A manufacturing process of a drain handle shell

Abstract

The present application relates to a kind of lower water device handle shell manufacturing process, comprising the following steps: step S1: cutting material process;Step S2: shaping process, blank is pushed into shaping mold cavity and is extruded blank corresponding to the shape of lower water device handle shell;Step S3: core setting process, after blank is shaped, blank is pushed into core setting mold cavity and the position of center hole of blank is determined, the position of center hole of blank is extruded by front punch, and the shape and depth of center hole are determined;Step S4: stretching process, after blank is set, blank is pushed into stretching mold cavity and is carried out evacuation treatment to blank, and the shape of blank and inner hole is extended to the shape required;Step S5: hemispherical forming process, after blank is stretched, blank is pushed into hemispherical forming mold cavity, and the top of its shell is hemispherical shape.By using the above technical scheme, the manufacturing method of forging is used, one-time forming, continuous uninterrupted mechanical forming modularization, manufacturing procedure is simpler, production cost is reduced and the quality and production efficiency of lower water device handle shell are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the mechanical technical field, and relates to a sink handle shell manufacturing process. BACKGROUND

[0002] In daily life, a sink is one of the kitchen and bathroom appliances, which can be installed in a sink, a basin, a mop pool and the like. The kitchen sink and the mop pool are commonly used water containers in a family, and the water in the containers must be discharged after use. Therefore, a handle must be installed on the drain pipe of the container. The handle includes a pull rod and a handle on the upper part of the handle. The handle is generally in the shape of a small waist with a spherical top. The pull rod is provided with threads, and the handle shell is internally provided with a half-through hole-shaped internal thread body. The handle shell is generally manufactured through casting, die casting, cutting and turning processes. These processes are complicated and require high quality, which increases the production cost of the shell and reduces the production efficiency and quality of the shell. SUMMARY

[0003] In summary, in order to overcome the shortcomings of the prior art, the present application provides a sink handle shell manufacturing process with low cost, good quality and high production efficiency.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a sink handle shell manufacturing process, comprising the following steps: step S1: cutting material, cutting a blank to a corresponding length according to the volume of the product; step S2: shaping, pushing the blank into a shaping mold cavity to extrude a blank with a shape corresponding to the shape of the sink handle shell; step S3: core setting, pushing the shaped blank into a core setting mold cavity to determine the position of the blank center hole, and determining the shape and depth of the center hole by extruding the center hole position with a front punch; step S4: stretching, pushing the core-set blank into a stretching mold cavity to perform vacuum treatment on the blank, and extending the shape and inner hole of the blank to the required shape; and step S5: hemispherical forming, pushing the stretched blank into a hemispherical forming mold cavity to make the top of the shell hemispherical, thereby forming the sink handle shell.

[0005] By adopting the above technical scheme, the sink handle shell is manufactured by forging, which is formed at one time, continuously and uninterruptedly, and the mechanical forming module is modularized, so that the manufacturing process of the sink handle shell is simpler, the production cost of the sink handle shell is reduced, and the quality and production efficiency of the sink handle shell are improved.

[0006] The application further provides that the step S2 is provided with a flattening process, the cut-off blank is pushed into a designed and preloaded initial flattening mold cavity, and the blank is flattened in the initial flattening mold cavity by high-temperature and high-speed stamping of the front punch rod, so that the blank is extruded into an initial shape of the pull handle shell of the drain that is consistent with the design shape and size of the mold cavity, and then the blank is ejected by the back punch rod.

[0007] By adopting the above technical scheme, since the drain has different specifications and types, the cut-off blank is pushed into different designed and preloaded initial flattening mold cavities according to different requirements, and the blank is flattened, so that the blank after the flattening process is more accurate in material.

[0008] The application further provides that the step S2 is provided with a material distribution process, the cut-off or flattened blank is pushed into a material distribution mold cavity, and the blank is subjected to material distribution treatment of each part, so that the blank metal is rapidly flowed by rapid extrusion of the front punch rod in the fixed shape of the mold cavity, and each part size blank required by the pull handle shell of the drain is formed, and then the blank is ejected by the back punch rod.

[0009] By adopting the above technical scheme, since the shapes of each part of the pull handle shell of the drain are different, the required size and metal amount are different, and after the material distribution process, the blank can be extruded into the required rough size of each part.

[0010] The application further provides that the step S2 includes that the shaping mold cavity is a bottomed mold cavity or a straight-through mold cavity, and the outer peripheral shape of the mold cavity includes a hexagon, a quadrilateral, a circle, a rectangle, a triangle and a gear shape.

[0011] By adopting the above technical scheme, the bottomed mold cavity or the straight-through mold cavity is selected according to the specifications and shapes of the product, and since the shape of the periphery of the mold cavity is designed and customized according to the requirements of the product, the outer peripheral shape of the mold cavity is generally a hexagon, a quadrilateral, a circle, a rectangle, a triangle and a gear shape.

[0012] The application further provides that the step S3 includes that the shaped blank is pushed into a core setting mold cavity, the shape and high-precision size of the pull handle shell blank of the drain are fixed by the mold cavity, the position of the center hole of the blank is extruded by the front punch rod, the shape and depth of the center hole are determined, and the stretching process is prepared, and then the blank is successively ejected by the back punch rod.

[0013] By adopting the above technical scheme, the position of the center hole of the blank is determined, and the stretching process is prepared.

[0014] The application further provides that the step S4 comprises: pushing the core-fixed blank into a stretching mold cavity, after the depth, external shape and high-precision size of the blank in the mold cavity are fixed, the front punch rod performs a vacuum treatment on the blank, the blank shape and height are extended to the required shape and length, and a blank forming semi-finished product with a standard size and shape inner hole is formed, and then the blank forming semi-finished product is ejected by the rear punch rod.

[0015] By adopting the above technical scheme, the front punch rod performs a vacuum treatment on the blank, the excess material is extruded to extend to the outer wall, a blank forming semi-finished product with a standard size and shape inner hole is formed, the material is accurately used, and the cost is reduced.

[0016] The application further provides that the stretched blank is pushed into a hemispherical forming mold cavity, after the metal blank is impacted by the front punch rod in the mold cavity, the metal extrusion deformation extends along the outer edge of the mold cavity to form a spherical body, the outer edge of the hemispherical forming mold cavity shapes the lower hemispherical surface of the blank, the front punch rod is in a circular arc shape to shape the upper hemispherical surface of the blank, the depth position of the mold cavity is fixed by the rear punch rod, a vacuum treatment is performed on the other end blank of the drain pull handle shell, and then a blank with high precision of the peripheral part, the ball top part and the intermediate hollow part consistent with the drain pull handle shell is formed.

[0017] By adopting the above technical scheme, the depth and outer diameter size of the mold cavity are designed according to the length and outer diameter required size of the drain pull handle shell, the hemispherical surface part mold cavity is at the outer edge part of the mold, the angle and diameter of the outer diameter step of the mold outer edge are determined according to the required size of the handle shell, the outer surrounding handle body is in a circular arc shape, the depth position of the mold cavity is fixed by the rear punch rod, and thus a blank with high precision of the peripheral part, the ball top part and the intermediate hollow part consistent with the drain pull handle shell is formed.

[0018] The application further provides that the step S5 is a hemispherical forming process repeated once or more than once.

[0019] By adopting the above technical scheme, because of the limitation of metal flow, the hardness of the metal itself also does not support too large one-time metal deformation, the supplementary repetitive process of the hemispherical forming process can achieve a high-standard consistent handle shell with high forming quality.

[0020] The application further provides that the step S6: a foot edge forming process is further included, the hemispherical formed handle shell blank is pushed into a foot edge forming mold cavity, the depth and outer diameter size of the blank in the mold cavity are fixed, the front punch rod extrudes the edge of the handle shell into a standard eight- character flared mouth shape, and thus a standard drain pull handle is formed.

[0021] By adopting the above technical scheme, the handle mouth part is formed into a flared mouth with more tension, and the bearing surface is increased.

[0022] The application further provides that the blank is made of stainless steel material.

[0023] By adopting the above technical solution, it is not easy to rust, and it has a long service life when used for drain drainage.

[0024] The embodiments describe specific implementations of the present invention. Attached Figure Description

[0025] Figure 1 This is a schematic flowchart of the manufacturing process of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic flowchart of the manufacturing process of Embodiment 2 of the present invention;

[0027] Figure 3 This is a schematic flowchart of the manufacturing process of Embodiment 3 of the present invention;

[0028] Figure 4 This is a schematic flowchart of the manufacturing process of Embodiment 4 of the present invention;

[0029] Figure 5 This is a cross-sectional schematic diagram of a bottom mold cavity and a through mold cavity according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the punch rod in the hemispherical forming process according to an embodiment of the present invention. Detailed Implementation

[0031] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0032] See appendix Figures 1-6 A manufacturing process for a drain handle housing, such as Figure 1 As shown, the manufacturing process of a drain handle housing in Embodiment 1 of the present invention includes the following steps: Step S1: Cutting process, cutting blanks to the appropriate length according to the volume of the product; Step S2: Shaping process, pushing the blank into the shaping mold cavity to press out a blank with an outer shape corresponding to the shape of the drain handle housing; Step S3: Core setting process, pushing the shaped blank into the core setting mold cavity to determine the position of the center hole, and pressing the center hole of the blank with the front punch to determine the shape and depth of the center hole; Step S4: Stretching process, pushing the cored blank into the stretching mold cavity to perform a vacuuming process on the blank, extending the outer shape and inner hole of the blank to the required shape; Step S5: Hemispherical forming process, pushing the stretched blank into the hemispherical forming mold cavity to make the top of the housing into a hemispherical shape, forming the drain handle housing.

[0033] The embodiment is further provided with a cutting process, which cuts the blank according to the volume of the product, specifically, cuts the blank from the round material of stainless steel based on the volume of the drain puller shell to be manufactured.

[0034] The embodiment is further provided with a flattening process and a material dividing process before the step S2.

[0035] The embodiment is further provided with a flattening process or a material dividing process before the step S2.

[0036] The embodiment is further provided with a flattening process, which pushes the cut round material into the initial flattening mold cavity designed in advance, so that the cut blank is flattened in the mold cavity under the high-temperature and high-speed stamping of the front rod, and the drain puller shell initial shape with the same design shape and size is extruded out of the mold cavity, and then the blank is ejected by the back rod.

[0037] The embodiment is further provided with a material dividing process, which pushes the flattened blank into the material dividing mold cavity, divides the blank in each part, and makes the blank metal flow fast under the fast impact and extrusion of the front rod in the fixed shape of the mold cavity, so as to obtain the blank with the required size of each part of the drain puller shell, because the shapes of each part of the drain puller shell are different, the required size and the amount of metal are different. After the material dividing process, the blank is extruded into the required size of each part, and then is ejected by the back rod and sent to the next step.

[0038] The embodiment is further provided with a shaping process, which pushes the flattened or divided blank into the shaping mold cavity, and extrudes the blank with the shape corresponding to the drain puller shell, and the mold cavity is divided into bottom mold cavity and straight-through mold cavity according to the different requirements of the blank, and then the blank with the shape corresponding to the drain puller shell is extruded and ejected by the back rod and sent to the next step. In the technical scheme of the present application, the shape of the periphery of the mold cavity is designed and customized according to the requirements of the product, and the shape of the periphery of the mold cavity is generally hexagonal, square, circular, rectangular, triangular and gear-shaped.

[0039] The embodiment is further provided with a core setting process, which pushes the shaped blank into the core setting mold cavity, the mold cavity fixes the shape and high-precision size of the blank of the drain puller shell, the position of the center hole of the blank is extruded by the front rod, the shape and depth of the center hole are determined, and the stretching process is prepared, and then the blank is ejected by the back rod and sent to the next step.

[0040] The embodiment is further provided with a stretching process, after the blank is pushed into the stretching mold cavity and fixed in the cavity with a certain depth, external shape and high-precision size, the front punch rod performs evacuation treatment on the blank, extends the shape and height of the blank to the required shape and length, and forms an inner hole with standard size and shape, and the blank after the stretching process forms a semi-finished product, which is then pushed out by the rear punch and sent to the next process.

[0041] The embodiment is further provided with a hemispherical forming process, after the stretched blank is pushed into the hemispherical forming mold cavity, the metal blank is impacted by the front punch rod, and the metal extrusion deformation is formed along the outer edge of the mold cavity to form a spherical body, the outer edge of the hemispherical forming mold cavity forms the lower hemispherical surface of the blank, the front punch rod is in the shape of a circular arc to form the upper hemispherical surface of the blank, and the rear punch rod fixes the depth position of the mold cavity to perform evacuation treatment on the other end of the blank of the drain pull handle shell, and then a high-precision blank with consistent outer peripheral part, spherical top part and intermediate hollow part is formed.

[0042] Because of the limitation of metal flow, the hardness of the metal itself also does not support too large one-time metal deformation.

[0043] The embodiment is further provided with a supplementary repetitive process of the inherent hemispherical forming process, so that a high-standard consistent handle shell can be obtained, which is then pushed out by the rear punch and sent to the next process.

[0044] The embodiment is further provided with a handle leg along forming process, after the hemispherical handle shell blank is pushed into the leg along forming mold cavity, the mold cavity fixes the depth and outer diameter size of the blank, the front punch rod extrudes the edge of the handle shell into a standard eight- character flared mouth shape, the handle mouth part forms a flared mouth with more tension and increased bearing surface, thereby forming a standard drain pull handle shell.

[0045] The embodiment is further provided with that the blank is made of stainless steel material.

[0046] It should be noted that in the present application, the flattening process, the material distribution process, the shaping process, the core setting process, the stretching process, the hemispherical forming process and the leg along forming process are determined by the shape and type of the drain pull handle shell, and when the type or shape of the handle shell changes, the number and order of the above processes can be adjusted accordingly.

[0047] For example, Figure 1 The manufacturing process sequence in the embodiment 1 shown in the above table includes: cutting process - shaping process - core setting process - stretching process - hemispherical forming process - upper end flattening process. Figure 2 The manufacturing process sequence in the embodiment 2 shown in the above table includes: cutting process - shaping process - core setting process - stretching process - hemispherical forming process - hemispherical forming process. Figure 3The manufacturing process in the embodiment 3 shown in the figure comprises in sequence: cutting process - shaping process - core setting process - stretching process - hemispherical forming process - hemispherical forming process - foot rim forming process; Figure 4 The manufacturing process in the embodiment 4 shown in the figure comprises in sequence: cutting process - shaping process - core setting process - stretching process - hemispherical forming process - hemispherical forming process - side wall forming process.

[0048] These terms are used only to more conveniently describe and explain the nature of the present application; they are not to be construed as limiting in any way.

Claims

1. A process for making a drain puller handle housing, the process comprising: The method comprises the following steps: S1, cutting step, cutting the blank to a corresponding length according to the volume of the product; S2, shaping step, pushing the blank into a shaping mold cavity to extrude a blank with a shape corresponding to the shape of the lower water pull handle shell; S3, core setting step, pushing the shaped blank into a core setting mold cavity to determine the position of the center hole of the blank, extruding the position of the center hole of the blank by the front punch, and determining the shape and depth of the center hole; S4, stretching step, pushing the blank after core setting into a stretching mold cavity to perform vacuum treatment on the blank, and extending the shape and center hole of the blank to the required shape; the step S4 comprises: pushing the blank after core setting into a stretching mold cavity, fixing the depth, external shape and high-precision size in the stretching mold cavity, and then performing vacuum treatment on the blank by the front punch, extending the shape and height of the blank to the required shape and length, and forming a center hole with standard size and shape, so that the blank becomes a semi-finished product, and the semi-finished product is then pushed out by the rear punch; S5, hemispherical forming step, pushing the stretched blank into a hemispherical forming mold cavity to make the top of the blank hemispherical, and forming a lower water pull handle shell blank; the step S5 comprises: pushing the stretched blank into a hemispherical forming mold cavity, and after the metal blank is impacted by the front punch in the hemispherical forming mold cavity, the outer wall of the hemispherical forming mold cavity forms the lower hemispherical surface of the blank, the front punch is in the shape of a circular arc to form the upper hemispherical surface of the blank, the rear punch fixes the depth position of the hemispherical forming mold cavity, and performs vacuum treatment on the other end of the blank, and then a high-precision blank with a consistent outer periphery, ball top and middle hollow part is formed; the step S5 is a hemispherical forming step repeated more than once; and the method further comprises a step S6, foot edge forming step, pushing the lower water pull handle shell blank after hemispherical forming into a foot edge forming mold cavity, fixing the depth and outer diameter size of the lower water pull handle shell blank by the foot edge forming mold cavity, extruding the edge of the lower water pull handle shell blank into a standard eight- character flared mouth shape by the front punch, and thus forming a standard lower water pull handle shell. ​ 2. The process for manufacturing a drain handle housing according to claim 1, wherein: The step S2 is provided with a flattening step before it, the blank after cutting is pushed into a designed and pre-assembled initial flattening mold cavity, and the blank is flattened in the initial flattening mold cavity by high-temperature and high-speed extrusion of the front punch, so that the blank is extruded into an initial shape of the lower water pull handle shell consistent with the designed shape and size of the initial flattening mold cavity, and then the blank is pushed out by the back punch.

3. A process for making a sink handle housing according to claim 1 or 2, wherein: The step S2 is provided with a material distribution step before it, the blank after cutting or flattening is pushed into a material distribution mold cavity, and each part of the blank is subjected to material distribution treatment, so that the blank metal flows rapidly under the rapid impact extrusion of the front punch in the fixed shape of the material distribution mold cavity, a blank with required sizes of each part of the lower water pull handle shell is formed, and then the blank is pushed out by the rear punch.

4. The process for manufacturing a drain handle housing according to claim 1, wherein: The step S2 comprises that the shaping mold cavity is a bottomed mold cavity or a straight-through mold cavity, and the external shape of the shaping mold cavity comprises a hexagon, a circle, a rectangle, a triangle and a gear shape.

5. The process for manufacturing a sink handle housing according to claim 1, wherein, The step S3 comprises: pushing the integerized blank into a core mold cavity, the core mold cavity fixing the shape and high-precision size of the pull handle shell blank of the lower water device, the position of the center hole of the blank being extruded by the front punch rod, the shape and depth of the center hole being determined, and the preparation for the stretching process being made, and the rear punch rod successively ejecting.

6. The process for manufacturing a drain handle housing according to claim 1, wherein: The blank is made of stainless steel material.

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