Loose-leaf binding puncher facilitating increase and decrease of stamping knives

Abstract

The loose-leaf binding puncher comprises a cutter passing part, a plurality of stamping cutter holes are formed in one face of the cutter passing part, a paper inlet which is concave inwards is formed in the side face of the cutter passing part, and the stamping cutter holes are communicated with the paper inlet and penetrate through the cutter passing part. One end of each stamping knife is provided with a knife cap, and the other end of each stamping knife extends into a stamping knife hole in a sliding manner; comprising a spring which sleeves the stamping knife, one end of the spring abuts against the knife cap, and the other end of the spring abuts against the knife passing piece. The punching device has the beneficial effects that the punching knife is detachably connected with the knife passing piece, so that the punching quantity and the punching gap can be adjusted as required; through detachable connection of the cutter passing piece and the base, the cutter passing pieces with different hole types and the punching cutters matched with the cutter passing pieces can be replaced, and therefore the punching requirements of a user for different hole types are met; by arranging the limiting piece, the hinging angle of the punching pressing plate and the base is adjusted, and therefore the punching state of the puncher can be switched at any time, and the punching knife increasing and decreasing state can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of hole punchers, in particular to a loose-leaf binding hole puncher which is convenient for adding and removing punching knives. Background Art

[0002] In the office field, documents need to be bound, and loose-leaf binding is very popular. When loose-leaf binding is performed, a hole puncher is needed to punch holes in the paper to allow the user to place the paper in a binder.

[0003] In the prior art, a Chinese utility model patent with authorization announcement number: CN220784203U discloses a combined loose-leaf hole puncher, wherein the knife bar assembly of the hole puncher includes a set of knife bars and a knife holder, the knife holder is fixed between two knife seat side plates, the bottom of the knife holder is higher than or flush with the upper edge of the loose-leaf entrance, and the knife holder is provided with two rows of corresponding knife holes in an upper and lower row, and a knife bar that can slide vertically is installed in each set of corresponding knife holes; it also includes a base and a knife group, the front side of the base is provided with a plurality of positioning members that overhang upward, and the bottom plate of the knife seat of the knife group is provided with a positioning hole, the positioning member is detachably connected to the positioning hole, thereby locking the knife group and the front side of the base; at the same time, locking buckles are installed on the left and right sides of the rear side of the base, and the two knife seat side plates of the knife group are extended backward and locked in the two locking buckles, thereby locking the knife group and the rear side of the base. Although the utility model solves the problem that the knife group and the base of the loose-leaf hole puncher cannot be disassembled, the knife rod and the knife holder of the device are fixed structures, and the knife rod cannot be disassembled from the knife holder; therefore, when the number of holes punched and the interval between holes punched need to be adjusted, the entire knife group needs to be replaced. Therefore, in order to flexibly adjust the number of holes punched and the interval between holes punched, a more suitable solution needs to be designed. Utility Model Content

[0004] The problem that the tool rod and the tool holder in the above technology cannot be disassembled, resulting in the inability to flexibly adjust the number of holes and the hole spacing.

[0005] The utility model provides a loose-leaf binding hole puncher which is convenient for adding and removing punching knives, comprising a knife member, one side of which is provided with a plurality of punching knife holes, a side surface of which is provided with a paper feed port recessed inwardly, the punching knife holes being connected to the paper feed port and passing through the knife member; further comprising a plurality of punching knives, one end of which is provided with a knife cap, and the other end of which slides into the punching knife holes; further comprising a spring, the spring being sleeved on the punching knife, one end of the spring abutting against the knife cap, and the other end abutting against the knife member.

[0006] As a further improvement of the present invention, the plurality of punch holes are arranged in a matrix.

[0007] As a further improvement scheme of the utility model, it also includes a base and a punching plate, one end of the base is provided with a base vertical plate protruding upward, the base is hinged to the punching plate, wherein the knife piece is installed on a side of the base facing the punching plate, and the paper feed port of the knife piece is located on the side opposite to the base vertical plate.

[0008] As a further improvement of the present invention, the base upright plate is provided with two raised side plates, and the two side plates fix the two ends of the first cross bar; the punching plate is provided with a raised hinge, and the hinge is rotatably sleeved on the first cross bar and hinged with the base upright plate.

[0009] As a further improvement scheme of the utility model, it also includes a second cross bar, the two ends of which are fixed to the two side panels and are located on the side of the first cross bar close to the base, the hinge is also provided with a raised abutment block, and the plate surface of the base vertical plate is provided with an opening; it also includes a limiting member, which is rotatably sleeved on the second cross bar, the pressing end of the limiting member extends from the opening, and the abutment end of the limiting member abuts the abutment block; it also includes a torsion spring, which is coaxially rotatably sleeved on the second cross bar with the limiting block, one end of the torsion spring abuts the base vertical plate, and the other end abuts the limiting block.

[0010] As a further improvement of the present invention, the base is provided with a fixing groove, the fixing groove is detachably connected to the cutting piece, and a gap is left between the base and the cutting piece, the gap is connected to the punching knife hole at the bottom of the cutting piece.

[0011] As a further improvement of the present invention, the knife piece is also provided with two locking blocks facing the base upright plate and a fixed block opposite to the base upright plate, the two locking blocks respectively abut against the two side plates of the base upright plate, and the fixed block is engaged with the fixed groove of the base; the base supports the knife piece through two side surfaces to form a gap, and one of the side surfaces is provided with a paper pouring port connected to the outside.

[0012] As a further improvement of the present invention, it further comprises an operation plate, the operation plate is detachably connected to the base, and the working surface of the operation plate is flush with the paper feed port plane of the knife member.

[0013] As a further improvement of the present invention, a slide rail is installed on the working surface of the work plate, and the slide rail is connected to a paper stop block.

[0014] As a further improvement of the present invention, a tool pressing rod is provided on the side of the punching plate facing the tool passing member, and the tool pressing rod is arranged in the shape of a coaxial cylinder with different radii, and the radius decreases in steps from the middle to both ends; a plurality of tool storage grooves are also provided on the side of the punching plate facing the tool passing member.

[0015] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model provides a loose-leaf binding punch that is convenient for adding and reducing punching knives, which can adjust the number of punching holes and the punching gap as needed through the detachable connection between the punching knife and the knife piece; through the detachable connection between the knife piece and the base, the knife piece with different hole shapes and the punching knife matched with the knife piece can be replaced, thereby meeting the user's punching needs for different hole shapes; by setting a limit piece, the hinge angle of the punching pressure plate and the base is adjusted, so as to realize the switching of the punching state of the puncher and the addition and reduction of the punching knife state at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 For this utility model Figure 1 A partial enlarged view of area A.

[0018] Figure 3 It is another perspective view of the present invention.

[0019] Figure 4 This is a base diagram of the present utility model.

[0020] Figure 5 This is a diagram of a punching plate of the present utility model.

[0021] Figure 6 This is a connection diagram of the limiter and the punching plate of the utility model.

[0022] Figure 7 For this utility model Figure 6 A partial enlarged view of area B.

[0023] The main component symbols are described as follows:

[0024] 1. Punching plate; 2. Base; 3. Base plate; 4. Knife piece; 5. Punching knife hole;

[0025] 6. Punch knife; 7. Spring; 8. Knife cap; 9. Paper inlet; 10. Fixed slot;

[0026] 11. Positioning block; 12. Fixing block; 13. Working board; 14. Slide rail;

[0027] 15. Paper stopper; 16. Tool storage slot; 17. Limiting piece; 18. Torsion spring;

[0028] 19. knife pressing rod; 20. abutment block; 21. abutment end; 22. pressing end;

[0029] 23. First horizontal bar; 24. Second horizontal bar. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0031] In the following description, the example details are given to provide a deeper understanding of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. It should be understood that the specific embodiments are only used to explain the utility model, and are not used to limit the utility model.

[0032] It should be understood that when the terms "include" and / or "comprises" are used in this specification, they indicate the existence of the stated features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0033] See also Figures 1 to 7 The utility model is a loose-leaf binding puncher that is convenient for adding and removing punching knives, including a knife member 4, one side of which is provided with a plurality of punching knife holes 5, and a side of the knife member 4 is provided with an inwardly recessed paper feed port 9, the punching knife holes 5 are connected to the paper feed port 9 and pass through the knife member 4; it also includes a plurality of punching knives 6, one end of the punching knives 6 is provided with a knife cap 8, and the other end slides into the punching knife hole 5; it also includes a spring 7, which is sleeved on the punching knives 6, one end of the spring 7 abuts the knife cap 8, and the other end abuts the knife member 4, so that the punching knives 6 and the knife member 4 are detachably connected. Among them, the plurality of punching knife holes 5 are arranged neatly and evenly distributed on the knife member 4, so that the holes punched by the puncher are arranged neatly and the hole gaps are evenly distributed.

[0034] Please refer to 1. Figure 2 and Figure 3 In the utility model, it also includes a base 2 and a punching plate 1, one end of the base 2 is provided with a base upright plate 3 protruding upward, the base 2 is hinged with the punching plate 1 through the base upright plate 3, wherein the base 2 is used to fix the knife piece 4, when punching, the punching plate 1 is pressed, the punching plate 1 squeezes the knife cap 8, the knife cap 8 compresses the spring 7 and makes the punching knife 6 move downward in the punching knife hole 5, the punching knife 6 penetrates the paper feed port and reaches the bottom of the knife piece 4, thereby completing the punching; at the same time, the punching knife 6 is detachably connected to the knife piece 4, to adjust the number of punching holes and the punching gap, it is only necessary to disassemble the punching knife 6 on the knife piece 4 accordingly, and the punching knife holes 5 are set to 10 so that a maximum of 10 holes can be punched in the paper at one time.

[0035] Furthermore, the base upright plate 3 is provided with two raised side plates, which fix the two ends of the first cross bar 23; the punching plate 1 is provided with a raised hinge, which is hinged to the base upright plate 3 through the first cross bar 23, so that the punching plate 1 is connected to the base upright plate 3 through the hinge block.

[0036] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 In the utility model, it also includes a second cross bar 24, the two ends of the second cross bar 24 are fixed to the two side panels and are located on the side of the first cross bar 23 close to the base 2, the hinge is also provided with a raised abutment block 20, and the plate surface of the base vertical plate 3 is provided with an opening; it also includes a limiter 17, the limiter 17 is sleeved on the second cross bar 24, the pressing end 22 of the limiter passes through the plate surface opening of the base vertical plate 3 and extends to the outside of the base vertical plate 3, the abutment end 21 of the limiter abuts the abutment block 20 to limit the angle formed by the hinge of the punching press plate 1 and the base 2; it also includes a torsion spring 18, the torsion spring 18 and the limiter block 17 are coaxially sleeved on the second cross bar 24, one end of the torsion spring 18 abuts the base vertical plate 3, and the other end abuts the limiter block 17.

[0037] The functions of the limiting member are as follows: (1) when the puncher is in the punching working state, the abutting end 21 of the limiting member 17 is clamped with the abutting block 20 of the hinge block of the punching plate 1, and at the same time, the pressing end 22 of the limiting member 17 abuts against the upper end of the opening of the base vertical plate 3 under the action of the torsion spring 18. At this time, the hinge angle between the punching plate 1 and the base 2 cannot be increased, because when the action of increasing the hinge angle is performed, the abutting block 20 of the hinge block of the punching plate 1 applies pressure to the abutting end 21 of the limiting member, and the abutting end 21 is a limiting member 17 that is integrated with the pressing end 22. The abutting end 21 is subjected to the pressure of the abutting block 20, causing the pressing end 22 to perform a lever movement. However, the pressing end 22 has abutted against the upper end of the opening of the base vertical plate 3 under the action of the torsion spring 18, so the pressing end 22 cannot move, resulting in the inability to increase the hinge angle of the punching plate 1 and the base 2; at this time, the limit member 17 limits the hinge angle of the punching plate 1 and the base 2, and does not allow the angle to be too large, thereby ensuring that after punching, the punching knife 6 will not be separated from the knife member 4 due to the action of the spring 7, but will be abutted against the pressing knife rod 19 through the knife cap 8 and remain in the punching knife hole 5. In this state, the punching knife 6 cannot be replaced, so when the punch is used in a family, it can effectively prevent the detachable punching knife from causing accidental injuries to children.

[0038] (2) When the punch is in the state of replacing the punch blade, it is changed from the working state to the state of replacing the punch blade by pressing the punching plate 1 and then pressing the pressing end 22 of the limiter 17. When the punching plate 1 is pressed, the abutment block 20 at the hinge of the punching plate 1 is separated from the abutment end 21 of the limiter 17, and then the pressing end 22 of the limiter 17 is pressed. Since the abutment block 20 is separated from the abutment end 21, the pressing end 22 of the limiter 17 is pressed, so that the limiter 17 is pressed. The abutting end 21 is out of the engagement range with the abutting block 20, so that the abutting block 20 at the hinge of the punching plate 1 is not engaged, thereby increasing the hinge angle between the punching plate 1 and the base 2. At this time, the punch 6 on the knife member 4 can be disassembled. When it is necessary to convert the punching knife replacement state of the puncher to the punching working state, the punching plate 1 is pressed, and the limiting member 17, under the action of the torsion spring 18, makes the abutting end 21 return to its original position, thereby engaging the abutting block 20.

[0039] See also Figure 3 and Figure 4 In order to collect paper scraps generated when the punching knife punches holes, in the utility model, the base 2 is provided with a fixing groove 10, and the fixing groove 10 is located at the bottom of the knife piece 4 to fix the knife piece 4. A gap is left between the base 2 and the knife piece, and the gap is connected to the punching pressure plate at the bottom of the knife piece.

[0040] Furthermore, the knife member 4 is also provided with two locking blocks 11 facing the base upright plate 3 and a fixed block 12 opposite to the base upright plate, the two locking blocks 11 respectively abut against the two side plates of the base upright plate 3, and the fixed block 12 is engaged with the fixed groove 10 of the base; the base 2 supports the knife member 4 through two side surfaces to form a gap, and one of the side surfaces is provided with a paper pouring port connected to the outside. When the punching knife 6 punches the paper, the paper scraps generated by the punching knife 6 fall into the gap.

[0041] Furthermore, in the utility model, the cutter member 4 is fixedly connected to the base 2 via the fixing groove 10, and the cutter member 4 is detachably connected to the base 2, so the cutter member 4 can be replaced according to the user's needs for various punching hole types to meet the user's diverse punching needs.

[0042] See also Figure 1 and Figure 4 In the utility model, it also includes a work board 13, which is detachably connected to the base 2. The base 2 is provided with a slot adapted to the work board 13, so that the work board 13 is fixed to the base 2. The working surface of the work board 13 is flush with the plane of the paper feed port 9 of the knife member 4 so that the paper can be horizontally placed in the paper feed port 9 for punching.

[0043] Furthermore, in the present invention, a slide rail 14 is provided on the working surface of the work plate 13 , and the slide rail 14 is connected to a paper stopper 15 , and the corresponding punching position of the paper is controlled by adjusting the paper stopper 15 on the slide rail 14 .

[0044] Preferably, a punching guide is provided on the surface of the operation board 13, with specific punching operation steps for different sizes and types of paper, and specific operation steps are also provided for different numbers of punchings of the same type of paper. This setting can make the puncher more suitable for a wider range of ages.

[0045] See also Figure 6 In the utility model, a tool storage groove 16 is provided on the side of the punching plate 1 facing the knife member 4, and a total of 11 tool storage grooves 16 are provided. When the number of punching holes is adjusted, the punching knife 6 that is not used temporarily is stored in the tool storage groove 16 to prevent the tool from being scratched by being placed randomly and also prevent the tool from being lost.

[0046] See also Figure 3 In the present invention, a pressing rod 19 is provided on the side of the punching plate 1 facing the knife member 4. The pressing rod 19 is used to squeeze the knife cap 8 to punch holes. The pressing rod 19 is set to a coaxial cylindrical shape with different radii, and the radius decreases in a step-by-step manner from the middle to the two ends. This design enables the punching knife 6 to make the pressing rod 19 perform in a step-by-step order according to the radius size when punching. The punching knife 6 will generate greater resistance when punching holes in the paper at the same time. This setting enables the punching knife 6 to punch holes in the paper step by step in a small number of times, which greatly reduces the resistance generated during punching.

[0047] When in use, remove the required number of punching knives 6 from the tool storage slot 16 of the punching plate 1, and then put the punching knife 6 into the punching knife hole 5 of the knife member 4 according to the required number of holes to be punched and the punching gap, so that one end of the spring 7 abuts the knife cap 8, and the other end abuts the knife member 4, put the paper to be punched into the paper inlet 9, and then use the paper stop block 15 to adjust the position of the paper. When the position is suitable, press the punching plate 1 so that the knife pressing rod 19 squeezes the knife cap 8 to punch holes, take out the punched paper, and then pour out the paper scraps generated by the punching from the paper pouring hole through the gap in the fixed slot to complete one punching.

[0048] The advantages of the utility model are:

[0049] 1. Through the detachable connection between the punching knife and the cutting piece, the number of holes and the punching gap can be adjusted as needed at any time.

[0050] 2. By setting a fixed groove on the base to fix the cutting piece, the cutting piece can be replaced to meet the punching requirements of different hole types.

[0051] 3. By setting a limiter on the base plate, the hinge angle of the punching plate and the base can be adjusted, which can not only prevent the punching knife from falling off from the cutting piece, but also facilitate the removal of the punching knife and the replacement of the cutting piece.

[0052] 4. By setting a tool storage slot on the punching plate, the punching tool can be easily taken out for use.

[0053] 5. By setting a paper stopper and a slide rail on the work board, it is more convenient to adjust the position of the paper punching.

[0054] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A loose-leaf binding puncher that is convenient for adding and removing punches, characterized in that: It comprises a knife passing member, one side of which is provided with a plurality of punching knife holes, a side of which is provided with an inwardly recessed paper feed port, and the punching knife holes are connected to the paper feed port and pass through the knife passing member; It also includes a plurality of punching knives, one end of which is equipped with a knife cap, and the other end slides into the knife hole of the punching knife; it also includes a spring, which is sleeved on the punching knife, one end of the spring abuts against the knife cap, and the other end abuts against the knife member.

2. A loose-leaf binding puncher that is convenient for adding and removing punching blades according to claim 1, characterized in that: The plurality of punch holes are arranged in a matrix.

3. A loose-leaf binding puncher that is convenient for adding and removing punching blades according to claim 2, characterized in that: It also includes a base and a punching plate, one end of the base is provided with an upwardly protruding base vertical plate, the base is hinged to the punching plate, wherein the knife piece is installed on a side of the base facing the punching plate, and the paper feed port of the knife piece is located on the side opposite to the base vertical plate.

4. A loose-leaf binding puncher that is convenient for adding and removing punching blades according to claim 3, characterized in that: The base upright plate is provided with two raised side plates, and the two side plates fix the two ends of the first cross bar; the punching plate is provided with a raised hinge, and the hinge is rotatably sleeved on the first cross bar and hinged with the base upright plate.

5. The loose-leaf binding puncher with convenient addition and removal of punching blades according to claim 4, characterized in that: It also includes a second cross bar, the two ends of which are fixed to the two side panels and are located on the side of the first cross bar close to the base, the hinge is also provided with a raised abutment block, and the plate surface of the base vertical plate is provided with an opening; it also includes a limiting member, the limiting member is rotatably sleeved on the second cross bar, the pressing end of the limiting member extends from the opening, and the abutment end of the limiting member abuts the abutment block; it also includes a torsion spring, the torsion spring and the limiting member are coaxially rotatably sleeved on the second cross bar, one end of the torsion spring abuts the base vertical plate, and the other end abuts the limiting member.

6. The loose-leaf binding puncher with convenient addition and removal of punching blades according to claim 3, characterized in that: The base is provided with a fixing groove, the fixing groove is detachably connected to the knife passing member, and a gap is left between the base and the knife passing member, the gap is connected to the punching knife hole at the bottom of the knife passing member.

7. The loose-leaf binding puncher with convenient addition and removal of punching blades according to claim 6, characterized in that: The knife-passing member is also provided with two locking blocks facing the base upright plate and a fixed block opposite to the base upright plate, the two locking blocks respectively abut against the two side plates of the base upright plate, and the fixed block is engaged with the fixed groove of the base; the base supports the knife-passing member through two side surfaces to form a gap, and one of the side surfaces is provided with a paper pouring port connected to the outside.

8. The loose-leaf binding puncher with convenient addition and removal of punching blades according to claim 7, characterized in that: It also includes an operation plate, which is detachably connected to the base, and the working surface of the operation plate is flush with the paper feed port plane of the knife member.

9. The loose-leaf binding puncher with convenient addition and removal of punching blades according to claim 8, characterized in that: The working surface of the working plate is provided with a slide rail, and the slide rail is connected to the paper stopper.

10. The loose-leaf binding puncher with convenient addition and removal of punching blades according to claim 3, characterized in that: A tool pressing rod is arranged on the side of the punching plate facing the tool passing member, and the tool pressing rod is arranged in the shape of a coaxial cylinder with different radii, and the radius decreases in steps from the middle to the two ends; a plurality of tool storage grooves are also arranged on the side of the punching plate facing the tool passing member.

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