A neodymium-iron-boron magnet bonding device

Abstract

The application discloses a neodymium-iron-boron magnet same-grade bonding device and belongs to the technical field of neodymium-iron-boron processing. The device comprises a workbench, a semicircular first fixing ring and a second fixing ring are fixedly installed on the workbench, a gap is arranged between the first fixing ring and the second fixing ring, the first fixing ring and the second fixing ring are respectively used for limiting neodymium-iron-boron magnets, a supporting column is rotatably installed on the workbench, a discharge pipe is fixedly arranged on the supporting column in a radial direction, a discharge port is arranged on one end of the discharge pipe and faces downward, the discharge port is coaxially arranged with the first fixing ring and is located above the first neodymium-iron-boron magnet, the rotating supporting column can move the discharge pipe out of the gap, a radial channel is coaxially and communicatively arranged on the supporting column with the discharge pipe, a piston is slidably installed in the radial channel, and the quantitatively sliding piston can quantitatively make the adhesive in the radial channel flow out of the discharge port. The device can accurately control the dosage of the adhesive flowing out of the discharge port and improve the bonding thickness uniformity.

Description

Technical Field

[0001] This invention belongs to the field of neodymium iron boron processing technology, specifically relating to a neodymium iron boron magnet homogeneous bonding device. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets are widely used in various high-performance motors, sensors, and electronic devices due to their excellent magnetic properties. In certain specific applications, it is necessary to bond multiple cylindrical NdFeB magnets with their poles facing each other to achieve specific magnetic field distributions or structural design requirements.

[0003] Existing technologies, such as Chinese Patent Publication No. CN224595364U, disclose an auxiliary tooling for bonding two magnets of the same pole. This tooling, through the coordinated operation of an upper cover structure, a lower cover structure, and a quick-release clamp, can bond two magnets of the same pole. However, in practice, this technology requires manual application of a strong adhesive to the bonding surfaces before bonding. Because manual application of adhesive is difficult to precisely control the dosage, it easily leads to uneven adhesive application and inconsistent bonding thickness.

[0004] Therefore, it is necessary to propose a bonding device for neodymium iron boron magnets to solve the above problems. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a neodymium iron boron magnet bonding device to solve the problem that in the prior art, it is difficult to accurately control the dosage of adhesive when manually applying it, which easily leads to uneven application of adhesive and inconsistent bonding thickness.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a bonding device for NdFeB magnets, comprising a worktable. A first, semi-circular fixing ring and a second, semi-circular fixing ring located above the first fixing ring are fixedly mounted on the worktable. A gap exists between the first and second fixing rings. The first and second fixing rings are used to limit the position of the lower NdFeB magnet and the upper NdFeB magnet, respectively. A support column is rotatably mounted on the worktable. A discharge pipe is radially fixed on the support column. One end of the discharge pipe has a downward-facing discharge port, which is coaxial with the first fixing ring and located above the first NdFeB magnet. Rotating the support column allows the discharge pipe to move out of the gap. A radial channel, coaxial with and connected to the discharge pipe, is provided on the support column. A piston is slidably mounted within the radial channel. A metering sliding piston allows a metered amount of adhesive to flow out of the discharge port from the radial channel.

[0007] Furthermore, the support column is radially threaded with a screw rod coaxially arranged with the radial channel. The screw rod is rotatably connected to the piston. Rotating the screw rod allows the piston to slide along the radial channel. The support column is provided with a storage chamber for storing adhesive, and the storage chamber is in communication with the radial channel.

[0008] Furthermore, a first one-way valve is provided between the radial channel and the discharge pipe to allow the adhesive in the radial channel to flow unidirectionally into the discharge pipe, and a second one-way valve is installed between the storage chamber and the radial channel to allow the adhesive in the storage chamber to flow unidirectionally into the radial channel. When the piston is moved closer to the discharge port by rotating the screw, the adhesive in the radial channel can be squeezed out of the discharge port. When the piston is moved away from the discharge port by rotating the screw, the adhesive in the storage chamber can be sucked into the radial channel.

[0009] Furthermore, a drive mechanism for outputting linear motion is installed on the worktable. A push rod is fixedly connected to the output end of the drive mechanism. The push rod is coaxially arranged with the first fixed ring and is used to push the second NdFeB magnet downward to make the two NdFeB magnets close together. A drive ring is fixedly connected to the push rod through a connector. The drive ring is coaxially arranged with the support column. The side wall of the drive ring is provided with a strip groove and an arc groove continuously arranged with the strip groove. The discharge tube is slidably arranged in the strip groove and can slide into the arc groove. After the adhesive is quantitatively extruded to the top wall of the first NdFeB magnet, the push rod squeezes the second NdFeB magnet and drives the drive ring to move downward. Before the second NdFeB magnet contacts the discharge tube, the discharge tube slides from the strip groove to the arc groove. The arc groove squeezes the discharge tube to drive the support column to rotate, which can make the discharge tube move out of the gap.

[0010] Furthermore, the drive ring is provided with a notch for avoiding the screw during the rotation of the support column.

[0011] Furthermore, a gear is fixedly connected to the support column end extending from the screw, and a connecting plate is fixedly connected to the drive ring. A rack that can mesh with the gear is fixedly connected to the connecting plate. The width of the rack is less than the length of the gear. When the drive ring moves downward, it can drive the rack to move downward and mesh with the gear to drive the gear to rotate, thereby driving the piston to move towards the discharge port and extruding the adhesive in the radial channel into the discharge port. The rack continues to move downward until it disengages from the gear vertically. Then, the discharge pipe slides from the strip groove into the arc groove. The arc groove squeezes the discharge pipe to drive the support column to rotate, so that the discharge pipe moves out of the gap.

[0012] Furthermore, an arc-shaped guide rail is fixedly installed on the worktable. The arc-shaped guide rail is coaxially arranged with the support column. An arc-shaped guide rod capable of circular motion around the axis of the support column is slidably installed on the arc-shaped guide rail. A C-shaped plate is fixedly connected to one end of the arc-shaped guide rod. The first arc-shaped arm of the two arc-shaped arms on the C-shaped plate is fixed to the arc-shaped guide rod. A gap is provided between the second arc-shaped arm of the two arc-shaped arms on the C-shaped plate and the guide rod. When the discharge pipe is located in the strip groove, the discharge port is directly opposite the center of the first NdFeB magnet. At this time, the discharge port abuts against the second arc-shaped arm, and the adhesive flowing out of the discharge port can fall onto the first NdFeB magnet through the gap. When the discharge pipe rotates along the arc-shaped groove, the discharge pipe drives the discharge port to make circular motion around the support column, so that the discharge port moves to abut against the first arc-shaped arm to push the arc-shaped guide rod to move out of the gap along the arc-shaped guide rail.

[0013] Furthermore, a first receiving plate is fixedly installed inside the first fixing ring. The first receiving plate is provided with a first receiving groove for receiving the first NdFeB magnet. A first arc-shaped plate is fixedly installed on the first receiving plate. The first arc-shaped plate cooperates with the first fixing ring to restrict the horizontal displacement of the first NdFeB magnet. A second receiving plate is slidably installed inside the second fixing ring. The second receiving plate is provided with a second receiving groove for fitting onto the top wall of the second NdFeB magnet. A second arc-shaped plate is fixedly installed on the second receiving plate. The first arc-shaped plate and the second arc-shaped plate are slidably connected. A sliding groove is provided on the first arc-shaped plate. A locking block is slidably connected in the sliding groove. An elastic element is fixedly connected between the locking block and the inner wall of the sliding groove. A locking groove is provided on the second arc-shaped plate that can cooperate with the locking block.

[0014] The beneficial effects of this invention are as follows: 1. This invention, through the design of the rack length, can accurately control the dosage of adhesive flowing out of the outlet by measuring the number of rotations of the screw, thereby improving the uniformity of the bonding thickness. 2. This invention applies pressure to the bonded NdFeB magnets by closing the first and second receiving plates, ensuring consistent bonding thickness through a uniform pressure holding time. Furthermore, the pressure holding process does not affect the subsequent bonding of NdFeB magnets, thus improving bonding efficiency. The engagement of the locking block and the locking slot ensures consistent height between the first and second receiving plates, thereby guaranteeing consistent height of the bonded NdFeB magnets, and ensuring consistent bonding thickness for two NdFeB magnets of the same specification.

[0015] 3. The present invention uses an arc-shaped guide rod to catch the adhesive residue at the discharge port, thus preventing the residual adhesive from dripping during the rotation of the discharge port and affecting the control of the adhesive dosage.

[0016] 4. The present invention uses a drive mechanism to push the push rod down, which can automatically complete the process of injecting adhesive, removing the discharge tube and bonding NdFeB, thereby improving the bonding efficiency. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the installation of two neodymium iron boron magnets according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the installation of the drive ring according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation of the arc-shaped guide rod according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of the installation of the support column according to an embodiment of the present invention.

[0018] The following components are labeled in the attached diagram: workbench 1, first fixing ring 2, gap 201, first neodymium iron boron magnet 202, first receiving plate 203, first receiving groove 204, first arc-shaped plate 205, slide groove 206, snap-fit ​​block 207, elastic element 208, second fixing ring 3, second neodymium iron boron magnet 301, second receiving plate 302, second receiving groove 303, second arc-shaped plate 304, snap-fit ​​groove 305, support column. 4. Discharge pipe 401, discharge port 402, radial channel 403, piston 404, screw 405, storage chamber 406, gear 407, push rod 5, connector 501, drive ring 502, strip groove 503, arc groove 504, notch 505, connecting plate 506, rack 507, arc guide rail 6, arc guide rod 601, C-shaped plate 602, first arc arm 603, second arc arm 604. Detailed Implementation

[0019] like Figures 1-5 As shown, this invention discloses a neodymium iron boron magnet co-adhesion device, comprising: a worktable 1, on which a semi-circular first fixing ring 2 and a semi-circular second fixing ring 3 located above the first fixing ring 2 are fixedly installed, with a gap 201 between the first fixing ring 2 and the second fixing ring 3, the first fixing ring 2 and the second fixing ring 3 being used to limit the position of the lower first neodymium iron boron magnet 202 and the upper second neodymium iron boron magnet 301, respectively; a drive mechanism (not shown in the figure) for outputting linear motion is installed on the worktable 1, and a push rod 5 is fixedly connected to the output end of the drive mechanism, the push rod 5 being coaxially arranged with the first fixing ring 2, and being used to push the second neodymium iron boron magnet 301 downward to make the two neodymium iron boron magnets close together.

[0020] like Figure 5A support column 4 is rotatably mounted on the workbench 1. A discharge pipe 401 is radially fixed on the support column 4. One end of the discharge pipe 401 is provided with a downward-facing discharge port 402. The discharge port 402 is coaxially arranged with the first fixing ring 2 so that the adhesive can flow out from the discharge port 402 to the center of the top surface of the neodymium iron boron magnet located below.

[0021] The support column 4 is provided with a radial channel 403 coaxial with and connected to the discharge pipe 401. A first one-way valve (not shown in the figure) is provided between the radial channel 403 and the discharge pipe 401 to allow the adhesive in the radial channel 403 to flow unidirectionally into the discharge pipe 401. A piston 404 is slidably installed in the radial channel 403. A screw 405 coaxial with the radial channel 403 is radially threaded onto the support column 4. The screw 405 is rotatably connected to the piston 404, and rotating the screw 405 allows the piston 404 to slide along the radial channel 403. The support column 4 is provided with a storage chamber 406 for storing adhesive, and the storage chamber 406 is connected to the radial channel 403. A second one-way valve (not shown in the figure) is installed between 06 and the radial channel 403 to allow the adhesive in the storage chamber 406 to flow unidirectionally into the radial channel 403; wherein, the first one-way valve and the second one-way valve are conventional technical means in the art, and will not be illustrated or described in detail here; when the piston 404 is moved closer to the discharge port 402 by rotating the screw 405, the adhesive in the radial channel 403 can be squeezed out of the discharge port 402; when the piston 404 is moved away from the discharge port 402 by rotating the screw 405, the adhesive in the storage chamber 406 can be sucked into the radial channel 403; this solution can accurately control the dosage of adhesive flowing out of the discharge port 402 by the number of rotations of the metering screw 405.

[0022] like Figure 3A drive ring 502 is fixedly connected to the push rod 5 via a connector 501. The drive ring 502 is coaxially arranged with the support column 4. The side wall of the drive ring 502 is provided with a strip groove 503 and an arc groove 504 continuously arranged with the strip groove 503. The discharge pipe 401 is slidably arranged in the strip groove 503 and can slide into the arc groove 504. After the adhesive is quantitatively extruded to the top wall of the first NdFeB magnet 202, the push rod 5 presses the second NdFeB magnet 301 and drives the drive ring. 502 moves downward; before the second NdFeB magnet 301 contacts the discharge pipe 401, the discharge pipe 401 slides from the strip groove 503 into the arc groove 504, and the arc groove 504 squeezes the discharge pipe 401 to drive the support column 4 to rotate, thereby causing the discharge pipe 401 to move out of the gap 201; so that the second NdFeB magnet 301 and the first NdFeB magnet 202 can close and bond together; the drive ring 502 is provided with a notch 505 for avoiding the screw 405 during the rotation of the support column 4.

[0023] like Figure 5 A support column 4 extends from the screw 405, and a gear 407 is fixedly connected to one end. A connecting plate 506 is fixedly connected to the drive ring 502, and a rack 507 that meshes with the gear 407 is fixedly connected to the connecting plate 506. The width of the rack 507 is less than the length of the gear 407. As the drive ring 502 moves downward, it drives the rack 507 to move downward until it meshes with the gear 407. The rack 507 continues to move downward to drive the gear 407 to rotate, thereby driving the piston 404 to move towards the discharge port 402. The adhesive in the radial channel 403 is squeezed out of the outlet 402; the rack 507 continues to move down until the rack 507 and the gear 407 are separated vertically, and the discharge tube 401 slides from the strip groove 503 into the arc groove 504. The arc groove 504 squeezes the discharge tube 401 to drive the support column 4 to rotate, so that the discharge tube 401 moves out of the gap 201. At this time, the gear 407 is separated from the rack 507 in the circumferential direction; then the push rod 5 continues to move down so that the second neodymium iron boron magnet 301 and the first neodymium iron boron magnet 202 are closed and bonded.

[0024] like Figure 4An arc-shaped guide rail 6 is fixedly installed on the workbench 1. The arc-shaped guide rail 6 is coaxially arranged with the support column 4. An arc-shaped guide rod 601, capable of circular motion around the axis of the support column 4, is slidably installed on the arc-shaped guide rail 6. One end of the arc-shaped guide rod 601 is fixedly connected to a C-shaped plate 602. The first arc-shaped arm 603 of the two arc-shaped arms on the C-shaped plate 602 is fixed to the arc-shaped guide rod 601. A gap is provided between the second arc-shaped arm 604 of the two arc-shaped arms on the C-shaped plate 602 and the guide rod 601. When the discharge pipe 401 is located in the strip groove 503, the discharge port 402 is directly opposite the center of the first neodymium iron boron magnet 202. At this time, the discharge port 402 abuts against the second arc-shaped arm 604, and the material is discharged. The adhesive flowing out of outlet 402 can fall onto the first neodymium iron boron magnet 202 through the gap; when the discharge pipe 401 rotates along the arc groove 504, the discharge pipe 401 drives the discharge outlet 402 to make a circular motion around the support column 4; the discharge outlet 402 moves to abut against the first arc arm 603. At this time, the discharge outlet 402 is located above the arc guide rod 601. The arc guide rod 601 receives the adhesive remaining in the discharge outlet 402, preventing the residual adhesive from dripping during the rotation of the discharge outlet 402, which would affect the control of the adhesive dosage; as the discharge pipe 401 continues to rotate and the discharge outlet 402 abuts against the first arc arm 603, the arc guide rod 601 is driven to move out of the gap 201 along the arc guide rail 6.

[0025] like Figure 2A first receiving plate 203 is slidably installed inside the first fixing ring 2. The first receiving plate 203 has a first receiving groove 204 for receiving the first neodymium iron boron magnet 202. A first arc-shaped plate 205 is fixedly installed on the first receiving plate 203. The first arc-shaped plate 205 cooperates with the first fixing ring 2 to restrict the horizontal displacement of the first neodymium iron boron magnet 202. A second receiving plate 302 is slidably installed inside the second fixing ring 3. The second receiving plate 302 has a second receiving groove 303 for fitting onto the top wall of the second neodymium iron boron magnet 301. A second arc-shaped plate 304 is fixedly installed on the second receiving plate 302. The first arc-shaped plate 205 and the second arc-shaped plate 304 are slidably connected. The first arc-shaped plate 205 has a sliding groove 206, and a locking block 207 is slidably connected within the sliding groove 206. An elastic element 208 is fixedly connected between the snap-fit ​​block 207 and the inner wall of the slide groove 206. The elastic element 208 includes, but is not limited to, a spring. The second arc-shaped plate 304 is provided with a slot 305 that can cooperate with the snap-fit ​​block 207. When the second support plate 302 is pressed downward so that the second support plate 302 abuts against the top wall of the first arc-shaped plate 205, the snap-fit ​​block 207 corresponds to the slot 305, and the snap-fit ​​block 207 springs into the slot 305 under the action of the elastic element 208 to limit the axial displacement of the first support plate 203 and the second support plate 302, thereby fixing the first fixing ring 2 and the second fixing ring 3 for pressure holding. Then, the first support plate 203 and the second support plate 302 slide out from the first fixing ring 2. After the pressure holding time is preset, the snap-fit ​​block 207 is detached from the slot 305 by sliding, thereby removing the bonded neodymium iron boron magnet. This solution uses the closing of the first receiving plate 203 and the second receiving plate 302 to maintain pressure on the bonded NdFeB magnets, ensuring consistent bonding thickness through a uniform pressure holding time. Furthermore, the pressure holding process does not affect the subsequent bonding of NdFeB magnets, improving bonding efficiency. The cooperation between the locking block 207 and the locking slot 305 ensures that the height between the first receiving plate 203 and the second receiving plate 302 is consistent, thereby guaranteeing consistent height of the bonded NdFeB magnets, and thus ensuring consistent bonding thickness for two NdFeB magnets of the same specification.

[0026] The bonding method of the present invention includes the following steps: S1. Installation process: Place the first NdFeB magnet 202 to be bonded into the first receiving groove 204 on the first receiving plate 203, and place the second NdFeB magnet 301 to be bonded into the second receiving groove 303 on the second receiving plate 302. Then, slide the overall structure composed of the first receiving plate 203 and the second receiving plate 302 into the first fixing ring 2 and keep it fixed. At this time, the first fixing ring 2 cooperates with the first arc plate 205 to limit the first NdFeB magnet 202; the second fixing ring 3 cooperates with the second arc plate 304 to limit the second NdFeB magnet 302. At this time, the first NdFeB magnet 202 and the second NdFeB magnet 302 are coaxially arranged, and due to the principle of like poles repulsion, the second NdFeB magnet 302 is in a floating state. S2. Bonding process: This specifically includes: S2.1 Discharge Step: The push rod 5 is driven down by the drive mechanism. The push rod 5 pushes the second receiving plate 302 down. During the downward movement, the drive ring 502 is driven down so that the discharge pipe 401 slides along the strip groove 503 and drives the rack 507 down to mesh with the gear 407 so that the gear 407 rotates. This drives the piston 404 to move closer to the discharge port 402, squeezing the adhesive in the radial channel 403 out of the discharge port 402 until the rack 507 and the gear 407 are vertically separated. S2.2, Discharge pipe removal step: The drive mechanism continues to drive the push rod 5 to press down. At this time, the discharge pipe 401 slides from the strip groove 503 into the arc groove 504. The extrusion of the arc groove 504 drives the discharge pipe 401 to rotate, thereby driving the support column 4 to rotate. When the discharge pipe 401 rotates, the discharge port 402 moves from the side wall of the second arc arm 604 to the side wall of the first arc arm 603 and falls above the arc guide rod 601. The discharge pipe 401 continues to rotate, which pushes the first arc arm 603 to drive the arc guide rod 601 to move out of the gap 201 along the arc guide rail 6. S2.3, Bonding Step: The push rod 5 is driven down by the drive mechanism to press down the second receiving plate 302 so that the second receiving plate 302 abuts against the top wall of the first arc plate 205. At this time, the snap-fit ​​block 207 corresponds to the snap-fit ​​groove 305, and the snap-fit ​​block 207 is pushed into the snap-fit ​​groove 305 under the action of the elastic member 208 to limit the axial displacement of the first receiving plate 203 and the second receiving plate 302, thereby fixing the first fixing ring 2 and the second fixing ring 3. Then, the overall structure composed of the first receiving plate 203 and the second receiving plate 302 is taken out. After holding the pressure for a preset time, the bonded neodymium iron boron magnet is taken out from between the first receiving plate 203 and the second receiving plate 302. S3. Return process: By moving the push rod 5 to its original position, as can be seen from steps S2.2 and S2.3, the discharge port 402 can be moved into the gap 201. Then, through the cooperation of the rack 507 and the gear 407, the piston 404 is driven back to its original position, thereby drawing the adhesive in the storage chamber 406 into the radial channel 403.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A bonding device for neodymium iron boron magnets of the same level, comprising a worktable, characterized in that, A semi-circular first fixing ring and a semi-circular second fixing ring located above the first fixing ring are fixedly installed on the worktable. A gap is provided between the first fixing ring and the second fixing ring. The first fixing ring and the second fixing ring are used to limit the position of the lower NdFeB magnet and the upper NdFeB magnet, respectively. A support column is rotatably installed on the worktable. A discharge pipe is radially fixed on the support column. One end of the discharge pipe is provided with a downward-facing discharge port. The discharge port is coaxial with the first fixing ring and located above the first NdFeB magnet. Rotating the support column can move the discharge pipe out of the gap. A radial channel is provided on the support column, coaxial with and connected to the discharge pipe. A piston is slidably installed in the radial channel. The metering sliding piston can make the adhesive in the radial channel flow out meteredly from the discharge port.

2. The neodymium iron boron magnet parallel bonding device according to claim 1, characterized in that: The support column is radially threaded with a screw rod that is coaxial with the radial channel. The screw rod is rotatably connected to the piston. Rotating the screw rod allows the piston to slide along the radial channel. The support column is provided with a storage chamber for storing adhesive, and the storage chamber is connected to the radial channel.

3. The neodymium iron boron magnet parallel bonding device according to claim 2, characterized in that: A first one-way valve is provided between the radial channel and the discharge pipe to allow the adhesive in the radial channel to flow unidirectionally into the discharge pipe. A second one-way valve is installed between the storage chamber and the radial channel to allow the adhesive in the storage chamber to flow unidirectionally into the radial channel. When the piston is moved closer to the discharge port by rotating the screw, the adhesive in the radial channel can be squeezed out of the discharge port. When the piston is moved away from the discharge port by rotating the screw, the adhesive in the storage chamber can be sucked into the radial channel.

4. The neodymium iron boron magnet parallel bonding device according to claim 3, characterized in that: A drive mechanism for outputting linear motion is installed on the worktable. A push rod is fixedly connected to the output end of the drive mechanism. The push rod is coaxially arranged with the first fixed ring and is used to push the second NdFeB magnet downward to make the two NdFeB magnets close together. A drive ring is fixedly connected to the push rod through a connector. The drive ring is coaxially arranged with the support column. The side wall of the drive ring is provided with a strip groove and an arc groove continuously arranged with the strip groove. The discharge tube is slidably arranged in the strip groove and can slide into the arc groove. After the adhesive is quantitatively extruded to the top wall of the first NdFeB magnet, the push rod squeezes the second NdFeB magnet and drives the drive ring to move downward. Before the second NdFeB magnet contacts the discharge tube, the discharge tube slides from the strip groove into the arc groove. The arc groove squeezes the discharge tube to drive the support column to rotate, which can make the discharge tube move out of the gap.

5. The neodymium iron boron magnet parallel bonding device according to claim 4, characterized in that: The drive ring is provided with a notch for avoiding the screw during the rotation of the support column.

6. The neodymium iron boron magnet parallel bonding device according to claim 5, characterized in that: A gear is fixedly connected to the end of the support column extending from the screw. A connecting plate is fixedly connected to the drive ring. A rack that can mesh with the gear is fixedly connected to the connecting plate. The width of the rack is less than the length of the gear. When the drive ring moves downward, it can drive the rack to move downward and mesh with the gear, thereby driving the gear to rotate. This drives the piston to move towards the discharge port, squeezing the adhesive in the radial channel out of the discharge port. The rack continues to move downward until it disengages from the gear vertically. Then, the discharge pipe slides from the strip groove into the arc groove. The arc groove squeezes the discharge pipe, causing the support column to rotate, so that the discharge pipe moves out of the gap.

7. The neodymium iron boron magnet parallel bonding device according to claim 6, characterized in that: An arc-shaped guide rail is fixedly installed on the worktable. The arc-shaped guide rail is coaxially arranged with the support column. An arc-shaped guide rod that can slide on the arc-shaped guide rail and move in a circle around the axis of the support column is slidably mounted on the arc-shaped guide rail. A C-shaped plate is fixedly connected to one end of the arc-shaped guide rod. The first arc-shaped arm of the two arc-shaped arms on the C-shaped plate is fixed to the arc-shaped guide rod. A gap is provided between the second arc-shaped arm of the two arc-shaped arms on the C-shaped plate and the guide rod. When the discharge pipe is located in the strip groove, the discharge port is directly opposite the center of the first NdFeB magnet. At this time, the discharge port abuts against the second arc-shaped arm, and the adhesive flowing out of the discharge port can fall onto the first NdFeB magnet through the gap. When the discharge pipe rotates along the arc-shaped groove, the discharge pipe drives the discharge port to move in a circle around the support column, so that the discharge port moves to abut against the first arc-shaped arm, thereby pushing the arc-shaped guide rod to move out of the gap along the arc-shaped guide rail.

8. The neodymium iron boron magnet parallel bonding device according to claim 7, characterized in that: A first receiving plate is fixedly installed inside the first fixing ring. The first receiving plate is provided with a first receiving groove for receiving the first NdFeB magnet. A first arc-shaped plate is fixedly installed on the first receiving plate. The first arc-shaped plate cooperates with the first fixing ring to restrict the horizontal displacement of the first NdFeB magnet. A second receiving plate is slidably installed inside the second fixing ring. The second receiving plate is provided with a second receiving groove for fitting onto the top wall of the second NdFeB magnet. A second arc-shaped plate is fixedly installed on the second receiving plate. The first arc-shaped plate and the second arc-shaped plate are slidably connected. A sliding groove is provided on the first arc-shaped plate. A locking block is slidably connected in the sliding groove. An elastic element is fixedly connected between the locking block and the inner wall of the sliding groove. A locking groove is provided on the second arc-shaped plate that can cooperate with the locking block.

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