Slitting waste discharge apparatus

Abstract

The present invention relates to a slitting byproduct discharge device. It comprises: a main duct having an intake port and an exhaust port; a pushing air duct connected to the intake port and transmitting air supplied from the outside to the main duct so that the air is discharged through the main duct to the exhaust port; and a byproduct guiding duct housed inside the main duct and guiding slitting byproducts discharged from a slitting device into an air flow field inside the main duct so that the slitting byproducts exit through the exhaust port together with the air. The slitting byproduct discharge device of the present invention, as described above, has a structure in which the discharged slitting byproduct does not come into contact with the inner wall of the air passage, thereby eliminating stagnation during discharge and enabling smooth discharge of the slitting byproduct. In addition, the air flow noise is very low because the pressure is automatically adjusted when the pressure inside the air passage rises.

Description

Technology Field

[0001] The present invention relates to a discharge device for continuously discharging by-products from a slitting device to the outside, and more specifically, to a slitting by-product discharge device that enables rapid and efficient discharge by preventing stagnation of by-products inside the discharge passage. Background Technology

[0002] Slitting by-products discharged from a slitting device are the parts cut from both edges of the fabric that are discharged when sheet-type fabric is slit to a specified width. Since slitting by-products are discharged continuously during processing, if they are not removed immediately, they can clutter the work environment and hinder the smooth operation of the slitting device.

[0003] In the past, slitting by-products were collected manually, but processing the by-products by hand was very cumbersome and required a lot of labor. Accordingly, mechanical discharge devices that automatically discharge by-products generated during the process have recently been used.

[0004] FIG. 1 is a drawing illustrating the discharge of slitting by-products using a conventional by-product discharge device (20), and FIG. 2 is a drawing for explaining the problem of the discharge device of FIG. 1.

[0005] As shown in FIG. 1, both edges of a sheet (15) conveyed by a guide roll (13) are slit by a cutter (11). The slitting byproduct (17) cut from the sheet (15) takes the form of, for example, a ‘string’ and is discharged to the outside through a discharge device (20).

[0006] A conventional exhaust device (20) is equipped with a main duct (21) and an induction duct (23). Additionally, a blower unit (25) is installed at one end of the main duct (21), and a crusher unit (26) and an intake unit (27) are installed at the opposite end. The blower unit (25) blows air into the main duct (21), and the intake unit (27) sucks air out of the main duct (21).

[0007] Accordingly, an airflow is formed inside the main duct (21). The induction duct (23) is a pipe that guides the slitting byproduct (17) into the main duct (21). The slitting byproduct (17) introduced into the main duct (21) travels along the airflow, passes through the crushing unit (26), and is discharged to the outside through the intake unit (27).

[0008] However, the conventional discharge device (20) described above does not allow for smooth discharge of slitting byproducts (17). This is because the slitting byproducts (17) frequently get stuck in the connection part (22) between the induction duct (23) and the main duct (21) due to air pressure. When the slitting byproducts (17) are pushed in the direction of arrow d and get stuck in the connection part (22), the discharge of the slitting byproducts stops. A discharge device is required that enables smooth and rapid discharge without causing stagnation of the slitting byproducts.

[0009] In this regard, Korean Registered Utility Model Publication No. 20-0284151 (paper crushing device of an automatic slitter) has been disclosed. Prior art literature

[0010] Utility Model Registration No. 20-0284151 The problem to be solved

[0011] The present invention was devised to resolve the above problems, and aims to provide a slitting byproduct discharge device that has a structure that does not come into contact with the inner wall of the air passage, thereby preventing stagnation during discharge and having almost no air flow noise. means of solving the problem

[0012] The slitting byproduct discharge device of the present invention, as a means of solving the problem to achieve the above objective, comprises: a main duct having an intake port and an exhaust port; a pushing air duct connected to the intake port and transmitting air provided from the outside to the main duct so that the air is discharged through the main duct to the exhaust port; and a byproduct guiding duct accommodated inside the main duct and guiding the slitting byproduct discharged from the slitting device into the air flow field inside the main duct so that the byproduct exits through the exhaust port together with the air.

[0013] In addition, the main duct is connected to an intake unit that sucks in air from inside the main duct and the byproduct induction duct through an exhaust port.

[0014] In addition, the above-mentioned byproduct induction duct is a straight duct having an inlet formed at one end and an outlet provided at the other end, and the other end is spaced apart from the inner surface of the main duct to form a passage between it and the inner surface, and air introduced through the pushing air duct passes through the passage toward the exhaust port.

[0015] In addition, a throttling passage section is formed in the above-mentioned byproduct induction duct to accelerate the air passing through the byproduct induction duct.

[0016] In addition, the above-mentioned byproduct induction duct has a plurality of air induction holes formed therein to guide a portion of the air introduced through the pushing air duct into the byproduct induction duct.

[0017] In addition, the main duct is further equipped with a pressure regulating unit for regulating the pressure inside the main duct.

[0018] In addition, the pressure regulating unit includes a pressure regulating hole formed in the main duct and a shutter for opening and closing the pressure regulating hole.

[0019] In addition, a pressure sensing unit for detecting the internal pressure of the main duct is installed inside the main duct, and a shutter driving unit for operating the shutter based on the sensing information transmitted from the pressure sensing unit is further included. Effects of the invention

[0020] The slitting byproduct discharge device of the present invention, as described above, has a structure in which the discharged slitting byproduct does not come into contact with the inner wall of the air passage, thereby eliminating stagnation during discharge and enabling smooth discharge of the slitting byproduct. In addition, the air flow noise is very low because the pressure is automatically adjusted when the pressure inside the air passage rises. Brief explanation of the drawing

[0021] Figure 1 is a drawing illustrating the discharge of slitting by-products using a conventional slitting by-product discharge device. Figure 2 is a drawing to explain the problem of the discharge device of Figure 1. FIG. 3 is a drawing illustrating an application example of a slitting byproduct discharge device according to one embodiment of the present invention. FIG. 4 is a drawing showing the external appearance of a slitting byproduct discharge device according to one embodiment of the present invention. Figure 5 is a cross-sectional view along line AA of Figure 4. FIG. 6 is a cross-sectional view illustrating the internal configuration of the slitting byproduct discharge device illustrated in FIG. 4. FIG. 7 is a drawing illustrating a modified example of a slitting byproduct discharge device according to one embodiment of the present invention. FIG. 8 is a cross-sectional view of the byproduct induction duct shown in FIG. 7, shown separately. Figure 9 is a partial cross-sectional view showing an electric damper mounted in the pressure regulating hole of Figure 7. FIG. 10 is a block diagram illustrating the driving method of an electric shutter in a slitting byproduct discharge device illustrated in FIG. 7. Specific details for implementing the invention

[0022] Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the attached drawings.

[0023] FIG. 3 is a drawing illustrating an application example of a slitting byproduct discharge device (30) according to one embodiment of the present invention.

[0024] As described above, the slitting byproduct discharge device (20) according to the present embodiment includes a main duct (31), a pushing air duct (32), a byproduct induction duct (43), a sealing cap (41), and a shutter (33).

[0025] Additionally, the pushing air duct (32) is connected to the blower unit (25) and receives air supplied from the blower unit (25) and directs it to the main duct (31). The air directed to the main duct (31) passes through the main duct (31) and then moves to the extension duct (29), the crushing unit (26), and the intake unit (27) together with the slitting byproduct (17).

[0026] Additionally, an extension duct (29) is connected to the lower part of the main duct (31). The extension duct (29) directs the air and slitting byproduct (17) that have passed through the main duct (31) to the crushing unit (26). An intake unit (27) is connected to the extension duct (29) so that the extension duct (29) can draw air from the main duct (31). The intake unit (27) may be a negative pressure pump or an exhaust fan. The negative pressure provided by the intake unit (27) is transmitted to the main duct (31) via the crushing unit (26) and the extension duct (29).

[0027] Ultimately, inside the main duct (31), air supplied by the blower unit (25) and ambient air sucked into the main duct by the intake unit (27) are mixed. The kinetic energy of the mixed air is used as power to move the slitting byproduct (17) to the intake unit (27). The slitting byproduct (17) is pushed by the mixed air or moves by friction with the mixed air.

[0028] FIG. 4 is a drawing showing the external appearance of a slitting byproduct discharge device (30) according to one embodiment of the present invention, and FIG. 5 is a cross-sectional view along line AA of FIG. 4. In addition, FIG. 6 is a cross-sectional view showing the internal configuration of the slitting byproduct discharge device shown in FIG. 4.

[0029] As described above, the main duct (31) takes the shape of being bent into an L shape. The main duct (31) can be constructed by connecting a number of unit ducts. An opening (31b) is formed at the upper part of the main duct (31), and an exhaust port (31n) is provided at the lower part. Additionally, an intake port (31m) is formed on the side.

[0030] The opening (31b) is a passage that opens the main duct (31) upward and supports the sealing cap (41). The sealing cap (41) takes the shape of a ring and is mounted on the opening (31b) to seal the space between the opening (31b) and the byproduct induction duct (43). The upper part of the byproduct induction duct (43) is fixed by being embedded in the sealing cap (41).

[0031] The sealing cap (41) is made of synthetic resin and supports the byproduct induction duct (43) while fixed to the upper part of the main duct (31). The byproduct induction duct (43) is a straight pipe with a certain diameter and is fixed on the central axis of the main duct (31). In addition, a guide inclined surface (41a) is formed on the inner surface of the sealing cap (41). The guide inclined surface (41a) guides the flow of air so that surrounding air flows smoothly into the byproduct induction duct (43).

[0032] The pushing air duct (32) is a duct fixed to the intake port (31m). The pushing air duct (32) transmits air supplied from the blower unit (25) to the main duct (31), allowing the air to pass through the main duct and be discharged through the exhaust port (31n). In particular, the pushing air duct (32) has a shape that is curved downwards. Therefore, the air flowing in the direction of arrow a through the pushing air duct (32) has a downward flow from the beginning.

[0033] The air supplied through the pushing air duct (32) flows downward through the space between the byproduct induction duct (43) and the inward surface of the main duct (31), then combines with the air passing through the byproduct induction duct (43) in the direction of arrow c, and is then sucked out through the exhaust port (31n). The air moving to the exhaust port (31n) is subjected to both the blowing pressure of the blowing unit (25) and the intake pressure of the intake unit (27).

[0034] The byproduct induction duct (43) guides the slitting byproduct (17) discharged from an external slitting device into the air flow field inside the main duct, so that the slitting byproduct receives the kinetic energy of the air and exits through the exhaust port.

[0035] When the slitting device is started to operate, the slitting byproduct (17) that has started to be generated is inserted into the byproduct induction duct (43) by the operator. That is, the operator holds the slitting byproduct (17) with their hand and puts it into the byproduct induction duct (43). When the slitting byproduct (17) is inserted as deeply as possible into the byproduct induction duct (43) and the blower unit (25) and intake unit (27) are operated, an airflow is generated inside the main duct (31), and from then on, the slitting byproduct (17) begins to be transported by the force of the air.

[0036] The byproduct induction duct (43) is a straight duct having an inlet (43d) at the top and an outlet (43e) at the bottom. The inlet (43d) opens to the top of the main duct (31).

[0037] Since the space between the byproduct induction duct (43) and the inner surface of the main duct (31) is blocked by a sealing cap (41), when the intake unit (27) is operated, external air from the upper side of the main duct (31) is drawn into the interior of the byproduct induction duct (43) by the action of the negative pressure of the intake unit and then moves in the direction of arrow c. In order to draw air through the byproduct induction duct (43), the airflow rate of the blower unit (25) must be smaller than the intake flow rate of the intake unit (27).

[0038] In addition, the lower part of the byproduct induction duct (43) is spaced apart from the inner surface of the main duct (31), forming a passage (31p) between it and the inner surface. Air introduced through the intake port (31m) passes through the passage (31p) and is ejected downward. The air ejected downward through the passage pressurizes and supports the slitting byproduct (17) (exiting the byproduct induction duct (43)) in the direction of the central axis of the main duct (31). This prevents the slitting byproduct (17) from being eccentrically positioned in one direction of the main duct (31). In other words, the slitting byproduct (17) is not scraped or caught on the inner wall of the main duct (31), so it is quickly discharged to the outside of the main duct (31) without any significant resistance.

[0039] Meanwhile, the main duct (31) is further provided with a pressure regulating unit for regulating the pressure inside the main duct (31). When the flow rate of air entering the main duct (31) is greater than the flow rate of air exiting the main duct (31), the pressure regulating unit exhausts the air inside the main duct to prevent flow stagnation.

[0040] The pressure regulating section in this embodiment includes a pressure regulating hole (31g) and a shutter (33). The pressure regulating hole (31g) is an air passage formed at the periphery of the main duct (31). When the pressure regulating hole (31g) is opened, air inside the main duct (31) can be exhausted. Alternatively, external air may flow into the main duct (31) through the pressure regulating hole (31g).

[0041] The shutter (33) is a plate-shaped member bent into an arc shape and can open and close the pressure control hole (31g). Both ends of the shutter (33) in the width direction are guided by a shutter guide (34). The shutter (33) can move in the direction of arrow r in FIG. 5 by the shutter guide (34) to block the pressure control hole (31g). It can also move in the opposite direction to open the pressure control hole.

[0042] Additionally, a pressure sensing unit is further installed inside the main duct (31) to detect the internal pressure of the main duct (31). The pressure sensing unit includes a first sensor (36) and a second sensor (37). The first sensor (36) detects the pressure around the byproduct induction duct (43). That is, it senses the pressure of the air supplied from the blower unit (25). Additionally, the second sensor (37) detects the pressure near the exhaust port (31n).

[0043] The pressure information detected by the first sensor (36) and the second sensor (37) can be transmitted to the manager's terminal (e.g., a smartphone) via the communication module (39). The manager checks the pressure information inside the main duct (31) through their smartphone and then opens or closes the pressure control hole (31g). By applying the first and second sensors (36, 37) and the communication module (39) in this way, the pressure change inside the main duct (31) can be continuously monitored, and the degree of opening of the pressure control hole (31g) can be adjusted more accurately based on the detected pressure data.

[0044] FIG. 7 is a drawing illustrating a modified example of a slitting byproduct discharge device according to one embodiment of the present invention, and FIG. 8 is a cross-sectional view separately illustrating the byproduct induction duct illustrated in FIG. 7. In addition, FIG. 9 is a partial cross-sectional view illustrating an electric damper mounted on the pressure control hole of FIG. 7, and FIG. 10 is a block diagram for explaining the driving method of the electric shutter in the slitting byproduct discharge device illustrated in FIG. 7.

[0045] Drawing symbols identical to those mentioned above indicate identical components of the same function, and a repetitive description thereof is omitted.

[0046] As described above, a convex passage section (43a) is formed at the lower end of the byproduct induction duct (43). The convex passage section (43a) is a part formed convexly in the inner direction of the byproduct induction duct (43) and accelerates the air passing through the byproduct induction duct in the direction of arrow c.

[0047] Since the air discharged from the byproduct induction duct (43) is accelerated, the slitting byproduct (17) exiting the byproduct induction duct (43) receives the kinetic energy of the accelerated air, extends further downward, and then bends toward the exhaust port (31n). Even if the intake pressure of the intake unit (27) increases and the slitting byproduct (17) is strongly pulled in the direction of arrow k, there is no risk of the slitting byproduct (17) getting caught on the lower part of the byproduct induction duct (43).

[0048] Additionally, a plurality of air guide holes (43b) are formed in the byproduct guide duct (43). The air guide holes (43b) are through holes connecting the inside and outside of the byproduct guide duct (43). The air guide holes (43b) are air passages that guide a portion of the air introduced through the pushing air duct (32) into the byproduct guide duct (43).

[0049] After a portion of the air introduced through the pushing air duct (32) enters the interior of the byproduct induction duct (43) and is combined with the air descending in the direction of arrow c, it is discharged downward, so the mass flow rate of the air increases, and thus the straightness of the slitting byproduct (17) becomes greater. Accordingly, the possibility of the slitting byproduct (17) getting caught on the lower part of the byproduct induction duct becomes lower.

[0050] Meanwhile, as shown in FIGS. 8 and 9, an electric shutter (50) is installed in the pressure control hole (31g), and a shutter drive unit (38) is mounted on the outside of the main duct (31). In addition, the shutter drive unit (38) is connected to a communication module (39).

[0051] The shutter drive unit (38) operates the shutter based on detection information received from the pressure detection unit, namely the first sensor (36) and the second sensor (37), via the communication module (39). That is, it controls the electric shutter (50) based on the information received from the communication module (39) to adjust the degree of opening of the pressure control hole (31g). In addition, the shutter drive unit (38) is wirelessly connected to the manager's smartphone. This allows the manager to control the electric shutter (50) from a remote location via the shutter drive unit (38).

[0052] Ultimately, the slitting byproduct discharge device of the present embodiment can discharge the slitting byproduct very quickly because it does not get caught anywhere in the main duct when passing through it, and also has very low air flow noise by automatically adjusting the pressure when the pressure inside the air passage provided by the main duct rises.

[0053] Although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical concept of the present invention. Explanation of the symbols

[0054] 11: Cutter 13: Guide Roll 15: Sheet 17: Slitting byproduct 20: Exhaust device 21: Main duct 22: Connection point 23: Induction duct 25: Blower unit 26: Grinding unit 27: Intake unit 29: Extension duct 30: Exhaust device 31: Main duct 31g: Pressure regulating hole 31m: Intake port 31n: Exhaust port 31p: Passageway 32: Pushing air duct 33: Shutter 34: Shutter guide 36: First sensor 37: Second sensor 38: Shutter drive unit 39: Communication module 41: Sealing cap 41a: Guide slope 43: Byproduct induction duct 43a: Throat passage section 43b: Air guide hole 43d:Entrance 43e:Exit 50: Electric shutter

Claims

Claim 1 A slitting byproduct discharge device comprising: a main duct (31) having an intake port (31m) and an exhaust port (31n); a pushing air duct (32) connected to the intake port (31m) and transmitting air supplied from the outside to the main duct (31) so that the air is discharged through the main duct (31) to the exhaust port (31n); and a byproduct induction duct (43) contained within the main duct (31) and guiding slitting byproducts discharged from a slitting device into an air flow field inside the main duct (31) so that the slitting byproducts exit through the exhaust port (31n) together with the air, wherein the byproduct induction duct (43) has a convection passage section (43a) formed therein to accelerate the air passing through the byproduct induction duct (43). Claim 2 In claim 1, the main duct (31) is a slitting byproduct discharge device connected to an intake unit (27) that sucks air inside the main duct (31) and the byproduct induction duct (43) through an exhaust port (31n). Claim 3 In paragraph 2, the byproduct induction duct (43) is a straight duct having an inlet formed at one end and an outlet provided at the other end, and the other end is spaced apart from the inner surface of the main duct (31) to form a passage between it and the inner surface, and the air introduced through the pushing air duct (32) passes through the passage and heads toward the exhaust port (31n), a slitting byproduct discharge device. Claim 4 delete Claim 5 A slitting byproduct discharge device according to claim 1, wherein the byproduct induction duct (43) further has a plurality of air induction holes (43b) formed therein to guide a portion of the air introduced through the pushing air duct (32) into the byproduct induction duct (43). Claim 6 A slitting byproduct discharge device comprising: a main duct (31) having an intake port (31m) and an exhaust port (31n); a pushing air duct (32) connected to the intake port (31m) and transmitting air supplied from the outside to the main duct (31) so that the air is discharged through the main duct (31) to the exhaust port (31n); and a byproduct induction duct (43) contained within the main duct (31) and guiding slitting byproducts discharged from a slitting device into an air flow field within the main duct (31) so that the slitting byproducts exit through the exhaust port (31n) together with the air, wherein the main duct (31) further comprises a pressure regulating unit for regulating the pressure within the main duct (31). Claim 7 In claim 6, the pressure regulating unit comprises a pressure regulating hole (31g) formed in the main duct (31) and a shutter (33) for opening and closing the pressure regulating hole (31g), in a slitting byproduct discharge device. Claim 8 In claim 7, a slitting byproduct discharge device further comprising a pressure sensing unit installed inside the main duct (31) for sensing the internal pressure of the main duct (31), and a shutter driving unit (38) for operating the shutter based on the sensing information transmitted from the pressure sensing unit.

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