Punching device for steel pipe machining

Abstract

The utility model relates to the technical field of steel pipe machining, in particular to a punching device for steel pipe machining, which comprises a supporting table and a shell fixedly welded at the upper end of the supporting table, a steel pipe limiting seat is fixedly mounted above the supporting table, a connecting rod is fixedly mounted on the steel pipe limiting seat, and the connecting rod and a pressing screw rod penetrate through three holes of a connecting beam. Wherein the two connecting rods are in a fixed state, a bottom plate is fixedly installed in the shell, a supporting rod is fixedly installed above the bottom plate, a punching screw-down platform is arranged in the shell, a connecting steel pipe is fixed below the punching screw-down platform, the supporting rod is connected with the connecting steel pipe in a matched mode, and an embedding sleeve is fixedly installed below the punching screw-down platform. A puncher is fixedly installed below the nesting sleeve, a hydraulic oil cylinder is fixedly installed at the upper end of the shell, and steel pipes of different models can be clamped; and meanwhile, the steel pipe can be positioned, repeated measurement and repeated marking are avoided, and the number of punches in a row and the interval of the punches are flexibly controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a punching device for steel pipe processing. Background Technique

[0002] A steel pipe is a metal material made of steel with a hollow cross-section and a length much greater than the outer diameter (or side length). The cross-section is usually circular, but can also be flat, square, or special-shaped, etc. Steel pipes can be divided into seamless pipes and welded pipes according to the production method; carbon steel pipes, alloy steel pipes, and composite steel pipes according to the material; and plain end pipes, threaded pipes (ordinary threaded pipes, end thickened threaded pipes) according to the pipe end shape (connection method), etc. Since steel pipes often need to be punched during use, there has emerged a punching device, that is, the punch is pushed by the driving force of a punching press, and then it punches the pipe to meet specific uses. In the prior art, since the price of a fully automatic punching machine is too high and the efficiency is not prominent, so far, there is still a large market demand for manual punching devices.

[0003] Most of the punching devices on the market at present need to select different punching dies according to the size of the steel pipe, and at the same time need to use guiding columns of different sizes to position steel pipes of different models, resulting in the need to replace the die together when punching steel pipes of different sizes, which is time-consuming and laborious. Moreover, when continuously punching long steel pipes, the number of punches in a row is not enough, and when performing the next operation, a measuring ruler and a marking pen are needed to mark the punching start position, which is relatively cumbersome and may cause large errors, affecting the quality of parts. Content of the Utility Model

[0004] The purpose of the utility model is to provide a punching device for steel pipe processing to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: It includes a support table and a housing fixedly welded to the upper end of the support table, and a steel pipe limiting seat is fixedly installed above the support table. A connecting rod is fixedly installed on the steel pipe limiting seat, and the connecting rod and the pressing screw rod are fixed by a connecting beam. A bottom plate is fixedly installed inside the housing, and a supporting rod is fixedly installed above the bottom plate. There is a punching pressing platform inside the housing. A connecting steel pipe is fixed below the punching pressing platform. The supporting rod cooperates with the connecting steel pipe, and a nest is fixedly installed below the punching pressing platform, and a punching device is fixedly installed below the nest. A hydraulic cylinder is fixedly installed at the upper end of the housing.

[0006] Preferably, the steel pipe limit seats are symmetrically arranged on the support platform. There are grooves inside the steel pipe limit seats. There are two connecting rods, and the two rods are symmetrically fixed on both sides of the groove by bolts. A clamping plate is arranged in the middle of the connecting rods. The two sides of the clamping plate are processed into curved surfaces and are tangent to the connecting rods. The pressing screw rod passes through the threaded hole opened in the middle of the connecting beam and is connected to the clamping plate. The two steel pipe clamping devices on both sides are arranged in the same way.

[0007] Preferably, the punching and pressing platform is tightly connected with the four connecting steel pipes by interference fit. One end of the supporting rod is fixedly connected to the bottom plate, and the other end is inserted into the connecting steel pipe with a clearance fit. A fastening steel pipe is fixedly connected above the pressing platform, and the fastening steel pipe is fixedly connected to the internal piston rod of the hydraulic cylinder through a side bolt connection.

[0008] Preferably, the surface of the pressing screw rod is designed with trapezoidal threads, and the connecting beam is designed with corresponding threaded holes at the connection position with the pressing screw rod. One end of the pressing screw rod is fixedly connected to the clamping plate, and a positioning plate is fixedly connected to the front of the clamping plate, and through holes are made on the positioning plate. Preferably, a nest is fixedly installed below the punching and pressing platform, and the nest is tightly connected with the punching device below by a mortise and tenon structure. The punching device is a detachable structure and can be divided into a punching head and a punch pin.

[0009] Preferably, the lower half of the clamping plate is a reverse V-shaped notch, and the positioning plate is located directly above the reverse V-shaped notch.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model provides a punching device for steel pipe processing. When the pressing screw rod is rotated through the handle, the pressing screw rod can drive the clamping plate to move up and down reciprocally, so as to control the size of the hole between the clamping plate and the steel pipe clamping groove body, thereby realizing the clamping of steel pipes of different models;

[0012] 2. The present utility model provides a punching device for steel pipe processing. When a long steel pipe needs to be continuously punched, the position of the steel pipe can be positioned, avoiding repeated measurement and repeated marking;

[0013] 3. The present utility model provides a punching device for steel pipe processing, which can flexibly control the number of a row of punching heads and the interval between the punching heads, thereby controlling the number of holes punched in the steel pipe and the distance between the holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a side view of the structure of the present utility model;

[0016] Figure 3 is a side view of the structure of the present utility model;

[0017] Figure 4 For Figure 2 The enlarged schematic diagram of the structure at position A in

[0018] Figure 5 The schematic diagram of the punching execution part in the structure of the present utility model;

[0019] Figure 6 The schematic diagram of the steel pipe clamping device in the structure of the present utility model;

[0020] Figure 7 For Figure 6 The enlarged schematic diagram of the structure at position B in

[0021] In the figure: support platform 1, housing 2, steel pipe limit seat 3, clamping plate 4, connecting rod 5, connecting beam 6, pressing screw rod 7, positioning plate 8, bottom plate 9, supporting rod 10, connecting steel pipe 11, pressing platform 12, punching device 13, hole head 131, punching needle 132, nesting 14, fastening steel pipe 15, hydraulic cylinder 16, piston rod 17. Specific implementation manners

[0022] 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0023] Please refer to Figures 1-7 , the present utility model provides a technical solution: a punching device for steel pipe processing, including a support platform 1 and a housing 2 fixedly welded to the upper end of the support platform 1, and a steel pipe limit seat 3 is fixedly installed above the support platform 1. A connecting rod 5 is fixedly installed on the steel pipe limit seat 3. The connecting rod 5 and the pressing screw rod 7 pass through three holes of the connecting beam 6. Two of the connecting rods 5 are in a fixed state. A bottom plate 9 is fixedly installed inside the housing 2, a supporting rod 10 is fixedly installed above the bottom plate 9, there is a punching pressing platform 12 inside the housing 2, a connecting steel pipe 11 is fixed below the punching pressing platform, the supporting rod 10 is cooperatively connected with the connecting steel pipe 11, and a nesting 14 is fixedly installed below the punching pressing platform 12, a punching device 13 is fixedly installed below the nesting 14, and a hydraulic cylinder 16 is fixedly installed at the upper end of the housing 2. The present utility model is hydraulically driven.

[0024] The steel pipe limit seats 3 are symmetrically arranged on the support platform 1, with a total of two sets, front and back. The two sides of the steel pipe limit seat 3 are V-shaped limit plates, and there is a groove between the two V-shaped limit plates on both sides. There are two connecting rods 5, and the two rods are symmetrically fixed on both sides of the groove by bolt connection. A clamping plate 4 is arranged in the middle of the connecting rod 5. The two sides of the clamping plate 4 are processed into curved surfaces and kept in close contact with the connecting rod 5. Oil spraying lubrication can be used to keep the relative movement of the two smooth. The surface of the pressing screw rod 7 is a trapezoidal thread, which passes through the threaded hole opened in the middle of the connecting beam 6 and is connected to the clamping plate 4. By rotating the upper handle, the clamping plate 4 can be controlled to make a reciprocating motion, and by changing the size of the hole formed between the steel pipe limit seat 3 and the clamping plate 4, the clamping requirements for steel pipes of different sizes can be met.

[0025] The punching pressing platform 12 and the four connecting steel pipes 11 are tightly connected by interference fit, and the interference fit can ensure the reliable connection of the two. One end of the supporting rod 10 is fixedly connected to the bottom plate 9, and the other end is inserted into the connecting steel pipe 11 with clearance fit. The clearance fit can make the relative movement of the two not affected by resistance. A fastening steel pipe 15 is fixedly connected above the pressing platform 12, and the fastening steel pipe 15 is fixedly connected to the internal piston rod 17 of the hydraulic cylinder 16 through side bolts. At this time, the movement of the piston of the hydraulic cylinder can push the punching pressing platform downward to complete punching.

[0026] The surface of the pressing screw rod 7 adopts a trapezoidal thread, and the connecting beam 6 is designed with corresponding threaded holes at the connection position with the pressing screw rod 7. One end of the pressing screw rod 7 is slidably connected to the clamping plate 4. The clamping plate 4 can form holes of different sizes with the steel pipe limit seat 3 through reciprocating motion for clamping and fixing steel pipes of different models. A positioning plate 8 is fixedly connected to the front of the clamping plate 4, and through holes are made on the positioning plate 8. The punching position can be fixed by inserting pins into the holes in the punched holes and the positioning plate 8. The lower half of the clamping plate 4 is an inverted V-shaped notch, which is a V-shaped opening facing downward in this application, and the V-shaped opening on the V-shaped limit plate is designed in the opposite direction; the positioning plate 8 is located directly above the inverted V-shaped notch; through Figure 6 It is shown that the clamping plate 4 is exactly located above the groove of the steel pipe limit seat 3, and a cooperation is formed between the inverted V-shaped notch on the clamping plate 4 and the V-shaped notches on the two V-shaped limit plates on both sides, which is convenient for fixing the inserted steel pipe to be processed.

[0027] A nest 14 is fixedly installed below the punching pressing platform 12. The nest 14 is tightly connected to the punching device 13 below by a mortise and tenon structure. The punching device 13 is a single block structure, which can be manually inserted or taken out. The number of punchings can be flexibly controlled, and the punching device is a detachable structure, which can be divided into a punching head 131 and a punching needle 132. The punching size can be changed by adjusting the punching needle 132.

[0028] During actual use, first, the steel pipe clamping devices on both sides are in the maximum clamping state. The steel pipe is horizontally passed through the two clamping devices and closely fits with the middle groove of the steel pipe limit seat 3. Turn the handle, press down the screw rod 7 to rotate and press down to drive the clamping plate 4 to close and clamp the steel pipe. Start the hydraulic equipment, and the piston rod 17 in the hydraulic cylinder 16 pushes the punching and pressing platform downward to complete punching. When one punching is completed, extract the punched part. If you want to continue punching, you can insert a pin into the corresponding through holes of the positioning plate 8 and the punched steel pipe for positioning and continue punching. In this way, by realizing the through holes with set spacing, it can be ensured that the spacing between the subsequent punched parts and the previously punched holes is equal or changed in multiples.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for steel pipe processing, characterized in that: The invention comprises a support platform (1) and a shell (2) fixedly welded to the upper end of the support platform (1), and a steel pipe limit seat (3) is fixedly installed above the support platform (1), a connecting rod (5) is fixedly installed on the steel pipe limit seat (3), the connecting rod (5) and the pressing screw rod (7) are fixed by a connecting beam (6), a bottom plate (9) is fixedly installed inside the shell (2), a supporting rod (10) is fixedly installed above the bottom plate (9), a punching pressing platform (12) is provided inside the shell (2), a connecting steel pipe (11) is fixedly installed below the punching pressing platform (12), the supporting rod (10) cooperates with the connecting steel pipe (11), a nesting (14) is fixedly installed below the punching pressing platform (12), a puncher (13) is fixedly installed below the nesting (14), and a hydraulic cylinder (16) is fixedly installed at the upper end of the shell (2).

2. A punching device for steel pipe processing according to claim 1, characterized in that: The steel pipe limit seat (3) is provided with two groups, and the two groups are symmetrically arranged on the support platform (1). The two sides of the steel pipe limit seat (3) are V-shaped limit plates, and a groove is provided between the two V-shaped limit plates. There are two connecting rods (5), and the two rods are symmetrically fixed on both sides of the groove by bolt connection. A clamping plate (4) is arranged in the middle of the connecting rod (5), and the two sides of the clamping plate (4) are processed with curved surfaces and keep in a fitting state with the connecting rod (5). The pressing screw rod (7) passes through the threaded hole opened in the middle of the connecting beam (6) and is connected to the clamping plate (4).

3. A punching device for steel pipe processing according to claim 1, characterized in that: The punching and pressing platform (12) is tightly connected to four connecting steel pipes (11) through interference fit; one end of the support rod (10) is connected and fixed to the bottom plate (9), and the other end is inserted into the connecting steel pipe (11) through clearance fit; a fastening steel pipe (15) is fixedly connected to the top of the punching and pressing platform (12); the fastening steel pipe (15) is fixedly connected to the inner piston rod (17) of the hydraulic cylinder (16) through side bolts.

4. A punching device for steel pipe processing according to claim 2, characterized in that: The surface of the pressing screw rod (7) is provided with a trapezoidal thread, and the connection position between the connecting beam (6) and the pressing screw rod (7) is designed with a corresponding threaded hole, one end of the pressing screw rod (7) is slidably connected to the clamping plate (4), and the front side of the clamping plate (4) is fixedly connected to the positioning plate (8), and the positioning plate (8) is provided with a through hole.

5. A punching device for steel pipe processing according to claim 3, characterized in that: A nesting (14) is fixedly installed below the punching pressing platform (12), and the nesting (14) is tightly connected to the punching device (13) below by using a mortise and tenon structure. The punching device (13) is a single block-shaped detachable structure and can be divided into a punching head (131) and a punching needle (132).

6. A punching device for steel pipe processing according to claim 4, characterized in that: The lower half of the clamping plate (4) is an inverted V-shaped notch, and the positioning plate (8) is located directly above the inverted V-shaped notch.

Images