Production process of full-bevel fine blanking seal valve plate with inner hole

Abstract

The application discloses a production process of a full-bevel fine blanking sealing valve plate with an inner hole, which comprises edge cutting, corner folding, inclined hole punching and bevel blanking; the edge cutting is used for cutting off redundant waste materials; the corner folding is that an upper die bending punch is cut into a shape with an angle on one side, a lower die bending block cooperates with the upper die bending punch to make the same angle, and a pre-cut material is processed into a shape with a certain angle with a material belt by the upper die bending punch and the lower die bending block; the inclined hole punching is that an inner inclined hole punch is adopted to make the valve plate blank form an inner hole bevel; and the bevel blanking is that an outer bevel punch is used for bevel punching to make the valve plate blank form an outer bevel; the bevel punching process adopted by the application maintains the original general stamping principle, guarantees the service life of a die part, changes the angle of a processed material in the die, combines a force source special for fine blanking machining, guarantees that the material is fully clamped by the die in the machining process, and thus the high-precision size and appearance requirement of a product are achieved.

Description

Technical Field

[0001] This invention relates to a manufacturing process for a sealing valve plate, specifically a manufacturing process for a precision-stamped sealing valve plate with a fully inclined inner bore. Background Technology

[0002] Sealing valve plates are used in automotive gas flow control units and affect engine power output and normal driving. The inner hole and outer shape of the product are at a certain angle to the plane to ensure the opening and closing of the mechanism and the air flow. To ensure product performance, its size and shape are relatively difficult to achieve and not easy to use traditional stamping methods.

[0003] The original process consisted of 5 steps, such as Figure 1 As shown, traditional valve plate processing involves complex procedures, typically requiring five steps (wire cutting of the blank, machining and positioning, machining of the outer bevel, machining of the inner hole into a beveled hole, and grinding of the outer bevel and the inner bevel). This complexity makes it unsuitable for mass production. Furthermore, during processing, a 0.5mm thickness allowance is needed for the outer ring and inner hole of the blank for grinding, leading to material waste. Because the process involves multiple steps, the blank needs to be clamped multiple times during processing, requiring adjustment after each clamping. Skipping this step results in a low yield of valve plates. Summary of the Invention

[0004] The technical problem to be solved by this invention is a production process for a precision-stamped sealing valve plate with a fully inclined inner hole. The inclined punching process maintains the original ordinary stamping principle and ensures the service life of the mold parts: the material to be processed is changed at an angle inside the mold, and combined with the unique force source of the precision blanking machine, the material is fully clamped by the mold during the processing to achieve the high-precision dimensions and appearance requirements of the product. The mold is a continuous mold, and the punching surface of the precision blanking machine is 100% smooth, without the presence of cracks, and can punch out angled inner diameters and inclined surfaces. The lateral force of precision blanking is large, which requires the mold to have a certain strength, and punching inclined holes and inclined surfaces requires the mold and material strip to have even better strength.

[0005] The present invention is achieved through the following technical solution: a manufacturing process for a precision-stamped sealing valve plate with a fully inclined outer surface and inner hole, including edge trimming, angle bending, oblique hole punching, and oblique blanking;

[0006] Among them, trimming: is used to remove excess waste material to prepare for angle forming and facilitate bending. Specifically, trimming is performed using a fine blanking machine. The waste material after trimming is on the ejector block of the lower die. After the fine blanking machine finishes shearing, the ejector mechanism pushes the waste material out of the cavity of the bending block of the lower die, and then it is blown out of the die surface by the air duct frame installed on the side of the die for collection.

[0007] Folding Angle: Prepare an upper die and a lower die. An upper die bending punch is set inside the upper die, and a lower die bending insert is set inside the lower die. The upper die bending punch is located directly above the lower die bending insert. The upper die bending punch is side-cut into an angled shape. The lower die bending insert works with the upper die bending punch to make the same angle. The pre-cut material is processed by the upper die bending punch and the lower die bending insert into a shape with a certain angle to the strip.

[0008] Slanted hole punch: An internal slanted hole punch is used to form an internal slanted surface in the valve plate blank. A waste product collection device is configured at the slanted hole punching station. The waste is blown away by an air source with an air nozzle. Waste product collectors are set on both sides of the station. The waste product collectors are in line with the airflow direction and have the function of blocking the falling material.

[0009] Inclined blanking: Prepare an external inclined punch and an ejector device. Use the external inclined punch to perform an inclined punch to form an inclined shape on the valve blank. At the same time as the valve blank is completed, the ejector device ejects the finely punched valve blank. A waste product collection device is set up at the inclined blanking station. The waste and product are blown away by an air source with an air nozzle. Waste product collection devices are set on both sides of the station. The waste product collection devices are in line with the airflow direction and have the function of blocking the falling material.

[0010] As a preferred technical solution, in the edge trimming step, considering the strength of the punch, the edge trimming can only be done in a half-arc shape, half-arc shape, so that the shearing force can be balanced and the valve plate blank is not easily deformed.

[0011] As a preferred technical solution, in the bending angle step, the tilt angle between the upper die bending punch and the lower die bending insert relative to the horizontal plane is adjustable within the range of 0 degrees to 20 degrees.

[0012] As a preferred technical solution, in the steps of punching oblique holes and feeding oblique surfaces, the waste product collection device is connected to the conveying device, and then the waste product is transported to the screening machine in conjunction with the conveying device. The screening machine filters out the waste and the product is screened into the toolbox.

[0013] As a preferred technical solution, an idle rotation step is provided between the edge trimming station and the corner bending station to improve the structural strength of the mold.

[0014] As a preferred technical solution, the strip is provided with multiple positioning holes to ensure the positioning accuracy of the strip within the mold, thereby improving the precision and consistency of the strip.

[0015] The beneficial effects of this invention are: 1. The blank does not need to be thickened, thus avoiding waste of blank thickness; the product can achieve 100% smooth punching surface without grinding, resulting in high product utilization;

[0016] 2. During processing, the blank is fed into each station sequentially by the conveyor belt, eliminating the need for multiple clamping operations. A single clamping operation results in gradual shaping.

[0017] 3. Short production cycle, high output, and improved product manufacturing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This refers to the workstation diagram in existing technology;

[0020] Figure 2 This is a diagram of the die-cutting station for the oblique punching strip of the present invention. Detailed Implementation

[0021] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0023] like Figure 2 As shown, the manufacturing process of a precision-stamped sealing valve plate with a fully inclined inner hole according to the present invention includes edge trimming, angle bending, oblique hole punching, and oblique blanking.

[0024] Among them, trimming: is used to remove excess waste material to prepare for angle forming and facilitate bending. Specifically, trimming is performed using a fine blanking machine. The waste material after trimming is on the ejector block of the lower die. After the fine blanking machine finishes shearing, the ejector mechanism pushes the waste material out of the cavity of the bending block of the lower die, and then it is blown out of the die surface by the air duct frame installed on the side of the die for collection.

[0025] Folding Angle: Prepare an upper die and a lower die. An upper die bending punch is set inside the upper die, and a lower die bending insert is set inside the lower die. The upper die bending punch is located directly above the lower die bending insert. The upper die bending punch is side-cut into an angled shape. The lower die bending insert works with the upper die bending punch to make the same angle. The pre-cut material is processed by the upper die bending punch and the lower die bending insert into a shape with a certain angle to the strip.

[0026] Slanted hole punch: An internal slanted hole punch is used to form an internal slanted surface in the valve plate blank. A waste product collection device is configured at the slanted hole punching station. The waste is blown away by an air source with an air nozzle. Waste product collectors are set on both sides of the station. The waste product collectors are in line with the airflow direction and have the function of blocking the falling material.

[0027] Inclined blanking: Prepare an external inclined punch and an ejector device. Use the external inclined punch to perform an inclined punch to form an inclined shape on the valve blank. At the same time as the valve blank is completed, the ejector device ejects the finely punched valve blank. A waste product collection device is set up at the inclined blanking station. The waste and product are blown away by an air source with an air nozzle. Waste product collection devices are set on both sides of the station. The waste product collection devices are in line with the airflow direction and have the function of blocking the falling material.

[0028] In the edge trimming step, considering the strength of the punch, the edge trimming can only be done in a half-arc shape, half-arc shape. Only by trimming half of the edge can the shearing force be balanced and the valve plate blank not easily deformed.

[0029] In the bending angle step, the tilt angle between the upper die bending block and the lower die bending block relative to the horizontal plane is adjustable from 0 degrees to 20 degrees, thus ensuring the structural strength and stamping quality of the valve plate during the stamping process.

[0030] In the process of punching oblique holes and feeding inclined surfaces, the waste product collection device is connected to the conveying device, which then transports the product to the screening machine. The screening machine filters out the waste, and the product is screened into the toolbox. The entire production line requires no manual labor; it is fully automated from valve plate blank positioning to finished product. The products produced have high precision, high output, and low cost (no grinding required).

[0031] To serve as a transition, a idling step is provided between the trimming station and the corner bending station, which improves the structural strength of the mold.

[0032] In this embodiment, the strip is provided with multiple positioning holes to ensure the positioning accuracy of the strip in the mold, thereby improving the accuracy and consistency of the strip.

[0033] The beneficial effects of this invention are: 1. The blank does not need to be thickened, thus avoiding waste of blank thickness; the product can achieve 100% smooth punching surface without grinding, resulting in high product utilization;

[0034] 2. During processing, the blank is fed into each station sequentially by the conveyor belt, eliminating the need for multiple clamping operations. A single clamping operation results in gradual shaping.

[0035] 3. Short production cycle, high output, and improved product manufacturing efficiency.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A manufacturing process for a precision-stamped sealing valve plate with a fully beveled outer surface and inner bore, characterized in that: This includes trimming, angle bending, punching oblique holes, and bevel blanking. Trimming removes excess material to prepare for angle forming and facilitates bending. Specifically, a fine blanking machine is used for trimming. The trimmed waste is placed on the lower die ejector block. After the fine blanking machine finishes shearing, the ejector mechanism pushes the waste out of the cavity of the lower die's bending insert block, and then it is collected by a ductwork frame installed on the side of the die. Angle bending involves preparing an upper and lower die. The upper die has an upper bending punch, and the lower die has a lower bending insert block. The upper die bending punch is located directly above the lower die bending insert block. The upper die bending punch is side-cut into an angled shape, and the lower die bending insert block, in conjunction with the upper die bending punch, creates the same angle. The pre-cut material is processed by the upper die bending punch and the lower die bending insert block to form a shape similar to the strip material. Fixed-angle shape; Inclined hole punching: An internal inclined hole punch is used to form an internal inclined surface on the valve blank. A waste product collection device is configured at the inclined hole punching station. An air source with an air nozzle blows away the waste. Waste product collectors are set on both sides of the station. The waste product collectors conform to the airflow direction and have the function of blocking and dropping materials; Inclined surface unloading: An external inclined surface punch and an ejector device are prepared. The external inclined surface punch is used to perform inclined punching to form an external inclined surface on the valve blank. At the same time as the valve blank is completed with the inclined punching, the ejector device ejects the finely punched valve blank. A waste product collection device is configured at the inclined surface unloading station. An air source with an air nozzle blows away the waste and products. Waste product collection devices are set on both sides of the station. The waste product collection devices conform to the airflow direction and have the function of blocking and dropping materials; In the edge trimming step, considering the strength of the punch, the edge trimming can only be done in half-arc and half-arc shapes. Only by trimming half and half at a time can the shearing force be balanced and the valve plate blank not easily deformed. In the bending angle step, the tilt angle between the upper die bending punch and the lower die bending insert relative to the horizontal plane can be adjusted within the range of 0 degrees to 20 degrees. In the process of punching the inclined hole and feeding the inclined surface, the waste product collection device is connected to the conveying device, and then the conveying device transports the waste to the screening machine. The screening machine filters out the waste and the product is screened into the toolbox. An idle rotation step is provided between the edge trimming station and the corner bending station to improve the structural strength of the mold. The strip has multiple positioning holes, which ensure the positioning accuracy of the strip within the mold and improve the precision and consistency of the strip.

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