Electromagnetic valve sealing plate and iron core integrated stamping and stretching equipment and technology and sealing plate and iron core integrated structure

Abstract

The invention discloses an integrated stamping and drawing process for a sealing plate and an iron core of an electromagnetic valve, which is characterized in that a sealing plate and iron core integrated product is finally formed by stamping and cutting a material belt, so that the production efficiency is improved, the production quality is improved, and the labor cost is reduced. The invention further discloses integrated stamping and stretching equipment for the electromagnetic valve sealing plate iron core, and the integrated stamping and stretching technology for the electromagnetic valve sealing plate iron core in the previous embodiment is applied to the integrated stamping and stretching equipment. The invention further discloses a sealing plate and iron core integrated structure which is manufactured through the electromagnetic valve sealing plate and iron core integrated stamping and stretching process in the first embodiment, the assembly link of the sealing plate and the iron core is omitted, the assembly time is saved, and the production cost is greatly saved.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valve sealing plate iron core forming, and in particular to an electromagnetic valve sealing plate iron core integrated stamping and stretching device, a process and an integrated sealing plate iron core structure. Background Art

[0002] In the prior art, the sealing plate and the iron core of the solenoid valve are manufactured separately and then riveted or welded together. The sealing plate is formed by stamping and cutting, and the iron core (including the head and the columnar part) is formed by lathe turning. However, the iron core formed by turning has a high production cost, a high manufacturing difficulty, and a low yield rate. Secondly, there is a problem of poor concentricity. Therefore, in order to ensure the sealing of the iron core, it is also necessary to turn an annular groove on the columnar part, and put a sealing ring in the annular groove during assembly. In addition, the overall volume of the solenoid valve, especially in household appliances, is small, and the size of its sealing plate iron core is even smaller. Whenever technicians think of changing the iron core processing technology, because stamping will cause the material plate to wrinkle and crack, they will first exclude the stamping method. Summary of the invention

[0003] According to an embodiment of the present invention, a solenoid valve sealing plate iron core integrated stamping and stretching process is provided, wherein the iron core comprises a head and a columnar portion; the process comprises the following steps: S1: Punch and cut the material strip, and evenly punch out circular plates on the material strip, and the circular plates are connected to both sides of the material strip through connecting ribs; S2: Punching the circular plate upward to form a convex portion; S3: initially stretching the raised portion so that the raised portion is columnar; S4: stretching the raised portion for a second time to reduce the diameter of the raised portion and increase the height; S5: Repeat step S4 at least three times; S6: stretching and rounding the two sides of the raised part; S7: further stretch the fillet to make the fillet radius smaller; S8: Repeat step S7 at least once; S9: Maintaining the diameter of the lower end of the protrusion, roughing the upper end of the protrusion to preliminarily form the head and columnar part of the core; S10: Maintain the diameter of the columnar part and perform fine punching on the head; S11: repeat step S10 at least once; S12: Shaping of the columnar part and the head; S13: Repeat S12 at least once to complete the shaping of the columnar part and the head; S14: Punching and cutting the circular plate so that the shape of the circular plate is consistent with the shape of the electromagnetic valve sealing plate.

[0004] According to another embodiment of the present invention, a solenoid valve sealing plate iron core integrated stamping and stretching device is provided, which applies the solenoid valve sealing plate iron core integrated stamping and stretching process of the first embodiment, comprising: Material belt conveying tooling, the material belt conveying tooling is used to convey the material belt; A first punching tool, which is connected to the material belt conveying tool and is used to punch out circular plates from the material belt; A first punching tool, the first punching tool and the first blanking tool are arranged adjacent to each other and are used to punch a convex portion upwards on the circular plate; A second stamping tool, the second stamping tool and the first stamping tool are arranged adjacent to each other, and the second stamping tool is used to stamp the protrusion into a columnar shape; A third stamping tool, the third stamping tool and the second stamping tool are arranged adjacent to each other, and the third stamping tool is used to stamp the protrusion into a core shape; The second punching tool is arranged adjacent to the third punching tool, and the third punching tool is used for punching out the size of the sealing plate on the circular plate.

[0005] Furthermore, the second stamping tool includes at least eight stamping stations.

[0006] Furthermore, the third stamping tool comprises at least one rough punching station, at least two fine punching stations and at least one shaping station.

[0007] The integrated stamping and stretching equipment and process for the sealing plate and iron core of the solenoid valve according to the embodiment of the present invention adopts an integrated stamping manufacturing process with a high degree of automation, which reduces processing costs and labor costs; greatly improves the yield rate; has high concentricity, improves the performance of the solenoid valve, and does not require grooving in the columnar part of the iron core, reducing the use of sealing rings.

[0008] According to another embodiment of the present invention, there is provided a sealing plate and iron core integrated structure, which is manufactured by the solenoid valve sealing plate and iron core integrated stamping and stretching process of the first embodiment.

[0009] The integrated structure of the sealing plate and the iron core according to the embodiment of the present invention eliminates the assembly steps of the sealing plate and the iron core, saves assembly time, and greatly saves production costs.

[0010] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the internal structure of the electromagnetic valve sealing plate and iron core integrated stamping and stretching equipment in a top view according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified image of point A; Figure 3 It is a schematic diagram of a cross-sectional view of the internal structure of a solenoid valve sealing plate and iron core integrated stamping and stretching device according to an embodiment of the present invention; Figure 4 is a schematic top view of a material strip during processing according to an embodiment of the present invention; Figure 5 is a schematic side view of a material strip during processing according to an embodiment of the present invention; Figure 6 for Figure 5 A magnified view of point B; Figure 7 A schematic diagram of a sealing plate and iron core integrated structure according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure after the sealing plate and the iron core are assembled together in the prior art. DETAILED DESCRIPTION

[0012] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0013] First, the integrated stamping and stretching process of the solenoid valve sealing plate core according to an embodiment of the present invention will be described. The process is used in the technical field of solenoid valve sealing plate core forming and has a wide range of application scenarios.

[0014] like Figures 1 to 7 As shown, according to the first embodiment of the present invention, the integrated stamping and stretching process of the solenoid valve sealing plate iron core, wherein the iron core 1 includes a head 11 and a columnar portion 12; the following steps are included: S1: Punching and cutting the material strip 3, uniformly punching out circular plates 4 on the material strip 3, the circular plates 4 being connected to both sides of the material strip 3 through connecting ribs 5 to prevent adjacent circular plates 4 from affecting each other in the subsequent punching process; S2: Punching the circular plate 4 upward to form a protruding portion 41. At this time, the protruding portion 41 has a relatively low height and a relatively large width (the specific size is designed according to the requirements), which belongs to preliminary punching and stretching; S3: initially stretching the protrusion 41 so that the protrusion 41 is columnar, and the columnar diameter is relatively large and the height is relatively low; S4: stretching the protrusion 41 for a second time, so that the diameter of the protrusion 41 becomes smaller and the height becomes higher; S5: Repeat step S4 at least three times; Steps S2 to S5 are a process of gradually punching and stretching the circular plate 4, so that a uniform deformation can be punched out without breaking. S6: stretching and rounding the two sides of the protrusion 41; S7: further stretch the fillet to make the fillet radius smaller; S8: Repeat step S7 at least once; From steps S6 to S8, the chamfer of the contact area between the protrusion 41 and the circular plate 4 is corrected and formed; S9: Maintaining the diameter of the lower end of the protrusion 41, roughening the upper end of the protrusion 41 to preliminarily form the head 11 and the columnar portion 12 of the core 1; S10: Maintaining the diameter of the columnar portion 12, and performing fine punching on the head portion 11; S11: repeat step S10 at least once; From steps S9 to S11, the head 11 of the core 1 is formed; S12: shaping the columnar portion 12 and the head portion 11; S13: Repeat S12 at least once to complete the shaping of the columnar portion 12 and the head 11; From step S12 to step S13, the overall shaping of the core 1 is completed; S14: Punch and cut the circular plate 4 so that the shape of the circular plate 4 is consistent with the shape of the electromagnetic valve sealing plate 2. At this time, the integrated sealing plate 2 and iron core 1 structure is completed.

[0015] The following is an example of a specific production process to introduce the principles of steps S2 to S13: The first step is to convexly shape the circular plate 4 to prevent wrinkling and tearing; The second step is to stretch the diameter to 19.9mm; The third step is to stretch the diameter to 14.6mm; Step 4: Stretch and shrink the diameter to 11.4mm; Step 5: Stretch and shrink the diameter to 9.1mm; Step 6: Stretch and shrink the diameter to 7.95mm; Step 7: Stretch the root fillet to R=2.0mm. Step 8: Stretch the fillet of the root step to R=1.0mm; Step 9: Stretch the root fillet to R=0.5mm; Step 10: Protect the shape of the thick pier head; Step 11: Protect the shape of the diameter fine pier head 11; The twelfth step is to protect the shape and size of the diameter of the fine pier head 11; Step 13: shaping the columnar diameter and the height of the head 11; Step 14: Take a flat picture.

[0016] Secondly, if Figures 1 to 7 As shown, according to another embodiment of the present invention, a solenoid valve sealing plate iron core integrated stamping and stretching device is provided, which applies the solenoid valve sealing plate iron core integrated stamping and stretching process of the first embodiment, comprising: A material belt conveying tool (prior art, not shown), the material belt conveying tool is used to convey the material belt 3; A first punching tool 6 (existing technology), the first punching tool 6 is connected to the material belt conveying tool, and is used to punch out circular plates 4 from the material belt 3; A first punching tool 7, which is arranged adjacent to the first punching tool 6 and is used to punch a protrusion 41 upwards from the circular plate 4; A second punching tool 8, which is arranged adjacent to the first punching tool 7, and is used to punch the protrusion 41 into a columnar shape; A third punching tool 9, the third punching tool 9 and the second punching tool 8 are arranged adjacent to each other, and the third punching tool 9 is used to punch the protrusion 41 into the shape of the iron core 1; The second punching tool 10 is arranged adjacent to the third punching tool 9 , and the third punching tool 9 is used for punching out the size of the sealing plate 2 on the circular plate 4 .

[0017] Further, if Figures 1 to 3 As shown, in this embodiment, the second stamping tool 8 includes at least eight stamping stations (existing technology) for gradually and evenly forming the columnar protrusion 41.

[0018] Further, if Figure 1 , 3 As shown, in this embodiment, the third stamping tool 9 includes at least one rough punching station (existing technology), at least two fine punching stations (existing technology) and at least one shaping station (existing technology), which are used to shape the head 11 of the core 1 and to shape the core 1 as a whole.

[0019] Above, refer to Figures 1 to 7 The invention describes the integrated stamping and stretching equipment and process for the sealing plate and iron core of an electromagnetic valve according to an embodiment of the present invention. The integrated stamping manufacturing process has a high degree of automation, which reduces processing costs and labor costs; greatly improves the yield rate; has high concentricity, improves the performance of the electromagnetic valve, and does not require grooving in the columnar part of the iron core, reducing the use of sealing rings.

[0020] Secondly, if Figure 7 As shown, according to another embodiment of the present invention, a sealing plate and iron core integrated structure is provided, which is manufactured by the integrated stamping and stretching process of the sealing plate and iron core of the solenoid valve of the first embodiment.

[0021] Above, refer to Figure 7 The integrated structure of the sealing plate and the iron core according to the embodiment of the present invention is described, which eliminates the assembly steps of the sealing plate and the iron core, saves assembly time, and greatly saves production costs.

[0022] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0023] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. An integrated stamping and stretching process for an electromagnetic valve sealing plate iron core, wherein the iron core comprises a head and a columnar portion; characterized in that: The following steps are involved: S1: Punch and cut the material strip, and evenly punch out circular plates on the material strip, and the circular plates are connected to both sides of the material strip through connecting ribs; S2: Punching the circular plate upward to form a convex portion; S3: initially stretching the protrusion so that the protrusion is columnar; S4: stretching the protrusion for a second time to reduce the diameter of the protrusion and increase the height; S5: Repeat step S4 at least three times; S6: stretching and rounding the two sides of the raised portion; S7: further stretching the fillet to reduce the radius of the fillet; S8: Repeat step S7 at least once; S9: maintaining the diameter of the lower end of the protrusion, roughing the upper end of the protrusion to preliminarily form the head and columnar portion of the core; S10: maintaining the diameter of the columnar portion and performing precision punching on the head; S11: repeat step S10 at least once; S12: shaping the columnar portion and the head; S13: Repeat S12 at least once to complete the shaping of the columnar portion and the head; S14: Punching and cutting the circular plate so that the shape of the circular plate is consistent with the shape of the electromagnetic valve sealing plate.

2. An integrated stamping and stretching equipment for sealing plate and core of electromagnetic valve, which uses the integrated stamping and stretching process for sealing plate and core of electromagnetic valve as claimed in claim 1, characterized in that: Include: A material belt conveying tool, wherein the material belt conveying tool is used to convey the material belt; A first punching tool, which is connected to the material strip conveying tool and is used to punch out circular plates from the material strip; a first punching tool, the first punching tool and the first blanking tool are arranged adjacent to each other and are used to punch a convex portion upwards from the circular plate; A second stamping tool, the second stamping tool and the first stamping tool are arranged adjacent to each other, and the second stamping tool is used to stamp the protrusion into a columnar shape; A third stamping tool, the third stamping tool and the second stamping tool are arranged adjacent to each other, and the third stamping tool is used to stamp the protrusion into an iron core shape; The second punching tool is arranged adjacent to the third punching tool, and the third punching tool is used for punching out the size of the sealing plate on the circular plate.

3. The solenoid valve sealing plate and core integrated stamping and stretching equipment according to claim 2, characterized in that: The second stamping tool comprises at least eight stamping stations.

4. The electromagnetic valve sealing plate and core integrated stamping and stretching equipment according to claim 2, characterized in that: The third stamping tool comprises at least one rough punching station, at least two fine punching stations and at least one shaping station.

5. A sealing plate and core integrated structure, characterized in that: The solenoid valve sealing plate and iron core are manufactured by the integrated stamping and stretching process as claimed in claim 1.

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