Bent angle blank stamping and retreating mechanism and stamping device

Abstract

The utility model provides a bending angle blank stamping and retreating mechanism and a stamping device. The bending angle blank stamping and retreating mechanism comprises an upper die base, a lower die base and a stamping assembly. The upper die base is arranged on the lower die base. The stamping assembly comprises a first supporting piece, a second supporting piece and two horizontal stamping pieces. The first supporting piece is fixedly arranged on the lower die base, the second supporting piece is arranged on the lower die base in a sliding mode in the width direction of the lower die base, and the two horizontal stamping pieces are arranged on the lower die base in a sliding mode in the length direction of the lower die base. When the upper die base and the lower die base are closed, the second supporting pieces are arranged opposite to the two horizontal stamping pieces respectively. The second supporting piece supports the to-be-machined product when the horizontal stamping pieces bend the corners, after the two horizontal stamping pieces bend the corners located on the folding lugs from the two sides of the to-be-machined product, the second supporting piece serving as a corner supporting structure is pulled away from the position between the two folding lugs, the to-be-machined product can move in the direction away from the lower die base, and die withdrawing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, specifically to a bending corner stamping retraction mechanism and stamping device. Background Technology

[0002] Stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube and profile, causing plastic deformation or separation, thereby obtaining a workpiece of the required shape and size.

[0003] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the skeleton structure of the unbent horn-shaped creature. Figure 2 This is a schematic diagram of the skeleton body structure after the corner is bent. The skeleton body 200 is used to form a windshield wiper. The windshield wiper includes the skeleton body 200. One end of the skeleton body 200 is provided with two symmetrical folding ears 201. The side of the folding ear 201 facing away from the skeleton body 200 is provided with a corner 202. The corner 202 on each folding ear 201 is bent toward the other folding ear 201.

[0004] When the above-mentioned wiper is formed using a stamping die, the upper and lower dies first stamp the frame body 200, forming folded ears 201 and corner pieces 202 parallel to the folded ears on both sides of the frame body 200. Then, the corner pieces 202 are bent by side stamping in conjunction with the lower die. However, after the corner pieces 202 are bent, the frame body 200 is located above the lower die support structure, the two folded ears 201 are located on both sides of the lower die support structure, and the bent corner pieces 202 are located below the lower die support structure. That is, the frame body 200 is covered by the support structure of the lower die, which causes the frame body stamped to this station to be unable to be smoothly demolded and enter the next station.

[0005] Therefore, in the existing technology, when stamping the folded ears and bent corner structures in windshield wipers, there is a problem that the wipers cannot be easily demolded. Utility Model Content

[0006] To address the shortcomings of existing technologies, this application provides a bending corner stamping retraction mechanism and stamping device.

[0007] The present application discloses a bending corner stamping retraction mechanism, comprising: an upper die base, a lower die base, and a stamping assembly; the upper die base is disposed on the lower die base, and the stamping assembly includes a first support member, a second support member, and two horizontal stamping members; the first support member is fixedly disposed on the lower die base, the second support member is slidably disposed on the lower die base along the width direction of the lower die base, and the two horizontal stamping members are slidably disposed on the lower die base along the length direction of the lower die base; when the upper die base and the lower die base are closed, the second support member is respectively disposed opposite to the two horizontal stamping members.

[0008] Preferably, the stamping assembly further includes an upper pressing member, which is fixed on the upper die base; when the upper die base and the lower die base are closed, the upper pressing member is opposite to the second support member.

[0009] Preferably, the second support member includes an advancing inclined block, a lower pad block, a first upper inclined block, and a first retraction cylinder. The advancing inclined block is slidably disposed on the lower mold base, and its end facing away from the lower mold base has an advancing inclined surface. The lower pad block is disposed on the advancing inclined block. The first upper inclined block is disposed on the upper mold base, and its end facing away from the upper mold base has a first upper inclined surface. The advancing inclined surface and the first upper inclined surface are arranged opposite to each other. One end of the first retraction cylinder is connected to the advancing inclined block, and the other end is connected to the lower mold base. When the upper mold base and the lower mold base are closed, the lower pad block is opposite to the two horizontal stamping parts respectively.

[0010] Preferably, the horizontal stamping part includes a stamping inclined block, a punch, a second upper inclined block, and a second retraction cylinder. The stamping inclined block is slidably disposed on the lower die base, and one end of it facing away from the lower die base has a stamping inclined surface. The punch is disposed on the stamping inclined block. The second upper inclined block is disposed on the upper die base, and one end of it facing away from the upper die base has a second upper inclined surface, which is opposite to the stamping inclined surface. One end of the second retraction cylinder is connected to the stamping inclined block, and the other end is connected to the lower die base. The stamping inclined blocks of the two horizontal stamping parts are respectively located on both sides of the lower pad block.

[0011] Preferably, the lower pad has two stamping grooves, which are located on both sides of the lower pad; when the upper mold base and the lower mold base are closed, the punch extends into the stamping groove.

[0012] Preferably, the first support member includes a first support block and a second support block. The first support block, the second support block and the lower pad are sequentially spaced on the lower mold base along the width direction of the lower mold base. The first support block and the second support block are respectively fixedly connected to the lower mold base.

[0013] Preferably, the lower pad block is provided with a positioning protrusion, and the second support block of the second support block is provided with a positioning groove; when the upper mold base and the lower mold base are closed, the positioning protrusion extends into the positioning groove.

[0014] According to another aspect of this utility model, this application also discloses a stamping device, which includes a bending corner stamping retraction mechanism.

[0015] The beneficial effects of this application are as follows: by setting a first support member and a second support member to support the product to be processed respectively, the second support member supports the product to be processed when the horizontal stamping parts are bent at the corners. After the two horizontal stamping parts bend the corners located on the folded ears from both sides of the product to be processed, the second support member, which serves as the corner support structure, is pulled out from between the two folded ears, and the product to be processed can move in the direction away from the lower die base to achieve demolding. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the skeleton structure of the unbent corner piece in the background art;

[0018] Figure 2 This is a schematic diagram of the skeleton body structure after the corner is bent in the background art;

[0019] Figure 3 This is a schematic diagram of the stamping device structure in the embodiment;

[0020] Figure 4 This is one of the exploded views of the stamping assembly in the embodiment;

[0021] Figure 5 This is a schematic diagram of the stamping assembly in the mold-closed state in the embodiment;

[0022] Figure 6 This is a schematic diagram of the stamping assembly in the mold-open state in the embodiment;

[0023] Figure 7 This is a schematic diagram showing the cooperation relationship between the upper pressure member and the second support member in the embodiment;

[0024] Figure 8 This is the second exploded view of the stamping assembly in the embodiment;

[0025] Figure 9 This is a schematic diagram of the lower pad structure in the embodiment;

[0026] Figure 10 This is a schematic diagram of the second support block structure in the embodiment.

[0027] Figure label:

[0028] 10-Stamping device; 200-Frame body; 201-Folding lug; 202-Corner;

[0029] 1-Upper die holder; 2-Lower die holder; 3-Stamping assembly;

[0030] 31-First support component; 32-Second support component; 33-Horizontal stamping component; 34-Upper pressing component;

[0031] 311 - First support block; 312 - Second support block;

[0032] 321-Carry-in inclined block; 322-Lower pad block; 323-First upper inclined block; 324-First retraction cylinder;

[0033] 331 - Stamping inclined block; 332 - Punch; 333 - Second upper inclined block; 334 - Second retraction cylinder;

[0034] 3121 - Positioning groove;

[0035] 3211 - Carry-over ramp;

[0036] 3221 - Stamping groove; 3222 - Positioning protrusion;

[0037] 3231 - First upper inclined plane;

[0038] 3311 - Stamping inclined surface;

[0039] 3331 - Second upper slope. Detailed Implementation

[0040] The following drawings disclose several embodiments of this application. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this application. That is, in some embodiments of this application, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0041] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0042] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0043] To further understand the content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0044] Please see Figure 3 , Figure 3The diagram shows the structure of the stamping device. In this example, the bending corner stamping and retraction mechanism includes an upper die base 1, a lower die base 2, and a stamping assembly 3. The upper die base 1 and the lower die base 2 are arranged vertically opposite each other, and the upper die base 1 can move vertically relative to the lower die base 2. The x-direction is the length direction of the lower die base, and the y-direction is the width direction of the lower die base. The strip passes between the upper die base 1 and the lower die base 2. The upper die base 1 and the lower die base 2 respectively support the stamping assembly 3. The stamping assembly 3 is used to stamp the corner of the product to be processed on the strip.

[0045] Please refer to 4. Figure 4 This is one of the exploded views of a stamping assembly 3, which includes a first support member 31, a second support member 32, and two horizontal stamping members 33. The first support member 31 is fixed on the lower die base 2, the second support member 32 is slidably disposed on the lower die base 2 along the width direction, and the two horizontal stamping members 33 are slidably disposed on the lower die base 2 along the length direction. When the upper die base 1 and the lower die base 2 are closed, the second support member 32 is respectively positioned opposite to the two horizontal stamping members 33.

[0046] Please refer to the following: Figure 4 , Figure 5 and Figure 6 , Figure 4 One of the exploded views of a stamping assembly. Figure 5 This is a schematic diagram of the stamping assembly in the mold-closed state. Figure 6 This is a schematic diagram of the stamping assembly in the open mold state. Specifically, the material strip moves along the lower mold base 2 via a conveying mechanism and is positioned between the upper mold base 1 and the lower mold base 2. The first support member 31 and the second support member 32 are spaced apart on the lower mold base 2 along the length direction of the product to be processed. When the upper mold base 1 and the lower mold base 2 are closed, the corner of the product to be processed is located at the second support member 32. When the upper mold base 1 and the lower mold base 2 are open, the product to be processed is supported by the first support member 31. In other words, after the product to be processed on the material strip enters the stamping assembly 3, the first support member 31 carries the product to be processed. When the upper mold base 1 and the lower mold base 2 are closed, that is, when the corner of the product to be processed is stamped, the first support member 31 and the second support member 32 jointly carry the product to be processed, and the corner of the product to be processed is located on the second support member 32. The two horizontal stamping members 33 stamp the corner of the product to be processed from both sides of the second support member 32.

[0047] In practical applications, the corner bending and stamping retraction mechanism stamps and bends the corners of the product to be processed on the strip. The strip moves along the length of the lower die 2 between the upper die 1 and the lower die 2. After the product to be processed moves to the station of the stamping assembly 3, it is supported by the first support member 31. The first support member 31 can independently support the product to be processed. Then, the upper die 1 moves toward the lower die 2. During the process of the upper die 1 moving toward the lower die 2, that is, during the mold closing process, the second support member 32 moves toward the relatively horizontal stamping part 3. As the position of component 3 moves, the two horizontal stamping parts 33 move toward the product to be processed and gradually bend the corners of the product. After the mold is closed, the second support component 32 is located between the two folds of the product to be processed. The corners are bent by the stamping of the two horizontal stamping parts 33. Then, the upper mold base 1 moves away from the lower mold base 2, which is the mold opening process. The two horizontal stamping parts 33 are reset, the second support component 32 is reset, and the second support component 32 moves along the width direction of the lower mold and is pulled away from between the two folds. The product to be processed can then be demolded from the stamping assembly 3.

[0048] Thus, by setting the first support member 31 and the second support member 32 to support the product to be processed, the second support member 32 supports the product to be processed when the horizontal stamping member 33 bends the corners on the ears from both sides of the product to be processed. After the two horizontal stamping members 33 bend the corners on the ears from both sides of the product to be processed, the second support member 32, which serves as the corner support structure, is pulled away from the two ears, and the product to be processed can move in the direction away from the lower die base 2 to achieve demolding.

[0049] Please refer to the following: Figure 7 , Figure 7 The diagram shows the relationship between the upper pressing member and the second support member. Furthermore, the stamping assembly 3 also includes an upper pressing member 34, which is fixed on the upper die base 1. When the upper die base 1 and the lower die base 2 are closed, the upper pressing member 34 is opposite to the second support member 32.

[0050] Specifically, when the upper mold base 1 and the lower mold base 2 are closed, the upper pressing member 34, the first support member 31, and the second support member 32 work together to support and fix the product to be processed. The corner of the product to be processed is located between the upper pressing member 34 and the second support member 32. The upper pressing member 34 and the second support member 32 fix the product to be processed from the upper and lower sides to ensure the stamping quality of the product to be processed.

[0051] Please see Figure 8 and review Figures 4-7 , Figure 8The second exploded view of the stamping assembly further shows that the second support member 32 includes an advancing inclined block 321, a lower pad block 322, a first upper inclined block 323, and a first retraction cylinder 324. The advancing inclined block 321 is slidably disposed on the lower die base 2, and its end facing away from the lower die base 2 has an advancing inclined surface 3211. The lower pad block 322 is disposed on the advancing inclined block 321. The first upper inclined block 323 is disposed on the upper die base 1, and its end facing away from the upper die base 1 has a first upper inclined surface 3231. The advancing inclined surface 3211 and the first upper inclined surface 3231 are arranged opposite to each other. One end of the first retraction cylinder 324 is connected to the advancing inclined block 321, and the other end is connected to the lower die base 2. When the upper die base 1 and the lower die base 2 are closed, the lower pad block 322 is opposite to the two horizontal stamping parts 33 respectively.

[0052] Specifically, during the movement of the upper mold base 1 toward the lower mold base 2, the first upper inclined surface 3231 of the first upper inclined block 323 presses against the advancing inclined surface 3211 of the advancing inclined block 321. The first upper inclined surface 3231 and the advancing inclined surface 3211 cooperate to make the advancing inclined block 321 move toward the first support member 31 of the advancing inclined block 321. The advancing inclined block 321 drives the lower pad block 322 to move. After the upper mold base 1 and the lower mold base 2 are closed, the lower pad block 322 is located at two horizontal positions. Between the stamped parts 33 and opposite to the two horizontal stamped parts 33, the lower pad 322 is located between the two folded ears of the product to be processed. The lower pad 322 and the first support 31 jointly support the product to be processed. When the upper mold base 1 moves away from the lower mold base 2, that is, during the mold opening process, the first retraction cylinder 324 drives the advance inclined block 321 to reset. The advance inclined block 321 drives the lower pad 322 to move, and the lower pad 322 is pulled out from between the two folded ears of the product to be processed.

[0053] Furthermore, the horizontal stamping part 33 includes a stamping inclined block 331, a punch 332, a second upper inclined block 333, and a second retraction cylinder 334. The stamping inclined block 331 is slidably disposed on the lower die base 2, and has a stamping inclined surface 3311 at one end facing away from the lower die base 2. The punch 332 is disposed on the stamping inclined block 331. The second upper inclined block 333 is disposed on the upper die base 1, and has a second upper inclined surface 3331 at one end facing away from the upper die base 1. The second upper inclined surface 3331 is opposite to the stamping inclined surface 3311. One end of the second retraction cylinder 334 is connected to the stamping inclined block 331, and the other end is connected to the lower die base 2. The stamping inclined blocks 331 of the two horizontal stamping parts 33 are respectively located on both sides of the lower pad block 322.

[0054] Specifically, during the process of the upper mold base 1 moving towards the lower mold base 2, the second upper inclined surface 3331 of the second upper inclined block 333 presses the stamping inclined surface 3311 of the stamping inclined block 331. The second upper inclined block 333 and the stamping inclined block 331 cooperate to make the advancing inclined block 321 move towards the second support member 32 of the stamping inclined block 331. The stamping inclined block 331 drives the punch 332 to move towards the product to be processed located on the lower pad 322. The punches 332 of the two horizontal stamping members 33 stamp diagonally from both sides of the product to be processed, causing the corners to bend. During the process of the upper mold base 1 moving away from the lower mold base 2, that is, during the mold opening process, the second retraction cylinder 334 drives the stamping inclined block 331 to reset, and the stamping inclined block 331 drives the punch 332 to reset.

[0055] Please refer to the following: Figure 9 , Figure 9 The diagram shows the structure of the lower pad block. Further, the lower pad block 322 has two stamping grooves 3221, which are located on both sides of the lower pad block 322. When the upper mold base 1 and the lower mold base 2 are closed, the punch 332 extends into the stamping groove 3221.

[0056] In this way, when the mold is closed, the punch 332 can extend into the stamping groove 3221, avoiding the punch 332 from squeezing the lower pad 322.

[0057] Furthermore, the first support member 31 includes a first support block 311 and a second support block 312. The first support block 311, the second support block 312 and the lower pad block 322 are sequentially spaced on the lower mold base 2 along the width direction of the lower mold base 2. The first support block 311 and the second support block 312 are respectively fixedly connected to the lower mold base 2.

[0058] Specifically, the first support block 311 and the second support block 312 are fixedly mounted on the lower die base 2 at intervals. When the product to be processed enters the station of the stamping assembly 3 and the die is not closed, the first support block 311 and the second support block 312 jointly support the product to be processed. During the die closing and stamping process, the first support block 311, the second support block 312 and the lower pad block 322 jointly support the product to be processed.

[0059] Please see Figure 10 and review Figure 9 , Figure 10 The diagram shows the structure of the second support block. Further, the lower pad block 322 is provided with a positioning protrusion 3222, and the second support block 312 is provided with a positioning groove 3121. When the upper mold base 1 and the lower mold base 2 are closed, the positioning protrusion 3222 extends into the positioning groove 3121.

[0060] In this way, the lower pad 322 will not shift during the stamping process of the horizontal stamping part 33, and the cooperation between the positioning protrusion 3222 and the positioning groove 3121 will reinforce the lower pad 322.

[0061] Example 2

[0062] The stamping device in this example includes the bending corner stamping retraction mechanism in Embodiment 1.

[0063] In summary, by setting a first support member and a second support member to support the product to be processed, the second support member supports the product to be processed when the horizontal stamping parts are bent at the corners. After the two horizontal stamping parts bend the corners located on the folded ears from both sides of the product to be processed, the second support member, which serves as the corner support structure, is pulled out from between the two folded ears, and the product to be processed can move in the direction away from the lower die base to achieve demolding.

[0064] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A bending corner stamping retraction mechanism, characterized in that, include: The upper die base (1), the lower die base (2), and the stamping assembly (3) are provided on the lower die base (2). The stamping assembly (3) includes a first support member (31), a second support member (32), and two horizontal stamping members (33). The first support member (31) is fixed on the lower die base (2). The second support member (32) is slidably disposed on the lower die base (2) along the width direction of the lower die base (2). The two horizontal stamping members (33) are slidably disposed on the lower die base (2) along the length direction of the lower die base (2). When the upper die base (1) and the lower die base (2) are closed, the second support member (32) is respectively disposed opposite to the two horizontal stamping members (33).

2. The bending corner stamping retraction mechanism according to claim 1, characterized in that, The stamping assembly (3) further includes an upper pressing member (34), which is fixed on the upper die base (1); when the upper die base (1) and the lower die base (2) are closed, the upper pressing member (34) is opposite to the second support member (32).

3. The bending corner stamping retraction mechanism according to claim 1, characterized in that, The second support member (32) includes an advancing inclined block (321), a lower pad block (322), a first upper inclined block (323), and a first retraction cylinder (324). The advancing inclined block (321) is slidably disposed on the lower mold base (2), and its end facing away from the lower mold base (2) has an advancing inclined surface (3211). The lower pad block (322) is disposed on the advancing inclined block (321), and the first upper inclined block (323) is disposed on the upper mold base (1). One end of the upper mold base (1) has a first upper inclined surface (3231), the advancing inclined surface (3211) is arranged opposite to the first upper inclined surface (3231), one end of the first retraction cylinder (324) is connected to the advancing inclined block (321), and the other end is connected to the lower mold base (2); when the upper mold base (1) and the lower mold base (2) are closed, the lower pad block (322) is opposite to the two horizontal stamping parts (33) respectively.

4. The bending corner stamping retraction mechanism according to claim 3, characterized in that, The horizontal stamping part (33) includes a stamping inclined block (331), a punch (332), a second upper inclined block (333), and a second retraction cylinder (334). The stamping inclined block (331) is slidably disposed on the lower die base (2), and its end facing away from the lower die base (2) has a stamping inclined surface (3311). The punch (332) is disposed on the stamping inclined block (331), and the second upper inclined block (333) is disposed on the upper die base (2). On the seat (1), one end facing away from the upper mold seat (1) has a second upper inclined surface (3331), the second upper inclined surface (3331) is opposite to the stamping inclined surface (3311), one end of the second retraction cylinder (334) is connected to the stamping inclined block (331), and the other end is connected to the lower mold seat (2). The stamping inclined blocks (331) of the two horizontal stamping parts (33) are respectively located on both sides of the lower pad block (322).

5. The bending corner stamping retraction mechanism according to claim 4, characterized in that, The lower pad (322) has two stamping grooves (3221), which are located on both sides of the lower pad (322). When the upper mold base (1) and the lower mold base (2) are closed, the punch (332) extends into the stamping groove (3221).

6. The bending corner stamping retraction mechanism according to claim 3, characterized in that, The first support member (31) includes a first support block (311) and a second support block (312). The first support block (311), the second support block (312) and the lower pad block (322) are sequentially spaced on the lower mold base (2) along the width direction of the lower mold base (2). The first support block (311) and the second support block (312) are respectively fixedly connected to the lower mold base (2).

7. The bending corner stamping retraction mechanism according to claim 6, characterized in that, The lower pad (322) is provided with a positioning protrusion (3222), and the second support block (312) of the second support block (312) is provided with a positioning groove (3121); when the upper mold base (1) and the lower mold base (2) are closed, the positioning protrusion (3222) extends into the positioning groove (3121).

8. A stamping device, characterized in that, Includes the bending corner stamping retraction mechanism as described in any one of claims 1-7.

Images