Tool clamp for lithium tantalate crystal growth charging

Abstract

The utility model discloses a tool clamp for lithium tantalate crystal growth charging, which belongs to the technical field of crystal manufacturing and comprises a bottom plate, the top of the bottom plate is connected with a front-back carrying component for conveying a crucible, and the upper end of the front-back carrying component is connected with a self-opening and self-closing clamp for automatically clamping the crucible. When pot loading is needed, the self-opening and closing clamp is moved to the position above a crucible through the front-back carrying assembly, at the moment, the self-opening and closing clamp is started, the crucible is automatically clamped while the self-opening and closing clamp moves downwards, at the moment, the front-back carrying assembly is started to convey the self-opening and closing clamp and the crucible to the position above a furnace, and at the moment, the self-opening and closing clamp is started; when the automatic opening and closing clamp drives the crucible to move downwards, clamping of the crucible is released at the same time, and automatic clamping and releasing of the crucible are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crystal manufacturing, in particular to a tool fixture for charging a furnace for growing lithium tantalate crystals. Background Art

[0002] Lithium tantalate crystals are widely used in surface acoustic wave devices, bulk acoustic wave devices, piezoelectric sensors, electro-optical devices, and pyroelectric detectors due to their high Curie temperature, good physical and chemical stability, ability to withstand high-energy infrared radiation, and fast rise time. Currently, lithium tantalate crystals are mainly grown using the induction heating iridium crucible pulling method.

[0003] The existing technology for producing lithium tantalate crystals mostly involves manual furnace loading. Due to the high temperature during lithium tantalate crystal production, manual crucible transportation is relatively dangerous. When clamping with a clamp, at least three driving parts are required: transportation, lifting and clamping, which is costly and complicated to operate.

[0004] Based on this, the utility model designs a tooling fixture for loading a furnace for growing lithium tantalate crystals to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a tooling fixture for loading a furnace for growing lithium tantalate crystals.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A fixture for loading a furnace for growing lithium tantalate crystals, comprising a bottom plate;

[0008] The top of the bottom plate is connected to a front and rear transport assembly for transporting the crucible;

[0009] The upper ends of the front and rear transport assemblies are connected with a self-opening and closing clamp for automatically clamping the crucible.

[0010] Furthermore, it is characterized in that the front and rear transport components include an arch frame, a first motor and a first threaded rod, the top of the base plate is slidably connected to the arch frame, the rear end of the base plate is fixedly connected to the first motor, the output end of the first motor is fixedly connected to the first threaded rod, the first threaded rod passes through the lower side of the left end of the arch frame and is threadedly connected to the arch frame, and the front end of the first threaded rod is rotatably connected to the base plate.

[0011] Furthermore, the self-opening and closing clamp includes a lifting assembly, a clamping assembly and a self-opening and closing clamp driving assembly. The arch frame is connected to a lifting assembly for driving the crucible to move up and down, the middle part of the lifting assembly is connected to a clamping assembly for clamping the crucible, the middle part of the lifting assembly is connected to a self-opening and closing clamp driving assembly for driving the clamping assembly, and the lower end of the self-opening and closing clamp driving assembly is connected to the clamping assembly.

[0012] Furthermore, the lifting assembly includes a second motor, a second threaded rod, a support plate and a limiting guide rod. The second motor is fixedly connected to the top of the right end of the arch frame, the output end of the second motor is fixedly connected to the second threaded rod, the lower end of the second threaded rod is rotatably connected to the lower end of the arch frame, the second threaded rod passes through the right end of the support plate and is threadedly connected to the support plate, and the left end of the support plate has several groups of limiting guide rods passing through the support plate and slidingly connected to the support plate, the upper and lower ends of the limiting guide rod are fixedly connected to the arch frame, and the middle part of the support plate is connected to the clamping assembly and the self-opening and closing clamp driving assembly.

[0013] Furthermore, the clamping assembly includes extrusion rods and extrusion blocks, a plurality of groups of extrusion rods are slidably connected to the middle of the support plate, and the bottoms of the extrusion rods are fixedly connected to the extrusion blocks.

[0014] The top end of the driving member is connected to the support plate and the support frame, and the bottom end of the driving member is fixedly connected to the driving rotating plate. The driving rotating plate is provided with a plurality of groups of driving inclined slide grooves around the driving rod, and each group of driving inclined slide grooves has a group of extrusion rods passing through the driving inclined slide groove and slidingly connected to the driving inclined slide groove. The outer wall of the driving rod is provided with a plurality of groups of limiting slide grooves, and the inner wall of the sliding hole is fixedly connected with a plurality of limiting slide blocks corresponding to the limiting slide grooves.

[0015] Furthermore, the upper end of the limiting sliding groove is a threaded sliding groove, and the lower end of the limiting sliding groove is a straight sliding groove.

[0016] Furthermore, the sliding direction of the extrusion rod is towards the central axis of the driving rod.

[0017] The utility model has the following technical effects:

[0018] When the furnace needs to be loaded, the first motor is started, the first motor drives the first threaded rod to rotate, the first threaded rod drives the arch frame to move forward, and the arch frame drives the support plate to move forward. When the support plate moves to the top of the furnace, the first motor is turned off. At this time, the second motor is started, and the second motor drives the support plate to move downward under the limit of the limit guide rod through the second threaded rod. The support plate drives the crucible to move downward through the extrusion rod and the extrusion block, and the support plate simultaneously drives the driving rotating rod and the driving rotating plate to move downward. At this time, the limiting slider slides in the straight slide groove part of the limiting slide groove. When the driving rotating rod drops to the limit slider and enters the threaded slide groove part of the limiting slide groove, the limiting slider drives the driving rotating rod to rotate under the limit of the limiting slide groove, and the driving rotating rod drives the driving rotating plate to rotate. The driving rotating plate drives the driving inclined slide to rotate. Since the sliding direction of the extrusion rod is toward the central axis of the driving rotating rod, the driving inclined slide synchronously drives all the extrusion rods and extrusion blocks to move in the direction of approaching each other, thereby realizing automatic release of the crucible. At this time, the support platform holding the crucible drops down. When the crucible is under the extrusion block, the second motor is started to drive the support plate to move upward. At this time, under the limit of the limiting slide, the driving rotating rod drives the driving rotating plate to rotate in the opposite direction, so that when the crucible needs to be clamped, the support platform lifts the crucible to between the extrusion blocks and the second motor can be directly started, so that under the limit of the limiting slide, the extrusion block moves upward and squeezes and clamps the crucible from the inside, thereby realizing automatic clamping of the crucible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0020] Figure 1 The three-dimensional structure of a tool fixture for lithium tantalate crystal growth furnace of the utility model Figure 1 ;

[0021] Figure 2 The three-dimensional structure of a tool fixture for lithium tantalate crystal growth furnace of the utility model Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the limiting slide structure of a fixture for loading a furnace for lithium tantalate crystal growth according to the present invention;

[0023] Figure 4 The utility model is a schematic diagram of the limit slider structure of a tool fixture for lithium tantalate crystal growth furnace loading.

[0024] In the accompanying drawings: 1. Base plate; 2. Front and rear transport components; 21. Arch frame; 22. First motor; 23. First threaded rod; 3. Self-opening and closing clamp; 31. Lifting component; 311. Second motor; 312. Second threaded rod; 313. Support plate; 314. Limiting guide rod; 32. Clamping component; 321. Extrusion rod; 322. Extrusion block; 33. Self-opening and closing clamp driving component; 331. Driving rotating rod; 332. Limiting slide; 333. Limiting slider; 334. Driving rotating plate; 335. Driving inclined slide; 336. Sliding hole. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example

[0028] Please refer to the instruction manual Figure 1-4 , a fixture for charging a furnace for growing lithium tantalate crystals, comprising a bottom plate 1;

[0029] The top of the bottom plate 1 is connected to a front and rear transport assembly 2 for transporting the crucible;

[0030] The upper end of the front and rear transport assembly 2 is connected to a self-opening and closing clamp 3 for automatically clamping the crucible;

[0031] The front and rear transport assembly 2 includes an arch frame 21, a first motor 22 and a first threaded rod 23. The top of the base plate 1 is slidably connected to the arch frame 21, the rear end of the base plate 1 is fixedly connected to the first motor 22, and the output end of the first motor 22 is fixedly connected to the first threaded rod 23. The first threaded rod 23 passes through the lower side of the left end of the arch frame 21 and is threadedly connected to the arch frame 21. The front end of the first threaded rod 23 is rotatably connected to the base plate 1;

[0032] The self-opening and closing fixture 3 includes a lifting assembly 31, a clamping assembly 32 and a self-opening and closing fixture driving assembly 33. The lifting assembly 31 for driving the crucible to move up and down is connected to the arch frame 21. The middle part of the lifting assembly 31 is connected to the clamping assembly 32 for clamping the crucible. The middle part of the lifting assembly 31 is connected to the self-opening and closing fixture driving assembly 33 for driving the clamping assembly 32. The lower end of the self-opening and closing fixture driving assembly 33 is connected to the clamping assembly 32.

[0033] The lifting assembly 31 includes a second motor 311, a second threaded rod 312, a support plate 313 and a limiting guide rod 314. The second motor 311 is fixedly connected to the top of the right end of the arch frame 21, and the output end of the second motor 311 is fixedly connected to the second threaded rod 312. The lower end of the second threaded rod 312 is rotatably connected to the lower end of the arch frame 21. The second threaded rod 312 passes through the right end of the support plate 313 and is threadedly connected to the support plate 313. The left end of the support plate 313 has several groups of limiting guide rods 314 passing through the support plate 313 and slidingly connected to the support plate 313. The upper and lower ends of the limiting guide rod 314 are fixedly connected to the arch frame 21. The middle part of the support plate 313 is connected to the clamping assembly 32 and the self-opening and closing clamp driving assembly 33;

[0034] The clamping assembly 32 includes a squeeze rod 321 and a squeeze block 322. The middle of the support plate 313 is slidably connected to a plurality of squeeze rods 321, and the bottom of each squeeze rod 321 is fixedly connected to a squeeze block 322.

[0035] The self-opening and closing clamp driving assembly 33 includes a driving rod 331, a limiting slide 332, a limiting slider 333, a driving rotating plate 334, a driving inclined slide 335 and a sliding hole 336. A sliding hole 336 is provided in the middle of the top plate of the arch frame 21. The lower end of the driving rotating rod 331 passes through the support plate 313 and is rotatably connected to the support plate 313. The bottom of the driving rotating rod 331 is fixedly connected to the driving rotating plate 334. The driving rotating plate 334 has several holes around the driving rotating rod 331. A plurality of driving inclined slots 335 are provided. Each of the driving inclined slots 335 has a group of extrusion rods 321 passing through the driving inclined slots 335 and slidingly connected to the driving inclined slots 335. A plurality of groups of limiting slots 332 are provided on the outer wall of the driving rotating rod 331. A plurality of groups of limiting sliders 333 corresponding to the limiting slots 332 are fixedly connected to the inner wall of the sliding hole 336. The ends of the limiting sliders 333 close to the limiting slots 332 are all slidably connected to the limiting slots 332.

[0036] The upper end of the limiting slide groove 332 is a threaded slide groove, and the lower end of the limiting slide groove 332 is a straight slide groove;

[0037] The sliding direction of the extrusion rod 321 is toward the central axis of the driving rotating rod 331;

[0038] One end of the extrusion blocks 322 facing each other is a curved surface;

[0039] When the first motor 311 is lowered to the limit position of the first motor 312, the second motor 311 drives the support plate 313 to move downward under the limit guide rod 314, and the support plate 313 drives the crucible 313 to move downward through the extrusion rod 321 and the extrusion block 322. At this time, the support plate 313 drives the driving rotating rod 331 and the driving rotating plate 334 to move downward. When the cam 331 is in the closed position, the second motor 311 is started to rotate, and the second motor 311 is started to rotate in the opposite direction under the limit of the limit slot 332. When the cam 331 is in the closed position, the second motor 311 is started to rotate, so that when the cam 331 is in the closed position, the cam 331 is lifted up and the cam 332 is lifted up, thereby squeezing and clamping the cam 332 from the inside.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fixture for loading a furnace for growing lithium tantalate crystals, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is connected to a front and rear transport assembly (2) for transporting the crucible; The upper end of the front and rear transport assembly (2) is connected to a self-opening and closing clamp (3) for automatically clamping the crucible.

2. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 1, characterized in that: The front and rear transport assembly (2) comprises an arch frame (21), a first motor (22) and a first threaded rod (23); the top of the base plate (1) is slidably connected to the arch frame (21); the rear end of the base plate (1) is fixedly connected to the first motor (22); the output end of the first motor (22) is fixedly connected to the first threaded rod (23); the first threaded rod (23) passes through the lower left end of the arch frame (21) and is threadedly connected to the arch frame (21); the front end of the first threaded rod (23) is rotatably connected to the base plate (1).

3. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 2, characterized in that: The self-opening and closing clamp (3) comprises a lifting assembly (31), a clamping assembly (32) and a self-opening and closing clamp driving assembly (33); the arch frame (21) is connected to the lifting assembly (31) for driving the crucible to move up and down; the middle of the lifting assembly (31) is connected to the clamping assembly (32) for clamping the crucible; the middle of the lifting assembly (31) is connected to the self-opening and closing clamp driving assembly (33) for driving the clamping assembly (32); the lower end of the self-opening and closing clamp driving assembly (33) is connected to the clamping assembly (32).

4. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 3, characterized in that: The lifting assembly (31) includes a second motor (311), a second threaded rod (312), a support plate (313) and a limiting guide rod (314). The top right end of the arch frame (21) is fixedly connected to the second motor (311). The output end of the second motor (311) is fixedly connected to the second threaded rod (312). The lower end of the second threaded rod (312) is rotatably connected to the lower end of the arch frame (21). The second threaded rod (312) passes through the right end of the support plate (313) and is threadedly connected to the support plate (313). The left end of the support plate (313) has several groups of limiting guide rods (314) passing through the support plate (313) and slidingly connected to the support plate (313). The upper and lower ends of the limiting guide rod (314) are fixedly connected to the arch frame (21). The middle part of the support plate (313) is connected to the clamping assembly (32) and the self-opening and closing clamp driving assembly (33).

5. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 4, characterized in that: The clamping assembly (32) comprises an extrusion rod (321) and an extrusion block (322); a plurality of groups of extrusion rods (321) are slidably connected to the middle of the support plate (313); and the bottoms of the extrusion rods (321) are fixedly connected to the extrusion blocks (322).

6. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 5, characterized in that: The self-opening and closing clamp driving assembly (33) includes a driving rotating rod (331), a limiting sliding groove (332), a limiting sliding block (333), a driving rotating plate (334), a driving inclined sliding groove (335) and a sliding hole (336). A sliding hole (336) is provided in the middle of the top plate of the arch frame (21). The lower end of the driving rotating rod (331) passes through the support plate (313) and is rotatably connected to the support plate (313). The bottom of the driving rotating rod (331) is fixedly connected to the driving rotating plate (334). The driving rotating plate (334) rotates around the driving rotating rod (331). A plurality of groups of driving inclined slide grooves (335) are provided, and a group of extrusion rods (321) pass through the driving inclined slide grooves (335) and are slidably connected to the driving inclined slide grooves (335) in each group of driving inclined slide grooves (335). A plurality of groups of limiting slide grooves (332) are provided on the outer wall of the driving rotating rod (331), and a plurality of groups of limiting sliding blocks (333) corresponding to the limiting slide grooves (332) are fixedly connected to the inner wall of the sliding hole (336), and one end of the limiting sliding block (333) close to the limiting slide groove (332) is slidably connected in the limiting slide groove (332).

7. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 6, characterized in that: The upper end of the limiting sliding groove (332) is a threaded sliding groove, and the lower end of the limiting sliding groove (332) is a straight sliding groove.

8. The fixture for charging a furnace for growing lithium tantalate crystals according to claim 7, characterized in that: The sliding direction of the extrusion rod (321) is towards the central axis of the driving rotating rod (331).

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