Gluing piece and manufacturing method of iron core

Abstract

According to the gluing piece, the gluing area and the shielding area are arranged on the gluing piece, the gluing area is used for bonding glue and gluing electrical steel, and the shielding area is not in contact with the electrical steel. The invention further provides a manufacturing method of the iron core. The manufacturing method comprises the following steps: feeding; the electrical steel in the conveying and moving process is glued through a gluing device, the gluing device comprises a gluing piece and a supporting piece which are arranged up and down, and the electrical steel is erected above the supporting piece to be conveyed and moved; and a punch forming step. By arranging the gluing area and the shielding area on the gluing piece, the shielding area corresponds to the punched hole in the electrical steel, gluing is carried out on the gluing area, glue coating at the corresponding position of the punched hole is avoided, and after gluing treatment is carried out, a punch forming die can be directly adopted for punching, a punch does not adhere glue, and the technical effect that gluing and punching are carried out at the same time is achieved; the manufacturing process of the iron core is simplified, the manufacturing time of the iron core is shortened, and the manufacturing cost of the iron core is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of iron cores, in particular to a gluing piece and a manufacturing method of an iron core. BACKGROUND

[0002] The motor iron core is generally stacked by a plurality of electrical steels. In the manufacturing process of the motor iron core, the electrical steels are generally processed in two steps. In the first step, the electrical steels are first subjected to gluing treatment, and then the glued electrical steels are subjected to solidification cooling and winding. In the second step, the electrical steels processed in the first step are subjected to stamping, stacking and bonding by a stamping forming die. The reason for processing in two steps is that the punch in the stamping forming die punches holes in the electrical steels during the stamping process. If the glued electrical steels are not subjected to solidification treatment, the punch may be glued during the stamping process, affecting the subsequent use of the stamping forming die, and the electrical steels cannot be punched while being glued, which complicates the manufacturing process of the motor iron core and increases the manufacturing cost.

[0003] At present, the gluing treatment is generally performed by means of point gluing or surface gluing. However, both of these two methods have defects. The former is prone to serious overflow of glue during the stamping forming process, affecting the overall performance of the motor iron core. The latter is prone to problems such as uneven bonding strength of the motor iron core, insufficient bonding strength and serious waste of glue. SUMMARY

[0004] In order to solve the above problems of the prior art, the first object of the present application provides a gluing piece which is beneficial to gluing and stamping electrical steels at the same time, and which can not only improve the bonding strength between the electrical steels, but also reduce the waste of glue and the manufacturing cost of the iron core.

[0005] The present application is implemented by the following technical solutions: a gluing piece for gluing electrical steels, the gluing piece being a gluing roller, the gluing roller being capable of axial rotation, the outer circumferential surface of the gluing roller being provided with a gluing area and a shielding area, the gluing area being located on the same circumferential surface, the gluing area being used for bonding glue and gluing the electrical steels, the distance from the gluing area to the center axis of the gluing roller being greater than the distance from the shielding area to the center axis of the gluing roller; or the gluing piece being a gluing block, the gluing block being capable of vertical movement up and down, the gluing block including a lower end surface, the lower end surface being provided with a gluing area and a shielding area, the gluing area being located on the same plane, the gluing area being used for bonding glue and gluing the electrical steels, the gluing area being located below the shielding area.

[0006] The second object of the present application is to provide a manufacturing method of an iron core, which includes the following steps: A feeding step: the electrical steels are moved along a conveying path by a feeding machine; Glue application step: Glue is applied to the electrical steel being transported and moved by a glue application device. The glue application device includes a support and a glue application component. The glue application component and the support are arranged vertically. The electrical steel is mounted on the support and is transported and moved. The glue application component applies glue to the electrical steel mounted on the support. Stamping process: The coated electrical steel is stamped, stacked and bonded into an iron core using a stamping die.

[0007] Furthermore, the manufacturing method of the iron core also includes a curing step, which cures the adhesive coated on the electrical steel, and the cured electrical steel is then supplied to the stamping mold.

[0008] Furthermore, the curing step is room temperature curing or heat curing.

[0009] Furthermore, when the curing step is heat curing, a cooling step is also provided between the curing step and the stamping step.

[0010] Furthermore, the stamping die is also equipped with a heating and pressurizing device.

[0011] This application achieves the technical effect of applying adhesive and shielding on the coated part by setting an adhesive application area and a shielding area on the coated part. The shielding area corresponds to the punching hole on the electrical steel, and the adhesive application area is used to apply adhesive, avoiding the adhesive application on the corresponding position of the punching hole. After the adhesive treatment, the part can be directly stamped using a stamping die, and the punch will not stick to the adhesive. This simplifies the manufacturing process of the iron core, shortens the manufacturing time of the iron core, and reduces the manufacturing cost of the iron core. Furthermore, while ensuring the bonding strength between the electrical steel parts, it greatly reduces the amount of adhesive used, further reducing the manufacturing cost of the iron core. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of one structure of the coating roller in this application.

[0014] Figure 2 This is a schematic diagram of another structure of the coating roller in this application.

[0015] Figure 3 This is a schematic diagram of one structure of the adhesive block in this application.

[0016] Figure 4This is another schematic diagram of the adhesive block in this application.

[0017] Figure 5 This is a schematic diagram illustrating the manufacturing method principle of Example 3.

[0018] Figure 6 This is a schematic diagram illustrating the manufacturing method of Example 4.

[0019] Figure 7 This is a schematic diagram illustrating the principle of another manufacturing method in Example 4.

[0020] Figure 8 This is a schematic diagram of the adhesive application device.

[0021] Figure 9 This is a schematic diagram of another structure of the adhesive application device. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, it should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0025] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. In the description of this application, “a plurality” means two or more unless otherwise expressly and specifically defined. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The following detailed description, with reference to the accompanying drawings, illustrates a method for manufacturing a coated component and an iron core according to this application. Unless otherwise specified, features in the following embodiments can be combined with each other. Example 1

[0029] Please refer to Figure 1 , 2As shown, this application provides a coating component for applying adhesive to electrical steel 9. The coating component is a coating roller 1, which is cylindrical and rotatable axially. The outer circumferential surface of the coating roller 1 is provided with a coating area 4 and a shielding area 5. The coating area 4 is used to adhere the adhesive and apply adhesive to the electrical steel 9. The coating areas 4 are located on the same circumferential surface to ensure the uniformity of the adhesive application to the electrical steel 9. The distance from the coating area 4 to the central axis of the coating roller 1 is greater than the distance from the shielding area 5 to the central axis of the coating roller 1.

[0030] The coating area 4 can be protruding from the outer peripheral surface of the coating roller 1, or it can be the outer peripheral surface of the coating roller 1. When the coating area 4 is the former, a first protrusion is provided on the outer peripheral surface of the coating roller 1, or a protruding ring 6 is fixedly sleeved on the outer peripheral surface of the coating roller 1. The coating area 4 is formed at the end of the first protrusion or the protruding ring 6 away from the outer peripheral surface of the coating roller 1. The shielding area 5 can be the outer peripheral surface of the coating roller 1, or it can be recessed on the outer peripheral surface of the coating roller 1. The shielding area 5 can also be protruding from the outer peripheral surface of the coating roller 1. In this case, the protrusion height of the shielding area 5 is less than the height of the first protrusion or the protruding ring 6. When the coating area 4 is the latter, the shielding area 5 is recessed on the outer peripheral surface of the coating roller 1. Example 2

[0031] Please refer to Figure 3 , 4 As shown, the difference between this embodiment and embodiment 1 is that the coating component is a coating block 2, the coating block 2 can move vertically up and down, the coating block 2 includes a lower end face 3, the lower end face 3 is provided with a coating area 4 and a shielding area 5, the coating area 4 is located on the same plane, the coating area 4 is used to adhere glue and apply glue to the electrical steel 9, and the coating area 4 is located below the shielding area 5.

[0032] The shape of the adhesive block 2 is not limited, and the shape of the lower end face 3 is also not limited.

[0033] The adhesive application area 4 can be protruding from the lower end face 3 of the adhesive application block 2, or it can be the lower end face 3 of the adhesive application block 2. When the adhesive application area 4 is the former, a second protrusion 7 is provided on the lower end face 3 of the adhesive application block 2. The end of the second protrusion 7 facing away from the adhesive application block 2 is flat and forms the adhesive application area 4. The shielding area 5 can be the lower end face 3 of the adhesive application block 2, or the shielding area 5 can be recessed on the lower end face 3 of the adhesive application block 2, or the shielding area 5 can also protrude from the lower end face 3 of the adhesive application block 2. In this case, the height of the shielding area 5 is less than the height of the second protrusion 7. When the adhesive application area 4 is the latter, the shielding area 5 is recessed on the lower end face 3 of the adhesive application block 2. Example 3

[0034] Please refer to Figure 5 , 8 As shown in Figure 9, this embodiment provides a method for manufacturing an iron core, which includes the following steps: Feeding steps: The feeder drives the electrical steel 9 to move along the conveying path; Glue application step: Glue is applied to the electrical steel 9 being transported and moved by a glue application device. The glue application device includes a support member 8 and a glue application member. The glue application member and the support member 8 are arranged vertically. The electrical steel 9 is mounted on the support member 8 and is transported and moved. The glue application member applies glue to the electrical steel 9 mounted on the support member 8. In order to facilitate the transport and movement of the electrical steel 9, the support member 8 is generally made of cylinder, and there can be multiple members arranged close together or multiple members arranged at intervals. The support member 8 can also rotate. Stamping process: The electrical steel 9 after being coated with adhesive is stamped, stacked and bonded into an iron core using a stamping die.

[0035] The coating component is the coating roller 1 in Example 1 or the coating block 2 in Example 2. The coating roller 1 or the coating block 2 is used to coat the electrical steel 9 with adhesive. The coating area 4 coats the electrical steel 9 with adhesive. The shielding area 5 corresponds to the punching position of the electrical steel 9. The shielding area 5 does not contact the electrical steel 9, that is, the position corresponding to the punching is not coated with adhesive. This allows the electrical steel 9 to be directly stamped after being coated with adhesive. Since the position corresponding to the punch in the stamping die is not coated with adhesive, the punch will not have adhesive sticking problems. There is no need to process the electrical steel 9 in steps. This can achieve the technical effect of coating adhesive and stamping at the same time, shortening the manufacturing process and manufacturing time of the iron core, and greatly reducing the manufacturing cost.

[0036] The area of ​​the adhesive coating area 4 is generally much smaller than that of the electrical steel using the surface adhesive coating method. This not only ensures the bonding strength between the electrical steels, but also greatly reduces the amount of adhesive used. Through extensive use by the inventors, the amount of adhesive used to manufacture the iron core using this method can be reduced by at least 60% compared to the iron core manufactured using the surface adhesive coating method, and can even be reduced by more than 70% at the same bonding strength.

[0037] The area of ​​the adhesive coating area 4 is much larger than that of the electrical steel using the dotting adhesive method. The adhesive coating area 4 is located around the shielding area 5, and part of the adhesive coating area 4 is close to the shielding area 5 corresponding to the teeth in the punch hole. This arrangement can not only improve the bonding strength between the electrical steels, but also effectively solve the problem of serious glue overflow, thereby improving the overall performance of the iron core. Example 4

[0038] Please refer to Figures 6~9As shown, the difference between this embodiment and Embodiment 3 is that the manufacturing method of the iron core further includes a curing step, which cures the adhesive coated on the electrical steel, and the electrical steel is supplied to the stamping mold after curing.

[0039] Of course, the curing step can be room temperature curing or heat curing.

[0040] When the curing step is heat curing, a cooling step is provided between the curing step and the stamping step to cool the heat-cured electrical steel and then supply it to the stamping mold.

[0041] In this embodiment, a heating and pressurizing device is also provided inside the stamping die.

[0042] Whether it is room temperature curing or heat curing, the curing temperature is lower than the heating temperature inside the stamping mold. The curing step only has a preliminary curing effect. That is, the subsequent stamping step can be carried out even without this curing step. If this curing step is carried out first, the flowability of the glue between the electrical steel can be reduced in the stamping mold, further ensuring the overall performance of the iron core after molding.

[0043] The curing step, the cooling step, the feeder, the stamping die, and the heating and pressurizing device inside them are the same as those in the prior art, and will not be described in detail here.

[0044] The curing step and the heating and pressurizing device are performed in this embodiment because the adhesive used for coating is epoxy adhesive. However, the curing step and the heating and pressurizing device are not used in embodiment 3 because the adhesive used for coating is anaerobic adhesive.

[0045] Both Embodiment 4 and Embodiment 3 utilize the adhesive coating component described in Embodiment 1 or Embodiment 2. During the conveying process of the electrical steel, the adhesive coating roller 1 rotates at a certain frequency to apply adhesive to the electrical steel, or the adhesive coating block 2 moves up and down at a certain frequency to apply adhesive to the electrical steel. After the adhesive is applied, the electrical steel can undergo subsequent steps, achieving the technical effect of applying adhesive while stamping. This also solves the technical problem that the adhesive cannot be stored for a long time after application.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A coating component for applying adhesive to electrical steel, characterized in that, The coating component is a coating roller, which is axially rotatable. The outer circumferential surface of the coating roller is provided with a coating area and a shielding area. The coating area is located on the same circumferential surface. The coating area is used to adhere glue and apply glue to electrical steel. The distance from the coating area to the central axis of the coating roller is greater than the distance from the shielding area to the central axis of the coating roller.

2. A coating component for applying adhesive to electrical steel, characterized in that, The adhesive application component is an adhesive application block, which can move vertically up and down. The adhesive application block includes a lower end face, on which an adhesive application area and a shielding area are provided. The adhesive application area is located on the same plane and is used to apply adhesive to electrical steel. The adhesive application area is located below the shielding area.

3. A method for manufacturing an iron core, characterized in that, Includes the following steps: Feeding steps: The electrical steel is moved along the conveying path by the feeder; Glue application step: Glue is applied to the electrical steel being transported and moved by a glue application device. The glue application device includes a support member and a glue application member as described in claim 1 or 2. The glue application member and the support member are arranged vertically. The electrical steel is mounted on the support member and is transported and moved. Stamping process: The coated electrical steel is stamped, stacked and bonded into an iron core using a stamping die.

4. The method for manufacturing an iron core according to claim 3, characterized in that, It also includes a curing step, which cures the adhesive applied to the electrical steel, and the cured electrical steel is then supplied to the stamping die.

5. The method for manufacturing an iron core according to claim 4, characterized in that, The curing step is either room temperature curing or heat curing.

6. The method for manufacturing an iron core according to claim 5, characterized in that, When the curing step is heat curing, a cooling step is also provided between the curing step and the stamping step.

7. The method for manufacturing an iron core according to claim 4, characterized in that, The stamping die is also equipped with a heating and pressurizing device.

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