U-shaped cutter

Abstract

The utility model discloses a U-shaped cutter, and relates to the technical field of cigarette case packaging film cutting, the U-shaped cutter comprises a cutter holder, a U-shaped cambered surface cutting edge arranged at the bottom of the cutter holder, and a connecting mechanism arranged between the cutter holder and the cambered surface cutting edge, an elastic gap for the cambered surface cutting edge to elastically press downwards is formed in the cutter holder, and a plurality of convex grooves are formed in one side of the cutter holder; the cambered-surface blade is installed and fixed by inserting the convex sliding block into the convex groove and inserting the inserting rod into the inserting hole, when the convex sliding block is plugged into the convex groove, under the guiding of the guiding inclined face and the pulling force of the spring, the inserting rod can automatically move downwards and then automatically move upwards to be inserted into the inserting hole, and therefore the cambered-surface blade can be rapidly installed; the roller can reduce the abrasion between the insertion rod and the cutter holder during installation, the disassembly and assembly process of the cambered-surface cutting edge can be completed only by inserting and pulling the convex sliding block and pulling the connecting plate on the whole, so that the cambered-surface cutting edge only needs to be independently disassembled from the cutter holder for replacement after being abraded, and the later maintenance cost of the cutter is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cigarette box packaging film cutting, in particular to a U-shaped cutter. BACKGROUND

[0002] In the design of cigarette box packaging, a circle of pull line is wound outside the cigarette box packaging film. When the pull line is pulled, the packaging film will be torn along with the pull line, which facilitates the consumer to tear open the packaging film to open the cigarette box. The pull line of the cigarette box packaging film is also called a tear-off head. After the cigarette box is produced and packaged, the excess part of the tear-off head reserved on the packaging film needs to be cut off by a cutter to ensure the appearance of the cigarette box.

[0003] The patent with publication number CN207789030U discloses a "cigarette box gold pull line cutter". The cigarette box gold pull line cutter includes a cutter seat, a cutter handle and a cutter blade. The cutter blade is composed of a main blade section, a straight blade section I and a straight blade section II. The straight blade section I and the straight blade section II are both inclined relative to the vertical direction line. The cutouts on both sides of the tear-off head of the packaging film processed by this cutter are each inclined relative to the vertical direction line. When the packaging film processed by this cutter is torn, after the packaging film is torn along the upper edge cutout to the upper edge position of the gold pull line, the subsequent tearing of the packaging film will be along the upper edge of the gold pull line due to the limitation of the gold pull line. At the same time, the lower edge cutout is below the gold pull line. When the tear-off head is torn, the packaging film can be torn along the lower tear-off cutout to form an inclined opening, so that the entire packaging film can be torn longitudinally, preventing the packaging film from being torn horizontally and then broken. Avoiding that most of the packaging film in the longitudinal direction will still be wrapped on the cigarette box, resulting in that the remaining packaging film is difficult to tear, and the application range of the processed packaging film is wider.

[0004] According to the related technology in the above, the inventors believe that since the cutter is of an integrated type, when the cutter blade is worn out after a long time of use, the cutter composed of the cutter seat and the cutter blade needs to be replaced as a whole, which will increase the maintenance cost of the cutter in the later period, and thus needs to be improved. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the present application provides a U-shaped cutter.

[0006] The U-shaped cutter provided by the present application adopts the following technical scheme:

[0007] The utility model provides a kind of U-shaped cutter, including knife seat, the arc blade of U-shaped being equipped in the bottom of knife seat and the connecting mechanism being equipped between knife seat and arc blade, the elastic slit for the elastic depression of arc blade is opened in the inside of the knife seat, the side of the knife seat is equipped with several convex grooves, the connecting mechanism includes the mounting plate being fixedly equipped in the top of arc blade and the several convex sliders being fixedly equipped in the top of mounting plate and being inserted in convex groove, the insertion hole is opened in the bottom of the knife seat, the insertion rod being inserted in insertion hole is slidably equipped in the bottom of mounting plate, the spring being used for pulling insertion rod to insertion hole is fixedly equipped in the bottom of mounting plate.

[0008] By the above technical scheme, by inserting convex slider into convex groove and inserting insertion rod into insertion hole, arc blade can be installed and fixed, and the disassembly and assembly process of arc blade can be completed by only inserting and pulling convex slider and connecting plate, so that arc blade can be separately disassembled and replaced from knife seat after wearing, thereby reducing the maintenance cost of cutter in later period.

[0009] Preferably, the top of the knife seat is fixedly provided with a fixing hole above the elastic slit.

[0010] By the above technical scheme, the knife seat can be fixedly installed on external cutting driving equipment by screwing bolts through the fixing hole.

[0011] Preferably, the bottom end of the spring is fixedly provided with a connecting plate, the insertion rod is fixedly connected to the top of the connecting plate, the bottom end of the insertion rod is located inside the spring, and the mounting plate is abutted to the bottom of the knife seat.

[0012] By the above technical scheme, the connecting plate can connect the spring and the insertion rod, and the top end of the insertion rod can be inserted into the insertion hole under the pulling force of the spring to install and fix the arc blade at the bottom of the mounting plate.

[0013] Preferably, the top end of the insertion rod is provided with a guide slope on one side for vertically pressing the insertion rod by guiding when the mounting plate is transversely installed, the top of the guide slope of the insertion rod is rotatably provided with a roller for reducing the wear between the insertion rod and the knife seat, the top of the guide slope of the insertion rod is provided with a rotating groove, a rotating rod is rotatably connected in the rotating groove of the insertion rod, the roller is fixedly connected to the outer wall of the rotating rod, and the top end of the roller is located outside the insertion rod.

[0014] By the above technical scheme, when the convex slider is inserted into the convex groove, the insertion rod will automatically move downward and then upward to be inserted into the insertion hole under the guidance of the guide slope and the pulling force of the spring, so that the arc blade can be quickly installed, and the roller can reduce the wear between the insertion rod and the knife seat during installation.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] 1. The curved blade is installed and fixed by inserting the convex slider into the convex groove and the insert rod into the insert hole. When the convex slider is inserted into the convex groove, under the guidance of the guide slope and the tension of the spring, the insert rod will automatically move down and then up to insert into the insert hole, so that the curved blade can be installed quickly. The roller can reduce the wear between the insert rod and the blade holder during installation. The entire process of installing and removing the curved blade can be completed by simply inserting and removing the convex slider and pulling the connecting plate. This allows the curved blade to be removed and replaced separately from the blade holder after it is worn, reducing the later maintenance cost of the cutting blade.

[0017] 2. By setting an arc-shaped blade, the blade can cut the middle of the pull line of the cigarette box packaging film and press indentations on the pull line at both ends, preventing the end of the pull line from lifting and damaging the pull part during production. The elastic gap provides space for the arc-shaped blade to press down elastically, so that only the transparent pull line film on the outside of the cigarette box is broken, thus not damaging the paper of the cigarette box, which is convenient and practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a U-shaped cutter according to an embodiment of this application;

[0019] Figure 2 This is a front cross-sectional view of the overall structure of a U-shaped cutter according to an embodiment of this application;

[0020] Figure 3 This is a bottom view of the overall structure of a U-shaped cutter according to an embodiment of this application;

[0021] Figure 4 This is a right-side view connecting the partial structure of the mounting plate and the tool holder, which is the main embodiment of this application.

[0022] Figure 5 The embodiments of this application mainly embody Figure 2 Enlarged view of the A-structure in the middle;

[0023] Figure 6 The embodiments of this application mainly embody Figure 5 Enlarged view of the B-structure;

[0024] Reference numerals: 1. Tool holder; 11. Elastic gap; 12. Fixing hole; 13. Convex groove; 14. Insertion hole; 2. Curved blade; 21. Mounting plate; 22. Convex slider; 3. Insert rod; 31. Spring; 32. Connecting plate; 33. Guide slope; 34. Rotary groove; 35. Rotating rod; 36. Roller. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0026] This application discloses a U-shaped cutter.

[0027] A U-shaped cutter, referring to Figures 1-3 , including a cutter seat 1, an arc-shaped cutter blade 2 and a connecting mechanism, the arc-shaped cutter blade 2 is U-shaped and arranged at the bottom of the cutter seat 1, the connecting mechanism can connect the cutter seat 1 and the arc-shaped cutter blade 2, the arc-shaped cutter blade 2 can cut the middle of the cigarette box packaging film pull line, and the arc-shaped cutter blade 2 can press the marks on the pull line at both ends, so as to avoid the end of the pull line pulling part from being raised and damaged in the production process.

[0028] Referring to Figures 1-2 , the elastic gap 11 is arranged in the cutter seat 1 for the elastic pressing of the arc-shaped cutter blade 2, the elastic gap 11 can provide the space for the elastic pressing of the arc-shaped cutter blade 2, so as to only press the transparent pull film of the cigarette box, thereby not damaging the paper of the cigarette box, the fixed hole 12 is arranged at the top of the cutter seat 1 and above the elastic gap 11, the bolt can pass through the fixed hole 12 to fix and install the cutter seat 1 on the external cutting driving device, wherein the external cutting driving device is a public technology, which will not be described in detail here.

[0029] Referring to Figure 1 , Figure 2 and Figure 4 , a plurality of convex grooves 13 are arranged on one side of the cutter seat 1, the connecting mechanism includes the mounting plate 21 fixedly arranged at the top of the arc-shaped cutter blade 2, and a plurality of convex sliding blocks 22 fixedly arranged at the top of the mounting plate 21 and inserted into the convex grooves 13, the mounting plate 21 is abutted on the bottom of the cutter seat 1, and the cutter seat 1 can limit the mounting plate 21, after the convex sliding blocks 22 are inserted into the corresponding convex grooves 13, the cutter seat 1 and the mounting plate 21 can be preliminarily connected.

[0030] Referring to Figure 1 , Figure 4 and Figure 5 , the insertion hole 14 is arranged at the bottom of the cutter seat 1, the insertion rod 3 is slidingly arranged at the bottom of the mounting plate 21 and penetrates the mounting plate 21 to be inserted into the insertion hole 14, the spring 31 is fixedly arranged at the bottom of the mounting plate 21 and used to pull the insertion rod 3 to the insertion hole 14, the connecting plate 32 is fixedly arranged at the bottom of the spring 31, the insertion rod 3 is fixedly connected to the top of the connecting plate 32, the bottom end of the insertion rod 3 is located in the spring 31, the spring 31 can shield and protect the bottom end of the insertion rod 3, the connecting plate 32 can connect the spring 31 and the insertion rod 3, under the pulling force of the spring 31, the top end of the insertion rod 3 is inserted into the insertion hole 14, and the cutter seat 1 and the mounting plate 21 are further connected, so as to install and fix the arc-shaped cutter blade 2 at the bottom of the mounting plate 21.

[0031] Referring to Figures 5-6The top of the insertion rod 3 is provided with a guide inclined surface 33 for vertically pressing the insertion rod 3 when the installation plate 21 is transversely moved for installation, when the convex slide block 22 is inserted into the convex groove 13, the installation plate 21 will be transversely moved at the bottom of the tool holder 1, at this time, under the guidance of the guide inclined surface 33, the top of the insertion rod 3 will be pressed into the installation plate 21 to move downward, with the continuous movement of the convex slide block 22 and the installation plate 21, the insertion rod 3 will move to the position directly below the insertion hole 14, at this time, under the elastic force of the spring 31, the top of the insertion rod 3 will be inserted into the insertion hole 14, so as to install and fix the installation plate 21 and the curved blade 2.

[0032] When it is needed to dismount the curved blade 2, the staff can use tweezers or other tools to pull down the connecting plate 32, so that the top of the insertion rod 3 is separated from the insertion hole 14, then the convex slide block 22 is pulled out of the convex groove 13, so that the installation plate 21 and the curved blade 2 can be dismounted integrally.

[0033] Referring to Figures 5-6 The top of the guide inclined surface 33 of the insertion rod 3 is rotatably provided with a roller 36 for reducing the abrasion between the insertion rod 3 and the tool holder 1, the top of the guide inclined surface 33 of the insertion rod 3 is provided with a rotating groove 34, a rotating rod 35 is rotatably connected in the rotating groove 34 of the insertion rod 3, the roller 36 is fixedly connected to the outer wall of the rotating rod 35, the top of the roller 36 is located outside the insertion rod 3, the insertion rod 3 can provide a space for the rotation of the roller 36 through the rotating groove 34, the rotating rod 35 can connect the insertion rod 3 and the roller 36, and the roller 36 can reduce the abrasion between the insertion rod 3 and the tool holder 1 during the dismounting and mounting of the curved blade 2 by rotating itself, so as to prolong the service life of the insertion rod 3 and the tool holder 1.

[0034] The implementation principle of the U-shaped cutter is as follows:

[0035] In use, the tool holder 1 is installed on a cutting driving device outside through the fixing hole 12, the curved blade 2 can cut the middle part of the cigarette box packaging film pull line, and the two ends of the curved blade 2 can press the pull line to form a pressure mark, so as to avoid the end of the pull line pulling part from being lifted and damaged in the production process, the elastic gap 11 can provide a space for the elastic pressing of the curved blade 2, so that only the transparent pull line film of the cigarette box is pressed to be broken, so that the paper of the cigarette box is not damaged;

[0036] When the curved blade 2 needs to be replaced after long-time use and abrasion, the staff can use tweezers or other tools to pull down the connecting plate 32, so that the top of the insertion rod 3 is separated from the insertion hole 14, then the convex slide block 22 is pulled out of the convex groove 13, so that the installation plate 21 and the curved blade 2 can be dismounted integrally, then another curved blade 2 with an installation plate 21 is installed, so that only the curved blade 2 needs to be dismounted and replaced from the tool holder 1 after abrasion, without the need to dismount and replace the cutter composed of the tool holder 1 and the curved blade 2, so that the later maintenance cost of the cutter is reduced;

[0037] When the cambered blade 2 is installed, the staff can insert the convex slider 22 into the corresponding convex slot 13, at this time, the installation plate 21 will slide horizontally at the bottom of the tool holder 1, and under the guidance of the guide slope 33, the top end of the insertion rod 3 will be pressed into the installation plate 21 to move downward, with the continuous movement of the convex slider 22 and the installation plate 21, the insertion rod 3 will move to the position directly below the insertion hole 14, at this time, under the elastic force of the spring 31, the top end of the insertion rod 3 will be inserted into the insertion hole 14, so as to install and fix the installation plate 21 and the cambered blade 2.

[0038] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A U-shaped cutter, comprising a cutter holder (1), a U-shaped curved blade (2) arranged at the bottom of the cutter holder (1), and a connecting mechanism arranged between the cutter holder (1) and the curved blade (2), characterized in that: a resilient gap (11) is arranged in the cutter holder (1) for the resilient depression of the curved blade (2), a plurality of convex grooves (13) are arranged on one side of the cutter holder (1), the connecting mechanism comprises a mounting plate (21) fixedly arranged at the top of the curved blade (2), and a plurality of convex sliding blocks (22) fixedly arranged at the top of the mounting plate (21) and inserted into the convex grooves (13) in cooperation; a plug hole (14) is arranged at the bottom of the cutter holder (1), a plug rod (3) is slidingly arranged at the bottom of the mounting plate (21), the top end of the plug rod (3) penetrates through the mounting plate (21) and is inserted into the plug hole (14) in cooperation, and a spring (31) is fixedly arranged at the bottom of the mounting plate (21) for pulling the plug rod (3) towards the plug hole (14). A fixed hole (12) is fixedly arranged at the top of the cutter holder (1) above the resilient gap (11).

2. A U-shaped cutter according to claim 1, characterized in that: The bottom end of the spring (31) is fixedly provided with a connecting plate (32), and the plug rod (3) is fixedly connected to the top of the connecting plate (32).

3. The U-shaped cutter of claim 1, wherein: The bottom end of the plug rod (3) is located inside the spring (31), and the mounting plate (21) is abutted to the bottom of the cutter holder (1) in cooperation.

4. The U-shaped cutter of claim 1, wherein: A guide inclined surface (33) is arranged on one side of the top of the plug rod (3) for vertically depressing the plug rod (3) through guiding when the mounting plate (21) is transversely installed.

5. The U-shaped cutter of claim 1, wherein: A roller (36) is rotatably arranged at the top of the guide inclined surface (33) of the plug rod (3) for reducing the wear between the plug rod (3) and the cutter holder (1).

6. A U-shaped cutter according to claim 5, wherein: A rotating groove (34) is arranged at the top of the guide inclined surface (33) of the plug rod (3), and a rotating rod (35) is rotatably connected in the rotating groove (34) of the plug rod (3).

7. A U-shaped cutter according to claim 6, wherein: The roller (36) is fixedly connected to the outer wall of the rotating rod (35), and the top end of the roller (36) is located outside the plug rod (3).

8. A U-shaped cutter according to claim 7, wherein: ​

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