KR-20260064111-A - SWAGING MACHINE

KR20260064111AKR 20260064111 AKR20260064111 AKR 20260064111AKR-20260064111-A

Abstract

The present invention relates to a swaging machine used for forming a threaded portion on the end of a reinforcing bar, comprising: a mold including a lower mold that supports the end of the reinforcing bar that has reached a swaging position, and an upper mold that descends toward the lower mold to press the end of the reinforcing bar and then ascends in the opposite direction to release the pressurization; and a reinforcing bar rotation means that rotates the reinforcing bar at a predetermined angle while the upper mold has released the pressurization. Herein, the reinforcing bar rotation means comprises: a rotating body provided to penetrate the reinforcing bar and rotate around the reinforcing bar; a pair of gripping bodies installed on one surface of the rotating body to enable close movement and distance movement, wherein the gripping body grips the reinforcing bar during close movement and releases the gripping body during distance movement; and a pair of gripping cylinders fixed to one surface of the rotating body to move the pair of gripping bodies respectively. and a rotating cylinder that rotates the rotating body at the predetermined angle when the pair of gripping bodies grip the reinforcing bar, and rotates the rotating body in the opposite direction to return it to its original position when the pair of gripping bodies release the gripping.

Inventors

정세현
최경호
윤현기

Assignees

주식회사부원비엠에스

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (6)

In a swaging machine used to form threads on the ends of reinforcing bars, A mold comprising a lower mold that supports the end of the reinforcing bar that has reached the swaging position, and an upper mold that descends toward the lower mold to press the end of the reinforcing bar and then ascends in the opposite direction to release the pressurization; and A reinforcing bar rotation means for rotating the reinforcing bar at a predetermined angle while the upper mold releases the pressure; wherein The above reinforcing bar rotation means is, A rotating body configured to pass through the reinforcing bar and rotate around the reinforcing bar; A pair of gripping bodies installed on one surface of the above-mentioned rotating body to enable close movement and separate movement, wherein the gripping body grips the reinforcing bar during close movement and releases the gripping body during separate movement; A pair of gripping cylinders fixed to one surface of the above-mentioned rotating body and each moving the pair of gripping bodies; and A swaging machine comprising: a rotary cylinder that rotates the rotating body at the predetermined angle when the pair of gripping bodies grip the reinforcing bar, and rotates the rotating body in the opposite direction to return it to its original position when the pair of gripping bodies release the gripping.
In paragraph 1, The above pair of gripping bodies includes a left gripping body having gripping surfaces arranged along the longitudinal direction of the reinforcing bar and a right gripping body having gripping surfaces arranged along the longitudinal direction of the reinforcing bar so as to be positioned alternately with the gripping surfaces of the left gripping body. A swaging machine in which the gripping surfaces of the left gripping body are provided in a "V" shape that is recessed to the left, the gripping surfaces of the right gripping body are provided in a "V" shape that is recessed to the right, and when moving in close proximity, the gripping surfaces of the left gripping body and the gripping surfaces of the right gripping body partially overlap to press the reinforcing bar.
In paragraph 1, A swaging machine in which the cylinder rod of the above-mentioned rotary cylinder is coupled to a bracket fixed to the outer surface of the above-mentioned rotating body so as to rotate about a rotation axis parallel to the longitudinal direction of the reinforcing bar, and the cylinder body of the above-mentioned rotary cylinder is provided to rotate about a rotation axis parallel to the longitudinal direction of the reinforcing bar when the cylinder rod is extended or retracted.
In paragraph 1, A swaging machine further comprising: a stopping assembly installed at the front of the mold, opposite to the reinforcing bar rotation means with respect to the mold, and configured to stop the advancement of the reinforcing bar when the end of the reinforcing bar advancing toward the mold reaches the swaging position.
In paragraph 4, The above stopping assembly is a swaging machine configured to output a rebar stopping signal indicating when the advancement of the rebar is stopped.
In paragraph 4 or 5, The above stopping assembly is a swaging machine configured to prevent the advancement of the reinforcing bar at multiple locations.

Description

Swaging Machine The present invention relates to a swaging machine, and more specifically, to a swaging machine used to form a threaded portion for screw connection with a coupler at the end of a reinforcing bar. In reinforced concrete structures, reinforcing bars are used to compensate for the concrete's insufficient tensile strength. Since reinforcing bars are manufactured to specific lengths according to standards, they are generally connected to each other at construction sites to achieve the required length. It is known that couplers are used as a method to connect reinforcing bars. In this case, one end of one of two adjacent reinforcing bars is screwed into one end of the coupler, and the other end of the reinforcing bar is screwed into the opposite end of the coupler. Therefore, to connect reinforcing bars through a coupler, the process of forming the ends of each reinforcing bar into threaded sections must be performed beforehand. A technology for forming a threaded portion at the end of a reinforcing bar is disclosed in Registered Patent Publication No. 10-0820184 (Method for processing a threaded portion of a reinforcing bar). In this technology, a threaded portion is formed at the end of the reinforcing bar through a swaging process, a cutting process, and a rolling process. Additionally, Published Patent Publication No. 10-2014-0131853 (Device for processing threads of a reinforcing bar) discloses a swaging machine that performs the above swaging process. FIG. 1 is a side view of a swaging machine according to the present invention. Figure 2 shows the reinforcing bar rotation means illustrated in Figure 1 viewed from the rear. Figure 3 is a plan view of a pair of gripping bodies shown in Figure 2. Figure 4 is a plan view of the stopping assembly shown in Figure 1. Figure 5 shows the stopping assembly illustrated in Figure 1 viewed from the front. Figure 6 is a partial cross-sectional view of the stopping assembly shown in Figure 1. Figure 7 shows the end of a reinforcing bar processed by the swaging machine of Figure 1. Hereinafter, preferred embodiments of a swaging machine according to the present invention will be described in detail with reference to the drawings. Terms and words used below should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. The swaging machine (100) according to the present invention is intended to be used in a swaging process, which is one of several processes performed when forming a threaded portion on the end (12) of a reinforcing bar (10), and includes a mold (110) and a reinforcing bar rotation means (120) as shown in FIG. 1. The above mold (110) includes a lower mold (112) and an upper mold (114). The lower mold (112) is fixed to a frame (not shown) that forms the overall frame of the swaging machine (100) and has a roughly semicircular groove on its upper surface. The upper mold (114) is installed to be vertically movable on the frame and has a roughly semicircular groove on its lower surface. When the end (12) of the reinforcing bar (10) reaches the swaging position, it is supported by the lower mold (112) as shown in FIG. 1. In this state, the upper mold (114) is lowered by a pressing means (not shown) installed on the frame to press the end (12) of the reinforcing bar (10), and then rises in the opposite direction to release the pressure. When the upper mold (114) rises, the reinforcing bar (10) rotates by a predetermined angle, and then the upper mold (114) lowers and rises again. When the lowering and rising of the upper mold (114) and the rotation of the reinforcing bar (10) are repeated multiple times in this manner, the end (12) of the reinforcing bar (10) is swaged in a form where the nodes (10a) and ribs (10b) are pressed, as shown in FIG. 7. The above-mentioned rebar rotation means (120) is for rotating the rebar (10) whenever the upper mold (114) rises, and as shown in FIGS. 1 to 3, it includes a rotating body (122), a pair of gripping bodies (124, 126), a pair of gripping cylinders (134, 136), and a rotating cylinder (140). The above-mentioned rotating body (122) includes a rotating drum (122a) and a fixed plate (122b). The rotating drum (122a) is coupled to a support member (121) so that it can rotate about an axis parallel to the longitudinal direction of the reinforcing bar (10). The support member (121) is fixed to the frame. The fixed plate (122b) is fixed to the back of the rotating drum (122a). The rotating drum (122a), the fixed plate (122b), and the support member (121) are arranged to pass through the reinforcing bar (10). The above pair of gripping bodies (124, 126) includes a left gripping body (124) and a right gripping body (126), and the above pair of gripping cylinders (1