Precise punching device for steel round pipe

Abstract

The precise punching device for the steel round pipe comprises a core rod fixing seat, a power source fixing seat is fixedly arranged on one side of the core rod fixing seat, a main fixing core rod is fixedly installed in the core rod fixing seat, a main moving core rod is movably arranged in the core rod fixing seat in a penetrating mode, and the main moving core rod is located below the main fixing core rod. A core rod driving power source is installed on the power source fixing base and connected with a main moving core rod, the main fixed core rod is sequentially connected with a plurality of extending fixed core rods through core rod connecting blocks, the main moving core rod is sequentially connected with extending moving core rods through core rod connecting blocks, and punching female dies are arranged on the main fixed core rod and the extending fixed core rods. A lifting supporting assembly is correspondingly arranged below each punching groove. The device can compensate the diameter, the wall thickness and the radian fluctuation value of the round pipe, and reduces the deformation of round pipe punching; multi-hole-site simultaneous punching can be achieved, the number of devices is reduced, the automation speed is increased, and the personnel and device maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of punching processing equipment, and in particular to a precision punching device for steel round pipes. BACKGROUND

[0002] The existing steel pipe precision punching device has a fixed structure of the inner die and the outer support, and cannot compensate the fluctuation value of the diameter, wall thickness and arc of each round pipe. When the punch punches, the die and the round pipe cannot be attached, and the round pipe is severely deformed after punching. In order to realize multi-hole punching, multiple devices are usually needed for simultaneous production, the production efficiency is low, and the personnel and equipment maintenance costs are high. SUMMARY

[0003] The present application aims to solve the problems of the prior art and provides a precision punching device for steel round pipes.

[0004] To achieve the above-mentioned purpose, the following technical solutions are adopted:

[0005] A precision punching device for steel round pipes comprises a core rod fixing seat, a power source fixing seat is fixed on one side of the core rod fixing seat, a main fixed core rod is fixedly installed in the core rod fixing seat, a main moving core rod is movably arranged in the core rod fixing seat, the main moving core rod is located below the main fixed core rod, a core rod driving power source is installed on the power source fixing seat, the core rod driving power source is connected with the main moving core rod, the main fixed core rod is connected with a plurality of extension fixed core rods through core rod connecting blocks in sequence, the main moving core rod is connected with extension moving core rods through core rod connecting blocks in sequence, the main fixed core rod and the extension fixed core rod are both provided with a punching die, and one lifting support assembly is arranged below each punching die.

[0006] The lifting support assembly comprises a bottom plate, a driving block is arranged on the upper surface of the bottom plate, a moving power source is connected with the driving block, the upper surface of the driving block is an inclined slope structure, the high end of the inclined slope is close to the moving power source, four guide sleeves are arranged on the upper surface of the moving power source, guide columns are arranged on the guide sleeves, support blocks are movably arranged on the four guide columns, the support blocks are located below the punching die, the support blocks are provided with through grooves, and the driving block is movably arranged in the through grooves.

[0007] A limiting pressing plate is fixed on the end of the upper surface of the bottom plate close to the moving power source, and the driving block is movably arranged in the limiting pressing plate.

[0008] A self-lubricating sliding plate is arranged on the bottom plate, and the driving block is movably arranged on the self-lubricating sliding plate.

[0009] T-shaped guide blocks are movably arranged on the inner wall of the main moving core rod and the extension moving core rod close to the middle position of the port through a fixed pressing plate, guide sliding grooves are arranged on the inner wall of the main fixed core rod and the extension fixed core rod, and the guide sliding grooves are movably arranged in the T-shaped guide blocks.

[0010] The core rod connecting block comprises a middle connecting block, T-shaped connecting blocks are arranged at both ends of the middle connecting block, and the connecting ends of the main fixed core rod, the main movable core rod, the extended fixed core rod and the extended movable core rod are all provided with matching installation grooves corresponding to the middle connecting block and the T-shaped connecting blocks.

[0011] The beneficial effects of the present application are: the present application realizes relative movement and self-locking of the split core rod, ensures that the punching groove is supported in the inner cavity of the circular pipe, cooperates with the external lifting support assembly, adapts to punching at different positions of the circular pipe, and can realize compensation for the diameter, wall thickness and fluctuation value of the circular pipe, thereby reducing the deformation of the circular pipe during punching; the present application can realize simultaneous punching at multiple hole positions, reduces the number of equipment, improves the automation speed, and reduces the personnel and equipment maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic diagram of the present application;

[0013] Fig. 2 It is a structural schematic diagram of the present application after omitting the support block and the limiting pressing plate;

[0014] In the figure: 1-core rod fixing seat; 2-power source fixing seat; 3-main fixed core rod; 4-main movable core rod; 5-core rod driving power source; 6-core rod connecting block; 7-extended fixed core rod; 8-extended movable core rod; 9-punching groove; 10-lifting support assembly; 11-fixed pressing plate; 12-T-shaped guide block; 13-Y-shaped rod with pin connection;

[0015] 1001-bottom plate; 1002-driving block; 1003-moving power source; 1004-guide sleeve; 1005-guide column; 1006-support block; 1007-limiting pressing plate; 1008-self-lubricating sliding plate; 1009-vertical plate; 1010-cylinder joint;

[0016] 601-middle connecting block; 602-T-shaped connecting block;

[0017] The present application will be described in detail below with reference to the embodiments of the present application and the accompanying drawings. DETAILED DESCRIPTION

[0018] The principles and features of the present application will be described below in combination with the accompanying drawings, and the embodiments are only used to explain the present application and are not used to limit the scope of the present application. In the following paragraphs, the present application will be described in more detail with reference to the accompanying drawings. The advantages and features of the present application will be clearer according to the following description. It should be noted that the accompanying drawings are very simplified and use non-precise proportions, only for the purpose of facilitating and clearly assisting the description of the embodiments of the present application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] A precision punching device for steel round tubes, such as Figs. 1-2 As shown, it includes a mandrel fixing seat 1, a power source fixing seat 2, a main fixed mandrel 3, a main moving mandrel 4, a mandrel driving power source 5, a mandrel connecting block 6, an extension fixed mandrel 7, an extension moving mandrel 8, a punched groove 9, a lifting support assembly 10, a fixing pressure plate 11, a T-shaped guide block 12, and a Y-shaped pin connecting rod 13.

[0022] A power source mounting base 2 is fixed on one side of the mandrel mounting base 1. The power source mounting base 2 has an L-shaped structure and a mandrel drive power source 5 is installed on the power source mounting base 2.

[0023] The main fixed mandrel 3 is fixedly installed in the mandrel fixing seat 1, and the main moving mandrel 4 is movably inserted in the mandrel fixing seat 1. The main moving mandrel 4 is located below the main fixed mandrel 3, and the mandrel driving power source 5 is connected to the main moving mandrel 4.

[0024] The mandrel drive power source 5 is a cylinder, and the piston rod of the mandrel drive power source 5 is connected to the main moving mandrel 4 through a Y-shaped pin connecting rod 13.

[0025] The main fixed mandrel 3 is connected in sequence to several extended fixed mandrels 7 via mandrel connecting blocks 6, and the main moving mandrel 4 is connected in sequence to extended moving mandrels 8 via mandrel connecting blocks 6. As shown in the figure, there are a total of three fixed mandrels and three moving mandrels, which can be set as needed.

[0026] The mandrel connecting block 6 includes an intermediate connecting block 601, with T-shaped connecting blocks 602 at both ends of the intermediate connecting block 601. The connecting ends of the main fixed mandrel 3, the main moving mandrel 4, the extended fixed mandrel 7, and the extended moving mandrel 8 are all provided with mating mounting grooves corresponding to the intermediate connecting block 601 and the T-shaped connecting block 602.

[0027] The main fixed mandrel 3 and the extended fixed mandrel 7 together form the stationary mandrel section.

[0028] The main moving mandrel 4 and the extended moving mandrel 8 together form the moving mandrel section, which is driven by the mandrel drive power source 5 to perform telescopic movement. Through telescopic movement, both the fixed mandrel section and the moving mandrel section are supported in the inner cavity of the circular tube, and self-locking is achieved through contact with the inner cavity of the circular tube.

[0029] The T-shaped guide block 12 is installed at the middle position of the inner wall of the main moving mandrel 4 and the extension moving mandrel 8 near the port through the fixed pressing plate 11, and the guide sliding groove is arranged at the middle position of the inner wall of the main fixed mandrel 3 and the extension fixed mandrel 7, and the guide sliding groove is matched and installed with the T-shaped guide block 12.

[0030] The T-shaped guide block 12 and the guide sliding groove are matched between the mandrels, so that the straightness and stability of the moving mandrel in the extension process are ensured.

[0031] The punching recess 9 is arranged on the main fixed mandrel 3 and the extension fixed mandrel 7, and the corresponding punching hole is arranged on the punching recess 9.

[0032] The lifting support assembly 10 is arranged below each punching recess 9.

[0033] The lifting support assembly 10 comprises a bottom plate 1001, a driving block 1002 is arranged on the upper surface of the bottom plate 1001, a moving power source 1003 is connected with the driving block 1002, the upper surface of the driving block 1002 is an inclined slope structure and the high end of the inclined slope is close to the moving power source 1003, four guide sleeves 1004 are arranged on the upper surface of the moving power source 1003, guide columns 1005 are arranged on the guide sleeves 1004, support blocks 1006 are arranged on the four guide columns 1005 in a penetrating manner, the support blocks 1006 are located below the punching recess 9, and a through slot is arranged on the bottom of the support block 1006 and the driving block 1002 is arranged in the through slot in a penetrating manner.

[0034] The moving power source 1003 pushes the driving block 1002 to move horizontally. When the driving block 1002 moves horizontally, the slope thereof is in contact with the inner wall of the through slot of the support block 1006, so that the horizontal pushing force is converted into the vertical lifting force of the support block 1006 to support the circular pipe.

[0035] The guide columns 1005 and the guide sleeves 1004 ensure that the support block moves vertically stably without yawing.

[0036] A limiting pressing plate 1007 is fixed to one end of the upper surface of the bottom plate 1001 close to the moving power source 1003, and the driving block 1002 is arranged in the limiting pressing plate 1007 in a penetrating manner.

[0037] A self-lubricating sliding plate 1008 is arranged on the upper surface of the bottom plate 1001 below the driving block 1002, and the driving block 1002 is arranged on the self-lubricating sliding plate 1008 in a sliding manner.

[0038] The self-lubricating sliding plate 1008 and the limiting pressing plate 1007 are designed to ensure smooth movement, reduce wear and tear and accurate limiting.

[0039] A vertical plate 1009 is arranged on one side of the bottom plate 1001, and the moving power source 1003 is arranged on the outer side of the vertical plate 1009.

[0040] The mobile power source 1003 is a cylinder, and the piston rod of the mobile power source 1003 is connected with the driving block 1002 through the cylinder joint 1010.

[0041] The working principle of the present application is as follows:

[0042] The main moving mandrel 4 and the extended moving mandrel 8 are connected into a whole through the mandrel connecting block 6 and are connected with the mandrel driving power source 5 through the Y-shaped pin joint lever 13, the moving mandrel part and the fixed mandrel part are guided by the T-shaped guide block 12, the mandrel driving power source 5 works to push the main moving mandrel 4 and the extended moving mandrel 8 to move until the fixed mandrel part and the moving mandrel part are supported in the inner cavity of the circular pipe, and the mandrel realizes self-locking through the contact surface.

[0043] The support block 1006 is installed with the guide column 1005, the driving block 1002 is connected with the mobile power source 1003 through the cylinder joint 1010, the mobile power source 1003 works to drive the support block 1006 to move up and down through the driving block 1002 until the support block 1006 is supported outside the circular pipe.

[0044] The present application realizes relative movement and self-locking of the split mandrel, ensures that the punching groove 9 is supported in the inner cavity of the circular pipe, cooperates with the external lifting support assembly 10, punches at different positions of the circular pipe, and can realize compensation for the diameter, wall thickness and arc fluctuation value of the circular pipe, and reduces the deformation of the circular pipe punching.

[0045] The present application can realize simultaneous punching of multiple hole positions, reduces the number of equipment, improves the automation speed, and reduces the personnel and equipment maintenance cost.

[0046] The present application has been described above in conjunction with the drawings, and it is obvious that the specific implementation of the present application is not limited by the above manner, and various improvements using the method concept and technical solution of the present application or direct application to other occasions without improvement are within the protection scope of the present application.

Claims

1. A precision piercing device for a steel round pipe, characterized by, The utility model provides a kind of core rod fixing seat, one side of core rod fixing seat (1) is fixed with power source fixing seat (2), main fixed core rod (3) is fixedly installed in core rod fixing seat (1), main movement core rod (4) is movably provided in core rod fixing seat (1), main movement core rod (4) is below main fixed core rod (3), core rod driving power source (5) is installed on power source fixing seat (2), and core rod driving power source (5) is connected with main movement core rod (4), and main fixed core rod (3) is sequentially connected with several extension fixed core rods (7) by core rod connecting block (6), and main movement core rod (4) is sequentially connected with extension movement core rod (8) by core rod connecting block (6), and punch female die (9) is provided on main fixed core rod (3), extension fixed core rod (7), and each punch female die (9) is correspondingly provided with one lifting support assembly (10) below.

2. The precision piercing device for a steel pipe according to claim 1, wherein Lifting support assembly (10) includes bottom plate (1001), driving block (1002) is arranged on the upper surface of bottom plate (1001), moving power source (1003) is connected with driving block (1002), the upper surface of driving block (1002) is inclined inclined plane structure and the high end of inclined inclined plane is close to moving power source (1003), four guide sleeves (1004) are arranged on the upper surface of moving power source (1003), guide column (1005) is arranged on guide sleeve (1004), support block (1006) is installed on the four guide columns (1005), and support block (1006) is below punch female die (9), and the bottom of support block (1006) is provided with through slot, and driving block (1002) is installed in through slot.

3. The precision piercing device for a steel pipe according to claim 2, wherein The end of the upper surface of bottom plate (1001) close to moving power source (1003) is fixedly provided with limit pressing plate (1007), and driving block (1002) is installed in limit pressing plate (1007).

4. The precision piercing device for a steel pipe according to claim 3, wherein Self-lubricating slide plate (1008) is installed on the upper surface of bottom plate (1001) below driving block (1002), and driving block (1002) is slidably arranged on self-lubricating slide plate (1008).

5. The precision piercing device for a steel pipe according to claim 4, wherein The side of bottom plate (1001) is provided with vertical plate (1009), and moving power source (1003) is installed on the outer side of vertical plate (1009).

6. The precision piercing device for a steel pipe according to claim 5, wherein Moving power source (1003) is air cylinder, and the piston rod of moving power source (1003) is connected with driving block (1002) through air cylinder joint (1010).

7. The precision piercing device for a steel pipe according to claim 1, wherein T-shaped guide block (12) is installed in the middle position of the inner wall of main movement core rod (4) and extension movement core rod (8) close to port through fixed pressing plate (11), and guide sliding groove is arranged in the middle position of the inner wall of main fixed core rod (3) and extension fixed core rod (7), and guide sliding groove is matched with T-shaped guide block (12) and is installed.

8. The precision piercing device for a steel pipe according to claim 1, wherein Core rod connecting block (6) includes middle connecting block (601), and T-shaped connecting block (602) is arranged at the two ends of middle connecting block (601), and the connecting end of main fixed core rod (3), main movement core rod (4), extension fixed core rod (7) and extension movement core rod (8) is provided with matched installation groove corresponding to middle connecting block (601) and T-shaped connecting block (602).

9. The precision piercing device for a steel pipe according to claim 1, wherein Power source fixing seat (2) is L-shaped structure.

10. The precision piercing device for a steel pipe according to claim 9, wherein The core rod driving power source (5) is a cylinder, and the piston rod of the core rod driving power source (5) is connected with the main movement core rod (4) through a Y-shaped belt pin connecting rod (13).

Images