CN111715797A

CN111715797A - Internal expanding three-segment expanding pipe

Info

Publication number: CN111715797A
Application number: CN202010712791.6A
Authority: CN
Inventors: 丰文军
Original assignee: Suzhou Fengwang Industry And Trade Co ltd
Current assignee: Suzhou Fengwang Industry And Trade Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-09-29

Abstract

The invention discloses an internal expanding three-petal expanding pipe, and relates to the technical field of circular pipes. The invention comprises a rotating device, a push-pull device, a fixing device and an extrusion device, wherein the rotating device is arranged on the ground, the push-pull device is arranged on one side of the rotating device, the fixing device is arranged on the other side of the rotating device, the extrusion device is arranged at the top of the fixing device, the rotating device comprises a bottom plate, the bottom plate is arranged on the ground, a top plate is arranged at the top of the bottom plate, a fixing rod is arranged in the top plate, and the fixing rod is fixedly connected with the top plate, the pipe expanding rod can circularly rotate forwards and backwards when extruding the circular pipe, can enter the circular pipe more easily when expanding the circular pipe, avoids the situation that the circular pipe is expanded by the single pipe expanding rod, and can reduce the damage to the circular pipe when the efficiency of expanding the circular pipe by the pipe expanding rod is improved.

Description

Internal expanding three-segment expanding pipe

Technical Field

The invention belongs to the technical field of round pipes, and particularly relates to an internal expanding type three-petal expanding pipe.

Background

The hot expanded steel pipe forming process adopts special pipe expander, core mold and heating device to make the blank on the mold move forward under the push of the pushing machine and heated and expanded to form. The diameter of the adopted pipe blank is smaller than that of the pipe to be obtained, the deformation process of the blank is controlled by the core die, the metal compressed at the inner arc flows, and other parts thinned due to expanding are compensated, so that the hot-expanded steel pipe with uniform wall thickness is obtained. The forming process of the heat expanded steel pipe has the characteristics of attractive appearance, uniform wall thickness and continuous operation, and is suitable for mass production, so the forming process becomes a main forming method of carbon steel, alloy steel and stainless steel pipe expansion, however, the existing internal expansion pipe expansion device has certain defects when in use, the existing internal expansion pipe expansion device only simply pushes the pipe expansion rod to carry out internal expansion on the pipe when in use, the pipe expansion mode of singly pushing the pipe expansion rod to carry out internal expansion points on the pipe is easy to damage the pipe, the waste of the pipe is caused, meanwhile, the fixing device cannot be correspondingly adjusted according to the size of the pipe when the pipe is fixed, and the application range is limited.

Disclosure of Invention

The invention aims to provide an internal expanding type three-petal expanding pipe, which solves the existing problems: the existing internal expansion pipe expanding device only performs internal expansion on a round pipe through simply pushing a pipe expanding rod, easily damages the round pipe, and can not make corresponding position adjustment according to the size of the round pipe when fixing the round pipe, so that the application range is limited.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an internal expanding type three-petal expanding tube which comprises a rotating device, a push-pull device, a fixing device and an extruding device, wherein the rotating device is arranged on the ground, the push-pull device is arranged on one side of the rotating device, the fixing device is arranged on the other side of the rotating device, and the extruding device is arranged at the top of the fixing device.

Further, the rotating device comprises a bottom plate, the bottom plate is arranged on the ground, a top plate is arranged at the top of the bottom plate, a fixed rod is arranged in the top plate and fixedly connected with the top plate, a movable plate is arranged above the bottom plate, the movable plate penetrates through the fixed rod and is in sliding connection with the fixed rod, a tube expanding rod is arranged in the movable plate and is in rotating connection with the movable plate, a limiting plate is arranged on the surface of the movable plate, an annular groove is arranged in the limiting plate, a rotating rod is arranged on the surface of the tube expanding rod, the rotating rod extends into the annular groove and is in rotating connection with the annular groove, an external gear is arranged on the surface of the tube expanding rod, a side plate is arranged on the surface of the movable plate, a fixed plate is arranged in the side plate, a hollow, the hollow plate is internally provided with first teeth, the top of the hollow plate is provided with a rack, the rack is arranged below an external gear, the rack is meshed with the external gear, a first driving motor is arranged in the side plate, the output end of the first driving motor extends into the hollow plate, the surface of the output end of the first driving motor is provided with second teeth which are distributed at equal angles, the distribution angle is 120 degrees, and the second teeth are meshed with the first teeth.

Furthermore, the push-pull device comprises a fluted disc, the fluted disc is arranged at the top of the bottom plate, a second driving motor is arranged at the top of the bottom plate, a driving gear is arranged at the output end of the second driving motor, the driving gear extends into the fluted disc, a driven gear is arranged in the fluted disc, the fluted disc and the driving gear are both meshed with the driven gear, a sliding plate is arranged on the outer surface of the fluted disc, a round rod is arranged on the surface of the driven gear, the round rod extends into the sliding plate and is in sliding connection with the sliding plate, a connecting rod is arranged on the surface of the sliding plate, and the connecting rod is fixedly connected with.

Further, fixing device includes end box, end box setting is at the upper branch of bottom plate, the top of bottom plate is provided with the riser, be provided with the threaded rod in the riser, the tip of threaded rod is provided with the carousel.

Furthermore, the surface of the threaded rod is in threaded connection with a threaded sleeve, the thread turning directions of the two ends of the threaded rod are opposite, a three-piece pipe is arranged in the bottom box, and the threaded sleeve extends into the bottom box and is abutted to the three-piece pipe.

Further, extrusion device includes electric telescopic handle, electric telescopic handle sets up the top at the bottom plate, electric telescopic handle's bottom is provided with the top cap.

Further, the inner surface of top cap is provided with the marble, the top cap sets up the top at the end box, the marble offsets with three lamella pipes.

Furthermore, the marble is made of rubber.

The invention has the following beneficial effects:

1. when the rotating device and the push-pull device are arranged to expand the circular tube, the pipe expanding rod can extrude the circular tube and can rotate forwards and backwards circularly, when the pipe expanding rod expands the circular tube, the pipe expanding rod can enter the circular tube more easily, the phenomenon that the pipe expanding rod is pushed to expand the circular tube only singly is avoided, the expansion efficiency of the pipe expanding rod on the circular tube can be improved, and meanwhile, the damage to the circular tube can be reduced.

2. The fixing device and the extruding device are arranged to fix the circular tube, the fixing device is suitable for circular tubes of different specifications and models, the use range of fixing the circular tubes can be enlarged, the top cover and the marbles are extruded by the electric push rod to fully fix the circular tubes, and the surfaces of the circular tubes can be protected from being damaged by the marbles.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a connection structure of a driving gear, a driven gear and a fluted disc according to the present invention;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view of the invention at C of FIG. 1;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

fig. 6 is an enlarged view of the invention at D in fig. 5.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a rotating device; 101. a base plate; 102. a top plate; 103. fixing the rod; 104. moving the plate; 105. a pipe expanding rod; 106. a limiting plate; 107. an annular groove; 108. a rotating rod; 109. an external gear; 1010. a side plate; 1011. a first drive motor; 1012. a fixing plate; 1013. a hollow slab; 1014. a rack; 1015. a first tooth; 1016. a second tooth; 2. a push-pull device; 201. a second drive motor; 202. a fluted disc; 203. a driven gear; 204. a driving gear; 205. a connecting rod; 206. a slide plate; 207. a round bar; 3. a fixing device; 301. a bottom case; 302. a vertical plate; 303. a three-petal tube; 304. a threaded sleeve; 305. a threaded rod; 306. a turntable; 4. an extrusion device; 401. an electric telescopic rod; 402. a top cover; 403. and (4) bouncing balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention is an internal expanding three-petal expanding tube, which comprises a rotating device 1, a push-pull device 2, a fixing device 3 and an extruding device 4, wherein the rotating device 1 is arranged on the ground, the push-pull device 2 is arranged at one side of the rotating device 1, the fixing device 3 is arranged at the other side of the rotating device 1, and the extruding device 4 is arranged at the top of the fixing device 3.

The rotating device 1 comprises a bottom plate 101, the bottom plate 101 is arranged on the ground, a top plate 102 is arranged at the top of the bottom plate 101, a fixed rod 103 is arranged in the top plate 102, the fixed rod 103 is fixedly connected with the top plate 102, a moving plate 104 is arranged above the bottom plate 101, the moving plate 104 penetrates through the fixed rod 103 and is in sliding connection with the fixed rod 103, a pipe expanding rod 105 is arranged in the moving plate 104, the pipe expanding rod 105 is in rotating connection with the moving plate 104, a limit plate 106 is arranged on the surface of the moving plate 104, an annular groove 107 is arranged in the limit plate 106, a rotating rod 108 is arranged on the surface of the pipe expanding rod 105, the rotating rod 108 extends into the annular groove 107 and is in rotating connection with the annular groove 107, an external gear 109 is arranged on the surface of the pipe expanding rod 105, a side plate 1010 is, a first tooth 1015 is arranged in the hollow plate 1013, a rack 1014 is arranged at the top of the hollow plate 1013, the rack 1014 is arranged below the external gear 109, the rack 1014 is engaged with the external gear 109, a first driving motor 1011 is arranged in the side plate 1010, the output end of the first driving motor 1011 extends into the hollow plate 1013, a second tooth 1016 which is distributed at equal angles and has a distribution angle of 120 degrees is arranged on the surface of the output end of the first driving motor 1011, the second tooth 1016 is engaged with the first tooth 1015, the rack 1014 drives the external gear 109 to rotate positively and negatively when moving horizontally and circularly, thereby driving the tube expanding rod 105 to rotate forwards and backwards, the three-petal tube 303 can be better expanded through the forward and backward rotation of the tube expanding rod 105, the annular groove 107 has a limiting function on the rotating rod 108, and the pipe expanding rod 105 can not only rotate in the annular groove 107, but also the annular groove 107 has a supporting function on the rotating rod 108 and the pipe expanding rod 105 when the pipe expanding rod 105 is extruded.

The push-pull device 2 comprises a fluted disc 202, the fluted disc 202 is arranged at the top of the bottom plate 101, a second driving motor 201 is arranged at the top of the bottom plate 101, a driving gear 204 is arranged at the output end of the second driving motor 201, the driving gear 204 extends into the fluted disc 202, a driven gear 203 is arranged in the fluted disc 202, both the fluted disc 202 and the driving gear 204 are meshed with the driven gear 203, a sliding plate 206 is arranged on the outer surface of the fluted disc 202, a round rod 207 is arranged on the surface of the driven gear 203, the round rod 207 extends into the sliding plate 206 and is in sliding connection with the sliding plate 206, a connecting rod 205 is arranged on the surface of the sliding plate 206, the connecting rod 205 is fixedly connected with a side plate 1010, the push-pull device 2 has a pushing effect on the pipe expanding rod 105, and pushes the, after the expansion of the three-petal pipe 303 is completed, the pipe expanding rod 105 is drawn out from the three-petal pipe 303 through the circular movement of the connecting rod 205.

Fixing device 3 includes end box 301, and end box 301 sets up the last branch at bottom plate 101, and the top of bottom plate 101 is provided with riser 302, is provided with threaded rod 305 in the riser 302, and the tip of threaded rod 305 is provided with carousel 306, drives threaded rod 305 and rotates when carousel 306 rotates, makes threaded sleeve 304 on threaded rod 305 surface remove in opposite directions, and then fixes three lamella pipes 303, prevents that three lamella pipes 303 from taking place to rotate when expanding, influences the expansion quality of three lamella pipes 303.

The surface threaded connection of threaded rod 305 has threaded sleeve 304, and the screw thread direction of screwing at threaded rod 305 both ends is opposite, is provided with three lamella pipes 303 in the end box 301, and threaded sleeve 304 extends to in end box 301 and offsets with three lamella pipes 303, because the screw thread direction of screwing of threaded rod 305 is opposite, and threaded sleeve 304 moves in opposite directions when rotating threaded rod 305, presss from both sides tight three lamella pipes 303, prevents that three lamella pipes 303 from taking place to rotate when expanding three lamella pipes 303.

The extrusion device 4 comprises an electric telescopic rod 401, the electric telescopic rod 401 is arranged above the bottom plate 101, a top cover 402 is arranged at the bottom of the electric telescopic rod 401, and the electric telescopic rod 401 extrudes the top cover 402 and the bottom box 301 to fix the three-section pipe 303.

The inner surface of top cap 402 is provided with marble 403, top cap 402 sets up the top at bottom box 301, and marble 403 offsets with three lamella pipe 303, and the used material of marble 403 is rubber, and marble 403 offsets with three lamella pipe 303 and has spacing effect to three lamella pipe 303, and marble 403 is the rubber material can make close laminating of marble 403 at the surface of three lamella pipe 303, carries on spacingly to three lamella pipe 303, prevents that three lamella pipe 303 from taking place to remove.

One specific application of this embodiment is: the three-petal tube 303 is placed in the bottom box 301, then the rotating disc 306 is rotated to enable the rotating disc 306 to drive the threaded rod 305 to rotate, as the thread rotating directions at the two ends of the threaded rod 305 are opposite, when the threaded rod 305 rotates, the two thread sleeves 304 are driven to move oppositely, the three-petal tube 303 is propped against through the thread sleeves 304, then the switch of the electric telescopic rod 401 is opened, the electric telescopic rod 401 drives the top cover 402 to move downwards, the elastic ball 403 at the bottom of the top cover 402 is propped against the three-petal tube 303, the fixing of the three-petal tube 303 is completed, then the switches of the first driving motor 1011 and the second driving motor 201 are opened, when the second driving motor 201 works, the driving gear 204 is driven to rotate, the driven gear 203 is driven to rotate in the fluted disc 202 through the rotation of the driving gear 204, the round rod 207 is driven to rotate when the driven gear 203 rotates, the sliding plate 206 is driven to circularly reciprocate through the rotation of the round rod 207, when the moving plate 104 moves towards the direction close to the three-valve pipe 303, the pipe expanding rod 105 expands the three-valve pipe 303, when the first driving motor 1011 works, the first teeth 1015 and the second teeth 1016 are meshed, the hollow plate 1013 can be driven to circularly slide on the surface of the side plate 1010 in a reciprocating mode, the rack 1014 can be driven to slide, the rack 1014 is meshed with the external gear 109, the external gear 109 and the pipe expanding rod 105 are driven to rotate in a positive and negative circulating mode when the rack 1014 circularly moves, the pipe expanding rod 105 can also rotate in a positive and negative rotating mode when the three-valve pipe 303 is extruded, the round pipe can be expanded better, and damage to the round pipe is avoided.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an internal expanding formula three-petal expander, includes rotary device (1), push-and-pull device (2), fixing device (3) and extrusion device (4), its characterized in that: the rotating device (1) is arranged on the ground, the push-pull device (2) is arranged on one side of the rotating device (1), the fixing device (3) is arranged on the other side of the rotating device (1), and the extruding device (4) is arranged at the top of the fixing device (3).

2. The internal expanding three-petal expanding pipe of claim 1, wherein the rotating device (1) comprises a bottom plate (101), the bottom plate (101) is disposed on the ground, a top plate (102) is disposed on the top of the bottom plate (101), a fixing rod (103) is disposed in the top plate (102), the fixing rod (103) is fixedly connected with the top plate (102), a moving plate (104) is disposed above the bottom plate (101), the moving plate (104) penetrates through the fixing rod (103) and is slidably connected with the fixing rod (103), an expanding rod (105) is disposed in the moving plate (104), the expanding rod (105) is rotatably connected with the moving plate (104), a limiting plate (106) is disposed on the surface of the moving plate (104), an annular groove (107) is disposed in the limiting plate (106), and a rotating rod (108) is disposed on the surface of the expanding rod (105), the rotating rod (108) extends into the annular groove (107) and is rotatably connected with the annular groove (107), an external gear (109) is arranged on the surface of the pipe expanding rod (105), a side plate (1010) is arranged on the surface of the moving plate (104), a fixed plate (1012) is arranged in the side plate (1010), a hollow plate (1013) is arranged at the top of the fixed plate (1012), the hollow plate (1013) is slidably connected with the fixed plate (1012), a first tooth (1015) is arranged in the hollow plate (1013), a rack (1014) is arranged at the top of the hollow plate (1013), the rack (1014) is arranged below the external gear (109), the rack (1014) is meshed with the external gear (109), a first driving motor (1011) is arranged in the side plate (1010), and the output end of the first driving motor (1011) extends into the hollow plate (1013), the surface of the output end of the first driving motor (1011) is provided with second teeth (1016) distributed at equal angles, the distribution angle is 120 degrees, and the second teeth (1016) are meshed with the first teeth (1015).

3. The internal expanding three-petal expanding pipe according to claim 1, wherein the push-pull device (2) comprises a fluted disc (202), the fluted disc (202) is disposed on the top of the base plate (101), the top of the base plate (101) is provided with a second driving motor (201), the output end of the second driving motor (201) is provided with a driving gear (204), the driving gear (204) extends into the fluted disc (202), a driven gear (203) is disposed in the fluted disc (202), both the fluted disc (202) and the driving gear (204) are engaged with the driven gear (203), the outer surface of the fluted disc (202) is provided with a sliding plate (206), the surface of the driven gear (203) is provided with a round rod (207), the round rod (207) extends into the sliding plate (206) and is slidably connected with the sliding plate (206), the surface of the sliding plate (206) is provided with a connecting rod (205), the connecting rod (205) is fixedly connected with the side plate (1010).

4. The internal expanding three-petal expanding pipe as claimed in claim 1, wherein the fixing device (3) comprises a bottom box (301), the bottom box (301) is arranged on the upper part of the bottom plate (101), a vertical plate (302) is arranged on the top of the bottom plate (101), a threaded rod (305) is arranged in the vertical plate (302), and a rotating disc (306) is arranged at the end of the threaded rod (305).

5. An internal expanding three-petal expanding tube as claimed in claim 4, wherein a threaded sleeve (304) is connected to the surface of the threaded rod (305) in a threaded manner, the thread directions of the two ends of the threaded rod (305) are opposite, a three-petal tube (303) is arranged in the bottom box (301), and the threaded sleeve (304) extends into the bottom box (301) and is abutted against the three-petal tube (303).

6. An internal expanding three-petal expanding tube according to claim 1, wherein the extruding device (4) comprises an electric telescopic rod (401), the electric telescopic rod (401) is arranged above the bottom plate (101), and a top cover (402) is arranged at the bottom of the electric telescopic rod (401).

7. An internal expanding three-petal pipe according to claim 6, wherein the inner surface of the top cover (402) is provided with a marble (403), the top cover (402) is arranged on the top of the bottom box (301), and the marble (403) is abutted against the three-petal pipe (303).

8. An internal expanding three-piece expander as claimed in claim 7, wherein said marble (403) is made of rubber.