CN112192742B - Air supply device of radial extruder, air source switching port, radial extruder and processing method - Google Patents

Abstract

A radial extruder air supply device, an air source adapter, a radial extruder and a processing method are provided. The invention relates to concrete pipeline processing equipment, in particular to an improvement on an air supply device of a radial extrusion pipe making machine, a radial extrusion machine comprising the improved air supply device and a working method. The radial extruder air supply device, the air source switching port, the radial extruder and the processing method can adapt to the processing environment of concrete products, can ensure the reliability of air supply in the operation of severe environment, reduce the failure rate and reduce the energy consumption of an air supply head driving cylinder. Including air supply, base, air feed head drive actuating cylinder and air feed head, the air feed head is connected the piston rod end that the air feed head drove actuating cylinder, the air feed head is including air feed head base, air feed head working section and toper head end. The invention has exquisite design, can save air sources and realize the precision control of the air path. The pipe processed by the complete machine and the pipe manufacturing process has good quality and high precision.

Description

Air supply device of radial extruder, air source switching port, radial extruder and processing method

Technical Field

The invention relates to concrete pipeline processing equipment, in particular to improvement of an air supply device of a radial extrusion pipe making machine, a radial extrusion machine comprising the improved air supply device and a working method.

Background

In the seventh and eighties of the last century, vertical pipe-making technologies of macracan corporation, helocortiel corporation and the like were available, and the technologies can greatly improve the processing and manufacturing efficiency of concrete pipes. In the middle of the 80 s, related enterprises in China introduced the technology to manufacture the concrete pipe, but the core technology of the concrete pipe is still not important. Resulting in the technology being stuck until 2010. Most of similar pipes are processed and produced by adopting a core mold vibration technology, the core mold vibration technology can process the pipes meeting the market requirements, but the production period is long, and the processing efficiency is low. In 2010, with the development of domestic infrastructure, the enterprises for manufacturing concrete product processing equipment started the independent research and development work of the project.

At the present stage, the requirements for the concrete pipe in China are obviously changed, namely, the diameter is increasingly large, and the pressure-bearing requirement is increasingly high. This creates a significant challenge for the device manufacturing enterprise. In order to meet the requirements, the reinforcement cage needs to be arranged in the pipeline with high precision, however, the difficulty of positioning the reinforcement cage inside the die is very high, and after all, when the extrusion head performs circumferential wall forming from bottom to top in the forming process, the reinforcement cage arranged on the inner side of the inner wall of the die has large unbalance loading impact force, so that the position deviation of the reinforcement cage is easily caused, and finally a defective product is caused.

Therefore, production enterprises in China provide an innovative technology for positioning the reinforcement cage in the die, and the number of the innovative technology is published as follows: CN102294747A, name: the patent technology of tuber mould provides following technical scheme "including the mould barrel, sets up mold opening device on the mould barrel, and mould barrel lower extreme passes through collet fixing device and fixes the collet in the mould barrel, evenly set up at least three cylinder mounting bracket along mould barrel circumference on the lateral wall of the upper end of mould barrel and the lower extreme respectively, install the cylinder on each cylinder mounting bracket, and the piston rod of each cylinder is directional mould barrel center respectively, install a slice steel sheet on the piston rod of each cylinder, the position that the mould barrel corresponds with each steel sheet sets up a bar groove that can let the steel sheet pass through. When the technology is implemented, an external air source needs to be connected to drive the air cylinder on the die to move forwards and backwards. To solve this problem, the "application No.: 201820362551.6, name: the patent technology of a radial extrusion pipe making machine air supply device' provides a technology for supplying air to an air cylinder on a die from the outside by using a motion butt joint mode. The technical scheme comprises the following steps: comprises a damping plate (31), a side mounting seat (32), a cylinder (33), a cylinder connecting plate (34), a rubber spring (35), a vent plate (36), a fixed stop block (37) and a gas pipe head (38); wherein the side mounting seat (32) is arranged on the side surface of the cylinder (33), and the damping plate (31) is connected to the outer side of the mounting seat (32) through a screw; the air cylinder (33) is provided with an air cylinder rod (331), the air cylinder connecting plate (34) is fixedly connected to one end of the air cylinder rod (331), one end of the rubber spring (35) is connected with the air cylinder connecting plate (34), and the other end of the rubber spring is connected with the vent plate (36); the air pipe head (38) is arranged on the aeration plate (36); the number of the fixed stop blocks (37) is two, the fixed stop blocks are symmetrically arranged on the vent plate (36) up and down, one end of each fixed stop block (37) is connected with a fixed pipe (371) with a pointed head, and the diameter of each fixed pipe (371) is smaller than that of each fixed stop block (37); the length of the tracheal head (38) is slightly greater than the length of the fixed stop (37). The air supply device of the proposal adopts the technical modes of butt joint of a plane air nozzle and positioning of a fixed stop block. In practical application, because the production environment is severe, dust is more, vibration is large, and fixed stop block positioning needs higher precision, in case radial trace offset occurs, butt joint misalignment easily occurs, and the butt joint air tap seal is easy to lose efficacy, resulting in insensitive and inaccurate action of the cage fixing air cylinder on the die when the whole machine works. The technical problem most troubling the field is that because of axial butt joint air supply, no matter in a working feeding state or in a working withdrawing state, the air cylinder (33) needs to always keep the air pressure which is larger than the working feeding/working withdrawing air pressure, otherwise, the air leakage at a butt joint nozzle can be caused by the reaction force caused by the working feeding/working withdrawing air pressure at the butt joint position during working, the working energy consumption of the air cylinder (33) is extremely high, and the high-pressure jacking state of the whole process needs to be kept in the machining process.

In addition, although the air supply device is only a basic whole machine part in the processing process, once the action sensitivity (action time accuracy, speed of driving the inserting plate and other factors) is reduced, firstly, inserting plate 'scars' are remained on the outer wall of the concrete pipe 77 (shown in fig. 18), and if the action sensitivity is low, the product appearance is a problem, and if the action sensitivity is high, the strength of the whole pipe is reduced; secondly, the reinforcement cage 76 inside the concrete pipe 77 is not accurately positioned (not at the designed position in the thickness direction of the pipe), and the strength of the concrete pipe 77 is reduced.

Disclosure of Invention

Aiming at the problems, the invention provides a radial extruder gas supply device, a gas source switching port, a radial extruder and a processing method, wherein the radial extruder gas supply device, the gas source switching port, the radial extruder and the processing method can adapt to the processing environment of concrete products, can ensure the gas supply reliability in the operation in severe environment, reduce the failure rate and reduce the energy consumption of a gas supply head driving cylinder.

The technical scheme of the invention is as follows: the air supply head is connected to the end of a piston rod of the air supply head driving cylinder, and comprises an air supply head base, an air supply head working section and a conical head end;

at least two base radial holes are formed in the base of the gas supply head, and the base radial holes comprise a base radial hole A and a base radial hole B;

the end surface of the air supply head base is provided with at least two base axial holes, and the base axial holes comprise an air supply head axial hole A and an air supply head axial hole B; the axial hole A of the air supply head and the axial hole B of the air supply head are respectively sealed towards the orifices on the end surface of the air supply head base;

at least two working section radial holes are formed in the working section of the gas supply head, and the working section radial holes comprise a working section hole A and a working section hole B;

the gas source comprises a gas source A and a gas source B, and the gas source A is sequentially connected with the radial hole A of the base, the axial hole A of the gas supply head and the hole A of the working section; the air source B is sequentially connected with the base radial hole B, the air supply head axial hole B and the working section hole B;

and working section radial hole ring grooves are formed on the surface of the working section of the gas supply head corresponding to the working section radial holes.

And sealing rings are arranged on the outer sides of the notches of the radial hole ring grooves of the working sections.

And an annular isolation groove is also formed in the surface of the air supply working section between the working section A hole and the working section B hole.

The air source adapter is provided with a columnar body with a middle hole, and the inner diameter of the middle hole is matched with the outer diameter of the working section of the air supply head; an air source adapter A hole and an air source adapter B hole are arranged on the inner wall of the air source adapter,

the axial position of the air source adapter port A hole is matched with the position of the working section radial hole ring groove where the working section A hole is positioned,

and the axial position of the air source adapter port B hole is matched with the position of the working section radial hole annular groove where the working section B hole is located.

And the inner wall of the air source adapter is also provided with an isolation groove exhaust hole matched with the axial position of the annular isolation groove.

And the inner wall of the air source adapter is also provided with an air pressure balance hole.

The radial extruder of the invention comprises a frame, a power box, a material distribution device, a power shaft, an extrusion head, a socket forming device, a rotating chassis, a die and a control cabinet, wherein the die is at least provided with a layer of cage-fixing cylinders which are uniformly distributed in the circumferential direction at the same height,

the air supply device is also included, the air supply switching port is also arranged on the mould, the air supply switching port A is connected with the air port A of the fixed cage cylinder, the air supply switching port B is connected with the air port B of the fixed cage cylinder,

the air feeder sets up the rotating chassis is outside, the mould sets up on the rotating chassis, the air supply switching mouth is fixed to be set up the lower part of mould, the axle center of air supply switching mouth with air feeder's axle center is coaxial, air feeder's air feed head orientation the mould on the air supply switching mouth.

An upper layer fixed cage cylinder and a lower layer fixed cage cylinder are arranged on the die.

The processing method of the radial extruder comprises the following steps:

1) placing the reinforcement cage into a mold, and transferring the mold into a processing station;

2) the lower layer and the upper layer of fixed cage cylinders work in advance, and the lower layer and the upper layer of fixed cage cylinders drive the inserting plates to fix and position the reinforcement cage in the mold;

3) the extrusion head descends to the bottom of the die, and material distribution is started;

4) rotating and extruding the material when the extrusion head is at the bottommost position, and shaping between the outer wall of the extrusion head and the inner wall of the die;

5) the extrusion head ascends and simultaneously supplements materials, after the upper edge of the extrusion head enters the lower edge of the lower layer fixed cage insert plate, the lower layer fixed cage air cylinder moves back, the front end of the lower layer fixed cage insert plate moves back to be positioned on the same surface with the inner wall of the mold, and the extrusion head keeps rotating and continues to move upwards;

6) when the extrusion head rises to the position of the upper-layer fixed cage cylinder, after the upper edge of the extrusion head enters the lower edge of the upper-layer fixed cage insert plate, the upper-layer fixed cage cylinder moves back, the front end of the upper-layer fixed cage insert plate moves back to be positioned on the same surface with the inner wall of the mold, and the extrusion head keeps rotating;

7) and the extrusion head continues to rise until the integral shaping of the concrete pipe is completed.

According to the technical scheme, the air supply mode of face-to-face air supply in the prior art is changed, the mode is improved into the mode that air supply is carried out in the annular cavity after insertion and butt joint, and the reaction force of air supply in the prior art is eliminated. The device has the following technical effects:

1. the air supply head is opposite to the interface, and the air supply head is not required to drive the air cylinder to keep higher air pressure to maintain 'jacking'. The reason is annular gas supply, and no axial reaction force exists.

2. The hole A and the hole B are respectively arranged in front of and behind the working section of the air supply head, and an isolation groove is additionally arranged in the middle of the working section of the air supply head, so that air leakage is prevented, and the working efficiency of a pneumatic loop can be ensured.

3. In the processing engineering, the upper layer cylinder and the lower layer cylinder are respectively controlled (according to different heights of the extrusion head relative to the upper layer inserting plate and the lower layer inserting plate during working), so that the reinforcement cage can be effectively ensured to be positioned at the designed position in the concrete pipe, and the deviation is prevented.

The improvement on the air supply device and the air source switching port enables the air supply device to act sensitively and reliably, and further improves the air supply precision. In the case of ensuring the "accuracy" of the air supply. The processing method provided by the invention has the advantages that the movement of the fixed cage inserting plate is precisely controlled, the inserting plate can be withdrawn in time, and the material can be ensured to 'complement' the inserting plate scar under the action of the extrusion head; meanwhile, the time for returning the inserting plate is controlled precisely, on the basis of tamping the material at the bottom of the pipe, the lower part of the pipe is positioned by the shaped material because the lower part of the reinforcement cage, and the upper part of the reinforcement cage is positioned by the upper inserting plate; and when the extrusion head continues to move upwards to the position of the upper layer inserting plate, the upper layer inserting plate is retreated, and most of the reinforcement cage is positioned by the molded material.

The invention has exquisite design, can save air sources and realize the precision control of the air path. The pipe processed by the complete machine and the pipe manufacturing process has good quality and high precision.

Drawings

Figure 1 is a perspective view of the present invention,

figure 2 is an enlarged view of portion a of figure 1,

figure 3 is a schematic view of the structure of the present invention,

figure 4 is a top view of figure 3,

figure 5 is a schematic perspective view of the gas supply head of the present invention,

figure 6 is a schematic perspective view of figure 5 rotated 180 along the axis,

figure 7 is a schematic view of the structure of the gas supply head of the present invention,

figure 8 is a cross-sectional view B-B of figure 7,

figure 9 is a perspective view of the air supply adapter of the present invention,

figure 10 is a schematic structural view of the air supply adapter of the present invention,

figure 11 is a first schematic diagram of the operation of the gas supply device of the present invention,

figure 12 is a second principle view of the operation of the air supply device according to the invention,

figure 13 is a perspective view of the complete machine of the invention,

figure 14 is a first operational schematic diagram of the tubing process of the present invention,

figure 15 is a second operational schematic diagram of the tubing process of the present invention,

figure 16 is a third operational schematic diagram of the tubing process of the present invention,

figure 17 is a fourth operational schematic of the tubing process of the present invention,

fig. 18 is a schematic structural view of a concrete pipe in the background art of the present invention.

In the figure, the solid arrow lines indicate the direction of movement of the relevant parts, the dotted arrow lines indicate the charging state, and the open arrows indicate the pneumatic direction.

In the figure, 1 is a frame, 2 is a power box, 3 is a material distribution device, 4 is a power shaft, 41 is an extrusion head, 5 is a socket forming device, 6 is a rotary chassis,

the reference numeral 7 denotes a mold,

71 is an air source adapter, 710 is a middle hole, 7101 is a die hole A connector, 7102 is a die hole B connector,

71J1 is air source adapter A hole I, 71J2 is air source adapter A hole II, 71H1 is air source adapter B hole I, 71H2 is air source adapter B hole II,

712 is an isolation slot vent, 713 is an air supply adapter connection port, 714 is an air pressure balance port,

72 is a lower-layer cage-fixing air cylinder, 721 is a lower-layer cage-fixing inserting plate, 73 is an upper-layer cage-fixing air cylinder, 731 is an upper-layer cage-fixing inserting plate, 74 is an inserting plate opening, 75 is a bottom die, 76 is a steel bar cage, 77 is a concrete pipe, 771 is a notch;

8 is an air supply device, 81 is an air supply head,

811 is a base for a gas supply head,

8111 is the axial bore of the base,

8111J1 is the first axial hole A of the gas supply head, 8111J2 is the second axial hole A of the gas supply head, 8111H1 is the first axial hole B of the gas supply head, 8111H2 is the second axial hole B of the gas supply head,

8112 is a radial hole of the base,

8112J1 is the first radial hole A of the gas supply head, 8112J2 is the second radial hole A of the gas supply head, 8112H1 is the first radial hole B of the gas supply head, 8112H2 is the second radial hole B of the gas supply head,

8113 is a base attachment hole,

812 is a gas supply head working section, 8121 is a working section radial hole, 8121J1 is a working section A hole I, 8121J2 is a working section A hole II, 8121H1 is a working section B hole I, and 8121H2 is a working section B hole II;

81211 is a radial hole ring groove of the working section, 81212 is an annular isolation groove, 81213 is a sealing ring placing groove,

813 is a tapered head end and is,

8101 is a gas supply head A hole joint, 8102 is a gas supply head B hole joint,

82 is a gas supply head driving cylinder, 821 is a push plate, 822 is a flexible connecting piece,

and 9 is a control cabinet.

Detailed Description

Some of the terms in the present invention are explained:

feeding: driving the upper/lower fixed cage insert plates (731, 721) of the mould to do inserting action;

and (3) working and retreating: the upper/lower fixed cage insert plates (731, 721) of the mold are driven to do withdrawing action.

In all technical characteristics of the invention, the hole A and the hole B are respectively an air passage in the same direction;

the invention is further described below with reference to the accompanying drawings,

as shown in fig. 1-8, the gas supply device 8 comprises a gas source, a base, a gas supply head driving cylinder 82 and a gas supply head 81, the gas supply head 81 is connected to the end of the piston rod of the gas supply head driving cylinder 82, and the gas supply head 81 comprises a gas supply head base 811, a gas supply head working section 812 and a conical head end 813; the rod end of the air supply head driving cylinder 82 is connected with a push plate 821, and the push plate 821 is connected to a base connecting hole 8113 of the air supply head base 811 through a flexible connecting piece 822, so that the driving cylinder 82 (piston rod) is connected to the air supply head 81.

At least two base radial holes 8112 are formed in the air supply head base 811, and the base radial holes 8112 comprise a base radial hole A and a base radial hole B;

at least two base axial holes 8111 are formed in the end face of the air supply head base 811, and the base axial holes 8111 comprise an air supply head axial hole A and an air supply head axial hole B; the axial hole A of the air supply head and the axial hole B of the air supply head are respectively sealed towards the orifices on the end surface of the base 811 of the air supply head; the base axial bore 8111 is configured to couple the base radial bore 8112 and the working section radial bore 8121.

At least two working section radial holes 8121 are formed in the working section 812 of the gas supply head, and each working section radial hole 8121 comprises a working section A hole and a working section B hole; the working section hole A and the working section hole B are arranged in a staggered mode in the axial position of the working section.

Thus, the two holes (hole A and hole B) formed on the base form an air inlet loop and an air outlet loop, and vice versa.

Further, it is also necessary to explain. Because different specifications of dies (different die diameters) can be produced in practical application, different length requirements are also provided for the stroke of the air supply head driving cylinder 82. In view of the fact that various technologies such as solenoid valve control, inductive switch control, magnetic ring positioning and the like are manufactured for the cylinder program control at present, the technologies in the prior art all belong to conventional technical means, and are not described in detail in the present case.

The air source comprises an air source A and an air source B, and the air source A is sequentially connected with a radial hole A of the base, an axial hole A of the air supply head and a hole A of the working section; the air source B is sequentially connected with a radial hole B of the base, an axial hole B of the air supply head and a hole B of the working section; as shown in fig. 2, a first gas supply port 8101 and a second gas supply port 8102 are provided to supply a first gas supply and a second gas supply, respectively. It should be noted that the gas source a and the gas source b are two different gas paths, and can be replaced by the same gas source and an additional electromagnetic valve set.

A working section radial hole ring groove 81211 is formed in the surface of the working section 812 of the gas supply head corresponding to each working section radial hole 8121. The arrangement of the groove ensures that the same-direction air holes do not need to be precisely butted in a hole butting mode in the butting process, and air passage circulation can be completed only by pushing the air holes needing to be butted to the working section radial hole ring groove 81211 at the same position in the axial direction.

And a sealing ring is arranged on the outer side of the notch of each working section radial hole ring groove 81211. The working section 812 of the gas supply head is provided with a sealing ring placement groove 81213 for placing a sealing ring, which is used for keeping the air tightness when the working section radial holes 8121 in the working section radial hole ring grooves 81211 conduct gas, and maintaining the good performance of the gas supply device.

An annular isolation groove 81212 is further formed in the surface of the air supply working section between the working section A hole and the working section B hole. Used for controlling the air inlet and outlet between the working section A hole and the working section B hole to be not interfered with each other.

1-4, 9-10, the air supply adapter 71 has a cylindrical body with a central bore 710 having an inner diameter that is adapted to the outer diameter of the air supply head working section 812; an air source adapter port A hole and an air source adapter port B hole are arranged on the inner wall of the air source adapter port 71,

the axial position of the first hole of the air source adapter is matched with the position of the working section radial hole ring groove 81211 where the first hole of the working section is positioned,

the axial position of the air source adapter port B hole is matched with the position of a working section radial hole ring groove 81211 where the working section B hole is located.

For the double-deck setting that adapts to radial extruder possess upper level and decide the cage cylinder and the lower floor and decide the cage cylinder, match on air feed head 81 and air supply switching mouth 71 and be equipped with two air feed return circuits:

a first air supply loop is formed by a first air supply head radial hole A8112J 1 → a first air supply head axial hole A8111J 1 → a first working section hole A8121J 1 → a first air supply adapter hole A71J 1 → a first air supply adapter hole B71H 1 → a first working section hole B8121H 1 → a first air supply head axial hole B8111H 1 → a first air supply head radial hole B8112H 1;

the second air supply loop is formed by the second 8112J2 radial first hole of the air supply head, the second 8111J2 axial first hole of the air supply head, the second 8121J2 working section first hole, the second 71J2 air supply adapter second hole, the second 71H2 air supply adapter second hole, the second 8121H2 working section second hole, the second 8111H2 axial second hole of the air supply head and the second 8112H2 radial second hole of the air supply head.

An isolation groove exhaust hole 712 matched with the axial position of the annular isolation groove 81212 is further formed in the inner wall of the air source adapter 71. The isolation slot vent 712 is to vent gas escaping from the supply head stage 812 to prevent gas supply from affecting the other stage radial holes 8121.

An air pressure balance hole 714 is also arranged on the inner wall of the air source adapter 71. The air pressure balancing hole 714 is provided to control the balance of the air pressure in the air source adapter 71.

Two air source adapter port connecting holes 713 are further formed in the bottom face end of one side of the air source adapter port 71, and the air source adapter port 71 is connected to the mold 7 through the air source adapter port connecting holes 713.

The air supply device and the air source adapter in the invention have the tapered head ends, so that even if position errors occur, the air supply head can be guided through the tapered head end 813 at the end part and enters the middle hole 710 of the air source adapter.

As shown in fig. 13, the radial extruder comprises a frame 1, a power box 2, a material distribution device 3, a power shaft 4, an extrusion head 41, a socket forming device 5, a rotary chassis 6, a die 7 and a control cabinet 9, wherein the die 7 is provided with a layer of cage-fixing cylinders uniformly distributed in the circumferential direction at least at the same height,

still include air feeder 8, still be equipped with air supply switching mouth 71 on the mould 7, the first gas port of cage cylinder is decided to air supply switching interface first jogged joint, and the second gas port of cage cylinder is decided to air supply switching interface second jogged joint, still is provided with mould first jogged joint 7101 and mould second jogged joint 7102 on the air supply switching mouth 71, decides the cage cylinder through the tube coupling respectively. Taking the two-side cylinders arranged on the die as an example, the first hole connector 7101 of the die for realizing the feeding needs one connector, and the second hole connector 7102 of the die needs two connectors when the two layers of cylinders are out of synchronization, and certainly, two air passages matched with the two connectors need to be arranged.

The air supply device 8 is arranged outside the rotating chassis 6, the mould 7 is arranged on the rotating chassis 6, the air source adapter 71 is fixedly arranged at the lower part of the mould 7, the axle center of the air source adapter 71 is coaxial with the axle center of the air supply device 8, and the air supply head of the air supply device 8 faces the air source adapter 71 on the mould 7.

An upper layer and a lower layer of fixed cage cylinders are arranged on the die 7. The upper-layer fixed cage cylinder 73 and the lower-layer fixed cage cylinder 72 are used for fixing a reinforcement cage 76 in the mold 7, and inserting plates are arranged on the fixed cage cylinders and enter and exit through inserting plate openings 74 formed in the mold 7 during work feeding and retreating. The bottom of the mould 7 is also provided with a bottom membrane 75 for supporting and fixing the bottom of the mould 7 when the concrete pipe 77 is poured.

Referring to fig. 11-17, the processing method of the radial extruder is performed according to the following steps:

1) placing the reinforcement cage 76 into the mold 7, and transferring the mold 7 into a processing station;

2) the lower layer and the upper layer fixed cage cylinders work in, and the lower layer and the upper layer fixed cage cylinders drive the inserting plates to fix and position the reinforcement cage 76 in the mold 8; the working principle is shown in fig. 11, the air supply device 8 works along the radial first hole 8112J1 of the air supply head, the axial first hole 8111J1 of the air supply head, the first hole 8121J1 of the working section, the first hole 71J1 of the air supply adapter → a working cavity entering the upper/lower fixed cage air cylinders (73, 72), the upper/lower fixed cage spiles (731, 721) are driven to work,

the return air of the working cavity of the upper/lower layer fixed cage cylinders (73, 72) → the return air of the air source adapter opening I71H 1 → the working section I8121H 1 → the air supply head axial I8111H 1 → the air supply head radial I8112H 1.

The pneumatic process realizes the working progress of the upper/lower layer fixed cage cylinders (73, 72).

In the scheme, two loops can be arranged for simultaneously and respectively supplying air to the upper and lower layer fixed cage cylinders in the working process, namely the two loops comprise a second 8112J2 radial first hole of the air supply head → a second 8111J2 axial first hole of the air supply head → a second 8121J2 first hole of the working section → a second 71J2 first hole of the air supply adapter;

during air return, the working chamber air return of a certain layer of cylinder → the second hole 71H2 of the air source adapter opening B → the second hole 8121H2 of the working section B → the second axial hole 8111H2 of the air supply head → the second radial hole 8112H2 of the air supply head realizes air return.

The fixed cage cylinder can be driven by the air supply, so that the fixed cage plugboard worker can fix and position the reinforcement cage 76 in the die 7.

3) The extrusion head 41 descends to the bottom of the die 7 to start material distribution; as shown in fig. 14, the extrusion head 41 is driven by the power shaft 4 to slowly descend to the bottom of the die 7.

4) The extrusion head 41 is positioned at the bottommost position, and the material is rotated and extruded and is shaped between the outer wall of the extrusion head 41 and the inner wall of the die 7; as shown in FIG. 15, the material is poured from the top of the mold 7 and is extruded by the extrusion head 41 to slowly infiltrate between the outer wall of the extrusion head 41 and the inner wall of the mold 7, and the extrusion head 41 is rotated simultaneously to extrude the material, thereby molding the concrete pipe 77.

5) The extrusion head 41 ascends, materials are supplemented at the same time, after the upper edge of the extrusion head 41 enters the lower edge of the lower fixed cage insert plate 721, the lower fixed cage air cylinder 72 moves back, the front end of the lower fixed cage insert plate 721 moves back to be positioned on the same surface with the inner wall of the die 7, and the extrusion head 41 keeps rotating and continues to move upwards;

as shown in fig. 16, before the extrusion head 41 rises to the height of the lower edge of the lower cage-fixing plate 721, the lower cage-fixing plate 721 needs to be withdrawn to prevent the side surface of the concrete pipe 77 from generating a notch 771 when being shaped in the mold 7, which affects the product quality, as shown in fig. 18.

The working and retreating pneumatic circuit is determined according to the number of layers of the fixed cage air cylinders arranged on the die, and two working and retreating pneumatic circuits are arranged by taking two layers as an example.

The lower-layer fixed cage cylinder 72 moves back firstly, the upper-layer fixed cage cylinder 73 does not move under pressure maintaining, the working principle of the working principle is shown in figure 12, along the radial direction of the air supply head, hole II 8112H2 → axial direction of the air supply head, hole II 8111H2 → working section hole II 8121H2 → air supply transfer port hole II 71H2 → working cavity entering the lower-layer fixed cage cylinder (72) through the pipeline on the die → driving the lower-layer fixed cage insert plate (721) to move back, and the end surface of the insert plate and the inner surface of the die are ensured to process the same surface when moving back;

and (3) returning air to a working cavity of the lower fixed cage air cylinder (72) → completing the working and retreating of the lower fixed cage insert plate 721 by an upper pipeline of the die → the second hole of the air source adapter 71J2 → the second hole of the working section 8121J2 → the second axial hole of the air supply head 8111J2 → the second radial hole of the air supply head 8112J 2.

6) When the extrusion head 41 rises to the position of the upper-layer fixed cage cylinder 73, after the upper edge of the extrusion head 41 enters the lower edge of the upper-layer fixed cage insert plate 731, the upper-layer fixed cage cylinder 73 moves back, the front end of the upper-layer fixed cage insert plate 731 moves back to be positioned on the same surface with the inner wall of the die 8, and the extrusion head 41 keeps rotating; as shown in fig. 17, the upper-layer fixed cage insert plate 731 is withdrawn before the extrusion head 41 is raised to the height of the lower edge of the upper-layer fixed cage insert plate 731.

The upper layer working and retreating pneumatic process comprises the following steps: the method comprises the steps that a first air supply head radial hole B8112H 1 → a first air supply head axial hole B8111H 1 → a first working section hole B8121H 1 → a first air source transfer port B71H 1 → a working withdrawing cavity entering an upper layer fixed cage air cylinder (73) through a pipeline on a die → a driving upper layer fixed cage insert plate (731) is withdrawn, and the end surface of the insert plate and the inner surface of the die are ensured to process the same surface during withdrawing;

and (3) returning air to a working cavity of the upper-layer fixed cage air cylinder (73) → through a pipeline on the die → a first air source adapter hole (71J 1) → a first working section hole (8121J 1 → a first air supply head axial hole (8111J 1) → a first air supply head radial hole (8112J 1), so that the working and withdrawing of the upper-layer fixed cage insert plate 731 is completed.

7) The extrusion head 41 continues to rise until the integral shaping of the concrete pipe 77 is completed.

The radial extruder of the invention controls the operation of the whole machine by a control cabinet 9, the top of a frame 1 is provided with a power box 2, the power box 2 drives a power shaft 4 to control the up-and-down operation of an extrusion head 41, the frame 1 is also provided with a material distribution device 3, and the material distribution device 3 distributes materials in a die 7.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims (9)

1. A gas supply device of a radial extruder comprises a gas source, a base, a gas supply head driving cylinder and a gas supply head, wherein the gas supply head is connected with the end of a piston rod of the gas supply head driving cylinder;

at least two base radial holes are formed in the base of the gas supply head, and the base radial holes comprise a base radial hole A and a base radial hole B;

the end surface of the air supply head base is provided with at least two base axial holes, and the base axial holes comprise an air supply head axial hole A and an air supply head axial hole B; the axial hole A of the air supply head and the axial hole B of the air supply head are respectively sealed towards the orifices on the end surface of the air supply head base;

at least two working section radial holes are formed in the working section of the gas supply head, and the working section radial holes comprise a working section hole A and a working section hole B;

the gas source comprises a gas source A and a gas source B, and the gas source A is sequentially connected with the radial hole A of the base, the axial hole A of the gas supply head and the hole A of the working section; and the air source B is sequentially connected with the radial hole B of the base, the axial hole B of the air supply head and the hole B of the working section.

2. The air supply device for the radial extruder as claimed in claim 1, wherein a working section radial hole ring groove is formed on the surface of the working section of the air supply head corresponding to each working section radial hole.

3. A gas supply device for a radial extrusion press as claimed in claim 2, wherein a sealing ring is provided outside the groove opening of each of said working-section radial-hole ring grooves.

4. The air supply device for the radial extruder as claimed in claim 1, wherein an annular isolation groove is further formed on the surface of the air supply working section between the working section A hole and the working section B hole.

5. An air supply adapter for a die of a radial extruder, wherein the air supply adapter has a cylindrical body with a central bore, the central bore having an inner diameter that is adapted to the outer diameter of the working section of the air supply head of claim 1; an air source adapter A hole and an air source adapter B hole are arranged on the inner wall of the air source adapter,

the axial position of the air source adapter A hole is matched with the position of the working section radial hole annular groove where the working section A hole is located in the claim 2,

the axial position of the air source adapter port B hole is matched with the position of the working section radial hole annular groove where the working section B hole is located in the claim 2.

6. The air source adapter port of a radial extruder die as claimed in claim 5, wherein the inner wall of the air source adapter port is further provided with an isolation groove vent hole matched with the axial position of the annular isolation groove in claim 4.

7. The air source adapter of the radial extruder die of claim 5, wherein an air pressure balancing hole is further formed in an inner wall of the air source adapter.

8. A radial extruder comprises a frame, a power box, a material distribution device, a power shaft, an extrusion head, a socket forming device, a rotary chassis, a die and a control cabinet, wherein the die is at least provided with a layer of cage-fixing cylinders which are uniformly distributed in the circumferential direction at the same height,

characterized in that the air supply device also comprises an air supply device as claimed in claim 1, the mould is also provided with an air source switching port as claimed in claim 5, a hole A of the air source switching port is connected with a hole A of the fixed cage cylinder, a hole B of the air source switching port is connected with a hole B of the fixed cage cylinder,

the air feeder sets up the rotating chassis is outside, the mould sets up on the rotating chassis, the air supply switching mouth is fixed to be set up the lower part of mould, the axle center of air supply switching mouth with air feeder's axle center is coaxial, air feeder's air feed head orientation the mould on the air supply switching mouth.

9. A radial extruder as claimed in claim 8, wherein upper and lower caged cylinders are provided on said die.

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