Measuring scale for measuring single crystal interface depth

Abstract

The utility model provides a measuring scale for measuring single crystal interface depth, which comprises an auxiliary scale, a measuring scale and a clamping mechanism, a measuring chute perpendicular to the top surface of the auxiliary scale is arranged in the auxiliary scale, the graduated scale is arranged in the measuring chute in a sliding manner, the top end of the graduated scale extends out of the measuring chute, the clamping mechanism is movably arranged in the auxiliary scale, and the measuring scale is arranged in the auxiliary scale. The clamp is used for clamping or loosening the graduated scale. According to the measuring scale provided by the utility model, the graduated scale is always perpendicular to the top surface of the auxiliary scale, so that measurement errors caused by inclination and loosening of the graduated scale due to insufficient measurement experience or misoperation can be avoided, and the accuracy of a measurement result is improved; by means of the cooperation of the auxiliary ruler and the clamping mechanism, a person does not need to hold the graduated scale right below the single crystal during measurement, and the safety accident that single crystal chippings fall down and hurt people is avoided; and through the diversified structural design of the clamping mechanism, the use convenience of the measuring scale is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal production, in particular to a measuring ruler for measuring the depth of a single crystal interface. Background Art

[0002] During the single crystal growth process, it is necessary to always pay attention to the temperature gradient in the single crystal furnace. After the growth of the first single crystal is completed, the interface depth when it is broken can directly reflect the temperature gradient in the furnace, which is of great reference significance for the production of subsequent single crystals.

[0003] The traditional method for measuring the interface depth of a single crystal is: Figure 1 , use a horizontal and vertical ruler, insert the vertical ruler into the upper concave arc surface at the bottom of the single crystal after the bud is broken, use the horizontal ruler to press against the bottom edge of the single crystal, find the deepest part of the upper concave arc surface, pinch the horizontal and vertical rulers with your hands to fix their relative positions, move them out from under the single crystal, and read the vertical ruler scale at the intersection with the horizontal ruler.

[0004] However, this measurement method is limited by the experience of the measurer, and the coordination between the horizontal and vertical rulers affects the accuracy of the measurement results. For example, a tilted vertical ruler during measurement, or loose rotation of the horizontal and vertical rulers during transfer, will lead to inaccurate readings. In addition, during the measurement process, it is necessary to hold the vertical ruler directly below the single crystal with one's hand, which poses certain safety risks, such as cracking of the single crystal structure, and falling debris with still high temperature that may injure people. Utility Model Content

[0005] The purpose of the utility model is to provide a measuring ruler for measuring the depth of a single crystal interface, so as to solve the above-mentioned problems.

[0006] The technical solution of the utility model includes: a measuring ruler for measuring the depth of a single crystal interface, comprising:

[0007] An auxiliary ruler, wherein the auxiliary ruler is provided with a measuring slot perpendicular to its top surface;

[0008] a graduated ruler slidably disposed in the measuring chute, with a top end extending out of the measuring chute;

[0009] A clamping mechanism is movably arranged in the auxiliary ruler and is used to clamp or loosen the scale.

[0010] Preferably, the clamping mechanism includes several groups of clamping arms and driving members, the clamping arms are located on the sides of the scale, and the driving members are connected to the clamping arms to drive the clamping arms to move closer to or away from the scale.

[0011] Preferably, the auxiliary ruler is provided with a clamp arm slot connected to the measuring slot, the clamp arm is slidably arranged in the clamp arm slot, the outer surface of the clamp arm is provided with a transmission rack extending in the same direction as the clamp arm slot, and the transmission rack is connected to the driving member through a transmission gear meshing therewith.

[0012] Preferably, a limiting through hole is provided on the auxiliary ruler, and the limiting through hole is communicated with the clamp arm slide groove. The clamp arm is provided with a telescopic clamping piece adapted to the limiting through hole, and the telescopic clamping piece abuts against the inner wall of the clamp arm slide groove or clamps the limiting through hole.

[0013] Preferably, the clamp arm is provided with a limiting slide groove recessed in its surface, and the telescopic clamping member includes a compression spring and a limiting block, and the limiting block is slidably arranged in the limiting slide groove and fixedly connected to the inner wall of the limiting slide groove by the compression spring.

[0014] Preferably, a reset button is provided on the outer wall of the auxiliary ruler, and the reset button includes a connecting rod and a jump pin, the top end of the jump pin is connected to the outer wall of the auxiliary ruler through the connecting rod, and the bottom end extends into the limiting through hole.

[0015] Preferably, the clamping arm comprises two arm segments connected by a stiffening spring, and the telescopic clamping member is located on the arm segment close to the driving member.

[0016] Preferably, the auxiliary ruler is provided with a driving slot with an opening at the top, the driving member is a rod slidably arranged in the driving slot, the surface of the driving member is provided with a driving rack extending in the same direction as the driving slot, and the driving rack is engaged with the transmission gear.

[0017] Preferably, an elastic reset member is provided in the driving chute, and the bottom end of the driving member is fixedly connected to the elastic reset member.

[0018] Preferably, an elastic support member is provided in the measuring chute, and the bottom end of the scale is connected to the measuring chute via the elastic support member.

[0019] The beneficial effects of the utility model are as follows: the scale in the measuring ruler is always perpendicular to the top surface of the auxiliary ruler, which can avoid measurement errors caused by the scale being skewed or loose due to insufficient measurement experience or operational errors, thereby improving the accuracy of the measurement results; and with the help of the cooperation between the auxiliary ruler and the clamping mechanism, the hands do not need to be directly below the single crystal to hold the scale during measurement, avoiding safety accidents such as falling single crystal debris and injuring people; and the convenience of using the measuring ruler is improved by the diverse structural design of the clamping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of measurement operation in the prior art;

[0021] Figure 2 This is a front view of an embodiment of the utility model;

[0022] Figure 3 It is a top view of an embodiment of the utility model;

[0023] Figure 4 It is a front cross-sectional view of an embodiment of the utility model;

[0024] Figure 5 This utility model embodiment is attached Figure 4 A magnified view of the structure at center A;

[0025] Figure 6 It is a front sectional view of the clamping arm in an embodiment of the present utility model.

[0026] In the picture:

[0027] 10. Auxiliary ruler; 11. Measuring slide; 12. Clamping arm slide; 13. Limiting through hole; 14. Driving slide;

[0028] 20. Ruler;

[0029] 30. Clamping mechanism; 31. Clamping arm; 32. Driving member; 33. Transmission rack; 34. Transmission gear; 35. Driving rack; 36. Elastic reset member; 37. Limiting slide; 38. Arm section; 39. Stiffening spring;

[0030] 40. Elastic support member;

[0031] 50. Telescopic connector; 51. Compression spring; 52. Limiting block;

[0032] 60. Reset button; 61. Connecting rod; 62. Jump stitch. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] Example 1

[0037] Reference Attachment Figure 2-6 A measuring ruler for measuring the depth of a single crystal interface includes: an auxiliary ruler 10, a scale 20 and a clamping mechanism 30. The auxiliary ruler 10 is provided with a measuring slot 11 perpendicular to its top surface and clamping arm slots 12 located on both sides of the measuring slot 11, and the clamping arm slots 12 are connected to the measuring slot 11; the scale 20 extends in the same direction as the measuring slot 11 and is slidably disposed in the measuring slot 11, with its top end extending out of the measuring slot 11; the clamping mechanism 30 includes a clamping arm 31 slidably disposed in the clamping arm slot 12 and a driving member 32 connected to the clamping arm 31, the driving member 32 being used to drive the clamping arm 31 to slide in the clamping arm slot 12 and approach or move away from the scale 20, thereby clamping or loosening the scale 20.

[0038] In this embodiment, the scale 20 and the measuring groove 11 are in sliding contact, and the contact surface between the two is made of a material or structure with a large friction coefficient (for example, provided with surface bumps, etc.). On the one hand, it is ensured that the scale 20 is always perpendicular to the top surface of the auxiliary ruler 10 during the sliding process. On the other hand, due to the large friction between the scale 20 and the measuring groove 11, the scale 20 will not slide unless a push or pull force is applied to the scale 20. The scale 20 is then pulled out of the measuring slot 11 by hand and the reading on the scale 20 is read.

[0039] The auxiliary ruler 10 can be configured with a sufficient length, and the driving member 32 can be an instrument or part with a telescopic function (this is a prior art and will not be described in detail). Its trigger structure can be set at both ends of the auxiliary ruler 10 to ensure that during the measurement process, only part of the structure of the auxiliary ruler 10 and the scale 20 are located directly below the single crystal. The operating parts for manually pushing the auxiliary ruler 10 and triggering the driving member 32 are both located outside the single crystal, avoiding damage to the hands of the measurer caused by falling single crystal debris, thereby ensuring the safety of the measurement process.

[0040] Example 2

[0041] The difference from Example 1 is that in this embodiment, the scale 20 and the measuring chute 11 are in sliding contact, but the contact surface between the two is made of a material with a small friction coefficient or a flat structure, and an elastic support member 40 (a spring can be optionally used) is provided on the inner bottom surface of the measuring chute 11, and the bottom end of the scale 20 is connected to the measuring chute 11 through the elastic support member 40. The advantages of such a setting are: (1) by pre-designing and configuring the length of the scale 20 and the measuring slot 11, the material selection of the elastic support member 40, etc., the elastic support member 40 is in a natural state, and the top end of the scale 20 extends sufficiently far outside the measuring slot 11, thereby avoiding the need to manually pull the scale 20 out of the measuring slot 11 before each measurement, thereby improving measurement efficiency; (2) since the center depth of the concave arc surface at the bottom of the single crystal is the most accurate measurement value, the upward extension of the scale 20 usually requires visual control by the measurement personnel. For measurement personnel with sufficient experience, the measurement ruler provided in Example 1 can be used for more accurate and rapid measurement. However, for measurement personnel with less experience, if the upward extension of the scale 20 is not the center of the concave arc surface at the initial moment, the measurement efficiency will be improved. If the auxiliary ruler 10 is in the correct position and its top surface abuts the edge of the upper concave arc surface of the single crystal, and the measurer wants to move the scale 20 to the center of the upper concave arc surface of the single crystal for accurate measurement, the only option is to move the measuring ruler out, re-extend the scale 20 to a sufficient length, and re-measure. This will greatly reduce the measurement efficiency and may lead to the vicious cycle of "inaccurate-remeasurement" mentioned above many times. However, the present embodiment can avoid the above-mentioned problem. If the first upward extension position of the scale 20 is inaccurate, the position of the measuring ruler can be directly translated. Under the action of the elastic support member 40, the top end of the scale 20 will always abut the upper concave arc surface until the measurer believes that the top end of the scale 20 abuts the center of the upper concave arc surface. Then, the clamping mechanism 30 can be activated to clamp the scale 20 and perform operations such as reading.

[0042] Example 3

[0043] The difference from Example 2 is that in this embodiment, the outer surface of the clamping arm 31 is provided with a transmission rack 33 extending in the same direction as the clamping arm slide 12, and the transmission rack 33 is connected to the driving member 32 through a transmission gear 34 engaged therewith. The driving member 32 can be a turntable, a rotating rod or a motor that directly drives the transmission gear 34 to rotate, or it can be a rod engaged with the transmission gear 34. During implementation, a driving slide 14 with a top opening is provided near the two ends of the auxiliary ruler 10, and the driving member 32 is slidably set in the driving slide 14. A driving rack 35 extending in the same direction as the driving slide 14 is provided on the outer surface of the driving member 32, and the driving rack 35 is engaged with the transmission gear 34.

[0044] Compared with instruments, parts, or turntables, rotating rods and motors with telescopic functions, configuring the driving member 32 as a rod with the auxiliary ruler 10 extending from the top and the driving rack 35 on the outside makes it easier for the measurement personnel to trigger the action of the driving member 32. That is, they only need to press the driving member 32 downward to drive the transmission gear 34 to rotate, thereby driving the transmission rack 33 to move, and realizing the sliding of the clamping arm 31.

[0045] Example 4

[0046] The difference from Example 3 is that, in this embodiment, an elastic return member 36 (a spring can be optionally used) is provided in the driving slide groove 14, and the bottom end of the driving member 32 is fixedly connected to the elastic return member 36; a limiting through hole 13 is provided on the auxiliary ruler 10, and the limiting through hole 13 can be provided, for example, at the top, bottom and side of the auxiliary ruler 10, and the limiting through hole 13 is communicated with the clamping arm slide groove 12, and a telescopic clamping member 50 adapted to the limiting through hole 13 is provided on the clamping arm 31, and the telescopic clamping member 50 can be configured, for example, to include a compression spring 51 and a limiting block 52. During implementation, a limiting slide groove 37 recessed in the surface of the clamping arm 31 is provided, the compression spring 51 is fixed in the limiting slide groove 37, the limiting block 52 is slidably provided in the limiting slide groove 37, and fixedly connected to the compression spring 51.

[0047] When the clamping arm 31 is away from the scale 20, the limit block 52 abuts against the inner wall of the clamping arm slot 12, and the compression spring 51 is in a compressed state; when the scale 20 needs to be clamped, the driving member 32 is pressed down to drive the clamping arm 31 to slide toward the scale 20. When the clamping arm 31 slides to the position against the scale 20, the telescopic clamping member 50 just corresponds to the position of the limit through hole 13, and the limit block 52 and the compression spring 51 lose the squeeze of the clamping arm slot 12, so that the compression spring 51 is restored to its original state. When the measuring tool 31 is moved back to the free state, the limit block 52 is driven to be stuck in the limit hole 13, so that the clamping arm 31 cannot move. At this time, the elastic reset member 36 is compressed. When a measurement is completed, the limit block 52 can be pressed by an external auxiliary tool or a fingernail to disengage it from the limit hole 13. At this time, the elastic reset member 36 is restored to the free state, driving the driving member 32 to move upward, thereby driving the clamping arm 31 away from and loosening the scale 20, so that the driving member 32, the clamping arm 31 and the scale 20 are all reset.

[0048] The benefit of such an arrangement is that, although the configuration of Example 3 is convenient for a person to press and trigger the driving member 32 at any time, the self-locking property of the connection between the transmission gear 34 and the driving rack 35 and the transmission rack 33 is not strong enough. After the clamping arm 31 clamps the scale 20, it is necessary to continuously press the driving member 32 when transferring the measuring ruler to ensure that the clamping arm 31 does not loosen. Although the operation is not difficult and has sufficient feasibility, the operation is relatively laborious. The telescopic clamping member 50 configured in this embodiment can limit the clamping arm 31 to the position of clamping the scale 20, prevent it from loosening, and free up both hands when transferring the measuring ruler.

[0049] Example 5

[0050] The difference from Example 4 is that this embodiment has a reset button 60 on the outer wall of the auxiliary ruler 10. The reset button 60 includes a connecting rod 61 and a jump pin 62. The top of the jump pin 62 is connected to the outer wall of the auxiliary ruler 10 via the connecting rod 61, and the bottom end extends into the limit hole 13. By pressing the connecting rod 61, the jump pin 62 presses against the limit block 52 until it disengages from the limit hole 13, reducing the need for external auxiliary tools and improving ease of use.

[0051] Example 6

[0052] The difference from Examples 4 and 5 lies in that the clamping arm 31 of this embodiment includes two arm segments 38 connected by a stiffening spring 39, and the telescopic clamping member 50 is located on the arm segment 38 proximal to the driver 32. When the scale 20 needs to be clamped, the driver 32 is used to move the entire clamping arm 31 toward the scale 20 and against the scale 20. By presetting the length of the arm segments 38, the length of the stiffening spring 39, the position of the telescopic clamping member 50, and the position of the limiting through-hole 13, when the telescopic clamping member 50 is engaged with the limiting through-hole 13, the stiffening spring 39 is in a compressed state. Although the arm segments 38 on both sides are subject to elastic force, the arm segment 38 proximal to the driver 32 is restrained by the telescopic clamping member 50 and cannot move. The arm segment 38 proximal to the scale 20 is pressed against the scale 20 by the stiffening spring 39, further enhancing the limiting effect on the scale 20, preventing slippage and inaccurate readings, and improving measurement accuracy. Compared with the prior art, the beneficial effects of the present invention are as follows: the scale 20 in the present measuring ruler is always perpendicular to the top surface of the auxiliary ruler 10, which can avoid measurement errors caused by the scale 20 being skewed or loose due to insufficient measurement experience or operational errors, thereby improving the accuracy of the measurement results; and with the help of the cooperation between the auxiliary ruler 10 and the clamping mechanism 30, the human hand does not need to be directly below the single crystal to hold the scale 20 during measurement, avoiding safety accidents such as falling single crystal debris and injuring people; and the diversified structural design of the clamping mechanism 30 improves the convenience of use of the present measuring ruler.

[0053] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A measuring ruler for measuring the depth of a single crystal interface, characterized in that: include: An auxiliary ruler, wherein the auxiliary ruler is provided with a measuring slot perpendicular to the top surface thereof; A scale, wherein the scale is slidably disposed in the measuring slot, and a top end thereof extends out of the measuring slot; A clamping mechanism is movably arranged in the auxiliary ruler and is used for clamping or loosening the scale.

2. The measuring ruler for measuring the single crystal interface depth according to claim 1, characterized in that: The clamping mechanism comprises a plurality of clamping arms and a driving member, wherein the clamping arms are located at the side of the scale, and the driving member is connected to the clamping arms and is used to drive the clamping arms to approach or move away from the scale.

3. The measuring ruler for measuring the single crystal interface depth according to claim 2, characterized in that: The auxiliary ruler is provided with a clamp arm slot connected to the measuring slot, the clamp arm is slidably arranged in the clamp arm slot, the outer surface of the clamp arm is provided with a transmission rack extending in the same direction as the clamp arm slot, and the transmission rack is connected to the driving member through a transmission gear meshing therewith.

4. The measuring ruler for measuring the single crystal interface depth according to claim 3, characterized in that: The auxiliary ruler is provided with a limiting through hole, the limiting through hole is communicated with the clamp arm sliding slot, the clamp arm is provided with a telescopic clamping piece adapted to the limiting through hole, the telescopic clamping piece abuts against the inner wall of the clamp arm sliding slot or clamps the limiting through hole.

5. The measuring ruler for measuring the single crystal interface depth according to claim 4, characterized in that: The clamp arm is provided with a limiting slide groove recessed in its surface, and the telescopic clamping member includes a compression spring and a limiting block. The limiting block is slidably arranged in the limiting slide groove and is fixedly connected to the inner wall of the limiting slide groove through the compression spring.

6. The measuring ruler for measuring the single crystal interface depth according to claim 5, characterized in that: A reset button is provided on the outer wall of the auxiliary ruler. The reset button includes a connecting rod and a jump pin. The top end of the jump pin is connected to the outer wall of the auxiliary ruler through the connecting rod, and the bottom end extends into the limit through hole.

7. The measuring ruler for measuring the single crystal interface depth according to any one of claims 4 to 6, characterized in that: The clamp arm comprises two arm sections connected by a stiffening spring, and the telescopic clamping member is located on the arm section close to the driving member.

8. The measuring ruler for measuring the single crystal interface depth according to claim 7, characterized in that: The auxiliary ruler is provided with a driving slot with an opening at the top, the driving member is a rod slidably arranged in the driving slot, the outer surface of the driving member is provided with a driving rack extending in the same direction as the driving slot, and the driving rack is meshed with the transmission gear.

9. The measuring ruler for measuring the single crystal interface depth according to claim 8, characterized in that: An elastic reset member is arranged in the driving slide groove, and the bottom end of the driving member is fixedly connected to the elastic reset member.

10. The measuring ruler for measuring the single crystal interface depth according to any one of claims 1-6, 8-9, characterized in that: An elastic support member is provided in the measuring chute, and the bottom end of the scale is connected to the measuring chute via the elastic support member.

Images