Motor core bonding machine

Abstract

The present invention relates to a motor core bonding machine comprising: an upper body including a bonding body on which one surface of an electrical steel sheet is seated to apply a bonding solution to one surface of a piece of electrical steel sheet; a lower body coupled to the lower side of the upper body; and lifting pins, which are disposed on the upper body, for ejecting the bonding solution onto the upper surface of the bonding body. The bonding body has a flat upper surface and has a plurality of upwardly open solution discharge ports formed along the circumferential direction, and the lifting pins are arranged in each of the plurality of solution discharge ports, thus enabling more efficient bonding work.

Description

Motor core bonding device

[0001] The present invention relates to a motor core bonding device, and more specifically, to a motor core bonding device for applying a bond solution to individual products constituting a motor core.

[0002] Generally, an electric motor is configured such that a stator or rotor is formed by stacking multiple cores equipped with slots for winding coils, and the rotor or stator is formed by having magnets at positions corresponding to the coils or by stacking cores without magnets, so that the rotor rotates by the current flowing through the coils. In particular, motor cores currently widely used in electric vehicles, aircraft, etc., are configured such that a stator or rotor is formed by stacking multiple electrical steel sheets layer upon layer.

[0003] As described above, methods for manufacturing motor cores composed of multiple electrical steel sheets include welding, caulking, and bonding, among which welding and bonding are widely utilized. However, the welding method involves joining the sides of multiple electrical steel sheets, which leads to issues such as partial separation of the sides and noise generation resulting from the degradation of the steel's electromagnetic properties. Consequently, the bonding method is becoming increasingly preferred as it allows for the production of high-performance motor cores by suppressing breakage and addressing noise caused by separation without compromising the electrical steel's electromagnetic properties.

[0004] Korean Registered Patent Publication No. 10-2425061 discloses a motor core continuous bonding device used in a process capable of producing motor cores. The motor core continuous bonding device is configured to bond thin silicon steel plates forming a laminated core of a motor into a single unit by heating and pressing them while aligning them in the rotational and axial directions between upper and lower jigs on a pallet transported on a conveyor arranged in a closed loop, and then cooling them and separating the upper and lower jigs to discharge the bonded motor core. The process disclosed includes a loading unit (1), an upper jig supply unit (2), a pressurizing unit (3), a heating unit (4), a cooling unit (5), an upper jig separation unit (6, 7), an unloading unit (8), and an inspection unit (9).

[0005] Typically, motor cores are produced by stacking hundreds of electrical steel sheets, so in processes such as the aforementioned continuous motor core bonding device, the process of applying a bond solution to each electrical steel sheet is a critical step directly related to the quality of the finished product. However, in existing motor core production processes, the number of products produced per hour is limited because the bond solution is applied to individual sheets through a separate process, followed by stacking and alignment. Furthermore, since a separate device with high precision for each individual sheet is not disclosed in the process, there is a demand for a higher quality motor core bonding device.

[0006] The present invention was devised to solve the problems of the prior art, and the present invention provides a motor core bonding device that rapidly bonds a bond solution to an electrical steel sheet, which is a single sheet product constituting the rotor or stator of a motor core.

[0007] To achieve the above-mentioned purpose, the present invention relates to a motor core bonding device for applying a bond solution to one side of a sheet of electrical steel, comprising: an upper body including a bonding body on which one side of the electrical steel sheet is placed; a lower body coupled to the lower side of the upper body; and a lifting pin disposed on the upper body for discharging a bond solution to the upper surface of the bonding body; wherein the upper surface of the bonding body is formed in a flat shape and a plurality of solution discharge ports are formed opening upward along the circumferential direction, and the lifting pin may be disposed at each of the plurality of solution discharge ports.

[0008] Additionally, the solution discharge port comprises a plurality of first discharge ports spaced apart from each other along the circumference of a circular shape having a first diameter; and a plurality of second discharge ports spaced apart from each other along the circumference of a circular shape having a second diameter; wherein the first diameter is formed to be larger than the second diameter, and the first diameter and the second diameter may be formed to be smaller than the outer diameter and larger than the inner diameter of the electrical steel sheet.

[0009] Additionally, the upper body further includes a first flow hole formed on the upper part of the bonding body and extended in the circumferential direction of the bonding body; a bond solution flows into the first flow hole, and a plurality of lifting pins are raised to discharge the bond solution of the first flow hole to the solution discharge port.

[0010] Additionally, the upper body further includes a second flow hole that is disposed at each of the plurality of solution discharge ports and communicates with the first flow hole; and the bottom surface of the second flow hole may be disposed lower than the bottom surface of the first flow hole.

[0011] Additionally, the upper body may further include a supply line formed in the bonding body to supply a bond solution to the first flow hole.

[0012] In addition, the motor core bonding device according to the present invention may further include: an actuator that generates power; a power transmission unit including a rotating shaft installed in the internal hollow of the lower body and rotated by the power generated from the actuator; and a lifting unit connected to the rotating shaft of the power transmission unit and driving the lifting pin up and down.

[0013] In addition, the power transmission unit further includes a cam disposed on the rotating shaft, and the lifting unit includes a driven body in contact with the upper side of the cam of the power transmission unit, so as to be able to convert the rotational force of the rotating shaft into an upward and downward driving force.

[0014] Additionally, the lifting member may further include: a first lifting plate disposed in the hollow portion of the housing, the lower portion of which is connected to the upper portion of the driven body; and a height adjustment member, the lower portion of which is fixed to the upper surface of the first lifting plate, and the upper portion of which extends into the interior of the bonding body.

[0015] Additionally, the upper body may further include a first receiving portion and a second receiving portion arranged vertically with a hollow interior, and the lifting portion may further include: a second lifting plate disposed in the second receiving portion of the upper body and connected to the upper end of the height adjustment member; and a connecting member having its lower end fixed to the upper surface of the second lifting plate and its upper end extending into the interior of the first receiving portion of the upper body.

[0016] In addition, the motor core bonding device according to the present invention further includes a fastening plate to which a plurality of the lifting pins are fixed; and the lifting member is connected to the fastening plate to transmit an upward and downward driving force to the lifting pins.

[0017] The motor core bonding device according to the present invention, configured as described above, has the advantage of controlling a plurality of lifting pins at once to perform the bond solution application work on electrical steel sheets at high speed. Furthermore, the present invention utilizes an actuator composed of a servo motor and a cam-type power transmission so that a plurality of first and second pressure pins are raised and lowered in one rotation, which can lead to the effect of making the work faster.

[0018] In addition, the motor core bonding device according to the present invention with the above-described configuration has the advantage of enabling high-precision work by simultaneously discharging a bond solution to multiple points on the outer diameter side and the inner diameter side of the electrical steel sheet.

[0019] In addition, the motor core bonding device according to the present invention, configured as described above, has the advantage of being able to apply a precise amount of bond solution to multiple points on an electrical steel sheet without the need for separate individual nozzles, as a first flow hole and a second flow hole are formed in the bonding body.

[0020] FIG. 1 is a drawing illustrating a motor core continuous bonding device according to the prior art.

[0021] FIG. 2 is a diagram of a motor core bonding system according to the present invention.

[0022] FIG. 3 is a perspective view of a motor core bonding device according to the present invention.

[0023] FIG. 4 is a perspective view with a portion of the motor core bonding device according to the present invention obscured.

[0024] FIG. 5 is a plan view of a motor core bonding device according to the present invention.

[0025] FIG. 6 is a plan view of an electrical steel sheet according to the present invention.

[0026] FIG. 7 is a front cross-sectional view of a motor core bonding device according to the present invention along the line AA' of FIG. 5.

[0027] FIG. 8 is a front view with a portion of the motor core bonding device according to the present invention obscured.

[0028] FIG. 9 is a side view schematically illustrating the driving force conversion of a motor core bonding device according to the present invention.

[0029] FIG. 10 is a schematic cross-sectional view of a motor core bonding device according to the present invention along the BB' line of FIG. 5.

[0030] FIG. 11 is an enlarged view of the main part of FIG. 10.

[0031] FIG. 12 is a perspective view with part of the upper body obscured.

[0032] FIG. 13 is a cross-sectional view schematically illustrating the flow path of the bond solution.

[0033] *Detailed explanation of the main symbols in the drawing*

[0034] 10 : Motor core bonding device

[0035] 20 : Motor Core Bonding System

[0036] 21 : Product Supply Department

[0037] 22 : 1st loading section

[0038] 23 : Transfer section

[0039] 24 : 2nd loading section

[0040] 25 : Pressurized preheating section

[0041] 26 : Cooling outlet

[0042] 30 : Electrical steel sheet

[0043] 100 : Upper body

[0044] 110 : Bonding body

[0045] 101 : First body

[0046] 102 : Second body

[0047] 103 : Third body

[0048] 111: 1st Internment Unit

[0049] 112: Second Internment Unit

[0050] 113 : Internal body

[0051] 120 : Solution outlet

[0052] 121 : First discharge port

[0053] 122 : Second discharge port

[0054] 130 : Center hole

[0055] 140 : Supply line

[0056] 141 : 1st line

[0057] 142 : 2nd line

[0058] 150 : 1st flow hole

[0059] 160 : 2nd flow hole

[0060] 200 : Lower body

[0061] 201 : Ministry of Economy and Finance

[0062] 210 : Lower housing

[0063] 220 : Upper housing

[0064] 230 : Side housing

[0065] 300 : Actuator

[0066] 400 : Lifting pin

[0067] 401: 1st lifting pin

[0068] 402 : 2nd lifting pin

[0069] 410 : Fastening plate

[0070] 411 : Through hole

[0071] 500 : Power transmission unit

[0072] 510 : Rotation axis

[0073] 520 : Cam

[0074] 530 : Bearing

[0075] 600 : Lifting unit

[0076] 610 : Follower

[0077] 611 : Connecting bracket

[0078] 620 : 1st elevator plate

[0079] 630 : Height adjustment member

[0080] 640 : 2nd elevator plate

[0081] 650 : Connecting member

[0082] 700 : Guide section

[0083] 810 : Supply unit

[0084] 820 : Discharge part

[0085] A motor core bonding device according to the present invention will be described in detail below with reference to the attached drawings. The drawings presented below are provided as examples to ensure that the concept of the present invention is sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. In addition, throughout the specification, the same reference numerals indicate the same components.

[0086] Unless otherwise defined, technical and scientific terms used herein have the meanings commonly understood by those skilled in the art to which this invention pertains, and descriptions of known functions and configurations that could unnecessarily obscure the essence of the invention are omitted in the following description and accompanying drawings.

[0087] Furthermore, the terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0088] FIG. 2 shows a motor core bonding system including a motor core bonding device according to the present invention, and FIG. 2 shows a diagram of the motor core bonding system according to the present invention.

[0089] Referring to FIG. 2, the motor core bonding system (20) according to the present invention may include a product supply unit (21), a first loading unit (22), a transfer unit (23), a second loading unit (24), a pressurized preheating unit (25), and a cooling extraction unit (26) in addition to the motor core bonding device (10). At this time, the product supply unit (21) is configured to feed an electrical steel sheet (30) into the first loading unit (22) through a transfer device, and individual electrical steel sheets in a state before bonding with a bond solution may be stacked and arranged in the first loading unit (22). The transfer unit (23) is configured to transfer one of the plurality of electrical steel sheets (30) stacked in the first loading unit (22) to the motor core bonding device (10) according to the present invention, and, for example, may transfer by adsorbing the upper surface of an individual electrical steel sheet (30).

[0090] The motor core bonding device (10) according to the present invention is configured to apply a bond solution to an electrical steel sheet (30) delivered through the transfer unit (23), and the electrical steel sheet (30) to which the bond solution has been applied in the motor core bonding device (10) according to the present invention can be transferred to the second loading unit (24). Here, individual electrical steel sheets (30) can be stacked in the second loading unit (24) via the transfer unit (23), the first loading unit (22), and the motor core bonding device (10), and the above process can be repeated until a preset quantity or height is reached in the second loading unit (24).

[0091] The motor core bonding system (20) according to the present invention can form a single unit by curing the bond solution when a set quantity or height is reached in the second loading section (24), by transferring a plurality of stacked electrical steel sheets (30) to the pressurized preheating section (25) and applying pressure and preheating. Subsequently, the product that has been cured can be cooled in the cooling extraction section (26) and extracted as a finished product.

[0092] As described above, the motor core bonding device (10) according to the present invention may be a device that receives a sheet of electrical steel (30) through a conveying unit (23) and bonds or applies a bond solution to one side of the electrical steel sheet in a motor core bonding system (20).

[0093] FIGS. 3 to 6 relate to a motor core bonding device according to the present invention, where FIG. 3 is a perspective view of a motor core bonding device according to the present invention, FIG. 4 is a non-visualized perspective view of a motor core bonding device according to the present invention, FIG. 5 is a plan view of a motor core bonding device according to the present invention, and FIG. 6 is a plan view of an electrical steel sheet according to the present invention.

[0094] Referring to FIGS. 3 and 4, the motor core bonding device (100) according to the present invention may include an upper body (100), a lower body (200), and an actuator (300).

[0095] The upper body (100) may include a bonding body (110) on which the electrical steel sheet (30) is placed on its upper surface, and the upper surface of the bonding body (110) may include a solution discharge port (120) for discharging a bond solution onto one side of the placed electrical steel sheet (30). The solution discharge port (120) may be composed of multiple units and may be arranged along the circumferential direction of the bonding body (110). In this case, the solution discharge port (120) may include a plurality of first discharge ports (121) and a plurality of second discharge ports (122) spaced apart from each other while forming circles of different diameters. In addition, the solution discharge port (120) may be implemented in a form that includes a plurality of first discharge ports (121) or a plurality of second discharge ports (122), and may also be implemented in a form that includes a third discharge port, a fourth discharge port, ..., or an Nth discharge port spaced apart by drawing circles of different diameters. Some of these may be implemented in various forms, such as arranged in an alternating form drawing circles of corresponding diameters, or shapes including polygons, curves, and straight lines.

[0096] The upper body (100) may further include a center hole (130) disposed at the center of the upper surface of the bonding body (110). The center hole (130) may be positioned to collect the remaining bond solution in the bonding body (110) during the bonding process. Additionally, the bonding body (110) may be in the form of a plurality of cylindrical bodies stacked as illustrated, and may include, for example, a first body (101), a second body (102), or a third body (103) having different diameters.

[0097] The lower body (200) supports the lower side of the upper body (200) and can be fixed to the ground or a shelf, etc. At this time, the lower body (200) includes a lower housing (210), an upper housing (220), and a side housing (230), and a hollow portion (201) can be formed by emptying the interior. The actuator (300) can be fixed to the lower body (200). In addition, the actuator (300) can be implemented in various forms such as an electric motor or a cylinder, and more preferably, can be implemented as an electric motor such as a servo motor.

[0098] Referring to FIGS. 5 and 6, the solution discharge port (120) may include a plurality of first discharge ports (121) and a plurality of second discharge ports (122) spaced apart from each other while forming circles of different diameters, wherein the plurality of first discharge ports (121) are spaced apart from each other in the circumferential direction of a circle having a first diameter, and the plurality of second discharge ports (122) are spaced apart from each other in the circumferential direction of a circle having a second diameter. Here, the first diameter of the first discharge port (121) may be formed to be larger than the second diameter of the second discharge port (122).

[0099] The above electrical steel sheet (30) may be formed in a ring shape and may have an inner diameter and an outer diameter. At this time, on one side of the electrical steel sheet (30), the area adjacent to the outer diameter may be set as a first point (P1) and the area adjacent to the inner diameter may be set as a second point (P2), respectively, and the first discharge port (121) may be implemented to be placed at the first point (P1) and the second discharge port (122) may be implemented to be placed at the second point (P2). At this time, the first diameter of the first discharge port (121) and the second diameter of the second discharge port (122) may be formed to be smaller than the outer diameter of the electrical steel sheet (30) and larger than the inner diameter.

[0100] FIGS. 7 to 9 show a motor core bonding device according to the present invention, where FIG. 7 is a cross-sectional view of the motor core bonding device along the line AA' of FIG. 5, FIG. 8 is a front view with a part of the motor core bonding device obscured, and FIG. 9 is a side view schematically illustrating the driving force conversion of the motor core bonding device.

[0101] Referring to FIGS. 7 to 9, the motor core bonding device (10) according to the present invention may further include a power transmission unit (500) comprising a lifting pin (400) disposed on the upper body (100) and discharging a bond solution onto the upper surface of the bonding body (110), a rotating shaft (510) installed in the internal hollow portion (201) of the lower body (200) and rotated by power generated from the actuator (300), and a lifting unit (600) connected to the rotating shaft (510) of the power transmission unit (500) to control the lifting pin (400).

[0102] The power transmission unit (500) may include a cam (520) that is positioned on the rotation shaft (510) and rotates together with it, and a bearing (530) that hinges the other end of the rotation shaft (510), one end of which is connected to the actuator (300). At this time, the cam (520) may be implemented in various forms such as a flat cam and a three-dimensional cam, and more preferably, it may be implemented as a heart cam, which is a flat cam, to convert rotational force into up-and-down reciprocating motion.

[0103] The lifting unit (600) may include a driven member (610) that contacts the cam (520) of the power transmission unit (500), and the height of the driven member (610) can be adjusted when the cam (520) rotates. At this time, when the cam (520) rotates 360° once, the driven member (610) can be raised and lowered to perform bonding work at high speed. Here, the cam (620) has a shape in which the minimum radius (R1) and the maximum radius (R2) are different lengths around the rotation axis (610), and the height of the driven member (610) can be varied in correspondence with the difference between the minimum radius (R1) and the maximum radius (R2).

[0104] The lifting unit (600) may further include a first lifting plate (620) disposed in the hollow portion (201) of the lower body (200) and having its lower surface connected to the upper end of the driven body (610), and a height adjustment member (630) whose lower end is fixed to the upper surface of the first lifting plate (620) and extends upward. At this time, the power transmission unit (500), the driven body (610), and the first lifting plate (620) may be disposed in the hollow portion (201) of the lower body (200), and the upper end of the height adjustment member (630) may extend to the upper body (100) and be disposed inside the bonding body (110). In addition, a connecting bracket (611) may be disposed between the above-mentioned driven body (610) and the first lifting plate (620), the upper surface of the connecting bracket (611) is fixed to the first lifting plate (620), and the lower end of the connecting bracket (611) may be connected so that the driven body (610) can rotate.

[0105] The motor core bonding device (10) according to the present invention may further include a guide part (700) disposed in the hollow part (201) of the lower body (200) to guide the first lifting plate (620) up and down. At this time, the guide part (700) may be configured in a rod shape extending up and down, and a plurality of the guide parts (700) may be disposed.

[0106] FIGS. 10 to 13 show a motor core bonding device according to the present invention, where FIG. 10 is a schematic cross-sectional view of the motor core bonding device along the BB' line of FIG. 5, FIG. 11 is an enlarged view of the main part of FIG. 10, FIG. 11 is a perspective view with a part of the upper body obscured, and FIG. 13 is a cross-sectional view schematically illustrating the flow path of the bond solution.

[0107] Referring to FIG. 10, the bonding body (110) of the inner body (100) may include a first receiving portion (111) and a second receiving portion (112) that are hollow inside and spaced apart vertically, and an inner body (113) may be placed between the first receiving portion (111) and the second receiving portion (112) to partition each other. At this time, the upper end of the height adjustment member (630) of the lifting portion (600) may extend to the second receiving portion (112).

[0108] The lifting member (600) may further include a second lifting plate (640) which is positioned in the second receiving member (112) and coupled to the upper end of the height adjustment member (630), and a connecting member (650) whose lower end is fixed to the upper surface of the second lifting plate (640) and whose upper end penetrates the inner body (113) and extends to the first receiving member (111).

[0109] The motor core bonding device (10) according to the present invention includes a supply unit (810) disposed in the second receiving unit (112) to supply a bond solution, and may further include a discharge unit (820) disposed in the second receiving unit (112) to discharge a bond solution. The supply unit (810) or the discharge unit (820) may be disposed at the center of the lower surface of the inner body (113), and the center of the second lifting plate (640) may be penetrated vertically so that the supply unit (810) or the discharge unit (820) may be connected to an external line and a hose. The upper body (100) may further include a supply line (140) formed in the inner body (113) and communicating with the supply unit (810), and the supply line (140) may supply a bond solution to the upper side of the lifting pin (400).

[0110] The motor core bonding device (10) according to the present invention may further include a fastening plate (410) disposed in the first receiving portion (111) to fix a plurality of the lifting pins (400), and the upper end of the connecting member (650) may be fixed to the fastening plate (410). In addition, a plurality of the first lifting pins (401) and a plurality of the second lifting pins (402) may be fixed together to the fastening plate (410), and the plurality of the lifting pins (400) may be controlled to be driven together by the vertical driving force transmitted through the lifting portion (600).

[0111] Referring to FIGS. 11 to 13, the upper body (100) may include a first flow hole (150) formed on the upper side of the bonding body (110) and positioned above the first receiving portion (111) to receive a bond solution from the supply line (140). At this time, the first flow hole (150) may extend in the front-rear and left-right circumferential directions of the bonding body (110). And when a plurality of the lifting pins (400) move upward, the bond solution in the first flow hole (150) may be discharged to the solution discharge port (120). At this time, the bond solution stored in a single first flow hole (150) can be discharged upward together by a plurality of first lifting pins (401) and a plurality of second lifting pins (402), and the plurality of first lifting pins (401) discharge the bond solution through a plurality of first discharge ports (121), and the plurality of second lifting pins (402) discharge the bond solution through a plurality of second discharge ports (122). Here, the first discharge ports (121) and the second discharge ports (122) can be implemented in a shape in which the area becomes wider as it moves upward.

[0112] The upper body (100) may include a second flow hole (160) formed on the upper side of the bonding body (110) and positioned above the first receiving portion (111), through which a bond solution flows from the first flow hole (150). At this time, a plurality of the second flow holes (160) may be positioned below a plurality of the solution discharge ports (120), and the bottom surface of the second flow hole (160) may be positioned lower than the bottom surface of the first flow hole (150). Additionally, the second flow holes (160) may be positioned above a plurality of the lifting pins (160) or may extend in the circumferential direction of the bond body (110). At this time, the second flow hole (160) extended in the circumferential direction may be formed in at least one pair, such that a plurality of the first lifting pins (401) are disposed in one of the second flow holes (160), and a plurality of the second lifting pins (402) are disposed in the other of the second flow holes (160). In addition, the first flow hole (150) and the second flow hole (160) described above may be implemented in a ring shape in which the width in the front-back-left-right directions is wider than the thickness in the top-bottom direction.

[0113] The supply line (140) is connected to the supply unit (810) to supply a bond solution to the first flow hole (150). At this time, the supply line (140) may include a first line (141) that is positioned in the inner body (113) and is inclined so as to extend from the center toward the edge as it goes upward, and a second line (142) whose lower end is connected to the first line (141) and whose upper end is connected to the first flow hole (150). At this time, a bond solution injected from the supply unit (810) may be supplied to the center of the first line (141).

[0114] The above fastening plate (410) may further include a through hole (411) that penetrates vertically. In this case, the through hole (411) may be formed in multiple numbers and arranged in the lateral direction of each of the multiple lifting pins (400), and may guide the discharge of the bond solution flowing according to the operation of the lifting pin (400). Furthermore, the inner body (113) may be formed in a slanted shape such that the upper surface, on which the first receiving portion (111) is placed, is positioned lower than the rim. In this case, the bond solution flowing down from the through hole (411) may flow to the center of the inner body (113) through the upper surface of the inner body (113), and a hole connected to the discharge portion (820) may be formed in the center of the inner body (113) to discharge the bond solution. The discharge portion (820) may also be composed of multiple units.

[0115] As described above, the present invention has been explained with specific details such as specific components and limited exemplary drawings; however, this is provided merely to aid in a more comprehensive understanding of the invention, and the invention is not limited to the above-mentioned exemplary embodiment. A person skilled in the art can make various modifications and variations from this description.

[0116] Accordingly, the scope of the present invention should not be limited to the described embodiments, and all things equivalent to or having equivalent variations to the claims set forth below, as well as the claims set forth below, shall be considered to fall within the scope of the concept of the present invention.

Claims

1. A motor core bonding device for applying a bond solution to one side of a single sheet of electrical steel, An upper body including a bonding body on which one side of the above electrical steel sheet is seated; A lower body coupled to the lower side of the upper body; and A lifting pin disposed on the upper body and discharging a bond solution onto the upper surface of the bonding body; Includes, The above bonding body is, The upper surface is formed in a flat shape, and a plurality of solution discharge ports are formed opening upward along the circumference, and A motor core bonding device characterized by having the lifting pin disposed at each of the plurality of the above solution discharge ports.

2. In Paragraph 1, The above solution discharge port is, A plurality of first discharge ports spaced apart from each other along the circumference of a circular shape having a first diameter; and a plurality of second discharge ports spaced apart from each other along the circumference of a circular shape having a second diameter; The first diameter is formed to be larger than the second diameter, A motor core bonding device characterized in that the first diameter and the second diameter are formed to be smaller than the outer diameter of the electrical steel sheet and larger than the inner diameter.

3. In Paragraph 1, The above upper body is, A first flow hole formed on the upper part of the bonding body and extended in the circumferential direction of the bonding body; Includes more, A bond solution flows into the first flow hole above, and A motor core bonding device characterized by a plurality of the above-mentioned lifting pins being raised to discharge the bond solution of the first flow hole to the solution discharge port.

4. In Paragraph 3, The above upper body is, A second flow hole disposed at each of the plurality of the above solution discharge ports and communicating with the first flow hole; Includes more, A motor core bonding device characterized in that the bottom surface of the second flow hole is positioned lower than the bottom surface of the first flow hole.

5. In Paragraph 3, The above upper body is, A supply line formed in the bonding body and supplying a bond solution to the first flow hole; A motor core bonding device characterized by further including 6. In Paragraph 1, An actuator that generates power; A power transmission unit including a rotating shaft installed in the internal hollow of the lower body and rotated by power generated from the actuator; and A lifting unit connected to the rotating shaft of the power transmission unit and driving the lifting pin up and down; A motor core bonding device characterized by further including 7. In Paragraph 6, The above power transmission unit further includes a cam disposed on the rotating shaft, and The above lifting unit includes a driven body that contacts the upper side of the cam of the power transmission unit, A motor core bonding device characterized by converting the rotational force of the above-mentioned rotating shaft into an up-and-down driving force.

8. In Paragraph 7, The above lifting unit is, A first lifting plate disposed in the hollow portion of the housing and having its lower surface connected to the upper surface of the driven body; and A motor core bonding device characterized by further including a height adjustment member, the lower end of which is fixed to the upper surface of the first lifting plate, and the upper end of which extends into the interior of the bonding body.

9. In Paragraph 8, The above upper body is, It includes a first receiving section and a second receiving section that are hollow inside and arranged vertically, and The above lifting unit is, A second lifting plate disposed in the second receiving portion of the upper body and connected to the upper end of the height adjustment member; and A connecting member having its lower end fixed to the upper surface of the second lifting plate, and its upper end extending into the interior of the first receiving portion of the upper body; A motor core bonding device characterized by further including 10. In Paragraph 6, A fastening plate to which a plurality of the above-mentioned lifting pins are fixed; Includes more, A motor core bonding device characterized by the above lifting member being connected to the above fastening plate and transmitting vertical driving force to the above lifting pin.

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