CN113103353A

CN113103353A - Punching machine

Info

Publication number: CN113103353A
Application number: CN202110238056.0A
Authority: CN
Inventors: 王荣欲; 陈嘉泽
Original assignee: Apex Mfg Co Ltd
Current assignee: Apex Mfg Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-07-13

Abstract

The invention discloses a punching machine, comprising: the frame body comprises a base and a guide part, the base comprises at least one punched hole, the guide part comprises at least one guide hole opposite to the at least one punched hole, and a space is formed between the corresponding punched hole and the corresponding guide hole; an operating handle movably connected to the frame body; at least one punch driven by the operating handle to move in the guide hole and to enter and exit the punched hole, each punch including a first straight section, a second straight section and a gradually reducing section gradually reducing from the first straight section to the second straight section. The invention can ensure the collimation and the non-deflection of the punched hole, and the clamping problem does not occur after the punching.

Description

Punching machine

Technical Field

The invention relates to a punching machine.

Background

In many occasions, such as offices, schools, offices, etc., there are a lot of paper documents or other objects to be punched, and when the paper documents are sorted, filed, and stored, it is common to punch holes on the paper documents so as to be fastened to devices such as loose-leaf folders.

Generally, a hole-punching machine is widely used to punch a hole in a paper document, and the punch is driven by pressing a pressing handle to penetrate the paper document to form a through hole. However, when a large amount of paper documents are punched, since the punch rod penetrates through the large amount of paper documents, the outer peripheral surface of the punch rod is in large-area contact with the hole walls of the large amount of paper documents, so that the punch rod and the pressing handle are restrained by friction force and cannot be automatically reset, and the punch rod and the pressing handle need to be manually pulled up to reset after each punching, which is very inconvenient, time-consuming and labor-consuming.

Therefore, there is a need to provide a novel and advanced hole-punching machine to solve the above-mentioned problems.

Disclosure of Invention

The invention mainly aims to provide a punching machine which can ensure the collimation and the non-deflection of punching and does not have the problem of clamping after punching.

To achieve the above object, the present invention provides a hole-punching machine, comprising: a frame body, including a base and a guide part, the base includes at least one punched hole, the guide part includes at least one guide hole opposite to the at least one punched hole, a space is provided between the corresponding punched hole and the guide hole; an operating handle movably connected to the frame body; at least one punch driven by the operating handle to move in the guide hole and to enter and exit the punched hole, each punch including a first straight section, a second straight section and a gradually reducing section gradually reducing from the first straight section to the second straight section.

Each punch rod further comprises a gradually expanding section gradually expanding from the gradually expanding section to the second straight section.

The first straight section and the second straight section have the same outer diameter.

The first straight section has an extension size larger than the interval, and the tapered section can move to be positioned between the corresponding punched hole and the guide hole.

The tapered section includes a maximum outer diameter and a minimum outer diameter, the minimum outer diameter being 0.05mm to 3.00mm smaller than the maximum outer diameter.

The tapered section is necked down.

The tapered section forms an inclination angle relative to the first straight section, and the inclination angle is 5-30 degrees.

When the second straight section is located in the guide hole, the first straight section extends into the punched hole.

The first straight section of each punch includes a long edge and a short edge that pass completely over a punch hole, the long edge being closer to the punch hole than the short edge.

Each punch rod further comprises a gradually expanding section gradually expanding from the gradually expanding section to the second straight section; the first straight section and the second straight section are cylindrical and have the same outer diameter; the first straight section has an extension size larger than the interval, and the gradually-reduced section can be moved to be positioned between the corresponding punched hole and the guide hole; each guide hole comprises a flaring which is gradually expanded towards the punched hole; the reducing section comprises a maximum outer diameter and a minimum outer diameter, and the minimum outer diameter is 0.05mm to 3.00mm smaller than the maximum outer diameter; when the second straight section is positioned in the guide hole, the first straight section extends into the punched hole; the first straight section of each punch comprises a long edge and a short edge which can completely pass through the punched hole, and the long edge is close to the punched hole compared with the short edge; the guide part further comprises at least one pair of side parts, each side part is provided with a guide groove, the at least one punch is arranged in the guide grooves of the at least one pair of side parts in a sliding mode through at least one shaft piece, the bottom ends of the guide grooves of the pair of side parts are arranged in a high-low mode relative to the base, and the bottom ends of the guide grooves of the pair of side parts are respectively provided with enlarged parts with different radial sizes.

The invention has the beneficial effects that: the invention can ensure the collimation and the non-deflection of the punched hole, and the clamping problem does not occur after the punching.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a preferred embodiment of the present invention.

Fig. 3 and 4 are enlarged partial sectional views of a preferred embodiment of the present invention taken along a first direction.

Fig. 5 to 8 are schematic enlarged sectional views along a second direction according to a preferred embodiment of the present invention.

FIG. 9 is an enlarged view of a portion of a punch according to a preferred embodiment of the present invention.

The punching machine comprises a punching machine body 1, a punching machine body 10, a base 11, a punching hole 111, a guide part 12, a guide hole 121, a flaring 122, a side part 123, a guide groove 124, an expanding part 125, an operating handle 20, a punch 30, a first straight section 31, a long edge 311, a short edge 312, a second straight section 32, a tapered section 33, a tapered section 34, a tapered section 40, an elastic part 50, a shaft part 50, a distance d1, an extension d2, an object to be punched P1, a punched hole and an inclination angle theta.

Detailed Description

The following description is given by way of example only, and is not intended to limit the scope of the invention.

Referring to fig. 1 to 9, which illustrate a preferred embodiment of the present invention, a hole-punching machine 1 of the present invention includes a frame 10, an operating handle 20 and at least one punch 30.

The frame 10 includes a base 11 and a guide 12, the base 11 includes at least one punched hole 111, the guide 12 includes at least one guide hole 121 opposite to the at least one punched hole 111, and a distance d1 is provided between an opposite punched hole 111 and the guide hole 121 for placing at least one object P to be punched (such as paper, sheet or plate-like object, or the like). The operating handle 20 is movably connected (e.g., pivotally connected) to the frame 10; the at least one punch 30 is driven by the handle 20 to move relatively in the at least one guide hole 121 and enter and exit the at least one punched hole 111, each punch 30 includes a first straight section 31, a second straight section 32 and a tapered section 33 tapering from the first straight section 31 to the second straight section 32, preferably the first straight section 31 has an extension d2 larger than the distance d 1. Therefore, when the first straight section 31 punches the at least one object P to be punched and enters the punched hole 111, the first straight section 31 can be limited and guided by the guide hole 121 and the punched hole 111 (as shown in fig. 6), and the first straight section 31 does not skew and impact the edge of the punched hole 111. Preferably, when the second straight section 32 is located in the guide hole 121, the first straight section 31 extends into the punched hole 111, ensuring alignment and non-deflection of the punch 30. In addition, the tapered section 33 can reduce the contact with the at least one object P to be punched (especially in the case of the larger number of the at least one object P to be punched, as shown in fig. 7), and the punch 30 can be retracted without being caught by the at least one object P to be punched after punching.

In detail, the frame 10 includes a plurality of the guiding portions 12 and a plurality of the punches 30, each of the punches 30 further includes a gradually expanding section 34 gradually expanding from the gradually expanding section 33 to the second straight section 32, so as to avoid the object P to be punched from being caught and to guide and disperse the stress generated when the punch 30 punches. The first straight section 31 and the second straight section 32 are cylindrical and have the same outer diameter, however, the first straight section 31 and the second straight section 32 can have other shapes. At least one elastic member 40 is preferably further disposed between the handle 20 and the frame 10, and is automatically restored after the handle 20 is operated. The tapered section 33 is movable to be located between the opposite punch 111 and a guide hole 121, and the tapered section 33 is preferably tapered, so that after at least one object P to be punched is passed through the first straight section 31 to form a through hole P1, the tapered section 33 is located in the through hole P1, reducing friction and facilitating the retraction of the punch 30 (fig. 7). Preferably, the tapered section 33 forms an inclination angle θ with respect to the first straight section 31, and the inclination angle θ is 5 degrees to 30 degrees; the tapered section 33 includes a maximum outer diameter and a minimum outer diameter, the minimum outer diameter being 0.05mm to 3.00mm smaller than the maximum outer diameter. In addition, each guide hole 121 may include a flared end 122 that tapers toward a punch hole 111, which preferably guides the punch 30.

In the present embodiment, the first straight section 31 of each punch 30 includes a long blade 311 and a short blade 312 that can completely pass through one of the punch holes 111, so as to completely penetrate through the at least one object P to be punched; the long blade 311 is closer to the punch hole 111 than the short blade 312, and the long blade 311 and the short blade 312 are disposed at a higher level relative to the base 11, so as to effectively penetrate through the at least one object P to be punched in a labor-saving manner; the guiding portion 12 further comprises at least a pair of side portions 123, each side portion 123 is provided with a guiding groove 124, the at least one plunger 30 is slidably disposed in the guiding grooves 124 of the at least a pair of side portions 123 through at least one shaft 50, thereby stabilizing the actuation of each plunger 30; the bottom ends of the guiding slots 124 of each of the pair of side portions 123 are disposed at a high position relative to the base 11, and further, the bottom ends of the guiding slots 124 of each of the pair of side portions 123 have enlarged portions 125 with different radial dimensions, respectively, which is suitable for matching shaft members with different structural types.

Claims

1. A perforating machine is characterized in that: the method comprises the following steps:

the frame body comprises a base and a guide part, the base comprises at least one punched hole, the guide part comprises at least one guide hole opposite to the at least one punched hole, and a space is formed between the opposite punched hole and the guide hole;

an operating handle movably connected to the frame body;

at least one punch driven by the operating handle to move in the guide hole and to enter and exit the punched hole, each punch including a first straight section, a second straight section and a gradually reducing section gradually reducing from the first straight section to the second straight section.

2. The hole punch of claim 1, wherein: each punch rod further comprises a gradually expanding section gradually expanding from the gradually expanding section to the second straight section.

3. The hole punch of claim 1, wherein: the first straight section and the second straight section have the same outer diameter.

4. The hole punch of claim 1, wherein: the first straight section has an extension size larger than the interval, and the tapered section can move to be positioned between the corresponding punched hole and the guide hole.

5. The hole punch of claim 1, wherein: the tapered section includes a maximum outer diameter and a minimum outer diameter, the minimum outer diameter being 0.05mm to 3.00mm smaller than the maximum outer diameter.

6. The hole punch of claim 1, wherein: the tapered section is necked down.

7. The hole punch according to claim 6, wherein: the tapered section forms an inclination angle relative to the first straight section, and the inclination angle is 5-30 degrees.

8. The hole punch of claim 1, wherein: when the second straight section is located in the guide hole, the first straight section extends into the punched hole.

9. The hole punch of claim 1, wherein: the first straight section of each punch includes a long edge and a short edge that pass completely over a punch hole, the long edge being closer to the punch hole than the short edge.

10. The hole punch according to claim 7, wherein: each punch rod further comprises a gradually expanding section gradually expanding from the gradually expanding section to the second straight section; the first straight section and the second straight section are cylindrical and have the same outer diameter; the first straight section has an extension size larger than the interval, and the gradually-reduced section can be moved to be positioned between the corresponding punched hole and the guide hole; each guide hole comprises a flaring which is gradually expanded towards the punched hole; the reducing section comprises a maximum outer diameter and a minimum outer diameter, and the minimum outer diameter is 0.05mm to 3.00mm smaller than the maximum outer diameter; when the second straight section is positioned in the guide hole, the first straight section extends into the punched hole; the first straight section of each punch comprises a long edge and a short edge which can completely pass through the punched hole, and the long edge is close to the punched hole compared with the short edge; the guide part further comprises at least one pair of side parts, each side part is provided with a guide groove, the at least one punch is arranged in the guide grooves of the at least one pair of side parts in a sliding mode through at least one shaft piece, the bottom ends of the guide grooves of the pair of side parts are arranged in a high-low mode relative to the base, and the bottom ends of the guide grooves of the pair of side parts are respectively provided with enlarged parts with different radial sizes.