Thick plate arc one-time forming die

Abstract

The utility model provides a thick plate arc one-time forming die. The thick plate arc one-time forming die comprises an upper die unit and a lower die unit arranged below the upper die unit. A male die is installed on the side, close to the lower die unit, in the upper die unit, the periphery of the male die is sleeved with a stripper plate, and the top of the stripper plate abuts against a nitrogen spring arranged in the upper die unit. A supporting base used for containing a product working procedure piece is arranged under the position, corresponding to the male die, in the lower die unit, the supporting base moves up and down along female dies arranged on the periphery under the action of a bottom lifting unit, and positioning plates are arranged on the tops of the female dies along the periphery of the supporting base. And the convex die, the concave die and the support bottom form a forming cavity with an arc-shaped structure. The forming cavity of the arc structure is formed in the upper die unit and the lower die unit through the male die, the female die and the supporting bottom, lossless stripping of an arc product is achieved by combining the nitrogen spring on the top and the lifting unit at the bottom in the discharging process, and on the basis of achieving one-time forming, production efficiency is improved, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of stamping, in particular to the technical field of thick plate arc processing, and specifically is a thick plate arc one-step forming die. Background Art

[0002] In the production and processing of stamping products, for thick plates that require arc processing, multiple processes such as stretching, trimming, and flanging are required to complete. This not only increases costs due to the number of processes, but also greatly reduces production efficiency. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a thick plate arc one-step forming die 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 a thick plate arc one-step forming die, comprising an upper die unit and a lower die unit arranged below the upper die unit;

[0005] A punch 19 is installed on one side of the upper die unit close to the lower die unit, a stripper plate 22 is sleeved around the punch 19, and a nitrogen spring 20 arranged in the upper die unit is abutted against the top of the stripper plate 22;

[0006] A support 5 for placing a product process part 24 is arranged just below the corresponding convex die 19 in the lower die unit. The support 5 moves up and down along the surrounding concave die 4 under the action of the bottom lifting unit. A positioning plate 11 is arranged on the top of the concave die 4 along the surrounding of the support 5.

[0007] An arc-shaped structure forming cavity is formed by the male die 19, the female die 4 and the supporting bottom 5.

[0008] According to a preferred embodiment, a guide column and guide sleeve structure 13 and upper and lower limit stops 14 are provided between the upper mold unit and the lower mold unit on the outside of the molding cavity.

[0009] According to the preferred solution, the upper mold unit is provided with an upper cushion block 17, an upper mold base 18, a backing plate 21 and a stripping plate 22 in sequence along the direction close to the lower mold unit, and the backing plate 21 and the stripping plate 22 are guided to move up and down by the inner guide column 16 and the inner guide sleeve 15 passing through the upper mold base 18;

[0010] A space for accommodating the punch 19 is formed between the upper die seat 18 , the back plate 21 and the stripper plate 22 , and the top of the punch 19 is connected to the upper cushion block 17 and the upper die seat 18 by bolts.

[0011] According to a preferred embodiment, the punch 19 is connected to the upper cushion block 17 and the upper die base 18 via a plurality of bolts, and the plurality of bolts are distributed in various areas on the top of the punch 19 .

[0012] According to a preferred embodiment, a stripping frame 23 is further installed on the outer side of the back plate 21 away from the upper die base 18, and a space for accommodating the stripping plate 22 is formed in the stripping frame 23;

[0013] The stripping plate 22 is provided with rounded corners around its periphery.

[0014] According to the preferred solution, the lower mold unit is provided with a lower pad 1, a lower mold base 2, a hollow pad 3 and a die 4 in sequence along the direction close to the upper mold unit, and a space for accommodating the bottom 5 is formed between the hollow pad 3 and the die 4;

[0015] The bottom lifting unit is arranged on a side of the lower die base 2 away from the upper die unit, and a push rod 7 extends from the top to contact the supporting bottom 5 .

[0016] According to a preferred embodiment, the bottom lifting unit comprises:

[0017] A top plate 6, wherein the top plate 6 is horizontally installed below the lower die base 2 through a column installed in the middle below the lower die base 2;

[0018] A push rod 7, wherein the push rod 7 is vertically connected to the top plate 6, and the top thereof passes through a corresponding through hole in the lower die base 2;

[0019] An inner guide pin 9 and an inner guide sleeve 10, wherein the inner guide pin 9 is installed on the lower die base 2 through the inner guide sleeve 10 and the pressure plate 8, the protruding end of the top of the inner guide pin 9 is placed in the supporting bottom 5, and the bottom passes through the corresponding through hole of the top plate 6.

[0020] According to a preferred embodiment, the bottom lifting unit is coaxially arranged with the supporting base 5 and the punch 19 .

[0021] According to the preferred embodiment, a pair of inner guide pillars 9 are symmetrically arranged on the left and right, and three push rods 7 are evenly spaced around each inner guide pillar 9 to form an equilateral triangle structure supported below the support bottom 5.

[0022] According to the preferred solution, a die frame 12 is further provided in the lower die assembly corresponding to the stripping frame 23, and the die frame 12 is located outside the die 4, and the bottom is connected to the hollow pad 3;

[0023] The inner walls of the die frame 12 and the stripping frame 23 are located on the same vertical line.

[0024] The utility model adopts an arc-shaped structure forming cavity formed by a punch, a die and a bottom support in an upper die unit and a lower die unit, and combines a nitrogen spring at the top and a lifting unit at the bottom to realize non-destructive removal of products with arcs during unloading, thereby improving production efficiency and reducing costs on the basis of realizing one-time molding.

[0025] 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

[0026] Figure 1 The display is a schematic diagram of the structure of the utility model;

[0027] Figure 2 Shown is a left side view of the utility model;

[0028] Figure 3 Shown is a top view of the utility model;

[0029] Figure 4 The display is a partial three-dimensional structural diagram of the utility model;

[0030] Figure 5 Another partial three-dimensional structural diagram of the utility model is shown;

[0031] Description of symbols

[0032] 1. Lower pad; 2. Lower die seat; 3. Hollow pad; 4. Die; 5. Bottom support; 6. Top plate; 7. Ejector rod; 8. Press plate; 9. Inner guide pin 1; 10. Inner guide sleeve 1; 11. Positioning plate; 12. Die frame; 13. Guide pin and guide sleeve; 14. Upper and lower limiters; 15. Inner guide sleeve 2; 16. Inner guide pin 2; 17. Upper pad; 18. Upper die seat; 19. Punch; 20. Nitrogen spring; 21. Back plate; 22. Stripper plate; 23. Stripper frame; 24. Product process parts. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The utility model provides a thick plate circular arc one-step forming die for use in a stamping process. The utility model does not limit the type of the thick plate, but the structure of the thick plate circular arc one-step forming die is particularly suitable for the needs of circular arc processing.

[0037] In general, the thick plate arc one-step forming mold proposed by the utility model mainly includes an upper mold unit and a lower mold unit arranged below the upper mold unit. Figure 1 , which shows the arrangement relationship between the upper mold unit and the lower mold unit arranged below the upper mold unit.

[0038] In order to achieve the purpose of one-time forming of thick plate arcs, the background technology is used to solve the problem that in the production and processing of stamping products, for thick plates that require arcs, multiple processes such as stretching, trimming, and flanging are required to complete the processing, which not only increases the cost due to the many processes but also greatly reduces the production efficiency. For this reason, in the technical solution provided in this embodiment, an arc-shaped structure forming cavity is formed by a punch 19, a die 4 and a bottom support 5 in the upper mold unit and the lower mold unit. When unloading, the nitrogen spring 20 at the top and the bottom lifting unit are combined to achieve non-destructive demolition of products with arcs, thereby improving production efficiency and reducing costs on the basis of achieving one-time forming.

[0039] like Figure 1As shown, the upper mold unit is provided with an upper pad 17, an upper mold base 18, a back plate 21 and a stripper plate 22 in sequence along the direction close to the lower mold unit, and a space for accommodating the punch 19 is formed between the upper mold base 18, the back plate 21 and the stripper plate 22. The top of the punch 19 is connected to the upper pad 17 and the upper mold base 18 by bolts, wherein the punch 19 is connected to the upper pad 17 and the upper mold base 18 by multiple bolts, and the multiple bolts are distributed in various areas on the top of the punch 19, which is conducive to ensuring that the force in various directions of the punch 19 is consistent during the up and down movement, and effectively ensuring the product molding effect.

[0040] In this embodiment, considering that the product process part 24 has an arc structure, in order to facilitate non-destructive stripping, a stripping plate 22 is sleeved around the punch 19, and a structure that cooperates with the stripping plate 22 and the nitrogen spring 20 is provided in the upper mold unit, wherein the nitrogen spring 20 is installed on the upper pad 17, and the bottom is supported on the stripping plate 22 through the back plate 21, wherein a plurality of nitrogen springs 20 are provided along the four sides of the punch 19;

[0041] In order to improve the precision, on the one hand, a stripping frame 23 is installed on the outer side of the back plate 21 away from the upper mold base 18, and a space for accommodating the stripping plate 22 is formed in the stripping frame 23, and the stripping plate 22 is provided with chamfered corners on all sides to improve the installation efficiency and prevent damage; on the other hand, the back plate 21 and the stripping plate 22 are guided up and down by the inner guide column 16 and the inner guide sleeve 15 that pass through the upper mold base 18, thereby improving the precision of the internal structure of the upper mold unit during movement.

[0042] It should be specifically explained that the lower mold unit provided in this embodiment is provided with a base 5 for placing the product process part 24 directly below the corresponding upper mold unit punch 19, and a bottom lifting unit is also provided below the base 5 to achieve up and down movement along the surrounding die 4, thereby achieving the effect of stably ejecting the product process part 24.

[0043] Specifically, the lower mold unit is provided with a lower pad 1, a lower mold base 2, a hollow pad plate 3 and a die 4 in sequence along the direction close to the upper mold unit. A space for accommodating a support 5 is formed between the hollow pad plate 3 and the die 4. An arc-shaped structure forming cavity is formed by the punch 19, the die 4 and the support 5. A die frame 12 is also provided corresponding to the stripping frame 23 in the lower mold assembly. The die frame 12 is located on the outside of the die 4, and the bottom is connected to the hollow pad plate 3. The inner walls of the die frame 12 and the stripping frame 23 are on the same vertical line, which is beneficial to the alignment of the forces after mold closing.

[0044] As mentioned above, the bottom lifting unit is arranged on the side of the lower die base 2 away from the upper die unit, and the top extends the push rod 7 to contact the bottom support 5. The bottom lifting unit is preferably arranged to include a top plate 6, a push rod 7, an inner guide column 9 and an inner guide sleeve 10. The top plate 6 is horizontally installed below the lower die base 2 through a column installed below the lower die base 2 in the middle. The push rod 7 is vertically connected to the top plate 6, and the top passes through the corresponding through hole in the lower die base 2. The push rod 7 is pushed upward to the bottom support 5 by the action of the bottom driving member along with the top plate 6, thereby ejecting the product process part 24.

[0045] Taking into account the balance and stability of the force applied by the bottom lifting unit to the product process part 24 when it is ejected, an inner guide column 9 and an inner guide sleeve 10 are also provided in the bottom lifting unit. The inner guide column 9 is installed on the lower mold base 2 through the inner guide sleeve 10 and the pressure plate 8. The protruding end of the top of the inner guide column 9 is placed in the support base 5, and the bottom passes through the corresponding through hole of the top plate 6, thereby limiting the longitudinal position of the top plate 6 moving up and down; in addition, the bottom lifting unit is coaxially arranged with the support base 5 and the punch 19.

[0046] On this basis, it is preferred to arrange a pair of inner guide pillars 9 symmetrically with the midpoint of the support base 5 as the symmetry point. In addition, three top rods 7 are arranged at equal intervals around each inner guide pillar 9. The three top rods 7 form an equilateral triangle structure for supporting the bottom of the support base 5, so as to obtain a good lifting effect.

[0047] In this embodiment, the following process steps are included:

[0048] Step S1: 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 24 is placed on the die 4 and the bottom 5, and positioned by the positioning plate 11;

[0049] Step S2: The upper die moves vertically downward under the action of the power device, the guide pillar and the guide sleeve 13 position and guide the upper die and the lower die, the stripper plate 22 presses the product process part 24 under the action of the nitrogen spring 20, and continues to move downward, the bottom support 5 retreats downward under the action of the punch 19, and the product process part 24 is formed in the cavity formed by the die 4, the bottom support 5 and the punch 19;

[0050] Step S3: the upper die continues to move downward until the upper and lower limit positions 14 are in contact and the upper die reaches the lower dead point, at which time the product molding is completed;

[0051] Step S4: After the product is formed, the upper mold moves upward under the action of the power device to separate the upper mold from the lower mold. During the process, under the action of the nitrogen spring 20, the stripper plate 22 separates the product process part 24 from the punch 19 first. After the upper mold is reset, the lower mold support 5 bounces upward and resets under the action of the top plate 6 and the ejector 7, and the product process part 24 is ejected at the same time. At this time, all the movable parts of the mold return to the initial position, and after the product process part 24 is taken out, the next stamping process can be carried out.

[0052] 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 thick plate arc one-step forming die, characterized in that: It includes an upper mold unit and a lower mold unit arranged below the upper mold unit; A punch (19) is installed on one side of the upper die unit close to the lower die unit, a stripper plate (22) is sleeved around the punch (19), and a nitrogen spring (20) arranged in the upper die unit is abutted against the top of the stripper plate (22); A support (5) for placing a product process part (24) is arranged just below the corresponding male die (19) in the lower die unit. The support (5) moves up and down along the female die (4) arranged around it under the action of the bottom lifting unit. A positioning plate (11) is arranged on the top of the female die (4) along the four sides of the support (5). An arc-shaped structure forming cavity is formed by the male die (19), the female die (4) and the supporting bottom (5).

2. The thick plate arc one-step forming die according to claim 1, characterized in that: The upper die unit is provided with an upper cushion block (17), an upper die seat (18), a back plate (21) and a stripper plate (22) in sequence along a direction close to the lower die unit, and the back plate (21) and the stripper plate (22) are guided to move up and down by an inner guide column (16) and an inner guide sleeve (15) passing through the upper die seat (18); A space for accommodating the punch (19) is formed between the upper die seat (18), the back plate (21) and the stripper plate (22), and the top of the punch (19) is connected to the upper cushion block (17) and the upper die seat (18) by bolts.

3. The thick plate arc one-step forming die according to claim 2, characterized in that: A stripping frame (23) is also installed on the outer side of the back plate (21) away from the upper die seat (18), and a space for accommodating the stripping plate (22) is formed in the stripping frame (23); The stripping plate (22) is provided with rounded corners on its periphery.

4. The thick plate arc one-step forming die according to claim 3, characterized in that: The lower die unit is provided with a lower cushion block (1), a lower die seat (2), a hollow cushion plate (3) and a concave die (4) in sequence along a direction close to the upper die unit, and a space for accommodating a support bottom (5) is formed between the hollow cushion plate (3) and the concave die (4); The bottom lifting unit is arranged on a side of the lower die base (2) away from the upper die unit, and a top rod (7) extends out from the top to contact the supporting bottom (5).

5. The thick plate arc one-step forming die according to claim 4, characterized in that: The bottom lifting unit comprises: A top plate (6), the top plate (6) being horizontally mounted below the lower die base (2) via a column mounted in the middle below the lower die base (2); A push rod (7), the push rod (7) being vertically connected to the top plate (6), the top of the push rod (7) passing through a corresponding through hole in the lower die base (2); An inner guide pin (9) and an inner guide sleeve (10), wherein the inner guide pin (9) is mounted on the lower die base (2) via the inner guide sleeve (10) and the pressure plate (8), the protruding end of the top of the inner guide pin (9) is placed in the support base (5), and the bottom passes through the corresponding through hole of the top plate (6).

6. The thick plate arc one-step forming die according to claim 5, characterized in that: A pair of inner guide pillars (9) are symmetrically arranged on the left and right, and three push rods (7) are arranged at equal intervals around each inner guide pillar (9) to form an equilateral triangle structure supported below the support base (5).

7. The thick plate arc one-step forming die according to claim 1, characterized in that: A die frame (12) is also provided in the lower die unit corresponding to the stripping frame (23); the die frame (12) is located outside the die (4) and has its bottom connected to the hollow pad (3); The inner walls of the die frame (12) and the stripping frame (23) are located on the same vertical line.

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