Pipe contracting machine for steel pipe machining

Abstract

The utility model belongs to the technical field of pipe contracting machines, and particularly discloses a pipe contracting machine for steel pipe machining, which comprises a machine frame, a lower support is fixedly mounted in the machine frame, a plurality of groups of lower supporting grooves are formed in the top of the lower support, and a guide rod is fixedly connected to the bottom of the inner wall of the machine frame. A sliding frame is slidably connected to the outer surface of the guide rod through a rotating mechanism, an upper clamping frame is arranged at the bottom of the sliding frame, a plurality of sets of upper clamping grooves are formed in the lower surface of the upper clamping frame, and a pipe shrinking mechanism is arranged on the rack. According to the pipe shrinking machine for steel pipe machining, during pipe shrinking treatment, only pipes of corresponding models need to be placed on the corresponding lower supporting grooves in the lower support, the pipes can be stably clamped by being matched with the rotating mechanism and the upper clamping frame, and finally pipe shrinking treatment is conducted on the pipes through the pipe shrinking mechanism; in the process, different die heads in the pipe contracting mechanism can directly conduct pipe contracting treatment on pipes with different pipe diameters, the die heads do not need to be disassembled frequently, and the treatment efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tube shrinking machines, and specifically to a tube shrinking machine for processing steel tubes. Background Art

[0002] A tube shrinking machine is a device used to process pipe fittings. It is mainly used to expand or shrink the end face of a pipe or pipe fitting. It can compress or expand one or both ends of the pipe fitting through mechanical pressure or hydraulic pressure, thereby changing the diameter or shape of the pipe fitting.

[0003] Most existing tube shrinking machines can only shrink or expand one type of steel tube. If tube shrinkage and expansion operations are required for tubes of different diameters, the clamping mechanism must be adjusted to adapt to the corresponding diameter of the tube. At the same time, the die head used for tube expansion and shrinkage must be disassembled and replaced with a new die head. Frequent adjustment of the clamping mechanism and replacement of the die will increase the downtime in the production process, affecting production efficiency and capacity. Utility Model Content

[0004] In view of this, the purpose of the present invention is to solve the shortcomings of the background technology and to propose a pipe shrinking machine for steel pipe processing to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model provides a tube shrinking machine for steel pipe processing, including a frame, a lower bracket is fixedly installed inside the frame, a plurality of groups of lower brackets are provided on the top of the lower bracket, a guide rod is fixedly connected to the bottom of the inner wall of the frame, the outer surface of the guide rod is slidably connected to a slide through a rotation mechanism, an upper clamping frame is provided at the bottom of the slide, a plurality of groups of upper clamping grooves are provided on the lower surface of the upper clamping frame, and a tube shrinking mechanism is provided on the frame.

[0006] Preferably, the rotation mechanism includes a screw rotatably connected to the bottom of the inner wall of the frame, and the outer surface of the screw is threadedly sleeved with the inner surface of the slide. The positions of the two groups of upper clamping frames can be adjusted by the rotation mechanism to cooperate with the corresponding two groups of lower brackets to stably clamp the pipe fittings, wherein the positions of the lower bracket and the upper clamping frame are on the same vertical plane, and the upper clamping groove is adapted to the lower bracket.

[0007] Preferably, a rotary handle is provided on the top of the screw rod, and a spring is provided on the movable sleeve on the outer surface of the guide rod.

[0008] Preferably, the tube shrinking mechanism includes a hydraulic cylinder fixedly mounted on a frame, and an output end of the hydraulic cylinder is fixedly connected to a hydraulic rod. Different types of tubes can be shrunk and expanded by the tube shrinking mechanism without disassembling and replacing the mold head.

[0009] Preferably, one end of the hydraulic rod away from the hydraulic cylinder is fixedly connected to a push plate, and the outer surface of the push plate is provided with several groups of mold heads.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This steel pipe shrinking machine only requires placing the corresponding type of pipe on the corresponding lower bracket on the lower bracket during the shrinking process. The pipe can be stably clamped with the help of the rotation mechanism and the upper clamping frame. Finally, the pipe is shrunk by the shrinking mechanism. During this process, different die heads in the shrinking mechanism can directly shrink pipes of different diameters, without the need to frequently disassemble the die heads, thereby improving processing efficiency.

[0012] 2. In the steel pipe reduction machine, when the upper clamping frame moves down to clamp the pipe, the spring will be gradually compressed and generate a reverse buffering force. The stable buffering force helps to ensure the stability and controllability during the pipe reduction operation, thereby improving the processing accuracy and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of this application;

[0014] Figure 2 This is a schematic diagram of the internal structure of the rack for this application;

[0015] Figure 3 This is a schematic diagram of the push plate surface structure of this application.

[0016] Among them: 1. Frame; 2. Lower bracket; 3. Lower bracket; 4. Guide rod; 5. Slide; 6. Upper clamping frame; 7. Upper clamping slot; 8. Screw; 9. Turning handle; 10. Spring; 11. Hydraulic cylinder; 12. Hydraulic rod; 13. Push plate; 14. Die head. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0018] See also Figure 1-3A tube shrinking machine for steel pipe processing includes a frame 1, a lower bracket 2 is fixedly installed inside the frame 1, and a plurality of lower brackets 3 are opened on the top of the lower bracket 2. A guide rod 4 is fixedly connected to the bottom of the inner wall of the frame 1, and a slide 5 is slidably connected to the outer surface of the guide rod 4 through a rotation mechanism. An upper clamping frame 6 is provided at the bottom of the slide 5, and a plurality of upper clamping grooves 7 are opened on the lower surface of the upper clamping frame 6. A tube shrinking mechanism is provided on the frame 1.

[0019] Through the above technical solution, the device can place the pipe in the lower bracket 3 on the lower bracket 2 when in use, and the upper clamping bracket 6 can be controlled to move downward through the rotation mechanism, and the pipe can be stably clamped in conjunction with the upper clamping groove 7, and finally the pipe can be shrunk or expanded through the pipe shrinking mechanism.

[0020] Specifically, the rotation mechanism includes a screw rod 8 rotatably connected to the bottom of the inner wall of the frame 1 , and the outer surface of the screw rod 8 is threadedly sleeved with the inner surface of the slide 5 .

[0021] Through the above technical solution, during the rotation of the screw rod 8 , the guide rod 4 will play a relative limiting role on the slide 5 , so that the slide 5 can move axially along the screw rod 8 .

[0022] Specifically, a rotary handle 9 is provided on the top of the screw rod 8 , and a spring 10 is movably sleeved on the outer surface of the guide rod 4 .

[0023] Through the above technical solution, when the slide 5 moves downward along the guide rod 4, the spring 10 will be compressed. This is to reduce the instantaneous squeezing force on the steel pipe and improve the protection effect.

[0024] Specifically, the tube shrinking mechanism includes a hydraulic cylinder 11 fixedly mounted on the frame 1 , and an output end of the hydraulic cylinder 11 is fixedly connected to a hydraulic rod 12 .

[0025] Through the above technical solution, the two groups of hydraulic cylinders 11 will respectively apply force to the corresponding hydraulic rods 12, thereby driving the corresponding push plates 13 to move forward.

[0026] Specifically, one end of the hydraulic rod 12 away from the hydraulic cylinder 11 is fixedly connected to a push plate 13 , and a plurality of groups of die heads 14 are provided on the outer surface of the push plate 13 .

[0027] Through the above technical solution, the number of die heads 14 is set to multiple groups with different types, so as to perform tube shrinkage processing on different types of steel tubes at different positions.

[0028] Working principle: During use, the device can shrink steel pipes of different diameters, that is, first place the pipe in the appropriate lower bracket 3 on the two groups of lower brackets 2, and the lower bracket 3 on the two groups of lower brackets 2 will stably support the pipe, then rotate the handle 9 to drive the screw 8 to rotate, and the slide 5 will be linked to move during the rotation of the screw 8, so that the slide 5 will move downward along the axial direction of the screw 8 under the relative limiting action of the guide rod 4. During this process, the two groups of upper clamping frames 6 on the outside of the slide 5 will move downward synchronously until they cooperate with the upper clamping groove 7 to stably clamp the pipe in the lower bracket 3. Here, during the downward movement of the slide 5, the spring 10 will be gradually squeezed to form a reverse buffering force, which can effectively reduce the instantaneous excessive extrusion force caused The steel pipe is deformed and damaged, which improves the protection performance of the steel pipe. Finally, the hydraulic cylinder 11 is turned on to push the push plate 13 forward through the hydraulic rod 12. At this time, the die head 14 opposite to the corresponding lower bracket 3 and the upper clamping groove 7 will be inserted into the two ends of the pipe to shrink it. During the entire shrinking operation, there is no need to repeatedly disassemble and replace the die head 14. Just place the corresponding pipe in the corresponding position of the lower bracket 2 and let the corresponding die head 14 shrink it. Since there is no need to frequently replace the die head 14, the operation process becomes simpler and faster. The operator only needs to place the steel pipe in the correct position, and the machine can automatically shrink the pipe, which greatly reduces the complexity and technical requirements of the operation.

[0029] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tube shrinking machine for steel tube processing, comprising a frame (1), characterized in that: A lower bracket (2) is fixedly installed inside the frame (1), and a plurality of groups of lower brackets (3) are provided on the top of the lower bracket (2). A guide rod (4) is fixedly connected to the bottom of the inner wall of the frame (1), and the outer surface of the guide rod (4) is slidably connected to a slide (5) through a rotation mechanism. An upper clamping frame (6) is provided at the bottom of the slide (5), and a plurality of groups of upper clamping grooves (7) are provided on the lower surface of the upper clamping frame (6). A tube shrinking mechanism is provided on the frame (1).

2. A tube reducing machine for steel tube processing according to claim 1, characterized in that: The rotation mechanism comprises a screw rod (8) rotatably connected to the bottom of the inner wall of the frame (1), and the outer surface of the screw rod (8) is threadedly sleeved with the inner surface of the slide (5).

3. The steel pipe reducing machine according to claim 2, characterized in that: A rotary handle (9) is provided on the top of the screw rod (8), and a spring (10) is movably sleeved on the outer surface of the guide rod (4).

4. The steel pipe reducing machine according to claim 1, characterized in that: The tube shrinking mechanism comprises a hydraulic cylinder (11) fixedly mounted on a frame (1), and an output end of the hydraulic cylinder (11) is fixedly connected to a hydraulic rod (12).

5. The steel pipe reducing machine according to claim 4, characterized in that: One end of the hydraulic rod (12) away from the hydraulic cylinder (11) is fixedly connected to a push plate (13), and the outer surface of the push plate (13) is provided with a plurality of groups of die heads (14).

Images