Chip tantalum capacitor multi-axis rotation dipping device and method for improving dipping uniformity

Abstract

The invention relates to the related technical field of capacitor preparation, in particular to a chip tantalum capacitor multi-axis rotary dipping device and method for improving dipping uniformity, and the device comprises a cross beam and a cylinder which is movably arranged below the cross beam and can ascend and descend. The first rotating mechanism is arranged on the cross beam and comprises a cross arm, a second rotating mechanism is arranged on the cross arm, and the second rotating mechanism is connected with a plurality of sets of clamping mechanisms distributed in the length direction of the cross arm; the first rotating mechanism can drive the clamping mechanism to drive the capacitor to do circular motion in the liquid medium in the cylinder; when the device is used for carrying out dipping treatment on the capacitor, the capacitor can rotate in multiple directions in a liquid medium, so that the rotation forms of the capacitor are effectively increased, the medium is ensured to uniformly cover the surface of the capacitor, and the dipping efficiency and effect are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to the preparation of capacitors, and specifically to a multi-axis rotating impregnation device and method for chip tantalum capacitors to improve impregnation uniformity. Background Technique

[0002] Chip tantalum capacitors are capacitors widely used in electronic circuits, with advantages such as small size, large capacitance, low leakage current, and long service life. They are one of the capacitors with very excellent comprehensive performance. They are mainly used in circuits such as power filtering, energy storage, bypass, and coupling, and are particularly prominent in applications with high-frequency, high-power, and high-reliability requirements.

[0003] The impregnation process of chip tantalum capacitors plays an important role in improving their electrical performance, mechanical strength, thermal stability, and reliability. Through the impregnation process, the dielectric constant and capacitance of the capacitors can be enhanced. This is because the impregnating liquid can fill the microporous structure of the capacitor core, thereby increasing the surface area of the effective dielectric, and further enhancing the capacitance value. During the preparation process of chip tantalum capacitors, the impregnation stage is a key link, which can effectively remove moisture and gas in the capacitor core and eliminate the phenomenon of voids or micropores in the capacitor.

[0004] Existing impregnation methods are usually static impregnation or traditional single-axis impregnation, which easily lead to uneven coverage of tantalum powder and liquid medium, affecting subsequent electrical performance and making it difficult to achieve the ideal impregnation effect. In response to this, some impregnation treatment equipment makes the capacitor rotate during impregnation and simultaneously perform a swinging operation to increase the movement form of the capacitor and improve the impregnation uniformity and effect.

[0005] However, since the voids or micropores on the capacitor are non-directional, if the capacitor is swung back and forth during impregnation, it is easy to cause an obvious multi-directional centrifugal throwing effect on the capacitor, resulting in the multi-directional throwing out of the impregnating agent entering the micropores or voids. Secondly, during the back-and-forth swinging process, the voids or micropores and the impregnating agent are not in a continuous opposite contact state, and it is easy to occur that the impregnating agent cannot completely fill the voids or micropores. Summary of the Invention

[0006] The purpose of the present invention is to provide a multi-axis rotating impregnation device and method for chip tantalum capacitors to improve impregnation uniformity, so as to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A multi-axis rotating impregnation device for chip tantalum capacitors to improve impregnation uniformity, including a cabinet, a cross beam fixed inside the cabinet, and a cylinder movably arranged below the cross beam and capable of lifting, and further includes:

[0009] The first rotating mechanism is arranged on the cross beam and includes a cross arm. A second rotating mechanism is arranged on the cross arm. The second rotating mechanism is connected with multiple clamping mechanisms distributed along the length direction of the cross arm. The first rotating mechanism can drive the clamping mechanism to drive the capacitor to make a circular motion in the liquid medium in the cylinder, and when the second rotating mechanism is triggered, the inclination angle of the capacitor can be changed.

[0010] As a further scheme of the present invention: The first rotating mechanism includes a driving motor installed on the cross beam and a first rotating shaft connected to the output end of the driving motor and fixed to the cross arm. Two guide grooves are symmetrically arranged on the cross arm, and a slider connecting the second rotating mechanism is slidably fitted in each of the two guide grooves.

[0011] As a further scheme of the present invention: The second rotating mechanism includes a second rotating shaft rotatably installed at the bottom of the cross arm and connected to the clamping mechanism. A sliding fit structure is arranged between the slider and the second rotating shaft, and the slider is also connected to an intermittent driving component arranged on the first rotating shaft.

[0012] As a further scheme of the present invention: The sliding fit structure includes a follower kit fixed to the bottom of the slider and slidably sleeved on the second rotating shaft. A driving column is fixed on the follower kit, and a groove body adapted to the driving column is arranged on the outer wall of the second rotating shaft;

[0013] Wherein, the driving column is placed in the groove body and is slidably connected to the second rotating shaft. The groove body includes a connected first groove and a second groove, and the first groove and the second groove are arranged in a spiral shape.

[0014] As a further scheme of the present invention: The intermittent driving component includes a follower tube slidably sleeved on the first rotating shaft. Each of the two sliders is connected to the follower tube through a connecting rod, and two ends of the connecting rod are respectively hinged to the slider and the follower tube. The follower tube can be driven by a threaded driving part arranged on the cross arm to slide along the axial direction of the first rotating shaft.

[0015] As a further scheme of the present invention: The threaded driving part includes a lead screw rotatably installed on the cross arm and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw. A connecting arm is fixed between the threaded sleeve and the follower tube. A gear is also fixed to one end of the lead screw away from the cross arm, and an arc-shaped toothed plate matched with the gear is fixed to the bottom of the cross beam.

[0016] As a further scheme of the present invention: The clamping mechanism includes an assembly plate fixed to the second rotating shaft and multiple groups of elastic brackets arranged at the bottom of the assembly plate for fixing the capacitor.

[0017] As a further solution of the present invention: The elastic support includes two cross bars provided at the bottom of the assembly plate. Both ends of each cross bar are fixed to the assembly plate through a protruding block. Symmetrically sliding seats are provided on the cross bars. The sliding seats are fixedly connected with clamping members through extension arms;

[0018] Wherein, the sliding seat is further connected with a cylindrical spring sleeved on the outer periphery of the cross bar. One end of the cylindrical spring away from the sliding seat is connected to the protruding block. The sliding seat also cooperates with a control structure provided on the assembly plate.

[0019] As a further solution of the present invention: The control structure includes a second cylinder installed on the assembly plate, a limiting plate fixed to the movable end of the second cylinder, and two limiting wheels provided at both ends of the limiting plate. Triangular blocks are fixed on the two sliding seats on the same side. The triangular blocks can cooperate with the limiting wheels through inclined surfaces.

[0020] A dipping method for a chip tantalum capacitor, using the multi-axis rotary dipping device described above, includes the following steps:

[0021] Step 1, use the clamping mechanism to clamp the capacitor to be dip-treated, and the cylinder rises until the liquid medium submerges the capacitor;

[0022] Step 2, the first rotation driving mechanism works to drive the cross arm to drive the capacitor to rotate in the liquid medium through the clamping mechanism;

[0023] Step 3, the second rotation mechanism is triggered to drive the clamping mechanism to change the inclination angle of the capacitor;

[0024] Step 4, after the dipping process is completed, the cylinder rises, the clamping mechanism releases the clamping state of the capacitor, and the capacitor is transferred to the next process.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] When using this device to dip-treat the capacitor, on the one hand, the first rotation mechanism can make the capacitor rotate in the liquid medium. On the other hand, the second rotation mechanism can make the capacitor change the inclination angle in the liquid medium. Therefore, the capacitor can rotate in multiple directions in the liquid medium, effectively increasing the rotation forms of the capacitor, ensuring that the medium evenly covers the surface of the capacitor, and effectively improving the dipping efficiency and effect;

[0027] Secondly, in the present application, the mechanical cooperation method is used to realize the switching of the tilt angle of the capacitor. Among them, the screw thread cooperation between the lead screw and the threaded sleeve has the characteristic of high precision, so that the position of the slider in the guide groove, that is, the rotation angle of the second rotating shaft, can be accurately regulated, providing guarantee for the effective impregnation treatment of the capacitor;

[0028] Specifically, when the gear cooperates with the arc-shaped tooth plate, it rotates, causing the capacitor to tilt at a certain angle. After the gear disengages from the arc-shaped tooth plate, the capacitor can maintain the switched tilt angle. Under the rotation of the first rotating shaft, the void or micropore in the current state is in a continuous opposite contact state with the impregnating agent, avoiding the obvious multi-directional centrifugal shaking effect of the capacitor, and further preventing the problem that the impregnating agent entering the micropore or void is thrown out in multiple directions;

[0029] Furthermore, after multiple cooperations between the gear and the arc-shaped tooth plate, the capacitor can have multiple tilt angles, so that the non-directional voids or micropores can be in continuous opposite contact with the impregnating agent in turn, which is beneficial to the effective filling of the voids or micropores with the liquid medium, removing the moisture and gas in the capacitor core, eliminating the phenomenon of voids or micropores in the capacitor, and ensuring the comprehensiveness of impregnation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Structural schematic diagram of an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0031] Figure 2 Internal structural schematic diagram of a cabinet of an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0032] Figure 3 Structural schematic diagram of another angle of the interior of the cabinet in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0033] Figure 4 Structural schematic diagram of yet another angle of the interior of the cabinet in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0034] Figure 5 Structural schematic diagram of still another angle of the interior of the cabinet in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0035] Figure 6 Structural schematic diagram of a cross beam in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0036] Figure 7 Structural schematic diagram of a clamping mechanism in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0037] Figure 8 is Figure 4 An enlarged view of the structure at position A in

[0038] Figure 9 is Figure 7 An enlarged view of the structure at position B in

[0039] Figure 10 An exploded view of the clamping mechanism in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0040] Figure 11 An exploded view of the intermittent drive assembly in an embodiment of a multi-axis rotary impregnation device for chip tantalum capacitors to improve impregnation uniformity.

[0041] Figure 12 is Figure 11 A schematic structural view from another angle.

[0042] In the figure: 1, cross beam; 2, guiding arm; 3, movable seat; 4, first cylinder; 5, cylinder; 6, driving motor; 7, first rotating shaft; 8, cross arm; 801, guiding groove; 9, slider; 10, follower kit; 1001, driving column; 11, follower tube; 12, connecting rod; 13, connecting arm; 14, lead screw; 15, threaded sleeve; 16, gear; 17, arc-shaped toothed plate; 18, second rotating shaft; 1801, first groove; 1802, second groove; 19, assembly plate; 20, second cylinder; 21, limiting plate; 22, limiting wheel; 23, protruding block; 24, cross bar; 25, cylindrical spring; 26, sliding seat; 27, triangular block; 2701, inclined surface; 28, clamping member; 29, extension arm. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, which can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manners.

[0045] Please refer to Figures 1 - 11 In the embodiment of the present invention, a multi-axis rotary impregnation device for a chip tantalum capacitor to improve impregnation uniformity includes a cabinet, a cross beam 1 fixed in the cabinet, and a cylinder 5 movably arranged below the cross beam 1 and capable of lifting, and further includes:

[0046] A first rotating mechanism is arranged on the cross beam 1 and includes a cross arm 8. A second rotating mechanism is arranged on the cross arm 8. The second rotating mechanism is connected with multiple sets of clamping mechanisms distributed along the length direction of the cross arm 8. The first rotating mechanism can drive the clamping mechanism to drive the capacitor to make a circular motion in the liquid medium in the cylinder 5, and when the second rotating mechanism is triggered, the inclination angle of the capacitor can be changed.

[0047] Furthermore, in specific implementation, the cylinder 5 is used to contain the liquid medium for impregnating the capacitor. The specific composition of the liquid medium is not specifically limited in this application and should be selected according to actual process requirements;

[0048] During operation, multiple sets of the clamping mechanisms are used to clamp and fix the capacitor to be impregnated. Then, the cylinder 5 rises below the cross beam 1 until the liquid medium submerges the capacitor. The first rotating mechanism works, and the cross arm 8 can be driven to rotate. Correspondingly, the capacitor clamped and fixed by the clamping mechanism rotates in the liquid medium. During the rotation of the cross arm 8, the second rotating mechanism is intermittently triggered. Whenever the second rotating mechanism is triggered, it will cause the clamping mechanism to drive the capacitor to shift, so that the inclination angle of the capacitor changes;

[0049] In summary, when the capacitor is impregnated by using this device, on the one hand, the first rotating mechanism can make the capacitor rotate in the liquid medium, ensuring that the holes or micropores on the capacitor can be in opposite contact with the liquid medium, which is beneficial for the liquid medium to fill the holes or micropores, remove the moisture and gas in the capacitor core, and eliminate the phenomenon of holes or micropores existing in the capacitor. On the other hand, the second rotating mechanism can make the inclination angle of the capacitor change in the liquid medium. Therefore, the capacitor has multiple different inclination angles during the impregnation process, ensuring that the non-directional holes or micropores can be in continuous opposite contact with the liquid medium and ensuring the comprehensiveness of the impregnation treatment.

[0050] Please refer to again Figure 10 The first rotating mechanism includes a driving motor 6 installed on the cross beam 1 and a first rotating shaft 7 connecting the output end of the driving motor 6 and fixed to the cross arm 8. Two guide grooves 801 are symmetrically arranged on the cross arm 8, and a slider 9 connecting the second rotating mechanism is slidably fitted in each of the two guide grooves 801.

[0051] During the working process, the two sliders 9 can slide in the two guide grooves 801 respectively, that is, move along the length direction of the cross arm 8. During this process, the slider 9 can trigger the second rotating mechanism to change the tilting angle of the capacitor, so as to ensure that non-directional cavities or micropores can all maintain opposite contact with the liquid medium, effectively improving the impregnation efficiency and effect.

[0052] Please refer to again Figure 6 、 Figure 7 and Figure 11 , the second rotating mechanism includes a second rotating shaft 18 rotatably installed at the bottom of the cross arm 8 and connected to the clamping mechanism. A sliding fit structure is provided between the slider 9 and the second rotating shaft 18, and the slider 9 is also connected to an intermittent driving assembly provided on the first rotating shaft 7. The sliding fit structure includes a follower kit 10 fixed to the bottom of the slider 9 and slidably sleeved with the second rotating shaft 18. A driving column 1001 is fixed on the follower kit 10, and a groove body adapted to the driving column 1001 is provided on the outer wall of the second rotating shaft 18; wherein, the driving column 1001 is placed in the groove body and slidably connected to the second rotating shaft 18. The groove body includes a first groove 1801 and a second groove 1802 connected to each other, and the first groove 1801 and the second groove 1802 are arranged in a spiral shape.

[0053] During operation, the driving motor 6 drives the cross arm 8 to rotate through the first rotating shaft 7. During this process, when the intermittent driving assembly is triggered, it can drive the slider 9 to slide a certain distance in the guide groove 801. Correspondingly, the slider 9 drives the follower kit 10 to slide on the second rotating shaft 18, and the follower kit 10 drives the driving column 1001 to move along the axial direction of the second rotating shaft 18. The driving column 1001 first performs sliding fit with the first groove 1801, causing the second rotating shaft 18 to rotate forward, and the clamping mechanism drives the capacitor to change the tilting angle. After the driving column 1001 enters the second groove 1802, the second rotating shaft 18 rotates reversely, and the tilting angle of the capacitor changes reversely. Thus, during the entire impregnation process, the capacitor can maintain different tilting angles and rotate in the liquid medium, avoiding the problem that the capacitor has an obvious multi-directional centrifugal throwing effect, which may cause the impregnating agent in the micropores or cavities to be thrown out in multiple directions. At the same time, it ensures that non-directional cavities or micropores can all maintain continuous opposite contact with the liquid medium, ensuring the comprehensiveness of the impregnation process.

[0054] The intermittent driving assembly includes a follower tube 11 slidably sleeved on the first rotating shaft 7. Each of the two sliders 9 is connected to the follower tube 11 by a connecting rod 12, and two ends of the connecting rod 12 are respectively hinged to the slider 9 and the follower tube 11. The follower tube 11 can be driven by a threaded driving member provided on the cross arm 8 to slide along the axial direction of the first rotating shaft 7. The threaded driving member includes a lead screw 14 rotatably mounted on the cross arm 8 and a threaded sleeve 15 sleeved on the lead screw 14 and threadedly connected to the lead screw 14. A connecting arm 13 is fixed between the threaded sleeve 15 and the follower tube 11. A gear 16 is further fixed to an end of the lead screw 14 away from the cross arm 8. An arc-shaped toothed plate 17 engaged with the gear 16 is fixed to the bottom of the cross beam 1.

[0055] During the working process, when the driving motor 6 drives the cross arm 8 to rotate forward through the first rotating shaft 7, correspondingly, the lead screw 14 makes a circular motion around the first rotating shaft 7. When the gear 16 meshes with the teeth on the arc-shaped toothed plate 17, the gear 16 drives the lead screw 14 to rotate forward. Further, the threaded sleeve 15 is in threaded engagement with the lead screw 14. The threaded sleeve 15 drives the follower tube 11 to slide downward on the first rotating shaft 7 by a certain distance through the connecting arm 13. The follower tube 11 pushes the slider 9 to slide away from the first rotating shaft 7 in the guide groove 801 through the connecting rod 12, so that the second rotating shaft 18 rotates, changing the inclination angle of the capacitor, switching different forms to rotate in the liquid medium, improving the impregnation efficiency and effect. And whenever the inclination angle of the capacitor is switched, that is, after the gear 16 disengages from the arc-shaped toothed plate 17, by using the self-locking property of the threaded engagement between the lead screw 14 and the threaded sleeve 15, the state of the capacitor after switching can be maintained. Therefore, generally speaking, under different inclination states of the capacitor, it can be impacted by the liquid medium for a certain period of time, that is, the holes or micropores on the capacitor can be in an opposite contact state with the liquid medium for a certain period of time, avoiding the obvious multi-directional centrifugal throwing effect of the capacitor, and further avoiding the problem that the impregnating agent entering the micropores or holes is thrown out in multiple directions. Thereby, it is beneficial for the impregnating liquid to efficiently fill the micropore structure of the capacitor core, providing an effective guarantee for the impregnation effect. During the whole working process, through multiple engagements between the gear 16 and the arc-shaped toothed plate 17, the capacitor can have multiple inclination angles, so as to ensure that the non-directional holes or micropores can be in continuous opposite contact with the liquid medium, ensuring the comprehensiveness of the impregnation treatment.

[0056] It should be noted that the drive motor 6 should be a servo motor with a bidirectional drivable output end, so as to realize the change of the circumferential movement direction of the gear 16. Then, after the circumferential movement direction of the gear 16 is changed, when the gear 16 meshes with the teeth on the arc-shaped tooth plate 17, the gear 16 can drive the lead screw 14 to rotate in the reverse direction, so that the threaded sleeve 15 moves upward on the lead screw 14. The follower tube 11 pulls the slider 9 in the guide groove 801 towards the first rotating shaft 7 through the connecting rod 12. Correspondingly, the capacitor can return to its initial clamping state, so as to facilitate the transfer of the capacitor to the next processing process by an external transfer mechanism (transfer manipulator or negative pressure suction device) after impregnation.

[0057] It should also be supplemented that during specific implementation, the rotation speed of the drive motor 6 can be adaptively adjusted to achieve a better impregnation effect.

[0058] Furthermore, in this application, a drive source can be directly arranged on the cross arm 8, and the drive source is a stepping drive mode. The drive source directly drives the second rotating shaft 18 to rotate to realize the change of the inclination angle of the capacitor. Although this drive mode can also realize specific functions, the operation of the drive source and the drive motor 6 needs to establish a corresponding logical relationship, which depends on programming control or the use of sensors. Thus, on the one hand, the input cost of the device increases, and on the other hand, the use of programming and sensors also increases unstable factors, resulting in a higher failure rate of the device. In this application, the mechanical cooperation method is used to realize the switching of the inclination angle of the capacitor. Among them, the threaded cooperation between the lead screw 14 and the threaded sleeve 15 has the characteristic of high precision, so as to accurately control the position of the slider 9 in the guide groove 801, that is, the rotation angle of the second rotating shaft 18, to provide guarantee for the effective impregnation treatment of the capacitor.

[0059] Please refer to again Figure 7 、 Figure 8 and Figure 9 , the clamping mechanism includes an assembly plate 19 fixed to the second rotating shaft 18 and a plurality of elastic brackets arranged at the bottom of the assembly plate 19 for fixing the capacitor. The elastic bracket includes two cross bars 24 arranged at the bottom of the assembly plate 19. The two ends of the cross bar 24 are respectively fixed to the assembly plate 19 through a protruding block 23. Symmetrically sliding seats 26 are arranged on the cross bar 24. The sliding seat 26 is fixedly connected with a clamping member 28 through an extension arm 29; wherein, the sliding seat 26 is also connected with a cylindrical spring 25 sleeved on the outer periphery of the cross bar 24. One end of the cylindrical spring 25 far from the sliding seat 26 is connected to the protruding block 23, and the sliding seat 26 also cooperates with a control structure arranged on the assembly plate 19.

[0060] The control structure includes a second cylinder 20 mounted on the assembly plate 19, a limit plate 21 fixed to the movable end of the second cylinder 20, and two limit wheels 22 provided at both ends of the limit plate 21. Triangular blocks 27 are fixed on the two sliding seats 26 on the same side, and the triangular blocks 27 can cooperate with the limit wheels 22 through inclined surfaces 2701.

[0061] For attachment Figure 8 Taking the state shown as an example, when the capacitor is not clamped, the limit wheel 22 is in contact with the inclined surface 2701, and the cylindrical spring 25 is in a compressed state. After the manipulator or the negative pressure suction device sends the manipulator between the two clamping members 28, the movable end of the second cylinder 20 extends. Further, the cylindrical spring 25 will gradually rebound, and the two clamping members 28 approach each other until the capacitor is stably clamped by the two clamping members 28 under the elastic support of the cylindrical spring 25. Therefore, this elastic bracket can adapt to the clamping of capacitors within a specific specification range and realize the clamping function of multi-specification capacitors.

[0062] It should be supplemented that two guiding arms 2 are also fixed to the bottom of the cross beam 1. An activity seat 3 is slidably provided on each of the two guiding arms 2. The cylinder 5 is fixed between the two activity seats 3, and the activity seat 3 is fixed to the movable end of a first cylinder 4 mounted on the cross beam 1. After the impregnation treatment is completed, the first cylinder 4 pushes the activity seat 3 to slide downward on the guiding arm 2. Correspondingly, the height of the cylinder 5 decreases until the capacitor is separated from the liquid medium, so as to facilitate the manipulator or the negative pressure suction device to transfer the impregnated capacitor. Specifically, the movable end of the second cylinder 20 retracts, and the limit wheel 22 acts on the inclined surface 2701 to cause the triangular block 27 to give way, and the two clamping members 28 move away from each other to release the clamping and fixing state of the capacitor.

[0063] As another embodiment of the present invention, a method for impregnating a chip tantalum capacitor is also proposed. Using the multi-axis rotary impregnation device described above, it includes the following steps:

[0064] Step 1, use the clamping mechanism to clamp the capacitor to be impregnated, and the cylinder 5 rises until the liquid medium submerges the capacitor.

[0065] Step 2, the first rotation driving mechanism works to drive the cross arm 8 to drive the capacitor to rotate in the liquid medium through the clamping mechanism.

[0066] Step 3, the second rotation mechanism is triggered to drive the clamping mechanism to drive the capacitor to change the inclination angle.

[0067] Step 4: When the impregnation process ends, the cylinder 5 rises, the clamping mechanism releases the clamping state of the capacitor, and the capacitor is transferred to the next process.

[0068] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0069] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-axis rotary impregnation device for chip-type tantalum capacitors for improving impregnation uniformity, comprising a crossbeam (1) and a cylinder (5) movably arranged below the crossbeam (1) and capable of being raised and lowered; It is characterized in that Also includes: The first rotating mechanism is arranged on the cross beam (1) and comprises a cross arm (8). The cross arm (8) is provided with a second rotating mechanism. The second rotating mechanism is connected to a plurality of clamping mechanisms distributed along the length direction of the cross arm (8). The first rotating mechanism can drive the clamping mechanism to drive the capacitor to perform circular motion in the liquid medium in the cylinder (5), and when the second rotating mechanism is triggered, the tilt angle of the capacitor can be changed.

2. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 1, characterized in that: The first rotating mechanism comprises a driving motor (6) mounted on the crossbeam (1) and a first rotating shaft (7) connected to the output end of the driving motor (6) and fixed to the cross arm (8); two guide grooves (801) are symmetrically provided on the cross arm (8); a slider (9) connected to the second rotating mechanism is slidably engaged in each of the two guide grooves (801).

3. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 2, characterized in that: The second rotating mechanism comprises a second rotating shaft (18) rotatably mounted at the bottom of the cross arm (8) and connected to the clamping mechanism, a sliding fitting structure is provided between the slider (9) and the second rotating shaft (18), and the slider (9) is also connected to an intermittent driving assembly provided on the first rotating shaft (7).

4. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 3, characterized in that: The sliding matching structure comprises a follower kit (10) fixed to the bottom of the slider (9) and slidingly fitted with the second rotating shaft (18), a driving column (1001) being fixed to the follower kit (10), and a groove body adapted to the driving column (1001) being provided on the outer wall of the second rotating shaft (18); The driving column (1001) is placed in the groove body and is slidably connected to the second rotating shaft (18), and the groove body includes a first groove (1801) and a second groove (1802) connected to each other, and the first groove (1801) and the second groove (1802) are arranged in a spiral shape.

5. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 3, characterized in that: The intermittent drive assembly comprises a follower tube (11) slidably mounted on the first rotating shaft (7), the two sliders (9) are respectively connected to the follower tube (11) via a connecting rod (12), and the two ends of the connecting rod (12) are respectively hinged to the slider (9) and the follower tube (11), and the follower tube (11) can be driven by a threaded driving member arranged on the cross arm (8) to slide along the axial direction of the first rotating shaft (7).

6. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 5, characterized in that: The threaded drive member comprises a screw rod (14) rotatably mounted on the cross arm (8) and a threaded sleeve (15) sleeved on the screw rod (14) and threadedly connected to the screw rod (14), a connecting arm (13) is fixed between the threaded sleeve (15) and the follower tube (11), a gear (16) is also fixed to one end of the screw rod (14) away from the cross arm (8), and an arc-shaped toothed plate (17) cooperating with the gear (16) is fixed to the bottom of the cross beam (1).

7. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 3, characterized in that: The clamping mechanism comprises an assembly plate (19) fixed to the second rotating shaft (18) and a plurality of groups of elastic brackets arranged at the bottom of the assembly plate (19) for fixing the capacitor.

8. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 7, characterized in that: The elastic bracket comprises two cross bars (24) arranged at the bottom of the mounting plate (19), the two ends of the cross bars (24) are fixed to the mounting plate (19) via a protruding block (23), a sliding seat (26) is symmetrically slidably provided on the cross bars (24), and the sliding seat (26) is fixedly connected to a clamping member (28) via an extension arm (29); The sliding seat (26) is also connected to a columnar spring (25) sleeved on the outer periphery of the cross bar (24); one end of the columnar spring (25) away from the sliding seat (26) is connected to the protruding block (23); and the sliding seat (26) is also coordinated with a control structure provided on the assembly plate (19).

9. The multi-axis rotary impregnation device for chip tantalum capacitors for improving impregnation uniformity according to claim 8, characterized in that: The control structure comprises a second cylinder (20) mounted on the assembly plate (19), a limit plate (21) fixed to the movable end of the second cylinder (20), and two limit wheels (22) arranged at both ends of the limit plate (21); a triangular block (27) is fixed on the two sliding seats (26) located on the same side, and the triangular block (27) can cooperate with the limit wheel (22) through an inclined surface (2701).

10. A method for impregnating a chip tantalum capacitor, using the multi-axis rotary impregnation device as claimed in claim 1, characterized in that: The following steps are involved: Step 1: The capacitor to be impregnated is clamped by a clamping mechanism, and the cylinder (5) rises until the liquid medium immerses the capacitor; Step 2: The first rotation drive mechanism operates to drive the cross arm (8) to drive the capacitor to rotate in the liquid medium through the clamping mechanism; Step 3: The second rotating mechanism is triggered to drive the clamping mechanism to change the tilt angle of the capacitor; Step 4: The dipping process is completed, the cylinder (5) rises, the clamping mechanism releases the clamping state of the capacitor, and the capacitor is transferred to the next process.

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