A punching machine

Abstract

The utility model discloses a punching machine, including a base, a punching platform connected to the base, and a pressure cover pivotally connected to the punching platform, a knife core assembly is arranged on the punching platform, the knife core assembly includes at least three knife cores, a knife seat for supporting the knife cores, and a support plate for detachably connecting the knife seat, the support plate is arranged on the punching platform, at least one side of the punching platform is provided with an extension plate, and the extension plate is provided with an extension positioning hole column. The punching machine in the utility model has a knife core assembly that can be replaced at any time, has a compact structure and is easy to store, and assists the user in continuous punching through the extension plate, making it more convenient to use and more efficient.

Description

Technical Field

[0001] The utility model relates to a punching machine. Background Art

[0002] Existing punching machines are relatively large in structure, and most of them are only equipped with one or two knife cores, which are inefficient when used, and it is difficult to ensure that the positions of multiple holes remain unchanged. In addition, the knife cores are mostly fixed and cannot be replaced according to usage needs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the punching machine in the prior art, such as low continuous punching efficiency, inability to replace the blade core and inconvenience in use, and to propose a punching machine.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A punching machine, characterized in that it includes a base, a punching platform clamped to the base, and a pressure cover pivotally connected to the punching platform, a knife core assembly is provided on the punching platform, the knife core assembly includes at least three knife cores, a knife seat for supporting the knife cores, and a support plate for detachably connecting the knife seat, the support plate is arranged on the punching platform, at least one side of the punching platform is provided with an extension plate, and the extension plate is provided with an extension positioning hole column.

[0006] Among them, the longitudinal section of the support plate is L-shaped, including a vertical plate extending upward and a bottom plate extending horizontally, the first mounting holes corresponding to the knife seat are horizontally arranged on the vertical plate, and the back side of the knife seat opposite to the first mounting hole is provided with a corresponding second mounting hole, the central axes of the first mounting hole and the second mounting hole coincide with each other and are connected by screws.

[0007] Wherein, a positioning column is provided at the bottom of the base plate, a third mounting hole corresponding to the positioning column is provided on the punching platform, and the support plate is fixed to the punching platform through the third mounting hole and the positioning column.

[0008] Among them, the top of the knife seat is provided with a through hole for passing the knife core, the through hole passes through the top and bottom surfaces of the knife seat, the periphery of the through hole is provided with an annular groove for sleeveing ​​a spring, and the annular groove passes through the top surface of the knife seat; the top of the knife core is provided with an annular brim, the top of the spring abuts against the bottom of the annular brim, and the bottom of the spring abuts against the bottom of the annular groove, and the front of the knife seat is provided with a slot for accommodating the edge of the paper to be punched and extending toward directly below the knife core.

[0009] Wherein, the surface of the punching platform is provided with an avoidance hole for avoiding the knife core.

[0010] Among them, arm plates are provided on both sides of the punching platform, and first pivot holes are correspondingly provided on the arm plates; second pivot holes corresponding to the first pivot holes are provided on both sides of the pressure cover; the punching platform and the pressure cover are pivoted by a group of pins and buckles cooperating with the first pivot hole and the second pivot hole; the first pivot hole is located at the front end of the arm plate, and the second pivot hole is located at the front end of the pressure cover.

[0011] Wherein, a downwardly protruding pressure strip convex portion is provided on the lower surface of the pressure cover, and the pressure strip convex portion abuts against the top of the annular brim.

[0012] Wherein, the extension plate is also provided with a baffle located on the side of the extension positioning hole column for resisting the edge of the paper.

[0013] Wherein, the drilling platform and the base form a chip collection chamber.

[0014] Wherein, the inner surface of the base is provided with reinforcing ribs.

[0015] Wherein, the base is made of plastic.

[0016] The extension plate is detachably connected to the base, a slot is provided on the edge of the base, and a tongue matching the slot is provided at the relative position of the extension plate.

[0017] Wherein, the extension plate and the base are integrally formed.

[0018] Wherein, a paper ruler is arranged at the front end of the pressure cover and / or the front end of the base, and a slope extending forward is formed at the front end of the base.

[0019] The above technical solution can achieve the following beneficial effects: the punching machine in the utility model has a blade core assembly that can be replaced at any time, has a compact structure and is easy to store, and assists the user in continuous punching through the extension plate, making it more convenient to use and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of a punching machine according to a preferred embodiment of the present invention.

[0021] Figure 2 yes Figure 1 A front view of the assembled punch of the preferred embodiment.

[0022] Figure 3 yes Figure 2 Rear view of the hole punch in FIG.

[0023] Figure 4 yes Figure 2 Cross-sectional view of the punching machine in FIG.

[0024] Figure 5 yes Figure 2 The usage status diagram of the punching machine in . DETAILED DESCRIPTION

[0025] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] like Figure 1-5 As shown, the punching machine in this embodiment includes a base 2, a punching platform 3 connected to the base 2, and a pressure cover 1 pivotally connected to the punching platform 3. The punching platform 3 is provided with a knife core assembly, which in this embodiment includes four knife cores 6, a knife seat 5 for supporting the knife core, and a support plate 4 for detachably connecting the knife seat 5, the support plate 4 is provided on the punching platform 3, and extension plates 21 are respectively provided on both sides of the punching platform 3, and the extension plates 21 are provided with extension positioning hole columns.

[0028] Specifically, the longitudinal section of the support plate 4 is L-shaped, including an upwardly extending vertical plate 41 and a horizontally extending bottom plate 42. The vertical plate 41 is horizontally arranged with a first mounting hole 411 corresponding to the knife seat. The back side of the knife seat 5 opposite to the first mounting hole 411 is provided with a corresponding second mounting hole (not shown in the figure). The central axes of the first mounting hole 411 and the second mounting hole coincide with each other and are connected by screws 412.

[0029] A positioning column 421 is provided at the bottom of the base plate 42 , a third mounting hole 33 corresponding to the positioning column 421 is provided on the punching platform 3 , and the support plate 4 is fixed on the punching platform 3 through the third mounting hole 33 and the positioning column 421 .

[0030] The top of the knife seat 5 is provided with a through hole 51 for inserting the knife core 6, and the through hole 51 passes through the top and bottom surfaces of the knife seat 5. The periphery of the through hole 51 is provided with an annular groove 53 for sleeve-mounting the spring 7, and the annular groove 53 passes through the top surface of the knife seat 5. The top of the knife core 6 is provided with an annular brim, and the top of the spring 7 abuts against the bottom of the annular brim, and the bottom of the spring 7 abuts against the bottom of the annular groove 53. The front of the knife seat 5 is provided with a slot 52 for accommodating the edge of the paper to be punched and extending directly below the knife core 6. In addition, the surface of the punching platform 3 is provided with an avoidance hole 32 for avoiding the knife core 6.

[0031] The punching platform 3 is provided with arm plates 31 on both sides, and the arm plates 31 are correspondingly provided with first pivot holes 311; the press cover 1 is provided with second pivot holes 12 corresponding to the first pivot holes 311 on both sides; the punching platform 3 and the press cover 1 are pivotally connected through a group of latches 312 and buckles 313 that cooperate with the first pivot holes 311 and the second pivot holes 12 on the same side. In addition, the first pivot hole 311 is located at the front end of the arm plate 31, and the second pivot hole 12 is located at the front end of the press cover 1, so that after pivoting, the press cover 1 forms a natural tilt state relative to the punching platform 3.

[0032] like Figure 3 and Figure 4 As shown, the lower surface of the gland 1 is provided with a downwardly protruding pressure strip convex portion 11, and the pressure strip convex portion 11 abuts against the top of the annular brim.

[0033] The extension plate 21 is also provided with a baffle 212 located on the side of the extension positioning hole column 211 for resisting the edge of the paper. When extending the punching, the last hole of the punched group is inserted into the extension positioning hole column 211, and the edge of the paper is against the baffle 212 to prevent the position of the subsequent punching from being offset.

[0034] In order to prevent the punching platform from collapsing downward after long-term use, reinforcing ribs 24 are provided on the inner surface of the base.

[0035] In this embodiment, the extension plate is detachably connected to the base. A slot 22 is provided at the edge of the base 2, and a tongue 213 matching the slot 22 is provided at the relative position of the extension plate 21. The extension plate 21 is connected to the base 2 through the slot 22 and the tongue 213. Of course, in other embodiments, the extension plate can also be formed integrally with the base, and the number of the extension plate can also be one.

[0036] In addition, the base 2 in this embodiment is made of plastic, and the punching platform 2 and the base 2 form a scrap collection chamber to collect paper scraps after punching. The front end of the pressure cover 1 and the front end of the base 2 are provided with a paper ruler, and the front end of the base 2 is also formed with a slope extending forward, so as to facilitate the insertion of paper into the slot 52.

[0037] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A punching machine, characterized in that: It includes a base, a punching platform clamped with the base, and a pressure cover pivotally connected to the punching platform. A knife core assembly is provided on the punching platform, and the knife core assembly includes at least three knife cores, a knife seat for supporting the knife core, and a support plate for detachably connecting the knife seat. The support plate is arranged on the punching platform. An extension plate is provided on at least one side of the punching platform, and an extension positioning hole column is provided on the extension plate.

2. The punching machine according to claim 1, characterized in that: The longitudinal section of the support plate is L-shaped, including an upwardly extending vertical plate and a horizontally extending bottom plate, the vertical plate is horizontally arranged with first mounting holes corresponding to the knife seat, and the back side of the knife seat opposite to the first mounting hole is provided with corresponding second mounting holes, the central axes of the first mounting hole and the second mounting hole coincide with each other and are connected by screws.

3. The punching machine according to claim 2, characterized in that: A positioning column is provided at the bottom of the base plate, a third mounting hole corresponding to the positioning column is provided on the punching platform, and the support plate is fixed to the punching platform through the third mounting hole and the positioning column.

4. The punching machine according to claim 3, characterized in that: The top of the knife seat is provided with a through hole for passing the knife core, the through hole passes through the top and bottom surfaces of the knife seat, the periphery of the through hole is provided with an annular groove for sleeveing ​​a spring, the annular groove passes through the top surface of the knife seat; the top of the knife core is provided with an annular brim, the top of the spring abuts against the bottom of the annular brim, the bottom of the spring abuts against the bottom of the annular groove, and the front of the knife seat is provided with a slot for accommodating the edge of the paper to be punched and extending toward directly below the knife core.

5. The punching machine according to claim 4, characterized in that: The surface of the punching platform is provided with an avoidance hole for avoiding the knife core.

6. The punching machine according to claim 5, characterized in that: Arm plates are provided on both sides of the punching platform, and first pivot holes are correspondingly provided on the arm plates; second pivot holes corresponding to the first pivot holes are provided on both sides of the pressure cover; the punching platform and the pressure cover are pivotally connected by a group of pins and buckles that cooperate with the first pivot hole and the second pivot hole; the first pivot hole is located at the front end of the arm plate, and the second pivot hole is located at the front end of the pressure cover.

7. The punching machine according to claim 6, characterized in that: The lower surface of the pressure cover is provided with a downwardly protruding pressure strip convex portion, and the pressure strip convex portion abuts against the top of the annular hat brim.

8. The punching machine according to claim 7, characterized in that: The extension plate is also provided with a baffle located on the side of the extension positioning hole column for resisting the edge of the paper.

9. The punching machine according to claim 8, characterized in that: The punching platform and the base form a chip collecting chamber.

10. The punching machine according to claim 9, characterized in that: The inner surface of the base is provided with reinforcing ribs.

11. The punching machine according to claim 10, characterized in that: The base is made of plastic.

12. The punching machine according to claim 11, characterized in that: The extension plate is detachably connected to the base, a slot is provided at the edge of the base, and a latch tongue matching the slot is provided at the relative position of the extension plate.

13. The punching machine according to claim 11, characterized in that: The extension plate and the base are integrally formed.

14. The punching machine according to claim 1, characterized in that: A paper ruler is arranged at the front end of the pressure cover and / or the front end of the base, and a slope extending forward is formed at the front end of the base.

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