Decorative diamond production method and decorative diamond produced by same

Abstract

The invention discloses a decorative diamond production method and a decorative diamond produced by the method, and the method comprises the following steps: using plate glass as a raw material, laying a reflective film on one side surface of the plate glass, cutting the plate glass into glass strips, bonding the glass strips to the end part of a clamp needle of an abrasive diamond cutting machine, and cutting the glass strips into a plurality of decorative diamond blanks; and then grinding the peripheral side surface of the decorative drill blank to be consistent with the outer contour size of the large bottom plane on the decorative drill, finally cutting a crown facet at one end, deviating from the clamp needle, of the decorative drill blank so as to form the decorative drill with a small top plane, taking down the decorative drill, performing quality inspection, and removing defective products, thereby obtaining a finished product of the decorative drill. According to the production method of the decorative diamonds, the production process steps of the decorative diamonds can be simplified, and the equipment investment cost and the manual labor cost are reduced; and compared with a traditional mode of cutting and processing the decorative diamonds by taking glass balls as raw materials, the appearance geometric dimension precision of the finished decorative diamonds is remarkably improved, and the quality of the finished diamonds and the qualified rate of the finished diamonds can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of decorative diamond production and processing methods, and in particular to a decorative diamond production method and a decorative diamond obtained by the method. Background Art

[0002] Decorative diamonds are used in all aspects of daily life, usually including flat-bottomed diamonds and hot-drills. For example, flat-bottomed diamonds for manicure are bonded to the nails by glue coated on the bottom surface, and decorative hot-drills are bonded and fixed to the surface of the jewelry by a hot-melt adhesive layer set on the bottom surface to play a decorative role. Most existing decorative diamonds use glass balls as raw materials, and the specific production process is as follows:

[0003] (1) Use resin hot melt adhesive powder to bond the glass ball to the top of the fixture needle of the grinding and cutting machine. First, cut the hemisphere of the glass ball exposed outside the fixture needle into a pointed top with equally divided facets. Then heat the fixture needle of the grinding and cutting machine to soften the hot melt adhesive, and then use a roller brush to brush the glass ball that has been cut into a pointed top from the fixture needle. Among them, the fixture needles on the grinding and cutting machine are generally arranged in a row or a column, and the number of fixture needles varies from dozens to hundreds according to the size of the glass ball. The glass ball brushed off at this time is called a single-pointed glass ball. Wash and dry the single-pointed glass balls, and then use a template with pits to arrange the single-pointed glass balls neatly. Then use a blister machine to fix the neatly arranged single-pointed glass balls on the blister sheet.

[0004] Place the single-pointed glass ball fixed with a blister sheet on the chuck of a disc grinding and cutting machine, cut off a part of the remaining hemisphere on the single-pointed glass ball to form a large bottom plane. The distance between the outer edge of the large bottom plane and the single-pointed facet is called the waist line. Then remove the blister sheet from the chuck, flip it 180°, and place it back on the chuck of the disc grinding and cutting machine. Then cut off the top of the tip of the single-pointed glass ball to form a small top plane. At this time, the cutting is completed, and the remaining part of the glass ball retained on the blister sheet is peeled off to obtain a bare diamond with angled and equally divided facets and flat surfaces at both ends.

[0005] (2) Clean and dry the bare diamonds, arrange the bare diamonds neatly on the bottom plate with the small top plane facing upwards, spray a layer of water-soluble glue on the facets, waistline and small top plane of the neatly arranged bare diamonds, place a flat plate on the small top plane of the bare diamonds sprayed with water-soluble glue, then place the bottom plate and the flat plate holding the bare diamonds in an oven to dry the water-soluble glue on the bare diamonds to form a layer of water-soluble glue film and fix it on the flat plate, flip the flat plate carrying the bare diamonds 180° so that the large bottom plane of the bare diamonds is facing upwards, then send the flat plate carrying the bare diamonds into a vacuum coating machine, and coat a layer of metal film on the large bottom plane of the bare diamonds. The material of the metal film can be aluminum or silver. The function of the metal film is to reflect light when light shines on the decorative diamonds. Alternatively, a vacuum coating machine can be used to vacuum-coat the cleaned bare diamonds and fix them on the vacuum coating plate, with the large bottom plane of the bare diamonds exposed, then the vacuum coating plate carrying the bare diamonds is sent into a vacuum coating machine, and a layer of metal film is coated on the large bottom plane of the bare diamonds.

[0006] (3) The plate carrying the bare diamond coated with the metal film is taken out from the vacuum coating machine, and then the paint is sprayed on the metal film of the bare diamond and dried, and then the bare diamond is peeled off from the plate. For the bare diamonds processed into flat-bottomed diamonds, the bare diamonds are placed in a drum, rolled to clean off the hydrosol film on the waistline, facets and small top plane, and dried to obtain the finished flat-bottomed diamonds; for the bare diamonds processed into hot-drilled diamonds, the bare diamonds that have been sprayed with paint need to be laid on the wire mesh with the small top plane facing downward and the large bottom plane facing upward, and a powder sprinkler is used to sprinkle the special hot-melt adhesive powder for decorative diamonds on the large bottom plane of the bare diamonds that have been coated and sprayed with paint, and then the wire mesh carrying the bare diamonds is sent into an oven for heating, so that the hot-melt adhesive powder is fixed on the paint layer of the large bottom plane of the bare diamond after being melted by the heat, and the wire mesh carrying the bare diamonds is taken out of the oven, and the diamond body on the wire mesh is removed after cooling to obtain the rough decorative diamond, and finally, the rough hot-drilled diamond with a hot-melt adhesive layer is placed in a drum, rolled to clean off the hydrosol film on the waistline, facets and small top plane to obtain the finished hot-drilled diamond.

[0007] The problems with the above production and processing methods of decorative diamonds are: (1) Since the raw materials used are glass balls, the production process of glass balls is to pour melted glass water into a mold and press it. In the process of forming the glass balls, bubbles or impurities will inevitably exist. Therefore, bubbles or impurities will inevitably exist in the finished decorative diamonds made from glass balls as raw materials, resulting in low quality of the decorative ornaments. (2) In order to ensure the production and processing efficiency of decorative diamonds, thousands of single-pointed glass balls are usually fixed on the same blister sheet. Therefore, when cutting the large bottom plane or the small top plane, the wrapping force provided by the relatively thin blister sheet cannot withstand the strong cutting force applied by the cutter head, resulting in the blister sheet becoming loose or displaced, resulting in the naked diamonds having skewed waistlines, poor flatness of the large bottom plane or the small top plane, and uneven thickness between the large bottom plane and the small top plane after cutting, resulting in low accuracy of the geometric dimensions of the finished decorative diamonds. (3) Before metallization, tens of thousands or even hundreds of thousands of cleaned bare diamonds need to be arranged in a regular pattern, and the small top plane ends of the bare diamonds need to be glued and fixed on a flat plate with water-soluble glue and dried, or the cleaned bare diamonds need to be fixed on a blister plate with a blister machine. During the layout process, the large bottom plane of the bare diamonds is contaminated secondary, which can easily cause problems such as pinholes, poor adhesion, and low reflectivity in the subsequent metal coating on the bare diamonds. (4) When bare diamonds or rough hot diamonds processed into flat-bottomed diamonds are placed in a drum for washing to remove the waistline, facets, and water-soluble glue film on the small top plane, the facets of the diamond body will be scratched, which seriously reduces the quality of the decorative diamonds. To this end, the present invention proposes a decorative diamond production method and a decorative diamond obtained by the method, in order to solve the above-mentioned technical problems and improve the production and processing efficiency and quality of decorative diamonds. Summary of the invention

[0008] The purpose of the present invention is to overcome the defects in the prior art and provide a method for producing decorative diamonds and the decorative diamonds made by the method. Since flat glass is used as the raw material, a reflective film, or a reflective film / hot-melt adhesive layer, or a reflective film / hot-melt adhesive layer / substrate plate is firstly arranged on one side of the flat glass, and then the flat glass is cut into glass strips, decorative diamond blanks, and decorative diamond finished products in sequence. During the processing, it is not necessary to cut out a bare diamond intermediate, and the steps of arranging the bare diamond intermediate on the bottom plate and spraying a water-soluble adhesive film before the metal film coating, paint film spraying, and hot-melt adhesive layer laying process are omitted, thereby avoiding secondary pollution caused by the arrangement process of the bare diamond on the bottom plate. The invention helps to greatly improve the uniformity of film formation, adhesion and reflective effect of the reflective film on one side of the flat glass, avoids the occurrence of pinhole phenomenon, and helps to greatly improve the production and processing efficiency of decorative diamonds; it eliminates the step of placing the rough decorative diamonds in a drum for cleaning to remove the water-soluble adhesive film on the waistline and facets, and for the rough decorative diamonds adhered to the substrate plate, they only need to be placed in clean water to dissolve the water-soluble film layer and then peel off the substrate plate, thereby avoiding damage to the metal film or hot-melt adhesive layer on the decorative diamond during the rolling washing process and scratches on the crown facets of the decorative diamond caused by the violent rolling washing process, which helps to greatly improve the apparent quality and yield rate of the decorative diamonds, has high economic benefits and good environmental protection.

[0009] One of the purposes of the present invention is to design a method for producing decorative diamonds, comprising the following steps:

[0010] S1: clean and dry the flat glass for later use;

[0011] S2: applying a reflective film on one side of the cleaned flat glass;

[0012] S3: Cut the flat glass with a reflective film on one side into a plurality of glass strips, and the width of the glass strips is greater than the outer contour of the large bottom plane of the decorative drill;

[0013] S4: bonding and fixing the side of the glass strip with the reflective film to the top of several clamp needles on the diamond grinding and cutting machine, firstly cutting the glass strip into several decorative diamond blanks bonded to the top of the clamp needles one by one, and the outer contour size of the outer peripheral side of the decorative diamond blank is slightly larger than the outer contour size of the large bottom plane of the decorative diamond, then grinding the outer peripheral side of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane of the decorative diamond, and finally cutting the crown facet of the end of the decorative diamond blank away from the clamp needle to form a decorative diamond with a small top plane;

[0014] S5: The decorative diamond is removed from the fixture needle, and the finished decorative diamond is obtained after quality inspection.

[0015] The preferred technical solution is that the specific operation of step S4 is to fix one side of each glass strip with the reflective film to the top of several clamp needles located in the same row or column on the grinding and cutting machine by feeding hot melt adhesive, cut the glass strip bonded and fixed to the top of the clamp needle into several decorative diamond blanks bonded to the top of the clamp needle in a one-to-one correspondence by a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane on the decorative diamond by the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet of the end of the decorative diamond blank bonded to the top of the clamp needle away from the clamp needle by the facet cutting roller or facet cutting grinding disc on the grinding and cutting machine to form a rough decorative diamond with a small top plane, and then grind and polish the rough decorative diamond by the polishing roller or polishing disc on the grinding and cutting machine to form a decorative diamond;

[0016] The specific operation of step S5 is to heat the clamp needle on the grinding and cutting machine until the loading hot melt adhesive is softened, use a roller brush to brush the rough decorative diamond off the clamp needle, clean and remove the loading hot melt adhesive remaining on the bottom surface of the rough decorative diamond and dry it, and obtain the finished decorative diamond after quality inspection and removal of unqualified products.

[0017] A further preferred technical solution is that in the step S5, the loading hot melt adhesive used is a resin-type hot melt adhesive; in the step S5, the solvent used to clean and remove the loading hot melt adhesive remaining on the large bottom surface of the rough decorative diamond is a weak alkaline cleaning solution.

[0018] A further preferred technical solution is that the weak alkaline cleaning solution used is a sodium carbonate aqueous solution or a sodium hydroxide aqueous solution, and the pH of the weak alkaline cleaning solution is 8-9.

[0019] Another preferred technical solution is that the step S2 further includes laying a hot melt adhesive layer on the reflective film on one side of the flat glass.

[0020] A further preferred technical solution is that the specific operation of laying the hot melt adhesive layer in step S2 is: spreading a layer of hot melt adhesive powder on the reflective film of the flat glass, and then heating the flat glass to form the hot melt adhesive layer on the reflective film, and the thickness of the hot melt adhesive layer is 0.1 to 0.3 mm.

[0021] A further preferred technical solution is that the specific operation of step S4 is to bond and fix one side of each glass strip having the reflective film to the top of several clamp needles in the same row or column on the grinding and cutting machine through the hot melt adhesive layer, cut the glass strip bonded and fixed to the top of the clamp needle into several decorative diamond blanks bonded to the top of the clamp needle in a one-to-one correspondence by a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane on the decorative diamond by the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet of the end of the decorative diamond blank bonded to the top of the clamp needle away from the clamp needle by the facet cutting roller or facet cutting grinding disc on the grinding and cutting machine to form a rough decorative diamond with a small top plane, and then grind and polish the rough decorative diamond by the polishing roller or polishing disc on the grinding and cutting machine to form a decorative diamond;

[0022] The specific operation of step S5 is to heat the fixture needle on the grinding and cutting machine until the hot melt adhesive layer softens, use a roller brush to brush the decorative diamond off the fixture needle, and obtain the finished decorative diamond after quality inspection to remove unqualified products.

[0023] A further preferred technical solution is that in the step S2, a water-soluble film layer, an auxiliary hot-melt adhesive layer and a substrate plate are sequentially bonded to the hot-melt adhesive layer of the flat glass, and the substrate plate is located on a side away from the hot-melt adhesive layer on the flat glass;

[0024] The specific operation of step S4 is to bond and fix each glass strip to the top of a plurality of fixture pins located in the same row or column on the grinding and cutting machine through the feeding hot melt adhesive arranged between the substrate plate and the top of the fixture pin, cut the glass strip bonded and fixed to the top of the fixture pin into a plurality of decorative diamond blanks bonded to the top of the fixture pin in a one-to-one correspondence manner through a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane on the decorative diamond through the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet of the end of the decorative diamond blank bonded to the top of the fixture pin away from the fixture pin through the faceting cutting roller or faceting cutting grinding disc on the grinding and cutting machine to form a rough decorative diamond with a small top plane, and then grind and polish the rough decorative diamond using the polishing roller or polishing disc on the grinding and cutting machine to form a decorative diamond;

[0025] The specific operation of step S5 is to heat the clamp needle on the grinding and cutting machine until the hot melt adhesive is softened, use a roller brush to brush the decorative diamond off the clamp needle, and then place the decorative diamond in clean water to dissolve the water-soluble film layer, remove the substrate plate and dry it, and obtain the finished decorative diamond after quality inspection and removal of unqualified products.

[0026] A further preferred technical solution is that the specific operation of bonding the backing plate in the step S2 is to sequentially lay a layer of water-soluble film, an auxiliary hot-melt adhesive film and a layer of substrate plate on the hot-melt adhesive layer of the flat glass, and use a hot pressing machine to hot-press the backing plate, the auxiliary hot-melt adhesive film and the water-soluble film together with the hot-melt adhesive layer of the flat glass, wherein the water-soluble film forms a water-soluble film layer, the auxiliary hot-melt adhesive film forms an auxiliary hot-melt adhesive layer, and the substrate plate is a thin plate.

[0027] Another preferred technical solution is that the reflective film includes a metal film and a paint layer, and the metal film is located between the flat glass and the paint layer; or, the reflective film is a reflective paint film.

[0028] A further preferred technical solution is that the metal film is an aluminum film layer or a silver film layer.

[0029] A further preferred technical solution is that the specific operation of step S2 is to place the cleaned flat glass in a vacuum coating machine, coat a layer of metal film on one side of the flat glass under a vacuum environment, and then coat a layer of paint film on the metal film of the flat glass by spraying or pouring, and the paint film forms a paint layer after drying.

[0030] A further preferred technical solution is that the outer peripheral surfaces of the pair of roller cutters, the outer peripheral grinding roller, the facet cutting roller and the facet cutting grinding disc are all made of electroplated diamond material, and the outer peripheral surfaces of the pair of roller cutters are provided with a plurality of annular grooves for cutting the glass strip into a plurality of decorative diamond blanks at intervals along their axial length direction;

[0031] In the step S3, the width of the glass strip is greater than the outer contour of the large bottom plane of the decorative drill by 0.2 to 1 mm.

[0032] The second object of the present invention is to provide a decorative diamond, which is prepared by the above-mentioned decorative diamond production method.

[0033] The advantages and beneficial effects of the present invention are:

[0034] 1. A decorative diamond production method of the present invention uses flat glass as raw material. Compared with the production and processing method of traditional decorative diamonds, the processing steps of single-pointed glass balls and bare diamond intermediates are omitted, thereby eliminating part of the equipment used in the processing steps of single-pointed glass balls and bare diamond intermediates, and reducing manual labor, which helps to simplify the production process steps of decorative diamonds, that is, helps to reduce equipment investment costs and manual labor costs; during the processing, only the crown facets need to be cut from the decorative diamond blank, and the large bottom plane and the small top plane are naturally formed, and the decorative diamond blank will not shift during the cutting of the crown facets. Compared with the traditional method of cutting and processing decorative diamonds using glass balls as raw materials, the geometric size accuracy of the finished decorative diamonds is significantly improved, which helps to greatly improve the finished product quality and product qualification rate of the installed diamonds.

[0035] 2. Compared with the traditional production and processing method of decorative diamonds, the production method of the present invention uses glass balls as raw materials. No pressing molds are required in the production and processing of flat glass. The method has higher purity, no bubbles, uniform thickness, small tolerance, and is easy to purchase. The texture of the processed decorative diamond products is greatly improved, the visual reflective effect is better, and the overall quality is better.

[0036] 3. A decorative diamond production method of the present invention uses flat glass as raw material, firstly sets a reflective film, or a reflective film / hot melt adhesive layer, or a reflective film / hot melt adhesive layer / substrate plate on one side of the flat glass, and then cuts the flat glass into glass strips, decorative diamond blanks, and decorative diamond finished products in sequence. During the processing, it is not necessary to cut out the bare diamond intermediate, and the steps of arranging the bare diamond intermediate on the bottom plate and spraying the water-soluble adhesive film before the metal film coating, paint film spraying, and hot melt adhesive layer laying process are omitted, and the secondary pollution caused by the arrangement process of the bare diamond on the bottom plate is avoided, which helps to greatly improve the reflective film on the flat glass. The uniformity of film formation, adhesion and reflective effect on one side of the glass can be improved, and the occurrence of pinholes can be avoided, which helps to greatly improve the production and processing efficiency of decorative diamonds; the step of placing the rough decorative diamonds in a drum for cleaning to remove the water-soluble adhesive film on the waistline and facets is omitted, and the rough decorative diamonds adhered to the substrate plate only need to be placed in clean water to dissolve the water-soluble film layer and then peel off the substrate plate, thereby avoiding damage to the metal film or hot-melt adhesive layer on the decorative diamond during the rolling washing process and scratches on the crown facets of the decorative diamond caused by the violent rolling washing process, which helps to greatly improve the apparent quality and yield rate of decorative diamonds, with high economic benefits and good environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a production process flow chart of a flat bottom drill in Example 1:

[0038] Figure 2 is a production process flow chart of a hot drill in Example 2;

[0039] Figure 3 is a production process flow chart of a hot diamond in Example 3;

[0040] Figure 4 is a schematic structural diagram of the adhesive-coated flat glass in Example 3;

[0041] Figure 5 is a schematic diagram of the structure of the adhesive glass strip in Example 3;

[0042] Figure 6 is a schematic diagram of the structure of a pair of rolling cutters on the grinding and cutting machine in Example 3;

[0043] Figure 7 It is a schematic diagram of the structure of the clamping state of the hot diamond blank on the diamond grinding and cutting machine.

[0044] In the figure: 1. Flat glass; 2. Metal film; 3. Paint layer; 4. Hot melt adhesive layer; 5. Water-soluble film layer; 6. Auxiliary hot melt adhesive layer; 7. Backing plate; 8. Clamp needle; 9. Clamp seat; 10. Rolling cutter; 11. Annular groove; 12. Hot drill blank. DETAILED DESCRIPTION

[0045] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0046] Examples 1 to 3 are specific implementations of a decorative diamond production method of the present invention.

[0047] Example 1

[0048] like Figure 1 As shown, a flat bottom drill production method includes the following steps:

[0049] S1: clean and dry the flat glass for later use;

[0050] S2: applying a reflective film on one side of the cleaned flat glass;

[0051] S3: Cut the flat glass with a reflective film on one side into a plurality of glass strips, and the width of the glass strips is greater than the outer contour of the large bottom plane on the flat bottom drill;

[0052] S4: bonding and fixing the side of the glass strip with the reflective film to the top of several clamp needles on the drill grinding and cutting machine, firstly cutting the glass strip into several flat-bottomed drill blanks bonded to the top of the clamp needles one by one, and the outer contour size of the outer peripheral side of the flat-bottomed drill blank is slightly larger than the outer contour size of the large bottom plane of the flat-bottomed drill, then grinding the outer peripheral side of the flat-bottomed drill blank to be consistent with the outer contour size of the large bottom plane of the flat-bottomed drill, and finally cutting a crown facet on the end of the flat-bottomed drill blank away from the clamp needle to form a flat-bottomed drill with a small top plane;

[0053] S5: Remove the flat bottom drill from the fixture needle and obtain the finished flat bottom drill after quality inspection.

[0054] Preferably, the specific operation of step S4 is to fix the side surface of each glass strip having the reflective film to the top of a plurality of fixture needles in the same row or column on the grinding and cutting machine by means of hot melt adhesive, cut the glass strip bonded and fixed to the top of the fixture needle into a plurality of flat-bottomed diamond blanks bonded to the top of the fixture needles in a one-to-one correspondence manner by means of a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the flat-bottomed diamond blank to be consistent with the outer contour size of the large bottom plane on the flat-bottomed diamond by means of an outer peripheral surface grinding roller on the grinding and cutting machine, cut a crown facet from the end of the flat-bottomed diamond blank bonded to the top of the fixture needle away from the fixture needle by means of a faceting cutting roller or a faceting cutting grinding disc on the grinding and cutting machine to form a rough flat-bottomed diamond with a small top plane, and then grind and polish the rough flat-bottomed diamond by means of a polishing roller or a polishing disc on the grinding and cutting machine to form a flat-bottomed diamond;

[0055] The specific operation of step S5 is to heat the clamp needle on the grinding drill cutting machine until the loading hot melt adhesive is softened, use a roller brush to brush the rough flat bottom drill off the clamp needle, clean and remove the loading hot melt adhesive remaining on the large bottom surface of the rough flat bottom drill and dry it, and obtain the finished flat bottom drill after quality inspection and removal of unqualified products.

[0056] Further preferably, in the step S5, the loading hot melt adhesive used is a resin-type hot melt adhesive; in the step S5, the solvent used to clean and remove the loading hot melt adhesive remaining on the large bottom plane of the rough flat-bottomed drill is a weak alkaline cleaning solution.

[0057] More preferably, the weak alkaline cleaning solution used is a sodium carbonate aqueous solution or a sodium hydroxide aqueous solution, and the pH of the weak alkaline cleaning solution is 8-9.

[0058] Further preferably, the reflective film comprises a metal film and a paint layer, and the metal film is located between the flat glass and the paint layer; or, the reflective film is a reflective paint film.

[0059] Further preferably, the metal film is an aluminum film layer or a silver film layer.

[0060] Further preferably, the specific operation of step S2 is to place the cleaned flat glass in a vacuum coating machine, coat a layer of metal film on one side of the flat glass under a vacuum environment, and then coat a layer of paint film on the metal film of the flat glass by spraying or coating, and form a paint layer after the paint film dries.

[0061] Further preferably, the outer peripheral surfaces of the pair of roller cutters, the outer peripheral grinding roller, the facet cutting roller and the facet cutting grinding disc are all made of electroplated diamond material, and the outer peripheral surfaces of the pair of roller cutters are provided with a plurality of annular grooves for cutting the glass strip into a plurality of flat-bottomed diamond blanks at intervals along their axial length direction;

[0062] In the step S3, the width of the glass strip is greater than the outer contour of the large bottom plane of the flat-bottom drill by 0.2 to 1 mm.

[0063] Example 2

[0064] like Figure 2 As shown, a hot-drilling production method includes the following steps:

[0065] S1: clean and dry the flat glass for later use;

[0066] S2: applying a reflective film on one side of the cleaned flat glass;

[0067] S3: Cut the flat glass with a reflective film on one side into a plurality of glass strips, and the width of the glass strips is greater than the outer contour of the large bottom plane of the hot drill;

[0068] S4: The side of the glass strip with the reflective film is bonded and fixed to the top of several clamp needles on the diamond grinding and cutting machine. First, the glass strip is cut into several hot-drill blanks bonded to the top of the clamp needles one by one, and the outer contour size of the outer peripheral side of the hot-drill blank is slightly larger than the outer contour size of the large bottom plane of the hot-drill. Then, the outer peripheral side of the hot-drill blank is ground to be consistent with the outer contour size of the large bottom plane of the hot-drill. Finally, the crown facet is cut from the end of the hot-drill blank away from the clamp needle to form a hot-drill with a small top plane.

[0069] S5: Remove the hot-drill from the fixture needle and obtain the hot-drill finished product after quality inspection.

[0070] Preferably, the step S2 further comprises laying a hot melt adhesive layer on the reflective film on one side of the flat glass.

[0071] Further preferably, the specific operation of laying the hot melt adhesive layer in step S2 is: spreading a layer of hot melt adhesive powder on the reflective film of the flat glass, and then heating the flat glass to form the hot melt adhesive layer on the reflective film, and the thickness of the hot melt adhesive layer is 0.1-0.3 mm.

[0072] Further preferably, the specific operation of step S4 is to bond and fix one side of each glass strip having the reflective film to the top of a plurality of fixture pins in the same row or column on the grinding and cutting machine through the hot melt adhesive layer, cut the glass strip bonded and fixed to the top of the fixture pin into a plurality of hot diamond blanks bonded to the top of the fixture pins in a one-to-one correspondence manner by a pair of roller cutters provided correspondingly on the grinding and cutting machine, grind the outer peripheral side profile of the hot diamond blank to be consistent with the outer contour size of the large bottom plane on the hot diamond by the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet from the end of the hot diamond blank bonded to the top of the fixture pin away from the fixture pin by the faceting cutting roller or the faceting cutting grinding disc on the grinding and cutting machine to form a hot diamond rough product with a small top plane, and then grind and polish the hot diamond rough product by the polishing roller or the polishing disc on the grinding and cutting machine to form a hot diamond;

[0073] The specific operation of step S5 is to heat the clamp needle on the grinding and cutting machine until the hot melt adhesive layer softens, use a roller brush to brush the hot diamonds off the clamp needle, and obtain the hot diamond finished product after quality inspection and removal of unqualified products.

[0074] Further preferably, the reflective film comprises a metal film and a paint layer, and the metal film is located between the flat glass and the paint layer; or, the reflective film is a reflective paint film.

[0075] Further preferably, the metal film is an aluminum film layer or a silver film layer.

[0076] Further preferably, the specific operation of step S2 is to place the cleaned flat glass in a vacuum coating machine, coat a layer of metal film on one side of the flat glass under a vacuum environment, and then coat a layer of paint film on the metal film of the flat glass by spraying or coating, and form a paint layer after the paint film dries.

[0077] Further preferably, the outer circumferences of the pair of roller cutters, the outer circumference grinding roller, the facet cutting roller and the facet cutting grinding disc are all made of electroplated diamond material, and the outer circumferences of the pair of roller cutters are provided with a plurality of annular grooves for cutting the glass strip into a plurality of hot diamond blanks at intervals along the axial length direction thereof;

[0078] In the step S3, the width of the glass strip is greater than the outer contour of the large bottom plane of the hot diamond by 0.2 to 1 mm.

[0079] Example 3

[0080] like Figures 3 to 7 As shown, a hot-drilling production method includes the following steps:

[0081] S1: Clean and dry the flat glass 1 for later use;

[0082] S2: applying a reflective film on one side of the cleaned flat glass 1;

[0083] S3: Cutting the flat glass 1 with a reflective film on one side into a plurality of glass strips, wherein the width of the glass strips is greater than the outer contour of the large bottom plane of the hot drill;

[0084] S4: The side of the glass strip with the reflective film is bonded and fixed to the top of a plurality of clamp needles 8 on the diamond grinding and cutting machine. First, the glass strip is cut into a plurality of hot-drill blanks bonded to the top of the clamp needles 8 one by one, and the outer peripheral side profile size of the hot-drill blank is slightly larger than the outer peripheral size of the upper large bottom plane of the hot-drill. Then, the outer peripheral side of the hot-drill blank is ground to be consistent with the outer peripheral size of the upper large bottom plane of the hot-drill. Finally, the crown facet is cut from the end of the hot-drill blank away from the clamp needle 8 to form a hot-drill with a small top plane.

[0085] S5: Remove the hot-drill from the fixture needle and obtain the hot-drill finished product after quality inspection.

[0086] Preferably, the step S2 further comprises laying a hot melt adhesive layer 4 on the reflective film on one side of the flat glass 1 .

[0087] Further preferably, the specific operation of laying the hot melt adhesive layer in step S2 is: spreading a layer of hot melt adhesive powder on the reflective film of the flat glass 1, and then heating the flat glass 1 to form the hot melt adhesive layer 4 on the reflective film, and the thickness of the hot melt adhesive layer 4 is 0.1-0.3 mm.

[0088] Further preferably, in the step S2, a water-soluble film layer 5, an auxiliary hot melt adhesive layer 6 and a substrate plate 7 are sequentially bonded to the hot melt adhesive layer 4 of the flat glass 1, and the substrate plate 7 is located on a side away from the hot melt adhesive layer 4 on the flat glass 1;

[0089] The specific operation of step S4 is to fix each glass strip to the top of a plurality of clamp needles 8 located in the same row or column on the grinding and drilling cutting machine through the feeding hot melt adhesive arranged between the substrate plate 7 and the top of the clamp needle 8, wherein the plurality of clamp needles 8 located in the same row or column are all located on the same clamp seat 9, and cut the glass strip bonded and fixed to the top of the clamp needle 8 into a plurality of hot diamond blanks 12 bonded to the top of the clamp needle 8 in a one-to-one manner by a pair of corresponding rolling cutters 10 arranged on the grinding and drilling cutting machine (see attached drawing). Figure 7), grinding the outer peripheral side profile of the hot diamond blank 12 to be consistent with the outer contour size of the large bottom plane on the hot diamond by using the outer peripheral surface grinding roller on the diamond grinding and cutting machine, cutting the crown facet of the end of the hot diamond blank bonded to the top of the clamp needle 8 away from the clamp needle 8 by using the faceting cutting roller or faceting cutting grinding disc on the diamond grinding and cutting machine to form a hot diamond rough product with a small top plane, and then grinding and polishing the hot diamond rough product by using the polishing roller or polishing disc on the diamond grinding and cutting machine to form a hot diamond;

[0090] The specific operation of step S5 is to heat the fixture needle 8 on the grinding and cutting machine until the hot melt adhesive is softened, use a roller brush to brush the hot drill off the fixture needle, and then place the hot drill in clean water to dissolve the water-soluble film layer 5, remove the substrate plate 7 and dry it, and obtain the hot drill finished product after quality inspection and removal of unqualified products.

[0091] Further preferably, the specific operation of bonding the backing plate in the step S2 is to sequentially lay a layer of water-soluble film, an auxiliary hot-melt adhesive film and a layer of substrate plate 7 on the hot-melt adhesive layer 4 of the flat glass 1, and use a hot pressing machine to hot-press the backing plate, the auxiliary hot-melt adhesive film and the water-soluble film together with the hot-melt adhesive layer 4 of the flat glass 1, wherein the water-soluble film forms a water-soluble film layer 5, the auxiliary hot-melt adhesive film forms an auxiliary hot-melt adhesive layer 6, and the substrate plate 7 is a thin plate.

[0092] Further preferably, the reflective film comprises a metal film 2 and a paint layer 3, and the metal film 2 is located between the flat glass 1 and the paint layer 3; or, the reflective film is a reflective paint film.

[0093] Further preferably, the metal film 2 is an aluminum film layer or a silver film layer.

[0094] Further preferably, the specific operation of step S2 is to place the cleaned flat glass 1 in a vacuum coating machine, coat a layer of metal film 2 on one side of the flat glass 1 under a vacuum environment, and then apply a layer of paint film on the metal film 2 of the flat glass 1 by spraying or curtain coating, and form a paint layer 3 after the paint film is dried.

[0095] Further preferably, the outer peripheral surfaces of the pair of roller cutters 10, the outer peripheral grinding roller, the faceting cutting roller and the faceting cutting grinding disc are all made of electroplated diamond material, and the outer peripheral surfaces of the pair of roller cutters 10 are provided with a plurality of annular grooves 11 for cutting the glass strip into a plurality of hot diamond blanks at intervals along the axial length direction thereof;

[0096] In the step S3, the width of the glass strip is greater than the outer contour of the large bottom plane of the hot diamond by 0.2 to 1 mm.

[0097] Specifically, in step S2, a metal film 2, a paint layer 3, a hot melt adhesive layer 4, a water-soluble film layer 5, an auxiliary hot melt adhesive layer 6 and a substrate plate 7 are sequentially arranged on one side of the flat glass 1 to obtain a flat glass with adhesive. Figure 4 In step S3, the glass strips cut from the adhesive flat glass are adhesive glass strips, and their structure is shown in the attached Figure 5 .

[0098] When the large bottom plane of the hot drill is circular, the radial section of the annular grooves 11 on the outer peripheral surfaces of the pairs of rolling cutters 10 is a semicircular groove structure, and the corresponding annular grooves 11 on the outer peripheral surfaces of the pairs of rolling cutters 10 are matched to form a circular cutting cavity with a diameter slightly larger than the outer contour size of the large bottom plane of the hot drill by 0.2 to 1 mm. The structure is shown in the attached Figure 6 At this time, the hot diamond blank 12 cut by the rolling cutter 10 is a glass disc with glue.

[0099] In addition, for decorative drills of different shapes and structures, the annular grooves on the outer circumference of the pair of roller cutters can be designed as groove structures of corresponding shapes, so that the corresponding annular grooves on the outer circumference of the pair of roller cutters can be matched to form a cutting cavity that is slightly enlarged in proportion to the outer contour size of the large bottom plane on the decorative drill. For example, when the processed decorative drill is a square, rectangular, diamond, oval, teardrop, horse eye, etc., it is only necessary to select the pair of roller cutters corresponding to the cutting cavity.

[0100] Several clamp needles 8 located in the same row or column on the drill grinding and cutting machine are all located on the same clamp seat 9, so that it is convenient to uniformly set a corresponding number of clamp needles 8 on the clamp seat 9 according to decorative drills of different sizes and specifications, thereby ensuring that the method of the present invention can be smoothly implanted and implemented on the drill grinding and cutting machine on the current existing decorative drill production line, which helps to reduce the equipment investment cost of decorative drill production enterprises.

[0101] In step S1 of embodiments 1 to 3, the flat glass 1 is cleaned and dried to make the surface of the flat glass 1 smooth and free of contaminants, so that the metal film 2 (or the reflective paint film sprayed on) coated on one side of the flat glass 1 in step 2 has a more uniform and fine texture, no pinholes, better reflective effect, and better adhesion;

[0102] In step S2, the cleaned flat glass 1 is subjected to a metal film coating operation in a vacuum coating machine, the purpose of which is to prevent impurities in the external environment from entering the metal film 2 and to prevent the metal film 2 from being oxidized by oxygen in the air during the formation process, thereby further ensuring that the metal film 2 formed on one side of the flat glass 1 has a more uniform and delicate texture, no pinholes, better reflective effect, and better adhesion, and is applicable to aluminum-plated film or silver-plated film; the coating method of paint can be selected as spray coating or flow coating according to the actual production line paint coating equipment, so as not to increase the economic burden on the production and processing production line equipment of decorative diamonds;

[0103] In step S2, the hot melt adhesive powder is directly spread on the reflective film of the flat glass 1. Compared with the traditional hot-drilling production and processing method, the steps of arranging the bare diamonds on the bottom plate and spraying the water-soluble adhesive film are omitted, the operation is simpler and faster, and the secondary pollution of the bare diamond bottom surface caused by spraying the water-soluble adhesive film is avoided, which helps to further improve the quality of the metal film 2 plated on one side of the flat glass 1;

[0104] In steps S3 and S4, the adhesive flat glass is cut into glass strips with a width larger than the outer contour size of the large bottom plane on the decorative diamond. Compared with using resin hot melt adhesive powder to bond and fix the glass ball to the top of the clamp needle of the grinding and cutting machine, the operation of bonding and fixing each glass strip to the ends of several clamp needles 8 located on the same clamp seat 9 on the grinding and cutting machine is simpler. After the same glass strip is cut into several decorative diamond blanks, the crown facets and the small top planes are directly cut out at the end of the decorative diamond blank away from the clamp needle 8 to form a decorative diamond rough product. There is no need to turn over and adjust the decorative diamond blank in the middle. The cutting operation process of the crown facets is fully automated. At the same time, the cutting steps of the large bottom plane and the small bottom plane on the decorative diamond blank are omitted, which greatly reduces the amount of manual labor and significantly shortens the cutting time of the decorative diamond blank into the decorative diamond rough product.

[0105] In step S5, for the rough decorative diamonds cut from the glass strip without the hot melt adhesive layer 4, the clamp needle 8 on the grinding and cutting machine is directly heated until the loading hot melt adhesive is softened, the rough decorative diamonds are brushed off from the clamp needle 8 by a roller brush, and the residual loading hot melt adhesive on the large bottom surface of the rough decorative diamonds is washed away with a weak alkaline cleaning liquid, and the flat bottom diamonds are obtained after drying and quality inspection;

[0106] For the rough decorative diamonds cut from the adhesive glass strip with a hot melt adhesive layer 4 provided on the flat glass 1 and no substrate 7 provided, the clamp needle 8 on the diamond grinding and cutting machine is directly heated until the hot melt adhesive layer 4 softens, and the rough hot diamonds are brushed off the clamp needle 8 with a roller brush, and the defective products are removed through quality inspection to obtain the finished hot diamonds;

[0107] In order to ensure the integrity of the hot melt adhesive layer 4 on the finished hot diamond products and improve the qualified rate of the finished hot diamond products, a substrate plate 7 can also be bonded to one side of the hot melt adhesive layer 4 of the adhesive flat glass plate. For the rough hot diamond products cut from the adhesive glass strip provided with the substrate plate 7, the clamp needle 8 on the grinding and cutting machine is heated until the feeding hot melt adhesive layer on the substrate plate 7 is softened, and the rough decorative diamond products are brushed off the clamp needle 8 by a roller brush. Then, the rough hot diamond products are placed in clean water, and the substrate plate 7 can be peeled off after the water-soluble film layer 5 is dissolved. This solution helps to ensure that the hot melt adhesive layer 4 on the large bottom plane of the finished hot diamond products is not damaged, and helps to improve the qualified rate of the finished hot diamond products.

[0108] A decorative diamond production method of the present invention uses flat glass as a raw material. Compared with the production and processing method of traditional decorative diamonds, the processing steps of a single-pointed glass ball and a bare diamond intermediate are omitted, thereby eliminating part of the equipment used in the processing steps of the single-pointed glass ball and the bare diamond intermediate, and reducing the amount of manual labor, which helps to simplify the production process steps of decorative diamonds, that is, helps to reduce equipment investment costs and manual labor costs; during the processing, only the crown facets need to be cut from the decorative diamond blank, and the large bottom plane and the small top plane are naturally formed, and the decorative diamond blank will not shift during the process of cutting the crown facets. Compared with the traditional method of cutting and processing decorative diamonds using glass balls as raw materials, the geometric size accuracy of the finished decorative diamond is significantly improved, which helps to greatly improve the finished product quality and product qualification rate of the installed diamonds.

[0109] Compared with the traditional production and processing method of decorative diamonds, the production method of the decorative diamond of the present invention uses glass balls as raw materials. No pressing mold is required in the production and processing of flat glass. The decorative diamond has higher purity, no bubbles, uniform thickness, small tolerance, and is easy to purchase. The texture of the processed decorative diamond product itself is greatly improved, the visual reflective effect is better, and the overall quality is better.

[0110] The present invention discloses a method for producing decorative diamonds. As flat glass is used as a raw material, a reflective film, or a reflective film / hot-melt adhesive layer, or a reflective film / hot-melt adhesive layer / substrate plate is firstly arranged on one side of the flat glass, and then the flat glass is cut into glass strips, decorative diamond blanks, and decorative diamond finished products in sequence. During the processing, it is not necessary to cut out a bare diamond intermediate, and the steps of arranging the bare diamond intermediate on the bottom plate and spraying a water-soluble adhesive film before the processes of coating a metal film, spraying a paint film, and laying a hot-melt adhesive layer are omitted, thereby avoiding secondary pollution caused by the arrangement process of bare diamonds on the bottom plate, and helping to greatly improve the reflective film on the flat glass. The uniformity of film formation, adhesion and reflective effect on one side are improved, and the occurrence of pinhole phenomenon is avoided, which helps to greatly improve the production and processing efficiency of decorative diamonds; the step of placing the rough decorative diamonds in a drum for cleaning to remove the water-soluble adhesive film on the waistline and facets is omitted, and the rough decorative diamonds adhered to the substrate plate only need to be placed in clean water to dissolve the water-soluble film layer and then peel off the substrate plate, thereby avoiding the damage to the metal film or hot-melt adhesive layer on the decorative diamond during the rolling washing process and the scratching of the crown facets of the decorative diamond during the violent rolling washing process, which helps to greatly improve the apparent quality and yield rate of decorative diamonds, with high economic benefits and good environmental protection.

[0111] The above is only 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 technical 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 method for producing decorative diamonds, characterized in that: The steps are as follows: S1: clean and dry the flat glass for later use; S2: applying a reflective film on one side of the cleaned flat glass; S3: Cut the flat glass with a reflective film on one side into a plurality of glass strips, and the width of the glass strips is greater than the outer contour of the large bottom plane of the decorative drill; S4: bonding and fixing the side of the glass strip with the reflective film to the top of several clamp needles on the diamond grinding and cutting machine, firstly cutting the glass strip into several decorative diamond blanks bonded to the top of the clamp needles one by one, and the outer contour size of the outer peripheral side of the decorative diamond blank is slightly larger than the outer contour size of the large bottom plane of the decorative diamond, then grinding the outer peripheral side of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane of the decorative diamond, and finally cutting the crown facet of the end of the decorative diamond blank away from the clamp needle to form a decorative diamond with a small top plane; S5: The decorative diamond is removed from the fixture needle, and the finished decorative diamond is obtained after quality inspection.

2. The method for producing decorative diamonds according to claim 1, characterized in that: The specific operation of step S4 is to fix the side surface of each glass strip with the reflective film to the top of several clamp needles located in the same row or column on the grinding and cutting machine by feeding hot melt adhesive, cut the glass strip bonded and fixed to the top of the clamp needle into several decorative diamond blanks bonded to the top of the clamp needle in a one-to-one correspondence by a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane on the decorative diamond by the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet of the end of the decorative diamond blank bonded to the top of the clamp needle away from the clamp needle by the facet cutting roller or facet cutting grinding disc on the grinding and cutting machine to form a rough decorative diamond with a small top plane, and then grind and polish the rough decorative diamond by the polishing roller or polishing disc on the grinding and cutting machine to form a decorative diamond; The specific operation of step S5 is to heat the clamp needle on the grinding and cutting machine until the loading hot melt adhesive is softened, use a roller brush to brush the rough decorative diamond off the clamp needle, clean and remove the loading hot melt adhesive remaining on the bottom surface of the rough decorative diamond and dry it, and obtain the finished decorative diamond after quality inspection and removal of unqualified products.

3. The method for producing decorative diamonds according to claim 2, characterized in that: In the step S5, the hot melt adhesive used is a resin-type hot melt adhesive; in the step S5, the solvent used to clean and remove the residual hot melt adhesive on the large bottom surface of the rough decorative diamond is a weak alkaline cleaning solution.

4. The method for producing decorative diamonds according to claim 3, characterized in that: The weak alkaline cleaning solution used is a sodium carbonate aqueous solution or a sodium hydroxide aqueous solution, and the pH of the weak alkaline cleaning solution is 8-9.

5. The method for producing decorative diamonds according to claim 1, characterized in that: The step S2 further includes laying a hot melt adhesive layer on the reflective film on one side of the flat glass.

6. The method for producing decorative diamonds according to claim 5, characterized in that: The specific operation of laying the hot melt adhesive layer in step S2 is: spreading a layer of hot melt adhesive powder on the reflective film of the flat glass, and then heating the flat glass to form the hot melt adhesive layer on the reflective film, and the thickness of the hot melt adhesive layer is 0.1-0.3 mm.

7. The method for producing decorative diamonds according to claim 5, characterized in that: The specific operation of step S4 is to bond and fix one side of each glass strip with the reflective film to the top of several clamp needles in the same row or column on the grinding and cutting machine through the hot melt adhesive layer, cut the glass strip bonded and fixed to the top of the clamp needle into several decorative diamond blanks bonded to the top of the clamp needle in a one-to-one correspondence through a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane on the decorative diamond through the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet of the end of the decorative diamond blank bonded to the top of the clamp needle away from the clamp needle through the faceting cutting roller or faceting cutting grinding disc on the grinding and cutting machine to form a rough decorative diamond with a small top plane, and then grind and polish the rough decorative diamond using the polishing roller or polishing disc on the grinding and cutting machine to form a decorative diamond; The specific operation of step S5 is to heat the fixture needle on the grinding and cutting machine until the hot melt adhesive layer softens, use a roller brush to brush the decorative diamond off the fixture needle, and obtain the finished decorative diamond after quality inspection to remove unqualified products.

8. The method for producing decorative diamonds according to claim 5, characterized in that: In the step S2, a water-soluble film layer, an auxiliary hot-melt adhesive layer and a substrate plate are sequentially bonded to the hot-melt adhesive layer of the flat glass, and the substrate plate is located on a side away from the hot-melt adhesive layer on the flat glass; The specific operation of step S4 is to bond and fix each glass strip to the top of a plurality of fixture pins in the same row or column on the grinding and cutting machine through the feeding hot melt adhesive arranged between the substrate plate and the top of the fixture pin, cut the glass strip bonded and fixed to the top of the fixture pin into a plurality of decorative diamond blanks bonded to the top of the fixture pin in a one-to-one correspondence manner through a pair of correspondingly arranged roller cutters on the grinding and cutting machine, grind the outer peripheral side profile of the decorative diamond blank to be consistent with the outer contour size of the large bottom plane on the decorative diamond through the outer peripheral surface grinding roller on the grinding and cutting machine, cut the crown facet of the end of the decorative diamond blank bonded to the top of the fixture pin away from the fixture pin through the faceting cutting roller or faceting cutting grinding disc on the grinding and cutting machine to form a rough decorative diamond with a small top plane, and then grind and polish the rough decorative diamond using the polishing roller or polishing disc on the grinding and cutting machine to form a decorative diamond; The specific operation of step S5 is to heat the clamp needle on the grinding and cutting machine until the hot melt adhesive is softened, use a roller brush to brush the decorative diamond off the clamp needle, and then place the decorative diamond in clean water to dissolve the water-soluble film layer, remove the substrate plate and dry it, and obtain the finished decorative diamond after quality inspection and removal of unqualified products.

9. The method for producing a decorative diamond according to claim 8, characterized in that: The specific operation of bonding the backing plate in step S2 is to sequentially lay a layer of water-soluble film, an auxiliary hot-melt adhesive film and a layer of substrate plate on the hot-melt adhesive layer of the flat glass, and use a hot pressing machine to hot-press the backing plate, the auxiliary hot-melt adhesive film and the water-soluble film together with the hot-melt adhesive layer of the flat glass, wherein the water-soluble film forms a water-soluble film layer, the auxiliary hot-melt adhesive film forms an auxiliary hot-melt adhesive layer, and the substrate plate is a thin plate.

10. The method for producing decorative diamonds according to claim 1, characterized in that: The reflective film comprises a metal film and a paint layer, and the metal film is located between the flat glass and the paint layer; or, the reflective film is a reflective paint film.

11. The method for producing a decorative diamond according to claim 10, characterized in that: The metal film is an aluminum film layer or a silver film layer.

12. The method for producing a decorative diamond according to claim 11, characterized in that: The specific operation of step S2 is to place the cleaned flat glass in a vacuum coating machine, coat a metal film on one side of the flat glass in a vacuum environment, and then coat a paint film on the metal film of the flat glass by spraying or pouring, and form a paint layer after the paint film dries.

13. The method for producing decorative diamonds according to any one of claims 2, 7 and 8, characterized in that: The outer peripheral surfaces of the pair of roller cutters, the outer peripheral grinding roller, the faceting cutting roller and the faceting cutting grinding disc are all made of electroplated diamond material, and the outer peripheral surfaces of the pair of roller cutters are provided with a plurality of annular grooves for cutting the glass strip into a plurality of decorative diamond blanks at intervals along the axial length direction thereof; In the step S3, the width of the glass strip is greater than the outer contour of the large bottom plane of the decorative drill by 0.2 to 1 mm.

14. A decorative diamond, characterized in that: The decorative diamond is prepared by the decorative diamond production method according to any one of claims 1 to 13.

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