Glue printing block for bonding motor iron core, glue printing apparatus, glue printing method and glue dots thereof

Abstract

A glue coating apparatus for bonding silicon steel sheets of a motor iron core, and a glue coating block, a glue coating method and glue dots thereof. The shape of the glue coating block is configured according to need, and is used to coat glue on the silicon steel sheets. The glue coating apparatus comprises a fixing seat (1), a glue storage sponge (2), a glue coating block (3), a cover plate (4), a rebound apparatus and a wear-resistant sleeve (7). The fixing seat (1) is mounted together with the cover plate (4), and the glue storage sponge (2) is disposed therein. The glue storage sponge (2) is provided with the glue coating block (3). The cover plate (4) is provided with a glue coating hole (41), and the wear-resistant sleeve (7) is disposed in the glue coating hole (41), the glue coating block (3) being inserted into the wear-resistant sleeve (7) and the ends being flush. The apparatus can ensure the consistency of the glue dots, and has a long service life.

Description

A rubber printing block, a rubber printing device, a rubber printing method and a glue point thereof for bonding motor core Technical Field

[0001] The present invention relates to a silicon steel sheet bonding device for a motor core, in particular to a glue printing block, a glue printing device, a glue printing method and glue points thereof for bonding the motor core. Background Art

[0002] Electric vehicles are mainly driven by motors. In order to improve the efficiency of the motor core, silicon steel sheets are glued together when stacked. For example, the glue spray nozzle and glue spraying method for manufacturing the iron core of the motor of new energy vehicles disclosed in Chinese patent CN113441298A use a glue spray nozzle to dispense glue on silicon steel sheets. Specifically: the glue spray nozzle for manufacturing the iron core of the motor of new energy vehicles includes a spray valve cylinder and a valve core. The spray valve cylinder includes a glue spray channel. The valve core is placed in the glue spray channel. There is a first gap between the valve core and the glue spray channel. The glue spray channel includes a conical cavity and a glue inlet channel connected to the conical cavity. The valve core includes a conical valve core. The conical valve core is placed in the conical cavity, and the conical surface of the conical valve core is tightly attached to the inner wall of the conical cavity. The upper end of the conical valve core extends out of the upper port of the conical cavity, and the upper end of the conical valve core extends by a height of h1; the conical valve core moves downward to form a glue spray chamber between the conical surface of the conical head and the inner wall of the conical cavity in the spray valve cylinder. The diameter of the upper port of the conical cavity is B1, the diameter of the upper end of the conical head is B2, and the glue spray port cross-sectional area of ​​the glue spray chamber = B1-B2. Because it is used in continuous molds, this device has the following disadvantages: the valve core contacts the silicon steel sheet and is prone to wear. This wear causes the height of the valve core to change, which in turn affects the size of the glue spray chamber, affecting the glue spray volume and, in turn, the size of the glue dots, resulting in poor glue spray consistency. When the glue dots are large, glue can enter the wire grooves when the silicon steel sheets are stacked, affecting the subsequent winding process and requiring glue cleaning, which increases the number of steps. In addition, due to the flatness tolerance of the silicon steel sheet, when there are dozens of glue dots, it is impossible to ensure that all valve cores have the same height. Inconsistent valve core heights can cause the size of the glue spray chamber to change, resulting in poor consistency in glue dot size. At the same time, the valve core has a short service life and high maintenance frequency, which affects production efficiency. Technical issues

[0003] The glue dots are inconsistent in size and require high maintenance frequency. Technical Solutions

[0004] A glue coating block for bonding motor cores. The shape of the glue coating block is set according to needs. The glue coating block is used to coat the glue absorbed inside on the silicon steel sheet when in contact with the silicon steel sheet.

[0005] Preferably, the gluing block is provided with a gluing head that matches the glue dots.

[0006] A gluing device for bonding motor cores, comprising: the above-mentioned gluing block; a fixing seat, the fixing seat being mounted on a lower template, the fixing seat being provided with a glue trough for storing glue; and a cover plate, the cover plate being mounted on the fixing seat and being located above the glue trough, the cover plate being provided with a plurality of gluing holes, the gluing blocks being respectively arranged in the gluing holes, the top of the gluing block being not lower than the top of the cover plate, the bottom of the gluing block being located in the glue trough for absorbing glue; wherein the gluing block is used to apply glue to the silicon steel sheet when in contact with the silicon steel sheet.

[0007] Preferably, it further comprises: a glue storage sponge, wherein the glue storage sponge is installed in the glue tank, and the glue coating blocks are all installed on the glue storage sponge.

[0008] Preferably, it also includes a rebound device, which includes: a rebound rod, which is movably inserted into the rebound hole of the fixing seat and rests against the bottom of the glue coating block; and a spring, which is movably inserted into the rebound rod, and the two ends of the spring are respectively connected to the rebound hole and the rebound rod, for lifting the glue coating block.

[0009] Preferably, it also includes a wear-resistant sleeve, which is movably inserted into the gluing hole of the cover plate. The wear-resistant sleeve is provided with a wear-resistant hole, and the gluing block is movably inserted into the wear-resistant hole, and the top of the gluing block is flush with the top of the wear-resistant sleeve or the top of the gluing block is lower than the top of the wear-resistant sleeve.

[0010] Preferably, when the silicon sheet is pressed against the top of the glue coating block, the glue coating block coats glue on the silicon steel sheet to obtain glue spots.

[0011] The utility model relates to a glue point of a glue coating device for bonding a motor iron core, wherein the glue point expands along the original shape after the silicon steel sheets are laminated.

[0012] Preferably, the shape of the glue dots is obtained by the glue coating block according to requirements. Beneficial effects

[0013] The present invention provides a glue coating block for bonding motor cores, which applies glue on silicon steel sheets by printing, thereby ensuring the consistency of glue point size and having a long service life, reduced maintenance frequency, simple maintenance, extended maintenance cycle, and improved production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of a glue coating block;

[0015] FIG2 is a cross-sectional view of a gluing device for bonding a motor core;

[0016] FIG3 is a partial enlarged view of FIG2;

[0017] FIG4 is a top view of a gluing device for bonding a motor core;

[0018] Figure 5 is a schematic structural diagram of a fixing base;

[0019] FIG6 is a cross-sectional view of the fixing seat;

[0020] Figure 7 is a schematic diagram of the assembly of the glue coating block and the glue storage sponge;

[0021] FIG8 is a cross-sectional view of FIG7;

[0022] Figure 9 is a front view of the cover;

[0023] FIG10 is a side view of the cover plate;

[0024] Figure 11 is a cross-sectional view of the wear-resistant sleeve;

[0025] Figure 12 shows the glue point morphology after silicon steel sheets are stacked. Best Mode for Carrying Out the Invention

[0026] Embodiment 1: As shown in FIG1 , a glue coating block for bonding a motor core is provided. The shape of the glue coating block 3 is set as required. The glue coating block 3 is used to coat the glue absorbed internally on the silicon steel sheet when in contact with the silicon steel sheet.

[0027] A gluing head 31 matching the glue dots is provided on the top of the gluing block 3. The size and shape of the gluing head 3 can be set according to the actual size and shape of the product.

[0028] The glue coating head 31 and the glue coating block 3 form a stepped structure, which is convenient for installation and enables the glue coating block 3 to absorb sufficient glue, ensuring that the glue amount of each printing is the same or close, thereby reducing errors.

[0029] The glue coating block can be made of materials such as sponge. Modes for Carrying Out the Invention

[0030] Example 2: As shown in Figures 1 to 10, a gluing device for bonding motor cores includes a gluing block 3, a fixing base 1, and a cover plate 4. The fixing base 1 is mounted on the lower mold plate 8, and a glue tank 12 for storing glue is provided on the top of the fixing base 1. The cover plate 4 is mounted on the fixing base 1 and is located above the glue tank 12. The cover plate 4 is provided with a plurality of gluing holes 41. The gluing blocks 3 are provided and are respectively arranged in the gluing holes 41. The top of the gluing block 3 is not lower than the top of the cover plate 4, and the bottom of the gluing block 3 is located in the glue tank 12 for absorbing glue. The gluing block 3 is used to apply glue to the silicon steel sheet when in contact with the silicon steel sheet.

[0031] Specifically, the top of the fixing base 1 is provided with a mounting groove 11, a glue groove 12, and a glue feed groove 13. Both the glue groove 12 and the glue feed groove 13 are located at the bottom of the mounting groove 11, and the glue groove 12 and the glue feed groove 13 are connected. A glue inlet hole 14 is provided in the center of the glue groove 12. The fixing base 1 is mounted on the lower template 8, which is provided with a glue feed hole 81. The glue feed hole 81 is connected to the glue feed hole 14 and is also connected to the glue feeding device.

[0032] The bottom of the cover plate 4 is provided with a connecting post 42, which is connected to the bottom of the glue tank 12 to ensure the height position of the cover plate 4. The cover plate 4 is located above the glue storage sponge 2. The cover plate 4 is provided with a plurality of glue printing holes 41. The glue application heads 31 are movably inserted into the glue printing holes 41 and correspond one to one with the glue printing holes 41. The top of the glue application block 3 is not lower than the top of the cover plate 4, thereby ensuring that the glue application block 3 can contact the silicon steel sheet.

[0033] When printing glue, the silicon steel sheet moves to the top of the cover plate 4, and the center of the silicon steel sheet coincides with the center of the fixing seat 1. When the silicon steel sheet is pressed onto the cover plate 4 by the upper mold, the silicon steel sheet contacts the top surface of the glue coating head 31, and the glue sticks to the silicon steel sheet. When the upper mold rises, the silicon steel sheet separates from the glue coating head 31, and the glue adheres to the silicon steel sheet. Glue points of the required diameter are obtained on the silicon steel sheet, and then the silicon steel sheets are stacked.

[0034] Even if the gluing head 31 wears, the change in its diameter is minimal, and the resulting impact is far less than that caused by changes in the glue spray chamber. In other words, the change in the diameter of the gluing head 31 is small, so the resulting glue dots vary slightly, resulting in better glue dot consistency. Because the sponge has a certain degree of elasticity and can be compressed, and slight compression has little effect on the diameter of the gluing head 31, slight deformation has a negligible effect on the change in glue dot diameter. This solves the problem in the prior art of glue dot size variations caused by silicon steel sheet flatness tolerances. Because the sponge gluing head 31 ensures glue dot consistency, it reduces maintenance frequency, extends maintenance cycles, and improves production efficiency.

[0035] Embodiment 3: As shown in Figures 2 to 10, based on the above embodiment 2, a glue storage sponge 2 is further included. The glue storage sponge 2 is a nano sponge. The glue coating block 3 can also be a nano sponge. The glue storage sponge 2 is annular and has a plurality of sponge holes 21 in the annular shape. The glue coating block 3 is installed in the sponge holes 21. The top of the glue coating block 3 is provided with a glue coating head 31. The glue coating head 31 is truncated cone-shaped. The top of the glue coating head 31 matches the size of the glue dot. The truncated cone shape can increase the strength of the glue coating head 31 and maintain a certain supporting force. When the silicon steel sheet is pressed onto the glue coating head 31, the top surface of the glue coating head 31 can be ensured to be in full contact with the silicon steel sheet, ensuring the integrity of the glue dot. The glue storage sponge 2 is installed in the installation groove 11 of the fixing base 1 and is located above the glue tank 12 and the glue feeding tank 13. The glue storage sponge 2 is used to store glue and transport the glue to the glue coating block 3, so that the glue coating block 3 can continuously print glue and achieve a continuous supply of glue. The glue trough 12 and the glue feeding trough 13 are used to flow the glue. The glue feeding trough 13 is also located below the glue coating block 3. The glue feeding trough 13 conveniently feeds the glue to the bottom of the glue coating block 3 so that the glue coating block 3 can directly absorb the glue, thereby ensuring the glue quantity of the glue dots, improving the consistency of the glue dots, and ensuring continuous and reliable glue feeding. The number of glue coating blocks 3 is consistent with the number of glue dots on the silicon steel sheet, and there is a one-to-one correspondence.

[0036] Embodiment 4: As shown in FIG. 2 and FIG. 3 , based on the above embodiment 2 or 3, a rebound device is further included, and the rebound device includes a rebound rod 5 and a spring 6 .

[0037] The bottom of the mounting groove 11 is provided with a plurality of rebound holes 15 in a circular shape. The rebound holes 15 communicate with the glue feeding groove 13. The bottom of the rebound holes 15 is provided with a guide hole 16. The rebound holes 15 and the guide hole 16 form a stepped hole. The top of the rebound rod 5 is provided with a rebound seat 51. The diameter of the rebound seat 51 is larger than the diameter of the rebound rod 5 and smaller than the diameter of the glue coating block 3. The rebound rod 5 is movably inserted into the guide hole 16. The rebound seat 51 is movably inserted into the rebound hole 15. The spring 6 is movably inserted into the rebound rod 5. The two ends of the spring 6 respectively abut against the bottom of the rebound hole 15 and the bottom of the rebound seat 51. The spring 6 is used to press the rebound seat 51 against the glue coating block 3, causing the glue coating block 3 to move toward the cover plate 4.

[0038] The sponge's rebound performance has a limited lifespan. After the glue applicator 31 has been compressed a certain number of times, its rebound performance weakens, making it easy for the top surface of the glue applicator 31 to drop below the top surface of the cover plate 4. This can cause the glue applicator 31 to lose contact with the silicon steel sheet, leading to glue printing failure. Therefore, a rebound device is used to ensure that the top of the glue applicator 31 is always higher than the top surface of the cover plate 4, ensuring normal glue printing.

[0039] When the glue coating head 31 is compressed to a certain height, the glue coating block 3 needs to be replaced to ensure the quality of the glue dots.

[0040] Embodiment 5: As shown in Figures 1 to 11, based on any one of the above embodiments 2 to 4, it further includes a wear-resistant sleeve 7, which is movably inserted into the glue printing hole 41 of the cover plate 4. The wear-resistant sleeve 7 is provided with a wear-resistant hole 71, which is conical. The glue coating block 3 is movably inserted into the wear-resistant hole 71, and the top of the glue coating block 3 is flush with the top of the wear-resistant sleeve 7, or the top of the glue coating block 3 is located below the top of the wear-resistant sleeve 7, and the distance between the top of the wear-resistant sleeve 7 and the top of the wear-resistant sleeve 7 is not greater than 0.2mm. The wear-resistant sleeve 7 can prevent the glue coating head 31 from contacting the silicon steel sheet when the silicon steel sheet moves, reduce the wear of the glue coating head 31, and thus extend the service life of the glue coating head 31.

[0041] When printing glue, the wear-resistant sleeve 7 will move toward the fixing seat 1 together with the glue coating head 31 , that is, the wear-resistant sleeve 7 has a certain lifting space and does not affect the glue printing of the glue coating head 31 .

[0042] Example 6: A gluing method for bonding a motor core, wherein when a silicon wafer is pressed against the top of a gluing block 3, the gluing block 3 applies glue on the silicon steel sheet to obtain glue spots.

[0043] The gluing method adopts a gluing device for bonding motor iron cores to print glue.

[0044] Example 7: As shown in FIG12 , a glue point of a glue coating device for bonding motor cores is expanded along the original shape after the silicon steel sheets are laminated. The shape of the glue point is obtained by the glue coating block 3 according to the requirements.

[0045] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily devise other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the claims of the present invention. Industrial Applicability

[0046] Type your industrial applicability description paragraph here. Sequence Listing Free Content

[0047] Type your sequence listing free description paragraph here.

Claims

1. A glue block for bonding motor cores, characterized in that: The shape of the glue coating block (3) is set as required, and the glue coating block (3) is used to coat the glue absorbed inside onto the silicon steel sheet when in contact with the silicon steel sheet.

2. The adhesive block for bonding motor cores according to claim 1, characterized in that: The glue coating block (3) is provided with a glue coating head (31) matching the glue dots.

3. A glue coating device for bonding motor cores, characterized in that: include: The glue-coated block (3) as claimed in claim 1; A fixing seat (1), the fixing seat (1) being mounted on the lower template (8), the fixing seat (1) being provided with a glue tank (12) for storing glue; and A cover plate (4), the cover plate (4) being mounted on the fixing seat (1) and being located above the glue groove (12), the cover plate (4) being provided with a plurality of glue application holes (41), the glue application blocks (3) being respectively arranged in the glue application holes (41), the top of the glue application block (3) being not lower than the top of the cover plate (4), and the bottom of the glue application block (3) being located in the glue groove (12) for absorbing glue; The glue coating block (3) is used to coat glue on the silicon steel sheet when in contact with the silicon steel sheet.

4. A gluing device for bonding a motor core according to claim 3, characterized in that: Also includes: A glue storage sponge (2), wherein the glue storage sponge (2) is installed in the glue tank (12), and the glue coating blocks (3) are all installed on the glue storage sponge (2).

5. The gluing device for bonding motor cores according to claim 3, characterized in that: Also included is a rebound device, the rebound device comprising: A rebound rod (5), the rebound rod (5) being movably inserted into the rebound hole (15) of the fixing seat (1) and resting against the bottom of the glue coating block (3); and A spring (6), wherein the spring (6) is movably inserted into the rebound rod (5), and the two ends of the spring (6) are respectively connected to the rebound hole (15) and the rebound rod (5), and are used to lift up the glue coating block (3).

6. The gluing device for bonding motor cores according to claim 3, characterized in that: It also comprises a wear-resistant sleeve (7), the wear-resistant sleeve (7) being movably inserted into the glue-coating hole (41) of the cover plate (4), the wear-resistant sleeve (7) being provided with a wear-resistant hole (71), the glue-coating block (3) being movably inserted into the wear-resistant hole (71), and the top of the glue-coating block (3) being flush with the top of the wear-resistant sleeve (7) or the top of the glue-coating block (3) being lower than the top of the wear-resistant sleeve (7).

7. The method for applying glue using a glue coating device for bonding motor cores according to claim 3, characterized in that: When the silicon sheet is pressed against the top of the glue coating block (3), the glue coating block (3) coats glue on the silicon steel sheet to obtain glue spots.

8. The glue point of the glue coating device for bonding the motor core according to claim 1, characterized in that: The glue spots expand along the original shape after the silicon steel sheets are laminated.

9. The glue point of the glue coating device for bonding the motor core according to claim 1, characterized in that: The shape of the glue dots is obtained by the glue coating block (3) according to requirements.

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