Arc rib forming die

Abstract

The utility model relates to an arc rib forming die which comprises an upper die and a lower die and further comprises a die base, the lower die can move in a guiding mode in the vertical direction, a reset spring is arranged between the lower die and the die base, a front side limiting plate is fixed to the front side of the die base, and a rear side limiting plate is fixed to the rear side of the die base. A bending forming cavity is defined by the front side limiting plate, the rear side limiting plate, the upper die forming arc face and the lower die forming arc face, and the lower die is provided with a bending forming station which is fixed by the upper die and moves downwards between the front side limiting plate and the rear side limiting plate. The lower die is further provided with a discharging station which moves upwards under the action of the reset spring so that at least one end of the metal structural part can be located on the upper sides of the front side limiting plate and the rear side limiting plate. According to the arc rib forming die, after bending is finished, a metal component can be conveniently taken down from the lower die.

Description

Technical Field

[0001] The utility model relates to a structural part bending device in the field of mechanical processing, in particular to an arc rib forming die. Background Art

[0002] In the field of mechanical processing, it is often necessary to bend some metal structural parts into arc-shaped structures. The metal structural parts with arc-shaped structures are called arc ribs. In the prior art, bending equipment for metal structural parts with circular cross-sections is more common. For example, an upper mold and a lower mold are set. The upper mold has an upper mold protrusion, and the lower mold has a lower mold concave portion corresponding to the upper mold protrusion. The upper mold protrusion and the lower mold concave portion are provided with arc grooves with corresponding notches. When in use, the metal component to be bent is placed on the lower mold, and the upper mold moves downward. The upper mold protrusion and the lower mold concave portion cooperate to bend the metal component into an arc structure.

[0003] However, some metal structural parts with non-circular cross-sections also have corresponding bending requirements. For example, metal structural parts with trapezoidal or rectangular cross-sections are not suitable for directly setting arc grooves on the upper mold protrusions and lower mold concave parts. For such metal components, front and rear side plates are usually required to limit the deformation of the metal components in the front and rear directions during the bending process. The length direction of the metal components is the left and right direction. The problem with the existing technology is that when the upper mold moves downward and the bending of the component is completed, the metal component will be located between the front and rear side plates, making it inconvenient to remove the metal component from the lower mold, which will affect the bending efficiency of the metal component. Utility Model Content

[0004] The utility model aims to provide an arc rib forming die which can facilitate the metal component to be removed from a lower die after bending.

[0005] In order to solve the above technical problems, the technical solution of a circular arc rib forming die in the utility model is as follows:

[0006] A circular arc rib forming mold comprises an upper mold and a lower mold, the upper mold bottom has an upper mold protrusion, the lower mold top has a lower mold recess arranged corresponding to the upper mold protrusion, the bottom of the upper mold protrusion has an upper mold forming arc surface, and the top of the lower mold recess has a lower mold forming arc surface. The circular arc rib forming mold also includes a mold base, the lower mold can be guided to move along the up and down directions, a reset spring is arranged between the lower mold and the mold base, a front side limit plate is fixed on the front side of the mold base, and a rear side limit plate is fixed on the rear side of the mold base. The front side limit plate, the rear side limit plate, the upper mold forming arc surface and the lower mold forming arc surface form a bending forming cavity, the lower mold has a bending forming station that is moved downward between the front side limit plate and the rear side limit plate by the fixed pressure of the upper mold, and the lower mold also has a unloading station that moves upward under the action of the reset spring so that at least one end of the metal structural part is located on the upper side of the front side limit plate and the rear side limit plate.

[0007] Furthermore, a spring installation groove for installing a reset spring is provided on the lower mold and / or the mold base, and the upper end of the mold base has a base support surface that supports the bottom of the lower mold. When the lower mold is in the bending and forming station, the reset spring is located in the spring installation groove, and the bottom of the lower mold is in contact with the base support surface.

[0008] Furthermore, the spring installation groove is arranged on the mold base, and the base support surface is a horizontally arranged plane.

[0009] Furthermore, a left limit plate and a right limit plate are fixed on the left and right sides of the mold base respectively, and the left limit plate, the right limit plate, the front limit plate and the rear limit plate form a guide channel that cooperates with the lower mold to guide movement along the up and down directions.

[0010] Furthermore, when the lower die is in the bending forming station, the top heights of the left and right limit plates are lower than the heights of both ends of the metal structure, and the top heights of the front and rear limit plates are not lower than the heights of both ends of the metal structure.

[0011] The beneficial effects of the utility model are as follows: in the utility model, the lower die is designed to be able to float up and down. During the bending process of the metal structural part, the metal structural part is placed on the lower die, and the upper die descends, moving the metal structural part and the lower die downward together, so that the metal structural part can be moved between the front limit plate and the rear limit plate. The front limit plate, the rear limit plate, the upper die forming arc surface and the lower die forming arc surface form a bending forming cavity, thereby realizing effective bending of the metal structural part. When the bending is completed, the upper die ascends, and the lower die moves upward under the action of the reset spring, and the lower die lifts the metal structural part to a unloading position with a height higher than the front limit plate and the rear limit plate. At this time, the metal structural part is not stuck between the front limit plate and the rear limit plate, and the staff can easily remove the metal structural part from the lower die, which is convenient for unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of a circular arc rib forming die in the utility model;

[0014] Figure 2 yes Figure 1 AA section view in the figure;

[0015] Figure 3 It is a schematic diagram of the state in which the lower die is in the unloading position after the upper die in the utility model moves upward;

[0016] Description of reference numerals: 1. mold base; 2. spring mounting groove; 3. return spring; 4. base support surface; 5. left side limit plate; 6. lower mold; 7. metal structure; 8. front side limit plate; 9. upper mold; 10. upper mold forming arc surface; 11. lower mold forming arc surface; 12. right side limit plate; 14. rear side limit plate; 15. bending forming cavity; DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0018] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0019] The embodiment of a circular arc rib forming die in the utility model is as follows: Figures 1 to 3 As shown, it comprises an upper die 9 and a lower die 6. The upper die 9 is installed on the pressure head of the press when in use, and the lower die 6 is installed on the base of the press when in use. The upper die bottom has an upper die protrusion, and the lower die top has a lower die concave portion arranged corresponding to the upper die protrusion. The bottom surface of the upper die protrusion is the upper die forming camber 10, and the top surface of the lower die concave portion is the lower die forming camber 11.

[0020] The arc rib forming mold also includes a mold base 1, and a front limit plate 8 and a rear limit plate 14 are fixed on the front and rear sides of the mold base 1, and a left limit plate 5 and a right limit plate 12 are fixed on the left and right sides of the mold base. The lower mold is guided and moved along the up and down directions and assembled between the front limit plate, the rear limit plate, the left limit plate and the right limit plate. A reset spring 3 is arranged between the lower mold and the mold base. In this embodiment, the spring mounting groove 2 is arranged at the upper end of the mold base 1.

[0021] The front limit plate 8, the rear limit plate 14, the upper mold forming arc surface 10 and the lower mold forming arc surface 11 form a bending molding cavity 15. The lower mold 6 has a bending molding station that is moved downward between the front limit plate 8 and the rear limit plate 14 by the fixed pressure of the upper mold. The lower mold also has a unloading station that moves upward under the action of a return spring so that the two ends of the metal structural part 7 are located on the upper side of the front limit plate and the rear limit plate.

[0022] The upper end of the mold base 1 has a base support surface 4 that supports the bottom of the lower mold 6. When the lower mold is in the bending and forming station, the reset spring is located in the spring mounting groove, the bottom of the lower mold is in contact with the base support surface, and the base support surface 4 is a horizontally set plane.

[0023] When the lower die is in the bending forming station, the top heights of the left and right limit plates 5 and 12 are lower than the heights of both ends of the metal structure 7, and the top heights of the front and rear limit plates 8 and 14 are not lower than the heights of both ends of the metal structure.

[0024] In this embodiment, the cross-sectional shape of the metal structural part 7 is a trapezoid. When the metal structural part is bent, when the upper die does not descend, the lower die is at a higher unloading position due to the action of the return spring. At this time, the metal structural part to be bent can be placed on the upper end of the lower die. Subsequently, the upper die descends, the upper die presses the metal structural part and the lower die descends, and the metal structural part and the lower die move between the front limit plate and the rear limit plate, as shown in FIG. Figure 1 As shown, until the lower end of the lower die is supported on the base support surface of the die base, at this time the return spring is completely located in the spring installation groove to prevent the spring from being over-extruded and damaged. As the upper die continues to move downward, the metal structure is bent into an arc structure, as shown in FIG. Figure 3 As shown in the figure, the height of the left and right limit plates is lower than the height of the two ends of the metal structure. In this way, even if the lengths of the metal structure are intersecting, the left and right limit plates will interfere with the metal structure. After the metal structure is bent and formed, the upper die moves upward, and under the action of the return spring, the lower die moves upward to a higher unloading station, such as Figure 3 As shown, at this time, the two ends of the metal structure are located on the upper side of the front limit plate and the rear limit plate, which is convenient for operators to unload by hand.

[0025] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0026] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0027] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A circular arc rib forming die, comprising an upper die and a lower die, wherein the upper die bottom has an upper die protrusion, the lower die top has a lower die concave portion arranged corresponding to the upper die protrusion, the bottom of the upper die protrusion has an upper die forming arc surface, and the top of the lower die concave portion has a lower die forming arc surface, characterized in that: The arc rib forming mold also includes a mold base, the lower mold can be guided and moved in the up and down directions, a reset spring is arranged between the lower mold and the mold base, a front limit plate is fixed on the front side of the mold base, and a rear limit plate is fixed on the rear side of the mold base. The front limit plate, the rear limit plate, the upper mold forming arc surface and the lower mold forming arc surface form a bending forming cavity, and the lower mold has a bending forming station which is moved downward between the front limit plate and the rear limit plate by the fixed pressure of the upper mold, and the lower mold also has a unloading station which moves upward under the action of the reset spring so that at least one end of the metal structural part is located on the upper side of the front limit plate and the rear limit plate.

2. The arc rib forming die according to claim 1, characterized in that: A spring installation groove for installing a reset spring is provided on the lower mold and / or the mold base. The upper end of the mold base has a base support surface that supports the bottom of the lower mold. When the lower mold is in the bending and forming station, the reset spring is located in the spring installation groove, and the bottom of the lower mold is in contact with the base support surface.

3. The arc rib forming die according to claim 2, characterized in that: The spring installation groove is arranged on the mold base, and the base support surface is a horizontally arranged plane.

4. The arc rib forming die according to any one of claims 1 to 3, characterized in that: A left limit plate and a right limit plate are fixed on the left and right sides of the mold base respectively. The left limit plate, the right limit plate, the front limit plate and the rear limit plate form a guide channel that cooperates with the lower mold to guide movement in the up and down directions.

5. The arc rib forming die according to claim 4, characterized in that: When the lower die is in the bending forming station, the top heights of the left and right limit plates are lower than the heights of both ends of the metal structure, and the top heights of the front and rear limit plates are not lower than the heights of both ends of the metal structure.

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