CN217319303U

CN217319303U - Flaring device for PVC (polyvinyl chloride) plastic pipe

Info

Publication number: CN217319303U
Application number: CN202220070543.0U
Authority: CN
Inventors: 陈銛宇
Original assignee: Jiangsu Yuyu Plastic Machinery Technology Co ltd
Current assignee: Jiangsu Yuyu Plastic Machinery Technology Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-08-30
Anticipated expiration: 2032-01-11

Abstract

The utility model belongs to the technical field of the PVC plastic tubing production technique and specifically relates to a PVC plastic tubing flaring device. The PVC plastic pipe flaring device comprises an outer frame, wherein a negative pressure device and a mold core are arranged in the outer frame, the negative pressure device is communicated with the mold core through a pipeline, an air hole communicated with the pipeline is formed in the surface of the mold core, a mold core fixing frame is arranged at the tail end of the mold core, a material pushing cylinder is arranged on the mold core fixing frame, and the material pushing cylinder is fixed on the outer frame. When the flaring device for the PVC plastic pipe is used, the end part of the pipe is heated through external heating equipment, and finally the flaring operation is completed through the flaring device, so that the operations of heating and repeatedly cooling a flaring mold core are avoided, the service life of the mold core is effectively prolonged, and the flaring operation efficiency of the pipe is improved.

Description

Flaring device for PVC (polyvinyl chloride) plastic pipe

Technical Field

The utility model belongs to the technical field of the PVC plastic tubing production technique and specifically relates to a PVC plastic tubing flaring device.

Background

A flaring machine for large-diameter (more than 1000mm in diameter) PVC plastic pipe is disclosed in Chinese invention patent (application number: 201510673557.6, entitled as flaring device and method for PVC-O pipe) under some occasions, and its main flaring mode is to insert heated core into pipe, and to utilize the heat of core to soften and flare plastic pipe, so that the core needs to be cooled in demoulding stage, and has higher temperature, so that the cooling process is longer, and the aging of core can be accelerated by switching between high temperature and low temperature for long time.

In view of the above-mentioned drawbacks, the designer actively makes research and innovation to create a flaring device for PVC plastic pipes, so that the flaring device has industrial application value.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a PVC plastic tubing flaring device.

The utility model discloses a PVC plastic tubing flaring device, including outer frame, install negative pressure device and mold core in the outer frame, negative pressure device communicates through pipeline and mold core, and the surface of mold core has the gas pocket that communicates with the pipeline, and the tail end of mold core is the mold core mount, installs on the mold core mount and pushes away the material cylinder, pushes away the material cylinder and fixes on outer frame.

Further, the negative pressure device comprises a vacuum pump for vacuumizing, and the vacuum pump is further connected with an air storage tank through a pipeline.

Furthermore, the front end of the mold core is a front mold section smaller than the outer diameter of the mold core, and the transition stage of the front mold section and the mold core is an inclined conical structure.

Furthermore, the middle part of the mold core 3 is provided with an inwards concave rubber ring groove.

Furthermore, a spraying frame is further installed on the outer frame, a spray head is installed on the spraying frame through a pipeline, the spray head is connected to the water supply tank through a pipeline, and the spraying frame is located on the outer ring of the mold core.

Furthermore, the outer ring of the mold core is provided with a material returning ring, the material returning ring is fixedly connected with the tail end of the material returning cylinder, an ejector rod of the material returning cylinder is fixedly connected with a material returning support plate, and the material returning support plate is fixed on the outer frame.

Furthermore, a roller support is fixed below the mold core through bolts, rollers are movably mounted on the roller support through shafts, roller guide rails are fixed on the outer frame through bolts, and the rollers are arranged on the roller guide rails.

Furthermore, guide rods for connecting the upper end and the lower end of the outer frame are mounted on two sides of the end portion of the outer frame, an upper pressing ring and a lower pressing ring are mounted on the upper end and the lower end of each guide rod respectively, the upper pressing ring and the lower pressing ring form a circular ring after being closed, the upper pressing ring is fixedly connected with an ejector rod of a lower pressing cylinder mounted at the upper end of the outer frame, and the lower pressing ring is fixedly connected with an ejector rod of an upper ejector cylinder mounted at the upper end of the outer frame.

By the scheme, the invention at least has the following advantages: when the flaring device for the PVC plastic pipe is used, the end part of the pipe is heated through external heating equipment, and finally the flaring operation is completed through the flaring device, so that the operations of heating and repeatedly cooling a flaring mold core are avoided, the service life of the mold core is effectively prolonged, and the flaring operation efficiency of the pipe is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate a certain embodiment of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of fig. 1 of the present invention;

fig. 3 is a partial schematic view of fig. 1 of the present invention;

fig. 4 is a schematic structural view of the end of the lower half of fig. 1;

fig. 5 is a schematic view of the usage state of the present invention;

in the drawing, the device comprises an outer frame 1, a negative pressure device 2, a negative pressure device 3, a mold core 4, an air hole 5, a mold core fixing frame 6, a material pushing cylinder 7, a rubber ring groove 8, a spraying frame 9, a spray head 10, a material returning ring 11, a material returning cylinder 12, a material returning support plate 13, a roller support 14, a roller 15, a roller guide rail 16, a guide rod 17, an upper jacking cylinder 18, a lower pressing ring 19, an upper pressing ring 20 and a lower pressing cylinder.

2-1 parts of vacuum pump, 2-2 parts of gas storage tank;

3-1 and a front mould section.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1-4, a PVC plastic pipe flaring device according to a preferred embodiment of the present invention, including outer frame 1, install negative pressure device 2 and mold core 3 in the outer frame 1, negative pressure device 2 communicates with mold core 3 through the pipeline, and there is gas pocket 4 with the pipeline intercommunication on the surface of mold core 3, and the tail end of mold core 3 is mold core mount 5, installs on the mold core mount 5 and pushes away material cylinder 6, pushes away material cylinder 6 and fixes on outer frame 1.

The PVC plastic pipe flaring device is characterized in that a pipe to be flared is placed in an outer frame 1 (at the moment, the pipe is in a state after being heated through a preheating operation in advance, the heating stations are two frame-shaped stations above a displacement negative pressure device 2 shown in figure 5 and a preset heating station, the pipe can be continuously heated in a circulating operation process, and the flaring station is not required to be finished for a long time), then a mold core 3 moves forwards under the pushing of a pushing cylinder 6 to push the mold core 3 into the pipe, then air between the mold core 3 and the pipe is sucked out after the negative pressure device 2 is communicated with the mold core 3, so that a vacuum negative pressure state is formed between the pipe and the mold core 3, the pipe is pressed on the outer side of the mold core 3 through external atmospheric pressure, and the flaring precision of the pipe is guaranteed, after the flaring is finished, the material pushing cylinder 6 drives the mold core 3 to reset, and the flaring operation of a pipe is finished.

This application here aims at the structure of request protection flaring position, does not make the protection to the structure of heating station and prescribes a limit, therefore any structure that can carry out heating operation to the tip of tubular product all is applicable in this application, adopt conventional electrothermal heating can, the electrothermal heating controllability is high, and stability is good, and the structure is ripe, and the technical barrier is not gone on, also can be synchronous heat in the inside and the outer wall of tubular product two-way, further improve the efficiency of heating.

The heating part is preferably of a ring structure, and is positioned on the outer ring of the outer wall of the pipe to heat.

Further, the negative pressure device 2 comprises a vacuum pump 2-1 for vacuumizing, and the vacuum pump 2-1 is also connected with an air storage tank 2-2 through a pipeline.

After the vacuum pump 2-1 works, the air hole 4 at the position of the mold core 3 is communicated through a pipeline, redundant air is sucked into the air storage tank 2-2, vacuum negative pressure operation is completed, and air leakage operation is performed through the pressure release valve after the air in the air storage tank 2-2 is full.

Further, the front end of the mold core 3 is a front mold section 3-1 smaller than the outer diameter of the mold core 3, and the transition stage of the front mold section 3-1 and the mold core 3 is an inclined conical structure.

The front end of the mold core 3 is a front mold section 3-1 with a smaller diameter, so that the mold core 3 can be conveniently inserted into the pipe, and flaring operation is convenient.

Furthermore, the middle part of the mold core 3 is provided with an inwards concave rubber ring groove 7.

The rubber ring is arranged in the rubber ring groove 7, the rubber ring in the rubber ring groove 7 is just propped against the end part of the pipe after the mold core 3 moves forwards, the pipe is blocked by the rubber ring, the pipe wraps the front mold section 3-1 of the mold core after the front mold section 3-1 of the mold core 3 performs flaring operation, a relatively closed space is formed from the front mold section 3-1 to the rubber ring, the space is vacuumized when vacuumizing operation is performed through the negative pressure device 2, and finally the pipe wraps the mold core 3 under the action of the atmospheric pressure, so that the precision of the pipe after flaring is guaranteed.

Further, still install spray rack 8 on outer frame 1, install shower nozzle 9 through the pipe installation on spray rack 8, shower nozzle 9 passes through the pipe connection on the feed tank, and spray rack 8 is located the outer lane of mold core 3.

The mechanism of the feed tank and the water pump that spray 8 connections provides the operation of cooling down that sprays, the water pump is settled in the feed tank, the water of water pump in with the feed tank passes through the pipeline and carries on spray 8, open the shower nozzle 9 of correspondence on spray 8 after the flaring operation finishes, make the cooling water spraying to the outer wall of tubular product on, accomplish the operation of cooling down, the feed tank is located the bottom of whole outer frame 1, its structure can set up great, can collect spray remaining cooling water afterwards, recycle, the feed tank is the opening form, the cooling water can directly flow in.

Furthermore, a material returning ring 10 is arranged on the outer ring of the mold core 3, the material returning ring 10 is fixedly connected with the tail end of a material returning cylinder 11, an ejector rod of the material returning cylinder 11 is fixedly connected with a material returning support plate 12, and the material returning support plate 12 is fixed on the outer frame 1.

In order to facilitate the material returning operation of the pipe, the whole material returning ring 10 is pushed forwards by extending the material pushing cylinder 11, the material returning ring 10 is pushed against the end part of the pipe, the pipe is finally ejected out, the material returning is convenient, and the material returning cylinder 11 drives the material returning ring 10 to reset after the material returning is finished.

Further, a roller bracket 13 is fixed below the mold core fixing frame 5 through bolts, rollers 14 are movably mounted on the roller bracket 13 through shafts, a roller guide rail 15 is fixed on the outer frame 1 through bolts, and the rollers 14 are mounted on the roller guide rail 15.

The mold cores 3 are mounted on roller rails 15 by rollers 14 for forward and backward movement.

Further, guide rods 16 connecting the upper end and the lower end of the outer frame 1 are mounted on both sides of the end portion of the outer frame 1, an upper pressing ring 19 and a lower pressing ring 18 are mounted on the upper end and the lower end of each guide rod 16 respectively, the upper pressing ring 19 and the lower pressing ring 18 form a circular ring shape after being closed, the upper pressing ring 19 is fixedly connected with an ejector rod of a lower pressing cylinder 20 mounted at the upper end of the outer frame 1, and the lower pressing ring 18 is fixedly connected with an ejector rod of an upper ejector cylinder 17 mounted at the upper end of the outer frame 1.

In order to clamp and limit the pipe at the end of the whole device, a lower pressing cylinder 20 and an upper jacking cylinder 17 are respectively arranged above and below the outer frame 1, the lower pressing cylinder 20 and the upper jacking cylinder 17 are respectively provided with an upper pressing ring 19 and a lower pressing ring 18, the upper pressing ring 19 and the lower pressing ring 18 limit the up-and-down movement direction of the upper pressing ring 19 and the lower pressing ring 18 through a guide rod 16, the upper pressing ring 19 and the lower pressing ring 18 are finally closed inwards under the driving of the lower pressing cylinder 20 and the upper jacking cylinder 17, the clamping operation on the outer wall of the pipe is completed, and the fixing is completed.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a PVC plastic tubing flaring device, includes outer frame (1), its characterized in that: the negative pressure device (2) and the mold core (3) are installed in the outer frame (1), the negative pressure device (2) is communicated with the mold core (3) through a pipeline, an air hole (4) communicated with the pipeline is formed in the surface of the mold core (3), the tail end of the mold core (3) is a mold core fixing frame (5), a material pushing cylinder (6) is installed on the mold core fixing frame (5), and the material pushing cylinder (6) is fixed on the outer frame (1).

2. The flaring device of PVC plastic pipes according to claim 1, characterized in that: the negative pressure device (2) comprises a vacuum pump (2-1) for vacuumizing, and the vacuum pump (2-1) is also connected with the gas storage tank (2-2) through a pipeline.

3. The flaring device of PVC plastic pipes according to claim 1, characterized in that: the front end of the mold core (3) is a front mold section (3-1) smaller than the outer diameter of the mold core (3), and the transition stage of the front mold section (3-1) and the mold core (3) is an inclined conical structure.

4. The flaring device of PVC plastic pipes according to claim 1, characterized in that: the middle part of the mold core (3) is provided with an inwards concave rubber ring groove (7).

5. The flaring device of PVC plastic pipes according to claim 1, characterized in that: the outer frame (1) is also provided with a spray frame (8), the spray frame (8) is provided with a spray head (9) through a pipeline, the spray head (9) is connected to the water supply tank through a pipeline, and the spray frame (8) is positioned on the outer ring of the mold core (3).

6. The flaring device of PVC plastic pipes according to claim 1, characterized in that: the outer ring of the mold core (3) is provided with a material returning ring (10), the material returning ring (10) is fixedly connected with the tail end of a material returning cylinder (11), an ejector rod of the material returning cylinder (11) is fixedly connected with a material returning support plate (12), and the material returning support plate (12) is fixed on the outer frame (1).

7. The flaring device of PVC plastic pipes according to claim 1, characterized in that: a roller support (13) is fixed below the mold core fixing frame (5) through bolts, rollers (14) are movably mounted on the roller support (13) through shafts, a roller guide rail (15) is fixed on the outer frame (1) through bolts, and the rollers (14) are placed on the roller guide rail (15).

8. The flaring device of PVC plastic pipes according to claim 1, characterized in that: guide rods (16) connected with the upper end and the lower end of the outer frame (1) are mounted on two sides of the end portion of the outer frame (1), an upper pressing ring (19) and a lower pressing ring (18) are mounted on the upper end and the lower end of each guide rod (16) respectively, the upper pressing ring (19) and the lower pressing ring (18) form a circular ring shape after being closed, the upper pressing ring (19) is fixedly connected with an ejector rod of a lower pressing cylinder (20) mounted at the upper end of the outer frame (1), and the lower pressing ring (18) is fixedly connected with an ejector rod of an upper ejecting cylinder (17) mounted at the upper end of the outer frame (1).