Drawing machining die for arch-shaped parts

Abstract

The utility model relates to the field of sheet metal stamping machining, and discloses an arch-shaped part stretching machining die which comprises a lower die body and an upper die body arranged over the lower die body. The lower die comprises a lower supporting plate, a lower die base, a lower die plate, a lower stripping plate, a lower nitrogen spring and a positioning block, the lower die base is fixedly installed on the lower supporting plate through foot pads, the lower die plate is fixedly installed on the lower die base and provided with a cavity used for forming parts, and the movable lower stripping plate is arranged in the middle of the cavity. The bottom of the lower stripping plate movably penetrates through the lower die base and is connected to a lower nitrogen spring arranged on the lower supporting plate, and the multiple positioning blocks are arranged on the two sides of the lower die plate correspondingly and used for positioning the ends of the steel plate. The upper die comprises an upper die base, an upper padding plate and a punch, the upper padding plate is arranged on the bottom face of the upper die base, a positioning groove used for installing the punch is formed in the upper padding plate, the punch is fixedly installed in the positioning groove of the upper padding plate, and the shape of the lower surface of the punch is coupled with the cavity. According to the utility model, the steel plate can be quickly positioned and placed during processing, and the part can be quickly demoulded after being formed.

Description

Technical Field

[0001] The utility model relates to the field of sheet metal stamping processing, in particular to a bow-shaped part stretching processing die. Background Art

[0002] With the progress of my country's industry, the quality of parts has been greatly improved. However, there are still shortcomings in the processing of special parts, and bow-shaped parts are one of the more difficult to process.

[0003] As attached Figure 1 The figure shows a bow-shaped sheet metal part with a special groove and a transverse boss in the middle. Current drawing dies are not suitable for processing this special part, so a special drawing die specifically designed for this type of bow-shaped part is needed to meet production requirements. Designing this type of die requires consideration of pre-processing steel plate positioning, post-processing part demolding, and surface finish quality.

[0004] Based on this, the present application provides a bow-shaped part stretching processing mold that is easy to position, can automatically complete part demoulding, and has good surface forming quality. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art. To this end, the utility model provides a bow-shaped part stretching processing die which is easy to position, can automatically complete part demoulding and has good surface forming quality.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The cam is secured to the bottom of the mould and is secured to the workpiece by a spring which is secured to the mould base and to the workpiece during moulding.

[0008] In a preferred embodiment of the present invention, the upper die also includes an upper stripper plate and an upper nitrogen spring. The upper stripper plate is movably arranged in the middle of the punch, and its top movably passes through the upper pad and is connected to multiple upper nitrogen springs arranged on the upper die base. The upper nitrogen spring is used to enable the upper stripper plate to push the part out of the upper die after the part is formed.

[0009] In a preferred embodiment of the present invention, the lower stripping plate is arranged in the cavity at the horizontal part of the transverse boss of the bow-shaped part, and the upper stripping plate is arranged at the transverse boss of the punch for forming the bow-shaped part.

[0010] In a preferred embodiment of the present invention, the upper die base and / or the punch is provided with an avoidance hole for accommodating the positioning block.

[0011] In a preferred embodiment of the present invention, a limiting hole is provided in the lower template, and a limiting flange is provided at the bottom of the lower stripping plate.

[0012] In a preferred embodiment of the present invention, a positioning pin and a spring are further provided in the lower stripping plate. The positioning pin is movably installed in the inner cavity of the lower stripping plate, and a spring is provided at the bottom thereof and is sealed by a screw plug.

[0013] In a preferred embodiment of the present invention, the lower template and the punch are both assembled from multiple pieces.

[0014] In a preferred embodiment of the present invention, the lower die base is further provided with lower pads on both sides of the lower template, one side of the lower pad is provided with a guide groove, and guide plates are provided on both sides of the upper die base.

[0015] In a preferred embodiment of the present invention, both the upper die base and the lower die base are provided with travel limiting columns.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The mold designed by this utility model meets the processing requirements of bow-shaped parts and has good surface forming quality. By arranging a positioning block on the lower template, the end of the steel plate is positioned, and a lower stripping plate is arranged in the lower template, which can lift the steel plate horizontally. At the same time, the lower stripping plate can also push the part out of the lower mold after the part is formed, realizing the rapid positioning and placement of the steel plate during processing and the rapid demolding of the part after forming.

[0018] 2. The upper stripping plate of the upper die design can demould the parts after they are formed, preventing the parts from being stuck in the upper die. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 This is a process forming diagram of the bow-shaped part provided by the utility model;

[0021] Figure 2 This is a diagram of the mold closing state of the bow-shaped part stretching processing mold provided by the utility model;

[0022] Figure 3 yes Figure 2 Provided is a cross-sectional view of the die for the drawing process of a bow-shaped part in the closed state;

[0023] Figure 4 This is a cross-sectional view of the mold for stretching a bow-shaped part provided by the present invention in the mold-opening state;

[0024] Figure 5 yes Figure 4 Provide a cross-sectional view of the installation structure of the lower mold;

[0025] Figure 6 yes Figure 5 Provided is a cross-sectional view of the installation of the locating pin on the lower stripping plate;

[0026] Figure 7 This is a three-dimensional diagram of the lower mold provided by the utility model in the mold closing state;

[0027] Figure 8 It is a three-dimensional diagram of the upper mold provided by the utility model in the mold opening state.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1—Lower die, 1.1—Lower support plate, 1.2—Lower die base, 1.3—Lower template, 1.3.0—Limiting hole, 1.4—Lower stripping plate, 1.4.1—Limiting flange, 1.5—Lower nitrogen spring, 1.6—Location block, 1.7—Location pin, 1.8—Spring, 1.9—Lower pad, 1.9.0—Guide groove, 2—Upper die, 2.0—Avoidance hole, 2.1—Upper die base, 2.2—Upper pad, 2.3—Punch, 2.4—Upper stripping plate, 2.5—Upper nitrogen spring, 2.6—Guide plate, 3—Stroke limit column. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] This embodiment provides a bow-shaped part stretching processing die, including a lower die 1 and an upper die 2 located directly above the lower die, which are respectively installed on a base and a slide of a press.

[0035] As attached Figure 5 and attached Figure 7As shown, the lower die 1 includes a lower supporting plate 1.1, a lower die base 1.2, a lower template 1.3, a lower stripping plate 1.4, a lower nitrogen spring 1.5 and a positioning block 1.6. The lower die base 1.2 is fixedly mounted on the lower supporting plate 1.1 by a foot pad, and the lower template 1.3 is fixedly mounted on the lower die base 1.2, which has a cavity for forming parts. A movable lower stripping plate 1.4 is provided in the middle of the cavity. The upper surface of the lower stripping plate 1.4 and the cavity jointly form the surface shape of the part, and the bottom thereof movably passes through the lower die base 1.2 and is connected to the lower nitrogen spring 1.5 provided on the lower supporting plate 1.1. The lower nitrogen spring is used to enable the lower stripping plate to lift the steel plate and to enable the lower stripping plate to eject the part out of the lower die after the part is formed. A plurality of positioning blocks 1.6 are respectively provided on both sides of the lower template 1.3 for positioning the end of the steel plate. The lower die designed by the utility model can utilize the positioning block on the lower die plate to position the end of the steel plate, and can also utilize the lower stripping plate in the lower die plate to lift the steel plate horizontally, thus solving the problem of accurate placement of the steel plate on the lower die; at the same time, the lower nitrogen spring also has the function of providing a stable pressing force; after the part is formed, the lower stripping plate can also push the part out of the lower die, thereby realizing rapid demolding and solving the problem of difficult demolding.

[0036] As attached Figure 3 , Attachment Figure 4 and attached Figure 8 As shown, the upper die 2 includes an upper die base 2.1, an upper pad 2.2, a punch 2.3, an upper stripper 2.4, and an upper nitrogen spring 2.5. The upper pad 2.2 is arranged on the bottom surface of the upper die base 2.1 and is provided with a positioning groove for installing the punch 2.3. The punch 2.3 is fixedly installed in the positioning groove of the upper pad 2.2, and its lower surface shape is coupled with the cavity. The upper stripper 2.4 is movably arranged in the middle of the punch 2.3, and its top is movable through the upper pad 2.2 and connected to a plurality of upper nitrogen springs 2.5 arranged on the upper die base 2.1. The upper nitrogen springs are used to enable the upper stripper to push the part out of the upper die after the part is formed. At the same time, the upper nitrogen springs also have the function of providing a stable pressing force. The upper die designed in this embodiment, by arranging the upper stripper in the punch, under the action of the upper nitrogen spring, can achieve the effect of demolding the part after forming, preventing the part from being stuck in the upper die and difficult to remove.

[0037] Preferably, as attached Figure 7 and attached Figure 8 As shown, the lower stripper plate 1.4 is located at the horizontal part of the lateral boss of the bow-shaped part in the cavity, and the upper stripper plate 2.4 is located at the lateral boss of the punch 2.3 for forming the bow-shaped part. This design ejects the part in the middle position, and the demoulding effect is good.

[0038] Preferably, as attached Figure 8As shown, the upper die base 2.1 and / or the punch 2.3 are provided with an avoidance hole 2.0 for accommodating the positioning block 1.6 to prevent the positioning block from interfering with the upper die when the die is closed.

[0039] As attached Figure 5 As shown, the lower template 1.3 is provided with a limiting hole 1.3.0, and the bottom of the lower release plate 1.4 is provided with a limiting flange 1.4.1. This design allows the lower release plate to completely pop out of the lower template.

[0040] Preferably, as attached Figure 6 As shown, the lower stripping plate 1.4 is further provided with a positioning pin 1.7 and a spring 1.8. The positioning pin 1.7 is movably mounted in the inner cavity of the lower stripping plate 1.4, and a spring 1.8 is provided at the bottom thereof and sealed by a screw plug. This design utilizes the positioning pin on the lower stripping plate to contact the steel plate, resulting in a small contact area, which is conducive to the stamping and forming of parts.

[0041] Preferably, as attached Figure 7 and attached Figure 8 As shown, the lower mold plate 1.3 and the punch 2.3 are assembled from multiple pieces. This design can reduce mold maintenance costs. If the lower mold plate or punch is damaged, only the damaged module can be replaced without replacing the entire piece. At the same time, the split structure makes processing simpler, more convenient, and less expensive.

[0042] Preferably, as attached Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 7 and attached Figure 8 As shown, the lower die base 1.2 is provided with lower pads 1.9 on both sides of the lower die plate 1.3, and one side of the lower pad 1.9 is provided with a guide groove 1.9.0, and the upper die base 2.1 is provided with guide plates 2.6 on both sides. This design allows the upper and lower dies to play a guiding role when the mold is closed.

[0043] Preferably, as attached Figure 1 As shown, the upper die base 2.1 and the lower die base 1.2 are both provided with a travel limit column 3 for controlling the stamping of the upper die to prevent the problem of inadequate stamping or over-stamping.

[0044] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, 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 die for drawing a bow-shaped part, comprising a lower die and an upper die located directly above the lower die; characterized in that: The lower die comprises a lower supporting plate, a lower die base, a lower template, a lower stripping plate, a lower nitrogen spring and a positioning block. The lower die base is fixedly mounted on the lower supporting plate by a pad. The lower template is fixedly mounted on the lower die base, which has a cavity for molding parts. A movable lower stripping plate is provided in the middle of the cavity. The upper surface of the lower stripping plate and the cavity jointly mold the surface shape of the part. The bottom thereof movably passes through the lower die base and is connected to the lower nitrogen spring provided on the lower supporting plate. The lower nitrogen spring is used to enable the lower stripping plate to lift the steel plate and to enable the lower stripping plate to eject the part from the lower die after the part is formed. A plurality of positioning blocks are respectively provided on both sides of the lower template for positioning the end of the steel plate. The upper die includes an upper die base, an upper pad and a punch. The upper pad is arranged on the bottom surface of the upper die base and has a positioning groove for installing the punch. The punch is fixedly installed in the positioning groove of the upper pad, and the shape of its lower surface is coupled with the cavity.

2. The bow-shaped part stretching die according to claim 1, characterized in that: The upper die also includes an upper stripper plate and an upper nitrogen spring. The upper stripper plate is movably arranged in the middle of the punch, and its top movably passes through the upper pad and is connected to multiple upper nitrogen springs arranged on the upper die base. The upper nitrogen spring is used to enable the upper stripper plate to push the part out of the upper die after the part is formed.

3. The bow-shaped part stretching die according to claim 2, characterized in that: The lower stripping plate is arranged in the cavity at the horizontal part of the transverse boss of the bow-shaped part, and the upper stripping plate is arranged at the transverse boss of the punch for forming the bow-shaped part.

4. The bow-shaped part stretching die according to claim 1, characterized in that: The upper die base and / or the punch are provided with an avoidance hole for accommodating the positioning block.

5. The bow-shaped part stretching die according to claim 1, characterized in that: A limiting hole is provided in the lower template, and a limiting flange is provided at the bottom of the lower stripping plate.

6. The bow-shaped part stretching die according to claim 1, characterized in that: A positioning pin and a spring are further provided in the lower stripping plate. The positioning pin is movably installed in the inner cavity of the lower stripping plate, and a spring is provided at the bottom thereof and is sealed by a screw plug.

7. The bow-shaped part stretching die according to claim 1, characterized in that: The lower template and the punch are both assembled from multiple pieces.

8. The bow-shaped part stretching die according to claim 1, characterized in that: The lower die base is further provided with lower pads on both sides of the lower template, one side of the lower pad is provided with a guide groove, and the two sides of the upper die base are provided with guide plates.

9. The bow-shaped part stretching die according to claim 1, characterized in that: The upper die base and the lower die base are both provided with travel limiting columns.

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