Window stay connecting rod progressive die

Abstract

The utility model relates to the technical field of progressive dies, in particular to a window stay connecting rod progressive die which comprises an upper die main body and a lower die main body which are matched with each other and used for punching a strip-shaped material strip moving in a stepping mode into a plurality of sections of workpieces with inner groove notches in the end portions. The upper die main body is provided with the first trimming stamping knife, the second trimming stamping knife and the third trimming stamping knife, through a three-section type punching structure, particularly, the first trimming stamping knife punches firstly to determine the position of an inner groove notch, the second trimming stamping knife further punches to form a main outline, and the size and shape precision of the inner groove notch at the end of a workpiece can be accurately controlled; due to the arrangement of the material cutting and extruding stamping knife, the strength of the material in the punching process is effectively enhanced, strain generated due to insufficient material strength is reduced, and therefore the possibility that the end of a workpiece deforms is greatly reduced, the deviation of the end of the punched hardware is reduced, and higher precision can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous moulds, in particular to a window support connecting rod continuous mould. Background Art

[0002] As an advanced mold technology, the continuous mold has many advantages in hardware processing. The positioning accuracy between each process of the continuous mold is high, which can effectively ensure the dimensional accuracy and shape accuracy of the hardware. At the same time, the continuous mold is used for processing, and only one positioning is required to complete multiple processes in one stamping stroke, which greatly reduces the processing time and the transportation time between processes, thereby significantly improving production efficiency. In addition, the continuous mold has a high degree of automation, which can reduce manual operation, reduce labor intensity and safety risks, and can improve material utilization and reduce production costs.

[0003] like Figure 1 As shown, there is an existing long strip structural hardware for window support connecting rods, one end of which is set as a special-shaped hook structure with an internal groove notch. During the processing process, if the structure is punched once, the punching knife structure is complex and difficult to process and manufacture, and a single punching will cause a large reverse force on the punching knife, which will reduce the service life of the punching knife to a certain extent; in addition, during the punching process, the connection between the special-shaped hook structure and the main body will produce a large extrusion, and the connection position will experience a large degree of extrusion or easy disconnection, resulting in an increase in the product defective rate; in this regard, it is necessary to propose a technical solution to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0005] A window stay connecting rod continuous die comprises an upper die body and a lower die body that cooperate with each other, the upper die body and the lower die body being used to punch a long strip of material that moves in a step-by-step manner into multiple sections of workpieces with inner grooves and notches at the ends thereof, the upper die body being provided with a first trimming punch, a second trimming punch and a third trimming punch, the first trimming punch being used to punch holes in the material strip to form the inner grooves and notches at the ends of the workpieces, the second trimming punch being used to further punch holes in the material strip to form the main contour of the ends of the workpieces, and the third trimming punch being used to cut the material strip at positions corresponding to the punching holes to form workpieces that are released from the continuous die;

[0006] The first trimming punch, the second trimming punch and the third trimming punch are arranged in sequence to form a three-stage punching structure for the material strip, wherein a cutting punch is also provided at the position of the upper mold body corresponding to the second trimming punch, and the cutting punch acts on the side of the material strip that is opposite to the cutting position of the second trimming punch.

[0007] Preferably, the cutting edge surface of the first trimming punch is an inclined square structure, and the cutting edge surface of the second trimming punch is a right-angled structure perpendicular to the first trimming punch, so that the first trimming punch and the second trimming punch cut the strip into an inclined U-shaped hole structure.

[0008] Preferably, parallel parts parallel to both sides of the strip are provided on the cutting edge surfaces of the first trimming punch and the second trimming punch, and the first trimming punch and the second trimming punch form a rectangular interval between the U-shaped hole structure and both sides of the strip through the parallel parts.

[0009] Preferably, the width of the rectangular interval is 1.60 mm - 1.70 mm, and the thickness of the strip is 2.45 mm - 2.55 mm.

[0010] Preferably, the upper die body includes an upper die base, an upper backing plate installed at the lower end of the upper die base, an upper clamping plate installed at the lower end of the upper backing plate for fixing the punch, a stop plate installed at the lower end of the upper clamping plate, and a stripper plate installed at the lower end of the stop plate. The lower die body includes a lower die base, a lower backing plate installed on the lower die base, and a lower template installed on the lower backing plate. The lower template is对接配合 with the stripper plate.

[0011] Preferably, a punching punch for opening a pilot hole on the strip is further provided at a position on the upper die body before the first trimming punch, and a positioning pin structure for docking with the pilot hole is also provided on the upper die body.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] Through the three-stage punching structure, especially the first trimming punch first punches a hole to determine the position of the inner groove notch, and the second trimming punch further punches to form the main contour, the size and shape accuracy of the inner groove notch at the end of the workpiece can be accurately controlled; the setting of the cutting and extruding punch effectively enhances the strength of the material during the punching process, reduces the strain caused by insufficient material strength, and thus greatly reduces the possibility of deformation at the end of the workpiece, making the deviation of the end of the punched hardware part smaller and achieving higher accuracy.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the workpiece in the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the stripper plate in the present utility model;

[0019] Figure 4 It is a layout drawing of the strip in the present utility model;

[0020] Figure 5 It is a schematic structural diagram of the workpiece for the window stay link in the present utility model.

[0021] The reference numerals and names in the figure are as follows:

[0022] Upper die main body 10, upper die base 11, upper backing plate 12, upper clamping plate 13, stop plate 14, stripper plate 15, lower die main body 20, lower die base 21, lower backing plate 22, lower template 23, strip 30, inner groove notch 31, U-shaped hole structure 32, first trimming punch 41, second trimming punch 42, third trimming punch 43, cut and squeeze punch 44, parallel part 45, punching punch 46, positioning pin structure 47. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 2 , this embodiment proposes a continuous die for window stay links, including a mutually cooperating upper die main body 10 and a lower die main body 20. The upper die main body 10 and the lower die main body 20 are used to punch a long strip-shaped step-by-step moving strip 30 into multiple workpieces with inner groove notches 31 at the ends. The upper die main body 10 is provided with a first trimming punch 41, a second trimming punch 42, and a third trimming punch 43. The first trimming punch 41 is used to punch holes in the strip 30 to form the inner groove notches 31 at the ends of the workpieces. The second trimming punch 42 is used to further punch the punched holes in the strip 30 to form the main contour at the ends of the workpieces. The third trimming punch 43 is used to cut off the corresponding punched positions of the strip 30 to form workpieces that are separated from the continuous die;

[0025] The first trimming punch 41, the second trimming punch 42 and the third trimming punch 43 are arranged in sequence to form a three-stage punching structure for the material strip 30, wherein a cutting punch 44 is further provided at the position of the upper mold body 10 corresponding to the second trimming punch 42, and the cutting punch 44 acts on the side of the material strip 30 that is opposite to the punching position of the second trimming punch 42.

[0026] In the above technical solution, the first trimming punch 41 punches a hole on the material strip 30, and the position and shape of this hole are set according to the size of the groove notch 31 in the workpiece; the second trimming punch 42 further punches the punched hole on the material strip 30, thereby forming the main outline of the end of the workpiece. In this process, the cutting and extruding punch 44 set at the position of the upper mold body 10 corresponding to the second trimming punch 42 simultaneously acts on the side of the material strip 30 that is opposite to the punching position of the second trimming punch 42. The function of the cutting and extruding punch 44 is to extrude the material during the punching process, enhance the strength of the material, and reduce the generation of strain; the third trimming punch 43 cuts the material strip 30 at the position corresponding to the punching hole, so that the processed workpiece is separated from the continuous mold, forming multiple sections of workpieces with internal groove notches 31 at the ends.

[0027] Therefore, through a reasonable punching sequence and the action of the cutting punch 44, the product can be formed in the continuous mold in one step without the need for other punching processing later. The continuous mold has a high degree of automation, which can reduce manual operation, reduce labor intensity and safety risks. The window support connecting rod continuous mold does not require too much manual intervention during the processing process and can carry out continuous production stably. The characteristics of the continuous mold itself make it possible to complete multiple processes in one stamping stroke with only one positioning. In this continuous mold, the first trimming punch 41, the second trimming punch 42 and the third trimming punch 43 are arranged in sequence to quickly and efficiently complete the punching, contour cutting and cutting operations, greatly reducing the processing time and the transportation time between processes, and significantly improving production efficiency. Through the three-stage punching structure, especially the first trimming punch 41 first punches to determine the position of the inner groove notch 31, and the second trimming punch 42 further punches to form the main contour, the size and shape accuracy of the inner groove notch 31 at the end of the workpiece can be accurately controlled; the setting of the cutting punch 44 effectively enhances the strength of the material during the punching process, reduces the strain caused by insufficient material strength, and thus greatly reduces the possibility of deformation of the workpiece end, so that the deviation of the punched hardware end is reduced, and higher precision can be achieved.

[0028] Please refer to Figure 3-4, in this embodiment, it is further proposed that the cutting surface of the first trimming punch 41 is an inclined square structure, and the cutting surface of the second trimming punch 42 is a right-angled structure perpendicular to the first trimming punch 41. When the strip 30 moves step by step into the progressive die, first, the first trimming punch 41 performs punching on the strip 30 with its inclined square structure, and then the second trimming punch 42 further punches the strip 30 with a right-angled structure. The two act together to punch the strip 30 into an inclined U-shaped hole structure 32, so that the first trimming punch 41 and the second trimming punch 42 punch the strip 30 into an inclined U-shaped hole structure 32; the specific shape structure and the cooperation mode of the first trimming punch 41 and the second trimming punch 42 can accurately punch the strip 30 into an inclined U-shaped hole structure 32. This precise punching shape provides an accurate basis for the formation of the inner groove notch 31 at the end of the subsequent workpiece, ensuring the shape accuracy of the workpiece. The inner groove notch 31 formed at the end of the workpiece is a limiting structure for the window stay link, as Figure 5 shown. During its subsequent assembly process, this workpiece serves as the main body of the link. The hook-shaped structure designed at the end of the link main body is bent to form a limiting structure to resist other rod-shaped structures connected to the link. Parallel portions 45 parallel to both sides of the strip 30 are provided on the cutting surfaces of the first trimming punch 41 and the second trimming punch 42. The first trimming punch 41 and the second trimming punch 42 form a rectangular interval between the U-shaped hole structure 32 and both sides of the strip 30 through the parallel portions 45; the width of the rectangular interval is 1.60 mm - 1.70 mm, and the thickness of the strip 30 is 2.45 mm - 2.55 mm. By controlling the width of the rectangular interval within the range of 1.60 mm - 1.70 mm and the thickness of the strip 30 within the range of 2.45 mm - 2.55 mm, the material deformation and stress distribution during the punching process can be effectively balanced. Such dimensional control can reduce the deformation and error caused by the mismatch between the material thickness and the punching shape, and improve the dimensional accuracy of the workpiece.

[0029] Please refer to Figure 2-3The present embodiment further proposes that the upper die body 10 includes an upper die base 11, an upper pad 12 installed at the lower end of the upper die base 11, an upper clamping plate 13 installed at the lower end of the upper pad 12 for fixing the punching knife, a stop plate 14 installed at the lower end of the upper clamping plate 13, and a stripping plate 15 installed at the lower end of the stop plate 14. The upper die base 11 serves as a supporting structure for the entire upper die part, the upper pad 12 plays a role of buffering and dispersing pressure, the upper clamping plate 13 is used to fix the punching knife, the stop plate 14 limits the stamping process, and the stripping plate 15 separates the material strip 30 from the punching knife after the stamping is completed. The lower die body 20 includes a lower die base 21, a lower pad 22 installed on the lower die base 21, and a lower template 23 installed on the lower pad 22. The lower die base 21 provides support, and the lower pad 22 also plays a buffering role. The lower template 23 is docked with the stripping plate 15 of the upper die body 10 to work together Complete the stamping process of the material strip 30; a punching cutter 46 for opening a guide hole on the material strip 30 is also provided at a position before the first trimming cutter 41 on the upper mold body 10, and a positioning pin structure 47 for docking the guide hole is also provided on the upper mold body 10. After the material strip 30 enters the continuous mold, the punching cutter 46 located on the upper mold body 10 and before the first trimming cutter 41 opens a guide hole on the material strip 30. As the material strip 30 moves step by step, the positioning pin structure 47 on the upper mold body 10 docks with the guide hole, which plays a role of precise positioning. The first trimming cutter 41, the second trimming cutter 42 and the third trimming cutter 43 punch, cut and cut the material strip 30 in a predetermined order. In this process, the cooperation of the positioning pin and the guide hole ensures that the position of each cutter on the material strip 30 is accurate, thereby ensuring the processing accuracy.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A window support connecting rod continuous die, comprising an upper die body (10) and a lower die body (20) that cooperate with each other, wherein the upper die body (10) and the lower die body (20) are used to punch a long strip of material (30) that moves in a step-by-step manner into multiple sections of workpieces with inner groove notches (31) at the ends, characterized in that: The upper die body (10) is provided with a first trimming punch (41), a second trimming punch (42) and a third trimming punch (43). The first trimming punch (41) is used to punch holes in the strip (30) to form an inner groove notch (31) at the end of the workpiece. The second trimming punch (42) is used to further punch the punched position on the strip (30) to form the main contour of the end of the workpiece. The third trimming punch (43) is used to cut off the strip (30) at the position corresponding to the punched hole to form a workpiece separated from the progressive die. The first trimming punch (41), the second trimming punch (42) and the third trimming punch (43) are arranged in sequence to form a three-stage punching structure for the strip (30). Among them, a cutting and squeezing punch (44) is also provided at the position of the upper die body (10) corresponding to the second trimming punch (42). The cutting and squeezing punch (44) acts on the side of the strip (30) opposite to the position punched by the second trimming punch (42).

2. A window stay connecting rod continuous die according to claim 1, characterized in that: The cutting surface of the first trimming punch (41) is an inclined square structure, and the cutting surface of the second trimming punch (42) is a right-angled structure perpendicular to the first trimming punch (41), so that the first trimming punch (41) and the second trimming punch (42) punch the strip (30) into an inclined C-shaped hole structure (32).

3. The window stay connecting rod continuous mold according to claim 2, characterized in that: Parallel parts (45) parallel to both sides of the strip (30) are provided on the cutting surfaces of the first trimming punch (41) and the second trimming punch (42). The first trimming punch (41) and the second trimming punch (42) form a rectangular interval between the C-shaped hole structure (32) and both sides of the strip (30) through the parallel parts (45).

4. The window stay connecting rod continuous mold according to claim 3, characterized in that: The width of the rectangular interval is 1.60 mm - 1.70 mm, and the thickness of the strip (30) is 2.45 mm - 2.55 mm.

5. A window stay connecting rod continuous die according to any one of claims 1 to 4, characterized in that: The upper die body (10) includes an upper die base (11), an upper backing plate (12) installed at the lower end of the upper die base (11), an upper clamping plate (13) installed at the lower end of the upper backing plate (12) for fixing the punch, a stop plate (14) installed at the lower end of the upper clamping plate (13), and a stripper plate (15) installed at the lower end of the stop plate (14). The lower die body (20) includes a lower die base (21), a lower backing plate (22) installed on the lower die base (21), and a lower template (23) installed on the lower backing plate (22). The lower template (23) is对接配合 with the stripper plate (15).

6. The window stay connecting rod continuous die according to claim 5, characterized in that: A punching punch (46) for punching a pilot hole in the strip (30) is also provided at the position of the upper die body (10) before the first trimming punch (41). A positioning pin structure (47) for docking the pilot hole is also provided on the upper die body (10).

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