Cutting knife sealing strip assembly

Abstract

The utility model discloses a cut-off knife sealing strip assembly which comprises a front side unwinding cut-off knife and a rear side unwinding cut-off knife, a plurality of sections of sealing strips are arranged between the front side unwinding cut-off knife and the rear side unwinding cut-off knife, and the sealing strips are made of tetrafluoroethylene. One end of the sealing strip is provided with at least one notch, and the other end of the sealing strip is provided with a raised head matched with the notch; the multiple sections of sealing strips are detachably connected in the mode that the protruding heads are embedded into the notches, and only one sealing strip is replaced when the sealing strips are locally damaged. According to the utility model, the sealing strip is made of tetrafluoroethylene, so that the sealing strip is good in lubricating effect, wear-resistant and long in service life; and a single piece can be replaced when partial damage is caused due to segmented design, the intact piece can be continuously used, the cost is saved, and replacement is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing strips, in particular to a cutter sealing strip assembly. Background Art

[0002] During the forward unwinding and reverse unwinding of the film roll, a cutting knife is usually provided on the cutting frame to respectively complete the cutting work of the corresponding forward unwinding or reverse unwinding film roll. The cutting assembly is usually provided with a front unwinding cutting knife and a rear unwinding cutting knife.

[0003] Some of the existing front unwinding cutters and rear unwinding cutters are not provided with a sealing strip, while others are only provided with a wooden sealing strip of the same shape as the cutter. This design method has poor lubrication effect, poor wear resistance and short service life of the sealing strip. On the other hand, when the sealing strip is partially damaged, the entire strip needs to be replaced, and the partially intact part cannot be used continuously, which is not only troublesome to replace but also costly. Utility Model Content

[0004] The main purpose of the utility model is to provide a cutter sealing strip assembly, aiming to solve the technical problems of poor wear resistance, high replacement cost and trouble of the sealing strip in the prior art.

[0005] To achieve the above purpose, the utility model provides a cutter sealing strip assembly, including a front unwinding cutter and a rear unwinding cutter, wherein a plurality of sealing strips are arranged between the front unwinding cutter and the rear unwinding cutter, and the sealing strips are made of tetrafluoroethylene;

[0006] The sealing strip is provided with at least one notch at one end and a convex head adapted to the notch at the other end;

[0007] Several sections of the sealing strips are detachably connected by embedding the protrusions into the recesses, so that only a single strip can be replaced when it is partially damaged.

[0008] Furthermore, the sealing strip is provided with at least one large waist hole and a small waist hole adapted to the front unwinding and cutting knife and the rear unwinding and cutting knife.

[0009] Furthermore, hole edges are arranged transversely on both sides of the large waist hole and the small waist hole on the front side of the sealing strip, and the hole edges are annular.

[0010] Furthermore, the thickness L of the sealing strip hole is 3 mm to 5 mm; the hole edge is 0.2 mm to 0.4 mm higher than the hole.

[0011] Furthermore, the front unwinding and cutting blade is one piece, and the rear unwinding and cutting blade is two pieces.

[0012] The beneficial effects of the utility model are embodied in:

[0013] In the utility model, the sealing strip is made of tetrafluoroethylene, which has good lubrication effect, wear resistance and long service life; the segmented design allows only a single strip to be replaced when partly damaged, and the intact strip can be used continuously, which not only saves costs but also facilitates replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of the three-dimensional structure of the components of the utility model;

[0015] Figure 2 This is a schematic diagram of the component disconnection structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing strip of the utility model;

[0017] Figure 4 for Figure 3 Center front view;

[0018] Figure 5 for Figure 4 Full section view along the A axis.

[0019] Description of reference numerals:

[0020] 1. Front side unwinding and cutting knife, 2. Back side unwinding and cutting knife, 3. Sealing strip, 4. Large waist hole, 5. Small waist hole, 6. Hole edge, 7. Notch, 8. Protruding head. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that satisfy both A and B. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0024] See also Figures 1 to 5 The utility model cutter sealing strip assembly comprises a front unwinding cutter 1 and a rear unwinding cutter 2, wherein a plurality of sealing strips 3 are arranged between the front unwinding cutter 1 and the rear unwinding cutter 2, and the sealing strips 3 are made of tetrafluoroethylene;

[0025] The sealing strip 3 is provided with at least one notch 7 at one end and a convex head 8 adapted to the notch 7 at the other end;

[0026] Several sections of the sealing strips 3 are detachably connected by inserting the protrusions 8 into the recesses 7, so that only a single strip can be replaced when it is partially damaged.

[0027] How it works

[0028] The sealing strip is designed in sections and has a convex head and a concave groove at the end. The convex head and the concave groove are installed together. When the sealing strip is partially damaged, the damaged single sealing strip can be replaced, and the remaining intact sealing strips can continue to be used, which is not only convenient for replacement but also saves costs;

[0029] The sealing strip is made of tetrafluoroethylene, which not only has good lubrication effect, but also is wear-resistant and has a long service life.

[0030] In some embodiments, see Figure 1 and 2 As shown in Figures 4 and 5, the sealing strip 3 is provided with at least one large waist hole 4 and a small waist hole 5 adapted to the front unwinding cutter 1 and the rear unwinding cutter 2. The small waist hole is used for installing the sealing strip, and is set as a waist hole for easy installation to avoid the sealing strip from being unable to be installed due to inaccurate size caused by processing errors. The large waist hole is used to limit the displacement of the sealing strip during sliding.

[0031] In some embodiments, see Figure 1 and 3As shown in FIG4 , the sealing strip 3 has a hole edge 6 disposed transversely on both sides of the large waist hole 4 and the small waist hole 5 on the front side, and the hole edge 6 is annular. The hole edge is provided to facilitate heat dissipation.

[0032] In some embodiments, see Figure 3 and 5 As shown, the thickness L of the hole position of the sealing strip 3 is 3 mm to 5 mm; the hole edge 6 is 0.2 mm to 0.4 mm higher than the hole position.

[0033] In some embodiments, see Figure 1 As shown, the front unwinding and cutting blade 1 is one piece, and the rear unwinding and cutting blade 2 is two pieces.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting knife sealing strip assembly, comprising a front unwinding cutting knife (1) and a rear unwinding cutting knife (2), characterized in that A plurality of sealing strips (3) are provided between the front unwinding cutter (1) and the rear unwinding cutter (2), and the sealing strips (3) are made of tetrafluoroethylene; The sealing strip (3) is provided with at least one notch (7) at one end and a convex head (8) adapted to the notch (7) at the other end; Several sections of the sealing strips (3) are detachably connected by inserting the protrusions (8) into the recesses (7), so that only a single strip can be replaced when it is partially damaged.

2. The cutter sealing strip assembly according to claim 1, characterized in that: The sealing strip (3) is provided with at least one large waist hole (4) and a small waist hole (5) adapted to the front unwinding cutter (1) and the rear unwinding cutter (2).

3. The cutter sealing strip assembly according to claim 1, characterized in that: The large waist hole (4) and the small waist hole (5) on the front side of the sealing strip (3) are provided with hole edges (6) in a circular shape in the transverse direction on both sides.

4. The cutter sealing strip assembly according to claim 3, characterized in that: The hole thickness L of the sealing strip (3) is 3 mm to 5 mm; the hole edge (6) is 0.2 mm to 0.4 mm higher than the hole.

5. The cutter sealing strip assembly according to claim 1, characterized in that: The front unwinding cutting knife (1) is one piece, and the rear unwinding cutting knife (2) is two pieces.

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