CN112895376A

CN112895376A - Vertical pushing and extruding machine

Info

Publication number: CN112895376A
Application number: CN202110046431.1A
Authority: CN
Inventors: 杨辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-06-04

Abstract

The invention discloses a vertical pushing machine, which comprises an extruder, a volatilization furnace and a sintering furnace, wherein the volatilization furnace is arranged in the extruder; the extruder comprises a hydraulic cylinder and an extrusion cylinder; the extrusion cylinder is connected with the supporting frame through a clamping block; the joint is provided with a rotating block; the volatilization furnace comprises a first volatilization furnace and a second volatilization furnace.

Description

Vertical pushing and extruding machine

Technical Field

The invention relates to the technical field of resin molding, in particular to a vertical pushing and extruding machine.

Background

The fluorine-containing resin is generally produced by paste extrusion during processing, and products thereof mainly include pipes, films and the like. The paste extrusion equipment can be divided into a horizontal type and a vertical type according to different installation modes. The main machine of the horizontal extrusion equipment is horizontally arranged on the ground, the extruded materials are horizontally pushed and enter a horizontal or vertical sintering furnace, and a finished product is obtained after sintering and cooling. As shown in fig. 1, the horizontal extrusion apparatus includes a main extrusion machine 010, a die 011, a raw extruded tube 012, a sintering furnace 013, a finished tube 014, a diameter gauge 015, a conveyer belt 016, and a winding basket 017, wherein the sintering furnace 013 is a horizontal sintering furnace. Still another horizontal extrusion device is shown in fig. 2, and includes a main extrusion machine 101, a die head 100, a steering guide wheel 102, a parison extrusion tube 103, a sintering furnace 104, a stopper 105, a diameter gauge 106, and a winding basket 107, wherein the sintering furnace 104 is a vertical sintering furnace. The common vertical extrusion equipment on the market stands on a high layer, extrudes from top to bottom, and obtains a finished product after sintering and cooling. As shown in fig. 3, the device sequentially comprises a pushing main machine 006, a die head 005, an extruded parison tube 004, a sintering furnace 003, a diameter gauge 002 and a winding basket 001 from top to bottom.

When the material is horizontally pushed out of the forming die, the horizontal extrusion equipment can deform due to the compression of the gravity of the horizontal extrusion equipment, and internal cracks can be generated under severe conditions. In fig. 2, it can be seen that the material is horizontally pushed out of the forming die and then displaced in front of the turning guide wheel, so that a plurality of tiny wheels are often used for supporting in order to reduce deformation caused by self weight, but scratches or scratches are generated on the material or the pipe when the material or the pipe is in contact with the plurality of wheels, and the appearance of the product is affected. The contact surface of the material or the pipe with the guide wheel at the guide wheel is only 1/4, and the contact surface is too small, which can cause internal crack defects. Vertical extrusion equipment is because unsettled state, can not produce deformation or internal crack that the dead weight leads to, but to vertical extrusion equipment that top-down extrudes, its material feeding mode is more difficult, the common mode is to fill the preforming body (the material blank that the preforming process was done) after opening the die head that forming die belonged to, because feeding mode is from bottom to top, consequently feeding difficulty, the bad thing that produces mainly has the preforming body easily to inaccurate cylinder, easily cracked, the preforming body produces scraping defect etc. and can not add multistage material only to add one section material, the product length that the preparation obtained is shorter, it is reinforced to need frequent opening the die head, it wastes time and energy and still easily causes the waste of material to use. In patent CN106273299B, a dispersed polytetrafluoroethylene pushing unit with horizontal pushing steering and vertical pushing (from top to bottom) has been mentioned; in patent CN209273919U, a vertical apparatus for extruding dispersion ptfe is also proposed, which extrudes from top to bottom, and fills the preform into the cavity after moving the die head downward and upward, and the feeding method is very inconvenient.

In addition, the sintering furnace of the vertical pushing equipment is usually integral, namely, one furnace is used, the heating is carried out in multiple sections and areas, the solvent oil is firstly volatilized from the extruded materials or pipes according to the process requirements, then the materials or the pipes are sintered and cooled, the temperature of each area is generally set to be 100/200/300/400/500 ℃ from top to bottom, and the materials or the pipes are directly cooled naturally after being taken out of the furnace. The hot air flows from bottom to top, the temperature of the air at the lower end is extremely high, so that the temperature control of the temperature zone at the upper part is unknown, the temperature is often measured between 180 ℃ and 200 ℃, the pipe is overheated, the solvent oil is incompletely volatilized, and the solvent oil is held in the pipe or the pipe wall, so that the product is poor. The invention mainly aims to provide a set of feasible equipment scheme, which can meet the requirements of extrusion processing of the fluorine-containing resin.

Disclosure of Invention

In order to solve the problems, the invention provides a vertical pushing machine, which comprises an extruder, a volatilization furnace and a sintering furnace, wherein the extruder comprises a hydraulic cylinder and an extrusion cylinder; the extrusion cylinder is connected with the supporting frame through a clamping block; the joint is provided with a rotating block; the volatilization furnace comprises a first volatilization furnace and a second volatilization furnace.

As a preferable technical scheme, a core bar is vertically arranged at the center of the extruder; a push rod is connected outside the core rod; and one end of the push rod, which is far away from the hydraulic cylinder, is connected with a push head.

As a preferred technical scheme, an oil pipe is arranged on the hydraulic cylinder; an oil seal is arranged between one end of the hydraulic cylinder, which is close to the extrusion cylinder, and the push rod; a material cavity is arranged in the extrusion cylinder; and one end of the material cavity, which is far away from the hydraulic cylinder, is provided with a die head.

As a preferred technical scheme, when the extruder extrudes materials from bottom to top through the die head by the rotating block, the extruder and the first volatilization furnace are connected by the conveying pipe and arranged on the first vertical surface from bottom to top; the second volatilization furnace and the sintering furnace are connected through a conveying pipe and are arranged on a second vertical surface from top to bottom; and a steering guide wheel is arranged between the first vertical surface and the second vertical surface.

As a preferred technical scheme, when the extruder extrudes materials from top to bottom through the die head, and when the extruder extrudes the materials from top to bottom through the die head through the rotating block, the extruder, the first volatilization furnace, the second volatilization furnace and the sintering furnace are connected through the conveying pipes and are arranged on the same vertical surface from bottom to top.

As a preferred technical scheme, a cooling buffer furnace is further arranged below the volatilization furnace

As a preferred technical scheme, a diameter measuring instrument is arranged below the cooling buffer furnace and used for detecting the outer diameter of the sintered material.

As a preferred technical scheme, a collecting basket is arranged below the diameter measuring instrument and used for containing sintered materials.

As a preferred technical scheme, an outlet of the cooling buffer furnace is provided with a limiting block for limiting the position of a material product.

As a preferred technical solution, the caliper comprises a laser generator and a laser receiver.

Has the advantages that:

1. according to the vertical pushing and extruding machine, the rotating block is arranged, so that the extruding machine can be rotated under the mechanical or hydraulic action, a die head of the extruding machine is driven to move upwards, downwards or horizontally out, the extruding direction can be adjusted as required, the materials can be extruded from bottom to top or from top to bottom, the materials can be determined according to the specification and the characteristics of products, the switching and the production can be rapidly realized, and the application range is enlarged;

2. the rotatability of the extruder also facilitates the feeding mode, and can also feed multiple sections of materials, in addition, the length of the extrusion cylinder is further prolonged to 4-5 m, the yield is increased, the length of the product is longer, and the number of joints is reduced; when the material is extruded from bottom to top through the die head, a steering guide wheel with the diameter of 400-1500 mm is arranged between the first vertical surface of the extruder and the first volatilizing furnace and the second vertical surface of the second volatilizing furnace and the sintering furnace, so that the contact area of the conveying pipe and the steering guide wheel can be increased, and the probability of generating deformation defects is greatly reduced;

3. the vertical sintering furnace is arranged on the second vertical surface, and the limiting block is arranged at the outlet and used for limiting the position of a material product, so that the contact probability of the product and the inner side of the sintering furnace can be reduced, and the occurrence of poor appearance phenomena such as scraping, scratching and the like of the material product is not easy to occur;

4. the volatilization furnace provided by the invention comprises the first volatilization furnace and the second volatilization furnace which are both disconnected from the sintering furnace, so that the temperature of the volatilization zone can be effectively prevented from being influenced by overhigh temperature of the sintering zone, and multiple volatilization is carried out, so that the volatilization is more complete, the product quality is improved, the auxiliary agents volatilized in material processing can be fully recycled, and the waste of materials is reduced; the cooling buffer furnace is arranged below the sintering furnace, so that the phenomenon that outside cold air enters a sintering area to reduce the sintering temperature is reduced, and the probability that products are cracked and shrunk unevenly due to the fact that the products directly fall into the collecting basket at high temperature is reduced.

Drawings

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

FIG. 1 is a horizontal extrusion apparatus including a horizontal sintering furnace according to the background art;

010 pushes the host computer, 011 die heads, 012 extrudes the blank tube, 013 sintering furnaces, 014 finished tube, 015 calipers, 016 conveyer belts, 017 rolling baskets;

FIG. 2 is a horizontal extrusion apparatus including a vertical sintering furnace according to the prior art;

101, a main pushing machine, 100 die heads, 102 turning guide wheels, 103, a parison tube, 104, a sintering furnace (containing a volatilization furnace), 105, a limiting block, 106, a diameter gauge and 107, a winding basket;

FIG. 3 is a vertical extrusion apparatus of the background art;

006 pushing host machine, 005 die head, 004 extruding blank pipe, 003 sintering furnace (containing volatilizing furnace), 002 diameter measuring instrument and 001 winding basket;

FIG. 4 is a schematic structural view of an extruder in a vertical extruder according to the present invention;

FIG. 5 is a schematic perspective view of an extruder of a vertical extruder according to the present invention;

FIG. 6 is a schematic structural view of a vertical extruder according to the present invention during bottom-up extrusion;

FIG. 7 is a schematic structural view of a vertical pushing machine according to the present invention, when extruding from top to bottom;

reference numerals: 301 hydraulic cylinder, 302 core rod, 303 push rod, 304 oil pipe, 306 extrusion cylinder, 307 oil seal, 308 material cavity, 309 rotating block, 310 clamping block, 311 support frame, 312 first volatilization furnace, 313 die head, 314 second volatilization furnace, 315 sintering furnace, 316 buffer cooling furnace, 317 diameter gauge, 318 delivery pipe, 319 rolling basket, 320 turning guide wheel.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

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.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In the description of the present invention, the meaning of "and/or" means that both of them exist individually or at the same time.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to solve the problems, the invention provides a vertical pushing machine, which comprises an extruder, a volatilization furnace and a sintering furnace; the extruder comprises a hydraulic cylinder and an extrusion cylinder; the extrusion cylinder is connected with the supporting frame through a clamping block; the joint is provided with a rotating block; the volatilization furnace comprises a first volatilization furnace and a second volatilization furnace.

The volatilization furnace provided by the invention comprises the first volatilization furnace and the second volatilization furnace which are both disconnected from the sintering furnace, so that the temperature of the volatilization area can be effectively prevented from being influenced by overhigh temperature of the sintering area, and multiple volatilization is beneficial to complete volatilization, the product quality is improved, the auxiliary agents volatilized in material processing can be fully recycled, and the waste of materials is reduced.

In some embodiments, the hydraulic cylinder and the extrusion cylinder are fixedly connected by a bolt.

In some embodiments, the length of the extrusion cylinder is 4-5 m; preferably, the length of the extrusion cylinder is 4.5 m.

The extruder in the vertical extruder has rotatability, so that the feeding mode is convenient, multiple sections of materials can be added, in addition, the length of an extrusion cylinder is further prolonged to 4-5 m, the yield is increased, the length of a product is longer, and the number of joints is reduced.

In some embodiments, a core rod is vertically disposed at the center of the extruder; a push rod is connected outside the core rod; and one end of the push rod, which is far away from the hydraulic cylinder, is connected with a push head.

In some embodiments, an oil tube is provided on the hydraulic cylinder; an oil seal is arranged between one end of the hydraulic cylinder, which is close to the extrusion cylinder, and the push rod.

In some embodiments, the oil pipe comprises an oil inlet pipe and an oil outlet pipe, and is arranged at two ends of the hydraulic cylinder.

In some embodiments, a material cavity is arranged in the extrusion cylinder; and one end of the material cavity, which is far away from the hydraulic cylinder, is provided with a die head.

In some embodiments, the die is tapered.

The die head is designed into a conical structure, so that the extrusion of materials is facilitated, and the waste of the materials can be reduced.

The extruder can rotate under the mechanical or hydraulic action through the rotating block, so that a die head of the extruder is driven to move upwards, downwards or horizontally out, the extrusion direction can be adjusted according to needs, the materials can be extruded from bottom to top or from top to bottom, the materials can be determined according to the specifications and characteristics of products, the switching and the production can be rapidly realized, and the application range is enlarged.

In some embodiments, when the extruder extrudes the material through the die head from bottom to top by the rotating block, the extruder and the first volatilization furnace are connected by the conveying pipe and arranged on the first vertical surface from bottom to top; the second volatilization furnace and the sintering furnace are connected through a conveying pipe and are arranged on a second vertical surface from top to bottom; and a steering guide wheel is arranged between the first vertical surface and the second vertical surface.

In some preferred embodiments, the diameter of the steering guide wheel is 400-1500 mm; more preferably, the diameter of the steering guide wheel is 950 mm.

According to the invention, the diameter of the steering guide wheel is set to be 400-1500 mm, so that the contact area of the conveying pipe and the steering guide wheel can be increased, and the probability of generating deformation defects is greatly reduced.

In other embodiments, when the extruder extrudes the material through the die head from top to bottom through the rotating block, the extruder, the first volatilization furnace, the second volatilization furnace and the sintering furnace are arranged on the same vertical surface from bottom to top through the conveying pipe connection.

In some embodiments, a cooling buffer furnace is also arranged below the sintering furnace.

In some embodiments, the cooling buffer furnace and the sintering furnace have a length ratio of 1: (2-4); preferably, the length ratio of the cooling buffer furnace to the sintering furnace is 1: 3.

a cooling buffer furnace is arranged below the sintering furnace, the cooling buffer furnace and the sintering furnace are designed in an integral structure, and the length ratio of the cooling buffer furnace to the sintering furnace is further limited to be 1: (2-4), thereby help reducing the phenomenon that the sintering temperature is reduced to the outside cold air entering sintering district, also help reducing because the product directly falls into the probability that the product appears the fracture, shrink inhomogeneous in the collection basket under high temperature.

In some embodiments, a diameter gauge is arranged below the cooling buffer furnace and used for detecting the outer diameter of the sintered material.

In some preferred embodiments, a collection basket is arranged below the diameter gauge and used for containing the sintered materials.

In some embodiments, the outlet of the cooling buffer furnace is provided with a limiting block for limiting the position of the material product.

The sintering furnace is a vertical sintering furnace, and the limiting block is arranged at the outlet of the cooling buffer furnace below the sintering furnace, so that the contact probability of a product and the inner side of the sintering furnace can be reduced, and the phenomena of poor appearance such as scraping and scratching of the material product are not easy to generate.

In some embodiments, the caliper comprises a laser generator and a laser receiver.

In some embodiments, a heating device and a temperature control device are arranged on the inner wall of the volatilization furnace.

In some embodiments, the volatilization oven is provided with an air outlet.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

Example 1

This example 1 provides a vertical type extruder, as shown in fig. 4 and 5, including an extruder, a volatilization furnace, and a sintering furnace 315; the extruder comprises a hydraulic cylinder 301 and an extrusion cylinder 306; the extrusion cylinder 306 is connected with a supporting frame 311 through a clamping block 310; a rotating block 309 is arranged at the joint; the volatilization oven comprises a first volatilization oven 312 and a second volatilization oven 314.

The hydraulic cylinder 301 and the extrusion cylinder 306 are fixedly connected by bolts.

The length of the extrusion cylinder 306 is 4.5 m.

A core bar 302 is vertically arranged at the center of the extruder; a push rod 303 is connected outside the core rod 302; and one end of the push rod 303, which is far away from the hydraulic cylinder 301, is connected with a push head.

An oil pipe 304 is arranged on the hydraulic cylinder 301; an oil seal 307 is arranged between one end of the hydraulic cylinder 301 close to the extrusion cylinder 306 and the push rod 303.

The oil pipe 304 comprises an oil inlet pipe and an oil outlet pipe, and is arranged at two ends of the hydraulic cylinder 301.

A material cavity 308 is arranged in the extrusion cylinder 306; and a die head 313 is arranged at one end of the material cavity 308 far away from the hydraulic cylinder 301.

The die 313 is tapered.

As shown in fig. 6, when the extruder extrudes the material through the die head 313 from bottom to top by the rotating block 309, the extruder and the first volatilization furnace 312 are connected by the conveying pipe 318 and arranged on the first vertical surface from bottom to top; the second volatilization furnace 314 and the sintering furnace 315 are connected through a conveying pipe 318 and are arranged on a second vertical surface from top to bottom; a steering guide wheel 320 is arranged between the first vertical surface and the second vertical surface.

The diameter of the steering guide wheel 320 is 950 mm.

A cooling buffer furnace 316 is also arranged below the sintering furnace 315.

The length ratio of the cooling buffer furnace 316 to the sintering furnace 315 is 1: 3.

and a diameter measuring instrument 317 is arranged below the cooling buffer furnace 316 and is used for detecting the outer diameter of the sintered material.

And a collecting basket 319 is arranged below the diameter measuring instrument 317 and used for containing sintered materials.

And a limiting block is arranged at the outlet of the cooling buffer furnace 316 and used for limiting the position of a material product.

The caliper 317 includes a laser generator and a laser receiver.

And the inner wall of the volatilization furnace is provided with a heating device and a temperature control device.

Air outlets are arranged on the volatilization furnace.

Example 2

This embodiment 2 provides a vertical type extruder, as shown in fig. 4 and 5, including an extruder, a volatilization furnace, and a sintering furnace 315; the extruder comprises a hydraulic cylinder 301 and an extrusion cylinder 306; the extrusion cylinder 306 is connected with a supporting frame 311 through a clamping block 310; a rotating block 309 is arranged at the joint; the volatilization oven comprises a first volatilization oven 312 and a second volatilization oven 314.

The length of the extrusion cylinder 306 is 4.5 m.

The die 313 is tapered.

As shown in fig. 7, when the extruder extrudes the material through the die head 313 from top to bottom through the rotating block 309, the extruder, the first volatilization furnace 312, the second volatilization furnace 314 and the sintering furnace 315 are connected through the conveying pipe 318 and are arranged on the same vertical plane from bottom to top.

A cooling buffer furnace 316 is also arranged below the sintering furnace 315.

The caliper 317 includes a laser generator and a laser receiver.

Air outlets are arranged on the volatilization furnace.

According to the vertical pushing and extruding machine, the rotating block is arranged, so that the extruding machine can be rotated under the mechanical or hydraulic action, a die head of the extruding machine is driven to move upwards, downwards or horizontally out, the extruding direction can be adjusted as required, the materials can be extruded from bottom to top or from top to bottom, the materials can be determined according to the specification and the characteristics of products, the switching and the production can be rapidly realized, and the application range is enlarged; the rotatability of the extruder also facilitates the feeding mode, and can also feed multiple sections of materials, in addition, the length of the extrusion cylinder is further prolonged to 4-5 m, the yield is increased, the length of the product is longer, and the number of joints is reduced; when the material is extruded from bottom to top through the die head, a steering guide wheel with the diameter of 400-1500 mm is arranged between the first vertical surface of the extruder and the first volatilizing furnace and the second vertical surface of the second volatilizing furnace and the sintering furnace, so that the contact area of the conveying pipe and the steering guide wheel can be increased, and the probability of generating deformation defects is greatly reduced; the vertical sintering furnace is arranged on the second vertical surface, and the limiting block is arranged at the outlet and used for limiting the position of a material product, so that the contact probability of the product and the inner side of the sintering furnace can be reduced, and the occurrence of poor appearance phenomena such as scraping, scratching and the like of the material product is not easy to occur; the arranged volatilization furnace comprises a first volatilization furnace and a second volatilization furnace which are both disconnected from the sintering furnace, so that the temperature of the volatilization region can be effectively prevented from being influenced by overhigh temperature of the sintering region, and multiple volatilization is performed, so that the volatilization is more complete, the product quality is improved, the auxiliary agents volatilized in material processing can be fully recycled, and the waste of materials is reduced; the cooling buffer furnace is arranged below the sintering furnace, so that the phenomenon that outside cold air enters a sintering area to reduce the sintering temperature is reduced, and the probability that products are cracked and shrunk unevenly due to the fact that the products directly fall into the collecting basket at high temperature is reduced.

The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.

Claims

1. A vertical pushing machine comprises an extruder, a volatilization furnace and a sintering furnace, and is characterized in that the extruder comprises a hydraulic cylinder and an extrusion cylinder; the extrusion cylinder is connected with the supporting frame through a clamping block; the joint is provided with a rotating block; the volatilization furnace comprises a first volatilization furnace and a second volatilization furnace.

2. A vertical extruder as claimed in claim 1 wherein a core rod is vertically disposed at the center of the extruder; a push rod is connected outside the core rod; and one end of the push rod, which is far away from the hydraulic cylinder, is connected with a push head.

3. The vertical pushing and extruding machine as claimed in claim 2, wherein the hydraulic cylinder is provided with an oil pipe; an oil seal is arranged between one end of the hydraulic cylinder, which is close to the extrusion cylinder, and the push rod; a material cavity is arranged in the extrusion cylinder; and one end of the material cavity, which is far away from the hydraulic cylinder, is provided with a die head.

4. The vertical pushing and extruding machine according to claim 3, wherein when the extruder extrudes the material through the die head from bottom to top by the rotating block, the extruder and the first volatilization furnace are connected by the conveying pipe and arranged on the first vertical surface from bottom to top; the second volatilization furnace and the sintering furnace are connected through a conveying pipe and are arranged on a second vertical surface from top to bottom; and a steering guide wheel is arranged between the first vertical surface and the second vertical surface.

5. The vertical pushing extruder according to claim 3, wherein when the extruder pushes the material through the die head from top to bottom, and when the extruder pushes the material through the rotating block from top to bottom, the extruder, the first volatilizing furnace, the second volatilizing furnace and the sintering furnace are arranged on the same vertical plane from bottom to top through the conveying pipe connection.

6. A vertical pushing extruder as claimed in claim 4 or 5, wherein a cooling buffer furnace is further provided below the volatilizing furnace.

7. The vertical pushing and extruding machine as claimed in claim 6, wherein a diameter measuring instrument is arranged below the cooling buffer furnace for detecting the outer diameter of the sintered material.

8. The vertical pushing and extruding machine as claimed in claim 7, wherein a collecting basket is provided below the diameter gauge for containing the sintered material.

9. A vertical extruder as claimed in claim 8 wherein the exit of the cooling buffer furnace is provided with a stop to limit the position of the product material.

10. A vertical extruder as claimed in claim 9 wherein the caliper comprises a laser generator and a laser receiver.