Stepped precision inner through-hole hollow rivet forming die

Abstract

The utility model relates to rivet forming die technical field discloses a precise inner through hole hollow rivet forming die with step, it includes lower mould, the lower mould upper end is fixedly installed with upper mould through a plurality of vertical settings support column, the upper mould upper end surface middle part position is fixedly installed with hydraulic press, the hydraulic press output end lower end is fixedly installed with the stamping assembly that penetrates to the upper mould, the lower mould upper end is opened with the positioning mouth, four cylinders are fixedly installed with annular array inboard fixed mounting of positioning mouth inner wall, the cylinder output end is installed with the positioning head that penetrates to positioning mouth inboard wall. The utility model effectively avoids the problem that the scrap can easily accumulate between the stamping head and the rivet, which can easily cause uneven contact between the stamping head and the rivet, and affect the quality of the rivet processing.

Description

Technical Field

[0001] This utility model relates to the field of rivet forming mold technology, and in particular to a precision hollow rivet forming mold with stepped internal through holes. Background Technology

[0002] Precision hollow rivets with stepped structures and internal through holes are key connectors in aerospace, precision electronics and other fields.

[0003] In the production of precision hollow rivets with stepped internal holes, existing technology often involves processing them using a forming mold. The multi-stage stamping head on the forming mold stamps the rivet, creating a hole that runs through the entire length of the rivet. However, the inner wall of the hole will have a raised or recessed part, i.e., a step, thus forming a precision hollow rivet with stepped internal holes.

[0004] When rivets are stamped using multi-stage stamping heads, a large amount of debris is generated. This debris tends to accumulate between the stamping head and the rivet, which can lead to uneven contact between the stamping head and the rivet, affecting the quality of rivet processing.

[0005] Therefore, a precision through-hole hollow rivet forming mold with steps is proposed. Utility Model Content

[0006] This utility model proposes a precision hollow rivet forming mold with stepped internal through holes, which solves the problems in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A precision hollow rivet forming mold with a stepped inner hole includes a lower mold. An upper mold is fixedly installed on the upper end of the lower mold by multiple vertically arranged support columns. A hydraulic press is fixedly installed at the middle position of the upper end face of the upper mold. A stamping component is fixedly installed through the lower end of the output end of the hydraulic press through the upper mold. A positioning port is opened at the upper end of the lower mold. Four cylinders are embedded and fixedly installed in a ring array on the inner wall of the positioning port. A positioning head is installed through the inner side wall of the positioning port at the output end of the cylinders.

[0009] Preferably, the stamping assembly includes a connecting block, which is fixedly installed at the middle position of the lower end face of the upper die. A connecting column is fixedly installed at the lower end of the connecting block, and an installation block is fixedly installed at the lower end of the connecting column. A multi-stage stamping head is fixedly installed at the lower end of the installation block.

[0010] Preferably, the mounting block has an internal mounting slot, in which a semiconductor refrigeration chip is fixedly mounted. A vertically arranged cooling pipe is fixedly mounted at the lower cooling end of the semiconductor refrigeration chip. The lower end of the cooling pipe passes through the upper end of the multi-stage stamping head and extends to the lower end of the multi-stage stamping head. Coolant is disposed inside the cooling pipe.

[0011] Preferably, a heat dissipation fan is fixedly installed on the upper heating end of the semiconductor cooling chip, and multiple heat dissipation holes are opened on the mounting block. One end of the heat dissipation hole is connected to the mounting slot, and the other end of the heat dissipation hole extends to the outer end of the mounting block.

[0012] Preferably, the lower mold has a material collection groove inside, and the upper end of the material collection groove is connected to the lower end of the positioning port.

[0013] Preferably, a material collection box is fixedly installed at the front end of the lower mold, and an exhaust port is opened at the front end of the material collection box, with a filter plate installed inside the exhaust port.

[0014] Preferably, the rear end of the collection box is fixedly connected to a receiving pipe, the other end of the receiving pipe passes through the front end of the lower mold and extends into the collection trough, and is fixedly connected to a feeding hood, and a pump body is fixedly installed on the receiving pipe.

[0015] Preferably, a detection column is fixedly connected to the output end of the cylinder, and an installation groove is opened at the other end of the detection column. A pressure sensor is fixedly installed at the bottom of the installation groove, and a detection rod is fixedly connected to the sensing end of the pressure sensor. The other end of the detection rod passes through the installation groove and is fixedly connected to the positioning head. A controller is fixedly installed inside the lower mold.

[0016] The pressure sensor is electrically connected to the controller, and the controller is electrically connected to the cylinder.

[0017] The beneficial effects of this utility model are:

[0018] 1. This type of precision hollow rivet forming mold with stepped internal through holes, by starting the hydraulic press, allows the downward-moving multi-stage punch head to punch the rivet to be processed. The multi-stage punch head has multiple steps, which can form multiple steps on the inner wall of the through hole formed after the rivet is punched. By starting the semiconductor cooling chip, the cooling end of the semiconductor cooling chip can cool the cooling pipe, so that the coolant in the cooling pipe continuously cools the multi-stage punch head, thereby reducing the high temperature generated during punching and preventing damage to the rivet to be processed.

[0019] 2. This type of precision hollow rivet forming mold with stepped internal through holes can generate suction by activating the pump body, allowing the debris generated during stamping to enter the collection trough. The debris is then collected in the collection box through the feed hood and the receiving pipe, thus preventing debris from accumulating between the stamping head and the rivet, which could lead to uneven contact between the stamping head and the rivet and affect the quality of rivet processing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a precision hollow rivet forming mold with a stepped inner hole proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the stamping component in a precision through-hole hollow rivet forming mold with steps proposed in this utility model.

[0022] Figure 3 This is a partial structural cross-sectional view of a precision hollow rivet forming mold with a stepped inner hole proposed in this utility model.

[0023] Figure 4 This is a partial exploded view of the precision hollow rivet forming mold with stepped internal through holes proposed in this utility model.

[0024] The following components are labeled in the diagram: 1. Lower die, 2. Support column, 3. Upper die, 4. Hydraulic press, 5. Stamping assembly, 6. Cylinder, 7. Positioning head, 8. Positioning port, 9. Collection trough, 10. Feed hood, 11. Pump body, 12. Receiving pipe, 13. Collection box, 14. Filter plate, 15. Detection column, 16. Pressure sensor, 17. Detection rod, 18. Mounting slot, 501. Connecting block, 502. Connecting column, 503. Heat dissipation hole, 504. Heat dissipation fan, 505. Mounting block, 506. Multi-stage stamping head, 507. Cooling pipe, 508. Semiconductor cooling chip, 509. Mounting slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-2 A precision hollow rivet forming mold with stepped internal through holes includes a lower mold 1. An upper mold 3 is fixedly installed on the upper end of the lower mold 1 by multiple vertically arranged support columns 2. A hydraulic press 4 is fixedly installed at the middle position of the upper end face of the upper mold 3. A stamping component 5 is fixedly installed through the lower end of the output end of the hydraulic press 4 through the upper mold 3. A positioning port 8 is opened at the upper end of the lower mold 1. Four cylinders 6 are embedded and fixedly installed in a ring array on the inner wall of the positioning port 8. A positioning head 7 is installed through the inner side wall of the positioning port 8 at the output end of the cylinders 6.

[0027] The rivet to be processed can be placed in the positioning port 8, and the cylinder 6 can be started. The operation of the cylinder 6 can drive the positioning head 7, and then the rivet can be fixed by multiple positioning heads 7.

[0028] In this embodiment, the stamping assembly 5 includes a connecting block 501, which is fixedly installed at the middle of the lower end face of the upper die 3. A connecting post 502 is fixedly installed at the lower end of the connecting block 501, and an installation block 505 is fixedly installed at the lower end of the connecting post 502. A multi-stage stamping head 506 is fixedly installed at the lower end of the installation block 505.

[0029] The mounting block 505 has a mounting slot 509 inside, and a semiconductor cooling chip 508 is fixedly installed inside the mounting slot 509. A vertically arranged cooling pipe 507 is fixedly installed at the cooling end of the semiconductor cooling chip 508. The lower end of the cooling pipe 507 passes through the upper end of the multi-stage stamping head 506 and extends to the bottom end inside the multi-stage stamping head 506. Coolant is provided inside the cooling pipe 507.

[0030] A cooling fan 504 is fixedly installed on the upper heating end of the semiconductor cooling chip 508. Multiple heat dissipation holes 503 are opened on the mounting block 505. One end of the heat dissipation hole 503 is connected to the mounting slot 509, and the other end of the heat dissipation hole 503 extends to the outer end of the mounting block 505.

[0031] By starting the hydraulic press 4, the hydraulic press 4 can drive the multi-stage punch head 506 to move downward. The moving multi-stage punch head 506 can punch the rivet to be processed. The multi-stage punch head 506 has multiple steps, so that the inner wall of the through-hole formed after the rivet is punched can form multiple steps. By starting the semiconductor cooling chip 508, the cooling end of the semiconductor cooling chip 508 can cool the cooling pipe 507, so that the coolant in the cooling pipe 507 can continuously cool the multi-stage punch head 506, thereby reducing the high temperature generated during punching and preventing damage to the rivet to be processed. By starting the cooling fan 504, the cooling fan 504 can dissipate heat from the heating end of the semiconductor cooling chip 508. The hot air generated by the heat dissipation can be discharged through the heat dissipation hole 503.

[0032] Reference Figure 3-4 The lower mold 1 is provided with a material collection trough 9. The upper end of the material collection trough 9 is connected to the lower end of the positioning port 8. A material collection box 13 is fixedly installed at the front end of the lower mold 1. An exhaust port is opened at the front end of the material collection box 13. A filter plate 14 is installed in the exhaust port. A material receiving pipe 12 is fixedly connected to the rear end of the material collection box 13. The other end of the material receiving pipe 12 passes through the front end of the lower mold 1 and extends into the material collection trough 9. A feed cover 10 is fixedly connected to it. A pump body 11 is fixedly installed on the material receiving pipe 12.

[0033] By starting the pump body 11, the pump body 11 can generate suction, which allows the debris generated by the stamping to enter the collection trough 9, and then enter the collection box 13 for collection through the suction through the feed hood 10 and the receiving pipe 12.

[0034] A detection column 15 is fixedly connected to the output end of cylinder 6. An installation groove 18 is opened at the other end of the detection column 15. A pressure sensor 16 is fixedly installed at the bottom of the installation groove 18. A detection rod 17 is fixedly connected to the sensing end of the pressure sensor 16. The other end of the detection rod 17 passes through the installation groove 18 and is fixedly connected to the positioning head 7. A controller is fixedly installed in the lower mold 1. The controller is an SC200 general-purpose controller.

[0035] Pressure sensor 16 is electrically connected to the controller, and the controller is electrically connected to cylinder 6.

[0036] Before the positioning head 7 positions the rivet, a maximum value can be set for the controller. When positioning the rivet, the pressure sensor 16 can collect information on the clamping force of the rivet through the detection rod 17 and the positioning head 7, and transmit the clamping force information to the controller. The controller converts the clamping force into data and compares it with the maximum value. When the clamping force is equal to the maximum value, it means that the clamping force has reached its maximum value. If it continues to increase, it is easy to damage the rivet. At this time, the controller sends a command to the cylinder 6, and the cylinder 6 can stop working, thereby protecting the rivet.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precision hollow rivet forming mold with stepped internal holes, comprising a lower mold (1), characterized in that, The upper end of the lower mold (1) is fixedly installed with an upper mold (3) by multiple vertically arranged support columns (2). A hydraulic press (4) is fixedly installed at the middle position of the upper surface of the upper mold (3). The lower end of the output end of the hydraulic press (4) passes through the upper mold (3) and is fixedly installed with a stamping assembly (5). The upper end of the lower mold (1) is provided with a positioning port (8). The inner wall of the positioning port (8) is embedded and fixedly installed with four cylinders (6) in a ring array. The output end of the cylinders (6) passes through the inner side wall of the positioning port (8) and is installed with a positioning head (7).

2. The precision hollow rivet forming mold with stepped internal holes according to claim 1, characterized in that, The stamping assembly (5) includes a connecting block (501), which is fixedly installed at the middle of the lower end face of the upper die (3). A connecting column (502) is fixedly installed at the lower end of the connecting block (501), and an installation block (505) is fixedly installed at the lower end of the connecting column (502). A multi-stage stamping head (506) is fixedly installed at the lower end of the installation block (505).

3. The precision hollow rivet forming mold with stepped internal holes according to claim 2, characterized in that, The mounting block (505) has an installation slot (509) inside, and a semiconductor cooling chip (508) is fixedly installed inside the installation slot (509). A vertically arranged cooling pipe (507) is fixedly installed at the cooling end of the semiconductor cooling chip (508). The lower end of the cooling pipe (507) passes through the upper end of the multi-stage stamping head (506) and extends to the bottom end inside the multi-stage stamping head (506). Coolant is provided inside the cooling pipe (507).

4. The precision hollow rivet forming mold with stepped internal holes according to claim 3, characterized in that, A cooling fan (504) is fixedly installed on the upper heating end of the semiconductor cooling chip (508). A plurality of heat dissipation holes (503) are opened on the mounting block (505). One end of the heat dissipation hole (503) is connected to the mounting slot (509), and the other end of the heat dissipation hole (503) extends to the outer end of the mounting block (505).

5. The precision hollow rivet forming mold with stepped internal holes according to claim 1, characterized in that, The lower mold (1) is provided with a material collection groove (9), and the upper end of the material collection groove (9) is connected to the lower end of the positioning port (8).

6. The precision hollow rivet forming mold with stepped internal holes according to claim 5, characterized in that, A material collection box (13) is fixedly installed at the front end of the lower mold (1). An exhaust port is opened at the front end of the material collection box (13), and a filter plate (14) is installed inside the exhaust port.

7. A precision hollow rivet forming mold with a stepped inner hole according to claim 6, characterized in that, The rear end of the collection box (13) is fixedly connected to the receiving pipe (12). The other end of the receiving pipe (12) passes through the front end of the lower mold (1) and extends into the collection trough (9), and is fixedly connected to the feeding cover (10). A pump body (11) is fixedly installed on the receiving pipe (12).

8. The precision hollow rivet forming mold with stepped internal holes according to claim 1, characterized in that, The cylinder (6) output end is fixedly connected to a detection column (15), and the other end of the detection column (15) is provided with an installation groove (18). A pressure sensor (16) is fixedly installed at the bottom of the installation groove (18). A detection rod (17) is fixedly connected to the sensing end of the pressure sensor (16). The other end of the detection rod (17) passes through the installation groove (18) and is fixedly connected to the positioning head (7). A controller is fixedly installed inside the lower mold (1). The pressure sensor (16) is electrically connected to the controller, and the controller is electrically connected to the cylinder (6).

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