KR-102962372-B1 - STEEL BALL FEEDING APPARATUS

KR102962372B1KR 102962372 B1KR102962372 B1KR 102962372B1KR-102962372-B1

Abstract

The automatic steel ball feeding cart device of the present invention comprises a storage unit for storing metal materials, a discharge unit connected to the storage unit and discharging metal materials through a rotatable screw feeder, a conveying unit that transports metal materials discharged from the discharge unit while adsorbing and fixing them using magnetic force, side walls and a storage unit disposed on both sides of the conveying unit to prevent lateral deviation of metal materials, and a main body unit that integrally supports the discharge unit and the conveying unit and enables movement. Accordingly, the present invention can eliminate physical burden on workers, improve work safety, and maximize production efficiency.

Inventors

박지수
노휘건
김태겸

Dates

Publication Date: 20260508
Application Date: 20251125

Claims (11)

Storage unit for storing metal; A discharge unit connected to and arranged with the above storage unit, and discharging the metal material through a rotatable screw feeder; A transfer unit that transports metal discharged from the above discharge unit while adsorbing and fixing it using magnetic force; Side walls disposed on both sides of the above-mentioned conveying unit to prevent lateral deviation of the metal object; A vibration unit disposed on the back surface of the above storage unit to generate vibration, operating in an intermittent pulse manner; A main body portion that integrally supports the storage portion, the discharge portion, and the transfer portion and enables movement; and A moving part attached to the lower part of the main body and enabling the main body to move; is included. The above discharge portion includes a hole for discharging the metal object to the outside, and a pair of locking projections are formed on both sides of the hole, protruding toward each other. The above screw feeder is composed of a horizontal screw, with both ends mounted respectively on the above pair of locking projections, and The discharge amount of the metal is controlled according to the rotational speed of the screw feeder, and A steel ball insertion device characterized by the above-mentioned moving part including an obstacle detection sensor.
In paragraph 1, A steel ball insertion device characterized by the storage portion having a bottom surface that forms a V-shaped or trapezoidal cross-section and includes an angle of inclination so that metal flows toward the center or the discharge portion.
In paragraph 1, A steel ball feeding device characterized by the above-mentioned vibration unit including a micro vibration motor or a pulse-type hammer knocker, preventing metal material from clumping or clogging within the discharge unit and allowing it to be dispersed and flow to the conveying unit.
In paragraph 1, A steel ball feeding device characterized by the above-mentioned conveying part having a magnetic part disposed inside or at the bottom to adsorb and fix the metal object to the belt surface, and being configured so that the inclination angle can be adjusted within the range of 20° to 45°.
In paragraph 1, A steel ball feeding device further comprising a plurality of protrusions formed at regular intervals on the surface of the conveying part to prevent the steel ball from sliding.
In paragraph 5, A steel ball insertion device characterized in that the above-mentioned protrusion is formed in at least one shape among a step, a hook-shaped, a chevron, and a pocket.
In paragraph 5, A steel ball input device characterized by the above-mentioned protrusion being configured in an interchangeable modular manner so as to be selectively positioned according to the size and shape of the steel ball, and having an elastic lip formed at one end of the protrusion to contain fine powder, such as iron powder, without it flowing down.
In paragraph 1, A steel ball feeding device further comprising an auxiliary conveying unit arranged parallel to and spaced apart above the conveying unit, which conveys the metal object while gripping it in a pinch manner.
In paragraph 8, A steel ball feeding device characterized in that the above auxiliary conveying part has a gap with the above conveying part of 0.5 to 1.2 times the diameter of the metal object.
In paragraph 1, The above-described main body is a steel ball insertion device that includes a handle portion at one end that can be manually operated by a worker.
In paragraph 1, A steel ball feeding device characterized in that the surface of the conveying part comprises NBR or urethane material, and a fine rib texture or sand texture is formed to increase the coefficient of friction with the metal object.

Description

Steel Ball Feeding Apparatus The present invention relates to a steel ball feeding device, and in particular, to a steel ball feeding device that can reduce the physical burden on a worker and improve work safety and efficiency by storing and discharging steel balls in a storage section having a slope on the bottom surface and feeding the steel balls through a conveying section without scattering. In conventional metalworking industries, a manual method is generally used in which workers place steel balls used in processes such as shot blasting into sacks, transport them on a cart, and then lift and pour them directly into a waist-height input opening. This method places a severe burden on the workers' backs and shoulders as they repeatedly lift sacks of heavy steel balls weighing tens of kilograms, and there is a constant risk of musculoskeletal disorders and industrial accidents caused by accumulated fatigue. Additionally, there were problems such as reduced work efficiency and increased risk of workplace safety accidents due to steel balls scattering or falling during the input process. As prior art, Korean Registered Patent No. 10-0787529 discloses a shot ball supply device using magnets; however, due to its fixed structure, it has the problem of lacking flexibility in the working position and having limited field applicability. FIG. 1 is a perspective view schematically showing a steel ball feeding device according to one embodiment of the present invention. Figure 2 is a cross-sectional view along I-I' of Figure 1. Figure 3 is an enlarged perspective view showing an example of part N of Figure 2. FIG. 4 is a cross-sectional view schematically showing a transfer unit according to one embodiment of the present invention. FIGS. 5A and FIGS. 5B are perspective views schematically showing the side of a transfer unit according to various embodiments of the present invention. FIG. 6 is a block diagram briefly illustrating the configuration of a steel ball insertion device according to one embodiment of the present invention. FIG. 7 is a perspective view schematically showing a transfer unit according to another embodiment of the present invention. FIG. 8 is a perspective view schematically showing a transfer unit according to another embodiment of the present invention. FIG. 9 is a cross-sectional view schematically showing a steel ball feeding device according to another embodiment of the present invention. FIG. 10 is a block diagram briefly illustrating the configuration of a steel ball feeding device according to another embodiment of the present invention. In order to clarify the technical concept of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. In describing the present invention, detailed descriptions of related known functions or components will be omitted if it is determined that such detailed descriptions may unnecessarily obscure the essence of the present invention. For components having substantially the same functional configuration among the drawings, the same reference numerals and symbols have been assigned as much as possible, even if they are shown in different drawings. For convenience of explanation, devices and methods will be described together where necessary. FIG. 1 is a schematic perspective view showing a steel ball feeding device according to one embodiment of the present invention, FIG. 2 is a cross-sectional view along I-I' of FIG. 1, FIG. 3 is an enlarged perspective view showing an example of part N of FIG. 2, FIG. 4 is a schematic cross-sectional view showing a conveying unit according to one embodiment of the present invention, and FIG. 5a and FIG. 5b are perspective views showing the side of the conveying unit according to various embodiments of the present invention. First, referring to FIGS. 1 and 2, an automatic steel ball feeding cart device (100) according to one embodiment of the present invention includes a storage unit (110), a discharge unit (120), a transfer unit (130), a main body unit (150), and a moving unit (160). The storage section (110) can store metal objects such as steel balls or iron powder. The storage section (110) may have a liner made of UHMW-PE (ultra-high molecular weight polyethylene) or PTFE (Teflon) placed on the bottom surface (111). Accordingly, the storage section (110) can minimize the coefficient of friction and induce a natural downward flow due to the weight of the metal objects. The storage section (110) may have a V-shaped or trapezoidal cross-section on its bottom surface (111). Accordingly, the storage section (110) may include a fine angle of inclination on its bottom surface (111) so that the metal material naturally flows toward the center or the discharge section (120). Additionally, due to the inclined structure of the bottom surface (111) of the storage section (110), the metal material naturally moves downward in the direction of