Masking apparatus for electrode component of secondary battery

Abstract

A secondary battery electrode material masking device according to one embodiment of the present invention comprises: an electrode material input device for feeding a secondary battery electrode material into a main conveyor; a first masking device for receiving the electrode material from the main conveyor and masking the upper surface of the electrode material with masking paint; an inversion device provided on the main conveyor and inverting the lower surface of the electrode material, on which the upper surface is masked, so that it is positioned upward; a second masking device for receiving the electrode material from the main conveyor and masking the lower surface of the electrode material with the masking paint; and an electrode material discharge device for receiving the electrode material from the main conveyor and discharging it to the outside.

Description

Technology Field

[0001] The present invention relates to a masking device for secondary battery electrode materials, and more specifically, to a masking device for secondary battery electrode materials that masks the welded part so that an unnecessary surface treatment process is not performed on the welded part. Background Technology

[0002] A secondary battery is a battery composed of one or more electrochemical cells capable of charging and discharging. Secondary batteries are produced in various shapes and sizes, ranging from button cells connected to stabilize power distribution networks to megawatt systems, and utilize combinations of various electrode materials and electrolytes, such as lead acid, nickel-cadmium (NiCd), nickel-hydrogen (NiMH), lithium-ion (Li-ion), and lithium-ion polymer.

[0003] Secondary batteries are manufactured in various forms. Due to factors such as mounting space, structure, specifications, and mass production capabilities, they can be manufactured in cylindrical shapes, prismatic shapes, pouch shapes, etc.

[0004] FIG. 1 illustrates an electrode material (W) used in a secondary battery. As shown in FIG. 1, the electrode material (W) includes a surface treatment portion (W1) formed by being recessed inward and having a surface treatment process performed; and a weld portion (W2) disposed around the surface treatment portion (W1) and having a similar material welded thereto.

[0005] In the surface treatment section (W1), a surface treatment process is performed on the raw material of the electrode material (W) so that a coating layer or a corrosion layer may be formed on the surface. In this case, a heterogeneous material may be bonded to the surface treatment section (W1) and used.

[0006] The welded portion (W2) is the part where the raw material of the electrode material (W) must be exposed. The welded portion (W2) is a part that does not require a surface treatment process. If the entire electrode material (W) is surface-treated, the surface treatment process is performed up to the welded portion (W2), thereby causing unnecessary processing for the welded portion (W2).

[0007] In addition, since the raw material must be exposed on the surface of the weld (W2) in order to weld the welding material to the weld (W2), additional processes such as laser processing must be performed to expose the surface-treated weld (W2) again, so the production speed is reduced and productivity is greatly reduced, such as by an excessive number of additional processes and an increase in manufacturing costs.

[0008] Therefore, there is a need to develop a secondary battery electrode material masking device that can improve productivity by automatically masking parts that do not require a surface treatment process. Prior art literature

[0009] Korean Registered Patent No. 10-2258758 (LG Energy Solution Co., Ltd.), May 25, 2021 The problem to be solved

[0010] The problem that the present invention aims to solve is to provide a secondary battery electrode material masking device that masks the welded part so that unnecessary surface treatment processes are not performed on the welded part. means of solving the problem

[0011] A secondary battery electrode material masking device according to an embodiment of the present invention for solving the above problem comprises: an electrode material feeding device for feeding a secondary battery electrode material into a main conveyor; a first masking device for receiving the electrode material from the main conveyor and masking the upper surface of the electrode material with masking paint; an inversion device provided on the main conveyor and inverting the lower surface of the electrode material, on which the upper surface is masked, so that it is positioned upward; a second masking device for receiving the electrode material from the main conveyor and masking the lower surface of the electrode material with the masking paint; and an electrode material discharge device for receiving the electrode material from the main conveyor and discharging it to the outside.

[0012] In addition, the electrode material input device comprises: an input frame forming an exterior; a first input module provided in the input frame and into which a tray loaded with the electrode material is input; a second input module provided in the input frame and horizontally positioned in the first input module and receiving the tray from the first input module; an input jig module provided in the input frame and positioned opposite to the main conveyor; a hand module provided in the input frame and positioned on the upper part of the second input module, which picks up the electrode material loaded on the tray transferred to the second input module and transfers it to the input jig module; and a return module provided between the first input module and the second input module, which receives an empty tray placed in the second input module and returns it to the outside.

[0013] Additionally, the first input module comprises: a first input conveyor provided on the input frame and transporting the tray to the second input module; a first input drive unit provided on the input frame and rotating the first input conveyor; a first input vertical alignment unit provided on the input frame and below the first input conveyor and supporting the lower part of the tray when the tray is input; and a first input side alignment unit provided on the input frame and supporting the side of the tray when the tray is input.

[0014] Additionally, the second input module comprises: a second input conveyor provided on the input frame and receiving the tray from the first input module; a second input drive unit provided on the input frame and driving the second input conveyor; a second input lifting / lowering unit provided on the input frame and raising / lowering the tray; and a second input transfer unit provided on the second input lifting / lowering unit and transferring the tray in vertical and horizontal directions to transfer the tray to the return module.

[0015] Additionally, the second input lifting / lowering unit comprises: a second input plate provided on the lower side of the second input conveyor; a second input lifting / lowering rod provided to move vertically on the input frame and provided on the lower side of the second input plate to raise and lower the second input plate; and a second input lifting / lowering motor provided on the input frame and connected to the second input lifting / lowering rod to raise and lower the second input lifting / lowering rod.

[0016] Additionally, the second input transfer unit comprises: a second input horizontal transfer unit provided in the second input lifting / lowering unit and moved in a forward / backward direction; and a second input vertical transfer unit provided in the second input horizontal transfer unit, on which the tray is placed and which transfers the tray in a vertical direction to transfer it to the conveying module.

[0017] Additionally, the conveying module comprises: a conveying conveyor provided on the input frame and receiving the tray from the second input module; a conveying driving unit provided on the input frame and driving the conveying conveyor; a conveying vertical unit provided on the input frame and below the conveying conveyor, which raises the tray upward when the tray is input; and a conveying side unit provided on the input frame and supporting the side of the tray when the tray is raised upward.

[0018] Additionally, the first masking device comprises: a masking frame forming an exterior; a masking jig provided on the masking frame and receiving the electrode material, with its upper surface positioned upward; a rotating frame coupled to the masking frame to rotate with a horizontal axis as a rotation axis; a rotating unit provided on the masking frame and positioned on the lower side of the rotating frame to rotate the rotating frame; a screen to which the masking paint is supplied, provided on the rotating frame and positioned on the upper side of the electrode material, and which opens and closes the masking jig when the rotating frame rotates; and a masking unit provided on the upper side of the rotating frame and positioned on the upper side of the screen to apply the masking paint to the screen, thereby allowing the masking paint to pass through the screen and apply it to the upper surface of the electrode material.

[0019] Additionally, the rotation unit comprises: a rotation housing provided on the masking frame and provided on the lower side of the rotation frame; a rotation gear rotatably coupled to the rotation housing; a rotation motor provided on the rotation housing and connected to the rotation gear to rotate the rotation gear; and a rotation link coupled to the lower side of the rotation frame and coupled to the rotation gear, the length of which varies when the rotation gear rotates to rotate the rotation frame.

[0020] Additionally, the masking unit comprises: a masking case vertically provided on the rotating frame; a masking head movably provided on the masking case in a forward and backward direction; a masking ball screw provided on the masking case and coupled to the masking head to move the masking head forward and backward; a masking servo motor provided on the masking case and coupled to the masking ball screw to move the masking ball screw forward and backward; a masking guide provided on the masking case and guiding the masking head in the forward and backward direction when the masking head moves forward and backward; a masking brush provided on the masking head and applying the masking paint to the screen; and a detachment knob provided on the masking head and coupled to the masking brush to detach the masking brush from the masking head. and an angle adjustment knob provided on the masking head and coupled to the masking brush to adjust the coupling angle between the masking brush and the masking head; is included. Effects of the invention

[0021] According to a secondary battery electrode material masking device according to one embodiment of the present invention, masking is performed on the welded part so that unnecessary surface treatment processes are not performed on the welded part. Brief explanation of the drawing

[0022] Figure 1 is a drawing showing an electrode material (W) used in a secondary battery. FIG. 2 is a perspective view of a secondary battery electrode material masking device according to one embodiment of the present invention. FIG. 3 is a perspective view of an electrode material input device (10), a first masking device (20), and an inversion device (30) according to one embodiment of the present invention. FIG. 4 is a side view of an electrode material input device (10) according to one embodiment of the present invention. FIGS. 5 and FIGS. 6 are partial perspective views of an electrode material input device (10) according to one embodiment of the present invention. FIG. 7 is a partial perspective view showing a first input module (12) according to one embodiment of the present invention. FIG. 8 is a partial front view showing a first input module (12) according to one embodiment of the present invention. FIG. 9 is a partial perspective view showing a second input module (13) according to one embodiment of the present invention. FIG. 10 is a partial perspective view showing a second input module (13) according to one embodiment of the present invention. FIG. 11 is a side view showing a second input module (13) according to one embodiment of the present invention. FIG. 12 is a partial perspective view showing a return module (14) according to one embodiment of the present invention. FIG. 13 is a side view showing a return module (14) according to one embodiment of the present invention. FIG. 14 is a perspective view of a hand module (15) according to one embodiment of the present invention. FIG. 15 is a perspective view of an input jig module (16) according to one embodiment of the present invention. FIG. 16 is a perspective view of a first masking device (20) according to one embodiment of the present invention. FIG. 17 is a side view of a first masking device (20) according to one embodiment of the present invention. FIG. 18 is a side view of a rotating unit (25) according to one embodiment of the present invention. FIG. 19 is a bottom view of a masking unit (26) according to one embodiment of the present invention. FIG. 20 is an internal perspective view of a masking unit (26) according to one embodiment of the present invention. FIG. 21 is a front perspective view of a masking unit (26) according to one embodiment of the present invention. FIG. 22 is a rear perspective view of a masking unit (26) according to one embodiment of the present invention. Specific details for implementing the invention

[0023] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0024] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Identical reference numerals in each drawing indicate identical components.

[0025] A masking device for a secondary battery electrode material according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

[0026] FIG. 1 is a drawing showing an electrode material (W) according to one embodiment of the present invention.

[0027] FIG. 2 is a perspective view of a secondary battery electrode material masking device according to one embodiment of the present invention.

[0028] First, the secondary battery electrode material (W) includes a surface treatment portion (W1) where a surface treatment process is performed as shown in FIG. 1; and a weld portion (W2) formed around the surface treatment portion (W1) where a similar material is welded.

[0029] The surface treatment portion (W1) may be formed by being recessed. A surface treatment process is performed on the surface treatment portion (W1). Depending on the embodiment, the surface treatment process may be performed using various processes such as coating, etching, or plating.

[0030] The welded portion (W2) is formed around the surface treatment portion (W1). The welded portion (W2) is a part where the same material is welded and does not require surface treatment, and is a part where the original material must be exposed.

[0031] The secondary battery electrode material masking device of the present invention masks the welded portion (W2) so that unnecessary surface treatment processes are not performed on the welded portion (W2).

[0032] Herein, referring to FIG. 2, a secondary battery electrode material masking device according to one embodiment of the present invention comprises: an electrode material input device (10) for inputting a secondary battery electrode material (W) into a main conveyor (90); a first masking device (20) for receiving the electrode material (W) from the main conveyor (90) and masking the upper surface of the electrode material (W) with masking paint; a reversing device (30) provided on the main conveyor (90) and reversing the lower surface of the electrode material (W) with the upper surface masked so that it is positioned upward; a second masking device (40) for receiving the electrode material (W) from the main conveyor (90) and masking the lower surface of the electrode material (W) with the masking paint; and an electrode material discharge device (50) for receiving the electrode material (W) from the main conveyor (90) and discharging it to the outside.

[0033] The main frame (80) forms the exterior. The main frame (80) may be equipped with a main conveyor (90).

[0034] The main conveyor (90) conveys the electrode material (W) in the conveying direction. In this case, the conveying direction is defined as the Y-axis direction shown in FIG. 2.

[0035] The electrode material feeding device (10) feeds the electrode material (W) into the main conveyor (90). The electrode material feeding device (10) can feed the electrode material (W), which has not had its upper and lower surfaces treated, into the main conveyor (90).

[0036] The main conveyor (90) may be equipped with an input / output pickup robot (60) that transports the electrode material (W) fed from the electrode material input device (10) to the main conveyor (90).

[0037] The main conveyor (90) may be equipped with a masking pickup robot (70) that transfers the electrode material (W) transferred to the main conveyor (90) to the first masking device (20).

[0038] The first masking device (20) is provided at the rear end of the electrode material input device (10) based on the transfer direction.

[0039] The first masking device (20) receives the electrode material (W) from the main conveyor (90). In this case, the first masking device (20) can receive the electrode material (W) from the masking pickup robot (70).

[0040] The first masking device (20) masks the upper surface of the electrode material (W). At this time, the first masking device (20) may apply masking paint to the upper surface of the electrode material (W).

[0041] When the applied masking paint cures, it shields the applied area from the outside, just like masking tape. In this case, the area where the masking paint is applied is shielded, so no surface treatment is performed. Masking paint is a type of paint formed from a polymer resin and is a known technology, so a detailed description is omitted. The masking paint can be removed by a separate solvent.

[0042] The masking pickup robot (70) can transfer the electrode material (W) masked in the first masking device (20) back to the main conveyor (90). The masking pickup robot (70) transfers the electrode material (W) back to the main conveyor (90) such that the upper surface coated with masking paint is positioned upward.

[0043] The inversion device (30) is provided on the main conveyor (90). The inversion device (30) is provided at the rear end of the first masking device (20) with respect to the conveying direction.

[0044] The inversion device (30) can dry the upper surface of the electrode material (W). At this time, the inversion device (30) may be equipped with a known dryer or a hot air blower. In this case, the masking paint applied to the upper surface of the electrode material (W) is dried and formed like the masking tape described above.

[0045] The inversion device (30) inverts the electrode material (W) so that the lower surface of the electrode material (W), which has its upper surface masked, is positioned upward. The inversion device (30) causes the lower surface of the electrode material (W) to be positioned upward by rotational force while dropping the electrode material (W) a certain distance.

[0046] In this case, the masked upper surface of the electrode material (W) is positioned downward, and the unmasked lower surface is inverted upward. Accordingly, the lower surface of the unmasked electrode material (W) is positioned upward.

[0047] The second masking device (40) is provided at the rear end of the inversion device (30) based on the transfer direction.

[0048] The second masking device (40) receives the electrode material (W) from the main conveyor (90). In this case, the second masking device (40) may receive the electrode material (W) from the masking pickup robot (70). At this time, the electrode material (W) is transported so that its lower surface is positioned upward.

[0049] The second masking device (40) masks the lower surface of the electrode material (W) positioned on the upper side. At this time, the second masking device (40) can apply masking paint to the lower surface of the electrode material (W).

[0050] The second masking device (40) masks the lower surface of the electrode material (W) and then transfers the electrode material (W) back to the main conveyor (90). When the masking of the lower surface of the electrode material (W) is completed, both the upper surface and the lower surface of the electrode material (W) are masked.

[0051] The masking pickup robot (70) can transfer the electrode material (W) masked in the second masking device (40) back to the main conveyor (90).

[0052] The second masking device (40) is implemented with the same structure as the first masking device (20). Below, the description of the second masking device (40) is replaced by the description of the first masking device (20), except in special cases.

[0053] The electrode material discharge device (50) is provided at the rear end of the second masking device (40) based on the conveying direction. The main conveyor (90) may be equipped with an input / discharge pickup robot (60) that transfers the electrode material (W) transferred from the main conveyor (90) to the electrode material discharge device (50).

[0054] The electrode material discharge device (50) receives the electrode material (W) that has been masked from the main conveyor (90). The electrode material discharge device (50) discharges the electrode material (W) to the outside.

[0055] Accordingly, masking is completed on the weld (W2) that does not require surface treatment, so the surface treatment process is not performed on the weld (W2).

[0056] The electrode material discharge device (50) is implemented with the same structure as the electrode material input device (10). The operation of the electrode material discharge device (50) is performed in the reverse order of the operation of the electrode material input device (10). In the following description of the electrode material discharge device (50), except in special cases, the description of the electrode material input device (10) is replaced with the description of the electrode material input device (10).

[0057] Hereinafter, an electrode material input device (10) according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 15. As described above, since the electrode material input device (10) is identical to the electrode material discharge device (50), the description of the electrode material input device (10) will replace the description of the electrode material discharge device (50).

[0058] FIG. 3 is a perspective view of an electrode material input device (10), a first masking device (20), and an inversion device (30) according to one embodiment of the present invention.

[0059] FIG. 4 is a side view of an electrode material input device (10) according to one embodiment of the present invention.

[0060] FIGS. 5 and FIGS. 6 are partial perspective views of an electrode material input device (10) according to one embodiment of the present invention.

[0061] Referring to FIGS. 3 to 6, the electrode material input device (10) according to one embodiment of the present invention comprises: an input frame (11) forming an exterior; a first input module (12) provided on the input frame (11) and into which a tray (19) loaded with the electrode material (W) is input; a second input module (13) provided on the input frame (11), horizontally arranged on the first input module (12), and receiving the tray (19) from the first input module (12); and an input jig module (16) provided on the input frame (11), arranged opposite to the second input module (13), and arranged opposite to the main conveyor (90). It includes: a hand module (15) that is provided on the input frame (11) and is provided on the upper part of the second input module (13), and picks up the electrode material (W) loaded on the tray (19) transferred to the second input module (13) and transfers it to the input jig module (16); and a return module (14) that is provided between the first input module (12) and the second input module (13), receives the empty tray (19) placed in the second input module (13), and returns it to the outside.

[0062] In Fig. 3, the X-axis, Y-axis, and Z-axis are defined. Here, the X-axis direction is defined as the forward / backward direction, the Y-axis direction as the transport direction, and the Z-axis direction as the vertical direction.

[0063] The input frame (11) forms the exterior. The input frame (11) can form the overall exterior of the electrode material input device (10) of the present invention. The input frame (11) may be equipped with the components described below.

[0064] The first input module (12) is provided in the input frame (11). A tray (19) loaded with multiple electrode materials (W) is input into the first input module (12). The tray (19) can be input into the first input module (12) in a vertical direction.

[0065] The second input module (13) is provided on the input frame (11). The second input module (13) is positioned horizontally on the first input module (12). The second input module (13) is positioned on the same plane as the first input module (12) and is positioned in a forward and backward direction. The second input module (13) receives a tray (19) loaded with electrode material (W) from the first input module (12).

[0066] The input jig module (16) is provided on the input frame (11). The input jig module (16) is positioned opposite the main conveyor (90). The input jig module (16) is positioned opposite the second input module (13). The input jig module (16) is positioned on one side of the second input frame (11).

[0067] Multiple electrode materials (W) are transferred and arranged in the input jig module (16). The input jig module (16) can be positioned opposite the input / discharge pickup robot (60).

[0068] The hand module (15) may be provided on the main frame (80). The hand module (15) may be provided on the input frame (11).

[0069] A hand module (15) is provided on the upper part of the second input module (13). The hand module (15) picks up the electrode material (W) loaded on the tray (19) transferred to the second input module (13). The hand module (15) picks up the electrode material (W) and transfers it to the input jig module (16).

[0070] The return module (14) is provided between the first input module (12) and the second input module (13). The return module (14) is provided on the upper side of the first input module (12) and the second input module (13).

[0071] The return module (14) receives the empty tray (19) placed in the second input module (13). The return module (14) returns the empty tray (19) to the outside. Accordingly, the empty tray (19) can be discharged to the outside.

[0072] Meanwhile, a first shielding plate (17) may be installed between the first input module (12) and the return module (14). The first shielding plate (17) prevents foreign matter from falling from the return module (14) to the electrode material (W) of the first input module (12).

[0073] Additionally, a second shielding plate (18) may be installed between the second input module (13) and the return module (14). The second shielding plate (18) prevents foreign substances from falling from the return module (14) to the electrode material (W) of the second input module (13).

[0074] Hereinafter, a first input module (12) according to an embodiment of the present invention will be described in detail with reference to FIGS. 7 and 8.

[0075] FIG. 7 is a partial perspective view showing a first input module (12) according to one embodiment of the present invention.

[0076] FIG. 8 is a partial front view showing a first input module (12) according to one embodiment of the present invention.

[0077] Referring to FIGS. 7 and 8, according to one embodiment of the present invention, the first input module (12) comprises: a first input conveyor (121) provided on the input frame (11) and transporting the tray (19) to the second input module (13); a first input drive unit (122) provided on the input frame (11) and rotating the first input conveyor (121); a first input vertical alignment unit (123) provided on the input frame (11) and provided below the first input conveyor (121) and supporting the lower part of the tray (19) when the tray (19) is input; and a first input side alignment unit (124) provided on the input frame (11) and supporting the side of the tray (19) when the tray (19) is input.

[0078] A first input conveyor (121) is provided on an input frame (11) in a forward and backward direction. A tray (19) loaded with electrode material (W) is fed into the first input conveyor (121). The tray (19) can be fed from the upper side. The first input conveyor (121) transports the tray (19) loaded with electrode material (W) to a second input module (13).

[0079] The first input drive unit (122) is provided on the input frame (11). The first input drive unit (122) rotates the first input conveyor (121) to cause the first input conveyor (121) to transport the tray (19) in the forward and backward directions. In this case, the first input drive unit (122) can drive the first input conveyor (121) to advance the tray (19).

[0080] Here, the first input drive unit (122) according to one embodiment of the present invention includes: a first input shaft (1221) connecting the first input conveyor (121) in a horizontal direction; and a first input motor (1222) driving the first input shaft (1221).

[0081] The first input vertical alignment unit (123) is provided on the input frame (11). The first input vertical alignment unit (123) is provided below the first input conveyor (121). The first input vertical alignment unit (123) is provided below the tray (19).

[0082] The first input vertical alignment unit (123) can support the lower part of the tray (19) when the tray (19) is fed into the first input conveyor (121). In this case, the first input vertical alignment unit (123) cushions the impact caused by the tray (19) falling from the upper side to the lower side, so that the electrode material (W) loaded on the tray (19) does not scatter due to the impact.

[0083] The first input side alignment unit (124) is provided on the input frame (11). When the tray (19) is fed into the first input conveyor (121), the first input side alignment unit (124) supports the side of the tray (19) and aligns the tray (19) so as to be aligned in the forward and backward directions.

[0084] Here, the first input side alignment unit (124) according to one embodiment of the present invention comprises: a first input side cylinder (1241) provided to be raised and lowered on the input frame (11); and a first input side support member (1242) provided to be moved horizontally on the first input side cylinder (1241) and facing the side of the tray (19) to support the side of the tray (19).

[0085] The first input side cylinder (1241) is provided to be raised and lowered on the input frame (11). The first input side cylinder (1241) can be moved in a vertical direction.

[0086] The first insertion side support (1242) is provided to be movable in a horizontal direction on the first insertion side cylinder (1241). In this case, the horizontal direction is defined as the Y-axis direction. The first insertion side support (1242) is moved from the first insertion side cylinder (1241) in a horizontal direction where the tray (19) is placed, and supports the side of the tray (19).

[0087] Accordingly, when the tray (19) is fed into the first input conveyor (121), the first input side alignment unit (124) supports the side of the tray (19) so that the electrode material (W) placed on the tray (19) can be maintained in an aligned state.

[0088] A second input module (13) according to an embodiment of the present invention will be described in detail below with reference to FIGS. 7, 9 to 11.

[0089] FIG. 9 is a partial perspective view showing a second input module (13) according to one embodiment of the present invention.

[0090] FIG. 10 is a partial perspective view showing a second input module (13) according to one embodiment of the present invention.

[0091] FIG. 11 is a side view showing a second input module (13) according to one embodiment of the present invention.

[0092] Referring to FIGS. 7 to 11, according to one embodiment of the present invention, the second input module (13) comprises: a second input conveyor (131) provided on the input frame (11) and receiving the tray (19) from the first input module (12); a second input drive unit (132) provided on the input frame (11) and driving the second input conveyor (131); a second input lifting / lowering unit (133) provided on the input frame (11) and raising / lowering the tray (19); and a second input transfer unit (134) provided on the second input lifting / lowering unit (133) and transferring the tray (19) in vertical and horizontal directions to transfer the tray (19) to the return module (14).

[0093] The second input conveyor (131) is provided on the input frame (11) in a forward and backward direction. The second input conveyor (131) is positioned horizontally with respect to the first input conveyor (121).

[0094] The second input conveyor (131) receives a tray (19) loaded with electrode material (W) from the first input module (12). The second input conveyor (131) receives a tray (19) from the first input conveyor (121).

[0095] The second input conveyor (131) transports the tray (19) to the input jig module (16). In this case, the tray (19) is transported in the forward and backward directions.

[0096] The second input drive unit (132) is provided on the input frame (11). The second input drive unit (132) rotates the second input conveyor (131). The second input drive unit (132) drives the second input conveyor (131) in the forward and backward directions to transport the tray (19) in the forward and backward directions. In this case, the second input drive unit (132) can drive the second input conveyor (131) to advance the tray (19).

[0097] Here, the second input drive unit (132) according to one embodiment of the present invention includes: a second input shaft (1321) connecting the second input conveyor (131) in a horizontal direction; a second input motor (1322) provided on the input frame (11) and driving the second input shaft (1321); and a second input pulley (1323) connecting the second input shaft (1321) and the second input motor (1322).

[0098] The second input lifting / lowering unit (133) is provided on the input frame (11). The second input lifting / lowering unit (133) is provided at the bottom of the second input conveyor (131). The second input lifting / lowering unit (133) is provided at the bottom of the tray (19).

[0099] The second input lifting / lowering unit (133) can support the lower part of the tray (19) when the tray (19) is fed into the second input conveyor (131). When the tray (19) is transferred from the first input conveyor (121) to the second input conveyor (131), an impact may occur due to the weight of the tray (19). In this case, the second input lifting / lowering unit (133) cushions the impact on the tray (19) so that the electrode material (W) loaded on the tray (19) does not scatter due to the impact.

[0100] Here, the second input lifting / lowering unit (133) according to one embodiment of the present invention comprises: a second input plate (1331) provided on the lower side of the second input conveyor (131); a second input lifting / lowering rod (1332) provided to move vertically on the input frame (11) and provided on the lower side of the second input plate (1331) to lift and lower the second input plate (1331); and a second input lifting / lowering motor (1334) provided on the input frame (11) and connected to the second input lifting / lowering rod (1332) to lift and lower the second input lifting / lowering rod (1332).

[0101] The second input plate (1331) is provided on the input frame (11). The second input plate (1331) is provided on the lower side of the second input conveyor (131). The second input plate (1331) is provided on the lower side of the tray (19).

[0102] The second input lifting / lowering rod (1332) is positioned through the input frame (11) and moves vertically along the input frame (11).

[0103] The second input lifting / lowering rod (1332) is connected to the lower part of the second input plate (1331) and raises / lowers the second input plate (1331) in a vertical direction.

[0104] A second insertion vertical guide (1333) may be provided around the second insertion lifting / lowering rod (1332). The second insertion vertical guide (1333) is positioned through the insertion frame (11) and is coupled to the lower part of the second insertion plate (1331).

[0105] The second input vertical guide (1333) guides the second input lifting / lowering rod (1332) to move up and down in a constant vertical direction when the second input lifting / lowering rod (1332) moves up and down in a vertical direction.

[0106] The second input lifting / lowering motor (1334) is provided on the input frame (11). The second input lifting / lowering motor (1334) is connected to the second input lifting / lowering rod (1332) and raises / lowers the second input lifting / lowering rod (1332) in a vertical direction. In this case, the second input lifting / lowering rod (1332) is raised / lowers, and the second input plate (1331) is raised / lowers in a vertical direction.

[0107] The second input transfer unit (134) is provided in the second input lifting / lowering unit (133). The second input transfer unit (134) may be provided in the second input plate (1331).

[0108] As described above, when the tray (19) is positioned opposite the input jig module (16), the hand module (15) transfers the electrode material (W) loaded on the tray (19), which was transferred by the second input module (13), to the input jig module (16). In this case, the electrode material (W) is transferred to the input jig module (16), and the tray (19) placed on the second input module (13) becomes an empty tray (19) and must be discharged from the second input module (13).

[0109] The second input transfer unit (134) transfers the tray (19) in a vertical direction and / or a horizontal direction to the return module (14). Accordingly, the empty tray (19) is transferred to the return module (14) so ​​that it can be discharged from the second input module (13).

[0110] Here, the second input transfer unit (134) according to one embodiment of the present invention comprises: a second input horizontal transfer unit (1341) provided in the second input lifting / lowering unit (133) and moved in a forward / backward direction; and a second input vertical transfer unit (1342) provided in the second input horizontal transfer unit (1341), on which the tray (19) is placed and which transfers the tray (19) in a vertical direction to the return module (14).

[0111] The second input horizontal transfer unit (1341) is provided in the second input lifting / lowering unit (133). The second input horizontal transfer unit (1341) may be provided at the bottom of the second input plate (1331). The second input horizontal transfer unit (1341) moves in the forward and backward direction. The second input horizontal transfer unit (1341) moves the second input vertical transfer unit (1342) in the forward and backward direction.

[0112] The second input vertical transfer unit (1342) is provided in the second input horizontal transfer unit (1341). In this case, when the second input horizontal transfer unit (1341) moves in the forward and backward direction, the second input vertical transfer unit (1342) also moves in the forward and backward direction.

[0113] A tray (19) is placed on the second input vertical transfer unit (1342). At this time, a second input vertical plate (1343) on which the tray (19) is placed may be provided on the upper part of the second input vertical transfer unit (1342).

[0114] An empty tray (19) can be placed on the second input vertical transfer unit (1342). The empty tray (19) can be placed on the second input vertical plate (1343). In this case, when the second input vertical transfer unit (1342) moves in the forward and backward direction, the empty tray (19) also moves in the forward and backward direction.

[0115] The second input vertical transfer unit (1342) is raised and lowered to transfer the tray (19) in a vertical direction. In this case, the empty tray (19) is transferred in a vertical direction and transferred to the return module (14). Accordingly, the empty tray (19) is transferred to the return module (14) and can be discharged to the outside.

[0116] A return module (14) according to an embodiment of the present invention will be described in detail below with reference to FIGS. 12 and 13.

[0117] FIG. 12 is a partial perspective view showing a return module (14) according to one embodiment of the present invention.

[0118] FIG. 13 is a side view showing a return module (14) according to one embodiment of the present invention.

[0119] Referring to FIG. 12 to FIG. 13, the conveying module (14) according to one embodiment of the present invention comprises: a conveying conveyor (141) provided on the input frame (11) and receiving the tray (19) from the second input module (13); a conveying driving unit (142) provided on the input frame (11) and driving the conveying conveyor (141); a conveying vertical unit (143) provided on the input frame (11) and below the conveying conveyor (141) and raising the tray (19) upward when the tray (19) is input; and a conveying side unit (144) provided on the input frame (11) and supporting the side of the tray (19) when the tray (19) is raised upward.

[0120] A return conveyor (141) is provided on the input frame (11) in a forward and backward direction. The return conveyor (141) receives an empty tray (19) from the second input module (13). The return conveyor (141) can receive an empty tray (19) from the second input transfer unit (134).

[0121] A return drive unit (142) is provided in the input frame (11). The return drive unit (142) drives the return conveyor (141) so that the return conveyor (141) transports the tray (19) in the forward and backward directions. In this case, the return drive unit (142) can drive the return conveyor (141) to move the empty tray (19) backward.

[0122] Here, the conveying drive unit (142) according to one embodiment of the present invention includes: a conveying shaft (1421) that connects the conveying conveyor (141) in a horizontal direction; and a conveying motor (1422) that drives the conveying shaft (1421).

[0123] The return vertical unit (143) is provided on the input frame (11). The return vertical unit (143) is provided below the return conveyor (141). The return vertical unit (143) is provided below the tray (19).

[0124] The return vertical unit (143) raises the tray (19) upward when the empty tray (19) is fed into the return conveyor (141). In this case, the empty tray (19) can be discharged upward and returned to the outside.

[0125] The return side unit (144) is provided on the input frame (11). When the empty tray (19) is raised upward by the return vertical unit (143), the return side unit (144) supports the side of the empty tray (19). In this case, the return side unit (144) supports the side of the empty tray (19), so that the empty tray (19) can be returned to the outside without falling back from the return module (14).

[0126] Here, the conveying side unit (144) according to one embodiment of the present invention comprises: a conveying side bracket (1441) provided on the input frame (11); a conveying side support member (1442) provided on the input frame (11), positioned opposite to the tray (19), and moved in a horizontal direction to support the side of the tray (19); and a conveying side elastic member (1443) provided on the conveying side bracket (1441) and applying elastic force to the conveying side support member (1442).

[0127] The return side bracket (1441) is provided on the input frame (11). The return side bracket (1441) may be provided on the upper side of the return conveyor (141).

[0128] The return side support (1442) is provided on the input frame (11). The return side support (1442) is positioned opposite the empty tray (19) and is provided to move in a horizontal direction.

[0129] The return side support (1442) moves in a horizontal direction to support the side of the empty tray (19) that has been raised upward from the return vertical unit (143).

[0130] The conveying side elastic member (1443) is provided on the conveying side bracket (1441) and applies elastic force to the conveying side support member (1442). Accordingly, the elastic force applied by the conveying side elastic member (1443) is applied to the conveying side support member (1442), causing the conveying side support member (1442) to protrude toward the empty tray (19) and support the side of the empty tray (19).

[0131] A hand module (15) according to one embodiment of the present invention will be described in detail below with reference to FIG. 14.

[0132] FIG. 14 is a perspective view of a hand module (15) according to one embodiment of the present invention.

[0133] Referring to FIG. 14, according to one embodiment of the present invention, the hand module (15) comprises: a pickup hand (151) that picks up the electrode material (W) loaded on the tray (19) transferred to the second input module (13) and transfers it to the input jig module (16); and a hand transfer unit (152) provided on the input frame (11) and moving the pickup hand (151) in a vertical direction and a horizontal direction.

[0134] A pickup hand (151) is positioned on the upper side of the second input module (13). The pickup hand (151) is moved to the tray (19) transported by the second input module (13). The pickup hand (151) picks up the electrode material (W) loaded on the tray (19) and transports it to the input jig module (16). The pickup hand (151) moves to the input jig module (16) and loads the electrode material (W) onto the input jig module (16).

[0135] The hand transfer unit (152) may be provided on the main frame (80). The hand transfer unit (151) may be provided on the input frame (11).

[0136] The hand transfer unit (152) can move the pickup hand (151) in a vertical and horizontal direction. The hand transfer unit (152) moves the pickup hand (151) to the tray (19) transferred to the second input module (13), and when the pickup hand (151) picks up the electrode material (W), it moves the pickup hand (151) back to the input jig module (16). In this case, the hand transfer unit (152) can move the pickup hand (151) along the X-axis, Y-axis, and Z-axis.

[0137] Hereinafter, an input jig module (16) according to one embodiment of the present invention will be described in detail with reference to FIG. 15.

[0138] FIG. 15 is a perspective view of an input jig module (16) according to one embodiment of the present invention.

[0139] Referring to FIG. 15, the input jig module (16) according to one embodiment of the present invention comprises: a jig housing (161) provided on the input frame (11) and forming an exterior; a loading jig (162) provided on the jig housing (161) and on which the electrode material (W) is loaded; a jig forward / backward unit (165) provided on the jig housing (161) and which moves the loading jig (162) forward and backward to face the main conveyor (90); and a jig guide (164) provided on the jig housing (161) and which guides the loading jig (162) in the forward / backward direction when the jig forward / backward unit (165) moves forward and backward.

[0140] The jig housing (161) is provided on the input frame (11). The jig housing (161) forms an exterior.

[0141] The loading jig (162) is provided in the jig housing (161). The loading jig (162) can be moved back and forth by the jig forward / backward unit (165).

[0142] The electrode material (W) transferred from the hand module (15) is loaded into the loading jig (162). A loading portion (163) in which the electrode material (W) is loaded may be formed by being recessed in the loading jig (162).

[0143] The jig forward / backward unit (165) is provided in the jig housing (161). The jig forward / backward unit (165) moves the loading jig (162) forward and backward to face the main conveyor (90).

[0144] A jig guide (164) is provided in a jig housing (161). The jig guide (164) is positioned in a forward and backward direction. The jig guide (164) guides the loading jig (162) in a forward and backward direction when the jig forward and backward unit (165) moves the loading jig (162) forward and backward.

[0145] When an electrode material (W) is loaded onto a loading jig (162) and the loading jig (162) is moved to face the main conveyor (90) by the jig forward / backward unit (165), the input / output pickup robot (60) can transport the electrode material (W) to the main conveyor (90).

[0146] Hereinafter, a first masking module according to an embodiment of the present invention will be described in detail with reference to FIGS. 16 to 22. Since the first masking device (20) is identical to the second masking device (40), the description of the first masking device (20) will replace the description of the second masking device (40).

[0147] FIG. 16 is a perspective view of a first masking device (20) according to one embodiment of the present invention.

[0148] FIG. 17 is a side view of a first masking device (20) according to one embodiment of the present invention.

[0149] Referring to FIGS. 16 and 17, the first masking device (20) according to one embodiment of the present invention comprises: a masking frame (21) forming an exterior; a masking jig (22) provided on the masking frame (21) and receiving the electrode material (W) and having its upper surface seated on the upper side; a rotating frame (24) coupled to the masking frame (21) so as to rotate with a horizontal axis as a rotation axis; a rotating unit (25) provided on the masking frame (21) and located on the lower side of the rotating frame (24) to rotate the rotating frame (24); and a screen (23) to which the masking paint is supplied, provided on the rotating frame (24), positioned on the upper side of the electrode material (W), and opening and closing the masking jig (22) when the rotating frame (24) rotates. and a masking unit (26) provided on the upper side of the rotating frame (24) and on the upper side of the screen (23), which applies the masking paint to the screen (23) and transmits the masking paint through the screen (23) to apply it to the upper surface of the electrode material (W).

[0150] The masking frame (21) forms the exterior. The masking frame (21) is positioned opposite the main conveyor (90).

[0151] The masking jig (22) is provided on the masking frame (21). The masking jig (22) receives the electrode material (W). The masking jig (22) can receive the electrode material (W) from the masking pickup robot (70).

[0152] An electrode material (W) is placed on the masking jig (22). The upper surface of the electrode material (W) is placed on the masking jig (22) so that it faces upward.

[0153] The pivot frame (24) is pivotally coupled to the masking frame (21). The pivot frame (24) is rotatably coupled to the masking frame (21) with a horizontal axis as the axis of rotation. Here, the horizontal axis is defined as the Y-axis.

[0154] A rotation unit (25) is provided on the masking frame (21). The rotation unit (25) is provided on the lower side of the rotation frame (24) to rotate the rotation frame (24). The rotation unit (25) can rotate the rotation frame (24) clockwise or counterclockwise with respect to a horizontal axis.

[0155] When the rotating unit (25) rotates the rotating frame (24), the rotating frame (24) rotates the screen (23). In this case, the screen (23) opens and closes the masking jig (22).

[0156] A screen (23) is provided on a rotating frame (24). The screen (23) is positioned above the electrode material (W). The masking paint described above is supplied to the screen (23). The masking paint can pass through the screen (23) and be applied to the electrode material (W).

[0157] The screen (23) can be rotated along the horizontal axis as a rotation axis together with the rotating frame (24). The screen (23) opens and closes the masking jig (22) when the rotating frame (24) rotates. Based on FIG. 17, when the rotating frame (24) rotates clockwise, the screen (23) opens the masking jig (22), and when it rotates counterclockwise, the screen (23) closes the masking jig (22).

[0158] The masking unit (26) is provided on the upper side of the rotating frame (24). The masking unit (26) is provided on the upper side of the screen (23).

[0159] As described above, masking paint for masking the weld (W2) is supplied to the screen (23). The masking unit (26) moves in a forward and backward direction to apply the masking paint supplied to the screen (23) to the screen (23). At this time, the masking paint can pass through the screen (23).

[0160] A masking unit (26) that moves in the forward and backward directions transmits masking paint through a screen (23) and applies the masking paint to the upper surface of the electrode material (W). In this case, since the masking paint forms a thin film and is applied to the electrode material (W), it is applied only to the welded portion (W2) and is not applied to the surface treatment portion (W1) that is recessed from the welded portion (W2).

[0161] Since the masking unit (26) transmits masking paint through the screen (23) and applies it to the electrode material (W), the welded portion (W2) of the electrode material (W) is masked. Accordingly, the welded portion (W2) that does not require surface treatment can be masked.

[0162] A rotating unit (25) according to one embodiment of the present invention will be described in detail below with reference to FIG. 18.

[0163] FIG. 18 is a side view of a rotating unit (25) according to one embodiment of the present invention.

[0164] Referring to FIGS. 16 and 18, the rotation unit (25) according to one embodiment of the present invention comprises: a rotation housing (251) provided on the masking frame (21) and provided on the lower side of the rotation frame (24); a rotation gear (252) rotatably coupled to the rotation housing (251); a rotation motor (253) provided on the rotation housing (251) and connected to the rotation gear (252) to rotate the rotation gear (252); and a rotation link (254) coupled to the lower side of the rotation frame (24) and coupled to the rotation gear (252), and whose length varies when the rotation gear (252) rotates to rotate the rotation frame (24).

[0165] The rotating housing (251) forms the exterior. The rotating housing (251) is provided on the masking frame (21) and is provided on the lower side of the rotating frame (24).

[0166] The rotation gear (252) is rotatably coupled to the rotation housing (251). The rotation gear (252) is rotated by a rotation motor (253). The rotation gear (252) is connected to a rotation link (254) so ​​as to rotate the rotation link (254).

[0167] A rotation motor (253) is provided in a rotation housing (251). The rotation motor (253) is connected to a rotation gear (252) and rotates the rotation gear (252).

[0168] The pivot link (254) is coupled to the lower side of the pivot frame (24). The pivot link (254) is coupled to the pivot gear (252) and is rotated by the pivot gear (252). One side of the pivot link (254) is coupled to the lower side of the pivot frame (24), and the other side is coupled to the pivot gear (252).

[0169] The length of the pivot link (254) can be varied when the pivot gear (252) rotates. At this time, the length of the pivot link (254) can be extended or shortened. In this case, the pivot link (254) can be implemented as a piston whose length is extended or shortened.

[0170] When the pivot link (254) is pivoted, the pivot frame (24) connected to one side of the pivot link (254) is pivoted in a clockwise or counterclockwise direction.

[0171] Accordingly, when the rotation motor (253) is operated, the rotation frame (24) rotates, and the screen (23) coupled to the rotation frame (24) can open and close the masking jig (22).

[0172] A masking unit (26) according to an embodiment of the present invention will be described in detail below with reference to FIGS. 19 to 22.

[0173] FIG. 19 is a bottom view of a masking unit (26) according to one embodiment of the present invention.

[0174] FIG. 20 is an internal perspective view of a masking unit (26) according to one embodiment of the present invention.

[0175] FIG. 21 is a front perspective view of a masking unit (26) according to one embodiment of the present invention.

[0176] FIG. 22 is a rear perspective view of a masking unit (26) according to one embodiment of the present invention.

[0177] Referring to FIGS. 19 to 22, the masking unit (26) according to one embodiment of the present invention comprises: a masking case (261) provided perpendicularly to the rotating frame (24); a masking head (265) provided in the masking case (261) so as to be movable in a forward and backward direction; a masking ball screw (262) provided in the masking case (261) and coupled to the masking head (265) to move the masking head (265) forward and backward; a masking servo motor (263) provided in the masking case (261) and coupled to the masking ball screw (262) to rotate the masking ball screw (262); and a masking guide (264) provided in the masking case (261) and guiding the masking head (265) in a forward and backward direction when the masking head (265) moves forward and backward. It includes: a masking brush (267) provided on the masking head (265) and applying the masking paint to the screen (23); a detachment knob (268) provided on the masking head (265) and coupled to the masking brush (267) to detach the masking brush (267) from the masking head (265); and an angle adjustment knob (269) provided on the masking head (265) and coupled to the masking brush (267) to adjust the angle of connection between the masking brush (267) and the masking head (265).

[0178] The masking case (261) forms an exterior and is provided vertically on the rotating frame (24). The masking case (261) is connected vertically to the rotating frame (24).

[0179] A masking head (265) is provided in a masking case (261) so as to be movable in a forward and backward direction. A masking brush (267) is provided in the masking head (265). When the masking head (265) moves forward and backward, the masking brush (267) moves forward and backward.

[0180] A masking ball screw (262) is provided longitudinally in a masking case (261). The masking ball screw (262) is coupled to a masking head (265) to move the masking head (265) back and forth. In this case, the masking ball screw (262) and the masking head (265) can be coupled by a masking link (266).

[0181] A masking servo motor (263) is provided on one side of a masking case (261). The masking servo motor (263) is coupled to a masking ball screw (262) and moves the masking ball screw (262) back and forth. When the masking servo motor (263) moves the masking ball screw (262) back and forth, the masking ball screw (262) moves the masking head (265) back and forth.

[0182] The masking guide (264) is provided longitudinally in the masking case (261) and is provided parallel to the masking ball screw (262).

[0183] The masking guide (264) guides the masking head (265) in the forward and backward direction when the masking head (265) moves back and forth by the masking ball screw (262), so that the masking head (265) moves back and forth at a constant rate.

[0184] A masking brush (267) is detachably provided on a masking head (265). The masking brush (267) applies masking paint supplied to the screen (23) to the screen (23). The masking brush (267) moves back and forth along the surface of the screen (23) when the masking head (265) moves back and forth, applying masking paint to the screen (23) so that the masking paint is transmitted through the screen (23).

[0185] A detachment knob (268) is provided on the masking head (265). The detachment knob (268) is coupled to the masking brush (267). The detachment knob (268) can attach and detach the masking brush (267) to the masking head (265).

[0186] When the masking brush (267) is used for a long time, its end wears out and needs to be replaced with a new one. In this case, when the detachment knob (268) is removed from the masking head (265), the masking brush (267) is removed from the masking head (265). Afterward, the new masking brush (267) is removed from the masking head (265), and when the detachment knob (268) is attached to the masking head (265), the new masking brush (267) is removed from the masking head (265).

[0187] An angle adjustment knob (269) is provided on the masking head (265). The angle adjustment knob (269) is coupled to the masking head (265).

[0188] According to the embodiment, the angle formed by the screen (23) and the masking brush (267) needs to be adjusted. In this case, when the angle adjustment knob (269) is rotated, the angle of connection between the masking brush (267) and the masking head (265) is adjusted. Accordingly, the angle formed by the screen (23) and the masking brush (267) can be adjusted.

[0189] For the time being, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

[0190] The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0191] 10: Electrode material input device 20: First masking device 30: Inversion device 40: Second masking device

Claims

Claim 1 An electrode material input device for inputting a secondary battery electrode material onto a main conveyor; a first masking device for receiving the electrode material from the main conveyor and masking the upper surface of the electrode material with masking paint; an inversion device provided on the main conveyor and inverting the lower surface of the electrode material, on which the upper surface is masked, so that it is positioned upward; a second masking device for receiving the electrode material from the main conveyor and masking the lower surface of the electrode material with the masking paint; and an electrode material discharge device for receiving the electrode material from the main conveyor and discharging it to the outside; wherein the electrode material input device comprises: an input frame forming an exterior; a first input module provided on the input frame and into which a tray loaded with the electrode material is input; a second input module provided on the input frame, horizontally positioned on the first input module, and receiving the tray from the first input module; and an input jig module provided on the input frame and positioned opposite to the main conveyor. A secondary battery electrode material masking device comprising: a hand module provided on the input frame and provided on the upper part of the second input module, which picks up the electrode material loaded on the tray transferred to the second input module and transfers it to the input jig module; and a return module provided between the first input module and the second input module, which receives an empty tray placed in the second input module and returns it to the outside; wherein the hand module includes a pickup hand that picks up the electrode material loaded on the tray transferred to the second input module and transfers it to the input jig module. Claim 2 A masking device for secondary battery electrode materials according to claim 1, wherein the first input module comprises: a first input conveyor provided on the input frame and transporting the tray to the second input module; a first input drive unit provided on the input frame and rotating the first input conveyor; a first input vertical alignment unit provided on the input frame and below the first input conveyor and supporting the lower part of the tray when the tray is input; and a first input side alignment unit provided on the input frame and supporting the side of the tray when the tray is input.

Images