TWI830058B - Manufacturing method of gas copper burner and sand core inner mold used for manufacturing gas copper burner - Google Patents

Abstract

This invention uses copper gaskets to be bonded to the positioning grooves at the base of the sand core inner mold first, so that the copper gaskets can be clamped and supported by the fixed grooves at the predetermined positions of the metal upper and lower molds to the between the positioning grooves of the inner sand core mold, so that the inner sand core mold can be suspended and fixed at the predetermined position of the upper and lower metal molds, and then through (A) material preparation processing; (B) bonding processing; (C) spraying processing ; (D) Inserting and closing mold processing; (E) Pouring and pressurizing processing; (F) Cooling and sampling processing; (G) Vibration cleaning processing; (H) Filling processing; (I) Polishing processing; (J) Hole grooves After processing; (K) smoothing processing; (L) finished product and other steps, a finished copper burner head with a gas chamber, a mixing tube and a flame hole can be completed.

Description

Manufacturing method of gas copper burner and sand core inner mold used for manufacturing gas copper burner

The invention relates to a method for manufacturing a gas copper burner; in particular, it relates to a method for manufacturing a gas copper burner that can improve yield and productivity, and a sand core inner mold used for manufacturing the gas copper burner.

According to the customary manufacturing method of gas copper burner, the method is as follows:

(A) Material preparation and processing: Purchase or make your own sand core inner mold of predetermined shape and size required for the gas copper burner head, and prepare the upper and lower soil and sand molds for housing the sand core inner mold; among them, the sand core inner mold It includes a ring base and a pipe connected to the ring base, and a clamping section is formed at the end of the pipe; in addition, the upper and lower molds of soil and sand are respectively formed with concave predetermined positions of predetermined shapes and sizes;

(B) Place pads for the first time: Place a plurality of pads equidistantly distributed on the bottom surface of the inner wall of the predetermined position of the soil-sand lower mold, and the pads are preferably Styrofoam;

(C) Place the sand core inner mold: Place the top plane of the ring base of the sand core inner mold gently downwards above the pad and into the predetermined position of the soil and sand lower mold. At the same time, The clamping section at the other end of the sand core inner mold can be located at the other end of the predetermined position of the soil and sand lower mold;

(D) Place the pads again: Place a plurality of pads at equal intervals on the bottom plane of the ring base of the sand core inner mold;

(E) Close the mold: cover the soil and sand upper mold with the soil and sand lower mold, and form the sand core inner mold that can be suspended above and below the soil and sand through the pads at its top and bottom planes. between the predetermined positions of the mold;

(F) Pouring process: Pour the molten copper alloy liquid directly into the pouring port of the soil and sand upper mold, so that the molten copper alloy liquid directly flows into the predetermined positions filled with the soil and sand upper and lower molds, and the sand The inner side of the inner mold and the pouring opening;

(G) Cooling sampling process: When the molten copper alloy liquid is cooled to nearly normal temperature, the solidified copper alloy material can be directly clamped from the pouring port and then pulled out with force, so that it can be separated from the soil and sand. Lower the mold to obtain a preliminary embryonic prototype with an inner mold covering the sand core;

(H) Vibration cleaning process: The sand core inner mold in the preliminary embryo model is crushed and taken out by vibration, and a preliminary embryo furnace head with a hollow air chamber is formed;

(1) Hole processing: Use drilling, turning or rolling groove technology to process the top surface of the preliminary furnace head so that the preliminary furnace head has a flame hole;

(J) Smoothing processing: Carry out turning (milling) operations on the surface of the preliminary furnace head that already has a flame hole, so as to make the surface of the preliminary furnace head more refined;

(K) Finished product: Complete a finished copper stove head with an air chamber and a flame hole.

Although the above creation can achieve its creative purpose, the following shortcomings will occur during the manufacturing process:

Since the upper and lower earth-sand molds are customarily produced by master-level personnel, in particular, how to evenly distribute several of the pads one by one to the predetermined positions of the earth-sand lower mold for the first time? How to place the top plane of the sand core inner mold above the first pad so that the sand core inner mold can be evenly positioned within the predetermined position of the soil and sand lower mold? How to evenly distribute several pads one by one on the bottom plane of the sand core inner mold? Nowadays, it is necessary to rely on masters with good experience to arrange production. In this way, not only is its production capacity limited due to too many times of placing work one by one, so that it cannot greatly increase its output, but at the same time , the salary of a master with good experience is relatively high, and the salary of a craftsman with good experience is relatively high. As a result, the unit price of its output is relatively high, and its lack of market competitiveness is a major problem.

As mentioned above, in order to solve the problem of difficulty in hiring masters with good experience, the industry often hires a large number of foreign workers for training. However, in the process of training, the yield rate will often decline significantly and the production capacity will be greatly reduced. Another big problem.

As mentioned above, when the poured hot molten copper alloy liquid flows and touches the Styrofoam cushion block, the cushion block will be melted quickly, and the flowing hot molten copper alloy liquid will push the inside of the sand core. The mold moves at the predetermined position of the upper and lower molds of soil and sand, so that the inner mold of the sand core will deflect and touch the inner wall surface of the predetermined position of the upper and lower molds of soil and sand. As a result, the breakage rate of the furnace head produced will be greatly increased. Another major problem for it is to greatly reduce its production capacity.

Therefore, how to develop a device that can reduce over-reliance on master-level personnel, reduce costs, and improve yield, production capacity, and competitiveness is a technical issue that industry players currently need to address as a priority.

The main content of the method for manufacturing a gas copper burner and the sand core inner mold for manufacturing a gas copper burner of the present invention is to provide a method of first bonding copper gaskets to the positioning grooves at the base of the sand core inner mold. So that the copper gasket can be clamped and supported between the fixed groove at the predetermined position of the metal upper and lower molds and the positioning groove of the sand core inner mold, so that the sand core inner mold can be suspended and fixed on the metal upper and lower molds. The predetermined position of the mold is then processed through (A) material preparation processing; (B) bonding processing; (C) spraying processing; (D) placement and closing mold processing; (E) pouring and pressurizing processing; (F) cooling sampling processing ; (G) Vibration cleaning processing; (H) Filling processing; (I) Polishing processing; (J) Hole and groove processing; (K) Smoothing processing; (L) Finished product, etc., can be completed with an air chamber, The finished copper burner head of the mixing tube and flame hole is not only able to hire non-professional personnel to replace the professional In order to greatly reduce the over-reliance on master-level personnel and reduce their labor costs, it can also reduce the technical bottleneck of this sunset industry, so that new personnel can be re-injected to activate or extend the life of the industry, and at the same time , which can also greatly increase production capacity and yield, thereby greatly improving its market competitiveness, is a progressive proposition.

」形狀、或呈凸字狀；(C)噴塗加工：打開金屬上、下模後，將脫模劑均勻噴塗於該金屬上、下模之預定位置處；而該金屬上、下模之預定位置的內壁面處設有定凹槽，且該定凹槽係對應於該砂心內模之定位槽，以供已組設於該砂心內模之定位槽處的該銅墊片另端能容置限位之用；(D)置入關模加工：將已黏合有該銅墊片的該砂心內模置入於該金屬上、下模之預定位置後，再將該金屬上、下模給予關閉，以使該砂心內模之夾持部受該金屬上、下模所夾緊，且使已黏合固定於該砂心內模處的該銅墊片另端分別抵頂於該金屬上、下模之預定位置的內壁面，以確保該砂心內模能呈部分支撐 近懸空狀固定於該金屬上、下模之預定位置處(即利用已組設於該砂心內模之定位槽處的該銅墊片、該砂心內模之定位柱及其夾持段同時受該金屬上、下模夾緊作用後，而使該砂心內模能部分支撐近懸空狀固定於該金屬上、下模之預定位置處)；(E)澆注加壓加工：將熔融狀銅合金液體倒入機器之暫貯筒處，再經推進器(如：油壓缸、或氣壓缸、或螺旋推進器等)加壓推動作用，而使該銅合金液體先流經該金屬上模之注入口處後，再注滿分佈於該金屬上、下模之預定位置及該砂心內模周側處；(F)冷卻取樣加工：待熔融狀銅合金液體冷卻至近常溫時，再打開該金屬上、下模而取出一包覆有該砂心內模的初胚雛型；(G)震動清理加工：經震動作用而將該初胚雛型內的砂心內模給予震碎取出，而形成有中空氣室及混合管的初胚爐頭；(H)補料加工：利用焊燒技術將銅料件焊接於該初胚爐頭之破損處，以確保該初胚爐頭外表面無缺洞；(I)抛光加工：將已補料於該初胚爐頭之破損處進行表面的抛光，以確保該初胚爐頭外表面平整；(J)孔槽加工：利用鑽孔或車槽或滾槽技術將該初胚爐頭頂面進行加工，以使該初胚爐頭具有焰孔；(K)修平加工：將已具有焰孔的該初胚爐頭表面進行車(銑)削作業，以使該初胚爐頭表面更加精緻化；(L)成品：完成一具有氣室、混合管及焰孔的銅爐頭成品。 In order to achieve the purpose of the above creation, the main technical means of the present invention, the manufacturing steps are as follows: (A) Material preparation and processing: purchase or make your own sand core inner mold of predetermined shape and size required for the gas copper burner head; the sand core inner mold is at least It includes a base that will become the gas chamber of the future copper burner and a tube that will become the mixing tube of the future copper burner. The top and bottom surfaces of the base are respectively provided with a plurality of positioning grooves for the copper gaskets to be assembled separately. It is arranged to be fixed in the positioning groove, and the copper gasket that has been assembled at the positioning groove can be accommodated against the fixed groove at the inner wall surface of the predetermined position of the metal upper and lower molds respectively; the pipe part One end is connected to the base and the other end forms a clamping section for clamping the upper and lower metal dies. The clamping section is provided with slots and protruding positioning posts near the clamping section; (B) Adhesion processing: using Adhesive (such as white glue, or quick-drying glue, etc.) adheres and fixes the copper gasket to the positioning grooves at the base of the sand core inner mold, and the plurality of positioning grooves of the sand core inner mold are arranged in an equidistant ring. is the best; the copper gasket is "

” shape, or in the shape of convex characters; (C) Spraying processing: After opening the upper and lower metal molds, spray the release agent evenly on the predetermined positions of the upper and lower metal molds; and the predetermined positions of the upper and lower metal molds There is a fixed groove on the inner wall of the position, and the fixed groove is corresponding to the positioning groove of the sand core inner mold for the other end of the copper gasket that has been assembled at the positioning groove of the sand core inner mold. It can accommodate the limit; (D) Insertion and closing process: Place the sand core inner mold with the copper gasket adhered to the predetermined position of the upper and lower metal molds, and then place the upper metal mold , The lower mold is closed so that the clamping part of the sand core inner mold is clamped by the metal upper and lower molds, and the other ends of the copper gaskets that have been bonded and fixed at the sand core inner mold are pressed against each other. on the inner wall surfaces of the predetermined positions of the metal upper and lower molds to ensure that the sand core inner mold can be partially supported and fixed at the predetermined positions of the metal upper and lower molds (i.e., by using the inner molds that have been assembled on the sand core The copper gasket at the positioning groove of the inner mold, the positioning column of the sand core inner mold and its clamping section are simultaneously clamped by the metal upper and lower molds, so that the sand core inner mold can be partially supported and nearly suspended. fixed at the predetermined positions of the upper and lower molds of the metal); (E) Pouring and pressure processing: Pour the molten copper alloy liquid into the temporary storage tube of the machine, and then pass it through the propeller (such as: hydraulic cylinder, or Pneumatic cylinder, or screw propeller, etc.) pressurizes and promotes the copper alloy liquid to flow through the injection port of the metal upper mold first, and then fills the predetermined positions of the metal upper and lower molds and the sand. At the peripheral side of the core inner mold; (F) Cooling sampling process: when the molten copper alloy liquid is cooled to nearly normal temperature, the upper and lower metal molds are opened and a preliminary embryonic prototype covered with the sand core inner mold is taken out; (G) Vibration cleaning processing: The sand core inner mold in the preliminary embryo model is crushed and taken out by vibration, and a preliminary embryo furnace head with a hollow air chamber and a mixing tube is formed; (H) Filling processing: Use welding technology to weld the copper parts to the damaged areas of the preliminary furnace head to ensure that there are no holes on the outer surface of the preliminary furnace head; (I) Polishing process: place the patched material on the damaged areas of the preliminary furnace head Carry out surface polishing to ensure that the outer surface of the preliminary furnace head is smooth; (J) Hole processing: use drilling, turning or rolling groove technology to process the surface of the preliminary furnace head to make the preliminary furnace head With flame holes; (K) Trimming processing: Carry out turning (milling) operations on the surface of the preliminary furnace head that already has flame holes, so as to make the surface of the preliminary furnace head more refined; (L) Finished product: Complete a finished product with Finished copper burner head with gas chamber, mixing tube and flame hole.

[This creation]

1: Sand core inner mold

10:Base

101:Top surface

102: Bottom surface

103: Positioning slot

104: Positioning slot

11: Management Department

112: Clamping section

113:Slotting

114: Positioning column

2: Copper stove head

20:Air chamber

21:Mixing tube

22: Flame hole

3: Copper gasket

40:Metal upper mold

401:Inner wall surface

402: Fixed groove

41:Metal lower mold

411:Inner wall surface

412: Fixed groove

(A):Material preparation and processing

(B): Adhesion processing

(C):Spray coating processing

(D): Insertion and closing mold processing

(E): Pouring and pressure processing

(F): Cooling sampling processing

(G): Vibration cleaning processing

(H): Supplementary material processing

(I): Polishing

(J): Hole and slot machining

(K):Smoothing

(L):finished product

Figure 1 is a processing flow chart of the gas copper burner manufacturing method of the present invention.

Figure 2 is a three-dimensional exploded schematic diagram of the sand core inner mold of the present invention.

Figure 3 is a schematic diagram of the combined cross-section when Figure 2 is applied.

Figure 4 is a three-dimensional view of the finished product produced by the present invention.

」形狀、或呈「M」形狀、或呈凸字狀為最佳；(C)噴塗加工：先將該金屬上、下模40、41打開後，再將脫模劑均勻噴塗於該金屬上、下模40、41之預定位置處；又，該金屬上、下模40、41之預定位置的內壁面401、411處設有定凹槽402、412，且該定凹槽402、412係對應於該砂心內模2之定位槽103、104，以供已組設於該砂心內模1之定位槽103、104處的該銅墊片3另端能容置抵頂限位之用； The present invention relates to a method for manufacturing a gas copper burner and a sand core inner mold for manufacturing the gas copper burner. Please refer to Figures 1 to 4. The manufacturing method of the gas copper burner is as follows: (A) Material preparation Processing: Purchase or make your own sand core inner mold 1 of predetermined shape and size required for the gas copper burner head; the sand core inner mold 1 at least includes a base 10 for forming the gas chamber 20 of the future copper burner head 2, and a copper furnace The tube part 11 for the mixing tube 21 of the head 2; wherein, the top surface 101 and the bottom surface 102 of the base part 10 are respectively provided with a plurality of positioning grooves 103, 104, so that the copper gaskets 3 can be assembled and fixed one by one. In the positioning grooves 103 and 104, the copper gasket 3 that has been assembled at the positioning grooves 103 and 104 can be accommodated against the inner wall 401 at the predetermined position of the upper and lower metal molds 40 and 41 respectively. , the fixed grooves 402 and 412 at 411 (that is, the copper gasket 3 is clamped and limited between the upper and lower metal molds 40 and 41 respectively and the sand core inner mold 1 to serve as the copper gasket 3 and the (for limiting the position of the inner mold 1 of the sand core); one end of the pipe portion 11 is connected to the base portion 10 and the other end is formed with a clamping section 112 for clamping the upper and lower metal molds 40, 41. There are sectional grooves 113 and protruding positioning posts 114 (as shown in Figure 2) near the clamping section 112; the plurality of positioning grooves 103 and 104 of the sand core inner mold 1 are arranged in an equidistant annular shape. Best; (B) Adhesive processing: Use home OEM method or hire non-professional personnel (such as housewives, child workers, second-time employment, etc.) to apply adhesive (such as white glue, or After applying quick-drying glue, etc.), the copper gasket 3 coated with adhesive can be directly bonded and fixed to the positioning grooves 103 and 104 of the base 10 of the sand core inner mold 1 (as shown in Figures 2 and 3). ; And the above-mentioned copper gasket 3 is in the form of "

" shape, or "M" shape, or convex shape is the best; (C) Spraying process: first open the upper and lower molds 40 and 41 of the metal, and then spray the release agent evenly on the metal , at the predetermined positions of the lower molds 40 and 41; and, the inner wall surfaces 401 and 411 of the predetermined positions of the upper and lower metal molds 40 and 41 are provided with fixed grooves 402 and 412, and the fixed grooves 402 and 412 are Corresponding to the positioning grooves 103 and 104 of the sand core inner mold 2, the other end of the copper gasket 3 that has been assembled at the positioning grooves 103 and 104 of the sand core inner mold 1 can accommodate the top limiter. use;

(D) Place the mold closing process: Align the other end of the copper gasket 3 at the inner mold 1 of the sand core with the fixed grooves 402, 412 of the upper and lower metal molds 40, 41 before the bonded After the sand core inner mold 1 with the copper gasket 3 is placed at the predetermined position of the metal upper and lower molds 40 and 41, the metal upper and lower molds 40 and 41 are then closed so that the sand core inner mold 1 The clamping part 11 of the mold 1 is clamped by the upper and lower metal molds 40 and 41. At the same time, the other ends of the copper gasket 3 that have been bonded and fixed to the inner mold 1 of the sand core are pressed against the metal respectively. , in the fixed grooves 402, 412 of the inner wall surfaces 401, 411 at the predetermined positions of the lower molds 40, 41, to ensure that the sand core inner mold 1 can be fixed in a nearly suspended state supported by part (that is, the copper gasket 3) The metal upper and lower molds 40, 41 are at predetermined positions (as shown in Figure 3); in short, the copper gasket 3, which has been assembled at the positioning grooves 103, 104 of the sand core inner mold 1, Only after the positioning column 114 and the clamping section 112 of the sand core inner mold 1 are clamped by the upper and lower metal molds 40 and 41 at the same time can the sand core inner mold 1 form at least a multi-point support mode. It is fixed to the predetermined position of the upper and lower metal molds 40 and 41 in a nearly suspended state;

(E) Pouring and pressure processing: Pour the molten copper alloy liquid into the temporary storage tube (not shown) of the machine (not shown), and then pass it through a propeller (such as a hydraulic cylinder or a pneumatic cylinder) , or screw propeller, etc.) to pressurize the molten copper alloy liquid to flow, so that the copper alloy liquid flows first After passing through the injection port (not shown in the figure) of the metal upper mold 40, it is filled and distributed at the predetermined positions of the metal upper and lower molds 40, 41 and the 1 peripheral side of the sand core inner mold;

(F) Cooling sampling process: when the molten copper alloy liquid is cooled to nearly normal temperature, the upper and lower metal molds 40 and 41 are opened to take out a preliminary embryonic prototype covered with the sand core inner mold 1;

(G) Vibration cleaning process: The sand core inner mold 1 in the preliminary embryo model is crushed and taken out through vibration (machine or beating), and a preliminary embryo with a hollow air chamber 20 and a mixing tube 21 is formed. stove;

(J) Hole processing: The top surface of the preliminary furnace head is processed by drilling, turning or rolling groove technology, so that a plurality of flame holes 22 are formed on the preliminary furnace head;

(K) Smoothing processing: Carry out turning (milling) operation on the surface of the preliminary furnace head which already has a plurality of flame holes 22, so as to make the surface of the preliminary furnace head more refined;

(L) Finished product: Complete a copper burner head 2 (as shown in Figure 4) with a gas chamber 20, a mixing tube 21 and a flame hole 22.

Furthermore, in order to improve the qualification rate of the preliminary furnace head produced by the present invention, a "(H) replenishing processing" step can also be added after the above-mentioned "(G) vibration cleaning processing" step, wherein, ( H) Filling processing: Welding technology is used to weld copper parts to the damaged areas of the preliminary furnace head to ensure that there are no holes on the outer surface of the preliminary furnace head and that there is a hollow air chamber 20 in the preliminary furnace head. There will be no air leakage;

In addition, in order to improve the surface consistency of the preliminary furnace head, the step of "(I) polishing processing" can be added after the above-mentioned "(H) supplementary processing" step, in which (I) polishing processing is Material has been added to the damaged area of the preliminary furnace head and the surface is polished to ensure that the outer surface of the preliminary furnace head is smooth.

Through the above steps, the present invention first uses the home OEM method or hires non-professional personnel (such as housewives, child workers, second-time employment, etc.) to bond the copper gasket 3 to the base of the sand core inner mold 1 10 at the positioning grooves 103 and 104, and the copper gasket 3 already located at the sand core inner mold 1 is pressed against the fixed grooves 402 and 412 at the predetermined positions of the metal upper and lower molds 40 and 41 respectively. and the positioning grooves 103 and 104 of the sand core inner mold 1, so that the sand core inner mold 1 can be fixed to the predetermined position of the metal upper and lower molds 40 and 41 in a partially supported, nearly suspended state, and then through (A) Material preparation processing; (B) Bonding processing; (C) Spraying processing; (D) Inserting and closing mold processing; (E) Pouring and pressurizing processing; (F) Cooling and sampling processing; (G) Vibration cleaning processing; ( Only after steps such as H) filling processing; (I) polishing processing; (J) hole and groove processing; (K) smoothing processing; (L) finished product, can a structure with an air chamber 20, a mixing tube 21 and a flame hole 22 be completed. Copper stove head 2 finished product, in this way, non-professional personnel can be hired to replace professional master-level personnel, which can greatly reduce the over-reliance on master-level personnel and reduce their labor costs, and can reduce the technical bottleneck of the sunset industry, so that New personnel can be re-injected to revitalize or extend the life of the industry. At the same time, it can also greatly increase production capacity and yield, thereby greatly improving its market competitiveness.

The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention; therefore, all equivalent changes or modifications made in accordance with the characteristics and spirit described in the application scope of the present invention shall include Within the scope of the patent application of this invention.

(A):Material preparation and processing

(B): Adhesion processing

(C):Spray coating processing

(D): Insertion and closing mold processing

(E): Pouring and pressure processing

(F): Cooling sampling processing

(G): Vibration cleaning processing

(H): Supplementary material processing

(I): Polishing

(J): Hole and slot machining

(K):Smoothing

(L):finished product

Claims (9)

A method for manufacturing a gas copper burner, the manufacturing steps of which at least include: (A) material preparation and processing: purchase or make a sand core inner mold of a predetermined shape and size, the sand core inner mold is provided with a base, and the top and bottom surfaces of the base are respectively provided with There are multiple positioning grooves; (B) Adhesion processing: Use the action of adhesive to adhere and fix a plurality of copper gaskets to the positioning grooves of the sand core inner mold; (C) Spraying processing: After opening the upper and lower metal molds , a fixed groove will be formed on the inner wall surface of the predetermined position of the upper and lower metal molds corresponding to the positioning groove, so as to facilitate the spraying of the release agent on the inner wall surface of the predetermined position of the upper and lower metal molds. At the fixed groove; (D) Place the mold closing process: Place the sand core inner mold with the copper gasket adhered to the predetermined position of the upper and lower metal molds, and then move the upper and lower metal molds The mold is closed so that the clamping portion of the sand core inner mold is clamped by the metal upper and lower molds, and the copper gaskets that have been adhered and fixed to the sand core inner mold are pressed against the metal. , the inner wall surface of the predetermined position of the lower mold to ensure that the sand core inner mold can be partially supported and fixed in a nearly suspended state at the predetermined position of the metal upper and lower molds; so that the copper that has been assembled at the positioning groove The other end of the gasket can be accommodated up to the top limit at the fixed groove of the upper and lower metal molds. (E) Pouring and pressure processing: Pour the molten copper alloy liquid into the temporary storage barrel of the machine, and then pressurize and push it to fill the predetermined positions of the metal upper and lower molds and the sand. At the peripheral side of the core inner mold; (F) Cooling sampling process: when the molten copper alloy liquid is cooled to nearly normal temperature, the upper and lower metal molds are opened and a preliminary embryonic prototype covered with the sand core inner mold is taken out; (G) Vibration cleaning process: Vibrating the sand core inner mold in the preliminary embryo Crush it and take it out to form a preliminary furnace head with a hollow air chamber and a mixing tube; (J) Hole processing: Use drilling or grooving or rolling groove technology to process the surface of the preliminary furnace head so that the preliminary furnace head The embryo burner head is formed with a flame hole; (L) Finished product: a finished copper burner head with a gas chamber, a mixing tube and a flame hole is completed; through the above steps, the present invention uses non-professional personnel to first bond the copper gasket At the positioning groove of the sand core inner mold, the copper gasket that has been positioned at the sand core inner mold is pressed against the fixed grooves at the predetermined positions of the metal upper and lower molds and the sand core inner mold respectively. positioning groove, so that the sand core inner mold can be fixed in a partially supported, nearly suspended state at the predetermined position of the metal upper and lower molds. In this way, non-professional personnel can be hired to replace professional master-level personnel. In order to greatly reduce the over-reliance on master-level personnel and reduce their labor costs, it can also reduce the technical bottleneck of the sunset industry, so that new personnel can be re-injected to activate or extend the life of the industry. At the same time, it can also greatly increase the production capacity. and yield rate, thereby significantly improving its market competitiveness. For example, in the gas copper burner manufacturing method described in item 1 of the patent application, the step of "(J) hole processing" can be followed by the step of "(K) smoothing processing"; and the smoothing processing will be The surface of the preliminary furnace head with the flame hole is turned (milled) to make the surface of the preliminary furnace head more refined. For example, the gas copper burner manufacturing method described in item 1 or 2 of the patent application scope, wherein, between the "(G) vibration cleaning process" step and the "(J) hole groove processing" step, there is an additional "(H) ) step of "replenishing material processing"; and this replenishing material processing uses welding technology to weld copper parts to the damaged areas of the preliminary embryonic furnace head to ensure that there are no holes in the outer surface of the preliminary embryonic furnace head. For example, in the gas copper burner manufacturing method described in item 3 of the patent application, the "(H) filling processing" step is followed by the "(I) polishing processing" step; and the polishing processing step The work system will polish the surface of the damaged area of the preliminary furnace head with the added material to ensure that the outer surface of the preliminary furnace head is smooth. A sand core inner mold used for manufacturing gas copper burners. The sand core inner mold at least includes a base that becomes the gas chamber of the future copper burner and a tube that becomes the mixing tube of the future copper burner, wherein: the The base is provided with a plurality of positioning grooves on its top and bottom surfaces respectively, so that copper gaskets can be assembled and fixed in the positioning grooves respectively; one end of the tube part is connected to the base and the other end is formed with a metal The clamping section for clamping the upper and lower molds is provided with a protruding positioning post; through the above, using the copper gasket that has been assembled at the positioning groove of the sand core inner mold, The positioning post and the clamping section of the sand core inner mold are clamped by the metal upper and lower molds at the same time, so that the sand core inner mold is partially supported and fixed to the predetermined position of the metal upper and lower molds in a nearly suspended state. location. For example, in the sand core inner mold for manufacturing gas copper stove heads described in item 5 of the patent application, the inner wall surfaces of the upper and lower metal molds are provided with fixed grooves at predetermined positions, and the fixed grooves are The positioning groove corresponding to the sand core inner mold is used for the other end of the copper gasket that has been assembled at the positioning groove of the sand core inner mold to accommodate the position limit. For example, in the sand core inner mold for manufacturing gas copper burners described in item 6 of the patent application, it is best if the plurality of positioning grooves of the sand core inner mold are arranged in an equidistant annular shape. For example, in the sand core inner mold for manufacturing gas copper burners described in item 6 or 7 of the patent application, a slit is provided near the clamping section of the sand core inner mold. As described in item 8 of the patent application, the sand core inner mold used for manufacturing gas copper burners, wherein the copper gasket is in the form of "

” shape, or “M” shape, or convex shape.

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