A crucible positioning jig for crystal growth

Abstract

The utility model relates to a kind of for the positioning fixture of crucible growth, including seat, the seat is equipped with placing groove, the upper part of the seat is hinged with the cover body capable of covering placing groove, the cover body is equipped with push plate and the driving member for driving push plate moves in up-down direction, the placing groove is equipped with the transmission sleeve capable of moving in up-down direction, the seat is hinged with multiple clamping jaws being arranged in placing groove in circumferential direction, when the cover body covers placing groove, the driving member drives push plate to move downwards, so that the push plate is to card into placing groove to limit the relative rotation between cover body and seat, and simultaneously push the transmission sleeve moves downwards, cause transmission sleeve lower portion to press each clamping jaw outside to drive multiple clamping jaws to rotate inwards. Through the setting of push plate and transmission sleeve, the operator can simultaneously drive clamping jaw to clamp crucible while locking cover body, so as to reduce the operation step of positioning fixture, improve clamping efficiency.

Description

Technical Field

[0001] This utility model relates to the field of crystal material preparation technology, specifically to a crucible positioning fixture for crystal growth. Background Technology

[0002] During crystal growth, it is essential to ensure the crucible remains in a stable position to improve crystal growth quality and efficiency. When using existing crucible positioning fixtures, operators typically need to first unlock the fixture cover, place the crucible on the fixture base, and then drive the individual jaws to clamp the crucible from all sides towards the center by rotating multiple bolts or handles. Finally, the cover must be locked again. This process is cumbersome and time-consuming. Utility Model Content

[0003] The purpose of this invention is to provide a crucible positioning fixture for crystal growth, thereby solving the above-mentioned problems.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a crucible positioning fixture for crystal growth, including a base body, a placement groove for placing the crucible on the base body, a cover body that can cover the placement groove hinged to the upper part of the base body, a push plate and a driving member for driving the push plate to move in the vertical direction on the cover body, a transmission sleeve that can move in the vertical direction is sleeved in the placement groove, and a plurality of grippers arranged circumferentially in the placement groove hinged to the base body. When the cover body rotates to the position of covering the placement groove, the driving member drives the push plate to move downward, so that the push plate is engaged in the placement groove to restrict the relative rotation between the cover body and the base body, and at the same time pushes the transmission sleeve downward, so that the lower part of the transmission sleeve presses against the outer side of each gripper to drive the plurality of grippers to rotate inward, and the inner side of each gripper is provided with a clamping end that matches the outer wall of the crucible.

[0005] As a further optimization of this utility model, the cover is provided with a receiving groove for accommodating the push plate. When the driving member drives the push plate to move upward to the highest position, the bottom of the push plate is retracted into the receiving groove.

[0006] As a further optimization of this utility model, the driving component is a screw, and the cover has a clearance hole for the screw to extend in the up and down direction. The inner wall of the clearance hole has an internal thread that is threaded to the screw. One end of the screw is fixedly connected to the push plate, and the other end of the screw is provided with a screwing part.

[0007] As a further optimization of this utility model, a reinforcing flange is provided on the upper part of the cover around the avoidance hole.

[0008] As a further optimization of this utility model, the placement groove is a cylindrical groove, and the push plate is cylindrical in shape that matches the diameter of the placement groove.

[0009] As a further optimization of this utility model, an elastic element is provided between the gripper and the base to drive the gripper to rotate outward.

[0010] As a further optimization of this utility model, the transmission sleeve is coaxially arranged with the placement groove, and the outer side wall of the transmission sleeve abuts against the inner side wall of the placement groove.

[0011] As a further optimization of this utility model, the number of grippers is four, and the four grippers are arranged at equal intervals along the circumference of the placement groove.

[0012] Compared with the prior art, the present invention has the following advantages: by setting up the push plate and the transmission sleeve, the operator can lock the cover while simultaneously driving the gripper to clamp the crucible, thereby reducing the operation steps of the positioning fixture and improving the clamping efficiency. Attached Figure Description

[0013] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the present invention. Detailed Implementation

[0017] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0018] A crucible positioning fixture for crystal growth includes a base 1 with a placement groove 11 for placing the crucible. A cover 2, which covers the placement groove 11, is hinged to the upper part of the base 1. The cover 2 has a push plate 3 and a driving member 4 for driving the push plate 3 to move vertically. A transmission sleeve 5, which can move vertically, is fitted inside the placement groove 11. A plurality of grippers 6, which are circumferentially arranged in the placement groove 11, are hinged to the base 1. When the cover 2 rotates to the position covering the placement groove 11, the driving member 4 drives the push plate 3 to move downward, so that the push plate 3 is engaged in the placement groove 11 to restrict the relative rotation between the cover 2 and the base 1. At the same time, the transmission sleeve 5 is pushed downward, so that the lower part of the transmission sleeve 5 presses against the outer side of each gripper 6 to drive the plurality of grippers 6 to rotate inward. The inner side of each gripper 6 has a clamping end 61 that matches the outer wall of the crucible.

[0019] like Figure 3As shown, in this embodiment, the cover 2 is hinged to the base 1 via a hinge shaft arranged vertically, allowing the cover 2 to rotate relative to the base 1 around the hinge shaft. When the cover 2 rotates to the closed position, it covers the placement groove 11. A push plate 3 is disposed on the side of the cover 2 facing the base 1, and a drive member 4 is connected to the push plate 3 to drive the push plate 3 to move linearly in a direction perpendicular to the top surface of the base 1. The placement groove 11 is a groove disposed on the base 1 and opening upwards. A collar or other mechanism can be disposed in the placement groove 11 to achieve initial positioning of the crucible. The transmission sleeve 5 is a cylindrical component fitted inside the placement groove 11, which can slide along the axial direction of the placement groove 11. The inner diameter of the transmission sleeve 5 is larger than the outer diameter of the crucible so that the crucible can be smoothly placed in or removed. Multiple grippers 6 are provided and are evenly arranged circumferentially within the annular space of the placement groove 11. In one embodiment, each gripper 6 is hinged to the base 1 by a hinge pin, so that each gripper 6 can swing in the horizontal plane about its own hinge point. The inner side of each gripper 6 is provided with a clamping end 61 that matches the outer wall of the crucible, and the clamping end 61 contacts and fixes the crucible when clamping.

[0020] In one embodiment, the positioning fixture is used as follows: The operator rotates the cover 2 around the hinge axis to open it, exposing the placement groove 11. The crucible to be used is placed into the placement groove 11, and then the cover 2 is rotated back to the closed position, so that it completely covers the placement groove 11. At this time, the push plate 3 is located directly above the placement groove 11. Then, the operator drives the push plate 3 downward through the drive component 4. The push plate 3 is inserted into the placement groove 11, thereby locking the position of the cover 2 relative to the base 1, preventing it from being accidentally opened due to vibration or other reasons during subsequent operations or crystal growth. During the downward movement of the push plate 3, its lower end face pushes the upper end face of the transmission sleeve 5, causing the transmission sleeve 5 to move downward as a whole. As the transmission sleeve 5 moves downward, the lower part of the transmission sleeve 5 presses against the outer side of each clamp 6. Under the action of external force, the clamp 6 swings inward around its respective hinge point, and its inner clamping end contacts and presses against the outer wall of the crucible, finally fixing the crucible in the center position of the placement groove 11.

[0021] By setting up the push plate 3 and the transmission sleeve 5, the operator can lock the cover 2 while simultaneously driving the gripper 6 to clamp the crucible, thereby reducing the operation steps of the positioning fixture and improving the clamping efficiency.

[0022] The cover 2 has a receiving groove 21 for accommodating the push plate 3. When the driving member 4 drives the push plate 3 to move upward to the highest position, the bottom of the push plate 3 is retracted into the receiving groove 21.

[0023] like Figure 3As shown in the embodiment, the receiving groove 21 is a recessed groove-shaped structure opened on the side of the cover 2 facing the seat 1. The position of the receiving groove 21 corresponds to the installation position of the push plate 3 on the cover 2. By setting the receiving groove 21 and storing the push plate 3 in it, it can be ensured that the push plate 3 will not physically interfere with the surrounding structure during the entire process of rotating and opening the cover 2, thus ensuring the safety and smoothness of operation.

[0024] The driving component 4 is a screw 41. The cover 2 has a clearance hole 22 for the screw 41 to extend in the vertical direction. The inner wall of the clearance hole 22 has an internal thread that is threaded to the screw 41. One end of the screw 41 is fixedly connected to the push plate 3, and the other end of the screw 41 is provided with a screwing part 42.

[0025] like Figure 2 As shown in the embodiment, the driving component 4 is a cylindrical rod with external threads, namely a screw 41, which is arranged axially in the vertical direction. The inner wall of the clearance hole 22 is provided with an internal thread that matches the external thread of the screw 41, so that the screw 41 can be screwed into the cover 2 through threaded engagement. When the screw 41 rotates about its own axis, due to the lead effect of the thread, the screw 41 produces a linear axial movement in the clearance hole 22, and drives the push plate 3 fixedly connected to it to move up and down. The screwing part 42 can provide an application point for the operator to drive the screw 41 to rotate.

[0026] The upper part of the cover 2 is provided with a reinforcing flange 23 around the clearance hole 22. By providing a coaxial reinforcing flange 23 around the clearance hole 22 on the upper part of the cover 2, the structural strength is enhanced, the reliability of the threaded connection is improved, and the long-term stability of the fixture under repeated operation is ensured.

[0027] The drive component 4 can also be implemented in other ways, such as by using a cylinder or servo motor in conjunction with a lead screw and nut mechanism to drive the push plate 3 to move in the up and down direction.

[0028] The placement groove 11 is a cylindrical groove, and the push plate 3 is cylindrical in shape that matches the diameter of the placement groove 11. By designing the placement groove 11 as a cylindrical groove and the push plate 3 as a cylindrical shape that matches its diameter, the locking function between the cover and the seat is achieved through a simple structure, while also providing good guidance for the linear movement of the push plate.

[0029] In one embodiment, the side wall of the placement groove 11 is provided with a limiting groove arranged in the vertical direction, and the side wall of the push plate 3 is provided with a limiting protrusion that cooperates with the limiting groove. The cooperation between the limiting groove and the limiting protrusion further improves the stability of the push plate 3 moving in the placement groove 11.

[0030] An elastic element 7 is provided between the gripper 6 and the base 1 to drive the gripper 6 to rotate outward. The elastic element 7 can be implemented by components such as springs and elastic blocks. The setting of the elastic element 7 enables the gripper 6 to automatically reset after the clamping action is released, ensuring that the crucible can be smoothly taken out and put in, improving the convenience and automation of operation.

[0031] The transmission sleeve 5 is coaxially arranged with the placement groove 11, and the outer side wall of the transmission sleeve 5 abuts against the inner side wall of the placement groove 11, so that the inner side wall of the placement groove 11 serves as a guide surface, providing circumferential continuous support and constraint to the outer side wall of the transmission sleeve 5, thereby ensuring the guiding accuracy and stability of the transmission sleeve during movement.

[0032] The number of grippers 6 is four, and the four grippers 6 are arranged at equal intervals along the circumference of the placement groove 11, so that the grippers 6 cooperate with each other to provide a highly symmetrical clamping force in the circumference, effectively preventing the crucible from tilting or becoming eccentric during the clamping process.

Claims

1. A crucible positioning jig for crystal growth, characterized by, Includes a base (1), on which a placement groove (11) for placing a crucible is provided. A cover (2) is hinged to the upper part of the base (1) to cover the placement groove (11). A push plate (3) and a drive component (4) for driving the push plate (3) to move vertically are provided on the cover (2). A transmission sleeve (5) capable of moving vertically is fitted inside the placement groove (11). Multiple grippers (6) arranged circumferentially within the placement groove (11) are hinged to the base (1). When… When the cover (2) rotates to the position of covering the placement groove (11), the driving member (4) drives the push plate (3) to move downward, so that the push plate (3) is inserted into the placement groove (11) to restrict the relative rotation between the cover (2) and the seat (1), and at the same time pushes the transmission sleeve (5) to move downward, so that the lower part of the transmission sleeve (5) presses against the outer side of each clamp (6) to drive multiple clamps (6) to rotate inward. The inner side of each clamp (6) is provided with a clamping end (61) that matches the outer wall of the crucible.

2. A crucible positioning jig for crystal growth according to claim 1, wherein The cover (2) has a receiving groove (21) for accommodating the push plate (3). When the driving member (4) drives the push plate (3) to move upward to the highest position, the bottom of the push plate (3) is retracted into the receiving groove (21).

3. A crucible positioning jig for crystal growth according to claim 2, wherein The driving component (4) is a screw (41). The cover (2) has a clearance hole (22) for the screw (41) to extend in the up and down direction. The inner wall of the clearance hole (22) has an internal thread that is threaded to the screw (41). One end of the screw (41) is fixedly connected to the push plate (3), and the other end of the screw (41) is provided with a screwing part (42).

4. A crucible positioning jig for crystal growth according to claim 3, wherein The upper part of the cover (2) is provided with a reinforcing flange (23) around the clearance hole (22).

5. A crucible positioning fixture for crystal growth as defined in claim 1 wherein, The placement groove (11) is a cylindrical groove, and the push plate (3) is cylindrical in shape that matches the diameter of the placement groove (11).

6. A crucible positioning fixture for crystal growth as defined in claim 1 wherein, An elastic element (7) is provided between the gripper (6) and the seat (1) to drive the gripper (6) to rotate outward.

7. A crucible positioning fixture for crystal growth as defined in claim 1 wherein, The transmission sleeve (5) is coaxially arranged with the placement groove (11), and the outer side wall of the transmission sleeve (5) abuts against the inner side wall of the placement groove (11).

8. A crucible positioning fixture for crystal growth as defined in claim 1 wherein, The number of grippers (6) is four, and the four grippers (6) are arranged at equal intervals along the circumference of the placement groove (11).

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