CN220277981U

CN220277981U - Internal expansion type rib rolling machine

Info

Publication number: CN220277981U
Application number: CN202320917205.0U
Authority: CN
Inventors: 姚柏松; 刘卫强; 朱雪林
Original assignee: Jiangsu Zhou Jijie Lntelligent Technology Co ltd
Current assignee: Jiangsu Zhou Jijie Lntelligent Technology Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2024-01-02
Anticipated expiration: 2033-04-12

Abstract

The utility model belongs to the technical field of rolling rib processing, and particularly relates to an internal expansion type rolling rib machine. The fixing device solves the problem that when a pipe is fixed through a smaller fixing shaft, the structural strength of the pipe and the rolling effect are easily affected when the pipe is rolled. The internal expansion type rib rolling machine comprises a frame, wherein a rib rolling forming structure is arranged on the frame, an internal expansion positioning structure is further arranged on the frame, and the internal expansion positioning structure is expanded inside a pipe to be rolled and forms interference type limiting fit with the pipe in the circumferential direction. The circumferential stress fixation of the inner wall of the pipe is realized, the influence on the strength of the pipe is reduced, and the rolling effect is improved.

Description

Internal expansion type rib rolling machine

Technical Field

The utility model belongs to the technical field of rolling rib processing, and particularly relates to an internal expansion type rolling rib machine.

Background

In the rolling bar processing equipment of the pipe, in order to facilitate pipe taking, the fixed shaft can be made small in the prior art, and the pipe is in a unilateral stress state when the pipe is rolled, so that the strength of the pipe is affected.

Patent publication number CN209049933U discloses a steel pipe mouth rolling bar forming machine, comprising: casing, protruding muscle shaping structure, clamping mechanism, install clamping mechanism on the casing, clamping mechanism is used for carrying out the location to the steel pipe and presss from both sides tightly and can support the steel pipe mouth of pipe outer wall simultaneously, casing internally mounted has protruding muscle shaping mechanism, and protruding muscle shaping mechanism includes: the steel pipe opening pressing device comprises a rotary driving device, an extrusion part and a longitudinal driving device, wherein the output end of the rotary driving device stretches into the inside of a steel pipe opening, the longitudinal driving device is arranged in the rotary driving device, the extrusion part is arranged on the output end of the rotary driving device and used for pushing the extrusion part to move in the direction perpendicular to the rotary driving device, and the extrusion part is used for applying pressure to the inner wall of the steel pipe opening under the action of the thrust of the longitudinal driving device so that the wall of the steel pipe is deformed and protrudes on the outer wall to form a convex rib.

The prior art lacks an expansion positioning structure, is easy to unilateral stressed when rolling the rib, and influences the effect and the structural strength of the rolling rib.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides an internal expansion type rib rolling machine which can expand and position, protect structural strength and improve the rib rolling effect.

The aim of the utility model can be achieved by the following technical scheme: an internal expansion type rib rolling machine comprises a frame, wherein an internal expansion positioning structure and a rib rolling forming structure are arranged on the frame, and the internal expansion positioning structure is expanded in a pipe to be rolled and forms circumferential interference type limit fit with the pipe.

The internal expansion type rib rolling machine realizes the limit of a pipe to be rolled through the internal expansion positioning structure, ensures uniform stress during rib rolling through internal expansion and the whole circumferential force application of the inner wall of the pipe, has small influence on the strength of the pipe, and is used for rolling the pipe specifically.

In the internal expansion type rib rolling machine, the internal expansion positioning structure comprises a solid shaft and a hollow main shaft, the solid shaft penetrates through the hollow main shaft, the hollow main shaft is rotationally connected to the frame through a limiting bearing, and the solid shaft is connected with a first telescopic unit for driving the solid shaft to move in the length direction.

The solid shaft is arranged in the hollow main shaft in a penetrating way, can move relatively in the length direction, the hollow main shaft is rotationally connected to the limiting bearing, after expansion and pipe limiting, the pipe can be driven to rotate synchronously, and the first telescopic unit is used for pulling the solid shaft.

In the internal expansion type rib rolling machine, the end part of the hollow main shaft comprises a variable diameter part which can expand and has a reducing and restoring trend, the variable diameter part comprises a plurality of circumferentially distributed grooves, and the outer diameter of the variable diameter part is smaller than the inner diameter of a pipe to be rolled when the variable diameter part is not expanded.

The diameter-variable part can expand and expand, can be clung to the inner wall of the pipe after expansion to form limit fit, the slotting meets the expansion requirement of the diameter-variable part, the outer diameter of the diameter-variable part is smaller than the inner diameter of the pipe when the diameter-variable part is not expanded, and the pipe can be sleeved in the diameter-variable part before the expansion of the diameter-variable part.

In the internal expanding rib rolling machine, the solid shaft end part comprises a conical part, the outer end size of the conical part is larger than the inner end, and the diameter of the outermost end of the conical part is larger than the inner diameter of the reducing part.

The outer diameter of the outer end of the conical part is larger than that of the inner end, so that the diameter-variable part can be expanded when the conical part is pulled to be close to the diameter-variable part, the diameter-variable part is clung to the inner wall of the pipe, and limiting is realized.

In the internal expanding type rib rolling machine, the first telescopic unit comprises a first telescopic cylinder, the first telescopic cylinder is fixed on the frame, and the solid shaft is fixedly connected with an output shaft of the first telescopic cylinder.

The first telescopic cylinder drives the solid shaft to axially move in a telescopic mode.

In the internal expansion type rib rolling machine, the rib rolling forming structure comprises a second telescopic cylinder and a hob used for rolling ribs, the second telescopic cylinder is fixed on the frame through a cylinder seat, the hob is rotationally connected to an output shaft of the second telescopic cylinder through a connecting seat, and a limiting rod used for limiting relative rotation is arranged between the cylinder seat and the connecting seat.

The hob realizes rolling rib through pressing on the pipe, a connecting seat is arranged on an output shaft of the second telescopic cylinder, the connecting seat is driven to act, the hob is rotationally connected on the connecting seat and moves along with the connecting seat, the hob is pressed to be clung to the pipe or is far away from the pipe, a limiting rod limits the relative rotation of the cylinder seat and the connecting seat, and the radial direction of the hob is always vertical to the length direction of the pipe.

In the internal expansion type rib rolling machine, a first synchronous wheel is fixedly arranged on the hollow main shaft, the first synchronous wheel is synchronously connected with an output shaft of a main motor in a linkage manner, and the main motor is fixedly arranged on the frame.

The first motor drives the first synchronous wheel to rotate, namely the hollow main shaft.

In the internal expanding type rib rolling machine, at least two limit bearings are concentric, and the first synchronous wheel is arranged between the limit bearings.

The at least two limit bearings limit the deviation of the hollow main shaft in the non-length direction better, and the first synchronous wheel is arranged between the limit bearings, so that the hollow main shaft cannot be pulled to deviate after the first synchronous wheel is connected with the output shaft of the main motor.

In the internal expansion type rib rolling machine, an abutting part for abutting against the pipe is arranged on the inner side of the reducing part, and the outer diameter of the abutting part is larger than that of the pipe to be rolled.

The pipe is pushed to abut against the abutting part, and has a positioning effect.

In the internal expansion type rib rolling machine, a pushing cylinder is further fixedly arranged on the frame, an output shaft of the pushing cylinder is concentric with the hollow main shaft, a feeding seat is sleeved on the output shaft of the pushing cylinder, and the feeding seat can be pulled out along the length direction for a certain distance.

The pushing cylinder is used for pushing in the pipe to be rolled, the feeding seat is arranged on the output shaft of the pushing cylinder and can rotate, the feeding seat can be pulled out for a certain distance, and the pipe can be preliminarily connected between the feeding seat and the hollow main shaft before being pushed in.

In contrast to the prior art, the method has the advantages that,

1. the internal expansion positioning structure of the internal expansion type rib rolling machine realizes the circumferential close limiting with the inner wall of the pipe through the expansion and the diameter expansion of the hollow main shaft, and the pipe is uniformly stressed, so that the strength of the pipe after the rib rolling can be ensured.

2. The conical part enters the variable-diameter part to expand the variable-diameter part by pulling the solid shaft, and the structure is simple.

3. The feeding seat can be pulled out for a certain distance, and the pipe can be preliminarily connected between the feeding seat and the hollow main shaft before being pushed in, so that the pipe does not need to be held by hands, and the safety is higher.

Drawings

FIG. 1 is a schematic view of the overall structure of the internal expanding type rib roller of the present utility model;

FIG. 2 is an exploded view of the internal expanding bead rolling machine of the present utility model;

fig. 3 is an enlarged detail view at a of fig. 2.

In the figure, a frame 1, a rib forming structure 2, a hob 21, a second telescopic cylinder 22, a cylinder block 23, a connecting block 24, a limit rod 25, an internal expansion positioning structure 3, a solid shaft 4, a first telescopic unit 41, a first telescopic cylinder 42, a conical part 43, a hollow main shaft 5, a limit bearing 51, a reducing part 52, a groove 53, a first synchronizing wheel 54, a second synchronizing wheel 55, a main motor 56, an abutting part 57, a pushing cylinder 6 and a feeding block 61.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

1-3, the internal expansion type rib rolling machine comprises a frame 1, wherein an internal expansion positioning structure 3 and a rib rolling forming structure 2 are arranged on the frame 1, and the internal expansion positioning structure 3 is expanded in a pipe to be rolled and forms circumferential interference type limit fit with the pipe.

Specifically, the internal expansion type rib rolling machine realizes limit of a pipe to be rolled through the internal expansion positioning structure 3, and is equivalent to complete wrapping through internal expansion and the whole circumferential force application of the inner wall of the pipe, so that uniform stress is ensured during rib rolling, the influence on the strength of the pipe is small, the rib rolling forming structure 2 is used for rolling ribs of the pipe, and the position of the concrete rib rolling is on the pipe outside the reducing part 52.

As shown in fig. 3, the internal expansion positioning structure 3 includes a solid shaft 4 and a hollow main shaft 5, the solid shaft 4 is inserted into the hollow main shaft 5, the hollow main shaft 5 is rotatably connected to the frame 1 through a limit bearing 51, and the solid shaft 4 is connected with a first telescopic unit 41 for driving the solid shaft to move in the length direction. The end of the hollow spindle 5 comprises a variable diameter part 52 which can expand and has a reduced restoration tendency, the variable diameter part 52 comprises a plurality of circumferentially distributed grooves 53, and the outer diameter of the variable diameter part 52 is smaller than the inner diameter of the pipe to be rolled when the variable diameter part 52 is not expanded. The solid shaft 4 includes a tapered portion 43 at an end portion, the tapered portion 43 having an outer end larger in size than an inner end, and an outermost end of the tapered portion 43 having a diameter larger than an inner diameter of the variable diameter portion 52. The first telescopic unit 41 comprises a first telescopic cylinder 42, the first telescopic cylinder 42 is fixed on the frame 1, and the solid shaft 4 is fixedly connected with an output shaft of the first telescopic cylinder 42.

Specifically, the hollow main shaft 5 is arranged on the limit bearing 51 and can rotate, the solid shaft 4 is penetrated in the hollow main shaft 5, the solid shaft 4 moves circumferentially under the action of the first telescopic air cylinder 42, the solid shaft 4, the hollow main shaft 5 and the output shaft of the first telescopic air cylinder 42 are concentrically arranged, the solid shaft 4 is connected to the first telescopic air cylinder 42, the solid shaft 4 can rotate as well because the output shaft of the air cylinder can rotate, the diameter of the outer end of the conical part 43 at the end part of the solid shaft 4 is larger than that of the variable diameter part 52, when the first telescopic air cylinder 42 pulls the solid shaft 4 to move, the conical part 43 gradually enters the variable diameter part 52 to achieve the effect of expanding the variable diameter part 52, the variable diameter part 52 gradually expands and clings to the inner wall of a pipe, and circumferential interference fit is formed, so that the hollow main shaft 5 and the pipe synchronously rotate.

As shown in fig. 2 and 3, the rib forming structure 2 includes a second telescopic cylinder 22 and a hob 21 for rolling ribs, the second telescopic cylinder 22 is fixed on the frame 1 through a cylinder seat 23, the hob 21 is rotatably connected to an output shaft of the second telescopic cylinder 22 through a connecting seat 24, and a limiting rod 25 for limiting relative rotation is arranged between the cylinder seat 23 and the connecting seat 24.

Specifically, in this embodiment, the hob 21 is located above the reducing portion 52, the expansion direction of the output shaft of the second telescopic cylinder 22 is perpendicular to the length direction of the pipe, the hob 21 is annular, rolling compression is performed on the pipe to achieve rolling ribs, the hob 21 is rotatably arranged on the connecting seat 24, the connecting seat 24 is driven to further achieve up-and-down movement of the hob 21 along with expansion and contraction of the second telescopic cylinder 22, the limiting rod 25 is arranged on the bottom surface of the cylinder seat 23, a limiting hole capable of being matched with the limiting hole is formed in the connecting seat 24, and the limiting rod 25 is inserted into the limiting hole to prevent relative rotation between the connecting seat 24 and the cylinder seat 23.

The optimized hob 21 inner layer metal and outer layer high strength plastic can effectively protect the product plating layer.

As shown in fig. 1-3, a first synchronous wheel 54 is fixedly arranged on the hollow main shaft 5, the first synchronous wheel 54 is synchronously connected with an output shaft of a main motor 56 in a linkage manner, and the main motor 56 is fixedly arranged on the frame 1. The limit bearings 51 are provided in two, and the first synchronizing wheel 54 is provided between the limit bearings 51.

Specifically, the two limit bearings 51 are concentrically arranged, the second synchronizing wheel 55 is arranged on the output shaft of the main motor 56, the first synchronizing wheel 54 and the second synchronizing wheel 55 are connected and linked through a belt, and the first synchronizing wheel 54 is arranged between the limit bearings 51 and fixed on the hollow main shaft 5, so that the hollow main shaft 5 is not easy to deviate under the pull of the belt.

Optimally, the outer diameters of the first synchronizing wheel 54 and the second synchronizing wheel 55 are the same, so that the first synchronizing wheel 54 can synchronously rotate for one circle when the second synchronizing wheel 55 rotates for one circle, the rotation quantity of the first synchronizing wheel 54 is convenient to control, the embodiment sets one circle of rotation of a pipe as a procedure, and when the hob 21 is pressed and clung to the pipe, the hob 21 can rotate in a driven way along with the rotation of the pipe to roll ribs.

Preferably, an abutting part 57 for abutting against the pipe is arranged on the inner side of the reducing part 52, and the outer diameter of the abutting part 57 is larger than that of the pipe to be rolled. The size of the abutting part 57 is larger than that of the pipe, so that the pipe can be abutted on the abutting part 57, and the positioning effect is achieved.

As shown in fig. 1 and 2, a pushing cylinder 6 is also fixedly arranged on the frame 1, an output shaft of the pushing cylinder 6 is concentric with the hollow main shaft 5, a feeding seat 61 is sleeved on the output shaft of the pushing cylinder 6, and the feeding seat 61 can be pulled out along the length direction for a certain distance.

Specifically, the pushing cylinder 6 is used for pushing the pipe to be rolled to the abutting part 57, the feeding seat 61 is arranged on the output shaft of the pushing cylinder 6, and the output shaft of the cylinder is rotatable, so that the pipe is guaranteed not to be influenced to rotate after being pushed in place, the pushing seat can be pulled out a certain distance in the length direction until the pipe is inserted, and meanwhile, the other end of the pushing seat is sleeved on the reducing part 52, so that preliminary discharging is realized.

The specific working principle is as follows: one end of the pipe is sleeved on the hollow main shaft 5, the other end of the pipe is inserted into the pulled-out feeding seat 61 to form simple feeding preparation, when the pipe is in operation, the output shaft of the pushing cylinder 6 extends out to offset the idle distance pulled out by the feeding seat 61, then the pipe is pushed to the abutting part 57, the first telescopic cylinder 42 works to pull out the solid shaft 4, the conical part 43 gradually enters the variable diameter part 52 to expand the variable diameter part 52, the variable diameter part 52 is circumferentially abutted against the inner wall of the pipe to realize fixation, at the moment, the second telescopic cylinder 22 extends out to the hob 21 to contact and press the pipe, then the main motor 56 works to drive the hollow main shaft 5 to rotate, so that the pipe is driven to rotate by the hob 21 in pressing contact when the pipe rotates, the rolling bar processing of the pipe is realized, and the second synchronous wheel 55 of the output shaft of the main motor 56 stops after rotating for one circle, and the rolling bar is completed. Then the output shaft of the first telescopic cylinder 42 pushes the solid shaft 4, the reducing part 52 is reduced, the pushing cylinder 6 acts on the output shaft to pull back, and the pushing seat moves towards the pushing cylinder 6, so that the rolled tube can be removed.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides an interior inflation formula rolls muscle machine, includes frame (1), frame (1) on be equipped with and roll muscle formation structure (2), its characterized in that, frame (1) on still be equipped with interior inflation location structure (3), interior inflation location structure (3) wait to roll the inside swell of pipe of muscle and form the interference type spacing cooperation of circumference with the pipe.

2. The internal expanding type rib rolling machine according to claim 1, wherein the internal expanding positioning structure (3) comprises a solid shaft (4) and a hollow main shaft (5), the solid shaft (4) is arranged in the hollow main shaft (5) in a penetrating mode, the hollow main shaft (5) is rotationally connected to the frame (1) through a limiting bearing (51), and the solid shaft (4) is connected with a first telescopic unit (41) for driving the solid shaft to move in the length direction.

3. An internal expanding type rib rolling machine according to claim 2, wherein the end part of the hollow main shaft (5) comprises a variable diameter part (52) which can expand in diameter and has a reduced restoration trend, the variable diameter part (52) comprises a plurality of circumferentially distributed grooves (53), and the outer diameter of the variable diameter part (52) is smaller than the inner diameter of a pipe to be rolled when the variable diameter part (52) is not expanded.

4. An internal expanding type rib rolling machine according to claim 3, wherein the end part of the solid shaft (4) comprises a conical part (43), the outer end of the conical part (43) is larger than the inner end, and the diameter of the outermost end of the conical part (43) is larger than the inner diameter of the reducing part (52).

5. The internal expanding type rib rolling machine according to claim 4, wherein the first telescopic unit (41) comprises a first telescopic cylinder (42), the first telescopic cylinder (42) is fixed on the frame (1), and the solid shaft (4) is fixedly connected with an output shaft of the first telescopic cylinder (42).

6. The internal expanding type rib rolling machine according to claim 1, wherein the rib rolling forming structure (2) comprises a second telescopic cylinder (22) and a hob (21) for rolling ribs, the second telescopic cylinder (22) is fixed on the frame (1) through a cylinder seat (23), the hob (21) is rotationally connected to an output shaft of the second telescopic cylinder (22) through a connecting seat (24), and a limiting rod (25) for limiting relative rotation is arranged between the cylinder seat (23) and the connecting seat (24).

7. The internal expanding type rib rolling machine according to claim 2, wherein a first synchronous wheel (54) is fixedly arranged on the hollow main shaft (5), the first synchronous wheel (54) is synchronously connected with an output shaft of a main motor (56) in a linkage manner, and the main motor (56) is fixedly arranged on the frame (1).

8. The internal expanding type rib rolling machine according to claim 7, wherein the limit bearings (51) are at least two and concentric, and the first synchronous wheel (54) is arranged between the limit bearings (51).

9. An internal expanding type rib rolling machine according to any one of claims 3 to 5, wherein an abutting portion (57) for abutting against a pipe is arranged on the inner side of the reducing portion (52), and the outer diameter of the abutting portion (57) is larger than that of the pipe to be rolled.

10. The internal expanding type rib rolling machine according to any one of claims 2 to 5, 7 and 8, wherein a pushing cylinder (6) is further fixedly arranged on the frame (1), an output shaft of the pushing cylinder (6) is concentric with the hollow main shaft (5), a feeding seat (61) is sleeved on an output shaft of the pushing cylinder (6), and the feeding seat (61) can be pulled out for a certain distance along the length direction.