A continuous stamping die

Abstract

The present invention discloses a continuous stamping die, which comprises a first template and a second template which are adjacently arranged, wherein a dividing line between the first template and the second template is a broken line or a curve, the first template is provided with at least one first part which is closest to the dividing line, the second template is provided with at least one second part which is closest to the dividing line, the first part has a sufficient strength distance from the edge of the first template, and the second part has a sufficient strength distance from the edge of the second template.

Description

Technical Field

[0001] The invention relates to a die structure, in particular to a continuous stamping die. Background Art

[0002] Stamping dies are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during cold stamping. They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the desired parts.

[0003] A continuous die refers to a cold stamping die in which a press machine uses strip-shaped stamping raw materials to complete multiple stamping processes simultaneously on a die using several different workstations in one stamping stroke. Each time the die completes a stamping operation, the material strip moves a fixed distance until the product is completed.

[0004] When designing a continuous stamping die, the first thing to do is to arrange the stations according to the characteristic parameters of the shape structure, size and material of the stamping parts. When the shape structure of the stamping parts is complex, more stamping stations need to be arranged; when the size of the stamping parts is large, a larger feed step is required; when the stamping processability of the material of the stamping parts is poor, more special stations or auxiliary stations need to be arranged; various factors such as these will lead to an increase in the length of the continuous stamping die. If the stamping die reaches a certain length, it is limited by the processing capacity of the mold manufacturing machine tool, and the stamping die must be processed by the template segmentation design and processing method.

[0005] Template segmentation design and processing is a very common design method for continuous stamping dies. However, in general, stamping die designers will design the die template to be square. When the template segmentation design is required, they often habitually follow this traditional design idea. The dividing line is generally designed as a straight line perpendicular to the upper and lower edges of the template. In order to ensure the strength of the template edge, the two sides of the dividing line must maintain a sufficient distance from the part frame on the template. Therefore, template segmentation is not as simple as drawing a line casually, and it needs to be coordinated and arranged in combination with the mold station layout. Using the conventional template segmentation design idea, when there are many stations arranged in the optimal template length dividing line area, or the stamping parts are connected at a certain angle, etc., the part frame on the template is arranged vertically, horizontally, or diagonally, and it is almost impossible to find a straight line that is both perpendicular to the upper and lower edges of the template and can ensure the strength of the template edge. At this time, one or more empty stations have to be specially added to move the stamping station to make way for a dividing line. This further increases the length of the mold, while also increasing the weight of the mold, increasing the mold cost, and making the mold station layout look a bit awkward.

[0006] In view of this, the present invention proposes a new continuous stamping die. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention aims to provide a continuous stamping die with a simple manufacturing process and low cost.

[0008] The present invention is achieved through the following technical solutions:

[0009] A continuous stamping die, comprising a first template and a second template arranged adjacent to each other, wherein a dividing line between the first template and the second template is a broken line or a curve, the first template is provided with at least one first part closest to the dividing line, the second template is provided with at least one second part closest to the dividing line, the first part has a sufficient strength distance from an edge of the first template, and the second part has a sufficient strength distance from an edge of the second template.

[0010] Furthermore, when the stamping parts are arranged obliquely for connection, the workstation parts of each workstation of the first template and the second template are also placed obliquely accordingly, and the dividing line includes an oblique line, and the oblique line passes through one of the workstations.

[0011] Furthermore, the workstation passed by the oblique line is an empty workstation.

[0012] Furthermore, the oblique extension angle of the oblique line is consistent with the oblique arrangement angle of the stamping parts.

[0013] Furthermore, the dividing line also includes a first vertical line and a second vertical line perpendicular to the upper and lower edges of the first template and the second template, the first vertical line is connected to one end of the oblique line, and the second vertical line is connected to the other end of the oblique line.

[0014] Furthermore, the first part on the first template has a sufficient strength distance from the edge of the first template; the second part on the second template has a sufficient strength distance from the edge of the second template.

[0015] Furthermore, when the stamping parts are arranged in a large pitch in the straight direction, the first template and the second template have a first gap and a second gap in the distribution position of the work station parts of one of the workstations, and a first vertical line perpendicular to the upper and lower edges of the first template and the second template is provided in the first gap, and a second vertical line perpendicular to the upper and lower edges of the first template and the second template is provided in the second gap, and the dividing line also includes a connecting line, one end of the connecting line is connected to the first vertical line, and the other end of the connecting line is connected to the second vertical line.

[0016] Furthermore, the first gap and the second gap are located at diagonal positions, and the connecting line is an oblique line, which forms a certain angle with the upper and lower edges of the first template and the second template.

[0017] Furthermore, the first part on the first template has a sufficient strength distance from the edge of the first template; the second part on the second template has a sufficient strength distance from the edge of the second template.

[0018] Furthermore, the first template and the second template are formed by cutting from a single template.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Through the change of design ideas, the segmented design of the continuous stamping die template has become more flexible, which can shorten the die length, reduce the weight of the die itself, save the die development cost, and make the die station layout more compact and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the segmented design of the template of the continuous stamping die when the stamping parts are arranged obliquely in the conventional thinking;

[0022] Figure 2 yes Figure 1 An enlarged view of the circled portion shown;

[0023] Figure 3 It is a structural schematic diagram of the template segmentation design of the continuous stamping die when the stamping parts are arranged obliquely in the present invention;

[0024] Figure 4 yes Figure 3 An enlarged view of the circled portion shown;

[0025] Figure 5 It is a structural schematic diagram of the template segmentation design of the continuous stamping die when the stamping parts are arranged in a large step distance in the straight direction in the conventional thinking;

[0026] Figure 6 yes Figure 5 An enlarged view of the circled portion shown;

[0027] Figure 7 It is a structural schematic diagram of the template segmentation design of the continuous stamping die when the stamping parts are arranged in a large step distance in the straight direction of the present invention;

[0028] Figure 8 yes Figure 7 Magnified view of the circled portion shown. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0030] First embodiment:

[0031] like Figure 1 and Figure 2 As shown in the figure, it is a structural schematic diagram of the template segmentation design of the continuous stamping die when the stamping parts are arranged diagonally and connected in the conventional thinking. When the stamping parts are arranged diagonally and connected, the workstation parts of each station of the mold usually need to be placed diagonally accordingly. In the optimal template length dividing line area, the workstation parts of each station of the mold are scattered. According to the conventional template segmentation idea, to find a dividing line perpendicular to the upper and lower edges of the template, three empty workstations need to be set up to ensure that the first part 1 closest to the dividing line on the first template A and the second part 2 closest to the dividing line on the second template B have sufficient strength distance from the edge of the respective template. The so-called strength distance means that the first part 1, the second part 2 and the edge of the respective template must be guaranteed to have a sufficient distance to ensure the strength of the respective template. After the template segmentation design is carried out according to the conventional idea, the total length of the two templates is 922mm (including the gap between the two templates).

[0032] like Figure 3 and Figure 4 As shown, it is a structural schematic diagram of the template segmentation design of the continuous stamping die when the stamping parts are arranged obliquely in the present invention. Under the same arrangement of the stamping process, this scheme only needs to set up an empty station, find an oblique line 5, the oblique extension angle of the oblique line 5 is consistent with the oblique arrangement angle of the stamping parts, and the oblique line 5 passes through the appropriate position of this empty station, while ensuring that the first parts 1 and 2 closest to the oblique line 5 on the first template A have sufficient strength distance from the edge of the first template A, and the second parts 3 and 4 closest to the oblique line 5 on the second template B have sufficient strength distance from the edge of the second template B. Select two line segments perpendicular to the upper and lower edges of the first template A and the second template B at appropriate positions, namely the first vertical line 6 and the second vertical line 7, the first vertical line 6 is connected to one end of the oblique line 5, and the second vertical line 7 is connected to the other end of the oblique line 5, that is, the first vertical line 6, the second vertical line 7 and the oblique line 5 are connected to form a broken line, and after segmenting with this broken line as the template dividing line, the total length of the two templates is 872mm (including the gap between the two templates). This is 50mm shorter than the total length of the two templates designed in a segmented manner using conventional ideas, the total weight of the mold is also about 30kg lighter, and the mold cost will also decrease simultaneously.

[0033] Second embodiment:

[0034] When the stamping parts are arranged in a large step distance in the straight direction, the stamping parts have large dimensions and many bends around them, so a larger feed step distance is required when arranging them at the workstation, and the arrangement of the parts at the workstation is also dense. When the template needs to be segmented, the optimal template length dividing line happens to be in the area where the parts at the workstation are densely arranged.

[0035] like Figure 5 and Figure 6 The figure shows the schematic diagram of the structure of the template segmentation design of the continuous stamping die when the stamping parts are arranged in a large step in the straight direction according to the conventional thinking. According to the conventional template segmentation idea, in order to find a dividing line perpendicular to the upper and lower edges of the template, an empty station needs to be set up to ensure that the first part 1 closest to the dividing line on the first template A and the second part 2 closest to the dividing line on the second template B have sufficient strength distance from the edge of their respective templates. After the template segmentation design is carried out according to the conventional thinking, the total length of the two templates is 1012mm (including the gap between the two templates), and most of the area of ​​this empty station set up for template segmentation is idle, which looks empty and very uncoordinated.

[0036] like Figure 7 and Figure 8 As shown, it is a structural schematic diagram of the template segmentation design of the continuous stamping die when the stamping parts are arranged in a large step in the straight direction of the present invention. In the distribution position of the workstation parts of each workstation, there are two relatively diagonal areas with gaps. In these two gap areas, a line perpendicular to the upper and lower edges of the template is selected, which are the first vertical line 6 and the second vertical line 7 respectively. Then, an oblique line 5 at a certain angle to the upper and lower edges of the template is used to connect the first vertical line 6 and the second vertical line 7 to form a broken line. This broken line is the dividing line between the first template A and the second template B. At the same time, it is ensured that the first parts 1 and 2 on the first template A that are closest to this broken line have enough strength distance from the edge of the first template A, and the second parts 3 and 4 on the second template B that are closest to this broken line have enough strength distance from the edge of the second template B. In this way, the template segmentation is designed according to the idea of ​​this scheme, and there is no need to set up an additional empty workstation. The total length of the two templates after segmentation is only 838mm (including the gap between the two templates). This is 174mm shorter than the total length of the two templates designed in a conventional segmented manner, the total weight of the mold is also about 150kg lighter, and the mold cost will also be significantly reduced.

[0037] In the above two embodiments, the material of the template can be purchased as a whole piece, and cut and separated according to the position of the dividing line during processing, which can further reduce the mold cost.

[0038] In the present invention, when the part frames are scattered in the optimal template length dividing line area and a dividing line perpendicular to the upper and lower edges of the template cannot be found, we can find a fold line interspersed between the part frames as the dividing line. Of course, the two sections of the template with this fold line as the dividing line must also ensure sufficient strength, that is, there must be a certain distance from the part frame to the edge of the template.

[0039] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A continuous stamping die, characterized in that: The continuous stamping die comprises a first template and a second template arranged adjacent to each other, a dividing line between the first template and the second template being a broken line, at least one first part closest to the dividing line being provided on the first template, at least one second part closest to the dividing line being provided on the second template, the first part having a sufficient distance from an edge of the first template, and the second part having a sufficient distance from an edge of the second template, so as to ensure the strength of the respective templates; The distance refers to the distance between the first part, the second part and the edge of the template where they are located; When the stamping parts are arranged in a large step in the straight direction, the first template and the second template have a first gap and a second gap in the distribution position of the workstation parts of one of the workstations, a first vertical line perpendicular to the upper and lower edges of the first template and the second template is provided in the first gap, a second vertical line perpendicular to the upper and lower edges of the first template and the second template is provided in the second gap, and the dividing line includes the first vertical line, the second vertical line and the oblique line; One end of the oblique line is connected to the first vertical line, and the other end of the oblique line is connected to the second vertical line; When the stamping parts are arranged obliquely, the station parts of each station of the first template and the second template are also placed obliquely accordingly, and the oblique line passes through one of the stations; The first gap and the second gap are located at diagonal positions, and the oblique line forms a certain angle with the upper and lower edges of the first template and the second template.

2. The continuous stamping die according to claim 1, characterized in that: The workstation through which the oblique line passes is an empty workstation.

3. The continuous stamping die according to claim 1, characterized in that: The oblique extension angle of the oblique line is consistent with the oblique arrangement angle of the stamping parts.

4. The continuous stamping die according to claim 1, characterized in that: The first template and the second template are formed by cutting from a template.

Images