Cadmium telluride crystal cutting device and cutting method thereof

Abstract

The invention discloses a cadmium telluride crystal cutting device and a cutting method thereof, and belongs to the technical field of cadmium telluride machining. A protective cover is pressed downwards, an upper pressing wheel is stressed to drive a rotating shaft to rotate through a deflection plate, and the rotating shaft drives a side pressing wheel to rotate synchronously through a deflection frame; the side pressing wheels limit the top and the side face of the cadmium telluride crystal, the cadmium telluride crystal is positioned, the protective cover is supported by the first spring, the protective cover can cover the cadmium telluride crystal, pressure is applied to the upper pressing wheel and the side pressing wheels, then the cadmium telluride crystal is always kept at the cutting center position after being clamped, and the cutting efficiency is improved. The cutting machine moves downwards in cooperation to cut cadmium telluride crystals, the protective cover separates a cutting area from the outside, impurities cannot be introduced into the protective cover, the dust suction cover is matched to adsorb dust in the protective cover, and dust particles can be filtered when the dust enters the filter box; and dust generated by cutting is prevented from splashing everywhere to influence the machining environment and damage personnel.

Description

Technical Field

[0001] The present invention belongs to the technical field of cadmium telluride processing, and in particular relates to a cadmium telluride crystal cutting device and a cutting method thereof. Background Art

[0002] Cadmium telluride crystals have a direct band gap, which gives them unique optical and electrical properties in the semiconductor field. They have good absorption capacity for visible light and show great potential in the application of optoelectronic devices such as photovoltaic cells. Due to the relatively stable crystal structure of cadmium telluride crystals, they also have a certain degree of brittleness, which places high demands on the precision of the cutting equipment and the stability of the cutting process. Traditional cutting technologies, such as mechanical cutting, usually use independent clamping mechanisms to clamp cadmium telluride crystals when cutting them. When changing crystals for processing, it is difficult to ensure that different cadmium telluride crystals always maintain the cutting center position after clamping, which can easily cause cutting deviations. In addition, frequent loading and unloading operations are complicated, and the dust generated by cutting splashes everywhere, affecting the processing environment. Summary of the Invention

[0003] To overcome the above-mentioned drawbacks, the present invention provides a cadmium telluride crystal cutting device and cutting method, which solve the problem that when cutting cadmium telluride crystals, an independent clamping mechanism is usually used to clamp the crystal. During the process of changing crystals for processing, it is difficult to ensure that different cadmium telluride crystals always maintain the cutting center position after clamping, which easily leads to cutting deviation. In addition, frequent loading and unloading operations are complicated, and dust generated by cutting is scattered everywhere, thereby affecting the processing environment.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cadmium telluride crystal cutting device, comprising a frame, a cutting seat fixedly connected to the middle part of the frame, a cutting groove provided in the middle part of the cutting seat, two electric hydraulic rods fixedly connected to the top of the inner wall of the frame, the bottom ends of the two electric hydraulic rods fixedly connected to a support assembly, a sliding seat is fixedly connected through the middle part of the support assembly, a cutting machine is installed inside the sliding seat, a protective cover is provided outside the cutting machine, a sliding hole is provided at the top of the protective cover, the sliding seat is slidably connected in the sliding hole, the four corners of the top of the protective cover are respectively fixedly connected to the bottom end of the support assembly, grooves are respectively provided on both sides of the bottom of the protective cover, a limiting assembly is fixedly installed in the groove, the bottom of the cutting machine is located above the limiting assembly, a dust suction assembly is passed through one side of the protective cover, and one side of the dust suction assembly is fixed to the support assembly.

[0005] As a further solution of the present invention: fixed frames are fixedly connected to both sides of the frame, and a plurality of guide rollers are rotatably installed on the inner wall of the fixed frame. The top of the guide roller is in the same plane as the top of the cutting seat, and the bottom of the frame is fixedly connected to a support base.

[0006] As a further solution of the present invention: the support assembly includes a support plate, the two sides of the top of the support plate are fixedly connected to the bottom ends of the two electric hydraulic rods, a mounting hole is opened in the middle of the support plate, the sliding seat is passed through and fixed in the mounting hole, and protruding strips are provided on both sides of the bottom of the sliding seat and the whole constitutes an inverted T-shaped structure.

[0007] As a further solution of the present invention: sliding rods are respectively passed through the four corners of the top of the support plate, the bottom ends of the sliding rods are fixed to the top of the protective cover, the protective cover is transparent, the top end of the sliding rod passes through the support plate and is fixed with a stop block, the stop block is overlapped on the support plate, the outer cover of the sliding rod is connected to a first spring, the top end of the first spring is fixed to the bottom of the support plate, and the bottom end of the first spring is fixed to the protective cover.

[0008] As a further solution of the present invention: the limiting assembly includes a rotating shaft, bearings are respectively sleeved on both sides of the outside of the rotating shaft, the bearings are clamped on one side of the inner wall of the groove, and a deflection plate and a deflection frame are fixedly connected to the outside of the rotating shaft. The deflection frame is U-shaped, and the side where the deflection frame and the deflection plate are away from each other are respectively rotatably installed with a side pressure wheel and an upper pressure wheel.

[0009] As a further solution of the present invention: the bottoms of the side pressure wheel and the upper pressure wheel are in the same plane, and the angle between the deflection plate and the deflection frame is ninety degrees, and two second springs are fixed on the side of the deflection plate close to the inside of the protective cover, and the top of the second spring is fixed to one side of the inner wall of the protective cover.

[0010] As a further solution of the present invention: the dust suction assembly includes a dust suction hood, which is installed through one side of the protective cover, a filter box is connected to the hose on the outside of the dust suction hood, the filter box is fixed on one side of the support plate, and the top of the filter box is connected to a connecting pipe.

[0011] A cutting method for a cadmium telluride crystal cutting device, the cutting method comprising the following steps: The cadmium telluride crystal is placed on the guide roller in the fixed frame. The guide roller is driven to rotate in the process of pushing the cadmium telluride crystal to move, thereby reducing the friction of the cadmium telluride crystal when it moves. After the cadmium telluride crystal moves to the cutting seat, the two electric hydraulic rods are controlled to extend and drive the support plate to move downward, and the cutting machine is controlled to work at the same time. The support plate drives the protective cover to move downward through four sliding rods, and the protective cover drives the two limit assemblies at the bottom to move downward, so that the upper pressure wheel in the limit assemblies contacts the edge of the top of the cadmium telluride crystal. As the protective cover continues to press down, the force on the upper pressure wheel will drive the rotating shaft to rotate inside the two bearings through the deflection plate, and the rotating shaft drives the side pressure wheels to rotate synchronously through the deflection frame until the side pressure wheels are in contact with the side of the cadmium telluride crystal. The top and side of the cadmium telluride crystal are limited by the side pressure wheels and the side pressure wheels on both sides of the protective cover, thereby playing a role in positioning the cadmium telluride crystal; As the support plate drives the protective cover to continue to press down through the sliding rod, the support plate will squeeze the first spring below. The first spring supports the protective cover so that the protective cover covers the cadmium telluride crystal and applies pressure to the upper pressure wheel and the side pressure wheel. The upper pressure wheel and the side pressure wheel push the cadmium telluride crystal to the center position of the cutting seat, so that the cadmium telluride crystal always maintains the cutting center position after clamping. At the same time, the support plate drives the cutting machine downward through the sliding seat and cuts the cadmium telluride crystal. The surface flatness of the cut cadmium telluride crystal is less than 1 μm / cm², and there is no edge chipping or cracking. The edge straightness deviation is ≤50 μm; and the roughness Ra is <20 nm; the dislocation density of the cadmium telluride crystal is < , without twins and stacking faults, so that the integrity of the crystal structure and the surface quality are guaranteed after cutting. The sliding seat slides in the sliding hole on the top of the protective cover to improve the stability of the cutting machine's mobile cutting work. With the setting of the cutting groove, the cutting machine cuts off the cadmium telluride crystal. During the cutting process, the protective cover separates the cutting area from the outside world, so that no impurities are introduced into the protective cover. The connecting pipe is connected to the external dust collection equipment, so that the dust collection cover absorbs the dust inside the protective cover. The dust enters the filter box to filter the dust particles, and the dust-free gas is discharged from the dust collection equipment through the connecting pipe. After the cutting work is completed, the two electric hydraulic rods are controlled to contract so that they drive the support plate to move upward. The support plate drives the protective cover and the cutting machine to move upward through the four sliding rods and the sliding seat. The setting of the block on the top of the sliding rod prevents the sliding rod from separating from the support plate. The protective cover drives the lower limit assembly to move upward. In the process of the side pressure wheel gradually moving away from the cadmium telluride crystal, the elastic force of the second spring supports the deflection plate, so that the deflection plate drives the side pressure wheel to rotate. At the same time, the deflection plate drives the deflection frame to rotate through the rotating shaft, so that the side pressure wheel and the side pressure wheel move away from the cadmium telluride crystal and deflect to the initial position, contacting the locked state of the cadmium telluride crystal. At this time, the cut cadmium telluride crystal is completely exposed to the outside, so that the cadmium telluride crystal can be taken and placed easily.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the two limiting assemblies at the bottom are driven to move downward by the protective cover, so that the upper pressure wheel in the limiting assembly contacts the edge of the top of the cadmium telluride crystal. As the protective cover continues to press downward, the upper pressure wheel is subjected to force and drives the rotating shaft to rotate inside the two bearings through the deflection plate. The rotating shaft drives the side pressure wheels to rotate synchronously through the deflection frame until the side pressure wheels fit the sides of the cadmium telluride crystal. The top and sides of the cadmium telluride crystal are limited by the side pressure wheels and the side pressure wheels on both sides of the protective cover, which plays a role in positioning the cadmium telluride crystal. As the support plate drives the protective cover to continue to press downward through the sliding rod, the support plate will squeeze the first spring below, and the second spring will press the second spring below. A spring supports the protective cover so that the protective cover covers the cadmium telluride crystal and applies pressure to the upper pressure wheel and the side pressure wheel. The upper pressure wheel and the side pressure wheel push the cadmium telluride crystal to the center position of the cutting seat, thereby ensuring that the cadmium telluride crystal always maintains the cutting center position after clamping. The cadmium telluride crystal is cut by cooperating with the cutting machine to move downward. The protective cover separates the cutting area from the outside world to prevent impurities from entering the protective cover. The connecting pipe is connected to an external dust collection device so that the dust collection cover absorbs dust inside the protective cover. The dust enters the filter box and filters the dust particles, preventing the dust generated by the cutting from flying around and affecting the processing environment and causing harm to personnel. 2. In the present invention, the two electric hydraulic rods are controlled to contract to drive the support plate to move upward, and the support plate drives the protective cover and the cutting machine to move upward through the four slide bars and the sliding seat. The setting of the block at the top of the slide bar prevents the slide bar from separating from the support plate, and the protective cover drives the lower limit assembly to move upward. In the process of the side pressure wheel gradually moving away from the cadmium telluride crystal, the elastic force of the second spring supports the deflection plate, so that the deflection plate drives the side pressure wheel to rotate, and at the same time, the deflection plate drives the deflection frame to rotate through the rotating shaft. The side pressure wheels are moved away from the CdTe crystal and deflected to the initial position, contacting the locked state of the CdTe crystal. At this time, the cut CdTe crystal is completely exposed to facilitate the removal and placement of the CdTe crystal, thereby improving the convenience of disassembling and assembling the CdTe crystal. The CdTe crystal is placed on the guide roller in the fixed frame. When the CdTe crystal is pushed to move, the guide roller is driven to rotate, thereby reducing the friction of the CdTe crystal when it moves, thereby facilitating the transfer of the CdTe crystal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic structural diagram of the connection between the frame and the cutting seat of the present invention; Figure 3 It is a schematic structural diagram of the side view of the present invention; Figure 4 This is a schematic diagram of the structure of the protective cover of the present invention when viewed from above; Figure 5 Schematic diagram of the structure of the limit assembly of the present invention; Figure 6 This is a schematic structural diagram of the support assembly and the sliding seat being separated according to the present invention; In the figure: 1. frame; 2. cutting seat; 3. cutting groove; 4. electric hydraulic rod; 5. support assembly; 501. support plate; 502. mounting hole; 503. slide bar; 504. block; 505. first spring; 6. sliding seat; 7. cutting machine; 8. protective cover; 9. groove; 10. limit assembly; 101. rotating shaft; 102. bearing; 103. deflection plate; 104. upper pressure wheel; 105. deflection frame; 106. side pressure wheel; 107. second spring; 11. sliding hole; 12. dust collection assembly; 121. dust collection cover; 122. filter box; 123. connecting pipe; 13. fixing frame; 14. guide roller; 15. support base. DETAILED DESCRIPTION

[0014] The technical solution of the present application will be further described in detail below in conjunction with specific implementation methods.

[0015] like Figure 1-6 As shown, the present invention provides a technical solution: a cadmium telluride crystal cutting device, comprising a frame 1, a support base 15 fixedly connected to the bottom of the frame 1, a cutting seat 2 fixedly connected to the middle of the frame 1, and a cutting groove 3 defined in the middle of the cutting seat 2; a fixing frame 13 fixedly connected to each side of the frame 1, a plurality of guide rollers 14 rotatably mounted on the inner wall of the fixing frame 13, the tops of the guide rollers 14 and the top of the cutting seat 2 being coplanar, with two sets of guide rollers 14 located on the left and right sides of the cutting seat 2, respectively. A cadmium telluride crystal is placed on the guide rollers 14, and pushing the cadmium telluride crystal to move it drives the guide rollers 14 to rotate, thereby reducing friction during the movement of the cadmium telluride crystal and facilitating its transfer.

[0016] Two electro-hydraulic rods 4 are fixedly connected to the top of the frame 1. The bottom ends of the two electro-hydraulic rods 4 are fixedly connected to a support assembly 5. The support assembly 5 includes a support plate 501. The two sides of the top of the support plate 501 are fixedly connected to the bottom ends of the two electro-hydraulic rods 4. A mounting hole 502 is defined in the middle of the support plate 501. A sliding seat 6 is fixedly inserted into the mounting hole 502. A cutter 7 is mounted inside the sliding seat 6, and the cross-sectional shape of the sliding seat 6 is inverted T-shaped. A protective cover 8 is provided outside the cutter 7. The top of the protective cover 8 has a sliding hole 11 defined therein. The sliding seat 6 is slidably connected to the sliding hole 11. The support plate 501 drives the cutter 7 downward through the sliding seat 6 to cut the cadmium telluride crystal. The sliding seat 6 slides in the sliding hole 11 at the top of the protective cover 8. Protruding bars are provided on both sides of the bottom of the sliding seat 6, giving the sliding seat 6 an inverted T-shaped structure. The inverted T-shaped sliding seat 6 will not fall out of the sliding hole 11.

[0017] The four corners of the top of the support plate 501 are respectively penetrated by sliding rods 503, and the bottom ends of the sliding rods 503 are fixed to the top of the protective cover 8. The protective cover 8 is transparent in design. The top end of the sliding rod 503 passes through the support plate 501 and is fixed with a stopper 504. The stopper 504 overlaps the support plate 501. The setting of the stopper 504 at the top of the sliding rod 503 prevents the sliding rod 503 from separating from the support plate 501; a first spring 505 is connected to the outer sleeve of the sliding rod 503, and the top end of the first spring 505 is fixed to the bottom of the support plate 501, and the bottom end of the first spring 505 is fixed to the protective cover 8. The support plate 501 drives the protective cover 8 to be continuously pressed down through the slide rod 503. The support plate 501 will squeeze the first spring 505 below. The first spring 505 supports the protective cover 8 so that the protective cover 8 covers the cadmium telluride crystal and effectively blocks the dust generated by cutting. At the same time, the protective cover 8 separates the cutting area from the outside world, so that impurities will not be introduced into the protective cover 8.

[0018] The bottom of the protective cover 8 is provided with grooves 9 on both sides, and a limit assembly 10 is fixedly installed in the groove 9. The bottom of the cutting machine 7 is located above the limit assembly 10. The limit assembly 10 includes a rotating shaft 101. The two sides of the rotating shaft 101 are respectively sleeved with bearings 102. The bearing 102 is clamped on one side of the inner wall of the groove 9. The rotating shaft 101 is fixedly connected to a deflection plate 103 and a deflection frame 105 and is located on both sides of the rotating shaft 101. The deflection frame 105 is U-shaped, and the side of the deflection frame 105 and the deflection plate 103 away from each other are respectively rotatably installed with a side pressure wheel 106 and an upper pressure wheel 104. The side pressure wheel 106 and the upper pressure wheel 104 are respectively located outside and inside the protective cover 8. The bottoms of the side pressure wheel 106 and the upper pressure wheel 104 are in the same plane, and the angle between the deflection plate 103 and the deflection frame 105 is ninety degrees. Two second springs 107 are fixed to one side of the deflection plate 103 close to the inside of the protective cover 8 , and the top ends of the second springs 107 are fixed to one side of the inner wall of the protective cover 8 .

[0019] When the protective cover 8 covers the cadmium telluride crystal, the upper pressure wheel 104 and the side pressure wheels 106 apply pressure, and the upper pressure wheel 104 presses the top of the crystal. As the protective cover 8 continues to press down, the upper pressure wheel 104 is forced to drive the rotating shaft 101 to rotate inside the two bearings 102 through the deflection plate 103, compressing the second spring 107. The rotating shaft 101 then drives the side pressure wheels 106 to rotate synchronously through the deflection frame 105 until the side pressure wheels 106 are in contact with the side of the cadmium telluride crystal. The top and side of the cadmium telluride crystal are limited by the side pressure wheels 106 and the side pressure wheels 106 on both sides of the protective cover 8. The protective cover 8 then continues to press down until it completely covers the crystal and the upper pressure wheel 104 and the side pressure wheel 106 are inside it. During this process, the upper pressure wheel 104 and the side pressure wheel 106 push the cadmium telluride crystal to the center position of the cutting seat 2, thereby ensuring that the cadmium telluride crystal always maintains the cutting center position after clamping.

[0020] After the operation is completed, as the upper pressure wheel 104 gradually moves away from the cadmium telluride crystal, the deflection plate 103 is supported and reset by the elastic force of the second spring 107, so that the deflection plate 103 drives the upper pressure wheel 104 to rotate. At the same time, the deflection plate 103 drives the deflection frame 105 to rotate through the rotating shaft 101, so that the upper pressure wheel 104 and the side pressure wheel 106 move away from the cadmium telluride crystal and deflect to the initial position, so as to facilitate the next clamping of the cadmium telluride crystal.

[0021] One side of the protective cover 8 is connected to a dust collection component 12, and the dust collection component 12 includes a dust collection hood 121. The dust collection hood 121 is installed on one side of the protective cover 8. The hose on the outside of the dust collection hood 121 is connected to a filter box 122. The filter box 122 is fixed on one side of the support plate 501. The top of the filter box 122 is connected to a connecting pipe 123. The connecting pipe 123 is connected to an external dust collection device, so that the dust collection hood 121 absorbs dust inside the protective cover 8. The dust entering the filter box 122 will filter the dust particles, and the dust-free gas is discharged from the dust collection device through the connecting pipe 123.

[0022] A cutting method for a cadmium telluride crystal cutting device, the cutting method comprising the following steps: A cadmium telluride crystal is placed on the guide roller 14 in the fixed frame 13. When the cadmium telluride crystal is pushed to move, the guide roller 14 is driven to rotate, thereby reducing the friction force during the movement of the cadmium telluride crystal. After the cadmium telluride crystal moves to the cutting seat 2, the two electric hydraulic rods 4 are controlled to extend and drive the support plate 501 to move downward, while the cutting machine 7 is controlled to work.

[0023] The support plate 501 drives the protective cover 8 downward through the four sliding rods 503, and the protective cover 8 drives the two limiting assemblies 10 at the bottom to move downward, so that the upper pressure wheel 104 in the limiting assembly 10 contacts the edge of the top of the cadmium telluride crystal; as the protective cover 8 continues to press downward, the upper pressure wheel 104 is forced to drive the rotating shaft 101 to rotate inside the two bearings 102 through the deflection plate 103, compressing the second spring 107, and the rotating shaft 101 drives the side pressure wheels 106 to rotate synchronously through the deflection frame 105 until the side pressure wheels 106 are in contact with the side of the cadmium telluride crystal. The top and side of the cadmium telluride crystal are limited by the side pressure wheels 106 on both sides of the protective cover 8, thereby positioning the cadmium telluride crystal; As the support plate 501 drives the protective cover 8 to continue to press downward through the slide bar 503, the support plate 501 will squeeze the first spring 505 below. The first spring 505 supports the protective cover 8 so that the protective cover 8 covers the cadmium telluride crystal and applies pressure to the upper pressure wheel 104 and the side pressure wheel 106. The upper pressure wheel 104 and the side pressure wheel 106 push the cadmium telluride crystal to the center position of the cutting seat 2, thereby ensuring that the cadmium telluride crystal always maintains the cutting center position after clamping. At the same time, the support plate 501 drives the cutting machine 7 downward through the sliding seat 6 and cuts the cadmium telluride crystal. The surface flatness of the cut cadmium telluride crystal is less than 1 μm / cm², and there is no edge chipping or cracking. The edge straightness deviation is ≤50 μm; and the roughness Ra is <20 nm; the dislocation density of the cadmium telluride crystal is < , without twins and stacking faults, so that the integrity of the crystal structure and the surface quality are guaranteed after cutting. The sliding seat 6 slides in the sliding hole 11 on the top of the protective cover 8, thereby improving the stability of the mobile cutting operation of the cutting machine 7. In conjunction with the setting of the cutting groove 3, the cutting machine 7 cuts off the cadmium telluride crystal. During the cutting process, the protective cover 8 separates the cutting area from the outside world, so that no impurities are introduced into the protective cover 8. The connecting pipe 123 is connected to an external dust collection device, so that the dust collection cover 121 absorbs the dust inside the protective cover 8. The dust enters the filter box 122 to filter the dust particles, and the dust-free gas is discharged from the dust collection device through the connecting pipe 123; After the cutting work is completed, the two electric hydraulic rods 4 are controlled to retract so that they drive the support plate 501 to move upward. The support plate 501 drives the protective cover 8 and the cutting machine 7 to move upward through the four sliding rods 503 and the sliding seat 6. The setting of the stop block 504 at the top of the sliding rod 503 prevents the sliding rod 503 from separating from the support plate 501, and the protective cover 8 drives the limiting component 10 below to move upward.

[0024] As the upper pressure wheel 104 gradually moves away from the cadmium telluride crystal, the deflection plate 103 is supported by the elastic force of the second spring 107, so that the deflection plate 103 drives the side pressure wheel 106 to rotate. At the same time, the deflection plate 103 drives the deflection frame 105 to rotate through the rotating shaft 101, so that the side pressure wheel 106 and the side pressure wheel 106 move away from the cadmium telluride crystal and deflect to the initial position, contacting the locked state of the cadmium telluride crystal. At this time, the cut cadmium telluride crystal is completely exposed to the outside, so that the cadmium telluride crystal can be taken and placed easily.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

Claims

1. A cadmium telluride crystal cutting device, comprising a frame (1), characterized in that: The middle of the frame (1) is fixedly connected to a cutting seat (2), the middle of the cutting seat (2) is provided with a cutting groove (3), the top of the inner wall of the frame (1) is fixedly connected to two electric hydraulic rods (4), the bottom ends of the two electric hydraulic rods (4) are fixedly connected to a support assembly (5), the middle of the support assembly (5) is passed through and fixedly connected to a sliding seat (6), a cutting machine (7) is installed inside the sliding seat (6), a protective cover (8) is provided outside the cutting machine (7), and a sliding hole ( 11), the sliding seat (6) is connected to the sliding hole (11) by sliding, the four corners of the top of the protective cover (8) are fixedly connected to the bottom of the support assembly (5), the two sides of the bottom of the protective cover (8) are respectively provided with grooves (9), the limit assembly (10) is fixedly installed in the groove (9), the bottom of the cutting machine (7) is located above the limit assembly (10), one side of the protective cover (8) is connected to the dust collection assembly (12), and one side of the dust collection assembly (12) is fixed to the support assembly (5).

2. The cadmium telluride crystal cutting device according to claim 1, characterized in that: The two sides of the frame (1) are respectively fixedly connected with fixed frames (13), and the inner wall of the fixed frame (13) is rotatably mounted with a plurality of guide rollers (14), the top of the guide rollers (14) and the top of the cutting seat (2) are in the same plane, and the bottom of the frame (1) is fixedly connected with a support base (15).

3. The cadmium telluride crystal cutting device according to claim 1, characterized in that: The support assembly (5) comprises a support plate (501), the two sides of the top of the support plate (501) are fixedly connected to the bottom ends of the two electric hydraulic rods (4), a mounting hole (502) is provided in the middle of the support plate (501), the sliding seat (6) is passed through and fixed in the mounting hole (502), and protruding strips are provided on both sides of the bottom of the sliding seat (6), and the whole constitutes an inverted T-shaped structure.

4. The cadmium telluride crystal cutting device according to claim 3, characterized in that: Slide rods (503) are respectively passed through the four corners of the top of the support plate (501), and the bottom end of the slide rod (503) is fixed to the top of the protective cover (8). The protective cover (8) is designed to be transparent. The top end of the slide rod (503) passes through the support plate (501) and is fixed with a stopper (504). The stopper (504) is overlapped on the support plate (501). The outer cover of the slide rod (503) is connected to a first spring (505). The top end of the first spring (505) is fixed to the bottom of the support plate (501), and the bottom end of the first spring (505) is fixed to the protective cover (8).

5. The cadmium telluride crystal cutting device according to claim 1, characterized in that: The limiting assembly (10) includes a rotating shaft (101), and bearings (102) are respectively sleeved on both sides of the rotating shaft (101), and the bearings (102) are clamped on one side of the inner wall of the groove (9). The rotating shaft (101) is fixedly connected to a deflection plate (103) and a deflection frame (105). The deflection frame (105) is U-shaped, and a side pressure wheel (106) and an upper pressure wheel (104) are rotatably installed on the side where the deflection frame (105) and the deflection plate (103) are away from each other.

6. The cadmium telluride crystal cutting device according to claim 5, characterized in that: The bottoms of the side pressure wheel (106) and the upper pressure wheel (104) are in the same plane, and the angle between the deflection plate (103) and the deflection frame (105) is ninety degrees. Two second springs (107) are fixed on one side of the deflection plate (103) close to the inside of the protective cover (8), and the top of the second spring (107) is fixed to one side of the inner wall of the protective cover (8).

7. The cadmium telluride crystal cutting device according to claim 3, characterized in that: The dust collection assembly (12) comprises a dust collection hood (121), the dust collection hood (121) being installed through one side of the protective cover (8), a filter box (122) being connected to a hose on the outside of the dust collection hood (121), the filter box (122) being fixed to one side of the support plate (501), and a connecting pipe (123) being connected to the top of the filter box (122).

8. A cutting method for a cadmium telluride crystal cutting device, according to any one of claims 1 to 7, characterized in that: The cutting method comprises the following steps: The cadmium telluride crystal is placed on the guide roller (14) in the fixed frame (13). When the cadmium telluride crystal is pushed to move, the guide roller (14) is driven to rotate, thereby reducing the friction force when the cadmium telluride crystal moves. After the cadmium telluride crystal moves to the cutting seat (2), the two electric hydraulic rods (4) are controlled to work to extend and drive the support plate (501) to move downward. At the same time, the cutting machine (7) is controlled to work. The support plate (501) drives the protective cover (8) to move downward through the four sliding rods (503). The protective cover (8) drives the two limit assemblies (10) at the bottom to move downward, so that the limit assembly (1 0) contacts the edge of the top of the cadmium telluride crystal. As the protective cover (8) continues to press downward, the upper pressure wheel (104) is subjected to force and drives the rotating shaft (101) to rotate inside the two bearings (102) through the deflection plate (103). The rotating shaft (101) drives the side pressure wheels (106) to rotate synchronously through the deflection frame (105) until the side pressure wheels (106) fit the side of the cadmium telluride crystal. The top and side of the cadmium telluride crystal are limited by the side pressure wheels (106) and the side pressure wheels (106) on both sides of the protective cover (8), thereby playing a role in positioning the cadmium telluride crystal. As the support plate (501) drives the protective cover (8) to continue to press downward through the slide bar (503), the support plate (501) will squeeze the first spring (505) below, and the first spring (505) supports the protective cover (8), so that the protective cover (8) will cover the cadmium telluride crystal, and exert pressure on the upper pressure wheel (104) and the side pressure wheel (106), and the upper pressure wheel (104) and the side pressure wheel (106) push the cadmium telluride crystal to move to the center position of the cutting seat (2), so that the cadmium telluride crystal always maintains the cutting center position after clamping, and at the same time, the support plate (501) drives the cutting machine (7) to move downward through the slide seat (6), and cuts the cadmium telluride crystal, and the surface flatness of the cut cadmium telluride crystal is less than 1 μm / cm², and there is no edge collapse or crack, and the edge straightness deviation is ≤50 μm; and the roughness Ra is <20 nm; the dislocation density of the cadmium telluride crystal is < , without twins and stacking faults, so that the integrity of the crystal structure and the surface quality are guaranteed after cutting, the sliding seat (6) slides in the sliding hole (11) on the top of the protective cover (8), thereby improving the stability of the cutting machine (7) in the mobile cutting operation, and in conjunction with the setting of the cutting groove (3), the cutting machine (7) cuts off the cadmium telluride crystal. During the cutting process, the protective cover (8) separates the cutting area from the outside world, so that impurities are not introduced into the inside of the protective cover (8). The connecting pipe (123) is connected to the external dust collection equipment, so that the dust collection cover (121) absorbs the dust inside the protective cover (8), and the dust enters the inside of the filter box (122) to filter the dust particles, and the gas without dust is discharged from the dust collection equipment through the connecting pipe (123); After the cutting work is completed, the two electric hydraulic rods (4) are controlled to retract so as to drive the support plate (501) to move upward. The support plate (501) drives the protective cover (8) and the cutting machine (7) to move upward through the four slide bars (503) and the sliding seat (6). The setting of the top stopper (504) of the slide bar (503) prevents the slide bar (503) from separating from the support plate (501). The protective cover (8) drives the lower limit assembly (10) to move upward, and the side pressure wheel (106) gradually moves away from the cadmium telluride crystal. During the process, the deflection plate (103) is supported by the elastic force of the second spring (107), so that the deflection plate (103) drives the side pressure wheel (106) to rotate, and at the same time, the deflection plate (103) drives the deflection frame (105) to rotate through the rotating shaft (101), so that the side pressure wheel (106) and the side pressure wheel (106) are away from the cadmium telluride crystal and deflected to the initial position, contacting the locking state of the cadmium telluride crystal. At this time, the cut cadmium telluride crystal is completely exposed to the outside, so that the cadmium telluride crystal can be taken and placed easily.

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