Automatic scrap discharge system

Abstract

The present invention relates to an automatic scrap discharge system configured to more effectively discharge mold scrap discharged from a press device without a discharge load by using a plurality of discharge chutes which undergo overall wave-like motion (wave-like motion or undulating motion) while being raised and lowered by an elevating means, the automatic scrap discharge system comprising: a plurality of discharge chutes (2) each having a bottom part (8); vertical parts (9, 10) bent upward at a predetermined height on the front and rear surfaces of the bottom part (8); reinforcing members (17, 18) fixed to the outer surfaces of the vertical parts (9, 10) and having outward shaft pins (13, 14) formed thereon; an upper end part of a U-shaped support member (12) axially installed on the outward shaft pins (13, 14) by means of bearings (19, 20); and a rod (16) of an elevating cylinder (15) vertically installed at the central lower part of the support member (12). The bottom part (8) may have any one of a semi-circular shape, a semi-elliptical shape, a semi-parabolic shape, and a semi-elliptical parabolic shape, and the plurality of discharge chutes (2) have a stepped part (11) formed by overlapping and connecting two to eight piece chutes having the bottom part (8) and the opposing vertical parts (9, 10), and may have a slope inclined such that the frontmost discharge chute (2) is positioned higher, and the rearmost discharge chute in which a discharge port (3) is located is positioned lower.

Description

Automatic scrap discharge system

[0001] The present invention relates to an automatic scrap discharge system configured to discharge mold scrap discharged from a press machine more effectively without discharge load by using a plurality of discharge chutes that move in a wave motion (wave motion or wave-like motion) as a whole while being raised and lowered by an elevating means.

[0002] Typically, a lower mold is installed on the bed of a press machine, and an upper mold is installed directly above the lower mold. When a press material (metal sheet, etc.) is fed into the lower mold, the upper mold is lowered by an elevating means to press the press material and perform forming (plastic processing) by bending, compressing, or shearing it. Scrap is generated during this process.

[0003] Since the above scrap must be discharged quickly and continuously outside the mold so as not to interfere with the press forming operation, a scrap discharge device (or scrap discharge means) is installed around the press to discharge the scrap generated during the forming process.

[0004] The above scrap discharge device moves and freely falls scrap to collect it in a collection bin and then process it, or discharges it along a ramp with a predetermined slope.

[0005] In the case of the above ramp, since it is installed between presses with narrow spacing or at the rear of the press, the installation space is also narrow, so it is difficult to secure the slope required for scrap discharge, which limits installation. Accordingly, most of them are configured to vibrate the ramp using a vibration device to force the scrap to be discharged along the slope, or to force the scrap to be discharged using a reciprocating device, or to discharge the scrap by installing the vibration device and the reciprocating device in parallel around the press. However, most of them have low scrap discharge efficiency, generate a scrap discharge load, which not only lowers productivity, but also threatens the safety of workers assisting with scrap discharge, etc., and there are various problems.

[0006] The problem to be solved by the present invention is to provide an automatic scrap discharge system that can discharge mold scrap discharged from a press machine more effectively without discharge load by using a plurality of discharge chutes that move in a wave motion (wave motion or wave-like motion) while being raised and lowered by an elevating means.

[0007] The present invention relates to an automatic scrap discharge system, comprising: a plurality of discharge chutes having a bottom; a vertical portion that is bent upward at a predetermined height on the front and rear surfaces of the bottom portion; a reinforcing member that is fixed to the outer surface of the vertical portion and has an outwardly facing axial pin formed thereon; an upper portion of a "∪"-shaped support member that is axially installed as a bearing on the outwardly facing axial pin; and a rod of an elevation cylinder that is vertically installed at the lower center of the support member (12), wherein the plurality of discharge chutes are connected in a row while being supported by being placed on the ends of other adjacent discharge chutes, and can be configured to perform a wave motion as a whole while being raised and lowered by their respective elevation cylinders.

[0008] The above bottom portion may be any one of a semicircular shape, a semi-elliptical shape, a semi-parabolic shape, or a semi-elliptical parabolic shape.

[0009] A plurality of ball plungers are installed at predetermined intervals at the ends of the above discharge chute so that the ends of adjacent discharge chutes can be placed on each other and supported by point contact.

[0010] The above ball plunger may be characterized in that an upwardly open spring chamber is formed inside a main body having a screw portion of a predetermined pitch formed on an outer surface thereof, a spring is inserted and installed in the spring chamber, and a ball bearing supported upward by the spring on the upper portion of the spring protrudes partially outside the main body to perform rolling motion.

[0011] The above-mentioned plurality of discharge chutes may be characterized by having 2 to 8 piece chutes having a bottom portion and an opposing vertical portion overlapped and connected to form a step portion.

[0012] The above plurality of discharge chutes may be characterized by having an inclined slope in which the frontmost discharge chutes are located high and the rearmost discharge chutes are located low.

[0013] The above inclination can be 10 to 40°.

[0014] The above-mentioned outward-facing pin can be configured to be biased toward one side of the discharge chute so that the discharge chute can be easily tilted.

[0015] The upper portion of the above vertical portion further includes an upward protrusion bent outward at an angle of 10 to 45 degrees.

[0016] It further includes a closing plate fixed to the leading end of the above-mentioned leading discharge chute.

[0017] The above plurality of discharge chutes may be linear or curved so as to avoid obstacles.

[0018] It further includes a scrap discharge hopper installed at the above discharge port and receiving scrap discharged by the discharge chute and discharging it outside the space where the press machine is installed.

[0019] The scrap automatic discharge system (1) of the present invention has the effect of achieving a desirable press operation because scrap (S) that is dropped (input) through the ramp of the scrap discharge device is quickly and effectively discharged to the discharge port (3) without discharge load along the discharge chute (2) that moves in waves by each of the lifting cylinders (15).

[0020] Since the cross-sectional shape of the bottom part (8) of the discharge chute (2) of the present invention is a semicircle, a semi-ellipse, a semi-paraboloid, or a semi-elliptic paraboloid, even if oil such as drawing oil is applied to the surface or the surface and back surface of the scrap (S), contact or absorption between the scrap (S) and the bottom part (8) is prevented, so there is an effect of not affecting the movement and discharge of the scrap (S).

[0021] The present invention has a plurality of ball plungers (30) installed on the portion where the end of the discharge chute (2) is supported and placed, so that adjacent discharge chute (2) come into point contact with each other, thereby preventing surface contact or friction, thereby preventing shortening of the lifespan of the discharge chute (2) and noise generation, and also has the effect of achieving smooth wave motion.

[0022] The automatic scrap discharge system (1) of the present invention can smoothly discharge all scraps generated when forming press materials regardless of their size, thereby improving productivity.

[0023] The present invention is a very useful invention that has the effect of protecting the safety of workers in relation to the discharge of scrap generated during press work.

[0024] Figure 1: A perspective view illustrating an example of the present invention.

[0025] Figure 2: A plan view illustrating an example of the present invention.

[0026] Figure 3: A front view illustrating an example of the present invention.

[0027] Figure 4: A plan view showing an example of a state of use of the present invention.

[0028] Figure 5: Front view showing another example of the present invention.

[0029] Figure 6: A perspective view illustrating a main body of the present invention as an example.

[0030] Figure 7: A perspective view of a tip end showing an example of the present invention.

[0031] Figure 8: A cross-sectional view of a main body illustrating an example of the present invention.

[0032] Figure 9: A cross-sectional view of a biased state of a shaft pin illustrated as an example of the present invention.

[0033] Figure 10: A cross-sectional view of a ball plunger according to an example of the present invention.

[0034] Figure 11: A cross-sectional view of a shaft pin portion of an exhaust chute according to an example of the present invention.

[0035] Figure 12: A cross-sectional view of an exhaust chute partially raised as an example of the present invention.

[0036] Figure 13: A cross-sectional view of an exhaust chute fully raised as an example of the present invention.

[0037] Figure 14: A cross-sectional view of a state in which a plurality of discharge chutes are connected and supported as an example of the present invention.

[0038] Figure 15: A cross-sectional view of a plurality of discharge chutes connected in an inclined state as an example of the present invention.

[0039] Figure 16: A plan view of another embodiment of an automatic scrap discharge system configured to be installed to avoid obstacles in the present invention.

[0040] Figure 17: A perspective view of another embodiment of an automatic scrap discharge system configured to be installed to avoid obstacles in the present invention.

[0041] Figure 18: A cross-sectional view of a scrap discharge state according to an example of the present invention, showing a state in which scrap is introduced into the first discharge chute.

[0042] Figure 19: A cross-sectional view of a scrap discharge state according to an example of the present invention, in which the scrap has moved to the third discharge chute.

[0043] Figure 20: A cross-sectional view of a scrap discharge state according to an example of the present invention, in which the scrap rises together with the third discharge chute.

[0044] Figure 21: A cross-sectional view of a scrap discharge state according to an example of the present invention, showing the scrap having moved to the fifth discharge chute.

[0045] Figure 22: A cross-sectional view of a scrap discharge state according to an example of the present invention, in which the scrap rises together with the fifth discharge chute.

[0046] Figure 23: A cross-sectional view of a scrap discharge state according to an example of the present invention, showing the scrap having moved to the seventh discharge chute.

[0047] Figure 24: A cross-sectional view of a scrap discharge state according to an example of the present invention, in which the scrap rises together with the seventh discharge chute.

[0048] Figure 25: A cross-sectional view of a scrap discharge state according to an example of the present invention, showing a state in which scrap is discharged through the discharge port of the 8th discharge chute.

[0049] Figure 26: A side cross-sectional view of a scrap discharge hopper according to an example of the present invention.

[0050] <Explanation of symbols>

[0051] (1)--Automatic scrap discharge system

[0052] (2)(21)(22)(23)(24)(25)(26)(27)(28)--Exhaust chute

[0053] (2a)(2b)(2c)(2d)--Piece suit (3)--Exhaust port (Exhaust port)

[0054] (4)--Press machine (5)--Material transport device

[0055] (5a)--Material supply device (5b)--Material discharge device

[0056] (6)--Lower mold (7)--Ramp

[0057] (8)--bottom (9)(10)--vertical

[0058] (9a)(10a)--Upper part (11)--Single part

[0059] (12)--Support member (13)(14)--Axial pin

[0060] (15)(151)(152)(153)(154)(155)(156)(157)(158)--Lifting cylinder

[0061] (16)(16a)--Elevating cylinder rod (17)(18)--Reinforcing member

[0062] (19)(20)--Bearing (21a)--Finishing plate

[0063] (29)--Frame (30)--Ball plunger

[0064] (31)--Screw (32)--Main body

[0065] (33)--Spring room (34)--Spring

[0066] (35)--Ball bearing (36)--Screw hole

[0067] (37)--Reinforcement plate (50)--Obstacle

[0068] (150)--Landholder (154a)~(158a)--2-stage lifting cylinder

[0069] (θ)(θ2)--slope (angle) (S)--scrap

[0070] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. In describing the embodiments of the present invention, identical components in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related known structures or functions are omitted so as not to obscure the gist of the present invention. In addition, matters expressed in the attached drawings are schematic drawings for easy explanation of the embodiments of the present invention, and may differ from the form actually implemented.

[0071] FIG. 1 is a perspective view of an automatic scrap discharge system (1) illustrated as an example of the present invention, and FIG. 2 is a front view thereof, in which a plurality of discharge chutes (2) having a predetermined size are installed in a row and connected, and are configured to perform a wave motion (wave motion or wave-like motion) as a whole while being raised and lowered by their respective lifting means (raising cylinders), so that a plurality of scraps (S) discharged from a scrap discharge device of a press (4) are configured to be effectively discharged while quickly moving to a discharge port (3) without a discharge load by the wave motion when fed into the discharge chutes (2).

[0072] The above-mentioned scrap automatic discharge system (1) is installed at the lower end of the ramp (7) of the scrap discharge device (6) installed on one side of the lower mold (5) of the press machine (4) installed at a predetermined interval as shown in FIG. 4 or at the rear end (or one side) of the lower mold (5), and receives scrap (S) that is discharged by sliding or dropping along the ramp (7) and moves and discharges it quickly and effectively. The discharge end of the ramp (7) of the scrap discharge device is arranged or configured to be located above the discharge chute (2), so that the scrap (S) that is discharged by dropping through the ramp (7) naturally flows in (or is injected) into the discharge chute (2). 5a of FIG. 4 is a material supply device, 5 is a material transport device, and 5b is a material discharge device.

[0073] The present invention further includes a scrap discharge hopper (100) that is installed at the discharge port (3) of the scrap automatic discharge system (1) and receives scrap (S) discharged by the discharge chute (2) and discharges it outside the space where the press machine (4) is installed.

[0074] The discharge chute (2) of the present invention has a predetermined width and length so that scrap (S) freely falling through the ramp (7) of the scrap discharge device (6) can be introduced (input) and settled, and also has a bottom part (8) in the shape of a semicircle, a semi-ellipse, a semi-paraboloid, or a semi-elliptic paraboloid that is open upward.

[0075] On the front and rear sides of the above-mentioned bottom part (8), vertical parts (9) and (10) of a predetermined height are bent upward so that scrap (S) falling through the ramp (7) is effectively introduced into the bottom part (8) of the discharge chute (2), and even if oil such as drawing oil is applied to the surface or the surface and back surface of the scrap (S), the cross-sectional shape of the bottom part (8) is a semicircle, a semi-ellipse, a semi-paraboloid, or a semi-elliptic paraboloid, so that contact or absorption between the scrap (S) and the bottom part (8) is prevented, and thus the movement and discharge of the scrap (S) are not affected.

[0076] In the present invention, it is preferable to configure the upper surface of the bottom portion (8) through which the scrap (S) passes to significantly reduce resistance and prevent friction and wear. For example, oil may be applied, the surface may be made slippery, or the surface may be polished to a mirror finish to lower the coefficient of friction.

[0077] The above discharge chute (2) is configured as an integral body by overlapping and connecting a plurality of piece chute (2a) (2b) (2c) (2d) having a bottom portion (8) and opposing vertical portions (9) (10).

[0078] For example, the left and right edges of the 2 to 8 piece chutes (2a) (2b) (2c) (2d) are overlapped vertically and fixed by means of fastening or welding, etc., and a step portion having a height difference equivalent to the thickness of the piece chutes (2a) (2b) (2c) (2d) is formed on the upper and lower surfaces of the discharge chute (2) at the vertically overlapping portions, and the step portion (11) formed on the upper surface of the discharge chute (2) is configured to be lowered in the direction of the discharge port (3) through which the scrap (S) is discharged, as shown in FIGS. 8 to 10 and 14, so that the scrap (S) discharged along the discharge chute (2) is prevented from moving in the opposite direction (reverse direction) of the discharge port (3) by the catch action of the step portion (11), and thus the scrap (S) is quickly and effectively discharged in the direction of the discharge port (3).

[0079] The front and rear widths of the above-mentioned scrap chutes (2a) (2b) (2c) (2d) are configured to be long so that the entire plane is a square or a rectangle close to a square, so that the scrap (S) falling through the ramp (7) is effectively introduced into, settled in, and discharged from the discharge chutes (2).

[0080] It is preferable that the above discharge chute (2) and the scrap chute (2a), (2b), (2c), (2d) be configured to have a strength and thickness that can sufficiently support and move the scrap (S).

[0081] On the outer surface of the above vertical section (9)(10), a reinforcing member (17)(18) is installed on which an outwardly facing axial pin (13)(14) is formed, and the upper part of a fork-shaped or “∪”-shaped support member (12) is axially installed as a bearing (19)(20) on the outwardly facing axial pin (13)(14), so that the discharge chute (2) can rotate around the outwardly facing axial pin (13)(14).

[0082] The upper part of the rod (16) of the vertically installed lifting cylinder (15) is fixed to the lower center of the above-mentioned support member (12), so that the discharge chute (2) can rise and fall when the rod (16) is raised by the lifting cylinder (15).

[0083] In order to satisfy the lifting stroke of the discharge chute (2), a lifting cylinder with a long lifting stroke may be installed in the discharge chute (2) at a relatively high position so that sufficient lifting can be achieved, or a two-stage cylinder, a double cylinder, or a two-way cylinder may be applied or installed, and a cylinder installed at a position close to the discharge port (3) may be a single-acting cylinder or a single-stage cylinder.

[0084] In the present invention, for the convenience of explanation, it is exemplified that eight discharge chutes (2), for example, the first to eighth discharge chutes (21)(22)(23)(24)(25)(26)(27)(28), discharge scrap (S) by elevating and undulating by the first to eighth elevation cylinders (151)(152)(153)(154)(155)(156)(157)(158), respectively.

[0085] The rear end of the first discharge chute (21) is supported by being placed on the front end of the second discharge chute (22) by overlapping with a predetermined width, the rear end of the second discharge chute (22) is supported by being placed on the front end of the third discharge chute (23) by overlapping with a predetermined width, the rear end of the third discharge chute (23) is supported by being placed on the front end of the fourth discharge chute (24) by overlapping with a predetermined width, the rear end of the fourth discharge chute (24) is supported by being placed on the front end of the fifth discharge chute (25) by overlapping with a predetermined width, the rear end of the fifth discharge chute (25) is supported by being placed on the front end of the sixth discharge chute (26) by overlapping with a predetermined width, the rear end of the sixth discharge chute (26) is supported by being placed on the front end of the seventh discharge chute (27) by overlapping with a predetermined width, and the rear end of the seventh discharge chute (27) The 8th discharge chute (28) is connected in a row while being supported by being placed on top of each other with a predetermined width, and a plurality of ball plungers (30) are installed at predetermined intervals on the portion where the discharge chute (2) is placed on top of each other and supported, so that friction and noise are greatly reduced.

[0086] The number of the above eight first to eighth discharge chutes (21)(22)(23)(24)(25)(26)(27)(28) can be increased or decreased in consideration of the entire discharge section or the entire discharge length through which the scrap (S) is discharged, and of course, the length and width or size of the discharge chute (2) can be appropriately adjusted.

[0087] It is preferable to form an upward protrusion (9a) (10a) on the upper part of the vertical portion (9) (10), and to bend it outward at a predetermined angle (θ) so that the scrap (S) can be better introduced into the discharge chute (2). The predetermined angle (θ) may be 10 to 45°.

[0088] The automatic scrap discharge device (1) of the present invention is installed in a sloped manner in which the first discharge chute (21) is positioned at a high tip and the eighth discharge chute (28) at which the discharge port (3) is positioned is positioned at a low incline so that scrap (S) can be effectively discharged, and thus the entire discharge chute (2) discharges scrap (S) while performing a wave motion in an inclined state.

[0089] The inclination (θ2) of the above-mentioned automatic scrap discharge system (1) may be 10 to 40°, and when the overall length of the automatic scrap discharge system (1) is shortened, the inclination may become steeper, and conversely, when the overall length of the automatic scrap discharge system (1) is lengthened, the inclination may become gentler.

[0090] In the present invention, when the discharge chute (21) located at the foremost position does not require lifting or has a fixed height, as shown in FIG. 5, a support member (12) may be installed on the upper part of a vertical support (150) instead of the first lifting cylinder (151) so that the foremost discharge chute (21) is supported.

[0091] It is preferable that the leading edge of the above-mentioned leading discharge chute (21) be finished with a finishing plate or a finishing plate (21a) so that the scrap (S) flowing into the leading discharge chute (21) does not move to or escape from the leading edge of the leading discharge chute (21).

[0092] The fixed plate (29) at the bottom of the above-mentioned lifting cylinder (15) can be fixed to the floor or ground where the press machine (4) is installed using an anchor bolt, or can be fixed to a foundation stone or a separate support frame, etc., and a plurality of lifting cylinders (15) can be firmly installed using a long frame (29a) connecting the fixed plates (29) to each other.

[0093] The position of the pivot pin (13)(14) installed in the above discharge chute (2), or the point at which the pivot pin (13)(14) is supported, is configured or set to be located on one side of the discharge chute (2), for example, the first piece chute (2a), or in the opposite direction of the discharge port (3), so that the center of gravity of the discharge chute (2) is concentrated in the opposite direction of the discharge port (3) and can be tilted more easily in the direction of the discharge port (3).

[0094] Accordingly, the end of the discharge chute (2) heading to the discharge port (3) is configured to be supported and raised by being placed on the upper part of another discharge chute (2) installed adjacently, so that the discharge chute (2) connected in a row can move in a wave motion as a whole.

[0095] In the present invention, a plurality of ball plungers (30) are installed at a predetermined interval on the part where the end of the discharge chute (2) is supported and placed, thereby preventing surface contact or friction between adjacent discharge chute (2), thereby preventing or drastically reducing the shortening of the lifespan of the discharge chute (2) and noise generation, and achieving smooth wave motion.

[0096] The above ball plunger (30) is formed with an upwardly open spring chamber (33) inside a main body (32) having a screw portion (31) of a predetermined pitch formed on the outer surface as shown in Fig. 10, a spring (34) is inserted and installed in the spring chamber (33), and a spherical ball bearing (35) that is upwardly supported by the spring (34) is installed on the upper part of the spring (34) so ​​as to roll without being separated (detached) from the outside of the main body (32).

[0097] The above ball plunger (30) is fastened to a screw hole (36) formed on one side of the bottom part (8) using a screw part (31) formed on the outer surface of the main body (32), and accordingly, the ball bearing (35) partially protruding from the upper part of the main body (24) supports the bottom surface of the bottom part (8) of the discharge chute (2) by rolling motion in a point contact manner, so that contact or friction between the discharge chute (2) is prevented and noise is not generated, thereby achieving smooth wave motion of the entire discharge chute (2).

[0098] Since the load (or vertical stress) of the adjacent discharge chute (2) is concentrated on the ball bearing (26), it is preferable to construct it from a steel material with excellent wear resistance, such as stainless steel or alloy steel, to suppress oxidation and wear and prevent shortening of the lifespan.

[0099] It is preferable that the above ball plunger (30) be configured to maintain a predetermined thickness so that the ball plunger (30) can be firmly fastened by fixing a reinforcing plate (37) to the upper or lower surface of the bottom portion (8) of the discharge chute (2) that supports the neighboring discharge chute (2) while being positioned at the bottom as shown in Fig. 10.

[0100] In the present invention, the ball plunger (30) is exemplified as being installed at the front end of the discharge chute (2) so that the ball bearing (35) protrudes upward to support the neighboring discharge chute (2). However, it is of course possible to install it at the rear end of the discharge chute (2) so that the ball bearing (35) protrudes downward to support the front end of the neighboring discharge chute (2). Even in this case, it should not affect or hinder the movement or discharge of the scrap (S).

[0101] In the present invention, the first to eighth lifting cylinders (151)(152)(153)(154)(155)(156)(157)(158) may be applied as two-stage cylinders so as to satisfy the lifting stroke. For example, one side of a connecting member (39) is fixed to the rod end of the third lifting cylinder (153), a two-stage lifting cylinder (153a) is respectively installed on the upper surface of the other side of the connecting member (39), and a support member (12) is installed and fixed to the rod end of the two-stage lifting cylinder (153a), thereby enabling the third discharge chute (23) to lift and lower.

[0102] Likewise, by fixing one side of a connecting member (39) to the rod end of the fourth to eighth lifting cylinders (154) to (158), installing a two-stage lifting cylinder (154a to 158a) on the upper surface of the other side of the connecting member (39), and installing and fixing a support member (12) to the rod end of the two-stage lifting cylinders (154a to 158a), the fourth to eighth discharge chutes (24) to (28) can move up and down. Accordingly, the discharge chute (2) moves up and down by the vertically installed lifting cylinder (15) and the entire discharge chute undergoes a wave motion (sine wave motion), so that the scrap (S) introduced into the bottom (8) is quickly and effectively discharged to the low-positioned discharge port (3) without a discharge load, thereby achieving a smooth press operation.

[0103] The above-mentioned lifting cylinder (15)(151~158)(153a~158a) is an example of a lifting means for raising and lowering the discharge chute (2)(21)(22)(23)(24)(25)(26)(27)(28), and it goes without saying that the lifting means can be configured by a combination of a forward / reverse rotating reduction motor and a ball screw. In addition, it goes without saying that the lifting of each discharge chute (2) can be achieved by using other types of lifting means.

[0104] FIG. 16 and FIG. 17 are a plan view and a perspective view of another embodiment of the present invention, illustrating that when there are various obstacles (50) such as pillars or structures in the section where the automatic scrap discharge system (1) is installed, the system can be installed while avoiding the obstacles (50). That is, by considering the shape, form, size, etc. of the obstacle (50), a plurality of discharge chutes (21)(22)(23)(24)(25)(26)(27)(28) are configured in a curved shape, but do not come into contact with the obstacle (50), so that the scrap (S) can be moved (transported) and discharged to the discharge port (3) using a plurality of discharge chutes (21)(22)(23)(24)(25)(26)(27)(28) connected in a curved shape.

[0105] Figures 18 to 25 illustrate the process in which scrap (S) falling through a ramp (7) into the first discharge chute (21) by the wave motion state of the scrap automatic discharge system (1) of the present invention is discharged through the discharge port (3).

[0106] The scrap automatic discharge system (1) of the present invention is configured such that multiple discharge chutes (2) are raised and lowered by an elevating cylinder (15) under the control of a controller, thereby creating a wave motion.

[0107] In this state, as shown in FIG. 18, the scrap (S) dropped through the ramp (7) settles on the bottom part (8) of the first discharge chute (21), and as shown in FIG. 19, the second discharge chute (22) and the third discharge chute (23) are tilted so as to be lowered toward the discharge port (3) by the wave motion according to the descending motion of the second lifting cylinder (152), the third lifting cylinder (153), and the two-stage lifting cylinder (153a), so that the scrap (S) introduced into the first discharge chute (21) slides and moves to the bottom part (8) of the third discharge chute (2) at a lower position than the second discharge chute (22) via the bottom part (8) of the second discharge chute (22).

[0108] And, as shown in FIG. 20, the third discharge chute (23) rises to the maximum and the fourth discharge chute (24) rises partially due to the maximum elevation of the third lifting cylinder (153) and the second-stage lifting cylinder (153a) and the partial elevation of the fourth lifting cylinder (154) and the second-stage lifting cylinder (154a), and as shown in FIG. 21, it slides and moves to the bottom (8) of the fourth discharge chute (24) via the bottom (8) of the third discharge chute (23) which is lower than the second discharge chute (22).

[0109] And, as shown in FIG. 22, the fifth discharge chute (23) rises to the maximum and the sixth discharge chute (24) rises partially due to the maximum rise of the fifth lifting cylinder (155) and the second-stage lifting cylinder (155a) and the partial rise of the sixth lifting cylinder (156) and the second-stage lifting cylinder (156a), and as shown in FIG. 23, it slides and moves to the bottom (8) of the seventh discharge chute (27) via the bottom (8) of the sixth discharge chute (26) which is lower than the fifth discharge chute (25).

[0110] And, as shown in FIG. 24, the seventh discharge chute (27) is raised to the maximum and the eighth discharge chute (28) is raised partially by the maximum elevation of the seventh lifting cylinder (157) and the second-stage lifting cylinder (157a) and the partial elevation of the eighth lifting cylinder (158) and the second-stage lifting cylinder (158a), and as a result, the scrap (S) is discharged to the discharge port (3) via the bottom part (8) of the eighth discharge chute (26) at a lower position than the seventh discharge chute (27), as shown in FIG. 25.

[0111] The scrap automatic discharge system (1) of the present invention is a wave motion of a plurality of discharge chutes (2) connected in a row, each of which is raised and lowered by its own lifting cylinder at a predetermined cycle as shown in FIGS. 18 to 25.

[0112] In the present invention, for the convenience of explanation, it is illustrated that scrap (S) is introduced into the first discharge chute (21) as shown in FIGS. 18 to 25 and then sequentially passes through the second discharge chute (21) to the eighth discharge chute (28) and is then discharged to the discharge port (3). However, since at least one or more slopes (7) of a plurality of scrap discharge devices are installed at predetermined positions on the scrap automatic discharge system (1) of the present invention, the scrap (S) falls and is introduced into the discharge chute (2) at the corresponding position and quickly moves along the plurality of discharge chute (2) that move in a wave motion and is then discharged to the discharge port (3).

[0113] That is, the location where the scrap (S) is dropped is the location where at least one or more ramps (7) of a scrap discharge device are installed, so at least one or more scraps (S) are dropped into at least one location of the scrap automatic discharge system (1) at the same time or with a time difference and then discharged through the discharge port (3).

[0114] The scrap (S) discharged through the above discharge port (3) is discharged to the outside by the scrap hopper (100), thereby allowing smooth press forming operation to be performed without discharge load.

[0115] In another embodiment according to FIGS. 16 and 17 of the present invention, scrap (S) is discharged as described above, and is different in that the scrap (S) is discharged in a curved manner by a plurality of discharge chutes (21)(22)(23)(24)(25)(26)(27)(28) configured to avoid obstacles (50) and an elevating cylinder and a two-stage cylinder.

[0116] The present invention achieves smooth press forming operation by quickly discharging scrap (S) generated during the press forming process to the discharge port (3) through the discharge chute (2) which is installed in a downwardly inclined manner in the direction of the discharge port (3) and moves in a wave motion as a whole by each of the lifting cylinders (15), thereby preventing the discharge load of scrap (S).

[0117] The scrap discharge hopper (100) installed in the discharge port (3) of the above-mentioned scrap automatic discharge system (1) receives the discharged scrap (S) in a bucket, moves it upward, and discharges it outside the space where the press machine (4) is installed.

[0118] The above scrap discharge hopper (100) is configured such that a pair of inclined rails (102) are installed on the front of a body (101) having a low front end and a high rear end, as shown in FIG. 26, a transfer carriage (103) is installed on the inclined rails (102) so as to be able to move back and forth, a cylinder (104) is installed on one side of the body (101), a transfer carriage (103) is installed on the rod end of the cylinder (104), a scrap (S) collection bin (105) is installed on the upper part of the transfer carriage (103), and a cylinder (106) is installed on the transfer carriage (103) to tilt the scrap (S) collection bin (105) rearward so that the collected scrap (S) can be poured out rearward.

[0119] The above scrap (S) collection container (105) is lowered by the cylinder (104) and receives scrap (S) discharged through the discharge port (3) of the eighth discharge chute (28) to have a certain volume or weight, and while the discharge port (3) of the eighth discharge chute (28) is raised, the transport cart (103) is raised along the inclined rail (104) by the cylinder (104), and then the scrap (S) collection container (105) is tilted backward by the cylinder (106) installed on the transport cart (103) so that the collected scrap (S) is poured out, and then it is lowered and returned to receive the next scrap (S) and discharge it through the above process.

[0120] The above scrap discharge hopper (100) can be configured to be installed as a two-stage scrap discharge hopper (100a) or a three-stage scrap discharge hopper as shown in Fig. 26 so that the collected scrap (S) can be discharged by pouring it out to the destination.

[0121] Figure 26 illustrates a state in which scrap (S) is emptied and delivered to the scrap collection bin (105) of the scrap discharge hopper (100) in which the scrap collection bin (105) of the scrap discharge hopper (100) is raised and then lowered while being tilted backward by the cylinder (106).

[0122] In the present invention, the uppermost end of one side where the first discharge chute (21) is located is the highest, and the other side where the discharge port (3) is located has a low slope, so that the scrap (S) falling into the wave motion is smoothly discharged, thereby fundamentally preventing a decrease in the productivity of the press due to the scrap discharge load.

[0123] Since the cross-sectional shape of the bottom part (8) of the discharge chute (2) of the present invention is a semicircle, a semi-ellipse, a semi-paraboloid, or a semi-elliptic paraboloid, even if oil such as drawing oil is applied to the surface or the surface and back surface of the scrap (S), contact or absorption between the scrap (S) and the bottom part (8) is prevented, so that the movement and discharge of the scrap (S) are not affected.

[0124] In the present invention, a plurality of ball plungers (30) are installed on the portion where the end of the discharge chute (2) is supported and placed, so that adjacent discharge chute (2) come into point contact with each other, thereby preventing surface contact or friction, thereby preventing shortening of the lifespan of the discharge chute (2) and noise generation, and also achieving smooth wave motion.

[0125] In the present invention, a finishing plate or a closing plate (21a) is fixed to the leading end of the first discharge chute (21) located at the foremost end to prevent the falling scrap (S) from moving in the opposite direction of the discharge port (3), and also, a step portion (11) corresponding to the thickness of the plate constituting the fragment chute is formed between the fragment chute and between the discharge chute (2) so that the falling scrap (S) is automatically prevented from moving in the opposite direction of the discharge port (3) or from flowing backward.

[0126] The present invention described above is not limited to the present embodiment and the attached drawings, and various substitutions, modifications, and changes are possible within the scope that does not depart from the technical spirit of the present invention, which will be apparent to those skilled in the art to which the present invention pertains.

Claims

1. A plurality of discharge chutes having a bottom; A vertical section that is bent upward to a predetermined height on the front and rear surfaces of the above floor section; A reinforcing member fixed to the outer surface of the vertical portion and having an outwardly facing axial pin formed therein; The upper part of the “∪” shaped support member which is axially installed as a bearing on the above-mentioned outwardly facing pin; Including a rod of an elevator cylinder installed vertically at the center lower portion of the above support member (12); The above-mentioned plurality of discharge chutes are connected in a row while being supported by being placed on the ends of adjacent discharge chutes, and are configured to perform a wave motion as a whole while being raised and lowered by their respective lifting cylinders, thereby forming an automatic scrap discharge system.

2. In claim 1; An automatic scrap discharge system characterized in that the above bottom part has one of a semicircular shape, a semi-elliptical shape, a semi-parabolic shape, and a semi-elliptical parabolic shape.

3. In claim 1 or claim 2; A scrap automatic discharge system characterized in that a plurality of ball plungers are installed at a predetermined interval at the end of the discharge chute so that the end of an adjacent discharge chute is supported by placing it on top of each other through point contact.

4. In claim 3; The above ball plunger, An upward open spring room is formed inside the main body, with a screw portion of a predetermined pitch formed on the outer surface. A spring is inserted and installed in the above spring chamber, An automatic scrap discharge system characterized in that a ball bearing supported by a spring on the upper part of the spring protrudes partially outside the main body to allow rolling motion.

5. In claim 1 or claim 2; The above-mentioned multiple discharge chutes are characterized by a scrap automatic discharge system in which a step portion is formed by overlapping and connecting 2 to 8 piece chutes having a bottom portion and an opposing vertical portion.

6. In claim 1 or claim 2; A scrap automatic discharge system characterized in that the above plurality of discharge chutes are inclined with a high position of the frontmost discharge chutes and a low height of the rearmost discharge chutes.

7. In claim 6; An automatic scrap discharge system characterized by the above inclination being 10 to 40°.

8. In claim 1 or claim 2; A scrap automatic discharge system characterized in that the above-mentioned outwardly directed pins are concentrated on one side of the discharge chute so that the discharge chute can easily tilt.

9. In claim 1 or claim 2; An upward protrusion bent outward at an angle of 10 to 45° on the upper portion of the above vertical section; An automatic scrap discharge system including:

10. In claim 1 or claim 2; A closing plate fixed to the leading end of the above-mentioned top discharge chute; An automatic scrap discharge system including:

11. In claim 1 or claim 2; A scrap automatic discharge system characterized in that the above plurality of discharge chutes are linear or curved so as to avoid obstacles.

12. In claim 1 or claim 2; A scrap discharge hopper installed in the above discharge port and receiving scrap discharged by the discharge chute and discharging it outside the space where the press machine is installed; An automatic scrap discharge system including:

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