Process for realizing standard gram weight manufacturing of precious metal ornament

Abstract

The invention discloses a technology for achieving standard gram weight manufacturing of precious metal ornaments. The technology comprises the following steps that 1, material preparation is conducted, specifically, whether the surface of a material is clean or not and whether the thickness meets the standard or not are checked; it is guaranteed that each cut product is complete and free of defects; the fire is uniform, and the materials are not dirtied or melted; a closed oil pressure mold is adopted, firstly, the mold is cleaned up and checked, then the mold is pressed through oil pressure, and then the surface of an obtained product is checked; 3, edge cutting is conducted, specifically, redundant parts are cut off, cutting deviation, cutting insufficiency and deformation are prevented, the sand bottom is kept intact, and dislocation is avoided during grooving; 4, punching is conducted, specifically, punching is conducted in the needed position, and it is guaranteed that the hole position is positive and the size is moderate; and 5, trimming is conducted, specifically, excessive burrs are scraped cleanly, and it is guaranteed that the surface of the product is smooth and flat, does not scrape hands and is even in line. The process is accurate, operation is easy, it can be guaranteed that the weight of each single product of the same product is consistent, and the standard gram integer can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of standard gram weight production of precious metal ornaments, and in particular to a process for realizing standard gram weight production of precious metal ornaments. Background Art

[0002] Nowadays, there are various processing and manufacturing technologies for gold jewelry, resulting in different weights for each single product. Even the weights of the same batch of the same product produced under the same conditions and environment vary greatly, and the weights are followed by many decimal places after the standard gram integer, which causes great inconvenience in the subsequent processing and classification of the same product, increases the workload of recording, and is prone to errors. For example, the gold jewelry currently sold on the market often finds that the appearance, size and marked materials of the same jewelry are the same, but the weights vary greatly, and some weights are followed by many decimal places after the standard gram integer. For example, in a gold jewelry counter, a ring is displayed. Under the same appearance and size, the weights of several single products are marked as 8.354 grams, 8.674 grams, 8.253 grams, 8.732 grams, 8.500 grams, etc. When there are many varieties of gold jewelry in the counter, it will cause inconvenience to the storage record and display, and sometimes the weight of the jewelry will be confused.

[0003] Therefore, there is an urgent need for a processing and manufacturing technology that can achieve the same product in different batches to always keep the weight of each single product consistent, or to achieve an integer number of grams, to solve the problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a process for achieving standard gram weight production of precious metal jewelry, which has precise procedures and is easy to operate, can ensure that the weight of each single item of the same product is consistent, and can achieve standard gram integers, thereby solving the above-mentioned problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a process for achieving standard weight production of precious metal ornaments, the process comprising the following steps:

[0007] Step 1, material preparation: Check whether the surface of the material is clean and whether the thickness meets the standard; ensure that each product is complete and not damaged; burn the fire evenly, do not dirty the material, and do not melt the material;

[0008] Step 2, pressing: Use a closed hydraulic mold, clean and inspect the mold first, and then use a hydraulic tablet press to press the tablet. The thickness of each tablet is less than or equal to 40mm. If gold burst occurs, stop processing and then check the surface of the product.

[0009] Step 3, trimming: cut off the excess part to prevent deviation, undercutting and deformation, and keep the sand bottom intact, and avoid misalignment when grooving;

[0010] Step 4, punching: punch holes where the product needs to be, making sure the holes are in the correct position and of the right size;

[0011] Step 5, trimming: The scraper should be at a 15° angle to the product surface, and the edge of the scraper should be scraped clean to ensure that the product surface is smooth, flat, non-scratching, and the lines are even, so that the weight of each single product of the same product can be consistent and can be achieved as a standard integer.

[0012] Furthermore, in step 1, first check whether there are impurities on the surface of the raw material, no borax should be present, the surface of the tablet press roller is clean and free of other metals; when pressing the parts, keep the surface clean, flat, not bent, and the thickness meets the standard.

[0013] Furthermore, in step 1, the materials are placed on fire bricks or in a fire bowl during burning, and the fire bricks or the fire bowl are kept clean to avoid dirtying the materials; the materials are burned evenly without melting; and the semi-finished products are tempered evenly.

[0014] Furthermore, in step 2, the closed hydraulic mold is a closed mold in which both the upper mold and the lower mold are complete and have no openings.

[0015] Furthermore, in step 2, the mold is cleaned first during oil pressure, and it is checked whether every corner and back are fully pressed, whether the thickness meets the requirements, and whether the weight meets the standards; the surface of the product after pressing remains clean, without other impurities and stains, and the surface of the product is fully pressed during oil pressure, all patterns and corners are complete, and there are no cracks in the mold or core.

[0016] Furthermore, in step 3, the mold should be installed correctly to avoid cutting off-center, cutting less, or deforming when cutting off the excess part, and to keep the sand bottom intact without any scratches.

[0017] Furthermore, in step 3, the ring-like jewelry is not misplaced when the groove is punched, but is punched on the wider side, and is not too long or too short, but is punched at two-thirds of the tail of the ring, and the depth of the punch is adjusted to be moderate when the groove is punched.

[0018] Furthermore, in step 5, when trimming, ensure that there is no broken metal on the rubber pad underneath, and the scraped edge lines are smooth and even without any sharp edges.

[0019] Furthermore, in step 5, when severe batching occurs, the mold is trimmed to ensure that the product is clean and complete.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are:

[0021] The process for realizing the standard gram weight production of precious metal jewelry of the present invention is mainly aimed at single standard weight products, and can realize batch production with the maximum yield. The process is accurate and easy to operate. In the processing and production of gold jewelry, the weight of each single product of the same product can be guaranteed to be consistent and the standard gram integer can be achieved.

[0022] The present invention changes the traditional manufacturing process mold, and independently designs a special mold corresponding to the closed hydraulic technology; by adopting a closed hydraulic mold instead of the existing open hydraulic mold, the density and surface smoothness of the gold jewelry can be better controlled, laying a key foundation for the high-standard processing and improvement of the product in the subsequent corresponding process. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are further described below.

[0024] The process for achieving the standard weight production of precious metal ornaments of the present invention comprises the following steps:

[0025] Step 1, material preparation: Check whether the surface of the material is clean and whether the thickness meets the standard; ensure that each product is complete and not damaged; burn evenly, do not dirty the material, and do not melt the material; preferably, in step 1, you should be familiar with the operation and maintenance knowledge of various machines and equipment, pay attention to production safety, first check whether there are impurities on the surface of the raw materials, no borax, the surface of the tablet press roller is clean, and there is no other metal; when pressing, keep the surface clean, flat, not bent, and the thickness meets the standard. In addition, when burning, put it on the fire brick or in the fire bowl, and keep the fire brick or fire bowl clean, do not dirty the material; burn evenly, do not melt the material; the fired semi-finished product is tempered evenly.

[0026] Step 2, pressing: Use a closed hydraulic mold, clean and inspect the mold first, then use the hydraulic tablet press to press the mold, and then check the surface of the product; when pressing, the thickness of each tablet is less than or equal to 40mm, and stop processing if gold burst occurs. Among them, the closed hydraulic mold is a closed mold with complete upper and lower molds and no openings. In addition, clean the mold first during oil pressure, check whether every corner and back are fully pressed, whether the thickness meets the requirements, and whether the weight meets the standards; the surface of the product after pressing remains clean, without other impurities and stains, and the surface of the product is fully pressed during oil pressure, all patterns and corners are complete, and there are no cracks in the mold or core.

[0027] By adopting closed hydraulic molds to replace the existing open hydraulic molds with openings on the molds, the density and surface smoothness of gold jewelry can be better controlled, and the corresponding hydraulic press supporting equipment and core parameters can be matched, thereby completing more scientific modern production and mass manufacturing.

[0028] Step 3, trimming: cut off the excess parts to prevent cutting off, cutting less, deformation, and keep the sand bottom intact, and do not misalign when grooving; Among them, the mold should be installed correctly, so as to avoid cutting off, cutting less, deformation when cutting off the excess parts, and keep the sand bottom intact without any scratches.

[0029] In step 3, the grooves of ring-like jewelry are not misplaced when being punched, but are punched on the wider side, and are not too long or too short, but are punched at two-thirds of the end of the ring. The depth of the punch is adjusted to a moderate level when punching.

[0030] Step 4, punching: punch holes where the product needs to be, making sure the holes are in the correct position and of the right size;

[0031] Step 5, trimming: scrape the edge of the scraper clean to ensure that the product surface is smooth, flat, non-scratching, and the lines are even, so that the weight of each single product of the same product is consistent and can be a standard integer. When trimming, ensure that there is no broken metal on the rubber pad underneath, the scraper is at an angle of 15° to the product surface, and the scraped edge lines are smooth and even without the scraper edge.

[0032] Specifically, when serious flash occurs, the mold is trimmed to ensure that the product is clean and complete. Among them, the flash is also called flash, overflow, burr, etc. It is not a part of the mold design requirement, that is, an extra useless thing.

[0033] When the product is processed by punching and shearing, the process is: first prepare the material, then punch it through a hydraulic tablet press, and finally punch it.

[0034] The following is a further description of the process for achieving standard weight production of precious metal jewelry provided by the present invention in conjunction with the embodiments.

[0035] Example 1

[0036] The process for achieving the standard weight production of precious metal jewelry in this embodiment 1, taking the production of rings as an example, the process includes the following steps:

[0037] Step 1: Prepare the materials: Check whether the surface of the materials is clean and whether the thickness meets the standards; ensure that each product is complete and without defects; burn the materials evenly without dirtying them or melting them.

[0038] During this process, you need to be familiar with the operation and maintenance knowledge of various machines and equipment and pay attention to production safety.

[0039] Before pressing, check the surface of the gold bar for impurities and no borax. The surface of the roller of the tablet press should be clean and free of other metals.

[0040] When pressing parts, the surface must be kept clean, flat, and not bent, and the thickness must be standard; the thickness of each pressing should not exceed 40mm, and processing should be stopped immediately if gold burst occurs.

[0041] Cutting must ensure that each product is complete and without any damage.

[0042] When burning, place the materials on fire bricks or in fire bowls. The fire bricks or fire bowls must be kept clean, and the materials must not be dirty. The fire must be even, and the materials must not be melted. The semi-finished products must be tempered evenly.

[0043] Step 2: Pressing: Use a closed hydraulic mold, clean and inspect the mold first, then press the mold using hydraulic pressure, and then inspect the surface of the resulting product.

[0044] The closed hydraulic mold is a closed mold with both the upper mold and the lower mold being complete and without openings.

[0045] When pressing with oil, clean the mold first, check whether every corner and back are fully pressed, and whether the thickness meets the requirements; when pressing rings, the weight standards must be met.

[0046] The ring surface should be kept clean after pressing, without other impurities and stains; the ring surface should be fully pressed, that is, all patterns and corners are complete; the ring surface should not have cracks from the ring mold or mold core.

[0047] Step 3, trimming: cut off the excess parts to prevent off-center cutting, insufficient cutting, and deformation, and keep the sand bottom intact so that it does not misalign when grooving.

[0048] When trimming, the mold should be straight to prevent off-center cutting, undercutting, deformation, etc. The sand bottom should be kept intact without any scratches.

[0049] When making grooves for rings, the grooves should not be misplaced and should be made on the wider side. The grooves should not be too long or too short and should be about two-thirds of the end of the ring. The depth of the punch should be adjusted to a moderate level when making grooves.

[0050] Step 4, punching: punch holes where the product needs to be, making sure the holes are in the correct position and of appropriate size.

[0051] Step 5, trimming: Make sure the edge of the scissors is scraped cleanly, and there should be no scratches on the back and sides; after scraping, the lines should be even.

[0052] When trimming, make sure there is no broken metal on the rubber pad underneath to avoid scratching the product surface. The scraper should be at a 15° angle to the product surface, and the scraped edge should be even, the lines should be smooth, and there should be no sharp edges.

[0053] When severe batching occurs, the mold needs to be trimmed to ensure that the product is clean and complete.

[0054] Example 2

[0055] The process for achieving the standard weight production of precious metal accessories in this embodiment 2, taking the production of hangtags as an example, the process includes the following steps:

[0056] Step 1: Prepare the materials: Check whether the surface of the materials is clean and whether the thickness meets the standards; ensure that each product is complete and without defects; burn the materials evenly without dirtying them or melting them.

[0057] Step 2: Pressing: Use a closed hydraulic mold, clean and inspect the mold first, then press the mold using hydraulic pressure, and then inspect the surface of the resulting product.

[0058] Step 3, trimming: cut off the excess parts to prevent off-center cutting, insufficient cutting, and deformation, and keep the sand bottom intact so that it does not misalign when grooving.

[0059] Step 4, punching: punch holes where the product needs to be, making sure the holes are in the correct position and of appropriate size.

[0060] Step 5, trimming: scrape the edge of the brush clean to ensure that the surface of the product is smooth, flat, non-scratching, and the lines are even.

[0061] Finally, install the buckle ring on the hole of the tag and complete the welding ring.

[0062] Among them, when pressing polished tablets, the tablet press must be wiped clean, and the pressed tablets must not have impurities or stains on them; when pressing tablets with a mirror tablet press, the machine (roller) and material must be wiped clean, and the pressed tablets must be bright and clean without impurities on them.

[0063] It should be noted that when cutting the material, the mold should be wiped clean and the cut material should be kept bright and clean, without oil stains, fingerprints, etc. on the surface.

[0064] When polishing, wipe the mold clean first and be careful. Move the mold slowly in the palm of your left hand. The arc of the velvet piece controlled by your right hand should not be too large. The mirror surface should be bright after polishing and should not be sanded.

[0065] The extruded product has a mirror-bright surface and no bright spots on the sand surface. It must be well protected and products with special requirements must be produced according to orders.

[0066] When cutting the edges, be careful not to cut off-center, protect the brightness of the mirror surface, do not touch the sand surface, and place the product with care. Special products must also have a protective layer on the back.

[0067] When trimming and scraping the edges, there should be no gold fragments on the rubber pad to avoid scratching the mirror surface and sand surface. When scraping, the scraper should be at a 15° angle to the tag surface. The scraped edge should be even and the lines should be smooth. There should be no sharp edges and the sharp edges should not be pressed to the side. Products should not be stacked, but should be spread out and handled with care.

[0068] When decorating the car, pay attention to check whether there is any damage to the car (patterning damage), and then trim the front of the car after decorating.

[0069] The buckle ring interface should be tight and not deformed. The product should be handled with care to protect the mirror and sand surfaces.

[0070] When welding the ring, the product should be placed gently on the welding plate. The interface cannot be welded down and there should be no grooves after welding. It should be smooth and round. After welding, it should be spread out and placed gently to protect the mirror surface and sand surface.

[0071] The processed products must meet the following quality standards:

[0072] 1. When preparing materials, the materials should be clean and the mirror surface should be kept in good condition;

[0073] 2. The punched product should not have serious cutting edges (if there are cutting edges, the mold should be repaired). The product should be clean and complete, the oil pressure should be full, the mirror surface should be bright, and there should be no bright marks on the sand bottom;

[0074] 3. The edge cut should not be too big and should be cut straight;

[0075] 4. The hole size should be moderate and the hole position should be correct;

[0076] 5. When scraping and trimming, pay attention to scraping the edge of the brush cleanly. There should be no scratching on the back and sides. After scraping, the lines should be even.

[0077] 6. The surface of flat punching products such as negatives and hanging flowers should be flat without missing corners, and the periphery of the hollow hanging nozzle should be equal;

[0078] 7. The buckle ring should be fastened tightly without deformation. The weld ring should not be too large. Try to keep the arc of the circle, and there should be no black marks after welding.

[0079] 8. After hammering, the thickness of the needle should be uniform, without any sharp edges, and should not be too deep or too shallow, and should be equal to the angle of the finished product;

[0080] 9. When rolling earrings, make sure they are rolled in a circle, the center line should be accurate, the two sides should be parallel, and the depth of pressure should be moderate, not too tight or too deep;

[0081] 10. The shape of the hollow and hollow hanging flower products must conform to the shape of the mold, the surface should be full, the surface should not be bumpy, the cutting edge should be straight, and the bottom edge should be even and flat;

[0082] 11. The beads must be round, without any traces of the mold or gaps;

[0083] 12. When punching and shearing the continuous forming hanging flowers or hanging nozzles, the material must be pulled into place to avoid deformation and missing corners of the product;

[0084] 13. Pay attention to protecting the mirror and sand surface of the product. The printing should be clear and of moderate depth.

[0085] The process steps for realizing the standard gram weight production of precious metal jewelry of the present invention are accurate and easy to operate. The processing and manufacturing technology can achieve the same product in different batches, always keeping the weight of each single product consistent, or reaching an integer gram. For a single standard weight product, batch production with the maximum yield can be achieved.

[0086] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A process for achieving standard weight production of precious metal jewelry, characterized in that: The process comprises the following steps: Step 1, material preparation: Check whether the surface of the material is clean and whether the thickness meets the standard; ensure that each product is complete and not damaged; burn the fire evenly, do not dirty the material, and do not melt the material; Step 2, pressing: Use a closed hydraulic mold, clean and inspect the mold first, and then use a hydraulic tablet press to press the tablet. The thickness of each tablet is less than or equal to 40mm. If gold burst occurs, stop processing and then check the surface of the product. Step 3, trimming: cut off the excess part to prevent deviation, undercutting and deformation, and keep the sand bottom intact, and avoid misalignment when grooving; Step 4, punching: punch holes where the product needs to be, making sure the holes are in the correct position and of the right size; Step 5, trimming: The scraper should be at a 15° angle to the product surface, and the edge of the scraper should be scraped clean to ensure that the product surface is smooth, flat, non-scratching, and the lines are even, so that the weight of each single product of the same product can be consistent and can be achieved as a standard integer.

2. The process for achieving standard weight production of precious metal jewelry as claimed in claim 1, characterized in that: In the step 1, first check whether there are impurities on the surface of the raw material, no borax should be present, the surface of the roller of the tablet press is clean and free of other metals; when pressing the pieces, keep the surface clean, flat, not bent, and the thickness meets the standard.

3. The process for achieving standard weight production of precious metal jewelry as claimed in claim 2, characterized in that: In the step 1, the materials are placed on fire bricks or in a fire bowl during burning, and the fire bricks or the fire bowl are kept clean to avoid dirtying the materials; the materials are burned evenly without melting; and the burned semi-finished products are tempered evenly.

4. The process for achieving standard weight production of precious metal jewelry as claimed in claim 1, characterized in that: In step 2, the closed hydraulic mold is a closed mold in which both the upper mold and the lower mold are complete and have no openings.

5. The process for achieving standard weight production of precious metal jewelry as claimed in claim 4, characterized in that: In the step 2, the mold is first cleaned during oil pressure, and each corner and back is checked to see whether it is fully pressed, whether the thickness meets the requirements, and whether the weight meets the standards; the surface of the product after pressing remains clean, without other impurities or stains, and the surface of the product is fully pressed during oil pressure, all patterns and corners are complete, and there are no cracks in the mold or core.

6. The process for achieving standard weight production of precious metal jewelry according to claim 1, characterized in that: In step 3, the mold should be installed correctly to avoid cutting off-center, cutting less, and deformation when cutting off the excess part, and to keep the sand bottom intact without any scratches.

7. The process for achieving standard weight production of precious metal jewelry as claimed in claim 6, characterized in that: In step 3, the ring-like jewelry is not misplaced when the groove is punched, but is punched on the wider side, and is not too long or too short, but is punched at two-thirds of the ring tail. The depth of the punch is adjusted to a moderate level when the groove is punched.

8. The process for achieving standard weight production of precious metal jewelry as claimed in claim 1, characterized in that: In step 5, when trimming, ensure that there is no broken metal on the rubber pad underneath, and the scraped edge lines are smooth and even without any sharp edges.

9. The process for achieving standard weight production of precious metal jewelry as claimed in claim 8, characterized in that: In step 5, when severe batching occurs, the mold is trimmed to ensure that the product is clean and complete.