Arc one-step forming structure

Abstract

The utility model provides an arc one-time forming structure which comprises an upper die assembly and a lower die assembly installed below the upper die assembly, and the upper die assembly and the lower die assembly are limited and guided through upper and lower limiting and guide columns. A male die is installed in the upper die assembly, and an elastic nail assembly penetrates through the male die. A pair of symmetrically-arranged female dies corresponding to the male dies is arranged in the lower die assembly, an ejector block is further arranged between the pair of female dies, a production cavity of an arc-shaped product working procedure piece is formed through the female dies and the male dies, and the bottom of the ejector block is supported through a nitrogen spring. After the upper die assembly and the lower die assembly are assembled, the elastic nail assembly abuts against the ejector block. The elastic nail assembly is installed in the male die in the upper die assembly, the bottom of the ejector block in the lower die assembly is supported through the nitrogen spring, product forming can be achieved, and after product forming is finished, the effect that a product working procedure piece is ejected out and separated from the male die can be achieved; and the arc-shaped structure can be effectively and rapidly formed at a time.

Description

Technical Field

[0001] The utility model relates to the field of sheet metal processing, in particular to the technical field of arc sheet metal forming, and specifically is an arc one-time forming structure. Background Art

[0002] In the production and processing of sheet metal products, there will be a part that requires arc processing. Conventional molds cannot make arcs directly, and arc effects can only be achieved through multiple molds. This not only increases costs due to more processes, but also greatly reduces production efficiency, which has a great impact on the company's production time and production costs. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an arc one-step forming structure to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an arc one-step forming structure, including an upper mold assembly and a lower mold assembly installed below the upper mold assembly, and the upper mold assembly and the lower mold assembly are limited and guided by upper and lower limit stops 12 and guide pillars 19;

[0005] A punch 15 is installed in the upper die assembly, and a spring nail assembly passes through the punch 15;

[0006] A pair of symmetrically arranged concave dies 5 are arranged in the lower die assembly corresponding to the convex die 15, and a top block 11 is arranged between the pair of concave dies 5. The production cavity of the arc-shaped product process part is formed by the concave die 5 and the convex die 15, and the bottom of the top block 11 is supported by a nitrogen spring 9;

[0007] When the upper mold assembly and the lower mold assembly are closed, the spring nail assembly is abutted against the top block 11.

[0008] According to a preferred embodiment, the top block 11 is located at the lowest point of the arc-shaped product process part production cavity.

[0009] According to the preferred solution, an upper mold base 13 and a punch 15 installed below the upper mold base 13 are sequentially arranged in the upper mold assembly along the direction close to the lower mold assembly. The nail assembly passes through the upper mold base 13 and is arranged in the punch 15. The punch 15 is also provided with a mounting hole corresponding to the nail assembly.

[0010] According to the preferred embodiment, the elastic nail assembly includes a screw plug 17, a spring 18 and an elastic nail 16 which are sequentially arranged along the axial direction;

[0011] An upper through hole 21 is provided in the mounting hole in the punch 15 corresponding to the through hole in the upper die seat 13 for inserting the elastic nail assembly, and a lower through hole 22 connected to the upper through hole 21 is provided at the bottom of the mounting hole, the inner diameter of the upper through hole 21 is larger than the inner diameter of the lower through hole 22, and the inner diameter of the lower through hole 22 is smaller than the outer diameter of the screw head of the elastic nail 16.

[0012] According to a preferred embodiment, the inner diameter of the upper through hole 21 is larger than the outer diameter of the screw head of the elastic nail 16 and the spring 18;

[0013] The screw plug 17 is threadedly installed in the die base 13 and inserted into the through hole of the elastic nail assembly.

[0014] According to the preferred solution, the lower mold assembly is provided with a positioning plate 14, a concave mold 5, a lower mold frame 4, a lower mold base 3, a cushion block 2 and a support plate 1 in sequence in a direction away from the upper mold assembly;

[0015] A nitrogen spring 9 is disposed below the top block 11 , and a push rod 10 extending from the top of the nitrogen spring 9 is abutted against the bottom of the top block 11 .

[0016] According to the preferred solution, a group of nitrogen springs 9 are arranged in front and behind the structure of the top block 11;

[0017] Correspondingly, a group of spring nail assemblies is also provided.

[0018] According to a preferred embodiment, an inner guide column 8 is further provided in the lower die base 3 and the top block 11 , and an inner guide sleeve 7 is further provided between the inner guide column 8 and the lower die base 3 .

[0019] According to the preferred solution, the inner guide sleeve 7 is installed in the lower die base 3 via cushion blocks 6 around its periphery.

[0020] According to a preferred embodiment, the top of the top block 11 is surrounded by rounded corners.

[0021] The utility model adopts a method in which a spring nail assembly is installed in a punch in an upper mold assembly, so that the product process parts on the top block can be pressed by the spring nail assembly when the mold is closed; similarly, the bottom of the top block in the lower mold assembly is supported by a nitrogen spring, and the product process parts on the top block can be pressed under the action of the nitrogen spring, which can not only realize the molding of the product, but also realize the effect of ejecting the product process parts and separating them from the punch after the product is formed. The structure is simple, but the operation is convenient, and the arc structure can be effectively and quickly formed at one time, and the production cost is reduced, thereby improving the work efficiency.

[0022] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The display is a front view of the utility model;

[0024] Figure 2 Shown is a left side view of the utility model;

[0025] Figure 3 Shown is a top view of the utility model;

[0026] Figure 4 Shown is a cross-sectional view of the punch in the utility model;

[0027] Description of symbols

[0028] 1. Support plate; 2. Cushion block; 3. Lower die seat; 4. Lower die frame; 5. Concave die; 6. Press plate; 7. Inner guide sleeve; 8. Inner guide pin 9. Nitrogen spring; 10. Ejector rod; 11. Ejector block; 12. Upper and lower limiters; 13. Upper die seat; 14. Positioning plate; 15. Punch; 16. Spring pin; 17. Screw plug; 18. Spring; 19. Guide pin; 20. Product process parts; 21. Upper through hole; 22. Lower through hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0031] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] The utility model provides an arc one-step forming structure, which is used in the arc product forming process. The utility model does not limit the type of arc, but the arc one-step forming structure is particularly suitable for semicircular products.

[0033] In general, the arc one-step forming structure proposed by the utility model mainly includes an upper mold component and a lower mold component. Figure 1 , which shows the arrangement relationship between the upper mold assembly and the lower mold assembly.

[0034] In order to achieve the purpose of forming an arc in one step, the problem in the background technology that in the production and processing of sheet metal products, there will be a part of processing requiring an arc, and conventional molds cannot directly make an arc, and the arc effect can only be achieved through multiple molds. This not only increases the cost due to the additional processes, but also greatly reduces the production efficiency, which has a great impact on the production time and production cost of the enterprise. For this reason, in the technical solution provided in this embodiment, the upper mold assembly and the lower mold assembly are installed below the upper mold assembly, and the upper mold assembly and the lower mold assembly are limited and guided by upper and lower limit stops 12 and guide columns 19. A pair of symmetrically arranged dies 5 are provided in the lower mold assembly corresponding to the punch 15 in the upper mold assembly, and a top block 11 is also provided between the pair of dies 5. The punch 15, the pair of dies 5 and the top block 11 form a molding cavity for accommodating the product process part 20.

[0035] Specifically, Figure 1As shown, since a spring nail assembly is installed in the punch 15 in the upper mold assembly, the product process part 20 on the top block 11 can be pressed by the spring nail assembly after the upper mold assembly and the lower mold assembly are molded together; similarly, the bottom of the top block 11 in the lower mold assembly is supported by the nitrogen spring 9, and the product process part 20 on the top block 11 can be pressed under the action of the nitrogen spring 9, which can not only realize the molding of the product, but also realize the effect of ejecting the product process part 20 and separating it from the punch 15 after the product is formed. The structure is simple, but the operation is convenient, and the arc structure can be effectively and quickly formed at one time, and the production cost is reduced, thereby improving the work efficiency.

[0036] It should be specifically explained that an upper die seat 13 and a punch 15 installed below the upper die seat 13 are sequentially arranged in the upper die assembly along the direction close to the lower die assembly. The elastic nail assembly passes through the upper die seat 13 and is arranged in the punch 15. In order to achieve accurate movement of the elastic nail assembly in the punch 15, a mounting hole is further arranged in the punch 15. The mounting hole is integrally provided with an upper through hole 21 and a lower through hole 22 along the direction from top to bottom, wherein the inner diameter of the upper through hole 21 is larger than the inner diameter of the lower through hole 22.

[0037] like Figure 1 and Figure 4 As shown, since the nail assembly includes a screw plug 17, a spring 18 and a nail 16 arranged in sequence along the axial direction, in order to facilitate the insertion of the entire nail assembly, the upper through hole 21 has the same inner diameter as the through hole in the upper die base 13 for inserting the nail assembly, and the inner diameter of the upper through hole 21 is larger than the outer diameters of the screw head of the nail 16 and the spring 18; then, in order to prevent the nail 16 from slipping out of the punch 15 under the action of the spring 18, the inner diameter of the lower through hole 22 is smaller than the outer diameter of the screw head of the nail 16; in addition, considering the stable output and maintenance of the spring force, the screw plug 17 is threadedly installed in the through hole in the die base 13 for inserting the nail assembly.

[0038] As mentioned above, the positioning plate 14, the die 5, the lower die frame 4, the lower die seat 3, the cushion block 2 and the support plate 1 are arranged in sequence in the lower die assembly along the direction away from the upper die assembly. The top block 11 is arranged between a pair of dies 5 and is also located at the lowest point of the arc-shaped product process part production cavity.

[0039] On this basis, in order to provide stable support for the bottom of the top block 11, a nitrogen spring 9 is arranged below the top block 11, and a push rod 10 extending from the top of the nitrogen spring 9 is abutted against the bottom of the top block 11. In use, a group of nitrogen springs 9 and nail assemblies are preferably arranged in front and behind the structure of the top block 11.

[0040] like Figure 1 and 2As shown, in order to achieve molding accuracy, not only are the upper mold assembly and the lower mold assembly limited and guided by upper and lower limit stops 12 and guide pillars 19, but inner guide pillars 8 are also provided in the lower mold base 3 and the top block 11, and inner guide sleeves 7 are provided between the inner guide pillars 8 and the lower mold base 3. The inner guide sleeve 7 is installed in the lower mold base 3 through pads 6 on all sides; further, rounded structures are provided on all sides of the top of the top block 11 to avoid damage caused by the arc structure during the process.

[0041] In use, the following steps are included:

[0042] During stamping, the power device lifts the entire upper die to separate the upper die from the lower die. At this time, the product process part 20 is placed on the top block 11 and positioned by the positioning plate 14;

[0043] The upper die moves vertically downward under the action of the power device, and the guide column and guide sleeve 19 position and guide the upper die and the lower die. The spring pin 16 presses the product process part 20 on the top block 11 under the action of the spring 18, and the upper die continues to move downward. The punch 15 presses the product process part 20 on the top block 11 under the action of the nitrogen spring 9 under the top block 11 and continues to move downward. The product process part 20 is formed in the space formed by the die 5 and the punch 15. The upper die continues to move downward until the upper and lower limit positions 12 are in contact, reaching the lower dead point of the upper die, and the product molding is completed at this time;

[0044] After the product is formed, the upper mold moves upward under the action of the power device, so that the upper mold is separated from the lower mold. During the process, the ejector block 11 is ejected upward and reset under the action of the nitrogen spring 9, and the product process part 20 is ejected at the same time. Under the action of the spring pin 16, the product process part 20 is separated from the punch 15. At this time, all the movable parts of the mold return to the initial position, and after the product process part 20 is taken out, the next stamping process can be carried out.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A circular arc one-step forming structure, characterized in that: It comprises an upper die assembly and a lower die assembly installed below the upper die assembly, wherein the upper die assembly and the lower die assembly are limited and guided by upper and lower limit stops (12) and guide pillars (19); A punch (15) is installed in the upper die assembly, and a spring nail assembly passes through the punch (15); A pair of symmetrically arranged concave dies (5) are arranged in the lower die assembly corresponding to the convex die (15), and a top block (11) is arranged between the pair of concave dies (5). The production cavity of the arc-shaped product process part is formed by the concave die (5) and the convex die (15), and the bottom of the top block (11) is supported by a nitrogen spring (9); When the upper mold assembly and the lower mold assembly are closed, the spring nail assembly is abutted against the top block (11).

2. The arc one-step forming structure according to claim 1, characterized in that: The top block (11) is located at the lowest point of the arc-shaped product process part production cavity.

3. The arc one-step forming structure according to claim 2, characterized in that: An upper die seat (13) and a punch (15) installed below the upper die seat (13) are sequentially arranged in the upper die assembly along a direction close to the lower die assembly; the elastic nail assembly passes through the upper die seat (13) and is arranged in the punch (15); and the punch (15) is also provided with a mounting hole corresponding to the elastic nail assembly.

4. The arc one-step forming structure according to claim 3, characterized in that: The elastic nail assembly comprises a screw plug (17), a spring (18) and an elastic nail (16) which are sequentially arranged along the axial direction; An upper through hole (21) is provided in the mounting hole in the punch (15) corresponding to the through hole in the upper die seat (13) for inserting the elastic nail assembly, and a lower through hole (22) is provided at the bottom of the mounting hole and is connected to the upper through hole (21). The inner diameter of the upper through hole (21) is larger than the inner diameter of the lower through hole (22), and the inner diameter of the lower through hole (22) is smaller than the outer diameter of the screw head of the elastic nail (16).

5. The arc one-step forming structure according to claim 4, characterized in that: The lower die assembly is provided with a positioning plate (14), a concave die (5), a lower die frame (4), a lower die seat (3), a cushion block (2) and a support plate (1) in sequence in a direction away from the upper die assembly; A nitrogen spring (9) is arranged below the top block (11), and a top rod (10) extending from the top of the nitrogen spring (9) is abutted against the bottom of the top block (11).

6. The arc one-step forming structure according to claim 5, characterized in that: An inner guide column (8) is also provided inside the lower die base (3) and the top block (11), and an inner guide sleeve (7) is also provided between the inner guide column (8) and the lower die base (3).

7. The arc one-step forming structure according to claim 6, characterized in that: The top of the top block (11) is surrounded by rounded structures.

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