Piezoelectric actuator bonding aid

Abstract

The utility model discloses a piezoelectric actuator bonding auxiliary device, including U -shaped sliding slot, both ends of U -shaped sliding slot are open, its one end is closed through end fixed plate, its other end is closed through end movable plate, and end movable plate can detachably fixed on U -shaped sliding slot, and the opposite of the inner wall of both ends of U -shaped sliding slot is provided with the groove that extends before and after, and the groove is located the top of piezoelectric ceramic and is close to piezoelectric ceramic setting, and the top limiting plate can slide into both end grooves from outside to inside to realize the top limiting of piezoelectric ceramic, and one side wall of U -shaped sliding slot is provided with the second through -hole of inside -outside through in the middle, and the U -shaped sliding slot of second through -hole inside is equipped with the side push -plate that extends before and after, and the second through -hole is inserted with side push rod, and one end of side push rod is inserted into U -shaped sliding slot and is contacted with side push plate, and the other end is exposed to U -shaped sliding slot outside. The utility model has solved the problem that the local bulge caused by the top no constraint and the misplacement caused by the width direction no constraint in the existing stacking method.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric actuator manufacturing technology, and in particular to a piezoelectric actuator bonding auxiliary device. Background Technology

[0002] In the fabrication of stacked piezoelectric ceramics, small piezoelectric ceramic particles need to be bonded together to the required size using adhesive. Because individual piezoelectric ceramic particles are small, their dimensions vary, ranging from relatively large (e.g., 20mm×20mm×3mm, 10mm×10mm×3mm) to smaller (e.g., 5mm×5mm×3mm, or even smaller, 3mm×3mm×3mm). Depending on the performance and dimensional requirements of the final bonded product, the manufacturing process requires stacking these relatively thin individual ceramic particles to achieve the desired size. For products with higher bonding heights, even more individual ceramic particles need to be stacked and bonded together. Due to the working characteristics of piezoelectric ceramics, their movement in the longitudinal direction must be consistent. If they are not stacked neatly, misaligned areas will experience significant shear stress, posing significant risks during use, such as overheating and cracking. For example, bonding a stacked piezoelectric ceramic with dimensions of 20mm × 20mm × 36mm requires bonding 10 individual piezoelectric ceramics, each measuring 20mm × 20mm × 3.0mm, together. Current stacking methods involve placing each ceramic piece coated with adhesive into a U-shaped metal groove, then applying pressure at both ends to bond them together. However, due to the lack of constraint at the top of the existing U-shaped groove, localized bulging often occurs in the center of the ceramics under pressure, affecting the quality of the finished product. Furthermore, to ensure smooth placement of individual ceramics within the groove, a width redundancy of approximately 1-2mm must be considered. Since current methods cannot apply constraint in the width direction of the stacked ceramics, the resulting stack will exhibit misalignment in the longitudinal direction due to this width redundancy, severely impacting product quality. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a piezoelectric actuator bonding auxiliary device to solve the problems of local bulging caused by unconstrained top and misalignment caused by unconstrained width direction in the existing stacking method, thereby improving the bonding quality of stacked piezoelectric ceramics.

[0004] To achieve the above objectives, this utility model proposes a piezoelectric actuator bonding auxiliary device, including an upward-opening U-shaped groove. The two ends of the U-shaped groove are open, one end is closed by an end fixing plate, and the other end is closed by an end movable plate. The end movable plate is detachably fixed to the U-shaped groove. The interior of the U-shaped groove is used to place piezoelectric ceramics one by one. The middle of the end movable plate is provided with a first through hole that penetrates both inside and outside. An end push plate is provided in the U-shaped groove inside the first through hole. An end push rod is inserted into the first through hole. One end of the end push rod extends into the U-shaped groove and contacts and connects with the end push plate, while the other end is exposed outside the U-shaped groove.

[0005] It also includes a top limiting plate. The depth of the U-shaped chute is greater than the height of the piezoelectric ceramic. The height of the end movable plate is the same as the height of the piezoelectric ceramic. The planar dimension of the end push plate does not exceed the planar dimension of the piezoelectric ceramic. The inner walls of both ends of the U-shaped chute are provided with recessed grooves extending forward and backward. The recessed grooves are located above and close to the piezoelectric ceramic. The opening spacing of the recessed grooves matches the thickness of the top limiting plate. The top limiting plate can slide from the outside to the inside into the recessed grooves at both ends to limit the top of the piezoelectric ceramic. A second through hole is provided in the middle of one side wall of the U-shaped chute. A side push plate extending forward and backward is provided in the U-shaped chute inside the second through hole. The length of the side push plate is less than the length of the U-shaped chute, and the height does not exceed the height of the piezoelectric ceramic. A side push rod is inserted into the second through hole. One end of the side push rod extends into the U-shaped chute and contacts the side push plate, while the other end is exposed outside the U-shaped chute.

[0006] In the above scheme: both the first and second through holes are threaded holes, and the end push rod and side push rod are bolts that match the corresponding threaded holes, with the bolt heads facing outwards. Tightening the bolts can push the corresponding push plate to compress the piezoelectric ceramic, thereby applying constraint to the piezoelectric ceramic in the corresponding direction. Moreover, the threaded connection between the bolt and the threaded hole has good self-locking properties; once the bolt is rotated to the appropriate position, it can stably remain in that position and will not move on its own due to slight external vibrations or disturbances.

[0007] In the above solution, both the end fixing plate and the end movable plate are fixed to the corresponding end faces of the U-shaped slide groove by bolts, and bolt mounting holes are pre-drilled on the corresponding end faces of the U-shaped slide groove. The operation is simple and intuitive, greatly saving installation and disassembly time and improving work efficiency.

[0008] In the above scheme: both the end fixing plate and the end movable plate are fixed to the corresponding end face of the U-shaped slide by 4 bolts. The 4 bolts are evenly distributed on the left and right sides of the corresponding end face, which helps to ensure the stability of the installation.

[0009] In the above scheme: the design height between the horizontal bottom surface of the sink and the bottom of the U-shaped chute is just right for the piezoelectric ceramic to be embedded, and the precise height matching allows the top limiting plate to effectively limit the piezoelectric ceramic.

[0010] In the above scheme, the planar dimensions of the end push plate are consistent with the planar dimensions of the piezoelectric ceramic, which helps to ensure the constraint effect on the piezoelectric ceramic in the length direction.

[0011] In the above scheme: the end push plate, the side push plate and the top limiting plate are all metal plates or wooden boards, which can withstand greater pressure without significant deformation.

[0012] The beneficial effects of this invention are as follows: 1. By setting a top limiting plate, the piezoelectric ceramic is slid into the recesses at both ends of the U-shaped chute, effectively limiting the top of the piezoelectric ceramic and preventing local bulging in the middle of the ceramic when pressure is applied, thus improving the quality of the finished product. 2. By setting a side push plate and side push rod structure, the piezoelectric ceramic can be constrained in the width direction, reducing misalignment caused by width redundancy and further improving product quality. 3. The structure of this device is relatively simple, and the installation and operation of each component are convenient, making it easy to promote and apply in the preparation process of stacked piezoelectric ceramics. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A diagram from another angle.

[0015] Figure 3 This is a schematic diagram of the interior of the U-shaped groove. Detailed Implementation

[0016] like Figure 1 As shown in Figure 3, a piezoelectric actuator bonding auxiliary device mainly consists of an upward-opening U-shaped groove 1 and a top limiting plate 6.

[0017] The U-shaped chute 1 is open at both ends, with one end closed by the end fixing plate 2 and the other end closed by the end movable plate 3. The end movable plate 3 is detachably fixed to the U-shaped chute 1, and the interior of the U-shaped chute 1 is used to place piezoelectric ceramics coated with glue one by one.

[0018] The middle part of the end movable plate 3 is provided with a first through hole 4 that runs through the inside and outside. The U-shaped groove inside the first through hole 4 is provided with an end push plate. An end push rod is inserted into the first through hole 4. One end of the end push rod extends into the U-shaped groove 1 and contacts the end push plate. The other end is exposed outside the U-shaped groove. The end push rod can push the end push plate to move along the length direction of the U-shaped groove 1, which is the front and back direction.

[0019] The depth of the U-shaped chute 1 is greater than the height of the piezoelectric ceramic. The height of the end movable plate 3 is the same as the height of the piezoelectric ceramic. The plane dimension of the end push plate does not exceed the plane dimension of the piezoelectric ceramic. Specifically, the plane dimension of the end push plate is the same as the plane dimension of the piezoelectric ceramic, which helps to ensure the constraint effect on the piezoelectric ceramic in the length direction.

[0020] The inner walls of the two ends of the U-shaped chute 1 are provided with recessed grooves 7 extending forward and backward. The recessed grooves 7 are located above and close to the piezoelectric ceramic. The opening spacing of the recessed grooves 7 matches the thickness of the top limiting plate 6. The top limiting plate 6 can slide from the outside to the inside into the recessed grooves 7 at both ends to achieve top limiting of the piezoelectric ceramic.

[0021] Specifically, the design height between the horizontal bottom surface of the sink 7 and the bottom of the U-shaped chute 1 is just right for the piezoelectric ceramic to be embedded. The precise height matching allows the top limiting plate 6 to effectively limit the piezoelectric ceramic.

[0022] A second through hole 8 is provided in the middle of one side wall of the U-shaped slide 1, extending both internally and externally. A side push plate 5 extending forward and backward is provided inside the U-shaped slide 1 inside the second through hole 8. The length of the side push plate 5 is less than the length of the U-shaped slide 1, and its height does not exceed the height of the piezoelectric ceramic. A side push rod is inserted into the second through hole 8. One end of the side push rod extends into the U-shaped slide 1 and contacts and connects with the side push plate 5, while the other end is exposed outside the U-shaped slide 1. The side push rod can push the side push plate to move along the width direction of the U-shaped slide 1.

[0023] Both the first through hole 4 and the second through hole 8 are threaded holes. The end push rod and the side push rod are bolts that match the corresponding threaded holes, with the bolt heads facing outwards. Tightening the bolts can push the corresponding push plate to squeeze the piezoelectric ceramic, thereby applying constraint to the piezoelectric ceramic in the corresponding direction. Moreover, the threaded connection between the bolt and the threaded hole has good self-locking properties. Once the bolt is rotated to the appropriate position, it can be stably held in that position and will not move on its own due to slight external vibrations or disturbances.

[0024] Both the end fixing plate 2 and the end movable plate 3 are fixed to the corresponding end faces of the U-shaped slide 1 with bolts. Bolt mounting holes are pre-drilled on the corresponding end faces of the U-shaped slide 1. The operation is simple and intuitive, greatly saving installation and disassembly time and improving work efficiency.

[0025] Specifically, both the end fixing plate 2 and the end movable plate 3 are fixed to the corresponding end face of the U-shaped slide 1 by 4 bolts. The 4 bolts are evenly distributed on the left and right sides of the corresponding end face, which helps to ensure the stability of the installation.

[0026] The end push plate, side push plate 5 and top limiting plate 6 are all made of metal or wood, which can withstand greater pressure without significant deformation.

Claims

1. A piezoelectric actuator bonding auxiliary device, comprising an upward-opening U-shaped groove (1), the two ends of the U-shaped groove (1) being open, one end being closed by an end fixing plate (2), and the other end being closed by an end movable plate (3), the end movable plate (3) being detachably fixed to the U-shaped groove (1), the interior of the U-shaped groove (1) being used for inserting piezoelectric ceramics one by one, the middle of the end movable plate (3) being provided with a first through hole (4) penetrating inside and outside, an end push plate being provided in the U-shaped groove inside the first through hole (4), an end push rod being inserted into the first through hole (4), one end of the end push rod extending into the U-shaped groove (1) and contacting the end push plate, the other end being exposed outside the U-shaped groove, characterized in that: It also includes a top limiting plate (6), the depth of the U-shaped chute (1) is greater than the height of the piezoelectric ceramic, the height of the end movable plate (3) is the same as the height of the piezoelectric ceramic, the plane dimension of the end push plate does not exceed the plane dimension of the piezoelectric ceramic, and the inner walls of both ends of the U-shaped chute (1) are provided with front-to-back extending recesses (7), the recesses (7) are located above and close to the piezoelectric ceramic, the opening spacing of the recesses (7) matches the thickness of the top limiting plate (6), and the top limiting plate (6) can slide from the outside to the inside into the recesses at both ends. In the groove (7), the top of the piezoelectric ceramic is limited; a second through hole (8) is provided in the middle of one side wall of the U-shaped groove (1), and a side push plate (5) extending forward and backward is provided in the U-shaped groove (1) inside the second through hole (8). The length of the side push plate (5) is less than the length of the U-shaped groove (1), and the height does not exceed the height of the piezoelectric ceramic. A side push rod is inserted in the second through hole (8). One end of the side push rod extends into the U-shaped groove (1) and contacts the side push plate (5), and the other end is exposed outside the U-shaped groove (1).

2. The piezoelectric actuator bonding auxiliary device according to claim 1, characterized in that: The first through hole (4) and the second through hole (8) are both threaded holes. The end push rod and the side push rod are both bolts that match the corresponding threaded holes, and the bolt heads face outward.

3. The piezoelectric actuator bonding auxiliary device according to claim 1, characterized in that: The end fixing plate (2) and the end movable plate (3) are both fixed to the corresponding end face of the U-shaped slide (1) by bolts, and bolt mounting holes are reserved on the corresponding end face of the U-shaped slide (1).

4. The piezoelectric actuator bonding auxiliary device according to claim 1, characterized in that: The end fixing plate (2) and the end movable plate (3) are both fixed to the corresponding end face of the U-shaped slide (1) by 4 bolts, and the 4 bolts are evenly distributed on the left and right sides of the corresponding end face.

5. The piezoelectric actuator bonding auxiliary device according to claim 1, characterized in that: The design height between the horizontal bottom surface of the sink (7) and the bottom of the U-shaped chute (1) is just enough to allow the piezoelectric ceramic to be embedded.

6. The piezoelectric actuator bonding auxiliary device according to claim 5, characterized in that: The planar dimensions of the end push plate are consistent with the planar dimensions of the piezoelectric ceramic.

7. The piezoelectric actuator bonding auxiliary device according to claim 1, characterized in that: The end push plate, side push plate (5) and top limiting plate (6) are all metal plates or wooden boards.

Images