阅读说明：本技术 一种挤压筒装配后测温孔对齐的方法 (Method for aligning temperature measuring holes after extrusion container assembly ) 是由 余念 窦阳 孟帅 朱铭洋 于 2019-10-11 设计创作，主要内容包括：本发明提供了一种挤压筒装配后测温孔对齐的方法,包括如下步骤：提供过盈配合的外筒和内筒；在外筒和内筒上分别形成外筒测温孔和内筒测温孔；在装配后,外筒测温孔与内筒测温孔在轴向和周向上对齐；在外筒大端的端面上设置具有外筒定位面的外筒定位块；在内筒大端的端面上设置具有内筒定位面的内筒定位块；加热外筒,将内筒放入外筒内,并使外筒定位面与内筒定位面相对贴合；对挤压筒进行冷却,外筒小端和内筒小端的降温速率大于挤压筒其他部位的降温速率。本发明通过在外筒和内筒上分别设置具有相互贴合的定位面的定位块,使测温孔轴向和周向对齐；通过限制挤压筒在装配后的冷却条件,确保测温孔在轴向上的对齐不会发生偏移。(The invention provides a method for aligning temperature measuring holes after assembling an extrusion container, which comprises the following steps: providing an outer cylinder and an inner cylinder which are in interference fit; an outer cylinder temperature measuring hole and an inner cylinder temperature measuring hole are formed in the outer cylinder and the inner cylinder respectively; after assembly, the outer barrel temperature measuring hole and the inner barrel temperature measuring hole are aligned in the axial direction and the circumferential direction; an outer cylinder positioning block with an outer cylinder positioning surface is arranged on the end surface of the large end of the outer cylinder; an inner cylinder positioning block with an inner cylinder positioning surface is arranged on the end surface of the large end of the inner cylinder; heating the outer barrel, putting the inner barrel into the outer barrel, and enabling the positioning surface of the outer barrel to be relatively attached to the positioning surface of the inner barrel; and cooling the extrusion container, wherein the cooling rates of the small end of the outer barrel and the small end of the inner barrel are higher than those of other parts of the extrusion container. The outer cylinder and the inner cylinder are respectively provided with the positioning blocks with the positioning surfaces which are mutually attached, so that the temperature measuring holes are aligned in the axial direction and the circumferential direction; by limiting the cooling conditions of the container after assembly, it is ensured that the alignment of the temperature measuring holes in the axial direction does not shift.)

1. A method for aligning temperature measuring holes after an extrusion container is assembled is characterized by comprising the following steps:

providing an outer cylinder and an inner cylinder which are in interference fit with an extrusion cylinder to be assembled; one end of the outer cylinder is a small end of the outer cylinder provided with a concave limiting step, and the other end of the outer cylinder is a large end of the outer cylinder with an equal-diameter opening; one end of the inner cylinder is a small end of the inner cylinder provided with a convex part limiting step, and the other end of the inner cylinder is a large end of the inner cylinder with an equal-diameter opening;

an outer barrel temperature measuring hole is formed in the outer barrel and penetrates through the wall of the outer barrel; an inner cylinder temperature measuring hole is formed in the outer wall of the inner cylinder; after the outer barrel and the inner barrel are assembled, the outer barrel temperature measuring holes and the inner barrel temperature measuring holes are aligned in the axial direction and the circumferential direction;

an outer cylinder positioning block with an outer cylinder positioning surface is arranged on the end surface of the large end of the outer cylinder; an inner cylinder positioning block with an inner cylinder positioning surface is arranged on the end surface of the large end of the inner cylinder; after the outer cylinder and the inner cylinder are assembled, when the outer cylinder positioning surface and the inner cylinder positioning surface are relatively attached, the outer cylinder temperature measuring holes and the inner cylinder temperature measuring holes are aligned in the circumferential direction;

heating the outer barrel, putting the inner barrel into the outer barrel, and enabling the positioning surface of the outer barrel to be relatively attached to the positioning surface of the inner barrel;

and cooling the extrusion container, wherein the cooling rate of the extrusion container at the small end of the outer barrel and the small end of the inner barrel is greater than that of other parts of the extrusion container.

2. The method of claim 1 wherein the temperature sensing bores are aligned after the container is assembled,

before the outer cylinder positioning block is arranged, an outer cylinder alignment line is scribed on the inner wall of the outer cylinder, passes through the center of the outer cylinder temperature measuring hole, extends along the axial direction and is led out to the end face of the large end of the outer cylinder;

the outer cylinder positioning block is arranged at the outer cylinder alignment line on the end face of the large end of the outer cylinder, and the outer cylinder positioning surface is located in a plane containing the outer cylinder alignment line and the outer cylinder axis;

before the inner cylinder positioning block is arranged, an inner cylinder alignment line is scribed on the outer wall of the inner cylinder, passes through the center of the inner cylinder temperature measuring hole, extends along the axial direction and is led out to the end face of the large end of the inner cylinder;

and arranging the inner cylinder positioning block at the inner cylinder alignment line on the end surface of the large end of the inner cylinder, and enabling the inner cylinder positioning surface to be located in a plane containing the inner cylinder alignment line and the inner cylinder axis.

3. The method according to claim 2, wherein the outer barrel positioning block and the inner barrel positioning block are L-shaped positioning blocks, and the outer barrel positioning surface and the inner barrel positioning surface are surfaces on the long side of the L-shaped positioning block, which are perpendicular to the short side of the L-shaped positioning block and far away from the short side.

4. The method of claim 2 wherein the outer barrel alignment line and the inner barrel alignment line have a line width of no more than 1 mm.

5. The method for aligning temperature measuring holes after the extrusion container is assembled according to claim 1, wherein the axial distance from the center of the temperature measuring hole of the outer cylinder to the limiting step of the concave part is greater than the axial distance from the center of the temperature measuring hole of the inner cylinder to the limiting step of the convex part.

6. The method for aligning the temperature measuring holes after the extrusion container is assembled according to claim 5, wherein the difference between the axial distance from the center of the temperature measuring hole of the outer cylinder to the limiting step of the concave part and the axial distance from the center of the temperature measuring hole of the inner cylinder to the limiting step of the convex part is in the range of 0.5-1 mm.

7. The method of claim 1 wherein the outer barrel is heated using a trolley type box furnace and the assembled container is cooled in the trolley type box furnace.

8. The method for aligning the temperature measuring holes after the extrusion container is assembled according to claim 7, wherein the extrusion container is vertically placed when being cooled, the small end of the outer cylinder and the small end of the inner cylinder are positioned at the lower end of the extrusion container, the furnace door of the trolley type box furnace is upwardly opened, and the furnace door is closed 4/5-3/4 when the extrusion container is cooled.

9. The method for aligning the temperature measuring holes after the extrusion container is assembled according to claim 1, wherein the temperature measuring holes of the outer cylinder and the temperature measuring holes of the inner cylinder are multiple and in one-to-one correspondence.

Technical Field

The invention relates to the field of extrusion container installation, in particular to a method for aligning temperature measuring holes after an extrusion container is assembled.

Background

The heat extruder is an important device for producing metal pipes such as aluminum profiles, wires and cables, oil well pipes, nuclear power pipes and the like. As an important component of the extrusion container, a multi-layer (two-layer or three-layer) large-interference fit combined cylindrical structure including an outer cylinder and an inner cylinder is generally adopted. When the extrusion container is in use, the working temperature in the extrusion container needs to be monitored in real time so as to adjust the heating system in real time, and the temperature of the extrusion container is stabilized within the range required by the temperature of the extrusion process. The temperature monitoring is generally carried out by arranging a temperature measuring hole on the extrusion cylinder, installing a thermocouple, and feeding back a temperature electric signal through the thermocouple to detect the working temperature.

At present, because the temperature measuring holes are processed after the outer cylinder and the inner cylinder are assembled, the defects of high difficulty, high cost and long period exist, the temperature measuring holes are respectively formed on the outer cylinder and the inner cylinder before the outer cylinder and the inner cylinder are assembled, and alignment is carried out during the assembly.

However, in many assembling alignment processes of the current temperature measuring holes, the following defects also exist: when scribing alignment is adopted, observation is inconvenient after the outer cylinder is heated, and the hot-assembly alignment is low in precision and easy to misplace; when the positioning bulge and the positioning groove are adopted for positioning and aligning, after the outer cylinder is heated, the positioning groove deviates from the position of the positioning groove in a normal temperature state due to the thermal expansion effect, and a large gap exists between the positioning groove and the positioning bulge, so that the radial position error of the temperature measuring hole after assembly is large, and the matching precision is low; and the radial position of the temperature measuring hole is adjusted by adopting the radial positioning lifting tool, so that the problems of complex tool installation, large installation error, long operation time, low radial matching precision of the temperature measuring hole and the like exist.

In addition, the above-mentioned process methods also only stay in the assembly, namely the alignment of the radial position of the temperature measuring hole is only considered when the hot-fitting is carried out, and the influence of the cooling process after the hot-fitting is not considered, so that the misalignment of the temperature measuring hole is often found after the actual hot-fitting.

Therefore, there is a need to provide a new method for aligning the temperature measuring holes after the extrusion container is assembled, which solves the above problems.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for aligning temperature measuring holes after assembling a container, which is used for solving the problem that the temperature measuring holes cannot be aligned accurately after assembling the container in the prior art.

To achieve the above and other related objects, the present invention provides a method for aligning temperature measuring holes after assembling a container, comprising the steps of:

providing an outer cylinder and an inner cylinder which are in interference fit with an extrusion cylinder to be assembled; one end of the outer cylinder is a small end of the outer cylinder provided with a concave limiting step, and the other end of the outer cylinder is a large end of the outer cylinder with an equal-diameter opening; one end of the inner cylinder is a small end of the inner cylinder provided with a convex part limiting step, and the other end of the inner cylinder is a large end of the inner cylinder with an equal-diameter opening;

an outer barrel temperature measuring hole is formed in the outer barrel and penetrates through the wall of the outer barrel; an inner cylinder temperature measuring hole is formed in the outer wall of the inner cylinder; after the outer barrel and the inner barrel are assembled, the outer barrel temperature measuring holes and the inner barrel temperature measuring holes are aligned in the axial direction and the circumferential direction;

an outer cylinder positioning block with an outer cylinder positioning surface is arranged on the end surface of the large end of the outer cylinder; an inner cylinder positioning block with an inner cylinder positioning surface is arranged on the end surface of the large end of the inner cylinder; after the outer cylinder and the inner cylinder are assembled, when the outer cylinder positioning surface and the inner cylinder positioning surface are relatively attached, the outer cylinder temperature measuring holes and the inner cylinder temperature measuring holes are aligned in the circumferential direction;

heating the outer barrel, putting the inner barrel into the outer barrel, and enabling the positioning surface of the outer barrel to be relatively attached to the positioning surface of the inner barrel;

and cooling the extrusion container, wherein the cooling rate of the extrusion container at the small end of the outer barrel and the small end of the inner barrel is greater than that of other parts of the extrusion container.

As an alternative of the invention, before the outer cylinder positioning block is arranged, an outer cylinder alignment line is scribed on the inner wall of the outer cylinder, passes through the center of the outer cylinder temperature measuring hole, extends along the axial direction and is led out to the end face of the large end of the outer cylinder; the outer cylinder positioning block is arranged at the outer cylinder alignment line on the end face of the large end of the outer cylinder, and the outer cylinder positioning surface is located in a plane containing the outer cylinder alignment line and the outer cylinder axis; before the inner cylinder positioning block is arranged, an inner cylinder alignment line is scribed on the outer wall of the inner cylinder, passes through the center of the inner cylinder temperature measuring hole, extends along the axial direction and is led out to the end face of the large end of the inner cylinder; and arranging the inner cylinder positioning block at the inner cylinder alignment line on the end surface of the large end of the inner cylinder, and enabling the inner cylinder positioning surface to be located in a plane containing the inner cylinder alignment line and the inner cylinder axis.

As an alternative of the present invention, the outer cylinder positioning block and the inner cylinder positioning block are L-shaped positioning blocks, and the outer cylinder positioning surface and the inner cylinder positioning surface are surfaces perpendicular to and distant from a short side of the L-shaped positioning block on a long side of the L-shaped positioning block.

As an alternative of the present invention, the line width of the outer cylinder alignment line and the inner cylinder alignment line is not more than 1 mm.

As an alternative of the present invention, an axial distance from the center of the outer cylinder temperature measuring hole to the concave part limiting step is greater than an axial distance from the center of the inner cylinder temperature measuring hole to the convex part limiting step.

As an alternative scheme of the invention, the difference range between the axial distance from the center of the outer barrel temperature measuring hole to the concave part limiting step and the axial distance from the center of the inner barrel temperature measuring hole to the convex part limiting step is 0.5-1 mm.

As an alternative of the present invention, the outer tube is heated using a car-type box furnace, and the assembled container is cooled in the car-type box furnace.

As an alternative scheme of the invention, the extrusion container is vertically placed when being cooled, the small end of the outer cylinder and the small end of the inner cylinder are positioned at the lower end of the extrusion container, the furnace door of the trolley type box furnace is upwards opened, and the furnace door is closed 4/5-3/4 when the extrusion container is cooled.

As an alternative scheme of the invention, the outer cylinder temperature measuring holes and the inner cylinder temperature measuring holes are multiple and are in one-to-one correspondence.

As described above, the present invention provides a method for aligning temperature measuring holes after assembling a container, which has the following beneficial effects:

the invention introduces a new method for aligning temperature measuring holes after the assembly of an extrusion cylinder, which is characterized in that the temperature measuring holes are aligned in the axial direction and the circumferential direction by respectively arranging positioning blocks with mutually attached positioning surfaces on an outer cylinder and an inner cylinder; by limiting the cooling conditions of the container after assembly, it is ensured that the alignment of the temperature measuring holes in the axial direction does not shift.

Drawings

Fig. 1 is a flow chart illustrating a method for aligning temperature measuring holes after assembling a container according to an embodiment of the present invention.

Fig. 2 is a sectional view of an outer tub provided in a first embodiment of the present invention.

FIG. 3 is a cross-sectional view of an inner barrel provided in an embodiment of the present invention.

Fig. 4 is a sectional view of an outer cylinder provided with an outer cylinder temperature measuring hole according to a first embodiment of the present invention.

FIG. 5 is a cross-sectional view of an inner barrel temperature measurement hole formed in the inner barrel according to the first embodiment of the present invention.

Fig. 6 is a schematic view illustrating an axial distance of a temperature measuring hole formed in the outer cylinder according to the first embodiment of the present invention.

Fig. 7 is a schematic view illustrating an axial distance of a temperature measuring hole formed in the inner cylinder according to the first embodiment of the present invention.

Fig. 8 is a schematic view illustrating an L-shaped positioning block according to an embodiment of the invention.

Fig. 9 is an end view of the outer cylinder after the outer cylinder positioning block is mounted on the outer cylinder in the first embodiment of the invention.

FIG. 10 is a cross-sectional view along the direction AA in FIG. 9 according to an embodiment of the present invention.

FIG. 11 is an end view of the inner cylinder with the inner cylinder positioning block installed thereon according to the first embodiment of the present invention.

FIG. 12 is a cross-sectional view taken along the direction BB in FIG. 11 according to a first embodiment of the present invention.

FIG. 13 is a sectional view of the outer and inner sleeves initially assembled in accordance with an embodiment of the present invention.

FIG. 14 is a top view of the outer and inner sleeves of one embodiment of the present invention as assembled.

FIG. 15 is a sectional view showing the alignment of the positioning blocks when the outer cylinder and the inner cylinder are assembled in accordance with one embodiment of the present invention.

FIG. 16 is a top view of the outer and inner barrels of the first embodiment of the present invention shown assembled.

FIG. 17 is a sectional view of the outer and inner sleeves after assembly in accordance with one embodiment of the present invention.

Description of the element reference numerals

100 outer cylinder

100a concave part limiting step

101 outer barrel temperature measuring hole

102 outer cylinder positioning block

200 inner cylinder

200a convex part limiting step

201 inner barrel temperature measuring hole

202 inner cylinder positioning block

300L-shaped positioning block

301 long side

301a locating surface

302 short side

S1-S5 Steps 1) -5)

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Please refer to fig. 1 to 17. It should be noted that the drawings provided in the present embodiment are only schematic and illustrate the basic idea of the present invention, and although the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation, the form, quantity and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.