An eccentric hole blanking plate

Abstract

This application discloses an eccentric hole discharge plate, which solves the problem in the design of a cylindrical discharge hole where the material length is between the maximum and minimum diameters of the discharge hole, and the two ends are at the same height of the conical discharge hole when falling. The plate includes a template body with multiple discharge holes, each consisting of an upper conical hole and a lower cylindrical section. The lower end of the conical hole is connected to the upper end of the cylindrical section. The eccentric discharge hole is formed by radially expanding outward from a 180° circumferential region of the conical hole. When the material falls and both ends contact the hole wall of the eccentric discharge hole, the material cannot remain horizontally stuck. Under the action of gravity, the material tends to tilt and become vertical, thus reducing the probability of material jamming.

Description

Technical Field

[0001] This application belongs to the field of blanking molds, and particularly relates to an eccentric hole blanking plate. Background Technology

[0002] In industrial production, blanking dies are indispensable key components in many processing steps, and their performance directly affects production efficiency and product quality. Previously, the blanking hole design of blanking dies mostly adopted a cylindrical structure, specifically a conical hole on the die template with a straight cylindrical section connected below it. The original intention of this design was to leave a certain gap between the straight cylindrical sections to facilitate the installation of a receiving pipe, thereby enabling the smooth collection and transfer of materials.

[0003] However, in actual production applications, when the length of the material is exactly at the midpoint between the maximum and minimum diameters of the discharge hole, and during the descent, both horizontal ends of the material are at the same height of the conical discharge hole, the material is very prone to getting stuck in the discharge hole. Once jamming occurs, it not only halts the current production process but also requires additional time and manpower for troubleshooting, significantly reducing production efficiency and increasing production costs. To solve the jamming problem, directly enlarging the discharge hole as a whole presents several challenges. First, from the perspective of mold strength, the strength of the discharge plate is a key factor in ensuring the normal operation and service life of the mold. Excessively increasing the hole diameter to enlarge the discharge hole would drastically reduce the wall thickness between the conical holes, leading to a significant decrease in the overall strength of the mold. Especially when processing materials with high hardness and impact strength, such as metals, the insufficiently strong discharge plate is easily damaged under frequent discharge impacts, resulting in cracks or even breakage, severely affecting the mold's service life and increasing equipment maintenance and replacement costs. Second, the main purpose of the gap between the straight sections is to connect the discharge pipes to achieve orderly collection and conveying of materials. If the material discharge hole is enlarged overall, the distance between the straight sections will become too short due to the increased hole diameter, making it impossible to properly connect the material discharge pipe. This would disrupt the material collection and transfer process, negatively impacting production. Therefore, the existing technology needs further improvement. Utility Model Content

[0004] This utility model provides an eccentric hole discharge plate, which solves the problem that in the design of a cylindrical discharge hole, when the length of the material is at the midpoint between the maximum and minimum diameter of the discharge hole, and the horizontal ends are at the same height of the conical discharge hole when falling, the material is very easy to get stuck in the hole.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An eccentric hole discharge plate includes a template body with multiple discharge holes. Each discharge hole consists of an upper conical hole and a lower straight cylindrical section. The lower end of the conical hole is connected to the upper end of the straight cylindrical section. The eccentric discharge hole is formed by radially expanding outward from a region of 180° along its circumference. When the material falls and its two ends contact the hole wall of the eccentric discharge hole, the material cannot remain horizontally stuck. Instead, the material tilts and tends to become vertical under the action of gravity, thereby reducing the probability of material jamming.

[0007] In the preferred implementation, the enlarged hole sidewall at the eccentric structure includes a vertical section and an inclined section; when the material falls horizontally, one end of the material in the length direction first contacts the conical hole wall or the inclined section, and the material will tilt and tend to be vertical under the action of gravity to facilitate falling.

[0008] In a preferred implementation, the inclined segment and the vertical segment have an angle between them, which ranges from 30° to 60°.

[0009] In the preferred implementation, the surface of the inclined segment is a curved surface.

[0010] In the preferred implementation, the middle of the inclined segment is high and the two sides are low.

[0011] In the preferred implementation, the height of the inclined segment gradually increases or decreases from one end to the other.

[0012] In a preferred implementation, a friction-reducing coating is provided on the inner wall of the eccentric discharge hole.

[0013] The above structure has the following beneficial effects:

[0014] The eccentric hole blanking plate solves the material jamming problem and ensures the strength of the mold, without adversely affecting the connection of the blanking tube. This allows the material to fall smoothly from the blanking hole into the blanking tube and then be transported to the designated collection location. This avoids material accumulation and scattering caused by blanking tube connection problems, ensuring a clean and orderly production site and improving overall production efficiency and product quality. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of a prior art conical hole blanking plate is shown;

[0017] Figure 2 A schematic diagram of the eccentric hole blanking plate of this application is shown;

[0018] Figure 3 A top view schematic diagram of the eccentric hole blanking plate of this application is shown;

[0019] Figure 4 A cross-sectional structural diagram of an existing eccentric hole blanking plate is shown;

[0020] Label Explanation:

[0021] 1. Template body; 10. Straight cylindrical section; 11. Conical hole; 12. Eccentric material drop hole; 120. Vertical section; 121. Inclined section. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In this utility model, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0026] The present invention will now be described with reference to the accompanying drawings.

[0027] The specific solution adopted is as follows:

[0028] like Figure 2-4 As shown, this utility model provides an eccentric hole material discharge plate, including a template body 1. The template body 1 has multiple material discharge holes, each of which is composed of an upper conical hole 11 and a lower straight cylindrical section 10. The lower end of the conical hole 11 is connected to the upper end of the straight cylindrical section 10. The characteristic feature is that the conical hole 11 expands radially outward in a region of 180° along its circumference to form an eccentric material discharge hole 12. When the material falls and both ends contact the hole wall of the eccentric material discharge hole 12, the material cannot maintain a horizontal jammed state. The material tilts and tends to be vertical under the action of gravity, thereby reducing the probability of material jamming.

[0029] like Figure 1 In traditional cylindrical discharge holes, when the material length is between the maximum and minimum diameters of the discharge hole, and the horizontal ends are at the same height as the conical discharge hole during descent, the contact state between the material and the hole wall results in a force balance, making it prone to getting stuck in the discharge hole. However, in this application, the conical hole 11 of the eccentric discharge plate expands radially outwards within a 180° circumferential region to form an eccentric discharge hole 12. When the material falls and its ends contact the hole wall of the eccentric discharge hole 12, the eccentric structure disrupts the balanced force conditions required for horizontal jamming, preventing the material from maintaining a horizontal state. Under the continuous action of gravity, the material tends to move vertically, thus smoothly passing through the discharge hole, greatly reducing the probability of jamming.

[0030] The eccentric hole blanking plate does not use a method of enlarging the blanking hole as a whole; instead, it expands radially outward in a portion of the conical hole 11 to form an eccentric structure. This locally improved design ensures that the blanking hole effectively prevents material jamming while minimizing the impact on the overall structure of the mold and reducing the weakening of the mold's strength. The main purpose of the reserved gap in the straight section 10 is to fit the blanking tube, enabling the orderly collection and conveying of materials. Traditional methods of enlarging the blanking hole as a whole would cause the distance between the straight sections 10 to become too close due to the increased hole diameter, making it impossible to properly fit the blanking tube. The eccentric structure of the eccentric hole blanking plate is mainly concentrated in the conical hole 11 portion, without affecting the size and position of the straight section 10. Therefore, the distance between the straight sections 10 can be maintained within a suitable range, meeting the requirements for fitting the blanking tube and ensuring smooth material collection and transfer.

[0031] As a preferred embodiment of this application, see [link to application]. Figure 4 The enlarged sidewall at the eccentric structure includes a vertical section 120 and an inclined section 121. When the material falls horizontally, one end of the material along its length will first contact the tapered hole wall or the inclined section 121, causing the material to tilt. Specifically:

[0032] When material falls horizontally, if one end of the material first contacts the wall of the conical hole (the normal conical hole wall in a non-eccentric structure), because the conical hole wall is inclined and the opposite side is a vertical segment 120 that cannot be contacted, the other end of the material will rotate around its center of mass, causing the material to tilt. Only the other end contacts the inclined segment 121 at the bottom. Once the material begins to tilt, its center of gravity will change, and under the continuous action of gravity, the material will rotate further, tending towards a vertical state.

[0033] When the material falls horizontally and one end is closer to the vertical section 120, it will first come into contact with the inclined section 121, causing the material to tilt. As the material tilts, its center of gravity changes, and under the pull of gravity, the material will continue to rotate, gradually tending towards a vertical state.

[0034] The vertical section 120 allows the material to tilt at a larger angle, thus making it more likely to become vertical. If it were all inclined sections 121, although the material would tilt when it first contacts the original conical hole wall, the tilt angle would be smaller, resulting in a smaller force towards verticality. The vertical section 120 can provide an initial positioning function for the falling material, allowing it to enter the effective range of the inclined section 121 more accurately, thereby triggering the tilting and falling process more effectively.

[0035] In a preferred embodiment of this application, the inclined section 121 and the vertical section 120 form an angle ranging from 30° to 60°. When the material falls horizontally and contacts the inclined section 121, the inclined section 121 applies an oblique force to the material. Within this angle range, this force can generate a sufficiently large component perpendicular to the material's axis, thereby forming an effective torque that causes the material to tilt rapidly. If the angle is too small, such as less than 30°, the inclined section 121 is too gentle, resulting in a smaller torque, and the material may not tilt in time, still posing a risk of jamming. If the angle is too large, exceeding 60°, although the torque is larger, the material may tilt too quickly, causing violent collisions with other components or the wall of the discharge hole, affecting the material quality and discharge stability.

[0036] In a preferred embodiment of this application, the surface of the inclined section 121 is a curved surface. When material falls horizontally into the inclined section 121, the curved surface provides smoother contact and guidance for the material. The curved surface design makes the structure of the inclined section 121 more reasonable and the stress distribution more uniform. Under the impact force generated by the falling material, the curved surface can disperse and transfer stress along the tangent direction of the curved surface, avoiding stress concentration in a local area, thereby improving the overall structural strength of the inclined section 121, reducing structural damage caused by stress concentration, such as cracks and fractures, and extending the service life of the material drop plate.

[0037] In a preferred embodiment of this application, the inclined section 121 is higher in the middle and lower on both sides. When one end of the material first contacts the original conical hole wall and tilts, and the other end contacts the inclined section 121 with its higher middle and lower sides, the material will be subjected to a force that slides downwards along the surface of the inclined section 121 due to the height difference. This allows the material to more quickly and smoothly tend towards a vertical state under the action of gravity. In contrast, if the inclined section 121 is a plane, the material may sway or rotate unevenly after contact due to a lack of clear guidance, affecting the falling efficiency.

[0038] In a preferred embodiment of this application, the inclined section 121 gradually increases or decreases in height from one end to the other. The gradually increasing or decreasing height of the inclined section 121 also guides the material to quickly reach a vertical position. When the material comes into contact with the inclined section 121 with its height difference, it tends to move towards the lower end due to the height difference. The inclined section 121 helps the material to reach a vertical position more quickly and smoothly under the influence of gravity.

[0039] In a preferred embodiment of this application, the inner wall of the eccentric discharge hole 12 is provided with a friction-reducing coating, such as a polytetrafluoroethylene (PTFE) coating, which allows the material to pass through the discharge hole more smoothly and reduces problems such as jamming and wear.

[0040] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0041] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An eccentric hole blanking plate comprising a die plate body, a plurality of blanking holes are formed on the die plate body, each blanking hole is composed of an upper tapered hole and a lower straight cylinder section; the lower end of the tapered hole is communicated with the upper end of the straight cylinder section, characterized in that, The conical hole expands radially outward in a 180° range along its circumference to form an eccentric material discharge hole. When the material falls and its two ends contact the hole wall of the eccentric material discharge hole, the material cannot remain horizontally stuck. The material tilts and tends to be vertical under the action of gravity, thereby reducing the probability of material jamming.

2. The eccentric hole blanking plate according to claim 1, characterized in that, The enlarged sidewall at the eccentric structure includes a vertical section and an inclined section. When the material falls horizontally, one end of the material in the length direction first contacts the conical hole wall or the inclined section. The material will tilt and tend to be vertical under the action of gravity to facilitate falling.

3. The eccentric hole blanking plate according to claim 1, characterized in that, The inclined segment and the vertical segment have an angle between them, ranging from 30° to 60°.

4. The eccentric hole blanking plate according to claim 2, characterized in that, The surface of the inclined section is a curved surface.

5. The eccentric hole blanking plate according to claim 2, characterized in that, The middle section is higher than the sides of the sloping section.

6. The eccentric hole blanking plate according to claim 2, characterized in that, The height of the inclined section gradually increases or decreases from one end to the other.

7. The eccentric hole blanking plate according to claim 1, characterized in that, The inner wall of the eccentric discharge hole is coated with a friction-reducing coating.

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