CN203807486U

CN203807486U - Novel leather piercing punch

Info

Publication number: CN203807486U
Application number: CN201420259130.2U
Authority: CN
Inventors: 边财浪
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-07
Filing date: 2014-05-07
Publication date: 2014-09-03
Anticipated expiration: 2024-05-07

Abstract

The utility model discloses a novel leather piercing punch comprising a punch head and a punch rod. The lower end of the punch head is provided with a socket hole. The bottom of the socket hole is provided with a square hole penetrating the top end of the punch head. The lower end of the punch rod is provided with an extension portion in a tubular shape. The inner wall of the extension portion is provided with a protrusion in a circular shape; the protrusion is fastened into a circular groove arranged in the outer wall of the punch head. The punch rod is provided with a threaded hole penetrating the bottom of the punch rod. A bolt is screwed inside the threaded hole; a guide rod in a square shape is welded on the lower end face of the bolt; the guide rod is inserted into the square hole of the punch head. The novel leather piercing punch has the advantages that residual cuttings remaining in the socket hole are ejected out by the guide rod inside the punch and the problem that punching fails due to jamming of the socket hole of the punch is avoided.

Description

A kind of novel leather punching pin

Technical field:

The utility model relates to the technical field of drilling tool, more specifically to a kind of novel leather punching pin.

Background technology:

Leather packing sheet is mainly used in sealing-duct and container at present, and on leather packing sheet, must reserve the open holes of the web members such as bolt.Thereby need to use punching pin to punch, the structure of existing punching pin is generally right cylinder, and offer the big or small slotted eye of required punching in cylindrical bottom on leather packing sheet.But the blank after its undershoot excision can be stayed the inside of slotted eye in use, takes out cumbersome.

Utility model content:

The purpose of this utility model is exactly the deficiency for prior art, and a kind of novel leather punching pin is provided, and is convenient to the taking-up of blank after leather punched hole.

Technology solution of the present utility model is as follows:

A kind of novel leather punching pin, comprise drift and jumper bar, the lower end of drift forms slotted eye, on the bottom surface of slotted eye, form the square opening that runs through drift top end face, the lower end of jumper bar forms extension cylindraceous, on the inner side-wall of extension, form annular boss, boss holding is in annular recesses, annular recesses is molded on the outer side wall of drift, on described jumper bar, form the threaded hole that runs through jumper bar bottom surface, in threaded hole, be bolted with double-screw bolt, be welded with square tail rod on the lower surface of double-screw bolt, tail rod sleeve is in the square opening of drift.

On the top end face of described drift, form counterbore, square opening is positioned at the center of counterbore, described counter bore hole diameters is greater than the catercorner length of square opening, and the tip diameter of threaded hole is greater than the catercorner length of tail rod shape of cross section, and the shape of cross section of tail rod is identical with the shape of square opening.

The length of described tail rod is not less than the length of drift.

The beneficial effects of the utility model are:

It provides a kind of leather punching pin of novel texture, ejects the blank that remains in punching pin slotted eye inside by the tail rod of punching pin inside, can not carry out punching thereby can not make the slotted eye of punching pin block.

Brief description of the drawings:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation that partly cuts open of the present utility model;

Fig. 3 is the TV structure schematic diagram that drift of the present utility model is looked up.

In figure: 1, drift; 2, jumper bar; 3, tail rod; 4, double-screw bolt; 11, slotted eye; 12, counterbore; 13, square opening; 14, annular recesses; 21, extension; 22, boss; 23, threaded hole.

Embodiment:

Embodiment: see shown in Fig. 1 to 3, a kind of novel leather punching pin, comprise drift 1 and jumper bar 2, the lower end of drift 1 forms slotted eye 11, on the bottom surface of slotted eye 11, form the square opening 13 that runs through drift 1 top end face, the lower end of jumper bar 2 forms extension 21 cylindraceous, on the inner side-wall of extension 21, form annular boss 22, boss 22 holdings are in annular recesses 14, annular recesses 14 is molded on the outer side wall of drift 1, on described jumper bar 2, form the threaded hole 23 that runs through jumper bar 2 bottom surfaces, in threaded hole 23, be bolted with double-screw bolt 4, on the lower surface of double-screw bolt 4, be welded with square tail rod 3, tail rod 3 sleeves are in the square opening 13 of drift 1.

On the top end face of described drift 1, form counterbore 12, square opening 13 is positioned at counterbore 12 center, described counterbore 12 diameters are greater than the catercorner length of square opening 13, the tip diameter of threaded hole 23 is greater than the catercorner length of tail rod 3 shape of cross sections, and the shape of cross section of tail rod 3 is identical with the shape of square opening 13.

The length of described tail rod 3 is not less than the length of drift 1.

Principle of work: use-pattern of the present utility model is: hand held punch 1, rotation jumper bar 2 impels tail rod 3 to move down in drift 1 square opening 13, thereby tail rod 3 will remain in drift 1 slotted eye 11, interior blank will eject, and then at reverse rotation jumper bar 2, tail rod 3 be resetted.Thereby can not make the slotted eye of punching pin block and cause carrying out punching in the time using punching pin to rush leather hole.

Claims

1. a novel leather punching pin, comprise drift (1) and jumper bar (2), the lower end of drift (1) forms slotted eye (11), on the bottom surface of slotted eye (11), form the square opening (13) that runs through drift (1) top end face, it is characterized in that: the lower end of jumper bar (2) forms extension cylindraceous (21), on the inner side-wall of extension (21), form annular boss (22), boss (22) holding is in annular recesses (14), annular recesses (14) is molded on the outer side wall of drift (1), on described jumper bar (2), form the threaded hole (23) that runs through jumper bar (2) bottom surface, in threaded hole (23), be bolted with double-screw bolt (4), on the lower surface of double-screw bolt (4), be welded with square tail rod (3), tail rod (3) sleeve is in the square opening (13) of drift (1).

2. a kind of novel leather punching pin according to claim 1, it is characterized in that: on the top end face of described drift (1), form counterbore (12), square opening (13) is positioned at the center of counterbore (12), described counterbore (12) diameter is greater than the catercorner length of square opening (13), the tip diameter of threaded hole (23) is greater than the catercorner length of tail rod (3) shape of cross section, and the shape of cross section of tail rod (3) is identical with the shape of square opening (13).

3. a kind of novel leather punching pin according to claim 1, is characterized in that: the length of described tail rod (3) is not less than the length of drift (1).