Punching and flanging device for shunting pipeline

Abstract

The utility model discloses a shunting pipeline punching and flanging device which comprises a punch rod installed in a punching die of a punching and flanging machine, an adjustable flanging mechanism connected to the tail end of the punch rod, and a punching needle fixed to the end, away from the punch rod, of the adjustable flanging mechanism. And the adjustable flanging mechanism comprises six arc edge unfolding plates which are arranged in an annular array. A traditional punching and flanging mechanism is designed in a split mode, the adjustable flanging mechanism is arranged between the punching needle and the punch rod, the disc is rotated through the servo motor, the arc-shaped through groove in the disc drives the movable rod to move in the arc direction, and then the six-petal arc edge unfolding plate on the outer side of the movable rod is naturally unfolded; in the return stroke after punching of the punching needle, the unfolded arc edge unfolding plate conducts flanging treatment on the edge of a hole through the slope face of the outer ring and the expansion posture of the arc edge unfolding plate, and meanwhile the hole diameter of the flanging can be controlled through the unfolding degree of the arc edge unfolding plate.

Description

Technical Field

[0001] The utility model relates to the technical field of punching and flanging instruments, and particularly relates to a punching and flanging device for a shunt pipeline. Background Technique

[0002] In the copper pipe layout design of a radiator, in order to improve the heat dissipation efficiency of the radiator during the convective heat dissipation process, a connecting manifold is often adopted between copper pipes. Before connecting the manifolds between copper pipes, it is necessary to punch holes in the shunt pipeline of the radiator, and often a flanging operation is performed on the holes after punching to facilitate subsequent manifold welding.

[0003] In the current punching and flanging processing of copper pipes, the punching and flanging machine utilizes the ultrasonic metal welding principle to convert high-frequency electric energy into mechanical vibration through a transducer device and act on the copper pipe, and heats the metal in the hottest central area of the copper pipe to a highly plastic or molten state. The punch impacts this area of the copper pipe to achieve the punching operation, and when the punch returns, the flanging section on the punch flanges the hole. However, restricted by the diameter of the flanging section of the punch, the diameter of the hole edge after flanging cannot be adjusted. Therefore, those skilled in the art propose a punching and flanging device for a shunt pipeline. Content of the Utility Model

[0004] The purpose of the utility model is to provide a punching and flanging device for a shunt pipeline in view of the deficiencies of the prior art to solve the problems raised in the background technique.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A punching and flanging device for a shunt pipeline includes a punch rod installed in the stamping die of a punching and flanging machine, an adjustable flanging mechanism connected to the end of the punch rod, and a punch needle fixed to the end of the adjustable flanging mechanism away from the punch rod;

[0007] The adjustable flanging mechanism includes six arc-edge expansion plates arranged in a circular array, a disc located between the arc-edge expansion plates, and a servo motor fixed to the end face of the punch rod; wherein, the output shaft of the servo motor is fixed with a transmission shaft through a coupling, and the other end of the transmission shaft is connected to the end face of the disc close to the servo motor;

[0008] Activity rods are fixed on the side walls of the arc-edge expansion plates close to each other, and six arc-shaped through grooves arranged in a circular array are formed inside the disc. Among them, the activity rods are arranged to move in an arc in the arc-shaped through grooves.

[0009] As a preferred solution of the punching and flanging device for the shunt pipeline, slopes are provided on the outer surfaces of the arc-edge expansion plates, and the slopes on the outer surfaces of the arc-edge expansion plates are higher at the end close to the punching needle than at the end close to the punch rod, for flanging the edge of the hole after the punching needle is pulled out of the hole in the pipeline.

[0010] As a preferred solution of the punching and flanging device for the shunt pipeline, support plates are fixed on the surfaces of the arc-edge expansion plates close to each other, connecting rods are fixed on the sides of the support plates close to each other, and the ends of the connecting rods away from the support plates are connected to the ends of the movable rods outside the arc-shaped through slots.

[0011] As a preferred solution of the punching and flanging device for the shunt pipeline, limit blocks for preventing the deviation from the arc-shaped through slot are fixed at both ends of the movable rod, and the movable rod is at the lowest position of the arc-shaped through slot when the arc-edge expansion plates are closed to each other.

[0012] As a preferred solution of the punching and flanging device for the shunt pipeline, the ends of the arc-edge expansion plates away from the punching needle are annularly and arrayedly fixed on the end surface of the punch rod, and the other ends of the arc-edge expansion plates are naturally expanded with the axis of the punch rod as the base point.

[0013] As a preferred solution of the punching and flanging device for the shunt pipeline, the power access end and the control end of the servo motor are both connected to an external controller and a power source through wire harnesses penetrating the punch rod.

[0014] As a preferred solution of the punching and flanging device for the shunt pipeline, a high-strength round rod is fixed on the end surface of the punching needle close to the punch rod, and the end of the high-strength round rod away from the punching needle is inserted into the adjustable flanging mechanism and rotatably connected to the left side wall of the disc.

[0015] As a preferred solution of the punching and flanging device for the shunt pipeline, wear-resistant coatings are electroplated on the outer ring surfaces of the arc-edge expansion plates, for reducing the friction between the outer ring surfaces of the arc-edge expansion plates and the edges of the holes on the shunt pipeline.

[0016] Advantages of the present utility model:

[0017] The present utility model separates the traditional punching and flanging mechanism. By arranging an adjustable flanging mechanism between the punching needle and the punch rod, the servo motor rotates the disc, and the arc-shaped through slot on the disc drives the movable rod to move along the arc path, so that the six-piece arc-edge expansion plates outside the movable rod are naturally expanded. When the punching needle returns after punching, the expanded arc-edge expansion plates use their outer slopes and expanded postures to flanging the edges of the holes. At the same time, the flanging aperture can be controlled by the expansion degree of the arc-edge expansion plates. Description of the drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments of the present utility model. Obviously, the attached drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these attached drawings.

[0019] Figure 1 is the overall structural schematic diagram of the punching and flanging device described in the present utility model;

[0020] Figure 2 is the split structural schematic diagram of the punching and flanging device described in the present utility model;

[0021] Figure 3 is the structural schematic diagram of the adjustable flanging mechanism described in the present utility model.

[0022] In the figure:

[0023] 1. Punch rod; 2. Adjustable flanging mechanism; 21. Arc edge expansion plate; 22. Movable rod; 23. Support plate; 24. Connecting rod; 25. Arc-shaped through groove; 26. Disc; 27. Servo motor; 28. Transmission shaft; 3. Punching needle; 4. High-strength round rod. Detailed implementation manners

[0024] The following will further illustrate the technical solutions of the present utility model in conjunction with the attached drawings and through specific implementation manners.

[0025] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0026] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In the description of the present utility model, unless otherwise clearly specified and defined, if terms such as "connection" are used to indicate the connection relationship between components, such terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] As Figures 1 to 3 shown, the present utility model provides a shunt pipeline punching and flanging device, which includes a punch rod 1 installed in the stamping die of a punching and flanging machine, an adjustable flanging mechanism 2 connected to the end of the punch rod 1, and a punch pin 3 fixed to one end of the adjustable flanging mechanism 2 away from the punch rod 1;

[0029] The adjustable flanging mechanism 2 includes six arc-edge expansion plates 21 arranged in a circular array, a disc 26 located between the arc-edge expansion plates 21, and a servo motor 27 fixed to the end face of the punch rod 1. Among them, the output shaft of the servo motor 27 is fixed with a transmission shaft 28 through a coupling, and the other end of the transmission shaft 28 is connected to the end face of the disc 26 close to the servo motor 27;

[0030] Specifically, movable rods 22 are fixed on the side walls of the arc-edge expansion plates 21 close to each other, and six arc-shaped through grooves 25 arranged in a circular array are formed in the interior of the disc 26. Among them, the movable rods 22 are arranged to move in an arc in the interior of the arc-shaped through grooves 25.

[0031] Preferably, the outer surfaces of the arc-edge expansion plates 21 are all provided with slopes, and the slope of the outer surface of the arc-edge expansion plates 21 near the punch pin 3 is higher than the end near the punch rod 1, which is used to flange the edge of the hole after the punch pin 3 is pulled out of the hole in the pipeline; and wear-resistant coatings are electroplated on the outer ring surfaces of the arc-edge expansion plates 21 to reduce the friction between the outer ring surfaces of the arc-edge expansion plates 21 and the edges of the holes on the shunt pipeline.

[0032] More specifically, support plates 23 are fixed on the surfaces of the arc-edge expansion plates 21 close to each other, connecting rods 24 are fixed on the sides of the support plates 23 close to each other, and the ends of the connecting rods 24 away from the support plates 23 are connected to the ends of the movable rods 22 outside the arc-shaped through grooves 25.

[0033] Specifically, limiting blocks for preventing deviation from the path of the arc-shaped through groove 25 are fixed at both ends of the movable rod 22, and the movable rod 22 is located at the lowest position of the arc-shaped through groove 25 when the arc-edge expansion plates 21 are closed to each other. The ends of the arc-edge expansion plates 21 away from the punching needle 3 are annularly and arrayedly fixed on the end surface of the punch rod 1, and the other ends of the arc-edge expansion plates 21 naturally expand with the axis of the punch rod 1 as the base point.

[0034] Specifically, both the power access end and the control end of the servo motor 27 are connected to an external controller and a power source through wire harnesses passing through the punch rod 1. A high-strength round rod 4 is fixed on the end surface of the punching needle 3 close to the punch rod 1, and the end of the high-strength round rod 4 away from the punching needle 3 is inserted into the adjustable flanging mechanism 2 and rotatably connected to the left side wall of the disc 26.

[0035] According to the above-mentioned preferred technical solution, the working process of this technical solution is described as follows:

[0036] After the mold on the punching and flanging machine clamps the radiator shunt copper tube to be punched, using the principle of ultrasonic metal welding, high-frequency electrical energy is converted into mechanical vibration by the transducer device and acts on the copper tube, and then pressure is applied. When a large enough current passes through, a large amount of resistance heat is generated at the contact of the plates, and the metal in the hottest central area is quickly heated to a highly plastic or molten state, and a circular hollow will appear in the middle to facilitate punching.

[0037] Subsequently, the mold drives the punch rod 1 to drill into the interior of the copper tube. When the punching needle 3 drills into the interior of the copper tube and the adjustable flanging mechanism 2 also enters the interior of the copper tube and the punching operation is completed, when the punch rod 1 drives the punching needle 3 to return, the servo motor 27 drives the disc 26 to rotate by an appropriate angle through the transmission shaft 28, so that the movable rod 22 at the lowest position of the arc-shaped through groove 25 rises above the lowest position of the arc-shaped through groove 25, and the originally closed arc-edge expansion plates 21 are pushed and expanded outward by the movable rod 22 and the connecting rod 24. Then, during the process of pulling out the punching needle 3, the edge of the hole is flanged by means of the slope and expansion posture of the arc-edge expansion plates 21.

[0038] It should be noted that the above specific implementation manners are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the description and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A punching and flanging device for a shunt pipeline, characterized in that, Including: A punch rod (1) installed in a stamping die of a punching and flanging machine, an adjustable flanging mechanism (2) connected to the end of the punch rod (1), and a punch pin (3) fixed to one end of the adjustable flanging mechanism (2) away from the punch rod (1); The adjustable flanging mechanism (2) includes six arc-edge expansion plates (21) arranged in a circular array, a disc (26) located between the arc-edge expansion plates (21), and a servo motor (27) fixed to the end face of the punch rod (1); wherein, the output shaft of the servo motor (27) is fixed with a transmission shaft (28) through a coupling, and the other end of the transmission shaft (28) is connected to the end face of the disc (26) close to the servo motor (27); Moving rods (22) are fixed to the side walls of the arc-edge expansion plates (21) close to each other, and six arc-shaped through grooves (25) arranged in a circular array are formed in the interior of the disc (26), wherein the moving rods (22) are arranged to move in an arc in the interior of the arc-shaped through grooves (25).

2. The flushing and flanging device for the flow splitting pipeline according to claim 1, wherein, The outer surfaces of the arc-edge expansion plates (21) are all provided with slopes, and the slope of the outer surface of the arc-edge expansion plate (21) is higher at the end close to the punch pin (3) than at the end close to the punch rod (1), for flanging the edge of the hole after the punch pin (3) pulls out the hole in the pipeline.

3. The flushing and flanging device for the shunt pipeline according to claim 1, characterized in that Support plates (23) are fixed to the surfaces of the arc-edge expansion plates (21) close to each other, connecting rods (24) are fixed to the sides of the support plates (23) close to each other, and one end of the connecting rod (24) away from the support plate (23) is connected to the end of the moving rod (22) outside the arc-shaped through groove (25).

4. The punching and flanging device for the flow splitting pipeline according to claim 1, wherein, Limit blocks for preventing deviation from the path of the arc-shaped through groove (25) are fixed to both ends of the moving rod (22), and the moving rod (22) is located at the lowest position of the arc-shaped through groove (25) when the arc-edge expansion plates (21) are closed to each other.

5. The punching and flanging device for the shunt pipeline according to claim 1, wherein The ends of the arc-edge expansion plates (21) away from the punch pin (3) are annularly and arrayedly fixed to the end face of the punch rod (1), and the other ends of the arc-edge expansion plates (21) naturally expand with the axis of the punch rod (1) as the base point.

6. The punching and flanging device for the flow-dividing pipeline according to claim 1, characterized in that Both the power access end and the control end of the servo motor (27) are connected to an external controller and a power source through a wire harness passing through the punch rod (1).

7. The punching and flanging device for the shunt pipeline according to claim 1, wherein, A high-strength round rod (4) is fixed to the end face of the punch pin (3) close to the punch rod (1), and one end of the high-strength round rod (4) away from the punch pin (3) is inserted into the adjustable flanging mechanism (2) and rotatably connected to the left side wall of the disc (26).

8. The flushing and punching device for the shunt pipeline according to claim 1, wherein, Wear-resistant coatings are electroplated on the outer circumferential surfaces of the arc-edge expansion plates (21) to reduce the friction between the outer circumferential surfaces of the arc-edge expansion plates (21) and the edges of the holes on the shunt pipelines.

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