Asymmetric punching tool for pipes

Abstract

The utility model provides a tubular product asymmetrical punching tool, relates to tubular product punching technical field, including cutter, punching drive subassembly, core rod, core rod fixing subassembly and material removal needle, be provided with the clearance on the core rod, the material removal needle is provided on the return path of cutter after punching, the cutter is hollow setting, and the material removal needle diameter is less than cutter inner bore diameter. Due to the fact that the receding space is formed in the core rod, the cutter does not make direct contact with the core rod when punching is conducted, the abrasion speed of the cutter and the core rod is reduced, the punching quality is guaranteed, the burr problem is avoided, waste in the cutter is removed through the material removing needle in the returning process after punching is conducted on the cutter, the waste removing efficiency is high, and the cost is low. Smooth proceeding of subsequent punching work is guaranteed; by arranging the positioning structure and the matching structure, rotation and axial positioning of the core rod and adjustment of the distance between the hole and the head end can be rapidly completed, hole forming of different angles and different distances is achieved, and the punching efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe punching technology field especially a pipe asymmetric punching frock. BACKGROUND

[0002] Medical catheter and other soft material pipe need to punch, the hole is generally along the axis array multiple rows, and asymmetric, in the processing process, because the pipe is soft material, the punching position of the pipe will produce deformation when the cutter punches, the cutter needs to penetrate the thin wall of the pipe, and the hole on the pipe can be formed.

[0003] At present, the pipe asymmetric punching generally adopts the mode that the pipe penetrates into the mandrel, the cutter and the mandrel are directly contacted to penetrate the pipe wall and obtain the required hole, the processing mode has the following shortcomings: 1) in the pipe asymmetric punching process, the cutter and the mandrel are directly contacted, the cutter is abraded fast, the cutting edge is easy to break, the mandrel is also abraded fast, and uneven shape is formed on the surface, which not only affects the penetration of the mandrel into the pipe, but also causes the incomplete contact of the cutter and the mandrel, resulting in the burr of the punching, 2) after punching, the cutter has residual waste, which needs to be removed by manual operation in time, and the work is time-consuming and laborious, otherwise the burr is easy to be generated, and the processing effect is affected, 3) when the pipe has multiple places needing to be punched in the axial and circumferential directions, the traditional manual measurement is generally used to rotate and move the pipe, and the punching position accuracy is not high, the present application is proposed in view of the above defects. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a pipe asymmetric punching frock, solve the cutter, mandrel abrasion fast and the problem that the residual waste in cutter after punching causes the influence punching effect in the pipe punching process of present stage.

[0005] In order to solve the above problems, the utility model provides a pipe asymmetric punching frock, including cutter, punch driving assembly, mandrel, mandrel fixing assembly and material removal needle, the punch driving assembly is connected with cutter, the punch driving assembly is used for driving cutter displacement and carries out punch action, wherein punch driving assembly can select telescopic drive, linear displacement drive and the like, the mandrel is the stick body matched with the shape of pipe inner chamber, generally is round stick, be provided with the avoidance on the mandrel, and the avoidance position is matched with the required processing hole position on the pipe, and the shape is generally round hole, the avoidance is used to accommodate cutter when punching, avoids the collision of cutter and mandrel when punching, reduces cutter abrasion speed, be provided with the station for placing mandrel on the mandrel fixing assembly, is used for supporting and fixed mandrel, guarantees the stability in the punching process, the material removal needle is arranged on the retreat path after cutter punching, and the cutter is hollow, and the diameter of material removal needle is less than the inner hole diameter of cutter, when the cutter retreats after punching, the material removal needle moves in the cutter, and the pipe waste in the cutter is ejected.

[0006] According to an embodiment of the utility model, the core rod is provided with a plurality of voids in the axial and / or circumferential direction, corresponding to a plurality of hole positions required to be processed on the pipe.

[0007] According to an embodiment of the utility model, the core rod is provided with a positioning structure, and the core rod fixing assembly is provided with a cooperating structure matched with the positioning structure.

[0008] Optionally, the positioning structure and the cooperating structure can be any structure capable of achieving connection, for example, the positioning structure comprises a plurality of magnets, the cooperating structure is an iron sheet, and the position is quickly positioned through magnetic attraction connection. The positioning structure can also be provided as a plurality of buckles, and the cooperating structure is provided as a buckle mounting portion, so that the positioning connection is achieved through buckle clamping or clamping cooperation.

[0009] Preferably, the positioning structure comprises a plurality of grooves, and the cooperating structure comprises a clamping portion capable of being embedded in the grooves. The grooves can be distributed in the axial or circumferential direction.

[0010] According to an embodiment of the utility model, one end of the core rod is connected with a handle, and the positioning structure is arranged on the handle. The core rod and the handle jointly constitute a core rod assembly.

[0011] According to an embodiment of the utility model, the pipe asymmetric punching tool further comprises a limiting structure, and the limiting structure is used for limiting the maximum displacement of the cutter during punching.

[0012] According to an embodiment of the utility model, the cutter is mounted on a cutter plate, and the cutter plate is connected with a guide column. Preferably, two groups of guide columns are arranged to play a moving guide role for the cutter plate.

[0013] Optionally, the limiting structure can be arranged on the guide column.

[0014] Preferably, the limiting structure comprises a limiting block arranged on the moving path of the cutter plate.

[0015] According to an embodiment of the utility model, the pipe asymmetric punching tool further comprises an elastic assembly capable of providing limiting for the reset process of the cutter after punching. Preferably, the elastic assembly is a spring sleeved on the guide column.

[0016] According to an embodiment of the utility model, the cutter is provided in a plurality of groups, and the number of the material removing needles is correspondingly arranged according to the number of the cutters.

[0017] The utility model discloses beneficial effect is, through being provided with the emptying on the core rod, the tool punches the hole, does not directly contact with the core rod, reduced the wear rate of tool and core rod, and guarantee punch quality, avoid appearing the problem of burr, in the returning process after tool punch, utilize the material removal needle to the waste material in tool and clear, and the waste material removal efficiency is high, and guarantee the smooth progress of subsequent punch work, through setting up the positioning structure and cooperation structure, can fastly complete the rotation of core rod, axial positioning and the distance adjustment of hole pitch head end, realize the hole forming of different angle and different distance, improve punch efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further illustrated below in connection with the drawings and examples.

[0019] Figure 1 It is asymmetric punch tooling whole structure schematic view for pipe material,

[0020] Figure 2 It is structure schematic view for core rod subassembly and core rod fixed block,

[0021] Figure 3 It is structure schematic view for core rod subassembly and core rod fixed block cooperation,

[0022] Figure 4 It is Figure 3 perspective view. DETAILED DESCRIPTION

[0023] The following description is only for disclosing the utility model to enable the person skilled in the art to carry out the utility model. The examples in the following description are only as examples, and the person skilled in the art can think of other obvious modifications. The basic principles of the utility model defined in the following description can be applied to other implementation, modification, improvement, equivalent and other schemes without departing from the spirit and scope of the utility model.

[0024] Example 1

[0025] A kind of asymmetric punch tooling for pipe material, such as Figure 1 , including tooling main body, tool 15, punch driving assembly 1, limiting structure 7, core rod 16, core rod fixed assembly and material removal needle 12.

[0026] Tooling main body includes vertical plate 6, bottom plate 10 and foot pad 19, vertical plate 6 sets two, is installed on bottom plate 10, foot pad 19 sets 4, is installed on bottom plate 10.

[0027] The punching driving assembly 1 is in transmission connection with the cutter 15, and the punching driving assembly 1 is used for driving the cutter 15 to displace to perform a punching action, wherein the punching driving assembly 1 can be selected from a telescopic driving, a linear displacement driving and the like, in the embodiment, the punching driving assembly 1 adopts a pneumatic cylinder, and is installed on the pneumatic cylinder fixing plate 2, and the pneumatic cylinder fixing plate 2 is connected with the vertical plate 6.

[0028] The cutter 15 is fixedly installed on the cutter plate 5 through the cutter pressing plate 14, the cutter plate 5 is connected with the pneumatic cylinder through the joint 3, the cutter plate 5 is connected with the guide column 13 in a sliding fit mode, one end of the guide column 13 is connected with the pneumatic cylinder fixing plate 2, and the other end is connected with the fixed block one 8, and the guide column 13 is preferably provided with two groups, and plays a role of guiding the movement of the cutter plate 5.

[0029] The cutter 15 is provided with a plurality of groups, such as three groups, and can punch three holes in the axial direction at one time.

[0030] The limiting structure 7 is used for limiting the maximum displacement of the cutter 15 during punching, and the limiting structure 7 comprises a limiting block, the limiting block is installed on the fixed block one 8, and is used for limiting the maximum position of the displacement of the cutter plate 5.

[0031] The guide column 13 is provided with the elastic assembly 4, the elastic assembly 4 can provide a limit for the reset of the cutter 15 after punching, the elastic assembly 4 is preferably a spring, and is sleeved on the guide column 13, and can limit the cutter plate 5 during the reset displacement process.

[0032] One end of the core rod 16 is connected with the handle 18, and the core rod 16 and the handle 18 jointly form a core rod assembly.

[0033] The core rod 16 is a rod body matched with the shape of the inner cavity of the pipe, and is generally a round rod, the core rod 16 is provided with the empty space 16-1, the empty space 16-1 can be provided with a plurality of groups in the axial and / or circumferential direction of the core rod 16, and corresponds to a plurality of hole positions required to be machined on the pipe, the specific number is determined according to the number of holes required to be machined on the pipe, the position of the empty space 16-1 is matched with the position of the hole required to be machined on the pipe, and the shape is generally a circular hole, and a through hole (such as Figure 4 ) of a variable-diameter form or a blind hole can be used, the empty space 16-1 is used for accommodating the cutter 15 during punching, so as to avoid the cutter 15 from colliding with the core rod 16 during punching, and reduce the wear speed of the cutter 15.

[0034] The positioning structure 18-1 is arranged on the handle 18, such as Figure 2 , Figure 3 The positioning structure 18-1 comprises a plurality of grooves, and the grooves can be provided with a plurality of groups in the axial or circumferential direction.

[0035] The core rod fixing assembly comprises a core rod fixing block 9, a fixing block one 8 and a fixing block two 17, and the core rod fixing block 9, the fixing block one 8 and the fixing block two 17 are all provided with groove bodies for cooperating with the core rod 16 and the handle 18, thereby supporting and fixing the core rod assembly, ensuring the stability during the punching process, and the cooperation structure 9-1 is arranged on the core rod fixing block 9, the cooperation structure 9-1 comprises a clamping part capable of being embedded into the groove, the groove at the corresponding position is matched with the clamping part, so that the punching position of the pipe is located at the lower side of the cutter 15, and the quick adjustment of the punching position is realized.

[0036] The core rod fixing assembly is preferably detachably connected, for example, fixed by bolts.

[0037] During the punching, the pipe is sleeved on the core rod, the cylinder is started, the cutter is used to punch, after the punching at one position is completed, the core rod assembly is rotated and moved, and the cooperation between the cooperation structure 9-1 and the positioning structure 18-1 is used to realize the quick adjustment of the punching position of the pipe.

[0038] When different angle and size holes need to be machined, the core rod fixing assembly and the core rod assembly can be replaced to realize the quick adjustment and adaptation.

[0039] For example, Figure 1 The material removing needle 12 is arranged on the cylinder fixing plate 2 through the material removing needle pressing plate 11, the number of the material removing needle 12 is corresponding to the number of the cutter 15, the material removing needle 12 is arranged on the back-off path after the punching of the cutter 15, the cutter 15 is hollow, the diameter of the material removing needle 12 is smaller than the inner hole diameter of the cutter 15, when the cutter 15 back-off after the punching is completed, the material removing needle 12 moves in the cutter 15, and the pipe waste in the cutter 15 is pushed out, preferably, when the cutter 15 back-off to the initial position, the front end of the material removing needle 12 extends from the punching end of the cutter 15.

[0040] It should be understood by those skilled in the art that the above description and the embodiments of the utility model shown in the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments, and the implementation of the utility model can be deformed and modified without departing from the principle.

Claims

1. A tube asymmetric piercing tooling, characterized by: The punch tooling includes a cutter (15), a punch driving assembly (1), a core rod (16), a core rod fixing assembly and a material removing needle (12), the punch driving assembly (1) is connected with the cutter (15), the punch driving assembly (1) is used for driving the cutter (15) to displace for punch action, the core rod (16) is provided with a clearance (16-1), the clearance (16-1) is used for accommodating the cutter (15) during punching, the core rod fixing assembly is provided with a station for placing the core rod (16), the material removing needle (12) is arranged on a retreat path after the cutter (15) punches, and the diameter of the material removing needle (12) is smaller than the inner hole diameter of the cutter (15).

2. The pipe non-symmetrical piercing tooling of claim 1, wherein: The core rod (16) is provided with a plurality of clearances (16-1) distributed in the axial and / or circumferential direction.

3. The tube asymmetric piercing tooling of claim 1 or 2, wherein: The core rod (16) is provided with a positioning structure (18-1), and the core rod fixing assembly is provided with a cooperating structure (9-1) matched with the positioning structure (18-1).

4. The tube asymmetric piercing tooling of claim 3, wherein: The positioning structure (18-1) includes a plurality of grooves, and the cooperating structure (9-1) includes a clamping portion capable of being embedded in the groove.

5. The tube asymmetric piercing tooling of claim 4, wherein: One end of the core rod (16) is connected with a handle (18), and the positioning structure (18-1) is arranged on the handle (18).

6. The tube asymmetric piercing tooling of claim 4 or 5, wherein: The pipe asymmetric punching tooling further includes a limiting structure (7) for limiting the maximum displacement of the cutter (15) during punching.

7. The pipe non-symmetrical piercing tool of claim 6, wherein: The cutter (15) is mounted on a cutter plate (5), and the cutter plate (5) is connected with a guide column (13).

8. The pipe non-symmetrical piercing tool of claim 7, wherein: The limiting structure (7) includes a limiting block arranged on the moving path of the cutter plate (5).

9. The pipe non-symmetrical piercing tool of claim 1, wherein: The pipe asymmetric punching tooling further includes an elastic assembly (4) for providing limiting for the reset process of the cutter (15) after punching.

10. The pipe non-symmetrical piercing tool of claim 1, wherein: The cutter (15) is arranged in a plurality of groups, and the number of the material removing needles (12) is correspondingly arranged with the number of the cutters (15).

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