A die structure for automatically and precisely applying stamping oil to a precision stamping die

Abstract

The present invention relates to a die structure for automatically and precisely applying stamping oil to a precision stamping die, which is applicable to applying an appropriate amount of lubricating oil at a precise position during the precision stamping of a thick stainless steel flange, and is also applicable to applying lubricating oil during the precision stamping of thick plates of steel, copper, and aluminum; the specific structure consists of an upper die oil groove sleeve and an extended upper die; an upper die oil groove sleeve with a first oil filling ring groove is adopted, and it cooperates with the extended upper die to complete the function of automatically and precisely applying stamping oil; the components include an upper die oil groove sleeve (1), an extended upper die (2), and a first oil filling ring groove (5).

Description

Technical Field

[0001] The present invention relates to a die structure for automatically and precisely applying stamping oil to a precision stamping die, which is applicable to applying an appropriate amount of lubricating oil at a precise position during the precision stamping of thick stainless steel flanges, and is also applicable to applying lubricating oil during the precision stamping of thick plates of steel, copper, and aluminum. Background Art

[0002] Special stamping oil is required for the precision stamping of thick stainless steel plates, and this type of stamping oil is relatively expensive. Currently, a relatively thick layer of stamping oil is brushed on both sides of the blank before stamping, and a large amount of stamping oil remains on both the workpiece and the waste after stamping. However, stainless steel workpieces do not require stamping oil for rust prevention, and the large amount of remaining stamping oil causes waste and environmental pollution. According to the shape of the cutting edge of the precision stamping die, this solution sets up a structure for adding lubricating oil inside the die, making the amount of stamping oil applied more precise and the position more accurate, while not adding lubricating oil in other areas, achieving the purpose of saving stamping oil, reducing labor, lowering costs, and improving environmental friendliness. Summary of the Invention

[0003] The purpose of the present invention is to propose a die structure for automatically and precisely applying stamping oil to a precision stamping die, aiming to directly apply the precision stamping lubricating fluid to the cutting edge area of the stamping die through the cooperation between each oil groove and the oil filling hole, realizing the selective and precise supply of lubricating oil, and achieving the purpose of saving lubricating oil and reducing environmental pollution.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A die structure for automatically and precisely applying stamping oil to a precision stamping die includes an upper die oil groove sleeve and an extended upper die. The inner cavity of the upper die oil groove sleeve has a first oil filling ring groove, and stamping oil is injected into the first oil filling ring groove through a first oil filling hole. The large inner cavity of the upper die has a large inner cavity oil filling ring groove of the upper die, and the large inner cavity oil filling ring groove of the upper die is connected through an oil passage connecting small hole and a fourth oil filling hole, and stamping oil is injected into the large inner cavity oil filling ring groove of the upper die through the fourth oil filling hole. The small hole inner cavity of the upper die has a small hole oil filling ring groove of the upper die, and the oil ring groove is communicated with the fourth oil filling hole through a connecting oil passage. The upper die small hole has a process hole, and a small hole plug is installed in the process hole with interference fit.

[0005] Further, the first oil filling ring groove is also communicated with a first oil filling hole, a second oil filling hole, and a third oil filling hole.

[0006] Further, the inner cavity of the upper die oil groove sleeve simultaneously has the first oil filling ring groove, the second oil filling ring groove, and the third oil filling ring groove. The first oil filling ring groove is also connected to the third oil filling hole, the second oil filling ring groove is communicated with the fifth oil filling hole, and the third oil filling ring groove is connected to the fourth oil filling hole.

[0007] Further, the cross-section of the first oil filling ring groove is one of a semi-circular shape, a triangular oil filling ring groove, a rectangular oil filling ring groove, and a trapezoidal oil filling ring groove. The radius of the semi-circle of the cross-section of the first oil filling ring groove is 1 mm - 16 mm, the side length range of the triangular oil filling ring groove is 1 mm - 12 mm, the side length range of the rectangular oil filling ring groove is 1 mm - 10 mm, the upper side length range of the trapezoidal oil filling ring groove is 1 mm - 10 mm, and the height of the trapezoidal oil filling ring groove is 1 mm - 12 mm.

[0008] Further, the center distance between the first oil filling ring groove, the second oil filling ring groove, and the third oil filling ring groove is 2 mm - 32 mm, and the overlapping length range of the first oil filling ring groove, the second oil filling ring groove, and the third oil filling ring groove is 1 mm - 10 mm. Description of the Drawings

[0009] Figure 1 It is a schematic cross-sectional view of the oil filling hole of the upper die and the upper die oil groove sleeve. For clear expression, the positions of the upper die and the upper die oil groove sleeve in the figure are interchanged. The same applies hereinafter.

[0010] Figure 2 It is a schematic diagram of the oil filling hole and the oil groove of the upper die oil groove sleeve.

[0011] Figure 3 It is a schematic assembly diagram of the upper die and the upper die oil groove sleeve.

[0012] Figure 4 It is a schematic structural diagram of the upper die oil groove sleeve.

[0013] Figure 5 It is a schematic cross-sectional view of the upper die structure.

[0014] Figure 6 It is a schematic cross-sectional view of oil filling of the first oil filling ring groove, the small hole oil filling ring groove of the upper die, and the large inner cavity oil filling ring groove of the upper die at the relative position of the upper die and the upper die oil groove sleeve.

[0015] Figure 7 It is a schematic diagram of the optional cross-section of the oil filling ring groove, and shows that the stamping oil in the first oil filling ring groove at the relative position of the upper die and the upper die oil groove sleeve flows out to the inner cavity wall in the upper die oil groove sleeve.

[0016] Figure 8 It is a schematic diagram of the positions of the upper die, the upper die oil groove sleeve, the punch, and the ejector rod in the mold. Detailed Embodiments

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] A die structure for automatically and precisely applying stamping oil to a precision stamping die, including an upper die oil groove sleeve (1) and an extended upper die (2). The inner cavity (10) of the upper die oil groove sleeve of the upper die oil groove sleeve (1) has a first oil filling ring groove (5). The first oil filling ring groove (5) is injected with stamping oil (21) through a first oil filling hole (3). When the extended upper die (2) closes the first oil filling ring groove (5), the stamping oil (21) is injected into the first oil filling ring groove (5). The amount of the stamping oil (21) is determined by the size of the first oil filling ring groove (5). When the extended upper die (2) does not close the first oil filling ring groove (5), the stamping oil (21) flows out of the first oil filling ring groove (5) to the periphery of the inner cavity (10) and the end face (20) of the upper die oil groove sleeve, so that the stamping oil (21) is distributed at the die cutting edge. When the extended upper die (2) descends for stamping, the stamping oil (21) can be well lubricated. The large inner cavity (11) of the extended upper die (2) has a large inner cavity oil filling ring groove (19). The inner cavity of the small hole (12) of the extended upper die (2) has a small hole oil filling ring groove (15). The stamping oil (21) enters the large inner cavity oil filling ring groove (19) through a through oil passage connecting small hole (18) via a fourth oil filling hole (17). A large hole punch (25) closes and opens the large inner cavity oil filling ring groove (19). The stamping oil (21) enters the small hole oil filling ring groove (15) through a through connecting oil passage (16) via the fourth oil filling hole (17). A small hole ejector rod (26) opens and closes the small hole oil filling ring groove (15). A process hole (14) is provided for machining the connecting oil passage (16). In order to prevent the stamping oil (21) in the small hole oil filling ring groove (15) from flowing out of the process hole (14), a small hole plug (13) is installed in the process hole (14) with interference fit.

[0019] In an alternative embodiment, the first oil filling ring groove (5) is also connected to a first oil filling hole (3), a second oil filling hole (4), and a third oil filling hole (6). When the length of the first oil filling ring groove (5) is relatively large, the three holes are filled with oil simultaneously to meet the oil filling speed requirement.

[0020] In an alternative embodiment, the inner cavity (10) of the upper die oil groove sleeve has the first oil filling ring groove (5), the second oil filling ring groove (7) and the third oil filling ring groove (8) at the same time. The first oil filling ring groove (5) is also connected to the third oil filling hole (6). The second oil filling ring groove (7) communicates with the fifth oil filling hole (9). The third oil filling ring groove (8) is connected to the fourth oil filling hole (27). This solution enables the lengthened upper die (2) to be better guided when running in the upper die oil groove sleeve (1).

[0021] In an alternative embodiment, the cross-section of the first oil filling ring groove (5) is one of a semi-circular shape, a triangular oil filling ring groove (22), a rectangular oil filling ring groove (23) and a trapezoidal oil filling ring groove (24). The radius of the semi-circle of the cross-section of the first oil filling ring groove (5) is 1 mm - 16 mm. The side length range of the triangular oil filling ring groove (22) is 1 mm - 12 mm. The side length range of the rectangular oil filling ring groove (23) is 1 mm - 10 mm. The upper side length range of the trapezoidal oil filling ring groove (24) is 1 mm - 10 mm. The height of the trapezoidal oil filling ring groove (24) is 1 mm - 12 mm.

[0022] In an alternative embodiment, the center distance between the first oil filling ring groove (5), the second oil filling ring groove (7) and the third oil filling ring groove (8) is 2 mm - 32 mm. The overlapping length (28) range of the first oil filling ring groove (5), the second oil filling ring groove (7) and the third oil filling ring groove (8) is 1 mm - 10 mm.

[0023] The improvement of the present invention lies in the overall structure, wherein the control method is the prior art. For the rest not described in detail, they are all well-known technologies to those skilled in the art.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0025] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A die structure for automatically and precisely applying stamping oil to a precision stamping die, which has the function of automatically and precisely applying an appropriate amount of precision stamping oil, and is characterized in that The structure consists of an inner cavity oil filling ring groove of the upper die oil groove sleeve, a large hole oil filling ring groove of the upper die, and a small hole oil filling ring groove part; the inner cavity (10) of the upper die oil groove sleeve (1) of the upper die oil groove sleeve has a first oil filling ring groove (5), and the first oil filling ring groove (5) injects stamping oil (21) through a first oil filling hole (3). The large inner cavity (11) of the extended upper die (2) has a large inner cavity oil filling ring groove (19) of the upper die. The large inner cavity oil filling ring groove (19) of the upper die is connected through an oil passage to a small hole (18) and a fourth oil filling hole (17). The fourth oil filling hole (17) injects stamping oil (21) into the large inner cavity oil filling ring groove (19) of the upper die. The inner cavity of the small hole (12) in the extended upper die (2) has a small hole oil filling ring groove (15) of the upper die. The oil ring groove (15) is communicated with the fourth oil filling hole (17) through a connecting oil passage (16). The small hole (12) of the upper die has a process hole (14), and a small hole plug (13) is press-fitted in the process hole (14).

2. The die structure for automatically and precisely applying stamping oil to a precision stamping die according to claim 1, characterized in that The first oil filling ring groove (5) is also communicated with a second oil filling hole (4).

3. The die structure for automatically and precisely applying stamping oil to a precision stamping die according to claim 1, characterized in that The inner cavity (10) of the upper die oil groove sleeve simultaneously has the first oil filling ring groove (5), a second oil filling ring groove (7), and a third oil filling ring groove (8). The first oil filling ring groove (5) is also connected to a third oil filling hole (6). The second oil filling ring groove (7) is communicated with a fifth oil filling hole (9). The third oil filling ring groove (8) is connected to a fourth oil filling hole (27).

4. The die structure for automatically and precisely applying stamping oil to a precision stamping die according to claim 1, characterized in that The cross-section of the first oil filling ring groove (5) is one of a semi-circular shape, a triangular oil filling ring groove (22), a rectangular oil filling ring groove (23), and a trapezoidal oil filling ring groove (24). The radius of the semi-circle of the cross-section of the first oil filling ring groove (5) is 1 mm - 16 mm. The side length range of the triangular oil filling ring groove (22) is 1 mm - 12 mm. The side length range of the rectangular oil filling ring groove (23) is 1 mm - 10 mm. The upper side length range of the trapezoidal oil filling ring groove (24) is 1 mm - 10 mm. The height of the trapezoidal oil filling ring groove (24) is 1 mm - 12 mm.

5. The die structure for automatically and precisely applying stamping oil to a precision stamping die according to claim 3, characterized in that The center distance between the first oil filling ring groove (5), the second oil filling ring groove (7), and the third oil filling ring groove (8) is 2 mm - 32 mm. The overlap length (28) range of the first oil filling ring groove (5), the second oil filling ring groove (7), and the third oil filling ring groove (8) is 1 mm - 10 mm.

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