Equipment for controlling thickness of adhesive layer in bonding of special-shaped magnetic assembly

Abstract

The utility model discloses equipment for controlling the thickness of an adhesive layer for bonding a special-shaped magnetic assembly. The equipment comprises a jig, a pressure head, a push rod and a limiting block, a machining groove is formed in the jig and extends transversely, and two magnet sets are placed in the machining groove, arranged at intervals and capable of transversely sliding in the extending direction of the machining groove. The pressing head is located over the machining groove and can ascend and descend up and down so as to be limited on the top side of the magnet set when descending to be close to the machining groove. The push rod transversely extends, is located on one side of the jig and can horizontally get close to or get away from the jig so that when the push rod gets close to the jig, the push rod can push the magnet set from one side of the magnet set in the extending direction of the machining groove, and the magnet set can get close to the other magnet set. And the limiting blocks are located on one side of the jig and used for limiting the push rod to continuously move in the direction of the machining groove, the multiple limiting blocks are different in size, and one of the multiple limiting blocks is selected to be installed so that the push rod can be limited at different positions. And the thickness of an adhesive layer between the two magnet groups can be controlled to reach a preset thickness.

Description

Technical Field

[0001] This utility model relates to the technical field of neodymium iron boron magnet assembly, and in particular to a device for controlling the thickness of the adhesive layer when bonding irregularly shaped magnetic components. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets are typically formed by bonding multiple magnets together. Due to the small size of the magnets, the bonding area is also relatively small, especially for irregularly shaped magnets. Compared to square or round magnets, the bonding surface is even smaller. If the bonding thickness between the magnets does not reach the predetermined thickness, insufficient adhesion can easily lead to delamination. Currently, the equipment used for bonding NdFeB magnets on the market produces adhesive layers of inconsistent thickness. Since the thickness of each adhesive layer cannot be measured during sampling inspections, only the overall dimensions of the NdFeB magnet product can be inspected. As a result, products with substandard adhesive layer thicknesses may leave the factory, leading to cracking issues in subsequent products.

[0003] Therefore, controlling the thickness of each adhesive layer is particularly important during the processing of neodymium iron boron magnets, which is the basis of this case. Utility Model Content

[0004] The purpose of this invention is to provide a device for controlling the thickness of the adhesive layer when bonding irregularly shaped magnetic components. The technical problem to be solved is to provide a device that can control the thickness of the adhesive layer between magnets.

[0005] To achieve the above objectives, the solution of this utility model is: a device for controlling the thickness of the adhesive layer when bonding irregularly shaped magnetic components, including a jig, a pressure head, a push rod, and a limiting block;

[0006] The fixture has a machining groove that extends laterally. Two sets of magnets are placed inside the machining groove. The two sets of magnets are arranged at intervals and can slide laterally along the extension direction of the machining groove so that they can come close to each other and stick together.

[0007] The pressure head is located directly above the processing groove and can move up and down, so that when it descends and approaches the processing groove, it is limited to the top side of the magnet assembly;

[0008] The push rod extends laterally and is located on one side of the fixture. It can move horizontally closer to or away from the fixture so that when it is close to the fixture, it pushes the magnet group from one side of the magnet group along the direction of the machining groove, so that the magnet group is close to another magnet group.

[0009] The limiting block is located on one side of the fixture to limit the push rod from moving towards the fixture side when it approaches the machining groove horizontally, thus restricting the push rod from continuing to move towards the machining groove. There are multiple limiting blocks, each with a different size. Multiple limiting blocks are installed one at a time to limit the push rod to different positions, resulting in different spacing between the two magnet groups. This spacing is used to fill the adhesive layer.

[0010] Furthermore, the limiting block is detachably installed at the end of the push rod away from the fixture, so that when the push rod is horizontally close to the fixture, the limiting block can abut against the outside of the fixture to restrict the push rod from continuing to move in the direction of the machining groove.

[0011] Furthermore, the end of the push rod away from the fixture is connected to the first driving device. The first driving device is used to drive the push rod to move horizontally closer to or away from the fixture. The limiting block is detachably mounted on the first driving device and is located on the side of the first driving device facing the fixture.

[0012] Furthermore, the pressure head is connected to a second driving device, which is used to drive the pressure head to move up and down. When the pressure head is driven to descend, a certain distance is maintained between the bottom surface of the pressure head and the top surface of the magnet assembly, so as to limit the magnet assembly from jumping up, or to make the bottom surface of the pressure head fit against the top surface of the magnet assembly, so that the top surfaces of multiple magnet assemblies remain flush.

[0013] Furthermore, it also includes a controller. The first drive device and the second drive device are electrically connected to the controller. The controller is used to control the first drive device to drive the push rod to move horizontally, or to control the second drive device to drive the drawing to move up and down.

[0014] Furthermore, the magnet assembly includes at least one single magnet, and when the magnet assembly includes multiple single magnets, the multiple single magnets are fixedly bonded together.

[0015] Furthermore, it also includes a fixture slot for placing the fixture, such that when the fixture is placed in the fixture slot, the sidewall of the fixture slot is limited to the outer side of the fixture to limit the lateral movement of the fixture. The sidewall of the fixture slot is formed with a guide hole located in the extension direction of the machining slot for the push rod to pass through.

[0016] Furthermore, the top surface of the magnet assembly is a first inclined surface, and the bottom surface of the pressure head is a second inclined surface. The first inclined surface and the second inclined surface are parallel, and the second inclined surface is used to adhere to the first inclined surface.

[0017] Furthermore, there are two push rods, which are located on the left and right sides of the fixture, respectively. Each push rod corresponds to a magnet group, and the two push rods push against the magnet group from the left and right sides of the processing groove, respectively.

[0018] The beneficial effects of this utility model after adopting the above solution are as follows: by limiting the pressure head on the top side of the magnet, the magnet assembly can be prevented from jumping upwards, or the top surfaces of the two magnet assemblies can be made flush; the processing groove extends laterally, and when the magnet assembly is placed in the processing groove, the magnet assembly can slide along the extension direction of the processing groove and approach and adhere to each other; the push rod extends laterally and faces the processing groove, and at the same time, the push rod can move horizontally towards or away from the fixture. When it is horizontally approaching the fixture, it can push the magnet assembly from one side, so that the magnet assembly is close to another magnet assembly; in addition, by setting a limiting block, and the limiting block is located on one side of the fixture, it is used to limit the push rod to the side facing the fixture, so as to restrict the push rod from continuing to move towards the processing groove. Moreover, there are multiple limiting blocks, and each limiting block has a different size. By installing different limiting blocks, the push rod can be limited to different positions, thereby ensuring the outer dimensions of the two magnet assemblies and keeping the gap between the two magnet assemblies at a predetermined size. This can control the thickness of the adhesive layer between the two magnet assemblies and avoid the risk of the magnet assembly cracking due to the adhesive layer being too thin. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the elevation structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0022] Figure 4 This is a schematic diagram of the push rod movement of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the limiting block of this utility model pressed against the fixture groove.

[0024] Figure 6 This is a schematic diagram of the structure of the pressure head of this utility model being limited to the top side of the magnet assembly.

[0025] Label Explanation:

[0026] 100-Magnet assembly, 110-First inclined plane, 1-Jig, 2-Indenter, 3-Push rod, 4-Limit block, 5-Machining groove, 6-Jig groove, 7-Guide hole, 8-First driving device, 9-Second driving device, 10-Controller, 21-Second inclined plane, 81-First fixing plate, 82-First telescopic cylinder, 91-Second fixing plate, 92-Second telescopic cylinder. Detailed Implementation

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Unless otherwise expressly defined, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" in the claims, description, and accompanying drawings of this utility model is merely for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the specific protection scope of this utility model.

[0029] like Figures 1 to 6 As shown, this utility model provides a device for controlling the adhesive layer thickness when bonding irregularly shaped magnetic components. Each time, two magnet groups 100 are bonded, the external dimensions achieved after the two magnet groups 100 are bonded are used as the standard. By controlling the external dimensions, the adhesive layer thickness between the two magnet groups 100 is controlled so that the adhesive layer thickness meets the standard.

[0030] Key points combined Figure 1-3As shown, the fixture includes a jig 1, a pressure head 2, a push rod 3, and a limiting block 4. A machining groove 5 is formed on the jig 1, extending laterally. The direction of the machining groove 5 is defined as left-right. Two magnet assemblies 100 are placed inside the machining groove 5, spaced apart, and can slide laterally along the direction of the machining groove 5 to approach and adhere to each other. The pressure head 2 is located directly above the machining groove 5 and can move up and down. When it descends to approach the machining groove 5, it is limited to the top side of the magnet assemblies 100. It can either be attached to the top surface of the magnet assemblies 100 or maintain a certain distance from the top surface of the magnet assemblies 100. When the pressure head 2 is attached to the top surface of the magnet assemblies 100, it can keep the top surfaces of the two or more magnet assemblies 100 flush. When the pressure head 100 maintains a certain distance from the top surface of the magnet assemblies 100, this distance is designed not to affect the lateral sliding of the magnets, thus preventing the magnet assemblies 100 from jumping upwards. The push rod 3 extends laterally and is located on one side of the jig 1, and can move horizontally towards or away from the jig 1 to... When approaching the fixture 1, the magnet group 100 is pushed from one side along the extension direction of the processing groove 5, so that the magnet group 100 is close to another magnet group 100; the limiting block 4 is located on one side of the fixture 1, so as to limit the push rod 3 towards the fixture 1 when it approaches the processing groove 5 horizontally, so as to limit the push rod 3 from continuing to move towards the processing groove 5. There are multiple limiting blocks 4, each of different sizes. Multiple limiting blocks 4 are installed one by one, so that the push rod 3 is limited to different positions, thereby making the distance between the two magnet groups 100 different. This gap is used to fill the adhesive layer. Specifically, the magnet group 100 contains at least one single magnet. When the magnet group 100 contains multiple single magnets, the multiple single magnets are fixedly bonded. Therefore, the sizes of different magnet groups 100 are different. Different limiting blocks are selected according to the different external dimensions achieved after bonding two magnet groups 100 of different sizes, so that the adhesive layer bonded between different magnet groups 100 is controlled within a predetermined size.

[0031] Key points combined Figure 6 As shown, the top surface of the magnet assembly 100 is a first inclined surface 110, and the bottom surface of the pressure head 2 is a second inclined surface 21. The first inclined surface 110 and the second inclined surface 21 are parallel. The second inclined surface 21 is used to fit onto the first inclined surface 110 so that the top surfaces of the multiple first magnets 110 are flush. Of course, in other embodiments, the top surface of the magnet assembly 110 can also be other structures, without specific limitations.

[0032] In this specific embodiment, the processing groove 5 is arranged horizontally through, and there are two push rods 3. The two push rods 3 are located on the left and right sides of the fixture 1, respectively. One push rod 3 pushes against one magnet group 100. The two push rods 3 approach or move away from the magnet group 100 from both ends of the processing groove 5. Of course, there can also be only one push rod 3. When there is only one push rod 3, the side wall of the processing groove 5 away from the push rod 3 is not through. This side wall can limit one of the magnet groups 100. The side wall of the processing groove 5 facing the push rod 3 can be through or not through, as long as the top side of the magnet group 100 extends upward from the top side of the processing groove 5. In this way, when the push rod 3 moves horizontally, it can push against the magnet group 100. The push rod 3 can also push against one of the magnet groups 100, so that the magnet group 100 is close to the other magnet group 100 and is bonded and fixed.

[0033] Preferably, the limiting block 4 is detachably installed at the end of the push rod 3 away from the fixture 1, so that when the push rod 3 is horizontally close to the fixture 1, the limiting block 4 can press against the outside of the fixture 1 to limit the push rod 3 from continuing to move towards the processing groove 5. The movement distance of the push rod 3 can be limited by replacing the limiting block 4 of different specifications, so that the spacing between the two magnet groups 100 is different.

[0034] Key points combined Figure 2As shown, the end of the push rod 3 facing away from the fixture 1 is connected to the first driving device 8. The first driving device 8 is used to drive the push rod 3 to move horizontally closer to or away from the fixture 1. The limiting block 4 is detachably mounted on the first driving device 8. Specifically, the first driving device 8 includes a first fixed plate 81 and a first telescopic cylinder 82. The telescopic end of the first telescopic cylinder 82 is connected to the first fixed plate 81. The telescopic end of the first telescopic cylinder 82 extends and retracts horizontally to drive the first fixed plate 81 to extend and retract horizontally. The first telescopic cylinder 82 can be any existing linear drive mechanism, such as a telescopic cylinder. It can also be a linear motor, etc., without specific restrictions. The push rod 3 is mounted on the first fixed plate 81 at one end away from the fixture 1. It can be fixed to the first fixed plate 81 by snap-fit ​​or by bolts, etc., without specific restrictions. The limiting block 4 is detachably connected to the first fixed plate 81 and is located on the side of the first drive device 8 facing the fixture 1. Specifically, the limiting block 4 has a through hole. During installation, the limiting block 4 is placed on the push rod 3, and the push rod 3 is passed laterally through the through hole of the limiting block 4. Then the limiting block 4 is detachably fixed to the first fixed plate 81. However, the limiting block 4 can also be detachably fixed to the first fixing plate 81 in other ways. In use, the limiting block 4 of different sizes can be replaced according to the required spacing between the two magnet groups 100. When there is only one push rod 3, the telescopic end of the first telescopic cylinder 82 extends and retracts, causing the first fixing plate 81 to drive the push rod 3 and the limiting block 4 to move horizontally closer to the fixture. During the movement, the push rod 3 is inserted into the processing groove 5, pushing the magnet group 100 from one side toward the other magnet group 100. The other magnet group 100 is then limited in the processing groove. 5. Keep the side wall stationary until the limiting block 4 is pressed against the outside of the fixture 1, preventing the push rod 3 from continuing to push the magnet assembly 100 horizontally, maintaining the predetermined gap between the two magnet assemblies 100, and ensuring the thickness of the adhesive layer filling the gap between the two magnet assemblies 100 is the predetermined size; when there are two push rods 3, the two push rods 3 approach the processing groove 5 horizontally from the left and right sides of the fixture respectively, and push the two magnet assemblies 100 respectively, bringing the two magnet assemblies 100 closer to each other until the two limiting blocks 4 on the left and right sides are pressed against the left and right sides of the fixture 1 respectively (e.g. Figure 5 As shown), the two magnet groups 100 no longer slide. At this time, the distance between the two magnet groups 100 remains unchanged, so the thickness of the adhesive layer filling between the two magnet groups 100 can also be kept fixed to achieve the expected thickness, effectively controlling the thickness of the adhesive layer between the two magnet groups 100.

[0035] Key points combined Figure 3As shown, the pressure head 2 is connected to a second driving device 9. The second driving device 9 is used to drive the pressure head 2 to move up and down, so that when the pressure head 2 is driven to descend, a certain distance is maintained between the bottom surface of the pressure head 2 and the top surface of the magnet assembly 100, so as to limit the magnet assembly 100 from jumping up, or to make the bottom surface of the pressure head 2 fit against the top surface of the magnet assembly 100, so that the top surfaces of the multiple magnet assemblies 100 are kept flush. Specifically, the second driving device 9 includes a second fixed plate 91 and a second telescopic cylinder 92. The second fixed plate 91 is fixed to the telescopic end of the second telescopic cylinder 92. The telescopic end of the second telescopic cylinder 92 extends and retracts up and down, driving the second fixed plate 91 to move up and down. The pressure head 2 is installed at the bottom of the second fixed plate 91 and moves up and down with the second fixed plate 91. The second telescopic cylinder 92 can be any existing linear drive mechanism, such as a telescopic cylinder, or a linear motor, etc., without specific limitations.

[0036] It also includes a controller 10. The first drive device 8 and the second drive device 9 are electrically connected to the controller 10. The controller 10 is used to control the first drive device 8 to drive the push rod 3 to move horizontally, or to control the second drive device 9 to drive the pressure head 2 to move up and down. Specifically, the controller 10 can be any existing PLC controller. The controller 10 can control the pressure head 2 to descend to a predetermined height. This is existing technology. Specifically, a position sensor (not shown in the figure) can be set. The position sensor is communicatively connected to the controller 10. When the pressure head 2 descends to the point where it is detected by the position sensor, the controller 10 can control the second drive device 9 to stop moving, or when the pressure head 2 descends to the point where it is in contact with the top surface of the magnet assembly 100, it can control the second drive device 9 to stop moving, so that the pressure head 2 stops descending.

[0037] In this specific embodiment, each fixture 1 has multiple processing slots 5, which are spaced apart. Each processing slot 5 corresponds to one push rod 3 or two push rods 3. For example, multiple push rods 3 located on the left or right side of the fixture are all installed on the first fixed plate 81. When the extension end of the first telescopic cylinder 82 extends or retracts, it can simultaneously drive all the push rods 3 on the first fixed plate 81 to move. Correspondingly, the number of pressure heads 2 corresponds to the number of processing slots 5. Each processing slot 5 corresponds to one pressure head 2, and multiple pressure heads 2 are all installed at the bottom of the second fixed plate 91, so that multiple pressure heads 2 move up and down with the second fixed plate 91 at the same time. In this way, multiple sets of magnet groups 100 can be processed at the same time.

[0038] Key points combined Figures 4 to 5As shown, it also includes a fixture groove 6, which is used to place the fixture 1. When the fixture 1 is placed in the fixture groove 6, the side wall of the fixture groove 6 is limited to the outer side of the fixture 1 to limit the lateral movement of the fixture 1. The side wall of the fixture groove 6 is formed with a guide hole 7, which is located in the extension direction of the processing groove 5 and is used for the push rod 3 to pass through. It can guide the movement of the push rod 3 and prevent the push rod 3 from being too long and bending during the movement and deviating from the predetermined movement trajectory.

[0039] In use, when the size of the magnet assembly 100 is small, a smaller limiting block 4 can be selected, so that the push rod 3 can move a longer distance to push the first magnet 110 to the predetermined position; when the size of the magnet assembly 100 is large, a larger limiting block 4 is selected, so that the push rod 3 can move a shorter distance. The specific size of the limiting block 4 is selected according to the specific size of the magnet assembly 100 and the reserved glue gap, so as to control the final shape size of the magnet and make the glue layer thickness reach the expected thickness.

[0040] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.

Claims

1. An apparatus for controlling the thickness of an adhesive layer of a profiled magnetic assembly, characterized by: Including jig (1), pressure head (2), push rod (3) and limit block (4); The jig (1) is formed with a processing groove (5), the processing groove (5) extends horizontally, two magnet groups (100) are placed in the processing groove (5), the two magnet groups (100) are arranged at intervals and can slide horizontally along the extension direction of the processing groove (5) to approach each other to be bonded; The pressure head (2) is located directly above the processing groove (5) and can be raised and lowered to be limited on the top side of the magnet group (100) when it is lowered to approach the processing groove (5); The push rod (3) extends horizontally and is located on one side of the jig (1), which can approach or move away from the jig (1) horizontally, so that when it approaches the jig (1), it pushes the magnet group (100) from one side of the magnet group (100) along the extension direction of the processing groove (5), so that the magnet group (100) approaches the other magnet group (100); The limit block (4) is located on one side of the jig (1) to limit the side of the push rod (3) facing the jig (1) when the push rod (3) approaches the processing groove (5) horizontally, so as to limit the push rod (3) from continuing to move towards the processing groove (5), the limit block (4) has multiple sizes, and multiple limit blocks (4) are selectively installed to limit the push rod (3) at different positions, so that the distance between the two magnet groups (100) is different, and the distance is used to fill the glue layer.

2. The apparatus for controlling the thickness of the adhesive layer of a profile magnetic assembly according to claim 1, wherein: The limit block (4) is detachably installed on the end of the push rod (3) away from the jig (1), so that when the push rod (3) approaches the jig (1) horizontally, the limit block (4) can abut against the outside of the jig (1) to limit the push rod (3) from continuing to move towards the processing groove (5).

3. The apparatus for controlling the thickness of the adhesive layer of a profiled magnetic assembly according to claim 2, characterized in that: The end of the push rod (3) away from the jig (1) is connected with the first driving device (8), and the first driving device (8) is used to drive the push rod (3) to approach or move away from the jig (1) horizontally, and the limit block (4) is detachably installed on the first driving device (8) and located on the side of the first driving device (8) facing the jig (1).

4. The apparatus for controlling the thickness of the adhesive layer of a profiled magnetic assembly according to claim 3, characterized in that: The pressure head (2) is connected with the second driving device (9), and the second driving device (9) is used to drive the pressure head (2) to rise and fall, so that when the pressure head (2) is driven to descend, the distance between the lower bottom surface of the pressure head (2) and the top surface of the magnet group (100) can be kept, so as to limit the magnet group (100) from jumping upward, or the lower bottom surface of the pressure head (2) is attached to the top surface of the magnet group (100), so that the top surfaces of the multiple magnet groups (100) are kept flush.

5. The apparatus for controlling the thickness of the adhesive layer of a profiled magnetic assembly according to claim 4, characterized in that: It also includes a controller (10), the first driving device (8) and the second driving device (9) are electrically connected with the controller (10) respectively, and the controller (10) is used to control the first driving device (8) to drive the push rod (3) to move horizontally, or control the second driving device (9) to drive the pressure head (2) to rise and fall.

6. The apparatus for controlling the thickness of the adhesive layer of a profile magnetic assembly according to claim 1, wherein: The magnet group (100) contains at least one single magnet, and when the magnet group (100) contains multiple single magnets, the multiple single magnets are fixedly bonded.

7. The apparatus for controlling the thickness of the adhesive layer of a profile magnetic assembly according to claim 1, wherein: Also include the tool slot (6), the tool slot (6) is used to place the tool (1), so that the tool slot (6) side wall limits the outside of the tool (1) when the tool (1) is placed in the tool slot (6), to limit the lateral movement of the tool (1), the tool slot (6) side wall is formed with a guide hole (7), the guide hole (7) is located in the extension direction of the processing groove (5), for the push rod (3) to pass through.

8. The apparatus for controlling the thickness of the adhesive layer of a profile magnetic assembly according to claim 1, wherein: The top surface of the magnet group (100) is a first inclined surface (110), and the lower bottom surface of the pressure head (2) is a second inclined surface (21). The first inclined surface (110) is parallel to the second inclined surface (21), and the second inclined surface (21) is used to fit on the first inclined surface (110).

9. The apparatus for controlling the thickness of the adhesive layer of a profile magnetic assembly according to claim 1, wherein: The number of the push rod (3) is two, and the two push rods (3) are respectively located on the left and right sides of the tool (1). One push rod (3) corresponds to one magnet group (100), and the two push rods (3) respectively push the magnet group (100) from the left and right sides of the processing groove (5).

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