CN114433720A

CN114433720A - Iron frame product production process

Info

Publication number: CN114433720A
Application number: CN202210058613.5A
Authority: CN
Inventors: 王晓明; 申富涛
Original assignee: Huizhou Hengzhi Electronic Technology Co ltd
Current assignee: Huizhou Hengzhi Electronic Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-05-06

Abstract

The invention discloses a production process of an iron frame product, which comprises the following steps: s1: firstly, respectively carrying out processes of marking lines, punching, tearing angles punching, flanging, convex packet punching and integral forming on prepared plate raw materials by using a 160-ton punch through a continuous stamping die to obtain an integrally formed semi-finished product; s1: then, a 60-ton punch is used for punching the frame of the integrally formed semi-finished product through a single punching die to obtain a punched frame product; s3: and continuously using the 60-ton punching machine to perform a size patting process on the punched frame product through the single-punching die, and patting the middle part of the long edge of the punched frame product by using the single-punching die. The production process of the iron frame product solves the technical problems of low production efficiency and poor structural stability of the product produced by the prior art.

Description

Iron frame product production process

Technical Field

The invention relates to the technical field of processing and manufacturing processes of stamped products, in particular to a production process of an iron frame product.

Background

At present, a large number of metal middle frame products are used as middle connecting structural members in mobile phones and vehicle-mounted media entertainment systems. Compare in plastics cell phone case, metal center cell-phone shell both shows high-grade pleasing to the eye, also makes the wearability of cell-phone shell more excellent. Compared with the plastic middle frame connecting piece, the metal middle frame used in the vehicle-mounted media entertainment system has the characteristics of better temperature resistance, corrosion resistance and aging resistance, so that the connected product has higher reliability and is suitable for a severe vehicle-mounted product test flow. But different solutions have long existed for the production process of iron frame products. For example, chinese patent CN104551562B discloses a method for processing a metal middle frame, which includes obtaining a metal middle frame blank by a stamping process, then forming a metal bottom case by die-casting aluminum, and then connecting the metal middle frame blank and the metal bottom case into a whole. For another example, chinese patent CN110355536A discloses an automatic production process of a mobile phone frame, which comprises continuously flattening a metal strip, then cutting and rolling the metal strip to form an arc-shaped structure, and finally punching and bending the metal strip into a rectangular frame. The processing and the molding of center can both be realized to above-mentioned two kinds of schemes.

However, in the processing method disclosed in chinese patent CN104551562B, a user needs to perform stamping and then die-casting, and since the production rhythm of the die-casting process is slow, and the die-casting product obtained by die-casting needs to perform secondary processing to perform processes such as polishing, deburring and shaping, the production efficiency of the middle frame product is further affected. In addition, in the automatic production process disclosed in chinese patent CN110355536A, the metal frame of the mobile phone is continuously bent into a rectangular frame by a metal strip, and this kind of process can cause the metal frame to have an open edge, which affects the structural stability of the metal pattern, so that this kind of automatic production process cannot be applied to the processing production of the metal middle frame of the vehicle-mounted product.

Disclosure of Invention

Therefore, it is necessary to provide a production process of an iron frame product to solve the technical problems of low production efficiency and poor structural stability of the produced product in the prior art mentioned in the background art.

The invention relates to a production process of an iron frame product, which comprises the following steps: s1: firstly, respectively carrying out processes of marking lines, punching, tearing angles, flanging, convex packet punching and integral forming on prepared plate raw materials by using a 160-ton punch press through a continuous stamping die to obtain an integrally formed semi-finished product; s2: then, a 60-ton punch is used for punching the frame of the integrally formed semi-finished product through a single punching die to obtain a punched frame product; s3: and continuously using the 60-ton punching machine to perform a size patting process on the punched frame product through the single-punching die, and patting the middle part of the long edge of the punched frame product by using the single-punching die.

Furthermore, before the sheet material enters the continuous stamping process, the hardness, the thickness, the width and the appearance of the sheet material need to be measured and checked, and all detection data need to be recorded and stored.

Furthermore, after the inspection work of the plate raw material is finished, a process of debugging a mold is needed; the die debugging process comprises die erecting, material erecting and over-leveling.

Furthermore, the flatness of the plate raw material after the flattening process is up to 0.2 mm.

Further, the line width of the position of the imprinting line is 0.1mm, and the depth of the imprinting line is 0.1 mm.

Furthermore, tearing angles need to be processed on two sides of a positioning block arranged on the iron frame product.

Furthermore, a tearing angle needs to be processed between every two edges of the vertical frame arranged on the iron frame product.

Furthermore, the bottom frame of the iron frame product needs to be processed into a plurality of strip-shaped convex hulls.

Further, the product after the size beating process needs to be subjected to a degreasing process; the degreasing process comprises an inserting procedure and a cleaning procedure.

In summary, the production process of the iron frame product of the invention firstly uses a 160-ton punch press to continuously punch the plate raw material, so as to complete the processes of marking lines, punching, tearing angle punching, flanging, convex packet punching and integral forming on the plate raw material; then, using a 60-ton punch press to perform single-punch processing and beating size processing on the semi-finished product obtained in the process; thereby processing and manufacturing an iron frame product with the bottom frame 1 and the vertical frame 2. In the prior art, the mullion 2 which is vertical and enclosed on the bottom frame 1 needs to be processed by die-casting or continuous bending and welding; by the production process of the iron frame product, structures such as an imprinting line, a punching hole, a tearing angle punching, a flanging edge, a convex hull and the like can be processed in advance on the plate raw material by a continuous stamping processing method. The imprinting line is beneficial to positioning and production traceability of products; the punching can unify the processing direction of the product, and the technical defect caused by subsequent processing on the vertical position of the side of the product is avoided; the tearing angle can facilitate the bending of the product out of the required positioning block and the direct 90-degree folding from the plane range of the bottom frame 1 to obtain the mullion 2; moreover, four edges of the vertical frame 2 can be tightly attached and enclosed by presetting tearing angles with reasonable sizes; thereby solved prior art and need through the die-casting shaping or welded connection shaping and the technical problem that production efficiency is low that leads to. In addition, the embossing step in the continuous stamping process can enhance the structural strength of the bottom frame 1, thereby reducing the possibility of product deformation. Furthermore, the frame punching process in the middle of the bottom frame 1 is performed in a single punching die arranged on a 60-ton punching machine, so that the deformation degree of a product can be controlled. If the process of blanking and forming the stamping frame is completed in the process of continuous stamping, the deformation degree of the product is too large, and the defects of incapability of bending and forming or large bending size difference occur in the process of bending and uniformly forming the product. Furthermore, a 60-ton punching machine with a beating size is introduced after the frame punching process, so that the deformation degree of the product can be further controlled; the defect that the qualified rate is influenced due to the outward expansion of the middle size of the product is avoided. Therefore, the production process of the iron frame product solves the technical problems of low production efficiency and poor structural stability of the product produced by the prior art.

Drawings

FIG. 1 is a schematic flow chart of a production process of an iron frame product according to the present invention;

FIG. 2 is a schematic structural diagram of an iron frame product manufactured by the present invention;

FIG. 3 is a schematic structural view of an iron frame product manufactured by the present invention in another direction;

fig. 4 is a schematic diagram of a partially enlarged structure of an iron frame product manufactured by using the method.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, the present invention relates to a process 1 for producing an iron frame product, which comprises the following steps:

s1: firstly, respectively carrying out processes of marking lines, punching, tearing angles, flanging, convex packet punching and integral forming on prepared plate raw materials by using a 160-ton punch press through a continuous stamping die to obtain an integrally formed semi-finished product;

s2: then, a 60-ton punch is used for punching the frame of the integrally formed semi-finished product through a single punching die to obtain a punched frame product;

s3: and continuously using the 60-ton punching machine to perform a size patting process on the punched frame product through the single-punching die, and patting the middle part of the long edge of the punched frame product by using the single-punching die.

Further, please continue to refer to fig. 2 and fig. 3; an iron frame product comprising: the device comprises a hollow bottom frame 1 and a vertical frame 2 vertically connected to the periphery of the bottom frame 1; the bottom frame 1 has a plurality of imprinting lines 101, a plurality of convex hulls 102, and a plurality of positioning blocks 103. The plurality of imprinting lines 101 are uniformly distributed on the bottom frame 1; a plurality of convex hulls 102 are distributed on the surface of the bottom frame 1; a plurality of the positioning members 103 are uniformly distributed around the bottom frame 1. The mullion 2 is provided with a plurality of through holes 201 and a plurality of salient points 202; the through holes 201 are uniformly distributed on the side surface of the vertical frame 2; a plurality of the salient points 202 are evenly arranged around the vertical frame 2. In addition, a plurality of tearing openings 3 are arranged between the positioning block 103 and the vertical frame 2.

The iron frame product is a middle frame product commonly used in a vehicle-mounted media entertainment system, and a part of mobile phone middle frames have similar shapes. The iron frame product can be manufactured by the production process. Specifically, the plate material is checked to determine whether the plate material meets the production requirements of the iron frame product. More specifically, the hardness of the plate material was measured using a vickers hardness tester, and whether the hardness thereof was in the range of 150 to 200 was judged by the material hardness standard of SUS 403. And then, respectively measuring the thickness of the plate by using a micrometer and the width of the plate by using a caliper, and judging whether the thickness is within a preset size requirement range. Then, a section of plate raw material is intercepted to check the flatness of the plate raw material, and whether the flatness is within a preset flatness requirement range is judged. Then, the surface appearance of the material was examined in detail to determine whether the plate material had defects such as white spots, white lines, indentations, and scratches. And finally, recording and storing all the test results for tracing.

Further, after the above-mentioned inspection work of the plate material is completed, the preparation work of the die adjustment needs to be continued. Specifically, the die debugging comprises die erecting, material erecting and over-leveling. The die setting process is to properly set the connecting stamping die and the single stamping die on a 160-ton punching machine and a 60-ton punching machine respectively. The operator visually checks whether the position of the mold is correct, whether the screws are locked, and whether the upper and lower molds are aligned. And then, the plate raw materials are placed on the material frame steadily, and the positions of the plate raw materials are adjusted to finish the process of material frame. The material rack comprises a material rack base which can be fixed on the ground and a material rack turntable which can rotate around the axis of the material rack base; the plate raw materials are placed on the material rack turntable, so that the punching machine can automatically take the materials. Then, the plate material drawn out of the material rack needs to be processed by a leveling machine before entering the 160 ton press. The leveling machine can level the plate raw materials wound with the supplied materials so that the flatness of the plate raw materials meets the requirement of a stamping process. Specifically, it is possible to preset the flatness of the product to 0.2mm at the maximum.

Further, the flattened sheet material from the leveler is first fed into a continuous press die provided in a 160 ton press. The continuous stamping die is used for stamping and printing the plate raw materials; the line width of the position of the marking line is 0.1mm, the depth of the position of the marking line is 0.1mm, and the back surface of the position of the marking line cannot be protruded. Specifically, the marking line can be used for pre-marking subsequent processing parts of the product so as to increase the error traceability of the subsequent processing technology; in addition, the marking line can serve another product assembled with the marking line, and the mounting point of the product is marked in advance. And then, the continuous stamping die continuously punches the plate raw material for multiple times, and the punching process comprises the step of processing and manufacturing through holes arranged on the bottom frame 1 and the vertical frame 2 of the iron frame product. And then, the continuous stamping die continues to perform the process of punching and cutting the tearing angle on the sheet material. The tearing angles include tearing angles located at both sides of each positioning block 103 and tearing angles between long sides and short sides of the mullion 2. And then, continuously turning the part of the plate raw material, of which the tearing angle is punched, by the continuous stamping die. In the part folding process, each positioning block 103 is bent to a predetermined position, and the periphery of the mullion 2 is folded to be perpendicular to the bottom frame 1. Because the two sides of the positioning block 103 are both pre-punched with tear angles, when the positioning block 103 is folded, the root thereof cannot be torn. Similarly, the mullion 2 is pre-blanked between each edge with a tear angle that facilitates the mullion 2 being folded to form a closed quadrilateral. Specifically, please refer to fig. 4, wherein fig. 4 is a schematic diagram of a partially enlarged structure of an iron frame product manufactured by the present invention. As shown in fig. 4, two sides of a connection portion between the positioning block 103 and the bottom frame 1 are provided with tearing angles, which are beneficial to bending the low block 103 to be perpendicular to the bottom frame 1 without root fracture. Further, the continuous stamping die is used for processing the convex hull of the plate raw material. The strip-shaped convex hull 102 arranged on the bottom frame 1 is beneficial to enhancing the structural strength of the bottom frame 1, and the bottom frame 1 is prevented from deforming in the subsequent forming process. In addition, the protruding points 202 provided on the mullion 2 also need to be processed in this step; the raised points 202, in addition to enhancing the structural strength of the mullion 2, may also be used as locating points for subsequent locating. And finally, carrying out final forming processing on the plate raw material by the continuous stamping die, wherein all parts which are not bent in place are uniformly bent and folded in the step.

Further, the semi-finished material produced from the continuous stamping die needs to be turned around by the user to a 60 ton press and processed further using a single stamping die. Specifically, the single-punch die needs to perform incoming punch frame processing on a semi-finished material so as to form a large through hole in the middle of the bottom frame 1. The single-punch die needs to punch from the bottom frame 1 to the direction of the vertical frame 2, so that burrs of punched parts accord with the orientation of the bottom frame 1 to the vertical frame 2, and the defect that articles are scraped due to burrs of products is avoided.

Further, the iron frame product is easy to deform in the frame punching process of the single-punching die. Since the part of the bottom frame 1 punched and blanked in the frame punching process is far larger than the rest of the material, the deformation of the bottom frame in the frame punching process is difficult to avoid. That is, the middle material of the product is punched after the product is punched, so that the middle position of the long side of the iron frame product tends to expand outwards, and the middle position of the bottom frame 1 tends to be larger in size. Therefore, the single-punch die can be continuously used for carrying out beating size processing on the punched product. Specifically, a single-punch die can be used for beating the middle part of the long side of the punched frame product, so that the size of the part is beaten to be within a preset qualified size value range.

Furthermore, after the product is subjected to the frame punching processing technology, a user needs to use the paperboard and the foam cotton to turn over the product so as to prevent the product from being scratched or deformed. Specifically, the product after the foam cotton is punched on the frame can be integrally wound and then placed into a cardboard box for circulation.

Further, the product with the size of one beat needs to be subjected to a degreasing process; the degreasing process comprises an inserting procedure and a cleaning procedure. The insert process is to adjust the distance between the cleaning frames according to the length and the width of the product to be cleaned so that the product is stably inserted into the cleaning frames. Specifically, a user can specifically customize the cleaning racks with different heights and different intervals according to the structural size of the produced product; then, the distance between the division bars is adjusted according to the actual size of the product before the insertion sheet, and the product is prevented from being scratched due to shaking in the subsequent cleaning process. In addition, the cleaning process is to place the inserted products into a cleaning assembly line for cleaning. Specifically, the user can set a preset cleaning parameter with reference to a parameter table of the cleaning machine, and regularly check the water temperature, replace the cleaning liquid, the pure water, and the like. Finally, the user can adjust the parameters of the cleaning machine according to the state of the product after cleaning.

Furthermore, after the product is subjected to the degreasing process, a user can further check the appearance of the product. Specifically, after the product is cleaned, a user can use the dyne pen to test the oil stain of the product, judge whether the oil stain meets the requirement or not, and then check whether the color difference of the product meets the requirement or not. Then, a sampling inspection is performed on the full size of the product and a full inspection is performed on the flatness of the product. And packaging the qualified products by using a plastic uptake box and then warehousing for storage.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The production process of the iron frame product is characterized by comprising the following steps of:

2. The process for producing an iron frame product according to claim 1, wherein: before the sheet material enters the continuous stamping process, the hardness, the thickness and the width of the sheet material need to be measured and the appearance needs to be checked, and all detection data need to be recorded and stored.

3. The process for producing an iron frame product according to claim 2, wherein: after the inspection work of the plate raw material is finished, a process of debugging a die is needed; the die debugging process comprises die erecting, material erecting and over-leveling.

4. The process for producing an iron frame product according to claim 3, wherein: the flatness of the plate raw material processed by the over-leveling procedure is 0.2mm at most.

5. The process for producing an iron frame product according to claim 1, wherein: the line width of the position of the marking line is 0.1mm, and the depth of the marking line is 0.1 mm.

6. The process for producing an iron frame product according to claim 1, wherein: the two sides of a positioning block arranged on the iron frame product need to be processed with tearing angles.

7. The process for producing an iron frame product according to claim 1, wherein: a tearing angle needs to be processed between every two edges of the vertical frame arranged on the iron frame product.

8. The process for producing an iron frame product according to claim 1, wherein: the bottom frame of the iron frame product needs to be processed with a plurality of strip-shaped convex hulls.

9. The process for producing an iron frame product according to claim 1, wherein: the product after the process of beating size needs to be subjected to a degreasing process; the degreasing process comprises an inserting procedure and a cleaning procedure.