CN211992366U

CN211992366U - Dedicated clamping device of sapphire crystal block flat grinder

Info

Publication number: CN211992366U
Application number: CN202020641190.6U
Authority: CN
Inventors: 杨瑜锋; 陈涛; 周林
Original assignee: Guangdong Fuyuan Technology Co ltd
Current assignee: Guangdong Fuyuan Technology Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-11-24
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a dedicated clamping device of sapphire crystal block flat grinder relates to sapphire processing field. To many, the process of consumptive material among the prior art, the long problem of chronogenesis present this scheme, compress tightly through setting up at base plate first press according to the briquetting and the second press the briquetting all around. The method has the advantages that repeated viscose operation is not needed, and the working procedures of heating degumming and cooling are also necessarily saved. And the first end surface is limited by the positioning block, so that the cutting direction and the crystal direction are ensured to meet the processing precision, and the window piece does not need to be picked for multiple times to detect and correct the position. The first pressing blocks on the two sides are respectively provided with two pressing blocks, so that the problem that the edge of the crystal block close to the top and the bottom of the crucible is not flat can be solved.

Description

Dedicated clamping device of sapphire crystal block flat grinder

Technical Field

The utility model relates to a sapphire processing field especially relates to a dedicated clamping device of sapphire crystal block flat grinder.

Background

Sapphire, the major constituent of which is alumina, has a mohs hardness of 9, second only to diamond. Because of its excellent physical properties and stable chemical properties, it is widely used in high-end mobile phone cover plate and mobile phone film market. The sapphire crystal ingot grown by the heat exchange method is of an approximately cylindrical shape structure with inclination, the top of the crystal ingot is convex in a central arc shape but irregular in shape, and the bottom of the crystal ingot is easily influenced by the deformation of a crucible at high temperature to form an irregular shape.

The ingot is sliced according to a predetermined slicing scheme into a block such as ingot 10 shown in fig. 1, wherein the first end face 13 is sliced at a position where the ingot is close to the side wall of the crucible, and the second end face 14 is sliced perpendicular to the crucible. The first crystal orientation 11 in the ingot 10 has been obtained according to the ingot growth direction while being parallel to the first end face 13, the second end face 14, and the second crystal orientation 12 is parallel to the second end face 14 and perpendicular to the first end face 13.

After the ingot 10 is opened, the end surfaces at the two ends of the first crystal orientation 11 are close to the bottom and the top of the crucible, and the adjacent areas belong to poor areas and need to be cut off by a surface grinder. It is generally necessary to glue the ingot 10 to the iron plate 20 and manually draw a cut line 15 on the second end surface 14 to identify the defective region 16. And cutting a window sheet for orientation, adjusting the position of the iron plate 20 according to an orientation result, and circularly cutting a new window sheet for detection until the cutting direction meets the requirement.

And cutting the adjusted iron plate 20 and crystal block 10 assembly on a surface grinder to form defective areas 16 on two sides, heating the iron plate 20 to remove the glue, and naturally cooling the hot crystal block 10 to finish the process.

The conventional processing mode for cutting off the defective area has the following defects:

1. the wafer 10 needs to be glued in the poor cutting area, which consumes glue and alcohol and is not beneficial to reducing the production cost.

2. The glue operation time is long, and the glue needs to be dried and solidified. The iron plate is usually heated to be degummed, the iron plate is easy to thermally deform, the AB glue is high in brittleness, the iron plate needs to be tightly sucked by starting an electromagnetic table when being fixed on a surface grinding machine, and the iron plate is deformed in the suction process, so that the risk of degumming of crystal blocks and the iron plate is increased.

3. A square is adopted to draw a cutting line of a crystal block, and the parallelism between a cutting piece and the cutting line is manually calibrated by observing during the machine installation, so that the influence of human factors is large.

4. The crystal blocks need to be cut into window slices and then oriented before being cut, the orientation operation steps are complex, multiple slicing and orientation are needed, the working hours are consumed, and the production efficiency is low.

5. After the crystal ingot is cut, the crystal ingot needs to be heated to more than 200 ℃ to be degummed, and the risk of internal cracking is easily caused due to uneven heating of the crystal ingot in the heating and degumming process. The next process can be continued after natural cooling, the natural cooling time is long, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dedicated clamping device of sapphire crystal block flat grinder can save manufacturing material, also can save time and process.

The utility model relates to a special clamping device for a sapphire crystal block surface grinding machine, which comprises an iron base plate, wherein sliding grooves and sliding blocks which are matched and connected with the sliding grooves are respectively arranged on the two sides of the base plate in the cutting direction; the sliding block is provided with a first pressing block through a screw rod; the substrate is respectively provided with a height adjusting assembly at the entering side and the leaving side in the cutting direction, and the upper end of the height adjusting assembly is provided with a second pressing block; one end of the second pressing block is connected with the upper end of the height adjusting assembly, the other end of the second pressing block freely extends towards the middle of the substrate, and a concave platform is arranged at the free end of the second pressing block and used for accommodating a crystal block; a sinking groove is formed in the middle of the second pressing block, and a screw rod is arranged in the sinking groove and is vertically connected with the substrate; the base plate is fixedly provided with a positioning block below the second pressing block on the leaving side, and the extension plane of the positioning block is vertical to the cutting direction.

The height adjusting component is composed of two triangular gauge pairs with ladder teeth on the inclined surfaces.

The base plate respectively be equipped with the spout of two parallels in the both sides of cutting direction respectively, each spout all is equipped with corresponding slider, the first press block that corresponds is do not installed through the screw rod to each slider equally.

The second is according to the briquetting and has inlayed the gasket in concave station lower extreme face to install in the concave station through countersunk head bolt.

The gasket is made of nylon.

A dedicated clamping device of sapphire crystal block flat grinder, its advantage lies in, can compress tightly the crystal block through setting up at base plate first press the briquetting and the second press the briquetting all around, need not to relapse the viscose operation, also must save and heat and come unstuck and refrigerated process. And the first end surface is limited by the positioning block, so that the cutting direction and the crystal direction are ensured to meet the processing precision, and the window piece does not need to be picked for multiple times to detect and correct the position. The first pressing blocks on the two sides are respectively provided with two pressing blocks, so that the problem that the edge of the crystal block close to the top and the bottom of the crucible is not flat can be solved.

Drawings

Fig. 1 is a schematic diagram of a crystal block bonded to an iron plate in the prior art.

Fig. 2 is a schematic structural view of the holding device of the present invention.

Fig. 3 is a schematic view of the usage state of the clamping device of the present invention.

Fig. 4 is a cross-sectional view of a second pressing block of the clamping device of the present invention.

Reference numerals:

10-ingot, 11-first crystal orientation, 12-second crystal orientation, 13-first end face, 14-second end face, 15-cutting line and 16-poor region; 20-iron plate; 30-a base plate, 31-a sliding chute, 32-a positioning block and 33-a height adjusting component; 41-slide block, 42-first pressing block; 51-a second pressing block, 52-a sinking groove, 53-a gasket and 54-a sunk bolt; a-the cutting direction.

Detailed Description

As shown in fig. 2, the bottom of the clamping device for sapphire ingot surface grinding machine of the present invention is a flat iron substrate 30. The two sides of the substrate 30 in the cutting direction a are respectively provided with two sliding grooves 31, and a total of four sliding grooves 31. One end of each slide groove 31 is open and the other end extends toward the middle of the base plate 30. The slider 41 is adapted to the slide groove 31 and can slide in and out freely from the open end, so that the relative position of the slider to the ingot 10 can be adjusted. The slide block 41 is provided with a first pressing block 42 through a screw rod extending upwards, one slide block 41 corresponds to one first pressing block 42, and the end part of the screw rod is provided with a hexagonal part which can press the first pressing block 42 downwards along the screw rod.

The base plate 30 is provided with a height adjusting assembly 33 on the entering side and the leaving side of the cutting direction A respectively, and the height adjusting assembly 33 is composed of two triangular pairs with ladder teeth on the inclined surfaces and used for stabilizing the parallel support of the second pressing block 51. A second pressing block 51 is arranged above the height adjusting assembly 33, one end of the second pressing block 51 is connected with the upper end of the height adjusting assembly 33, and the other end freely extends towards the middle of the substrate 30. The lower part of the free end of the second pressing block 51 is provided with a concave table, and a gasket 53 made of nylon is embedded in the concave table, as shown in fig. 4. The spacer 53 is mounted in the recess by means of a countersunk bolt 54. The middle part of the second pressing block 51 is further provided with a sinking groove 52 extending in the same direction as the cutting direction a for adjusting the relative position with the ingot 10, and a screw rod vertical connection substrate 30 is arranged in the sinking groove 52. A positioning block 32 is arranged below the second pressing block 51 positioned at the departing side, and the extending plane of the positioning block 32 is vertical to the cutting direction A.

As shown in fig. 3, the clamping device of the present invention operates by drawing a cutting line 15 through the ingot 10 to identify a defective region 16. Then, the second end face 14 is placed in the middle of the substrate 30, and the first end face 13 abuts against the extension plane of the positioning block 32. Since the relationship between the first end face 13 and each crystal orientation has already been determined in the evolution scheme, the relationship between the cutting direction a and each crystal orientation can be determined by directly attaching the boule 10 to the substrate 30 in the above-described steps, without having to collect the orientation of the window pieces multiple times. The slide block 41 positions the first pressing block 42 above the ingot 10. The height of the height adjusting assembly 33 is adjusted to make the second pressing block 51 abut against the upper end surface of the ingot 10, and the ingot 10 is located at the concave station. The first pressing block 42 and the second pressing block 51 are pressed toward the substrate 30 by the screws, respectively, to press the ingot 10. Spacers 53 are effective to dampen boule 10 when it is being cut.

After the ingot 10 is fixed on the substrate 30, the substrate 30 is placed on an electromagnetic table of a surface grinder. The electromagnetic stage is activated to attract the substrate 30. And starting the surface grinder to process the defective area 16 along the cutting direction A, so as to obtain a finished product with the crystal orientation meeting the preset standard. And finally releasing the pressure of all the screws and taking out the finished product. The whole process does not need gluing, degumming, heating and cooling, thereby greatly reducing the material cost and improving the processing efficiency.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. The clamping device special for the sapphire crystal block surface grinding machine is characterized by comprising an iron base plate (30), wherein sliding grooves (31) and sliding blocks (41) matched and connected with the sliding grooves (31) are respectively arranged on two sides of the base plate (30) in the cutting direction (A); the sliding block (41) is provided with a first pressing block (42) through a screw rod; the base plate (30) is respectively provided with a height adjusting assembly (33) at the entering side and the leaving side in the cutting direction (A), and the upper end of the height adjusting assembly (33) is provided with a second pressing block (51); one end of the second pressing block (51) is connected with the upper end of the height adjusting assembly (33), the other end of the second pressing block freely extends towards the middle of the substrate (30), and a concave platform is arranged at the free end of the second pressing block and used for accommodating the crystal block (10); a sinking groove (52) is formed in the middle of the second pressing block (51), and a screw rod is arranged in the sinking groove (52) and is vertically connected with the substrate (30); a positioning block (32) is fixedly arranged below a second pressing block (51) on the departing side of the substrate (30), and the extension plane of the positioning block (32) is perpendicular to the cutting direction (A).

2. The clamping device special for the sapphire crystal block surface grinding machine according to claim 1, wherein the height adjusting assembly (33) is composed of two triangular pairs with trapezoidal teeth on the inclined surface.

3. The clamping device special for the sapphire crystal block surface grinding machine according to claim 1, wherein the base plate (30) is provided with two parallel sliding grooves (31) on two sides in the cutting direction (a), each sliding groove (31) is provided with a corresponding sliding block (41), and each sliding block (41) is provided with a corresponding first pressing block (42) through a screw rod.

4. The clamping device special for the sapphire crystal block surface grinding machine according to claim 1, wherein the second pressing block (51) is embedded with a gasket (53) in the lower end face of the concave table and is installed in the concave table through a countersunk bolt (54).

5. The clamping device special for the sapphire crystal block surface grinding machine according to claim 4, wherein the gasket (53) is made of nylon.