A bending extrusion forming die

Abstract

The utility model provides a bending extrusion forming die, comprising an upper die assembly and a lower die assembly that cooperate with each other, a bending extrusion forming structure is arranged between the upper die assembly and the lower die assembly, and the bending extrusion forming structure comprises an upper die bending punch for pre-bending and bending downward the bending edge of a workpiece and a lower die extrusion forming punch for extruding and forming the flanging of the workpiece; wherein, the upper die bending punch pre-bends the bending edge of the workpiece downward, and when the upper die bending punch cooperates with the lower die extrusion forming punch, the bending edge is bent downward and extruded and formed. By arranging the upper die bending punch and the lower die extrusion forming punch, the bending edge is bent downward and formed, and the flanging is also extruded and formed, making the entire processing process more efficient, greatly saving time and material costs, and improving production efficiency, thereby avoiding the problems caused by multiple bending processes, effectively reducing manufacturing costs and improving production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a bending extrusion molding mold. Background Art

[0002] When designing a bending die, if there are two surfaces to be bent, the normal die structure cannot be bent once, and a single-process die needs to be added, which increases the die cost and reduces production efficiency;

[0003] As shown in the attached figure of the instruction manual Figure 12-14 As shown, 1' is the workpiece, Fig.12 As shown, the workpiece 1' is subjected to the stretching, corner cutting and punching process by the first set of dies; Fig.13 As shown, the workpiece 1' is subjected to an upward bending process by a second set of dies; Fig.14 As shown, the workpiece 1' is subjected to a downward bending process by means of a third set of dies. The workpiece 1' needs to be processed by three sets of dies to form a finished product, which increases the die cost and reduces the production efficiency.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a bending extrusion molding structure to overcome the shortcomings of the prior art. After the mold is bent, the material is piled up and hard extruded to achieve the shape of the product, which reduces the upward bending process, reduces manufacturing costs and improves production efficiency.

[0006] A bending and extrusion molding die designed for this purpose comprises an upper mold assembly and a lower mold assembly that cooperate with each other, and is characterized in that: a bending and extrusion molding structure is provided between the upper mold assembly and the lower mold assembly, and the bending and extrusion molding structure comprises an upper mold bending punch for pre-bending and bending downward the bending edge of the workpiece, and a lower mold extrusion molding punch for flanging and extruding the workpiece; wherein, the upper mold bending punch pre-bends the bending edge of the workpiece downward, and when the upper mold bending punch cooperates with the lower mold extrusion molding punch, the bending edge is bent downward and the flanging is extruded.

[0007] The downward pre-bending angle of the upper die bending punch to the bending edge is b, and the downward pre-bending angle b is 20°≤b≤45°.

[0008] The upper die assembly comprises an upper die pressing plate, and the upper die bending punch is located at one side of the upper die pressing plate.

[0009] The upper die bending punch is provided with a pushing portion, which protrudes from the upper die pressing plate; when the die is closed, the pushing portion pushes the bending edge downward for pre-bending.

[0010] The lower die extrusion forming punch is provided with a boss, and the upper die bending punch is provided with a slot matched with the boss. When the bending edge is pre-bent downward, the flange contacts the boss.

[0011] The flange is provided with an opening, and the opening is in contact with the boss.

[0012] The boss is an arc-shaped structure.

[0013] The lower die assembly includes a lower pad and a lower die plate that cooperates with the upper die pressing plate, and the lower die plate is arranged on the lower pad.

[0014] The lower die extrusion forming punch is mounted on the lower pad and is located on one side of the lower die plate.

[0015] The lower die assembly also includes a stripper pin for ejecting and forming the workpiece.

[0016] A bending and extrusion molding die in the above-mentioned embodiment includes an upper mold assembly and a lower mold assembly that cooperate with each other, and a bending and extrusion molding structure is provided between the upper mold assembly and the lower mold assembly. The bending and extrusion molding structure includes an upper mold bending punch for pre-bending and bending downward the bending edge of the workpiece, and a lower mold extrusion molding punch for flanging and extruding the workpiece; wherein, the upper mold bending punch pre-bends the bending edge of the workpiece downward, and when the upper mold bending punch cooperates with the lower mold extrusion molding punch, the bending edge is bent downward and flanging is extruded. By setting an upper die bending punch and a lower die extrusion forming punch, a one-time bending and extrusion forming of the workpiece is achieved, thereby avoiding the problems caused by multiple bending processes, effectively reducing manufacturing costs and improving production efficiency. Specifically, the upper die pressing plate and the lower die plate cooperate with each other, and after the upper die pressing plate presses the workpiece, the upper die bending punch touches the bending edge to pre-bend the bending edge downward. When the upper die bending punch cooperates with the lower die extrusion forming punch, the bending edge is bent downward and the flange is also extruded and formed, making the entire processing process more efficient. There is no need to perform a sequential upward bending process, which greatly saves time and material costs and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is an exploded view of the upper die assembly, the lower die assembly and the bending extrusion molding structure in one embodiment of the utility model.

[0020] Figure 2 This is an assembly diagram of the bending extrusion molding structure in one embodiment of the utility model.

[0021] Figure 3 This is an exploded view of the bending extrusion molding structure in one embodiment of the utility model.

[0022] Figure 4 It is a cross-sectional view of the assembly of the bending extrusion molding structure in one embodiment of the utility model.

[0023] Figure 5 This is a schematic diagram of the downward pre-bending of a workpiece in one embodiment of the utility model.

[0024] Figure 6 It is a schematic diagram of the workpiece forming structure in one embodiment of the utility model.

[0025] Figure 7 This is a cross-sectional view of the overall mold in one embodiment of the utility model.

[0026] Figure 8 This is an exploded view of the upper mold assembly, the lower mold assembly and the workpiece in one embodiment of the utility model.

[0027] Fig. 9 This is a diagram of a workpiece in a downward pre-bending state in one embodiment of the utility model.

[0028] Fig.10 This is a diagram of the workpiece forming state in one embodiment of the utility model.

[0029] Fig.11 This is a schematic diagram of the workpiece structure in one embodiment of the utility model.

[0030] Figure 12-14 They are schematic diagrams of workpiece processing and forming. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0032] like Figure 1-Figure 11As shown, a bending extrusion molding die is provided, comprising an upper mold assembly 1 and a lower mold assembly 2 that cooperate with each other, a bending extrusion molding structure 3 is arranged between the upper mold assembly 1 and the lower mold assembly 2, the bending extrusion molding structure 3 comprises an upper mold bending punch 301 for pre-bending and bending downward the bending edge a1 of the workpiece a, and a lower mold extrusion molding punch 302 for extruding the flange a2 of the workpiece a; wherein, the upper mold bending punch 301 pre-bends the bending edge a1 of the workpiece a downward, and when the upper mold bending punch 301 cooperates with the lower mold extrusion molding punch 302, the bending edge a1 is bent downward and the flange a2 is extruded.

[0033] By setting the upper die bending punch 301 and the lower die extrusion forming punch 302, a one-time bending and extrusion forming of the workpiece is achieved, thereby avoiding the problems caused by multiple bending processes, effectively reducing the manufacturing cost and improving the production efficiency. Specifically, the upper die pressing plate 101 and the lower die plate 202 cooperate with each other. After the upper die pressing plate 101 presses the workpiece a, the upper die bending punch 301 touches the bending edge a1 and pre-bends the bending edge a1 downward. When the upper die bending punch 301 cooperates with the lower die extrusion forming punch 302, the bending edge a1 is bent downward and the flange a2 is also extruded and formed, making the entire processing process more efficient. There is no need to perform a sequential upward bending process, which greatly saves time and material costs and improves production efficiency.

[0034] Further, if Figure 5 and Fig. 9 As shown, the downward pre-bending angle of the upper die bending punch 301 to the bending edge a1 is b, and the downward pre-bending angle b is 20°≤b≤45°.

[0035] Specifically, the downward pre-bending angle b of the upper die bending punch 301 to the bending edge a1 is a key parameter, which directly affects the pre-bending degree of the bending edge a1, and further affects the subsequent bending and extrusion forming process. The downward pre-bending angle b is 20°, 25°, 30°, 35°, 40°, or 45°; preferably, the downward pre-bending angle b is 35°.

[0036] Further, if Figure 1 and Figure 7 As shown, the upper die assembly 1 includes an upper die pressing plate 101 , and an upper die bending punch 301 is located on one side of the upper die pressing plate 101 .

[0037] Furthermore, the upper die assembly 1 further includes an upper die base 102 , and the upper die pressing plate 101 and the upper die pressing plate 101 are fixedly mounted on the upper die base 102 .

[0038] Furthermore, the upper mold assembly 1 further includes an upper foot 103 and an upper supporting plate 104 . The upper foot 103 is mounted on the upper mold base 102 , and the upper supporting plate 104 is mounted on the upper foot 103 .

[0039] Further, if Figure 2-Figure 5 , Figure 8 and Fig. 9 As shown, a pushing portion 3011 is provided on the upper die bending punch 301, and the pushing portion 3011 protrudes from the upper die pressing plate 101; when the die is closed, the pushing portion 3011 pushes the bending edge a1 downward to pre-bend.

[0040] Specifically, the pushing portion 3011 on the upper die bending punch 301 is located on the outside of the upper die pressing plate 101 and protrudes outward when the mold is closed. Its main function is to pre-bend the bending edge a1 downward during the mold closing process, thereby preparing for the subsequent formal bending. This can help shorten the time of the entire bending process and improve production efficiency, because the bending has started in the mold closing stage, which can avoid wasting time between the two steps of mold closing and bending, making the entire production process smoother; at the same time, pre-bending in advance can also ensure the quality of bending, because the bending edge has been preliminarily processed at this stage, which can prevent large errors from occurring during the formal bending process.

[0041] Further, if Figure 2-Figure 5 , Figure 8 and Fig. 9 As shown, a boss 3021 is provided on the lower die extrusion forming punch 302 , and a slot 3012 matching with the boss 3021 is provided on the upper die bending punch 301 . When the bending edge a1 is pre-bent downward, the flange a2 contacts with the boss 3021 .

[0042] Specifically, by utilizing the cooperation between the boss 3021 and the slot 3012, the flange a2 is pre-positioned on the boss 3021, thereby improving the molding quality and efficiency during the extrusion molding process and avoiding unnecessary uneven deformation during the extrusion molding process.

[0043] Further, if Figure 1-Figure 5 As shown, an opening a21 is provided on the flange a2, and the opening a21 is in contact with the boss 3021.

[0044] Furthermore, the boss 3021 is an arc-shaped structure.

[0045] Specifically, the arc-shaped boss 3021 can make the workpiece a more stable and reliable during processing, and increase the service life of the boss 3021.

[0046] Further, if Figure 1 and Figure 7As shown, the lower mold assembly 2 includes a lower pad 201 and a lower mold plate 202 that cooperates with the upper mold pressing plate 101, and the lower mold plate 202 is arranged on the lower pad 201.

[0047] Specifically, the lower pad 201, as a part of the lower mold assembly 2, plays a basic role and is usually responsible for supporting and fixing the position of the lower mold plate 202. This ensures that the lower mold plate 202 is always kept in the correct position during the production process, thereby ensuring the accuracy and quality of the product.

[0048] Further, if Figure 1 and Figure 7 As shown, the lower die extrusion forming punch 302 is installed on the lower pad 201 and is located on one side of the lower die plate 202 .

[0049] Further, if Figure 6 As shown, the lower die assembly 2 also includes a stripping pin 203 for ejecting the formed workpiece a.

[0050] Specifically, the function of the ejector pin 203 is to promptly push the formed workpiece a out of the cavity of the lower template 202 after the extrusion molding is completed, so as to avoid the workpiece a staying in the cavity for too long, resulting in unstable molding or deformation.

[0051] Further, if Figure 1 and Figure 7 As shown, the lower die assembly 2 also includes a lower die base 204, a lower pad 205 and a lower supporting plate 206, the lower pad 205 is mounted on the lower supporting plate 206, the lower die base 204 is mounted on the lower supporting plate 206, and the lower pad 201 is mounted on the lower die base.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0057] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A bending extrusion forming die, comprising an upper die assembly (1) and a lower die assembly (2) that cooperate with each other, characterized in that: A bending extrusion molding structure (3) is provided between the upper die assembly (1) and the lower die assembly (2), and the bending extrusion molding structure (3) comprises an upper die bending punch (301) for pre-bending and bending downwardly the bending edge (a1) of the workpiece (a), and a lower die extrusion molding punch (302) for extruding and molding the flange (a2) of the workpiece (a); wherein the upper die bending punch (301) pre-bends the bending edge (a1) of the workpiece (a) downwardly, and when the upper die bending punch (301) cooperates with the lower die extrusion molding punch (302), the bending edge (a1) is bent downwardly and the flange (a2) is extruded.

2. The bending extrusion forming die according to claim 1, characterized in that: The downward pre-bending angle of the upper die bending punch (301) to the bending edge (a1) is b, and the downward pre-bending angle b is 20°≤b≤45°.

3. The bending extrusion forming die according to claim 1, characterized in that: The upper die assembly (1) comprises an upper die pressing plate (101), and the upper die bending punch (301) is located on one side of the upper die pressing plate (101).

4. The bending extrusion forming die according to claim 3, characterized in that: The upper die bending punch (301) is provided with a pushing portion (3011), and the pushing portion (3011) protrudes from the upper die pressing plate (101); when the die is closed, the pushing portion (3011) pushes the bending edge (a1) downward to pre-bend.

5. The bending extrusion forming die according to claim 1, characterized in that: The lower die extrusion forming punch (302) is provided with a boss (3021), the upper die bending punch (301) is provided with a slot (3012) that cooperates with the boss (3021), and when the bending edge (a1) is pre-bent downward, the flange (a2) contacts the boss (3021).

6. The bending extrusion forming die according to claim 5, characterized in that: The flange (a2) is provided with an opening (a21), and the opening (a21) is in contact with the boss (3021).

7. The bending extrusion forming die according to claim 6, characterized in that: The boss (3021) is an arc-shaped structure.

8. The bending extrusion forming die according to claim 3, characterized in that: The lower die assembly (2) comprises a lower pad (201) and a lower die plate (202) that cooperates with the upper die pressing plate (101); the lower die plate (202) is arranged on the lower pad (201).

9. The bending extrusion forming die according to claim 8, characterized in that: The lower die extrusion forming punch (302) is mounted on the lower pad (201) and is located on one side of the lower die plate (202).

10. The bending extrusion forming die according to claim 1, characterized in that: The lower die assembly (2) also includes a stripping pin (203) for ejecting and forming the workpiece (a).

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