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KR-20260067680-A - SCREW MAKING APPARATUS HAVING PUNCH FORMING PART WITH DAMAGE PREVENTION STRUCTURE

KR20260067680AKR 20260067680 AKR20260067680 AKR 20260067680AKR-20260067680-A

Abstract

A screw head manufacturing device having a punch forming section with a damage prevention structure is disclosed. The screw head manufacturing device having a punch forming section with a damage prevention structure according to the present invention comprises: a punch fixing block for installing a first punch and a second punch in the punch forming section; a punch holder having an operating hole formed inside for the first punch to be inserted and slide along the longitudinal direction, a seating end formed at one end for seating around the front end of the punch fixing block, and inserted into the installation hole so that the seating end is seated around the installation hole; and a spring installed inside the operating hole to elastically support the first punch. A punch support member comprising: an insertion support member formed to be inserted into the interior of the spring; a striking pin coupled to be integrally connected to the center of one end of the insertion support member; a spring seating member formed stepwise on the other side of the insertion support member, having a spring seating surface on which one end of the spring is seated; and an insertion coupling member formed stepwise on one side of the spring seating member, having a contact surface for the end of the punch holder to be in contact with, and inserted into the installation hole, such that the spring seating member is inserted into the operating hole and the insertion coupling member is inserted into the installation hole, thereby being coupled to the punch holder and the punch fixing block; and an installation block coupled to the rear end of the punch fixing block to connect the punch support member to the punch fixing block.

Inventors

  • 김선효

Assignees

  • 김선효

Dates

Publication Date
20260513
Application Date
20241106

Claims (3)

  1. A screw head manufacturing device comprising: cutting a supplied wire to a predetermined length using a cutting block to form a workpiece, then transferring it to a first discharge pin provided in a die block using a cutting transfer device; pushing the workpiece inserted into the cutting hole of the cutting block with the first discharge pin so as to face the cutting block and inserting it into the pin operating hole of a first punch provided in a punch fixing block of a punch forming part; moving the workpiece located within the pin operating hole to a front of a forming block provided in the die block, then moving the punch fixing block toward the die block and inserting it into the forming hole of the forming block with a striking pin within the pin operating hole while simultaneously striking one end of the workpiece to form a part of a screw head; and as the punch fixing block moves toward the cutting block, a second punch provided in the punch fixing block strikes a part of the screw head of the workpiece a second time to form the screw head, and when the forming of the screw head is completed, pushing the workpiece located within the forming hole with a second discharge pin to discharge it. The above punch forming part is, The punch fixing block for installing the first punch and the second punch; A punch holder having an operating hole formed internally for the first punch to be inserted and slide along the longitudinal direction, a seating end formed at one end for being seated around the front end mounting hole of the punch fixing block, and inserted into the mounting hole so that the seating end is seated around the mounting hole; A spring installed inside the above operating hole to elastically support the first punch; A punch support member having an insertion support member formed to be inserted into the interior of the spring, a support pin integrally coupled to the center of one end of the insertion support member and contacting the end of the striking pin when the striking pin strikes the workpiece, a spring seating member formed stepwise on the other side of the insertion support member having a spring seating surface on which one end of the spring is seated, and an insertion coupling member formed stepwise on one side of the spring seating member to be inserted into the installation hole having a contact surface for the end of the punch holder to be in contact with, wherein the spring seating member is inserted into the operating hole and the insertion coupling member is inserted into the installation hole, thereby being coupled to the punch holder and the punch fixing block: and Characterized by including an installation block coupled to the rear end of the punch fixing block to connect the punch support to the punch fixing block. Screw head manufacturing device having a punch forming section with a breakage prevention structure.
  2. In paragraph 1, Inside the above operating hole, Characterized by having an internal locking groove formed to prevent the first punch from coming off, and an external locking projection formed on the outer surface of one end of the first punch to engage with the internal locking groove when inserted into the operating hole. Screw head manufacturing device having a punch forming section with a breakage prevention structure.
  3. In paragraph 1, The above spring is, The insertion support member is inserted into the interior of the spring, and while one end of the spring is seated on the spring seating surface, the spring seating member is inserted into the operating hole and the end of the punch holder is in close contact with the contact surface, thereby being supported between the insertion support member and the inner surface of the operating hole. Screw head manufacturing device having a punch forming section with a breakage prevention structure.

Description

Screw head manufacturing apparatus having a punch forming part with damage prevention structure The present invention relates to a screw head manufacturing device having a punch forming section with a breakage prevention structure, and more specifically, to a screw head manufacturing device having a punch forming section with a breakage prevention structure that can prevent damage to a punch support by a striking pin striking one end of a workpiece, and can prevent damage caused by the movement of a spring elastically supporting the punch by preventing the movement of the spring. Generally, small screws are manufactured by screw head manufacturing devices and screw manufacturing devices. To look at it more specifically, the process involves feeding a wire material of a certain length into a screw head manufacturing device, cutting it to the required length of the screw, then striking one end of the wire material cut to a predetermined length to form the screw head, discharging it to the outside, and forming screw threads on the screw body in a separate screw device. Various prior art technologies exist for the aforementioned screw head manufacturing device. As prior art, Korean Registered Patent No. 10-0281572 (Publication Date: Feb. 15, 2001) discloses a screw head manufacturing device. In the process of manufacturing small screws, this screw head manufacturing device could cut a wire material to a certain length and simultaneously form a straight or cross-shaped adjustment groove on the screw head and the screw head portion. As another prior art, Korean Patent Publication No. 10-2001-110515 (Publication Date: Dec. 13, 2001) discloses a method for forming a screw head. The screw head forming method allows for forming a screw head portion by striking a workpiece with a primary forming punch to perform primary forming, and then striking it with a secondary forming punch to perform secondary forming. However, screw head forming devices (or manufacturing devices) of the aforementioned structure had a problem in which damage to the punch and the punch support block occurred due to interference between the punch striking the workpiece and the striking pin inside the punch. In other words, conventional screw head manufacturing devices had a problem in which the punch support block supporting the striking pin broke when striking the workpiece because the striking pin was not fixed. In addition, there was a problem in which the punch support block was damaged by the movement of the spring due to the gap occurring between the spring that elastically supports the punch and the punch support block. FIG. 1 is a partially exploded perspective view illustrating the punch forming part of a screw head manufacturing device according to the present invention. FIG. 2 is a partially enlarged cross-sectional view for explaining a screw head manufacturing device having a punch forming part of a breakage prevention structure according to the present invention to which the punch forming part illustrated in FIG. 1 is applied. FIG. 3 is a partially enlarged cross-sectional view for explaining a screw head manufacturing device having a punch forming part of a breakage prevention structure according to the present invention to which the punch forming part illustrated in FIG. 1 is applied. FIGS. 4 and FIGS. 5 are partially enlarged cross-sectional views to explain the operation of the screw head manufacturing device shown in FIG. 1. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention. In this specification, the terms used are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used in this specification, 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components to the mentioned components. In this specification, when a component is described as being "connected" to another component, it should be understood that it may be directly connected to the other component, or that there may be other components in between. On the other hand, when a component is described as being "directly connected" to another component, it should be understood that there are no other components in between. Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise. Spatially relative terms such as "below," "be