Punching die for small-pipe-diameter high-frequency welding aluminum pipe

Abstract

The utility model discloses a small-pipe-diameter high-frequency welding aluminum pipe punching die which comprises a lower die device, the lower die device comprises a lower die base and a lower die plate arranged on the lower die base, the lower die plate is provided with a first semicircular cambered surface and a second semicircular cambered surface which are used for installing a high-frequency welding aluminum pipe, and an upper die device comprises an upper die base, an upper padding plate, an upper clamping plate and an upper stripping plate which are installed in sequence. The upper stripping plate is provided with a discharging bolt hung on the upper clamping plate, a pressing spring is further arranged between the upper stripping plate and the upper clamping plate, a first receding groove is formed in the position, located on the first arc face, of the upper stripping plate, a first through hole is formed in the first receding groove, a second receding groove is formed in the position, located on the second arc face, of the upper stripping plate, and a second through hole, a punching assembly and a shaping assembly are arranged in the second receding groove. The punching assembly comprises a punching punch and a first round rod, the first round rod is installed on the upper clamping plate through a first through hole, a middle blade and an edge blade are arranged at the end of the punching punch, the shaping assembly comprises a shaping punch and a second round rod, the second round rod is installed on the upper clamping plate through a second through hole, and the end of the shaping punch is oval.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware stamping dies, in particular to a punching die for small-diameter high-frequency welded aluminum pipes. Background Art

[0002] In industrial production, a hardware stamping die is a special tool installed on a press. By applying pressure, metal materials are processed into parts or products with the required shapes. Such special tools are collectively referred to as hardware stamping dies.

[0003] According to the design concept of traditional punching dies, punching requires the simultaneous participation of a punch and a die. However, some small-diameter high-frequency welded aluminum pipes have the characteristics of small inner diameter and long length, which will inevitably result in extremely poor strength of the punching die. The die manufactured according to this concept does not have mass production capacity. Thus, it is very difficult to punch holes in such small-diameter high-frequency welded aluminum pipes.

[0004] In view of this, a punching die for small-diameter high-frequency welded aluminum pipes is proposed from a practical perspective. Content of the Utility Model

[0005] The purpose of the utility model is to provide a punching die for small-diameter high-frequency welded aluminum pipes to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A punching die for small-diameter high-frequency welded aluminum pipes, characterized by comprising:

[0008] A lower die device, including a lower die base and a lower template arranged on the lower die base. The lower template is provided with a first semi-circular arc surface and a second semi-circular arc surface for installing high-frequency welded aluminum pipes.

[0009] An upper die device, including an upper die base, an upper backing plate, an upper clamping plate, and an upper stripper plate installed in sequence. The upper stripper plate is provided with a stripping bolt and is hung on the upper clamping plate. A pressure spring is further arranged between the upper stripper plate and the upper clamping plate. The upper stripper plate is provided with a first clearance groove on the first semi-circular arc surface, and a first through hole is arranged on the first clearance groove. The upper stripper plate is provided with a second clearance groove on the second semi-circular arc surface, and a second through hole is arranged on the second clearance groove.

[0010] A punching component and a shaping component. The punching component includes a punching punch and a first round rod. The first round rod is installed on the upper clamping plate through the first through hole. The end of the punching punch is provided with a middle edge and a side edge. The shaping component includes a shaping punch and a second round rod. The second round rod is installed on the upper clamping plate through the second through hole. The end of the shaping punch is elliptical.

[0011] Advantages of the present utility model: A lower template for positioning the product is provided inside the lower die device, and an upper stripper plate for pressing, unloading, and guiding the product is provided inside the lower die device. The punching punch of the punching assembly adopts the design of a middle edge and a side edge, and easily cuts off the waste material by means of a small stress area to complete the punching operation of the product. In order to maintain the precision of the product, a sizing assembly is added to make the product more precise.

[0012] Preferably, the lower die device further includes a lower bottom plate disposed on the ground and lower pad feet connecting the lower die base and the lower bottom plate.

[0013] Preferably, limit blocks and positioning pins are provided at both ends of the first semi-circular arc surface and both ends of the second semi-circular arc surface to position the high-frequency welded aluminum tube.

[0014] Preferably, an outer guide bushing is installed on the upper die base, and an outer guide post matched with the outer guide bushing is installed on the lower die base.

[0015] Preferably, a plurality of punching assemblies and a plurality of sizing assemblies are provided. The plurality of punching assemblies are uniformly arranged along the first semi-circular arc surface, and the plurality of sizing assemblies are uniformly arranged along the second semi-circular arc surface. Description of the Drawings

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is a schematic diagram of the punching punch of the punching assembly of the present utility model;

[0018] Figure 3 is a schematic diagram of the sizing punch of the sizing assembly of the present utility model;

[0019] Reference numerals: 101, upper die base; 102, upper backing plate; 103, upper clamping plate; 104, upper stripper plate; 105, lower template; 106, lower die base; 107, lower pad feet; 108, lower bottom plate; 109, outer guide post; 110, pressure spring; 111, unloading bolt; 112, punching assembly; 113, sizing assembly; 114, first semi-circular arc surface; 115, second semi-circular arc surface; 116, middle edge; 117, side edge. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the 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, it should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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.

[0023] Please refer to Figures 1 - 3 , Figures 1 - 3 which schematically shows a punching die for small-diameter high-frequency welded aluminum pipes according to the present utility model.

[0024] In the embodiment of the present utility model, the punching die for small-diameter high-frequency welded aluminum pipes includes:

[0025] A lower die device, including a lower die base 106 and a lower template 105 arranged on the lower die base 106. The lower template 105 is provided with a first semi-circular arc surface 114 and a second semi-circular arc surface 115 for installing high-frequency welded aluminum pipes.

[0026] An upper die device, including an upper die base 101, an upper backing plate 102, an upper clamping plate 103, and an upper stripper plate 104 installed in sequence. The upper stripper plate 104 is hung on the upper clamping plate 103 by a stripping bolt 111. A pressure spring 110 is further arranged between the upper stripper plate 104 and the upper clamping plate 103. The upper stripper plate 104 is located on the first semi-circular arc surface 114 and is provided with a first clearance groove, and a first through hole is arranged on the first clearance groove. The upper stripper plate 104 is located on the second semi-circular arc surface 115 and is provided with a second clearance groove, and a second through hole is arranged on the second clearance groove.

[0027] A punching component and a shaping component. The punching component 112 includes a punching punch and a first round rod. The first round rod is installed on the upper clamping plate 103 through the first through hole. The end of the punching punch is provided with a middle edge and a side edge. The shaping component 113 includes a shaping punch and a second round rod. The second round rod is installed on the upper clamping plate 103 through the second through hole. The end of the shaping punch is elliptical.

[0028] In the lower die device of the present utility model, a lower template 105 for positioning the product is provided. An upper stripper plate 104 for pressing, unloading, and guiding the product is provided in the lower die device. The punching punch of the punching component 112 adopts the design of a middle edge and a side edge, and easily cuts off the waste material by means of a small stress area, completing the punching operation of the product. In order to maintain the accuracy of the product, a sizing component 113 is added to make the product more accurate.

[0029] Among them, the pressure spring 110 not only presses the product by its own elastic force, but also disengages the punching punch and the sizing punch from the product.

[0030] Among them, the end of the punching punch is provided with a middle edge and a side edge. The middle edge part is very sharp, and the punching operation of the product is carried out by using the principle of small stress area and large pressure.

[0031] Furthermore, the lower die device further includes a lower bottom plate 108 arranged on the ground, and a lower pad foot 107 connecting the lower die base 106 and the lower bottom plate 108.

[0032] Furthermore, limit blocks and positioning pins are provided at both ends of the first semi-circular arc surface 114 and both ends of the second semi-circular arc surface 115 to position the high-frequency welded aluminum tube.

[0033] Among them, the limit blocks and positioning pins provided at both ends not only position the high-frequency welded aluminum tube, but also ensure the stability of the high-frequency welded aluminum tube, preventing the punching position from shifting due to the shaking of the high-frequency welded aluminum tube.

[0034] Furthermore, an outer guide sleeve is installed on the upper die base 101, and an outer guide post 109 cooperating with the outer guide sleeve is installed on the lower die base 106.

[0035] Among them, the upper die device and the lower die device are accurately positioned and guided by the outer guide post 109.

[0036] Furthermore, a plurality of punching components 112 and sizing components 113 are provided. The plurality of punching components 112 are uniformly arranged along the first semi-circular arc surface 114, and the plurality of sizing components 113 are uniformly arranged along the second semi-circular arc surface 115.

[0037] Among them, by providing a plurality of punching components 112 and sizing components 113, the high-frequency welded aluminum tube can be efficiently punched and sized, improving the overall working efficiency.

[0038] The working principle of the present utility model:

[0039] In the initial stage of stamping, the upper die device moves downward until the upper stripper plate 104 contacts and presses the product to be punched. At this time, the blank holding spring 110 is gradually compressed. Then, the punching punch and the sizing punch start to contact the product and process the product until the upper die device is completely closed, and the processing of the product is completed. Subsequently, the upper die device starts to move upward. Under the pressure of the blank holding spring 110, the upper stripper plate 104 still remains in close contact with the product, and other parts of the upper die device follow the upper die device to move upward. In this way, the punching punch and the sizing punch gradually disengage from the product. As the upper die device continues to move upward, the upper stripper plate 104 starts to disengage from the product, and then the entire upper die device moves upward to the top dead center of the punching press.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small diameter high frequency welded aluminum tube punching die, characterized in that: include: A lower die device comprises a lower die base and a lower die plate arranged on the lower die base, wherein the lower die plate is provided with a first semicircular arc surface and a second semicircular arc surface for mounting a high-frequency welded aluminum tube; The upper die device comprises an upper die seat, an upper pad, an upper clamping plate and an upper stripping plate which are sequentially installed, the upper stripping plate is provided with a discharge bolt which is hung on the upper clamping plate, a pressing spring is further provided between the upper stripping plate and the upper clamping plate, the upper stripping plate is provided with a first air avoidance groove on the first semicircular arc surface, the first air avoidance groove is provided with a first through hole, the upper stripping plate is provided with a second air avoidance groove on the second semicircular arc surface, and the second air avoidance groove is provided with a second through hole; A punching assembly and a shaping assembly, wherein the punching assembly includes a punching punch and a first round rod, wherein the first round rod is mounted on the upper clamping plate via a first through hole, and a middle blade and a side blade are provided at the end of the punching punch, and the shaping assembly includes a shaping punch and a second round rod, wherein the second round rod is mounted on the upper clamping plate via a second through hole, and the end of the shaping punch is elliptical.

2. A small diameter high frequency welded aluminum tube punching die according to claim 1, characterized in that: The lower mold device also includes a lower base plate arranged on the ground and lower pads connecting the lower mold base and the lower base plate.

3. A small diameter high frequency welded aluminum tube punching die according to claim 1, characterized in that: Limit blocks and positioning pins are provided at both ends of the first semicircular arc surface and both ends of the second semicircular arc surface to position the high-frequency welded aluminum tube.

4. A small diameter high frequency welded aluminum tube punching die according to claim 1, characterized in that: An outer guide sleeve is installed on the upper die seat, and an outer guide column matched with the outer guide sleeve is installed on the lower die seat.

5. The small diameter high frequency welding aluminum tube punching die according to claim 1, characterized in that: The punching components and the shaping components are both provided in plurality, and the plurality of punching components are evenly arranged along the first semicircular arc surface, and the plurality of shaping components are evenly arranged along the second semicircular arc surface.

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