A switchable blade type film cutting device and film cutting equipment

Abstract

The present invention discloses a switchable blade film cutting device and film cutting equipment, wherein the switchable blade film cutting device comprises: a mounting frame, a blade box for storing blades and a blade switching assembly for switching blades; the blade box is elastically connected to the mounting frame; the blade switching assembly is fixedly connected to the blade box; the blade switching assembly comprises a support, a rotating assembly and at least two sliding assemblies; the sliding assembly is interspersed in the support, the rotating assembly is arranged on the support through a rotating shaft and contacts the sliding assembly; rotating the rotating assembly can realize pushing or retracting the sliding assembly, thereby pushing out the blade in the blade box or retracting the blade. The present invention can realize rapid switching of blades through the setting of the blade switching assembly, without the need for disassembly and assembly, and can enable the same film cutting device to cut different films, which is convenient to operate.

Description

Technical Field

[0001] The invention belongs to the field of film cutting and relates to a switchable blade type film cutting device and film cutting equipment. Background Art

[0002] At present, in mechanical production and agricultural production, products are often required to be protected by film or sealed with adhesive film. However, the purchased film material is often a wider roll, which needs to be cut into a suitable length for use. Existing film cutting machines can usually only be installed with one type of blade. When cutting films of different materials, the blade needs to be disassembled and replaced, which is a cumbersome process. Usually, during use, the blade is also fixed, which causes inconvenience in replacing the film material. When not in use, the blade will be exposed outside, which poses a safety hazard and cannot be well protected.

[0003] The Chinese patent, application number 201120538182.X, discloses a cutting device for cutting plastic film, the main components of which include a fixing frame, a cutting saw tooth mounting plate, cutting saw teeth and a ruler; the two ends of the cutting saw tooth fixing frame are respectively fixed on two mutually parallel fixing frames; the ruler is arranged on one side of a fixing frame; the cutting saw teeth are fixed on the cutting saw tooth fixing frame; an opening slot is arranged on the fixing frame for placing a rotating shaft, the rotating shaft is parallel to the cutting saw tooth fixing frame; a limit nut is arranged on the rotating shaft to prevent the rotating shaft from axially moving in the opening slot; baffles are arranged at both ends of the rotating shaft to prevent the roll-type plastic film from axially moving. During use, the length of the film is measured and cut.

[0004] The above patent has the problem of inconvenience in replacing the blade and there are potential safety hazards. Summary of the invention

[0005] The object of the present invention is to provide a film cutting device which is convenient for switching blades in view of the deficiencies of the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A switchable blade film cutting device comprises a mounting frame, a blade box for placing blades and a blade switching assembly; the blade box is elastically connected to the mounting frame; the blade box contains at least two blades; the blade switching assembly is connected to the blade box;

[0008] The blade switching assembly includes a support, a rotating assembly and at least two sliding assemblies; the support is provided with a rotating shaft; the rotating assembly can be rotatably mounted on the rotating shaft; the sliding assembly can be slidably installed on the support; one end of the sliding assembly is connected to the blade, and the other end is in contact with the rotating assembly.

[0009] Furthermore, the support member includes a first panel, a second panel and a first connecting rod connecting the first panel and the second panel; the first panel and the second panel are provided with at least two groups of corresponding through holes around the first connecting rod for installing the sliding assembly.

[0010] Furthermore, the sliding assembly includes a sliding rod and an elastic member; a portion of the sliding rod located between the first panel and the second panel is provided with a limiting plate; and the elastic member is provided between the limiting plate and the second panel.

[0011] Furthermore, the rotating assembly includes a third panel and a flange; the flange is fixed to the lower surface of the third panel.

[0012] Furthermore, the knife box is in the shape of a triangular prism, with an opening on one edge and a pair of bilaterally symmetrical through holes on the surface opposite to the opening; the sliding rod passes through a through hole into the knife box and is connected to a blade.

[0013] Furthermore, the mounting frame includes two side plates, a base and a support rod; the support rod is installed on the base; the two side plates are respectively fixed to the two ends of the support rod; and the base is L-shaped.

[0014] Furthermore, the side panel is provided with a connecting column at one end close to the fixed end, and a film roll buckle at the other end; a third elastic member is provided on the inner side of the side panel, one end of the third elastic member is connected to the connecting column, and the other end passes through the bottom of the film roll buckle to be connected to the knife box, so that the knife box can be close to or away from the film roll buckle.

[0015] Furthermore, the third elastic member is in a stretched state.

[0016] Furthermore, the blade switching assembly is provided with two groups, which are respectively fixed at two ends of the blade box and correspond to the sixth through hole.

[0017] Furthermore, a switchable blade type film cutting device comprises any one of the switchable blade type film cutting devices described above.

[0018] Working principle of the present invention:

[0019] The axis of the film roll material is clamped in the film roll buckle, and the knife box is tightly attached to the film roll buckle under the action of the third elastic member; the rotating component is rotated to move the protruding part of the flange to the top of a sliding rod, and the sliding rod is pushed out under the pushing action of the flange, thereby pushing a blade to be exposed from the opening of the knife box. After a certain length of film is pulled out, the film is allowed to contact the blade, and the film is pulled toward the back of the knife, and the film will be easily cut; the rotating component is rotated to move the protruding part of the flange away from the original sliding rod to another sliding rod, and the original sliding rod is reset under the action of the elastic member, the original blade is retracted, and the other blade is exposed from the opening of the knife box to achieve the switching of the blades; when not in use, only the protruding part of the flange is moved away from the sliding rod to reset the sliding rod, and the blade is completely retracted into the knife box; during the film cutting process, the third elastic member can keep the knife box close to the film roll buckle; when replacing the film roll, only the knife box is pulled to a position away from the film roll buckle, and it is clamped and fixed, and the film roll can be replaced. After the replacement is completed, the knife box is released to reset it.

[0020] Beneficial effects of the present invention:

[0021] The present invention rotates the rotating component to push the flange out of the sliding component, thereby pushing the corresponding blade out of the blade box; different blades can be pushed out when cutting different films. When not in use, the flange is moved away from the sliding component, the sliding component is reset under the action of the elastic member, and the blade is retracted into the blade box, thereby achieving the purpose of blade switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 It is a structural stereogram of a switchable blade type film cutting device;

[0023] Attached Figure 2 is a cross-sectional schematic diagram of a blade switching assembly of a switchable blade type film cutting device;

[0024] Attached Figure 3 is a cross-sectional schematic diagram of a blade switching assembly of a switchable blade type film cutting device in Example 2;

[0025] Attached Figure 4 is a schematic diagram of the cooperation between the rotating assembly and the rotating shaft of the switchable blade type film cutting device in Example 3;

[0026] Attached Figure 5 is a top view of a blade switching assembly in a switchable blade type film cutting device;

[0027] Attached Figure 6 Schematic diagram of the side panel in the switchable blade film cutting device.

[0028] Markings in the figure: 101-base, 102-support rod, 103-side plate, 104-connecting column, 105-third elastic member, 106-film roll buckle, 200-blade switching assembly, 201-first panel, 202-first connecting rod, 203-second panel, 204-first through hole, 205-second through hole, 206-third through hole, 207-fourth through hole, 208-first sliding rod, 209-first limiting plate, 210-first elastic member, 211-second sliding rod, 212-second limiting plate, 213-second elastic member, 214-rotating shaft, 215-third panel, 216-flange, 217-fifth through hole, 218-fourth elastic member, 219-mounting hole, 220-card plate, 300-blade box, 301-opening, 302-sixth through hole, 400-second connecting rod. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figure 1 , Attachment Figure 2 and attached Figure 6As shown, a switchable blade type film cutting device is disclosed in this embodiment, including a mounting frame, a blade box 300 for placing a blade (not shown in the figure) and a blade switching assembly 200; the blade box 300 is elastically connected to the mounting frame; at least two blades (not shown in the figure) are placed in the blade box 300; the blade switching assembly 200 is welded to the blade box 300 through a second connecting rod 400. In the embodiment, the blade switching assembly 200 includes a support member, a rotating assembly and a first sliding assembly and a second sliding assembly; a rotating shaft 214 is provided on the support member; the rotating assembly is rotatably mounted on the rotating shaft 214; the first sliding assembly and the second sliding assembly are slidably arranged on the support member; one end of the first sliding assembly is connected to the one blade (not shown in the figure), and the other end is in contact with the rotating assembly; one end of the second sliding assembly is connected to the other blade (not shown in the figure), and the other end is in contact with the rotating assembly. Another embodiment also includes a third sliding assembly.

[0032] Reference Figure 2 As shown, the support member in the embodiment includes a first panel 201, a second panel 203 and a first connecting rod 202; the first panel 201 and the second panel 203 are respectively threadedly connected to the first connecting rod 202; the support member is an I-shaped structure; the first panel 201 is provided with a first through hole 204 and a second through hole 205, and the second panel 203 is correspondingly provided with a third through hole 206 and a fourth through hole 207; the third through hole 206 and the first through hole 204 are called a first group of through holes, and the fourth through hole 207 and the second through hole 205 are called a second group of through holes, forming two groups of through hole structures; the first sliding component is inserted in the first group of through holes, and the second sliding component is inserted in the second group of through holes. In the embodiment, the rotating shaft 214 is provided on the first panel 201; an annular groove is provided at one end of the rotating shaft 214 away from the first panel 201.

[0033] Further, in the embodiment, the first sliding assembly includes a first sliding rod 208 and a first elastic member 210, and the second sliding assembly includes a second sliding rod 211 and a second elastic member 213; one end of the first sliding rod 208 passes through the third through hole 206 and the first through hole 204 in sequence, and leaves a protruding section on the upper part of the first panel 201 to contact the rotating assembly, and the other end is connected to a blade (not shown in the figure); one end of the second sliding rod 211 passes through the fourth through hole 207 and the second through hole 205 in sequence, and leaves a protruding section on the upper part of the first panel 201 The first sliding rod 208 has a first limit plate 209 at the part between the first panel 201 and the second panel 203, and a first elastic member 210 is provided between the first limit plate 209 and the second panel 203; the second sliding rod 211 has a second limit plate 212 at the part between the first panel 201 and the second panel 203, and a second elastic member 213 is provided between the second limit plate 212 and the second panel 203; the first elastic member 210 and the second elastic member 213 are both springs. In the embodiment, when the blade (not shown in the figure) connected to the sliding assembly is pushed out of the knife box 300, the corresponding elastic member is in a compressed state; when the blade (not shown in the figure) is retracted into the knife box, the corresponding elastic member is in a natural state.

[0034] Reference Figure 3 As shown, in another embodiment, the support member is only provided with a second panel 203 , and the rotating shaft 214 is provided on the second panel 203 .

[0035] Reference Figure 2 , Attachment Figure 5 As shown, further, in the embodiment, the rotating component includes a third panel 215 and a flange 216; the flange 216 is fixed to the lower surface of the third panel 215; the flange 216 can be understood as a boss structure with a gradual transition protrusion that is symmetrically arranged on both sides from a point on the flange 216; a fifth through hole 217 is provided on the third panel 215; the rotating component is connected with the annular groove on the rotating shaft 214 through the fifth through hole 217.

[0036] Reference Figure 4As shown, in another embodiment, the rotating shaft 214 is a hollow structure, and a fourth elastic member 218 is provided inside; a mounting hole 219 is provided at the center of the third panel 215 in the rotating assembly; the end of the rotating shaft 214 away from the first panel 201 is inserted into the mounting hole 219, and the fourth elastic member 218 is fixedly connected to the first panel 201 at one end, and the other end passes through the third panel 215 and is rotatably connected to the third panel 215 by means of a clamping plate 220; the fourth elastic member 218 is in a stretched state. In the embodiment, when switching blades (not shown in the figure), the rotating assembly can be directly rotated, or the rotating assembly can be lifted and rotated to the sliding rod position corresponding to the blade to be switched (not shown in the figure) and then put down, and the rotating assembly is pressed against the rotating shaft 214 under the action of the fourth elastic member 218, so that the jump switching of the blade (not shown in the figure) can be realized; the fourth elastic member 214 is a spring.

[0037] Reference Figure 6 As shown, in the embodiment, the knife box 300 is in the shape of a triangular prism, and an opening 301 is provided on one of its edges, and the length of the opening 301 is slightly larger than the length of the blade (not shown in the figure); the width of the opening 301 is 1.0-2.0 mm; a group of symmetrical sixth through holes 302 are provided on the surface opposite to the opening 301, and the two sixth through holes 302 are provided at the edges of the surface near the two ends; the sliding rod passes through the sixth through hole 302 and enters the knife box 300 to connect with the blade (not shown in the figure).

[0038] Reference Figure 1 As shown, the mounting frame in the embodiment includes two side plates 103, two bases 101 and a support rod 102. In the embodiment, the base 101 is L-shaped, which can make the device more stable; the support rod 102 is connected to the vertical plate of the base 101 by screws, and the two side plates 103 are respectively fixed to the two ends of the support rod 102. In another embodiment, the support rod 102 is welded to the base 101.

[0039] Reference Figure 6 As shown, further, a connecting column 104 is provided at the fixed end of the side plate 103, and a film roll buckle 106 is provided at the other end; a third elastic member 105 is also provided on the inner side of the side plate 103; one end of the third elastic member 105 is fixedly connected to the connecting column 104, and the other end passes through the bottom of the film roll buckle 106 and is connected to the knife box 300; the third elastic member 105 is in a stretched state. In the embodiment, when cutting the die, the third elastic member 105 can make the knife box 300 close to the film roll buckle 106, and when replacing the film roll (not shown in the figure), the knife box 300 can be pulled open for replacement, and after the replacement is completed, the knife box is retracted and close to the film roll buckle 106; the third elastic member 105 is a spring.

[0040] Furthermore, in the embodiment, a blade model mark (not shown in the figure) is provided on the side of the first panel 201, corresponding to the corresponding sliding rod, so as to facilitate identification of the blade (not shown in the figure) connected to the sliding rod.

[0041] Furthermore, the switchable blade film cutting device is symmetrically provided with two blade switching components 200, which are respectively located at the two ends of the knife box 300 and correspond to the sixth through hole 302 on the knife box 300. When in use, the rotating components on both sides can be rotated at the same time, so that the blade (not shown in the figure) can smoothly enter and exit the knife box 300.

[0042] This embodiment also discloses a switchable blade type film cutting device, which includes any of the switchable blade type film cutting devices described above.

[0043] The embodiment described above is only one of the more preferred specific embodiments of the present invention. Any common changes and substitutions made by technicians in this field within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A switchable blade type film cutting device, comprising a mounting frame, characterized in that: It also includes a knife box (300) for placing blades and a blade switching assembly (200); the knife box (300) is elastically connected to the mounting frame; the knife box (300) contains at least two types of blades; the blade switching assembly (200) is connected to the knife box (300); The blade switching assembly (200) comprises a support member, a rotating assembly and at least two sliding assemblies; the support member is provided with a rotating shaft (214); the rotating assembly is rotatably mounted on the rotating shaft (214); the sliding assembly is slidably mounted on the support member; one end of the sliding assembly is connected to the blade, and the other end is in contact with the rotating assembly; The sliding assembly comprises a sliding rod and an elastic member; the knife box (300) is in the shape of a triangular prism, an edge of which is provided with an opening (301), and a group of sixth through holes (302) which are symmetrical on the surface opposite to the opening (301); the sliding rod passes through the sixth through hole (302) to enter the knife box (300) and is connected to a blade; the blade switching assembly (200) is provided with two groups, which are respectively fixed at two ends of the knife box (300) and correspond to the sixth through hole (302); the rotating assembly comprises a third panel (215) and a flange (216); the flange (216) is fixed to the lower surface of the third panel (215); when the rotating assembly is rotated, the flange (216) squeezes the sliding rod, and the sliding rod passes through the sixth through hole (302) to push the blade in the knife box (300) out of the opening (301); The mounting frame comprises two side plates (103), a base (101) and a support rod (102); the support rod (102) is mounted on the base (101); the two side plates (103) are respectively fixed to the two ends of the support rod (102); the base (101) is L-shaped; the side plate (103) is provided with a connecting column (104) at one end close to the fixed end, and a film roll buckle (106) is provided at the other end; a third elastic member (105) is provided on the inner side of the side plate (103), one end of the third elastic member (105) is connected to the connecting column (104), and the other end passes through the bottom of the film roll buckle (106) and is connected to the knife box (300), so that the knife box (300) can be close to or away from the film roll buckle (106).

2. The switchable blade type film cutting device according to claim 1, characterized in that: The support member comprises a first panel (201), a second panel (203) and a first connecting rod (202) connecting the first panel (201) and the second panel (203); the first panel (201) and the second panel (203) are provided with at least two groups of corresponding through holes around the first connecting rod (202) for installing a sliding component.

3. The switchable blade film cutting device according to claim 1, characterized in that: A portion of the sliding rod located between the first panel (201) and the second panel (203) is provided with a limiting plate; and the elastic member is provided between the limiting plate and the second panel (203).

4. The switchable blade film cutting device according to claim 1, characterized in that: The third elastic member (105) is in a stretched state.

5. A switchable blade type film cutting device, characterized in that: The invention comprises the switchable blade type film cutting device as described in any one of claims 1 to 4 above.

Images