Stretching and bending sheet metal part die

Abstract

The utility model relates to the technical field of dies, in particular to a stretching and bending sheet metal part die which comprises an upper die, a lower die, an upper limiting column, an upper positioning hole, an upper die core, a lower positioning hole, a lower die core and a lower limiting column, the number of the anti-rust columns is two, and the anti-rust columns are arranged on the side wall of the upper die and the side wall of the lower die in a penetrating mode. Limiters are arranged on the two sides of the lower die core. When equipment is started, a part is placed between the limiting stopper and the lower die core to be fixed, the limiting stopper can be far away from the part and rotate to be completely not in contact in the attaching process of the upper die and the lower die, the part machining effect is not affected, and the problem that the part moves when the shape of the part is irregular is solved; rust can be reduced into metal iron, so that rust of the die is reduced, and the service life of the die is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a stretching and bending sheet metal mold. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates (usually less than 6mm), including shearing, punching / cutting / compounding, folding, welding, riveting, splicing, forming, etc. Its notable feature is that the thickness of the same part is consistent. The product processed by the sheet metal process is called a sheet metal part. The sheet metal mold is usually divided into two parts, including a limit column that helps the upper and lower molds to fit together, a threaded hole for installing the mold, and a mold core that fixes the shape of the stretched and bent sheet metal part. When the part structure is complex, has no obvious symmetry, and has different depths, the parts processed during the fitting process of the upper and lower molds are prone to the problem of parts moving during the molding process. For example, the existing Chinese patent CN114951444B discloses a technical solution that fixes the parts by setting a pressing part and a lower mold part. The molding process is carried out in stages. The structure is relatively complex and increases the maintenance cost. Utility Model Content

[0003] The purpose of the utility model is to provide a stretching and bending sheet metal mold, including an upper mold, a lower mold, an upper positioning column, an upper positioning hole, an upper mold core, a lower positioning hole, a lower mold core and a lower limiting column, the number of the anti-rust columns is two, the side walls of the upper mold and the side walls of the lower mold are penetrated by anti-rust columns, and limiters are provided on both sides of the lower mold core.

[0004] Preferably: the anti-rust column comprises a copper column, an anti-rust tube and a zinc column, the anti-rust tube is cylindrical and hollow in shape, a saturated potassium chloride solution is arranged inside the anti-rust tube, a copper column is fixedly installed at one end of the anti-rust tube, the copper column material is metallic copper, the copper column passes through the side walls of the upper mold and the lower mold, and a zinc column is fixedly installed at the other end of the anti-rust tube, the zinc column material is metallic zinc, and the zinc column passes through the side walls of the upper mold and the lower mold.

[0005] Preferably: the limiter includes an offset groove, a spring, a clamping rod and a rotating shaft, the offset groove is rectangular and hollow in shape, a rotating shaft is fixedly installed at the bottom end of the offset groove, the inside of the rotating shaft is movably connected to the bottom end of the clamping rod through a bearing, the clamping rod is hook-shaped, a spring is fixedly installed on the side of the clamping rod away from the lower mold core, and the other end of the spring is fixedly connected to the bottom end of the offset groove.

[0006] Preferably, the outer dimensions of the upper mold and the lower mold match each other.

[0007] Preferably: the upper limit column and the lower limit column are arranged in a rectangular array, the upper limit column is cylindrical in shape, the lower limit column is a cylindrical tube in shape, the size of the upper limit column is compatible with the internal size of the lower limit column, and the position of the upper limit column is compatible with the position of the lower limit column.

[0008] Preferably, the upper positioning hole and the lower positioning hole are both cylindrical holes, and the sizes and positions of the upper positioning hole and the lower positioning hole are matched.

[0009] Preferably, the upper mold core and the lower mold core are matched in size and position.

[0010] Beneficial Effects

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When the utility model is used, the upper mold and the lower mold are respectively installed in the use position through the threaded hole positioning hole, etc., the clamping rod is moved away, the rotating shaft makes the clamping rod rotate only in the offset groove, the part is placed on the lower mold core position of the lower mold, the clamping rod is lowered, the extension of the spring makes the clamping rod close to the part so that it will not move, the upper mold and the lower mold slowly move together, the angle of the clamping rod itself is relatively inclined, the upper mold will exert a downward pressure on the clamping rod to make it rotate away from the part, when the upper mold and the lower mold are fully fitted, the clamping rod will completely enter the offset groove, does not touch the part and does not affect the processing effect, the upper mold rises and the clamping rod rotates to be close to the lower mold core under the extension of the spring, the part is put between the lower mold core and the clamping rod again, and a working cycle is completed.

[0013] 2. When the utility model is used, the material of the zinc column itself is easy to oxidize. The oxidation of the zinc column will be accelerated under the microelectrode composed of the anti-rust tube and the copper column. At this time, a weak current will pass through the mold, which can reduce the rust into metallic iron, thereby reducing the rust of the mold and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the practical anti-rust column;

[0016] Figure 3 This is a plan view of the practical limiter.

[0017] In the figure: 1. upper mold; 2. lower mold; 3. upper limit column; 4. upper positioning hole; 5. anti-rust column; 501. copper column; 502. anti-rust tube; 503. zinc column; 6. upper mold core; 7. limiter; 701. offset groove; 702. spring; 703. clamping rod; 704. rotating shaft; 8. lower positioning hole; 9. lower mold core; 10. lower limit column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 - Figure 3 The figure shows a stretching and bending sheet metal mold of the present invention, including an upper mold 1, a lower mold 2, an upper limit column 3, an upper positioning hole 4, an upper mold core 6, a lower positioning hole 8, a lower mold core 9 and a lower limit column 10. There are two anti-rust columns 5, and the side walls of the upper mold 1 and the lower mold 2 are penetrated by anti-rust columns 5. Limiters 7 are provided on both sides of the lower mold core 9.

[0020] The anti-rust column 5 includes a copper column 501, an anti-rust tube 502 and a zinc column 503. The anti-rust tube 502 is cylindrical and hollow. A saturated potassium chloride solution is arranged inside the anti-rust tube 502. A copper column 501 is fixedly installed at one end of the anti-rust tube 502. The copper column 501 is made of metallic copper and penetrates the side walls of the upper mold 1 and the lower mold 2. A zinc column 503 is fixedly installed at the other end of the anti-rust tube 502. The zinc column 503 is made of metallic zinc and penetrates the side walls of the upper mold 1 and the lower mold 2. The material of the zinc column 503 itself is easily oxidized. The oxidation of the zinc column 503 will be accelerated under the microelectrode formed by the anti-rust tube 502 and the copper column 501. At this time, a weak current will pass through the mold, which can reduce the rust to metallic iron, thereby reducing the rust of the mold and extending its service life.

[0021] The limiter 7 includes an offset groove 701, a spring 702, a clamping rod 703 and a rotating shaft 704. The offset groove 701 is rectangular and hollow in shape. The rotating shaft 704 is fixedly installed at the bottom end of the offset groove 701. The rotating shaft 704 is movably connected to the bottom end of the clamping rod 703 through a bearing. The clamping rod 703 is hook-shaped. A spring 702 is fixedly installed on the side of the clamping rod 703 away from the lower mold core 9. The other end of the spring 702 is fixedly connected to the bottom end of the offset groove 701. When the clamping rod 703 is moved away, the rotating shaft 704 allows the clamping rod 703 to rotate only in the offset groove 701. Place it on the position of the lower mold core 9 of the lower mold 2, put down the clamping rod 703, the extension of the spring 702 makes the clamping rod 703 close to the part so that it will not move, the upper mold 1 and the lower mold 2 slowly move together along the positioning column, the clamping rod 703 itself has a relatively inclined angle, the upper mold 1 will exert a downward pressure on the clamping rod 703 to make it rotate away from the part, when the upper mold 1 and the lower mold 2 are completely fitted, the clamping rod 703 will completely enter the offset groove 701, without contacting the part and not affecting the processing effect, the upper mold 1 rises and the clamping rod 703 rotates to be close to the lower mold core 9 under the extension of the spring 702, and the part can be put between the lower mold core 9 and the clamping rod 703 again.

[0022] The outer dimensions of the upper mold 1 and the lower mold 2 are adapted to each other, and the upper mold 1 and the lower mold 2 are respectively installed at the use position through threaded holes, positioning holes, etc.

[0023] The upper limit column 3 and the lower limit column 10 are arranged in a rectangular array, the upper limit column 3 is cylindrical in shape, and the lower limit column 10 is a cylindrical tube in shape. The size of the upper limit column 3 is adapted to the internal size of the lower limit column 10, and the position of the upper limit column 3 is adapted to the position of the lower limit column 10. The limit columns help the upper mold 1 and the lower mold 2 to fit along a fixed direction.

[0024] The upper positioning hole 4 and the lower positioning hole 8 are both cylindrical holes in shape, and the upper positioning hole 4 and the lower positioning hole 8 are matched in size and position, and the positioning holes help the upper mold 1 and the lower mold 2 to fit together.

[0025] The upper mold core 6 and the lower mold core 9 are matched in size and position, and the shapes of the upper mold core 6 and the lower mold core 9 determine the shape of the part being stretched and bent.

[0026] The working principle of the utility model is as follows: the upper mold 1 and the lower mold 2 are respectively installed in the use position through the threaded hole positioning hole, etc., the clamping rod 703 is moved away, the rotating shaft 704 makes the clamping rod 703 only rotate in the offset groove 701, the part is placed on the position of the lower mold core 9 of the lower mold 2, the clamping rod 703 is put down, the extension of the spring 702 makes the clamping rod 703 close to the part so that it will not move, the upper mold 1 and the lower mold 2 slowly move together along the positioning column, the clamping rod 703 itself is inclined, the upper mold 1 will exert a downward pressure on the clamping rod 703 to make it rotate away from the part, and the upper mold 1 and When the lower mold 2 is fully fitted, the clamping rod 703 will completely enter the offset groove 701, without touching the parts and affecting the processing effect. The upper mold 1 rises and the clamping rod 703 rotates to be close to the lower mold core 9 under the extension of the spring 702. The parts are placed between the lower mold core 9 and the clamping rod 703 again, and a working cycle is completed. The material of the zinc column 503 itself is easily oxidized. The oxidation of the zinc column 503 will be accelerated under the microelectrode formed by the rust-proof tube 502 and the copper column 501. At this time, a weak current will pass through the mold, which can reduce the rust into metallic iron, thereby reducing the rust of the mold and extending its service life.

[0027] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A sheet metal stretch bending die, comprising an upper die (1), a lower die (2), an upper limit post (3), an upper positioning hole (4), an anti-rust post (5), an upper die core (6), a lower positioning hole (8), a lower die core (9) and a lower limit post (10), characterized in that: The number of the anti-rust columns (5) is two, and the side walls of the upper mold (1) and the lower mold (2) are both penetrated by the anti-rust columns (5), and both sides of the lower mold core (9) are provided with limiters (7); The anti-rust column (5) comprises a copper column (501), an anti-rust tube (502) and a zinc column (503). The anti-rust tube (502) is cylindrical and hollow. A saturated potassium chloride solution is arranged inside the anti-rust tube (502). The copper column (501) is fixedly mounted on one end of the anti-rust tube (502). The copper column (501) is made of metal copper. The copper column (501) penetrates the side walls of the upper mold (1) and the lower mold (2). The zinc column (503) is fixedly mounted on the other end of the anti-rust tube (502). The zinc column (503) is made of metal zinc. The zinc column (503) penetrates the side walls of the upper mold (1) and the lower mold (2).

2. A stretch bending sheet metal mold according to claim 1, characterized in that: The limiter (7) comprises an offset groove (701), a spring (702), a clamping rod (703) and a rotating shaft (704); the offset groove (701) is rectangular and hollow in shape; a rotating shaft (704) is fixedly installed at the bottom end of the offset groove (701); the inside of the rotating shaft (704) is movably connected to the bottom end of the clamping rod (703) via a bearing; the clamping rod (703) is hook-shaped; a spring (702) is fixedly installed on the side of the clamping rod (703) away from the lower mold core (9); the other end of the spring (702) is fixedly connected to the bottom end of the offset groove (701).

3. A stretch bending sheet metal mold according to claim 1, characterized in that: The outer dimensions of the upper mold (1) and the lower mold (2) are adapted to each other.

4. A stretch bending sheet metal mold according to claim 1, characterized in that: The upper limit column (3) and the lower limit column (10) are arranged in a rectangular array; the upper limit column (3) is cylindrical in shape, and the lower limit column (10) is a cylindrical tube in shape; the size of the upper limit column (3) is compatible with the internal size of the lower limit column (10); and the position of the upper limit column (3) is compatible with the position of the lower limit column (10).

5. The stretch bending sheet metal mold according to claim 1, characterized in that: The upper positioning hole (4) and the lower positioning hole (8) are both cylindrical holes in shape, and the sizes and positions of the upper positioning hole (4) and the lower positioning hole (8) are matched.

6. The stretch bending sheet metal mold according to claim 1, characterized in that: The upper mold core (6) and the lower mold core (9) are matched in size and position.

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