C-shaped opening trimming die with reinforcing ribs

Abstract

The utility model discloses a C-shaped opening trimming die with a reinforcing rib, which comprises a press, a lower die, a trimming punch and an upper die capable of being matched with the lower die, the trimming punch and the upper die are respectively connected with the press to do lifting motion, and the surface of the lower die is provided with a curved surface consistent with the surface of a workpiece in profiling; the lower die is provided with a C-shaped opening, the two ends of the C-shaped opening extend towards the two sides respectively to form reinforcing ribs, the C-shaped opening is matched with a trimming punch, and trimming of a workpiece is achieved in the process that the trimming punch descends. According to the C-shaped opening trimming die with the reinforcing ribs, the reinforcing ribs are arranged to reinforce the structure of the C-shaped opening, the problem that the C-shaped opening is prone to breakage is obviously solved, and the service life of the lower die is obviously prolonged.

Description

A C-shaped cutting edge mold with reinforcing ribs Technical Field

[0001] This utility model relates to the field of molds, specifically to a C-shaped cutting edge mold with reinforcing ribs. Background Technology

[0002] Some components of the vehicle chassis require C-shaped openings for assembly. To meet assembly requirements, these components need to be trimmed with C-shaped openings during the production process.

[0003] In actual production, a press is often used to perform edge trimming operations. The upper die is set as a trimming punch, and the lower die is set as a C-shaped die. The support surface of the C-shaped die is set as a curved surface that conforms to the shape of the workpiece surface to support the workpiece. However, the lower die needs to cooperate with the trimming punch, so a C-shaped opening structure is set at the cooperation position.

[0004] Although the trimming punch 3 moves in a vertical direction, the lateral flow of material, the geometry of the cutting edge, and the gap between the trimming punch 3 and the lower die 2 all contribute to a horizontal lateral thrust on the lower die, especially the front end of the C-shaped opening 21, during the trimming process. Under the action of this lateral thrust, the front end of the C-shaped opening structure is prone to breakage, affecting the service life of the lower die. Summary of the Invention

[0005] The purpose of this invention is to provide a C-shaped opening trimming mold with reinforcing ribs. This C-shaped opening trimming mold with reinforcing ribs strengthens the C-shaped opening structure, significantly improving the problem of easy breakage of the C-shaped opening and greatly increasing the service life of the lower mold.

[0006] To achieve the above objectives, this utility model provides a C-shaped cutting edge mold with reinforcing ribs, including a press, a lower mold, a cutting edge punch, and an upper mold that can cooperate with the lower mold. The cutting edge punch and the upper mold are respectively connected to the press and move up and down. The surface of the lower mold is provided with a curved surface that conforms to the shape of the workpiece surface.

[0007] The lower die is provided with a C-shaped opening, and the two ends of the C-shaped opening extend to both sides to form reinforcing ribs. The C-shaped opening cooperates with the cutting punch to cut the workpiece during the process of the cutting punch descending.

[0008] Preferably, the position where the reinforcing rib connects to the C-shaped opening is chamfered.

[0009] Preferably, a receiving cavity is provided between the reinforcing rib and the C-shaped opening, and the upper mold is fitted into the receiving cavity.

[0010] Preferably, the upper mold and the press are connected by a compressible elastic element.

[0011] Preferably, during the descent of the press, the lower end face of the upper die contacts the workpiece first.

[0012] Preferably, the press is provided with a first limiting structure, and the upper die is provided with a second limiting mechanism that cooperates with the first limiting structure.

[0013] Preferably, the cutting punch is detachably connected to the press.

[0014] Preferably, the upper die is provided with a lifting channel, and the cutting punch moves up and down along the lifting channel.

[0015] Preferably, the lower mold is provided with a waste channel.

[0016] According to the above technical solution, the workpiece of this utility model is placed on the lower die, and the surface of the lower die is provided with a curved surface with the same curvature as the workpiece surface, which can reliably support the workpiece. During the press's lifting and lowering motion, the upper die first contacts the workpiece and cooperates with the lower die to reliably limit the workpiece's position, preventing the workpiece from changing position during the stamping process and affecting the quality of the cut.

[0017] After the upper die clamps the workpiece, the cutting punch descends to cut the workpiece. When the cutting punch descends to the correct position, the C-shaped cutting operation of the workpiece is achieved.

[0018] Although the trimming punch moves vertically, the lateral flow of material, the geometry of the cutting edge, and the gap between the trimming punch and the lower die all contribute to a horizontal lateral thrust on the lower die, especially the tip of the C-shaped opening, during the trimming process. Under the action of this lateral thrust, the tip of the C-shaped opening is prone to breakage.

[0019] The two ends of the C-shaped opening extend to both sides to form reinforcing ribs. By setting the reinforcing ribs, the influence of the lateral thrust on the end of the C-shaped opening during the cutting process can be effectively overcome, avoiding the problem that the end of the C-shaped opening is prone to breakage, and effectively improving the service life of the C-shaped opening.

[0020] By adding reinforcing ribs, the service life of the lower mold can be effectively improved. Previously, after about 3 months of use, cracks would appear at the end of the C-shaped opening of the lower mold, or even breakage would occur. By adding these reinforcing ribs, the service life of the lower mold can be increased to 1 year or even 1.5 years.

[0021] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 is a perspective view of a C-shaped cutting edge mold with reinforcing ribs;

[0024] Figure 2 is a schematic diagram of the structure of a press;

[0025] Figure 3 is a schematic diagram of the upper mold structure;

[0026] Figure 4 is the front view of Figure 3;

[0027] Figure 5 is a positional diagram of a press, upper die, and trimming punch.

[0028] Figure 6 is a three-dimensional view of Figure 4;

[0029] Figure 7 is a three-dimensional view of the lower mold;

[0030] Figure 8 is a top view of Figure 7.

[0031] Explanation of reference numerals in the attached figures

[0032] 1. Press 2. Lower die

[0033] 3. Trimming punch; 4. Upper die

[0034] 21 C-shaped opening 22 Reinforcing rib

[0035] 23 Receiving cavity 5 Compressible elastic element

[0036] 61 First limiting structure 62 Second limiting mechanism

[0037] 41 Lifting Channel 7 Waste Channel

[0038] 31 First connecting surface 51 Second connecting surface Detailed Implementation

[0039] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0040] In this utility model, unless otherwise stated, directional words such as "one end," "the other end," "outer surface," "axis," "conical," and "near" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0041] The C-shaped cutting edge mold with reinforcing ribs shown in Figure 1 includes a press 1, a lower mold 2, a cutting edge punch 3, and an upper mold 4 that can cooperate with the lower mold 2. The cutting edge punch 3 and the upper mold 4 are respectively connected to the press 1 and move up and down. The surface of the lower mold 2 is provided with a curved surface that conforms to the shape of the workpiece surface.

[0042] The lower die 2 is provided with a C-shaped opening 21. The two ends of the C-shaped opening 21 extend to both sides to form reinforcing ribs 22. The C-shaped opening 21 cooperates with the cutting punch 3 to cut the workpiece during the process of the cutting punch 3 descending.

[0043] Through the implementation of the above technical solution, the workpiece is placed on the lower die 2. The surface of the lower die 2 is provided with a curved surface that matches the curvature of the workpiece surface, which can reliably support the workpiece. The press 1 moves up and down. During the pressing process of the press 1, the upper die 4 first contacts the workpiece and cooperates with the lower die 2 to reliably limit the workpiece, so as to avoid the workpiece from changing position during the stamping process and affecting the quality of the punching cut.

[0044] After the upper die 4 clamps the workpiece, the cutting punch 3 descends to cut the workpiece. When the cutting punch 3 descends to the position, the cutting operation of the C-shaped opening of the workpiece is realized.

[0045] Although the trimming punch 3 moves in a vertical direction, the lateral flow of material, the geometry of the cutting edge, and the gap between the trimming punch 3 and the lower die 2 all contribute to a horizontal lateral thrust on the lower die, especially the front end of the C-shaped opening 21, during the trimming process. Under the action of this lateral thrust, the front end of the C-shaped opening 21 is prone to breakage.

[0046] The two ends of the C-shaped opening 21 extend to both sides to form reinforcing ribs 22. By setting the reinforcing ribs 22, the influence of the lateral thrust on the end of the C-shaped opening 21 during the cutting process can be effectively overcome, avoiding the problem that the end of the C-shaped opening 21 is prone to breakage, and effectively improving the service life of the C-shaped opening 21.

[0047] By setting the reinforcing rib 22, the service life of the lower mold 2 can be effectively improved. Previously, after about 3 months of use, cracks would appear at the end of the C-shaped opening 21 of the lower mold 2, or even breakage would occur. By setting the reinforcing rib 22, the service life of the lower mold 2 can be increased to 1 year or even 1.5 years.

[0048] In this embodiment, preferably, the position where the reinforcing rib 22 connects to the C-shaped opening 21 is chamfered.

[0049] Since the connection between the reinforcing rib 22 and the C-shaped opening 21 is located at a corner, setting a chamfer at the connection between the reinforcing rib 22 and the C-shaped opening 21 can effectively avoid stress concentration at this location and prevent the lower mold 2 from breaking at this connection location during use.

[0050] In this embodiment, preferably, a receiving cavity 23 is provided between the reinforcing rib 22 and the C-shaped opening 21, and the upper mold 4 cooperates with the receiving cavity 23.

[0051] To effectively limit the workpiece, the working surface of the upper die 4 is set as a curved surface that conforms to the contour of the workpiece surface. When the upper die 4 presses the workpiece downwards, in order to ensure that the workpiece does not wobble during the subsequent stamping process, the upper die 4 needs to not only press the upper surface of the workpiece, but also fix the workpiece circumferentially. The working surfaces of the upper die 4 and the lower die 2 need to be fully engaged. Therefore, a receiving cavity 23 is provided between the reinforcing rib 22 and the C-shaped opening 21. When the upper die 4 moves into position, a part of the upper die 4 will engage with the receiving cavity 23.

[0052] In this embodiment, preferably, the upper mold 4 is connected to the press 1 via a compressible elastic element 5.

[0053] During the descent of press 1, upper die 4 first contacts the workpiece and applies pressure. The cooperation between upper die 4 and lower die 2 ensures the workpiece remains stable. Subsequently, as press 1 continues to descend, trimming punch 3 contacts the workpiece and trims its edges. Thus, the working strokes of trimming punch 3 and upper die 4 are different. After upper die 4 contacts the workpiece, press 1 continues to descend, and trimming punch 3 descends with press 1, but upper die 4 remains stationary. During the descent of press 1, compressible elastic element 5 is compressed. Therefore, this method achieves the goal of connecting trimming punch 3 and upper die 4 to the same press 1 but having different strokes.

[0054] The press 1 is provided with a second connecting surface 51, through which the compressible elastic element 5 is connected to the press 1.

[0055] In this embodiment, preferably, during the descent of the press 1, the lower end face of the upper die 4 contacts the workpiece first.

[0056] Before the cutting punch 3 contacts the workpiece, the upper die 4 needs to contact the workpiece first in order to reliably limit the workpiece and prevent the workpiece from shaking when the cutting punch 3 operates on the workpiece.

[0057] Since the upper die 4 is connected to the press 1 through the compressible elastic element 5, when the upper die 4 is not in contact with the workpiece, the compressible elastic element 5 is in a long state. Therefore, under the action of the compressible elastic element 5, the lower end face of the upper die 4 is lower than the cutting punch 3, and can contact the workpiece first.

[0058] In this embodiment, preferably, the press 1 is provided with a first limiting structure 61, and the upper mold 4 is provided with a second limiting mechanism 62 that cooperates with the first limiting structure 61.

[0059] Through the combined action of the first limiting structure 61 and the second limiting mechanism 62, the upper mold 4 can be reliably connected to the press 1 before contacting the workpiece.

[0060] As shown in Figures 3-4, the relative position of the upper mold 4 and the press 1 can be kept fixed by the action of the first limiting mechanism on both sides. Preferably, the compressible elastic element 5 is a nitrogen spring. When the nitrogen spring is set to a compressed state, the upper mold 4 located at the lower end of the nitrogen spring receives the pressure of the nitrogen spring, so that the first limiting structure 61 and the second limiting mechanism 62 are tightly engaged.

[0061] The press 1 has a square groove inside, which fits with the outer surface of the upper mold 4, so that the upper mold 4 can move along the square groove inside the press 1 during the compression of the nitrogen spring, and the position of the upper mold 4 can remain stable during the descent of the press 1.

[0062] Therefore, under the action of the nitrogen spring, the upper mold 4 can reliably cooperate with the press 1. Moreover, as the nitrogen spring is gradually compressed, the pressure of the nitrogen spring on the upper mold 4 does not change, which can reliably ensure the stability of the upper mold 4 during operation.

[0063] In this embodiment, preferably, the cutting punch 3 is detachably connected to the press 1.

[0064] The cutting punch 3 is connected to the press 1 and can descend with the press 1, and continue to descend after contacting the workpiece to achieve C-shaped cutting of the workpiece.

[0065] The press 1 is provided with a first connecting surface 31, and the cutting punch 3 is connected to the press 1 through the first connecting surface 31. With this connection method, the cutting punch 3 can rise or fall with the press 1.

[0066] The cutting punch 3 is equipped with a C-shaped cutting edge cutter. Repeated use will cause problems such as cutter wear and need to be replaced. The cutting punch 3 is detachably connected to the press 1, which facilitates the replacement of the cutting punch 3.

[0067] In this embodiment, preferably, the upper mold 4 is provided with a lifting channel 41, and the cutting punch 3 moves up and down along the lifting channel 41.

[0068] After the upper die 4 contacts the workpiece, the upper die 4 and the cutting punch 3 will move relative to each other. By setting up the lifting channel 41, the cutting punch 3 can move relative to the upper die 4 through the lifting channel 41 during its descent.

[0069] In this embodiment, preferably, the lower mold 2 is provided with a waste channel 7.

[0070] The scrap material cut off by the cutting punch 3 will fall directly into the scrap channel 7 below and eventually be discharged through the scrap channel 7. By setting up the scrap channel 7, the C-shaped cutting die with reinforcing ribs can achieve continuous production without having to repeatedly clean up the scrap material during the production process.

[0071] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0073] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A C-shaped cutting edge mold with reinforcing ribs, characterized in that, It includes a press (1), a lower die (2), a trimming punch (3), and an upper die (4) that can cooperate with the lower die (2). The trimming punch (3) and the upper die (4) are connected to the press (1) and move up and down. The surface of the lower die (2) is provided with a curved surface that conforms to the shape of the workpiece surface. The lower die (2) is provided with a C-shaped opening (21). The two ends of the C-shaped opening (21) extend to both sides to form reinforcing ribs (22). The C-shaped opening (21) cooperates with the trimming punch (3) to trim the workpiece during the process of the trimming punch (3) descending.

2. The C-shaped cutting die with reinforcing ribs according to claim 1, characterized in that, The position where the reinforcing rib (22) connects to the C-shaped opening (21) is chamfered.

3. The C-shaped cutting die with reinforcing ribs according to claim 2, characterized in that, A receiving cavity (23) is provided between the reinforcing rib (22) and the C-shaped opening (21), and the upper mold (4) is fitted with the receiving cavity (23).

4. The C-shaped cutting die with reinforcing ribs according to claim 1, characterized in that, The upper mold (4) is connected to the press (1) through a compressible elastic element (5).

5. The C-shaped cutting die with reinforcing ribs according to claim 4, characterized in that, During the descent of the press (1), the lower end face of the upper die (4) contacts the workpiece first.

6. The C-shaped cutting die with reinforcing ribs according to claim 4, characterized in that, The press (1) is provided with a first limiting structure (61), and the upper mold (4) is provided with a second limiting mechanism (62) that cooperates with the first limiting structure (61).

7. The C-shaped cutting die with reinforcing ribs according to claim 3, characterized in that, The cutting punch (3) is detachably connected to the press (1).

8. The C-shaped cutting die with reinforcing ribs according to claim 3, characterized in that, The upper mold (4) is provided with a lifting channel (41), and the cutting punch (3) moves up and down along the lifting channel (41).

9. The C-shaped cutting die with reinforcing ribs according to claim 1, characterized in that, The lower mold (2) is equipped with a waste channel (7).

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