A kind of film cutting apparatus that is used on the packing machine
Technical field
The utility model relates to the film cutting apparatus that is used on the packing machine.
Background technology
Packing machine on object, forms packaging body in order to next procedure thermal contractible plastic film with plastic film sleeve.Be transported to the assigned address of packing machine when object after, will plastic film be cut off from the film volume, scald sticking otch then with cutting knife.After permanent the use, the surface of the surface of cutting knife and metal cutter hub can be stained with a lot of plastics slags, thus influence metal cutter hub and cutting knife cut film quality and effect.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of film cutting apparatus that is used on the packing machine, can keep cutting membrane knife to scald mucous membrane with cutting film and steel edge height quality lastingly in high quality.For this reason, the utility model by the following technical solutions; It comprises liftable metal cutter hub and is contained in cutting membrane knife in the metal cutter hub that be provided with electrical heating elements in the described metal cutter hub, the surface of described cutting membrane knife and metal cutter hub has teflon coating.Owing to adopt the technical solution of the utility model, can avoid of bonding and the accumulation of plastics slag as much as possible in cutting membrane knife and steel edge surface, improve the operating cycles of cutting film quality and prolonging cutting membrane knife and metal cutter hub of cutting membrane knife and metal cutter hub.
When adopting technique scheme, further technical scheme below the utility model also can adopt or make up and adopt:
Described metal cutter hub connects synthetic by two knife rest halfbodies and forms the mounting groove of electrical heating elements and the mounting groove of cutting membrane knife at interface, and the blade of cutting membrane knife slightly exposes the mounting groove of cutting membrane knife, and the lower surface of metal cutter hub forms the sticking face that scalds.
Described metal cutter hub is lifted on by cylinder and drives on the crane of lifting, described steel edge external be provided with have a louvre protect the cutter cover.
The below of described cutting membrane knife is provided with the silica gel backing plate.
Description of drawings
Fig. 1 is the scheme drawing of embodiment that the utility model provides.
Fig. 2 be embodiment illustrated in fig. 1 in, protect the exploded view of cutter cover, metal cutter hub, cutting membrane knife part.
Fig. 3 is the cross-sectional figure of cutting membrane knife.
The specific embodiment
With reference to accompanying drawing.The utility model comprises liftable metal cutter hub 1 and is contained in cutting membrane knife 2 in the metal cutter hub that be provided with electrical heating elements in the described metal cutter hub, the surface of described cutting membrane knife and metal cutter hub has teflon coating 3.
Described metal cutter hub connects synthetic by two knife rest halfbodies, 11,12 usefulness screws and forms the mounting groove 41 of electrical heating elements and the mounting groove 42 of cutting membrane knife at interface; the lower surface of metal cutter hub forms the sticking face 13 that scalds; the blade of cutting membrane knife slightly exposes mounting groove 42; also promptly only need to satisfy the usefulness of cutting film; the remainder of cutting membrane knife all tries not to expose mounting groove 42, to help to scald the cement amount and to the protection of cutting membrane knife.Only show the mounting groove 41 of described electrical heating elements in the accompanying drawings, and conceal electrical heating elements.
Described metal cutter hub is lifted on by cylinder 5 and drives on the crane 6 of lifting, drawing reference numeral 7 is for hanging the bolt that connects usefulness, drawing reference numeral 8 is and bolted metal cutter hub Lift hook, and linear axis bearing 61 is installed at the two ends of crane, and linear axis bearing 61 is enclosed within on the guide rod 62 and can slides up and down.Described steel edge is external be provided with have a louvre 91 protect cutter cover 9.Drawing reference numeral 14 be on the cutter hub with Lift hook 8 bonded assembly grooves.
The below of described cutting membrane knife is provided with silica gel backing plate 10.
During work, after object moved to assigned address, film was placed on the object automatically, and cutting membrane knife descends with the metal cutter hub subsequently, and tightly press mold is on the silica gel backing plate, and cutting membrane knife cuts off film, and the metal cutter hub scalds the mucous membrane otch, and object is admitted in the thermal contraction machine afterwards.