Large size crystal bonding clamp device

Abstract

The utility model discloses a large -size crystal bonding clamping device, it includes the outer tube of upper opening and sets up the clamping assembly in the outer tube inside, clamping assembly includes the clamping fixed plate of detachable setting in the outer tube inner wall and sets up the clamp of clamping fixed plate, clamping fixed plate is perpendicular to the bottom wall of outer tube, the number of clamp is at least one, at least one clamp is arranged and sets up along the height direction of clamping fixed plate, and the clamp is used for clamping fixed crystal, be equipped with the roof in the outer tube, and the roof diameter is equal to the inner diameter of outer tube, and the roof is located above the clamp, and clamping fixed plate is connected in the roof and slides, and the roof and outer tube bottom wall between fill and place have alumina ball, the utility model discloses can realize accurate alignment and stable bonding to large -size crystal, and the large -size crystal bonding strength and reliability have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of crystal thermal bonding technology, and in particular to a large-size crystal bonding clamping device. Background Technology

[0002] Large-size crystals have become an indispensable core material in industries such as optics, laser technology, semiconductors, photovoltaics, new energy vehicles, nuclear industry, and deep space exploration due to their advantages of complete lattice performance, reduced splicing and improved work efficiency, and large-scale production and reduced costs.

[0003] However, the growth cycle of large-size laser crystals is long, the equipment cost is high, the growth process is difficult, and it is hard to directly grow large-size, high-quality laser crystals. The fabrication technology of large-size crystals has always been a key challenge restricting their widespread application. Thermal bonding technology can prepare large-size crystals by precisely bonding small crystals, which can ensure the overall high quality of the crystals, offer more flexible technical approaches, and significantly reduce the manufacturing cost of large-size crystals.

[0004] To ensure precise bonding between small crystals, clamping tools are typically required to hold and position them. For example, patent CN207353201U discloses a crystal bonding fixture, including a base, a support, a crystal fixing mechanism, a pressure hammer mechanism, and an adjustment mechanism. The crystal fixing mechanism is located at the bottom of the support, and the pressure hammer mechanism is mounted on the support above the crystal fixing mechanism. The mechanism is welded and fixed at the center of the circular base and connected to the lower half of the support via a through groove. A vertical through groove is located at the center of an eccentric copper block for placing the bonding sheet. However, the fixture in patent CN207353201U is difficult to adapt to the clamping and positioning of bonding between larger crystals.

[0005] For example, CN205140940U discloses a crystal bonding fixture, comprising a stop block, a support base, a receiving groove, a push rod holder, a push rod, a pressing module, screws, and a base. The stop block, support base, and push rod holder are connected to the base by screws. The front and rear parts of the receiving groove are connected by threads, and the bottom of the inner groove is precisely aligned. The receiving groove is pushed into the support base, pressing against the stop block, and the screws on the support base are tightened to fix the receiving groove. Although the tooling of patent CN207353201U can clamp and position crystals with relatively larger cross-sections, it still has the defect of difficulty in applying uniform force to the cross-section of large-sized crystals, resulting in an unsatisfactory bonding effect between large-sized crystals.

[0006] In summary, existing crystal bonding clamping tools are only suitable for clamping and bonding small-sized crystals, and cannot be adapted to clamping and positioning large-sized crystals, or have the defect of difficulty in applying uniform force to large-sized crystals. There is an urgent need for a clamping tool that can achieve precise alignment and stable bonding of large-sized crystals, and significantly improve the strength and reliability of large-sized crystal bonding. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a large-size crystal bonding clamping device, which can achieve precise alignment and stable bonding of large-size crystals, and significantly improve the bonding strength and reliability of large-size crystals.

[0008] To solve the above-mentioned technical problems, the large-size crystal bonding clamping device provided by this utility model adopts the following technical solution: A large-size crystal bonding clamping device includes an open outer cylinder and a clamping assembly disposed inside the outer cylinder. The clamping assembly includes a clamping fixing plate detachably disposed on the inner wall of the outer cylinder and clamps disposed on the clamping fixing plate. The clamping fixing plate is perpendicular to the bottom wall of the outer cylinder. The number of clamps is at least one, and at least one clamp is arranged at intervals along the height direction of the clamping fixing plate. The clamps are used to clamp and fix the crystal. The outer cylinder is provided with a top plate, the outer diameter of which is equal to the inner diameter of the outer cylinder. The top plate is located above the clamps. The clamping fixing plate passes through and is slidably connected to the top plate. The space between the top plate and the bottom wall of the outer cylinder is filled with alumina balls.

[0009] By adopting the above technical solution, the lower and upper crystals, after grinding and polishing, are first placed overlapping in the outer cylinder. The lower and upper crystals are simultaneously clamped and positioned using fixtures, ensuring they remain coaxially overlapped. If the height of the lower and upper crystals exceeds the height of the fixture itself, two fixtures are used, each clamping one crystal individually. Since the two fixtures have the same size and structure, they also ensure the lower and upper crystals remain coaxially overlapped.

[0010] After installing the lower and upper crystals relative to the clamps, install the clamping and fixing plate inside the outer cylinder, ensuring that the lower and upper crystals are coaxial with the outer cylinder. Add alumina balls into the outer cylinder, covering the bottom wall and reaching the upper sidewall of the upper crystal. Then, place the top plate inside the outer cylinder, overlapping the upper sidewall of the upper crystal. Apply a specified pressure to the top plate to transfer pressure to the upper and lower crystals, achieving bonding between them.

[0011] In summary, the fixture can accurately position and bond two crystals. After positioning the crystals, alumina spheres are then filled in as a pressure transmission medium to disperse the pressure on the top of the crystals. When using alumina spheres as a pressure transmission medium, defects at the bonding surface of the crystal components can be significantly reduced. Furthermore, since the clamping plate is detachable from the outer cylinder, the fixture can be used outside the outer cylinder. Because only pressing is performed in the photopolymerization stage without heating, the outer cylinder is not needed. Therefore, the fixture can be used in both photopolymerization and heat treatment stages for crystal positioning and bonding. The aforementioned large-size crystal bonding clamping device achieves precise alignment and stable bonding of large-size crystals, significantly improving bonding strength and reliability. In addition, the device is easy to operate and environmentally friendly, suitable for bonding various large-size crystals such as laser crystals and third-generation semiconductor crystals, enabling efficient integration of optical devices.

[0012] Optionally, the diameter of the alumina spheres is 0.8-1.2 mm.

[0013] By adopting the above technical solution, the alumina spheres, with their extremely small diameter (on the millimeter scale), possess excellent fluidity. Through pressure transmission, the pressure surface achieves complete contact with the crystal surface, resulting in uniform pressure on the outer surface of the crystal element. This reduces inconsistencies in crystal deformation and significantly minimizes defects at the crystal element bonding surface. Furthermore, the alumina spheres exhibit excellent thermal conductivity. The high thermal conductivity of alumina spheres within the aforementioned diameter range makes them a cost-effective and electrically insulating thermally conductive filler material, enhancing the thermal conductivity of the heating process in thermal bonding.

[0014] Optionally, an alumina brick is placed on top of the top plate.

[0015] By adopting the above technical solution, alumina bricks, due to their good thermal conductivity, can not only serve as heavy objects for applying pressure, but also as thermally conductive fillers with electrical insulation and high cost-effectiveness, thus improving the thermal conductivity of the heating process for thermal bonding.

[0016] Optionally, the top plate has a protrusion at its center, and the alumina brick has a groove, with the protrusion engaging with the groove of the alumina brick.

[0017] By adopting the above technical solution, the insertion and positioning of the protrusions and grooves ensures that the alumina brick is always located in the center of the top plate, so that the pressure applied by the alumina brick to the crystal below is centrally symmetrically distributed.

[0018] Optionally, the clamp includes a clamp body detachably mounted on the clamping fixing plate, a buckle plate detachably mounted on the clamp body, and an abutment bolt threaded to the buckle plate. The clamp body and the buckle plate are both perpendicular to the clamping fixing plate. The area between the buckle plate and the clamp body is a crystal placement area. The abutment bolt is located on the buckle plate away from the clamp body to abut the crystal.

[0019] By adopting the above technical solution, the upper and lower crystals are placed between the buckle plate and the clamp body, and the abutment bolts are rotated to tighten them against the upper and lower crystals. If the height of the lower and upper crystals exceeds the height of the buckle plate itself, two clamps are arranged, and the buckles of the two clamps are used to clamp the upper and lower crystals separately.

[0020] Optionally, the cross-sectional profile of the buckle plate is U-shaped, C-shaped, V-shaped, or trapezoidal.

[0021] By adopting the above technical solutions, U-shaped, C-shaped, V-shaped or trapezoidal buckles can stably clamp crystals.

[0022] Optionally, the clamp body has a groove on one side wall facing the buckle plate, and the opening of the groove faces the buckle plate.

[0023] By adopting the above technical solution, the crystal is clamped in the groove, which can limit the displacement of the crystal and clamp and fix the crystal more stably.

[0024] Optionally, the cross-sectional profile of the groove wall is V-shaped, trapezoidal, or semi-circular.

[0025] By adopting the above technical solutions, V-shaped, trapezoidal, or semi-circular grooves can stably restrict the displacement of crystals.

[0026] Optionally, multiple snap-fit ​​grooves are provided on the two side walls of the clamp body that are far apart from each other. The arrangement direction of the multiple snap-fit ​​grooves is perpendicular to the clamping and fixing plate. Each end of the buckle plate is provided with a snap-fit ​​part, and the snap-fit ​​parts at both ends of the buckle plate are respectively snapped into the snap-fit ​​grooves on both sides of the clamp body.

[0027] By adopting the above technical solution, the snap-fit ​​part of the buckle is engaged in the snap-fit ​​groove, the crystal is placed between the buckle and the clamp body, and the abutment bolt, while tightening against the crystal, can pull the buckle away from the clamp body, thus stably fixing the buckle to the clamp body. Furthermore, the multiple snap-fit ​​grooves allow for adjustment of the relative position of the buckle and the clamp body, thereby adjusting the distance between the buckle and the clamp, enabling stable clamping and fixing of crystals of different sizes.

[0028] Optionally, the clamping plate has multiple fixing holes arranged in an array, and the clamp body is threaded with fixing bolts. The fixing bolts are also inserted into the fixing holes, and the bolt heads and the clamp body are located on opposite sides of the clamping plate.

[0029] By adopting the above technical solution, the fixing seat, clamping fixing plate and clamp body are stably fixed by fixing bolts, so that the clamp body is stably fixedly connected to the clamping fixing plate.

[0030] Optionally, a positioning piece is clamped between the clamp body and the clamping fixing plate, and the fixing bolt passes through the positioning piece. Positioning pieces of different thicknesses can be replaced between the clamp body and the clamping fixing plate.

[0031] By adopting the above technical solution, the lateral position of the fixture body can be adjusted by replacing the positioning plates of different thicknesses between the fixture body and the clamping plate, so that the center of the upper and lower crystals coincides with the center of the outer cylinder, and the top plate can evenly apply force to the upper and lower crystals.

[0032] Optionally, a base plate is placed at the bottom of the outer cylinder, the diameter of the base plate being equal to the inner diameter of the outer cylinder, the clamping and fixing plate is vertically fixed to the base plate, and alumina balls are placed between the top plate and the base plate.

[0033] By adopting the above technical solution, the clamping components can be detachably connected to the outer cylinder by placing the base plate inside the outer cylinder.

[0034] In summary, this utility model has at least one of the following beneficial technical effects: 1. The fixture can accurately position and bond two crystals. After positioning the crystals, alumina spheres are filled in as a pressure transmission medium to disperse the pressure on the top of the crystals. When using alumina spheres as a pressure transmission medium, defects at the bonding surface of the crystal components can be significantly reduced. Furthermore, since the clamping plate is detachable from the outer cylinder, the fixture can be used outside the outer cylinder. Because only pressing is performed in the photopolymerization stage without heating, the outer cylinder is not needed. Therefore, the fixture can be used in both the photopolymerization and heat treatment stages for crystal positioning and bonding. The above-mentioned large-size crystal bonding clamping device achieves precise alignment and stable bonding of large-size crystals, significantly improving bonding strength and reliability. In addition, the device has the advantages of simple operation and environmental friendliness, and is suitable for bonding various large-size crystals such as laser crystals and third-generation semiconductor crystals, realizing the efficient integration of optical devices.

[0035] 2. Because the alumina spheres used in this application have a very small diameter, on the order of millimeters, they have good fluidity. Through pressure transmission, the pressure surface is made into complete contact with the crystal surface, thereby achieving uniform pressure on the outer surface of the crystal element, which reduces the inconsistency of crystal deformation and significantly reduces defects at the bonding surface of the crystal element. Furthermore, the alumina spheres have good thermal conductivity. The alumina spheres in the above-mentioned diameter range have high thermal conductivity and are thermally conductive filler materials with electrical insulation and high cost performance, which can improve the thermal conductivity of the heating process for thermal bonding. Attached Figure Description

[0036] Figure 1 This utility model is a schematic diagram illustrating the structure of a bonding clamping device for large-size crystals.

[0037] Figure 2 This utility model is a top view showing a bonding clamping device for large-size crystals.

[0038] Figure 3 This is a schematic diagram illustrating the structure of the base plate and the clamping and fixing plate of this utility model.

[0039] Explanation of reference numerals in the attached drawings: 1. Outer cylinder; 2. Upper crystal; 3. Lower crystal; 4. Base plate; 41. Clamping and fixing plate; 42. Fixing hole; 5. Fixture body; 51. Snap-fit ​​groove; 52. Limiting groove; 6. Abutment bolt; 7. Positioning piece; 8. Gasket; 9. Buckle plate; 91. Snap-fit ​​part; 10. Fixing bolt; 11. Top plate; 111. Protrusion; 12. Alumina brick; 13. Alumina ball. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-3 This utility model will be described in further detail.

[0041] This utility model discloses a large-size crystal bonding clamping device. (Refer to...) Figure 1 and Figure 2 The large-size crystal bonding clamping device includes an outer cylinder 1 and a clamping assembly. The outer cylinder 1 is a hollow cylinder with an opening at the top, and the clamping assembly is located inside the outer cylinder 1. A base plate 4 is placed on the base plate 4 of the outer cylinder 1, and the diameter of the base plate 4 is equal to the inner diameter of the outer cylinder 1.

[0042] Reference Figure 1 and Figure 2The clamping assembly includes a clamping fixing plate 41 and clamps. The clamping fixing plate 41 is vertically fixed to the base plate 4. By placing the base plate 4 inside the outer cylinder 1, the clamping assembly can be detachably connected to the outer cylinder 1. There is at least one clamp; in this embodiment, there are two clamps, which are arranged at intervals along the height direction of the clamping fixing plate 41. In this embodiment, the heights of the lower crystal 3 and the upper crystal 2 exceed the height of the clamps themselves. Each clamp individually clamps one crystal. Because the two clamps have the same size and structure, the lower crystal 3 and the upper crystal 2 can maintain a coaxial overlapping state.

[0043] An inner top plate 11 is provided inside the outer cylinder 1. The diameter of the top plate 11 is equal to the inner diameter of the outer cylinder 1, and the top plate 11 is located above the two clamps. Alumina balls 13 are filled between the top plate 11 and the bottom wall of the outer cylinder 1. The diameter of the alumina balls 13 is 0.8-1.2 mm. In this embodiment, the diameter of the alumina balls 13 is 1 mm.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The clamping plate 41 has multiple fixing holes 42 arranged in an array. The clamp includes a clamp body 5, a buckle plate 9, and abutment bolts 6. Fixing bolts 10 are threaded through and connected to the clamp body 5. The fixing bolts 10 also pass through the fixing holes 42. The screw heads of the fixing bolts 10 and the clamp body 5 are located on opposite sides of the clamping plate 41. The clamping plate 41 and the clamp body 5 are stably fixed by the fixing bolts 10, allowing the clamp body 5 to be detachably connected to the clamping plate 41.

[0045] Reference Figure 1 and Figure 2 The buckle plate 9 is detached and installed on the clamp body 5. A connecting bolt 6 passes through and is threaded onto the buckle plate 9. Both the clamp body 5 and the buckle plate 9 are perpendicular to the clamping and fixing plate 41. The area between the buckle plate 9 and the clamp body 5 is the crystal placement area. The connecting bolt 6 is used to abut against the crystal, and the moving direction of the connecting bolt 6 is towards the clamp body 5. The cross-sectional profile of the buckle plate 9 is U-shaped, C-shaped, V-shaped, or trapezoidal. Buckles 9 in U-shaped, C-shaped, V-shaped, or trapezoidal shapes can stably clamp the crystal. In this embodiment, the cross-sectional profile of the buckle plate 9 is U-shaped. A limiting groove 52 is formed on the side wall of the clamp body 5 facing the buckle plate 9. The opening direction of the limiting groove 52 is towards the buckle plate 9. The cross-sectional profile of the groove wall of the limiting groove 52 is V-shaped, trapezoidal, or semi-circular. In this embodiment, the cross-sectional profile of the groove wall of the limiting groove 52 is V-shaped. The crystal is held in the limiting groove 52, which can limit the displacement of the crystal and more stably clamp and fix it.

[0046] Reference Figure 1 and Figure 2Place the upper crystal 2 and the lower crystal 3 between the buckle plate 9 and the clamp body 5, and rotate the abutment bolt 6 to tighten them against the upper crystal 2 and the lower crystal 3. If the height of the lower crystal 3 and the upper crystal 2 exceeds the height of the buckle plate 9 itself, then arrange two clamps. The buckle plates 9 of the two clamps are used to clamp the upper crystal 2 and the lower crystal 3 separately, and the abutment bolts 6 of the two clamps abut against the upper crystal 2 and the lower crystal 3 separately.

[0047] Reference Figure 1 and Figure 2 Multiple snap-fit ​​grooves 51 are provided on the two side walls of the clamp body 5 that are far apart from each other. The arrangement direction of the multiple snap-fit ​​grooves 51 is perpendicular to the clamping and fixing plate 41. The two ends of the buckle plate 9 are provided with snap-fit ​​parts 91, and the snap-fit ​​parts 91 at both ends of the buckle plate 9 are respectively snapped into the snap-fit ​​grooves 51 on both sides of the clamp body 5.

[0048] The snap-fit ​​portion 91 of the snap plate 9 is snapped into the snap-fit ​​groove 51. The crystal is placed between the snap plate 9 and the clamp body 5. While the abutting bolt 6 is tightened against the crystal, it can pull the snap plate 9 away from the clamp body 5, so that the snap plate 9 is stably fixed to the clamp body 5. Furthermore, by setting multiple snap-fit ​​grooves 51, the relative position of the snap plate 9 and the clamp body 5 can be adjusted to adjust the distance between the snap plate 9 and the clamp, which can adapt to the stable clamping and fixing of crystals of different sizes.

[0049] First, the ground and polished lower crystal 3 and upper crystal 2 are placed in the clamping plates 9 of the two clamps respectively. By tightening the two abutment bolts 6, the clamping bodies 5 and clamping plates 9 of the two clamps stably clamp and position the lower crystal 3 and upper crystal 2 respectively, so that the lower crystal 3 and upper crystal 2 remain coaxially overlapped.

[0050] After the lower crystal 3 and upper crystal 2 are installed relative to each other using the clamping fixture, the base plate 4 is placed at the bottom of the outer cylinder 1 to allow the clamping fixing plate 41 to be installed inside the outer cylinder 1, ensuring that the lower crystal 3, upper crystal 2, and outer cylinder 1 are coaxially aligned. Alumina balls 13 are added into the outer cylinder 1, covering the bottom wall of the outer cylinder 1 and reaching the upper side wall of the upper crystal 2. Then, the top plate 11 is placed inside the outer cylinder 1 and rests on the upper side wall of the upper crystal 2. A specified pressure is applied to the top plate 11 to transmit pressure to the upper crystal 2 and lower crystal 3, thereby achieving bonding between the upper crystal 2 and lower crystal 3.

[0051] The clamp can accurately position and bond two crystals. After positioning the crystals, alumina spheres 13 are filled in as a pressure transmission medium to disperse the pressure on the top of the crystals. Because the diameter of the alumina spheres 13 is very small, on the order of millimeters, they have good fluidity. Through pressure transmission, the pressure surface is made into complete contact with the crystal surface, thereby achieving uniform pressure on the outer surface of the crystal element and reducing the inconsistency of crystal deformation. When using alumina spheres 13 as a pressure transmission medium, defects at the bonding surface of the crystal element can be significantly reduced. Furthermore, since the clamping plate 41 is detachable from the outer cylinder 1, the clamping assembly can apply uniform pressure to the upper crystal 2 and the lower crystal 3 during the photopolymerization and heat treatment stages.

[0052] Reference Figure 1 and Figure 2 An alumina brick 12 of the required weight is placed on the top plate 11. The protrusion 111 in the center of the top plate 11 is inserted into the groove of the alumina brick 12, so that the crystal pressure applied below is centrally symmetrically distributed.

[0053] Reference Figure 1 and Figure 2 A positioning piece 7 and a washer 8 are clamped between the clamp body 5 and the clamping fixing plate 41. A fixing bolt 10 passes through the positioning piece 7 and the washer 8. Positioning pieces 7 of different thicknesses can be replaced between the clamp body 5 and the clamping fixing plate 41. By replacing the positioning pieces 7 of different thicknesses between the clamp body 5 and the clamping fixing plate 41, the lateral position of the clamp body 5 can be adjusted, so that the center of the upper crystal 2 and the lower crystal 3 coincides with the center of the outer cylinder 1. The top plate 11 can then evenly apply force to the upper crystal 2 and the lower crystal 3.

[0054] The implementation principle of a large-size crystal bonding clamping device according to this utility model embodiment is as follows: First, the lower crystal 3 and the upper crystal 2, which have been ground and polished, are placed in the buckle plates 9 of the two clamps respectively. By tightening the two abutment bolts 6, the clamping bodies 5 and buckle plates 9 of the two clamps stably clamp and position the lower crystal 3 and the upper crystal 2 respectively, so that the lower crystal 3 and the upper crystal 2 remain in a coaxial overlapping state.

[0055] After the lower crystal 3 and upper crystal 2 are installed relative to the clamp, the base plate 4 is placed at the bottom of the outer cylinder 1 to ensure that the clamping and fixing plate 41 is installed inside the outer cylinder 1, and that the lower crystal 3, upper crystal 2, and outer cylinder 1 are coaxially aligned. Alumina balls 13 are added into the outer cylinder 1, covering the bottom wall of the outer cylinder 1, with the filling height reaching the upper side wall of the upper crystal 2. Then, the top plate 11 is placed inside the outer cylinder 1 and rests on the upper side wall of the upper crystal 2. A specified pressure is applied to the top plate 11 to transmit pressure to the upper crystal 2 and lower crystal 3, thereby achieving bonding between them. The clamp can accurately position and bond the two crystals. After positioning the crystals, alumina balls 13 are added as a pressure transmission medium to disperse the pressure at the top of the crystals.

[0056] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A large-size crystal bonding clamping device, characterized in that: The device includes an outer cylinder (1) with an upper opening and a clamping assembly disposed inside the outer cylinder (1). The clamping assembly includes a clamping fixing plate (41) detachably disposed on the inner wall of the outer cylinder (1) and a clamp disposed on the clamping fixing plate (41). The clamping fixing plate (41) is perpendicular to the bottom wall of the outer cylinder (1). The number of clamps is at least one, and at least one clamp is arranged at intervals along the height direction of the clamping fixing plate (41). The clamp is used to clamp and fix crystals. The outer cylinder (1) is provided with a top plate (11). The outer diameter of the top plate (11) is equal to the inner diameter of the outer cylinder (1). The top plate (11) is located above the clamp. The clamping fixing plate (41) passes through and slides to be connected to the top plate (11). The space between the top plate (11) and the bottom wall of the outer cylinder (1) is filled with alumina balls (13).

2. The large-size crystal bonding clamping device according to claim 1, characterized in that: The diameter of the alumina spheres (13) is 0.8-1.2 mm.

3. The large-size crystal bonding clamping device according to claim 1, characterized in that: An alumina brick (12) is placed on top of the top plate (11).

4. The large-size crystal bonding clamping device according to claim 1, characterized in that: The clamp includes a clamp body (5) detachably mounted on the clamping fixing plate (41), a buckle plate (9) detachably mounted on the clamp body (5), and an abutment bolt (6) threadedly connected to the buckle plate (9). The clamp body (5) and the buckle plate (9) are both perpendicular to the clamping fixing plate (41). The area between the buckle plate (9) and the clamp body (5) is a crystal placement area. The abutment bolt (6) is located on the buckle plate (9) away from the clamp body (5) to abut the crystal.

5. The large-size crystal bonding clamping device according to claim 4, characterized in that: The clamp body (5) has a groove on one side wall facing the buckle plate (9), and the opening of the groove faces the buckle plate (9).

6. The large-size crystal bonding clamping device according to claim 5, characterized in that: The cross-sectional profile of the groove wall is V-shaped, trapezoidal, or semi-circular.

7. The large-size crystal bonding clamping device according to claim 4, characterized in that: The clamp body (5) has multiple snap-fit ​​grooves (51) on its two opposite side walls. The multiple snap-fit ​​grooves (51) are arranged perpendicular to the clamping and fixing plate (41). The buckle plate (9) has snap-fit ​​parts (91) at both ends. The snap-fit ​​parts (91) at both ends of the buckle plate (9) are respectively snapped into the snap-fit ​​grooves (51) on both sides of the clamp body (5).

8. A large-size crystal bonding clamping device according to claim 4, characterized in that: The clamping plate (41) has multiple fixing holes (42) arranged in an array. The clamp body (5) is threaded with fixing bolts (10). The fixing bolts (10) are also threaded through the fixing holes (42). The screw head of the fixing bolts (10) and the clamp body (5) are located on both sides of the clamping plate (41).

9. A large-size crystal bonding clamping device according to claim 8, characterized in that: A positioning piece (7) is clamped between the clamp body (5) and the clamping fixing plate (41), and the fixing bolt (10) passes through the positioning piece (7). Positioning pieces (7) of different thicknesses can be replaced between the clamp body (5) and the clamping fixing plate (41).

10. A large-size crystal bonding clamping device according to claim 1, characterized in that: The bottom of the outer cylinder (1) is provided with a base plate (4), the diameter of which is equal to the inner diameter of the outer cylinder (1). The clamping and fixing plate (41) is vertically fixed to the base plate (4). The space between the top plate (11) and the base plate (4) is filled with alumina balls (13).

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