out outside the casing is the coupler body shape.
Preferably, also comprise driving governor, driving governor is electrically connected with motor with near switch.
Preferably, the described first test rod weight is greater than the weight of second test rod.
Preferably, second test rod is positioned on the route that film drops, and the described first test rod weight is greater than the weight of second test rod, less than the second test rod weight and the weight sum that drops on the film on second test rod.
Preferably, second test rod is positioned on the route that film drops, homonymy at first test rod, be provided with balance block, the described first test rod weight and balance piece weight sum is greater than the weight of second test rod, less than the second test rod weight and the weight sum that drops on the film on second test rod.
Automatic film feeder in the utility model, but the spread length of automatic guidance film are determined its length according to the needs that use, and can prevent to be intertwined after too much film from stretching, and can guarantee carrying out smoothly of work.Easy to use.
Description of drawings
Fig. 1 is the utility model birds-eye view.
Fig. 2 is the A-A cutaway view among Fig. 1, has increased film among Fig. 2.
Fig. 3 has increased film for the A-A cutaway view of the utility model Fig. 1 in the use among Fig. 3.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail:
As shown in Figure 1 and Figure 2, film feeder comprises box-type pedestal 1 automatically, and pedestal 1 is provided with opening 11.
Pedestal 1 is provided with two pack supports (2,3).Two supports 2 are one group, are oppositely arranged, and two support 2 tops are equipped with axle drive shaft 4 of a rotating axle drive shaft 4, two supports, 2 together support.Axle drive shaft 4 is connected with the output shaft (not shown) of a motor.Two supports 3 are one group, are oppositely arranged, and two support 3 tops are equipped with axle drive shaft 5 of a rotating axle drive shaft 5, two supports, 3 together support.Axle drive shaft 5 is connected with the output shaft (not shown) of a motor.
Be provided with runner 7 in the pedestal 1, runner 7 is installed in rotation in the pedestal 1 by axle 8.Along the circumferential direction be provided with first test rod 71 and second test rod 72 on the runner 7.Second test rod, 72 ends are coupler body, and second test rod, 72 coupler body ends stretch out outside the pedestal from the opening 11 of pedestal 1.First test rod 71 and second test rod 72 can rotate with runner 7.
Be provided with two in the pedestal 1 near switch (8,9).Be arranged near switch 8 on the path circumscribed of first test rod 71.Be arranged near switch 9 on the path circumscribed of second test rod 72.
Also comprise the driving governor (not shown), driving governor and motor and be electrically connected near switch (8,9).
In the utility model, the weight of first test rod 71 is set to the weight greater than second test rod 72.When film was pressed on second test rod 72, the weight sum of second test rod 72 and film was greater than the weight of first test rod 71.Like this, when film is pressed on second test rod 72, can makes second test rod 72 drive runner 7 and clockwise rotate.When film is pulled up, when film does not contact with second test rod 72, can utilize the design of the weight of first test rod 71 greater than the weight of second test rod 72, first test rod, 71 drive runners 7 rotate counterclockwise and return back to the position of arriving that can detect near switch 8.
A form that can change of the present utility model is that the homonymy of first test rod 72 increases a balance block (not shown) on runner 7.The weight sum of utilizing first test rod 71 and balance block is greater than the weight of second test rod 72 but less than the weight sum of second test rod 72 with film, the rotation of control runner 7.
During use, driving governor is according to the running near two motors of signal control of switch (8,9) that receives.Axle drive shaft 4 is rotated by a motor-driven, film can be trailed, and with the increase of film spread length, film falls towards pedestal 1.As shown in Figure 2, when film 10 spread lengths were longer, film 10 was pressed against on second test rod 72, made second test rod 72 clockwise rotate.Second test rod 72 clockwise rotates the back and contacts near switch 9, gives electric signal of driving governor near switch 9.Driving governor makes by motor axle drive shaft 4 is stopped operating, and by a motor axle drive shaft 5 is rotated 3 seconds.After axle drive shaft 5 rotates, the film 10 between axle drive shaft 4 and the axle drive shaft 5 can be delivered to the use location.Film 10 length between axle drive shaft 4 and axle drive shaft 5 shorten, and eliminate the pressure to second test rod 72, and runner 7 rotates counterclockwise.As shown in Figure 3, after runner 7 rotated counterclockwise, 71 contacts of first test rod were given electric signal of driving governor near switch 8 near switch 8, and driving governor control motor stops operating axle drive shaft 5, and by a motor axle drive shaft 4 is rotated 3 seconds.With this, film 10 length between axle drive shaft 4 and axle drive shaft 5 increase, and rotate the back and contact near switch 9 until film 10 compressings second test rod 72.For avoiding film 10 length between axle drive shaft 4 and axle drive shaft 5 long, when runner 7 was positioned at position shown in Figure 2 above 7 seconds, all motors of driver control shut down.
Embodiment in the utility model only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in the utility model protection domain.