Film cutting device for film material belt

Abstract

The utility model discloses a film cutting device for a film material belt, which comprises a fixed cutting die and a movable cutting die, the fixed cutting die is provided with a cutting groove with a preset shape, and the movable cutting die is matched with the cutting groove in shape; a first cutting edge is arranged on the inner circumferential wall, located in the cutting groove, of the fixed cutting die, and a second cutting edge matched with the first cutting edge is arranged on the outer circumferential wall of the movable cutting die. The first cutting edge and / or the second cutting edge are / is provided with an avoiding position, and the avoiding position enables the first cutting edge and the second cutting edge not to make contact with each other in the mold closing process. A film material belt penetrates through the position between the fixed cutting die and the movable cutting die, the movable cutting die moves towards the fixed cutting die, the first cutting edge and the second cutting edge are tangent, so that a thin sheet matched with a product in shape is cut, the first cutting edge and the second cutting edge are not in contact with each other through the arrangement of the receding position, and then the thin sheet is still connected with the film material belt. Then hot pressing or fixing is carried out until the product is moved to the position above the product; the fixed cutting die and the movable cutting die which are independently arranged are easier to clean or polish, so that the cutting edge is kept sharp.

Description

Technical Field

[0001] The utility model relates to the field of bottle cap film material cutting equipment, in particular to a film material strip cutting device. Background Art

[0002] In the existing bottle cap sheet die strip film cutting generally adopts a punching and heating integrated method or a rolling cutting method or a die cutting method.

[0003] The integrated die-cutting and heating method can be referred to in Chinese patent CN201520024823.8, which adopts an integrated die-cutting and heating method. It requires the film cutting device and the heating device to be integrated, so the structure is relatively complicated.

[0004] Among them, the rolling cutting method uses two mutually rotating cutters to cut the same position of the thin film, thereby realizing the thin film forming of the corresponding shape. Although it brings faster production efficiency, it wears out quickly, is inconvenient to maintain, and has a high long-term use cost.

[0005] Among them, the die-cutting method uses a movable knife (laser die) and a fixed knife to die-cut the same position of the sheet, thereby realizing the forming of the sheet of the corresponding shape. Although it brings faster production efficiency, it wears out quickly and the long-term use cost is very high.

[0006] All three film cutting methods have the following problems: 1. The cost of equipment parts is high; 2. The knife die is easy to wear, and once the rolling cutting knife die is replaced, the entire equipment needs to be disassembled and maintained, which takes a long time. Utility Model Content

[0007] The main purpose of the utility model is to propose a film cutting device for film strips, aiming to achieve pre-cutting of film strips, thereby improving film cutting efficiency while reducing tool wear, and facilitating maintenance of the knife die; at the same time, reducing the cost of equipment parts and improving market competitiveness.

[0008] To achieve the above-mentioned purpose, the utility model provides a film cutting device for a film strip, comprising a fixed knife die and a movable knife die, wherein the fixed knife die is provided with a cutting groove of a predetermined shape, and the movable knife die is adapted to the shape of the cutting groove;

[0009] The inner peripheral wall of the fixed die is provided with a first cutting edge at the cutting groove, and the outer peripheral wall of the movable die is provided with a second cutting edge matching with the first cutting edge;

[0010] The first cutting edge and / or the second cutting edge is provided with an avoidance position, and the avoidance position prevents the first cutting edge and the second cutting edge from partially contacting each other when the mold is closed.

[0011] In the actual design of the technical solution of the utility model, the film material belt passes between the fixed knife die and the movable knife die, and the movable knife die moves toward the fixed knife die, and the first cutting edge and the second cutting edge are tangent to each other to cut out a thin sheet suitable for the shape of the product. At the same time, the first cutting edge and the second cutting edge are not in contact with each other by setting the avoidance position, so that the thin sheet is still connected to the mold material belt until it moves to the upper position of the product and then is hot pressed or fixed;

[0012] The use of a separate die cutting device can make the overall height of the film laminating mechanism smaller, reduce the height of the equipment, and facilitate the transportation and assembly of the equipment; and the separately arranged fixed knife die and movable knife die are easier to clean or polish, and can be directly sharpened manually to avoid disassembly. Of course, in order to ensure its processing convenience, the fixed knife die and movable knife die can also be designed as a detachable structure;

[0013] Compared with the overall equipment, the film punching method and the separate heating setting can save the electricity cost of one heating, such as comparing other laminating methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 Indication for the moving die Figure 1 ;

[0016] Figure 3 Indication for the moving die Figure 2 .

[0017] In the figure, 11 is a fixed cutter die, 111 is a cutting groove, 12 is a movable cutter die, 121 is a limiting groove, 21 is a first cutting edge, 22 is a second cutting edge, 31 is a first notch, and 32 is a second notch. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings 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. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "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 the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0021] like Figures 1 to 3 As shown, a film cutting device for a film strip comprises a fixed knife die 11 and a movable knife die 12, wherein the fixed knife die 11 is provided with a cutting groove of a predetermined shape, and the movable knife die 12 is adapted to the shape of the cutting groove;

[0022] The inner peripheral wall of the fixed die 11 located at the cutting groove is provided with a first cutting edge 21, and the outer peripheral wall of the movable die 12 is provided with a second cutting edge 22 matched with the first cutting edge 21;

[0023] The first cutting edge 21 and / or the second cutting edge 22 is provided with an avoidance position, and the avoidance position prevents the first cutting edge 21 and the second cutting edge 22 from partially contacting each other when the mold is closed.

[0024] In the actual design, the film strip passes between the fixed knife die 11 and the movable knife die 12, and the movable knife die 12 moves toward the fixed knife die 11, and the first cutting edge 21 and the second cutting edge 22 are tangent to each other to cut out a thin sheet suitable for the shape of the product. At the same time, the first cutting edge 21 and the second cutting edge 22 are partially not in contact with each other by setting the avoidance position, so that the thin sheet is still connected to the mold strip until it moves to the upper position of the product and then hot pressed or fixed;

[0025] The use of a separate die cutting device can make the overall height of the film laminating mechanism smaller, reduce the height of the equipment, and facilitate the transportation and assembly of the equipment; and the separately arranged fixed knife die 11 and movable knife die 12 are easier to clean or polish, and can be directly sharpened manually to avoid disassembly. Of course, in order to ensure its processing convenience, the fixed knife die 11 and the movable knife die 12 can also be designed as a detachable structure;

[0026] Compared with the overall equipment, the separate setting of molding and heating can save the electricity cost of one-time heating, such as adopting other bonding methods.

[0027] Specifically, the avoidance position is a first notch 31 provided on the inner peripheral wall of the first cutting edge 21 .

[0028] More specifically, the avoidance position is a second notch 32 provided on the outer peripheral wall of the second cutting edge 22 .

[0029] That is, the first cutting edge 21 alone may be provided with an avoidance position, the second cutting edge 22 alone may be provided with an avoidance position, or both the first cutting edge 21 and the second cutting edge 22 may be provided with avoidance positions, and the above-mentioned technical purpose may be achieved.

[0030] In the embodiment of the utility model, the avoidance position is a notch, and the notches are distributed at intervals or irregularly along the axis. When the sheet is of a regular shape, it is preferably distributed regularly, so that the sheet can still be connected to the mold material belt, thereby achieving stable movement of the material belt;

[0031] When the sheet is of irregular shape, it can be arranged according to the stability of the connection between the sheet and the mold material belt;

[0032] The notch is preferably arranged so that the sheet does not fold or fall off during movement;

[0033] Of course, the gaps can also be distributed in points, blocks or lines, and can be set according to actual needs.

[0034] In an embodiment of the utility model, the notch is set through along the height direction of the movable knife die 12 or the fixed knife die 11. It is preferred to set the notch through so as to facilitate material discharge when cutting waste. Of course, the notch is not set as a through groove and can also achieve the above-mentioned effect of connecting the thin sheet and the mold material belt.

[0035] Specifically, the movable die 12 is a columnar structure.

[0036] More specifically, the movable die 12 has a non-circular structure, which facilitates the positioning of the movable die 12, avoids displacement, and improves stamping accuracy; in an actual design, when the movable die 12 is provided with a protrusion, the corresponding fixed die 11 is also provided with a groove matching the protrusion.

[0037] In the embodiment of the present utility model, the movable knife mold 12 is a hollow cylinder or a non-hollow cylinder.

[0038] Specifically, a transversely recessed limiting groove 121 is provided in the middle of the movable cutting die 12 so that the movable cutting die 12 can be accurately mounted on the positioning plate or positioning structure to reduce cutting errors.

[0039] The number of the workstations is 1 to n.

[0040] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A film cutting device for a film strip, characterized in that: It comprises a fixed die and a movable die, wherein the fixed die is provided with a cutting groove of a predetermined shape, and the movable die is adapted to the shape of the cutting groove; The inner peripheral wall of the fixed die is provided with a first cutting edge at the cutting groove, and the outer peripheral wall of the movable die is provided with a second cutting edge matching with the first cutting edge; The first cutting edge and / or the second cutting edge is provided with an avoidance position, and the avoidance position prevents the first cutting edge and the second cutting edge from partially contacting each other when the mold is closed.

2. The film cutting device for film strip according to claim 1, characterized in that: The avoidance position is a first notch arranged on the inner peripheral wall of the first cutting edge.

3. The film cutting device for film strip according to claim 1, characterized in that: The avoidance position is a second notch arranged on the outer peripheral wall of the second cutting edge.

4. The film cutting device for film strip according to claim 1, characterized in that: The avoidance position is a notch, and a plurality of the notches are provided and are distributed at intervals or irregularly along the axis.

5. The film cutting device of the film strip according to claim 4, characterized in that: The notch is arranged to penetrate or not penetrate along the height direction of the movable knife die or the fixed knife die.

6. The film cutting device for film strip according to claim 1, characterized in that: The movable knife die is in a columnar structure.

7. The film cutting device of the film strip according to claim 6, characterized in that: The movable knife die is in a circular or non-circular structure.

8. The film cutting device of the film strip according to claim 6, characterized in that: The movable knife die is a hollow cylinder or a non-hollow cylinder.

9. The film cutting device of the film strip according to claim 6, characterized in that: The movable knife die and the fixed knife die form one workstation, and the number of the workstations ranges from 1 workstation to n workstations.

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