Necking device for steel pipe

Abstract

The utility model discloses a necking down device for a steel pipe, and particularly relates to the technical field of steel pipe machining equipment, the necking down device comprises a workbench, a motor is fixedly installed on the bottom surface of the workbench, an electric push rod is fixedly installed on one side of the top surface of the workbench, and a fixing plate is fixedly installed at the output end of the electric push rod; and two limiting rods are fixedly mounted on one side of the fixing plate. According to the necking device for the steel pipe, in the actual work, the steel pipe is placed in the placing frame, the threaded rod is rotated so that the steel pipe can be clamped and fixed through the fixing ring, the hydraulic cylinder pushes the supporting plate to move, the end of the steel pipe is inserted into the necking die so that the steel pipe can be necked, the motor drives the gear to rotate, and the steel pipe is placed in the placing frame. When the side, provided with teeth, of the gear is meshed with the rack, the rack can be pushed to move, then the limiting plate can be driven to move, the electric push rod pushes the fixing plate to move, the limiting rod is inserted into the limiting hole, and therefore different necking dies can be conveniently and rapidly switched.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing equipment, in particular to a shrinking device for steel pipes. Background Art

[0002] Steel pipe is a kind of pipe with hollow cross section that can be used to transport fluids. Compared with round steel, steel pipe is lighter in weight when the bending and torsional strength are the same, so it is widely used in the manufacture of structural parts and mechanical parts. In the production and processing of steel pipe, sometimes it is necessary to shrink the end of the steel pipe. At present, steel pipe shrinking machine is usually used to process steel pipe.

[0003] After searching, for example, the utility model with application number 202121420950.1 discloses a high-stability steel pipe shrinking machine, including a workbench, a fixing device and a shrinking mold. A sliding plate is provided on the workbench, and the shrinking mold is arranged at one end of the workbench away from the sliding plate. The sliding plate is slidably connected to the workbench, and the sliding direction of the sliding plate is the direction close to or away from the shrinking mold. When shrinking the steel pipe, it is often necessary to process ports of different sizes, and then different shrinking molds are required. The utility model is not convenient for quickly switching different shrinking molds. Therefore, in order to solve the above defects, the inventor proposes a shrinking device for steel pipes. Utility Model Content

[0004] The main purpose of the utility model is to provide a shrinking device for a steel pipe, which can effectively solve the problem of inconvenience in quickly switching different shrinking molds.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A shrinking device for steel pipes comprises a workbench, a motor is fixedly mounted on the bottom surface of the workbench, an electric push rod is fixedly mounted on one side of the top surface of the workbench, a fixed plate is fixedly mounted on the output end of the electric push rod, two limit rods are fixedly mounted on one side of the fixed plate, and two movable grooves are provided on one side of the top surface of the workbench.

[0007] Preferably, two first sliding bars are fixedly installed inside the workbench, and the outer surfaces of the two first sliding bars are movably connected with a rack together. A limit plate is fixedly installed on the top surface of the rack, and a plurality of shrinking molds are provided on the top surface of the limit plate. A plurality of limit holes are provided on one side of the limit plate. A gear is movably installed inside the workbench, and the output end of the motor is fixedly connected to the gear.

[0008] Preferably, one side of the gear is provided with teeth.

[0009] Preferably, a plurality of fixing holes are provided on the top surface of the limiting plate, and mounting holes are provided on both sides of the shrinking mold.

[0010] Preferably, the sizes of the two mounting holes are the same as those of the fixing holes.

[0011] Preferably, a second sliding rod is fixedly installed inside the two movable grooves, and the outer surfaces of the two second sliding rods are movably connected with movable blocks. A support plate is commonly fixedly installed on the top surfaces of the two movable blocks, and a hydraulic cylinder is fixedly installed on one side of the top surface of the workbench, and the output end of the hydraulic cylinder is fixedly connected to the support plate.

[0012] Preferably, a baffle is fixedly installed on one side of the support plate, placement racks are fixedly installed on both sides of the top surface of the support plate, connecting plates are fixedly installed on both sides of the top surface of the support plate, one side of the two connecting plates are movably connected with threaded rods, and the opposite ends of the two threaded rods are movably connected with fixing rings.

[0013] Preferably, a rotating handle is fixedly mounted on one end of the two threaded rods away from the fixing ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a shrinking device for steel pipes. A workbench is set up. In actual work, the steel pipe is placed in a placing frame, and a threaded rod is rotated so that a fixing ring clamps and fixes the steel pipe, and a hydraulic cylinder pushes a supporting plate to move, and the end of the steel pipe is inserted into a shrinking mold to shrink the steel pipe. A motor drives the gear to rotate. When one side of the gear with teeth meshes with the rack, the rack can be pushed to move, and then the limit plate can be driven to move. The electric push rod pushes the fixed plate to move, so that the limit rod is inserted into the limit hole, thereby facilitating rapid switching of different shrinking molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the workbench of the utility model;

[0018] Figure 3 This is a schematic diagram of the limit plate structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mobile slot of the utility model;

[0020] Figure 5 This is a schematic diagram of the support plate structure of the utility model.

[0021] In the figure: 1. workbench; 2. motor; 3. electric push rod; 4. fixed plate; 5. limit rod; 6. moving groove; 101. first slide bar; 102. rack; 103. limit plate; 104. shrinking mold; 105. gear; 106. limit hole; 1031. fixing hole; 1041. mounting hole; 601. second slide bar; 602. moving block; 603. support plate; 604. hydraulic cylinder; 6031. baffle; 6032. placement rack; 6033. connecting plate; 6034. threaded rod; 6035. fixing ring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] The utility model discloses a shrinking device for a steel pipe, such as Figure 1 As shown, it includes a workbench 1, a motor 2 is fixedly installed on the bottom surface of the workbench 1, an electric push rod 3 is fixedly installed on one side of the top surface of the workbench 1, a fixed plate 4 is fixedly installed on the output end of the electric push rod 3, and the electric push rod 3 can push the fixed plate 4 to move.

[0024] Two limiting rods 5 are fixedly mounted on one side of the fixing plate 4 . When the fixing plate 4 moves, the limiting rods 5 can be driven to move. Two moving grooves 6 are arranged on one side of the top surface of the workbench 1 .

[0025] like Figure 2 As shown, two first slide bars 101 are fixedly installed inside the workbench 1 , and the outer surfaces of the two first slide bars 101 are movably connected with a rack 102 , and the rack 102 can move along the two first slide bars 101 .

[0026] A limit plate 103 is fixedly mounted on the top surface of the rack 102 . When the rack 102 moves, the limit plate 103 can be driven to move.

[0027] A plurality of shrinking dies 104 are disposed on the top surface of the limiting plate 103 . When the limiting plate 103 moves, the plurality of shrinking dies 104 can be driven to move so that the steel pipe can be aligned with different shrinking dies 104 .

[0028] A plurality of limiting holes 106 are provided on one side of the limiting plate 103. When the limiting rod 5 is inserted into the limiting hole 106, the limiting plate 103 can be prevented from moving.

[0029] A gear 105 is movably installed inside the workbench 1, and the output end of the motor 2 is fixedly connected to the gear 105. The motor 2 can drive the gear 105 to rotate. One side of the gear 105 is provided with teeth. When the side of the gear 105 with teeth is engaged with the rack 102, the rack 102 can be pushed to move, and then different shrinking molds 104 can be switched.

[0030] like Figure 3 As shown, the top surface of the limiting plate 103 is provided with a plurality of fixing holes 1031, and both sides of the shrinking mold 104 are provided with mounting holes 1041. The shrinking mold 104 is placed on the top surface of the limiting plate 103, and the fixing holes 1031 can overlap with the mounting holes 1041. Then, the shrinking mold 104 can be installed by inserting external bolts. The sizes of the two mounting holes 1041 are the same as those of the fixing holes 1031, and then the external bolts can be inserted into the overlapping mounting holes 1041 and the fixing holes 1031.

[0031] like Figure 4 As shown, the second slide bars 601 are fixedly installed inside the two moving grooves 6 , and the outer surfaces of the two second slide bars 601 are movably connected with moving blocks 602 , and the moving blocks 602 can move along the second slide bars 601 .

[0032] A support plate 603 is fixedly mounted on the top surfaces of the two moving blocks 602 , so that the support plate 603 can move.

[0033] A hydraulic cylinder 604 is fixedly installed on one side of the top surface of the workbench 1, and the output end of the hydraulic cylinder 604 is fixedly connected to the support plate 603, and the hydraulic cylinder 604 can push the support plate 603 to move.

[0034] like Figure 5 As shown, a baffle 6031 is fixedly installed on one side of the support plate 603 , and placement racks 6032 are fixedly installed on both sides of the top surface of the support plate 603 , and the steel pipe can be placed in the placement racks 6032 .

[0035] Connecting plates 6033 are fixedly installed on both sides of the top surface of the support plate 603, and threaded rods 6034 are movably connected to one side of the two connecting plates 6033. Fixed rings 6035 are movably connected to the opposite ends of the two threaded rods 6034. By rotating the threaded rods 6034, the fixed rings 6035 can clamp and fix the steel pipe placed in the placement rack 6032.

[0036] The working principle of the utility model is as follows: the staff first places the steel pipe in the two placement racks 6032, places one end of the steel pipe against the baffle 6031, and then rotates the two threaded rods 6034 in sequence to make the two fixing rings 6035 clamp and fix the steel pipe, and then starts the hydraulic cylinder 604 to push the support plate 603 to move, when one end of the steel pipe is inserted into the shrinking mold 104, the steel pipe can be shrunken, when it is necessary to switch the shrinking mold 104, start the motor 2 to drive the gear 105 to rotate, when the side of the gear 105 with teeth is meshed with the rack 102, the rack 102 can be pushed to move, when the rack 102 moves, it can drive the limit plate 103 to move to switch the shrinking mold 104, after the switching is completed, start the electric push rod 3 to push the fixed plate 4 to move, so that the limit rod 5 is inserted into the limit hole 106, and the switching of the shrinking mold 104 can be completed.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A shrinking device for a steel pipe, comprising a workbench (1), Features: A motor (2) is fixedly mounted on the bottom surface of the workbench (1), an electric push rod (3) is fixedly mounted on one side of the top surface of the workbench (1), a fixed plate (4) is fixedly mounted on the output end of the electric push rod (3), two limit rods (5) are fixedly mounted on one side of the fixed plate (4), and two movable grooves (6) are provided on one side of the top surface of the workbench (1).

2. A steel pipe necking device according to claim 1, Features: Two first sliding bars (101) are fixedly installed inside the workbench (1), and the outer surfaces of the two first sliding bars (101) are movably connected to a rack (102). A limit plate (103) is fixedly installed on the top surface of the rack (102), and a plurality of shrinking molds (104) are provided on the top surface of the limit plate (103). A plurality of limit holes (106) are provided on one side of the limit plate (103). A gear (105) is movably installed inside the workbench (1), and the output end of the motor (2) is fixedly connected to the gear (105).

3. A steel pipe necking device according to claim 2, Features: One side of the gear (105) is provided with teeth.

4. A steel pipe necking device according to claim 2, Features: The top surface of the limiting plate (103) is provided with a plurality of fixing holes (1031), and both sides of the shrinking mold (104) are provided with mounting holes (1041).

5. A steel pipe necking device according to claim 4, Features: The dimensions of the two mounting holes (1041) are the same as those of the fixing hole (1031).

6. A steel pipe necking device according to claim 1, Features: A second slide bar (601) is fixedly installed inside the two movable grooves (6), and the outer surfaces of the two second slide bars (601) are movably connected with a movable block (602). A support plate (603) is fixedly installed on the top surfaces of the two movable blocks (602). A hydraulic cylinder (604) is fixedly installed on one side of the top surface of the workbench (1), and the output end of the hydraulic cylinder (604) is fixedly connected to the support plate (603).

7. A steel pipe necking device according to claim 6, Features: A baffle (6031) is fixedly installed on one side of the support plate (603), a placement rack (6032) is fixedly installed on both sides of the top surface of the support plate (603), a connecting plate (6033) is fixedly installed on both sides of the top surface of the support plate (603), one side of the two connecting plates (6033) is movably connected to a threaded rod (6034), and the opposite ends of the two threaded rods (6034) are movably connected to a fixing ring (6035).

8. A steel pipe necking device according to claim 7, Features: A rotating handle is fixedly mounted on one end of the two threaded rods (6034) away from the fixing ring (6035).

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