阅读说明：本技术 挤压生产线及其控制方法 (Extrusion line and control method thereof ) 是由 兰佳文 宋辉 查雨萌 于 2020-03-23 设计创作，主要内容包括：本发明涉及一种挤压生产线及其控制方法,包括：其内设有加热腔的加热炉,加热腔沿其延伸方向可容置至少两根原材；推料机构及送料机构,推料机构用于推动容置于加热腔内的至少两根原材向靠近送料机构的方向移动,送料机构用于将处于其上的原材送至挤压机；推料机构可推动相对靠近送料机构的第一根原材的第一部分移动至送料机构上,第一根原材的第二部分滞留于加热腔内；下压机构,下压机构可施加朝向送料机构的下压力于第一部分上,且在送料机构的动力作用及下压力作用下将第一根原材完全移出加热腔；送料机构具有用于承载第一部分的第一承载面,加热腔内具有用于承载第二部分的第二承载面,第一承载面的高度高于第二承载面的高度。(The invention relates to an extrusion production line and a control method thereof, wherein the extrusion production line comprises the following steps: the heating furnace is internally provided with a heating cavity, and the heating cavity can contain at least two raw materials along the extending direction of the heating cavity; the pushing mechanism is used for pushing at least two raw materials contained in the heating cavity to move towards the direction close to the feeding mechanism, and the feeding mechanism is used for feeding the raw materials on the feeding mechanism to the extruding machine; the material pushing mechanism can push a first part of a first raw material relatively close to the feeding mechanism to move to the feeding mechanism, and a second part of the first raw material is retained in the heating cavity; the pressing mechanism can apply a pressing force towards the feeding mechanism to the first part, and the first raw material is completely moved out of the heating cavity under the power action and the pressing force action of the feeding mechanism; the feeding mechanism is provided with a first bearing surface for bearing the first part, the heating cavity is provided with a second bearing surface for bearing the second part, and the height of the first bearing surface is higher than that of the second bearing surface.)

1. An extrusion line, comprising:

the heating furnace is internally provided with a heating cavity, and the heating cavity can contain at least two raw materials along the extending direction of the heating cavity;

the device comprises a material pushing mechanism arranged at one end of the heating furnace and a feeding mechanism arranged at the other end of the heating furnace, wherein the material pushing mechanism is used for pushing at least two raw materials contained in the heating cavity to move towards the direction close to the feeding mechanism, and the feeding mechanism is used for feeding the raw materials on the material pushing mechanism to an extruder; the material pushing mechanism can push a first part of a first raw material relatively close to the feeding mechanism to move to the feeding mechanism, and a second part of the first raw material is retained in the heating cavity;

a pressing mechanism capable of applying a pressing force to the first portion toward the feeding mechanism and moving the first log completely out of the heating chamber under the power of the feeding mechanism and the pressing force;

the feeding mechanism is provided with a first bearing surface for bearing the first part, the heating cavity is internally provided with a second bearing surface for bearing the second part, and the height of the first bearing surface is higher than that of the second bearing surface.

2. The extrusion line of claim 1, wherein the feed mechanism comprises at least two drive rolls, all of which are arranged in sequence along the direction of movement of the log;

wherein, the first bearing surface is formed on the driving roller.

3. The extrusion line of claim 1 wherein the hold-down mechanism is switchable between a hold-down state and a disengaged state relative to the feed mechanism;

wherein, in the depressed state, the depressing mechanism can exert the depressing force on the first portion; in the disengaged state, the hold-down mechanism may be disengaged from the first portion.

4. The extrusion line of claim 3, wherein the hold-down mechanism includes a first driver and a hold-down member, the hold-down member being connected to a drive end of the first driver, the first driver being configured to drive the hold-down member to switch between the hold-down state and the disengaged state;

wherein, in the depressed state, the hold-down member can exert the hold-down force on the first portion; in the disengaged state, the hold-down may be disengaged from the first portion.

5. The extrusion line of claim 4, wherein the hold-down mechanism further comprises a mounting base and a supporting member, wherein one end of the first driving member is hinged to the mounting base, one end of the supporting member is fixedly connected to the mounting base, and the hold-down member is hinged to the other end of the first driving member and the other end of the supporting member;

the first driving piece is used for driving the pressing piece to rotate so as to switch between the pressing state and the separation state.

6. The extrusion line of claim 5, wherein the support member is disposed between the feed mechanism and the first drive member, the first drive member exerting an upward pushing force on the lower member;

the first driving part is a driving cylinder, and when the first driving part is in a pressing state, the first driving part is parallel to the supporting part, and the pressing part is perpendicular to the first driving part and the supporting part.

7. The extrusion line of claim 4, wherein the hold-down member includes a hold-down bar connected to the drive end of the first drive member and a driven roller mounted to the hold-down end of the hold-down bar for applying the hold-down force to the first portion.

8. The extrusion line of claim 7, wherein the lower member further comprises two high temperature bearings disposed opposite and at an interval, the high temperature bearings are both assembled at the lower pressing end of the lower pressing rod, and both ends of the driven roller are respectively assembled in the two high temperature bearings.

9. The extrusion line of any one of claims 1-8, wherein the pusher mechanism comprises a second driving member and a push rod, the push rod is connected with a driving end of the second driving member, and the second driving member is used for providing a driving force for the push rod to push the log;

the pushing mechanism further comprises a displacement sensor, and the displacement sensor is used for controlling the second driving piece to drive the movement stroke of the push rod.

10. A method of controlling an extrusion line, comprising the steps of:

controlling the material pushing mechanism to move at least two raw materials contained in the heating furnace to the direction close to the feeding mechanism;

when a first part of a first raw material relatively close to the feeding mechanism moves from the heating furnace to a first bearing surface of the feeding mechanism, controlling the pushing mechanism to stop acting; the second part of the first log stays in a heating cavity of the heating furnace, a second bearing surface for bearing the second part is arranged in the heating cavity, and the height of the first bearing surface is higher than that of the second bearing surface;

and controlling a pressing mechanism to apply a pressing force on the first part, and completely moving the first raw material out of the heating furnace under the power action of the feeding mechanism and the pressing force provided by the pressing mechanism.

Technical Field

The invention relates to the technical field of production equipment, in particular to an extrusion production line and a control method thereof.

Background

In an extrusion line, an extruder needs to heat and keep raw materials (such as light alloy (aluminum alloy, copper alloy and magnesium alloy) pipes, bars and profiles) to a certain temperature before extrusion, and therefore, a heating furnace is generally arranged in front of the extruder to heat and keep the raw materials.

In a traditional extrusion production line, an induction heating furnace (generally called as a short furnace) can only heat one raw material, in the heating process, a front-end furnace door is closed, a travel switch is arranged on the furnace door, a rear-end pushing mechanism pushes the material into the furnace, after the raw material is pushed to the travel switch, the pushing mechanism stops pushing the material, and a temperature measuring needle in the furnace detects the temperature and starts heating. After heating is finished, after the extruder extrudes a previous raw material, a furnace door of the heating furnace is opened, the pushing mechanism pushes the material to be discharged onto the front-end feeding mechanism, when the raw material is completely pushed onto the feeding mechanism, the pushing mechanism stops moving, the feeding mechanism sends the raw material into the extruder, and the pushing mechanism retracts to complete a cycle. However, in this way, when the heating furnace heats the raw material with a short length, more than half of the space at the rear end is not utilized, so that the heating speed of the heating furnace is not matched with the fastest extrusion speed of the extruder, and the actual extrusion speed of the extruder is slower.

Aiming at the mode, one improved scheme is as follows: two raw materials are heated in the heating furnace simultaneously, after heating, the pushing mechanism pushes the second raw material, and the second raw material pushes the first raw material to be discharged. In order to ensure that the first raw material is completely pushed onto the feeding mechanism, the second raw material close to the pushing mechanism is pushed into the furnace again to be heated by the back-jacking mechanism after the second raw material is discharged from the furnace end face (the end face of the heating furnace close to the feeding mechanism) for a certain distance, and as sliding friction exists between the raw material and the heating furnace, the resistance is large, the force provided by the back-jacking mechanism is large, a hydraulic station is needed, and therefore the installation space is limited and the structure of the whole extrusion production line is complex.

Disclosure of Invention

Therefore, it is necessary to provide an extrusion line and a control method thereof, which can improve the extrusion rate of the extruder and have a simple structure, in order to solve the problems of the conventional extrusion line that the extrusion rate of the extruder is slow and the structure of the extrusion line is complicated.

An extrusion line comprising:

the heating furnace is internally provided with a heating cavity, and the heating cavity can contain at least two raw materials along the extending direction of the heating cavity;

the device comprises a material pushing mechanism arranged at one end of the heating furnace and a feeding mechanism arranged at the other end of the heating furnace, wherein the material pushing mechanism is used for pushing at least two raw materials contained in the heating cavity to move towards the direction close to the feeding mechanism, and the feeding mechanism is used for feeding the raw materials on the material pushing mechanism to an extruder; the material pushing mechanism can push a first part of a first raw material relatively close to the feeding mechanism to move to the feeding mechanism, and a second part of the first raw material is retained in the heating cavity;

a pressing mechanism capable of applying a pressing force to the first portion toward the feeding mechanism and moving the first log completely out of the heating chamber under the power of the feeding mechanism and the pressing force;

the feeding mechanism is provided with a first bearing surface for bearing the first part, the heating cavity is internally provided with a second bearing surface for bearing the second part, and the height of the first bearing surface is higher than that of the second bearing surface.

In one embodiment, the feeding mechanism comprises at least two driving rollers, and all the driving rollers are sequentially arranged along the moving direction of the log;

wherein the bearing surface is formed on the driving roller.

In one embodiment, the pressing mechanism is switchable between a pressed state and a separated state with respect to the feeding mechanism;

wherein, in the depressed state, the depressing mechanism can exert the depressing force on the first portion; in the disengaged state, the hold-down mechanism may be disengaged from the first portion.

In one embodiment, the pressing mechanism comprises a first driving member and a pressing member, the pressing member is connected with a driving end of the first driving member, and the first driving member is used for driving the pressing member to switch between the pressing state and the separation state;

wherein, in the depressed state, the hold-down member can exert the hold-down force on the first portion; in the disengaged state, the hold-down may be disengaged from the first portion.

In one embodiment, the pressing mechanism further comprises a mounting seat and a supporting member, one end of the first driving member is hinged to the mounting seat, one end of the supporting member is fixedly connected to the mounting seat, and the pressing member is hinged to the other end of the first driving member and the other end of the supporting member;

the first driving piece is used for driving the pressing piece to rotate so as to switch between the pressing state and the separation state.

In one embodiment, the supporting member is arranged between the feeding mechanism and the first driving member, and the first driving member applies upward thrust to the lower pressing member;

the first driving part is a driving cylinder, and when the first driving part is in a pressing state, the first driving part is parallel to the supporting part, and the pressing part is perpendicular to the first driving part and the supporting part.

In one embodiment, the down-pressing member comprises a down-pressing rod and a driven roller, the down-pressing rod is connected with the driving end of the first driving member, and the driven roller is assembled at the down-pressing end of the down-pressing rod and used for applying the down-pressing force on the first portion.

In one embodiment, the lower pressing piece further comprises two opposite high-temperature-resistant bearings arranged at intervals, the high-temperature-resistant bearings are assembled at the lower pressing end of the lower pressing rod, and two ends of the driven roller are respectively assembled in the two high-temperature-resistant bearings.

In one embodiment, the pushing mechanism comprises a second driving piece and a push rod, the push rod is connected with the driving end of the second driving piece, and the second driving piece is used for providing a driving force for the push rod to push the raw material;

the pushing mechanism further comprises a displacement sensor, and the displacement sensor is used for controlling the second driving piece to drive the movement stroke of the push rod.

A method of controlling an extrusion line comprising the steps of:

controlling the material pushing mechanism to move at least two raw materials contained in the heating furnace to the direction close to the feeding mechanism;

when a first part of a first raw material relatively close to the feeding mechanism moves from the heating furnace to a first bearing surface of the feeding mechanism, controlling the pushing mechanism to stop acting; the second part of the first log stays in a heating cavity of the heating furnace, a second bearing surface for bearing the second part is arranged in the heating cavity, and the height of the first bearing surface is higher than that of the second bearing surface;

and controlling a pressing mechanism to apply a pressing force on the first part, and completely moving the first raw material out of the heating furnace under the power action of the feeding mechanism and the pressing force provided by the pressing mechanism.

According to the extrusion production line and the control method thereof, the heating furnace can simultaneously accommodate at least two raw materials to heat and preserve heat of the raw materials, so that the heating speed of the heating furnace is ensured to be matched with the fastest extrusion speed of the extruder, and the actual extrusion speed of the extruder is improved. Meanwhile, the pushing mechanism pushes the first part of the first raw material to the first bearing surface of the feeding mechanism, the pressing mechanism applies downward force to the first part, and a structure similar to a lever is formed between the first part and the second part due to the fact that the height of the first bearing surface is higher than that of the second bearing surface. When the downward pressing mechanism applies downward pressure on the first part, at least part of gravity applied to the second bearing surface by the second part can be counteracted, the friction force between the first log and the cavity wall of the heating cavity is reduced, and finally the first log is completely pulled out of the heating cavity under the power action of the feeding mechanism and the downward pressure provided by the downward pressing mechanism. In the mode, the pushing mechanism can not push the second raw material out of the furnace end face (the second raw material is away from the furnace end face by a certain distance), and a back-jacking mechanism with a complex structure is not needed, so that the structure of the extrusion production line is simplified.

Drawings

FIG. 1 is a top view of an extrusion line provided in accordance with one embodiment of the present invention;

FIG. 2 is an isometric view of the extrusion line shown in FIG. 1;

FIG. 3 is a schematic view of the furnace of the extrusion line shown in FIG. 1 when heating a gauge of log;

FIG. 4 is a schematic view of the furnace of the extrusion line shown in FIG. 1 heating another gauge log;

FIG. 5 is a view of the combination of the hold-down mechanism and the feed mechanism of the extrusion line shown in FIG. 1;

FIG. 6 is an isometric view of the hold-down mechanism shown in FIG. 5;

FIG. 7 is a front view of the hold-down mechanism shown in FIG. 6;

fig. 8 is a flowchart of a control method of an extrusion line according to an embodiment of the present invention.

100. An extrusion production line; 10. heating furnace; 11. a heating cavity; 111. a second bearing surface; 12. a temperature measuring part; 20. a material pushing mechanism; 21. a second driving member; 22. a push rod; 31. a first bearing surface; 32. a drive roll; 40. a pressing mechanism; 41. a first driving member; 42. a push-down member; 421. a lower pressure lever; 422. a driven roller; 423. a high temperature resistant bearing; 43. a support member; 44. a mounting seat; a. a first aluminum bar; b. and a second aluminum bar.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention provides an extrusion line 100, and specifically, the extrusion line 100 may be used to extrude an aluminum bar or a raw material of the type thereof, and the following takes an extruded aluminum bar as an example to describe the technical solution of the present invention in detail. The present embodiment is merely exemplary and does not limit the technical scope of the present invention. In addition, the drawings in the embodiments omit unnecessary components and clearly show the technical features of the invention.

With continued reference to fig. 1, the extrusion line 100 includes a heating furnace 10, the heating furnace 10 has a heating chamber 11, and at least two aluminum bars can be accommodated in the heating chamber 11 along the extending direction thereof for heating at least two aluminum bars simultaneously. In one embodiment, the furnace 10 is an induction furnace 10, i.e. an aluminum bar is heated by providing an induction coil in the heating chamber 11. It is understood that in other embodiments, the heating furnace 10 may also be heated by other heating methods, and is not limited herein.

The extrusion line 100 further includes a material pushing mechanism 20 and a feeding mechanism (not shown), the material pushing mechanism 20 is disposed at one end of the heating furnace 10, the feeding mechanism is disposed at the other end of the heating furnace 10, the material pushing mechanism 20 is configured to push at least two aluminum bars accommodated in the heating cavity 11 to move toward a direction close to the feeding mechanism, and the feeding mechanism is configured to feed the aluminum bars to an extruder (not shown) for extrusion. In the extrusion line 100 provided in this embodiment, when the pushing mechanism 20 pushes the aluminum bar accommodated in the heating cavity 11 to move toward the feeding mechanism, the pushing mechanism 20 contacts the end surface of the aluminum bar far away from one end of the feeding mechanism and applies an acting force to the aluminum bar, so that all the aluminum bars move toward the feeding mechanism under the acting force applied by the pushing mechanism 20.

The first aluminum bar a relatively close to the feeding mechanism in all the aluminum bars has a first part and a second part which are connected with each other, the material pushing mechanism 20 can push the first part of the first aluminum bar to move out of the heating cavity 11 to the feeding mechanism, and the second part is still retained in the heating cavity 11. The feeding mechanism has a first bearing surface 31 for bearing the first portion, a second bearing surface 111 for bearing the second portion is arranged in the heating cavity 11, and the height of the first bearing surface 31 is higher than that of the second bearing surface 111. The extrusion line 100 further comprises a pressing mechanism 40 (see fig. 2), wherein the pressing mechanism 40 can apply a pressing force Fx toward the feeding mechanism to the first portion of the first aluminum bar a, and the first aluminum bar is completely moved out of the heating cavity 11 under the power of the feeding mechanism and the pressing force Fx of the pressing mechanism 40.

According to the extrusion production line 100 provided by the embodiment of the invention, the heating furnace 10 can simultaneously accommodate at least two aluminum bars to heat and preserve heat of the aluminum bars, so that the heating speed of the heating furnace 10 is ensured to be matched with the fastest extrusion speed of the extruder, and the actual extrusion speed of the extruder is improved. Meanwhile, the pushing mechanism 20 pushes the first part of the first aluminum bar a to the first bearing surface 31 of the feeding mechanism, the pressing mechanism 40 applies a pressing force Fx on the first part of the first aluminum bar, and the height of the second part is higher than that of the first part (at this time, the first aluminum bar a is obliquely arranged) because the height of the first bearing surface 31 is higher than that of the second bearing surface 111, and a structure similar to a lever is formed between the first part and the second part at this time. When the pressing mechanism 40 applies the downward force Fx on the first portion, at least a part of the gravity applied to the second bearing surface 111 by the second portion is counteracted, so that the friction force between the first aluminum rod a and the cavity wall of the heating cavity 11 is reduced, and finally, the first aluminum rod a is completely pulled out of the heating cavity 11 under the power action of the feeding mechanism and the downward force Fx provided by the pressing mechanism 40 (due to the effect of the downward force Fx, the friction force between the first aluminum rod a and the feeding mechanism is increased, and the first aluminum rod a is easy to completely pull out of the heating furnace 10). In this way, the pushing mechanism 20 does not push the second aluminum rod b out of the furnace end face (the second aluminum rod b is a certain distance away from the furnace end face), and a back-pushing mechanism with a complicated structure is not required, so that the structure of the extrusion line 100 is simplified.

It should be noted that, in order to ensure that the pushing mechanism 20 can push the first portion of the first aluminum bar a onto the feeding mechanism, the first bearing surface 31 is only slightly higher than the second bearing surface 111, that is, the height of the first bearing surface 31 higher than the second bearing surface 111 is within a certain preset range.

In one embodiment, two aluminum bars are placed in the heating chamber 11 of the heating furnace 10 in contact with each other for heating the two aluminum bars at the same time. If the length of the heating cavity 11 is 1600mm and the length of the aluminum bar is 650mm-780mm, two connected aluminum bars can be accommodated in the heating cavity 11 at the same time. It is understood that in other embodiments, three or more than three contiguous aluminum bars may be received in the heating cavity 11 of the heating furnace 10 at the same time, so as to heat three or more than three contiguous aluminum bars at the same time. Specifically, the length of the heating chamber 11 may be set according to the aluminum bar to be heated.

For convenience of explanation, the technical solution of the present invention will be described in more detail below with reference to the heating chamber 11 of the heating furnace 10 capable of accommodating two aluminum bars connected to each other at the same time.

In one embodiment, the cross-sectional shape of the heating chamber 11 is circular, so that the cylindrical aluminum rod can be accommodated and heated in the heating chamber 11. It is contemplated that in other embodiments, the cross-sectional shape of the heating cavity 11 may be other conceivable shapes, such as a square or a diamond, and the like, without limitation.

In one embodiment, the heating furnace 10 includes a furnace body and a furnace door, the heating cavity 11 is formed in the furnace body, the furnace door is mounted on the furnace body and controls to open and close the heating cavity 11, when the furnace door opens the heating cavity 11, the material pushing mechanism 20 can push the first portion of the first aluminum rod a out of the heating cavity 11, and when the furnace door is closed, the material pushing mechanism 20 cannot push the first aluminum rod a out of the heating cavity 11.

Further, the heating furnace 10 further includes a travel switch and a temperature measuring element 12 (see fig. 3 and 4), the travel switch is mounted on the furnace door, and when the furnace door is closed, the travel switch is disposed facing one side of the heating chamber 11, and the temperature measuring element 12 is disposed in the heating chamber 11 for detecting the temperature in the heating chamber 11. Specifically, after the first aluminum bar a completely exits the furnace, the furnace door is closed, a certain distance is left between the second aluminum bar b and the furnace door, and at this time, the pushing mechanism 20 can push the newly added third aluminum bar into the heating cavity 11. In the process that the pushing mechanism 20 pushes the third aluminum rod, the third aluminum rod abuts against the second aluminum rod retained in the heating chamber 11, and under the continuous pushing of the pushing mechanism 20, the second aluminum rod and the third aluminum rod move together in the direction close to the oven door, and after the second aluminum rod abuts against the travel switch, the pushing mechanism 20 stops. Then, the temperature measuring component 12 in the furnace starts measuring the temperature and heats the aluminum bar in the heating cavity 11 according to the requirement.

It should be noted that, in this embodiment, the third aluminum bar is pushed into the heating cavity 11 by the material pushing mechanism 20, in some other embodiments, the third aluminum bar is pushed into the heating cavity 11 by another mechanism, and the material pushing mechanism 20 only plays a role of pushing the aluminum bar located in the heating cavity 11 out of the heating cavity 11.

With continued reference to fig. 3 and 4, in one embodiment, the furnace 10 is heated by an induction coil. Specifically, the induction coil includes 6 rolls, each roll is provided with a temperature sensing element, and when two aluminum bars are heated in the heating chamber 11 at the same time, each 3 rolls of the induction coil correspondingly heat one of the aluminum bars.

With continued reference to fig. 1 and fig. 2, in an embodiment, the pushing mechanism 20 includes a second driving member 21 and a pushing rod 22, the pushing rod 22 is connected to a driving end of the second driving member 21, and the second driving member 21 is used for providing a driving force for the pushing rod 22 to push the aluminum bar. Specifically, the second driving member 21 is a servo motor, and the movement stroke of the push rod 22 is controlled by controlling the rotation of the servo motor, so as to control the distance that the push rod 22 pushes the aluminum bar.

The pushing mechanism 20 further includes a displacement sensor (not shown) for controlling the movement stroke of the second driving member 21 driving the push rod 22, so as to control the distance that the push rod 22 pushes the aluminum bar.

The feeding mechanism comprises at least two driving rollers 32, all the driving rollers 32 are sequentially arranged along the moving direction of the aluminum bar, and a first bearing surface 31 of the feeding mechanism is formed on the driving rollers 32. When the first portion of the first aluminum bar a moves onto the first carrying surface 31, the first aluminum bar a is completely moved out of the heating cavity 11 under the power of the driving roller 32 and the downward pressure Fx of the downward pressing mechanism 40, and after the first aluminum bar a is completely moved out of the heating cavity 11, the driving roller 32 drives the first aluminum bar a to move and convey the first aluminum bar a to the extruding machine for extrusion.

In one embodiment, the hold-down mechanism 40 is switchable between a hold-down state and a disengaged state relative to the feed mechanism. The pressing mechanism 40 can apply a pressing force Fx to the first aluminum bar a in the pressing state, and the pressing mechanism 40 can be separated from the first aluminum bar a in the separating state. Thus, when the aluminum bar is not moved out of the heating furnace 10, the pressing mechanism 40 is controlled to be in a separated state, and the pressing mechanism 40 cannot interfere with the movement of the aluminum bar out of the heating furnace 10; when the part of the aluminum bar is moved out of the heating furnace 10 to the feeding mechanism, the pressing mechanism 40 is controlled to be in a pressing state to apply a pressing force Fx to the aluminum bar, so as to ensure that the aluminum bar is finally and completely moved out of the heating furnace 10.

Referring to fig. 5, the pressing mechanism 40 includes a first driving member 41 and a pressing member 42, the pressing member 42 is connected to a driving end of the first driving member 41, and the first driving member 41 is configured to drive the pressing member 42 to switch between a pressing state and a separating state. In the pressed state, the pressing member 42 can exert the pressing force Fx on the first aluminum bar a, and in the separated state, the pressing member 42 can be separated from the first aluminum bar a. Specifically, the first driving member 41 is a driving cylinder, and the push-down member 42 is driven to switch between the push-down state and the separated state by extension and contraction of a piston rod of the driving cylinder. It is understood that in other embodiments, the first driving member 41 can also select a driving motor, which is not limited herein.

Referring to fig. 6 and 7, the down-pressing member 42 includes a down-pressing rod 421 and a driven roller 422, the down-pressing rod 421 is connected to the driving end of the first driving member 41, and the driven roller 422 is mounted on the down-pressing end of the down-pressing rod 421 for applying a down-pressing force Fx to the first aluminum bar a. In this way, during the process of completely removing the aluminum bar from the heating furnace 10, the friction force between the aluminum bar and the pressing mechanism 40 is reduced, and the aluminum bar is conveniently and completely removed from the heating furnace 10.

The lower pressing piece 42 further comprises two opposite high-temperature-resistant bearings 423 arranged at intervals, the high-temperature-resistant bearings 423 are assembled at the pressing end of the lower pressing rod 421, and two ends of the driven roller 422 are respectively assembled in the two high-temperature-resistant bearings 423. Because the driven roller 422 is in direct contact with the aluminum bar in the process of applying the downward pressure Fx to the aluminum bar, two ends of the driven roller 422 are respectively assembled in the two high temperature resistant bearings 423, the high temperature resistant bearings 423 can bear the high temperature transmitted by the driven roller 422, and the service life of the whole downward pressing mechanism 40 is prolonged.

With reference to fig. 6 and 7, the pressing mechanism 40 further includes a mounting seat 44 and a supporting member 43, one end of the first driving member 41 is hinged to the mounting seat 44, one end of the supporting member 43 is fixedly connected to the mounting seat 44, the pressing member 42 is hinged to the other end of the first driving member 41 and the other end of the supporting member 43, and the first driving member 41 is configured to drive the pressing member 42 to rotate so as to switch between a pressing state and a separating state. Thus, the mounting seat 44 serves as a mounting base for the first driving member 41 and the supporting member 43; and due to the arrangement of the supporting piece 43, the first driving piece 41 can drive the lower pressing piece 42 to be smoothly switched between the pressing state and the separation state. It is contemplated that in other embodiments, mount 44 and support 43 may be omitted from hold-down mechanism 40.

Further, the supporting member 43 is disposed between the feeding mechanism and the first driving member 41, the first driving member 41 applies an upward pushing force Ft (see fig. 5) to the pressing member 42, in a pressing state, the first driving member 41 is parallel to the supporting member 43, and the pressing member 42 is perpendicular to both the first driving member 41 and the supporting member 43.

Because the first driving member 41 is hinged to the mounting seat 44, the first driving member 41 is hinged to the lower pressing member 42, and the lower pressing member 42 is hinged to the supporting member 43, when the first driving member 41 applies an upward pushing force Ft to the lower pressing member 42, the first driving member 41 is hinged to the mounting seat 44, the lower pressing member 42 is hinged to the first driving member 41, and the lower pressing member 42 is hinged to the supporting member 43, the first driving member 41 is hinged to the mounting seat 44, the lower pressing member 42 is hinged to the first driving member 41, the first driving member 42 is hinged to the supporting member 43, and the first driving member 41 is parallel to the supporting member 43 in a pressing state, and the lower pressing member 42 is perpendicular to the first driving member 41 and the supporting member 43.

Specifically, in the pressing state, the piston rod of the driving cylinder extends out of the limit stroke, that is, when the driving cylinder is in the limit stroke, the first driving member 41 is parallel to the supporting member 43, and the pressing member 42 is perpendicular to both the first driving member 41 and the supporting member 43, so that the limit stroke of the driving cylinder corresponds to the pressing state of the pressing mechanism 40, and the control is convenient.

Referring to fig. 8, an embodiment of the present invention further provides a method for controlling an extrusion line 100, including the steps of:

s110: controlling the material pushing mechanism 20 to move at least two raw materials contained in the heating furnace 10 towards the direction close to the feeding mechanism;

specifically, the raw material that the heating furnace 10 accommodates and heats is an aluminum bar. In other embodiments, the raw material may also be other types of light alloy tubes, rods or profiles, which are not limited herein.

S120: when a first part of a first raw material relatively close to the feeding mechanism moves from the heating furnace to a first bearing surface 31 of the feeding mechanism, controlling the pushing mechanism 20 to stop acting; wherein, the second part of the first log is retained in the heating cavity 11 of the heating furnace 10, a second bearing surface 111 for bearing the second part is arranged in the heating cavity 11, and the height of the first bearing surface 31 is higher than that of the second bearing surface 111;

s130: and controlling the pressing mechanism 40 to apply a pressing force Fx on the first part, and completely moving the first raw material out of the heating furnace 10 under the power action of the feeding mechanism and the pressing force Fx provided by the pressing mechanism 40.

According to the control method of the extrusion production line 100 provided by the embodiment of the invention, the heating furnace 10 can simultaneously accommodate at least two raw materials to heat and preserve heat of the raw materials, so that the heating speed of the heating furnace 10 is ensured to be matched with the fastest extrusion speed of the extruder, and the actual extrusion speed of the extruder is improved. Meanwhile, the pushing mechanism 20 pushes the first part of the first log to the first bearing surface 31 of the feeding mechanism, the pressing mechanism 40 applies a pressing force Fx on the first part of the first log, and since the height of the first bearing surface 31 is higher than that of the second bearing surface 111, a structure similar to a lever is formed between the first part and the second part. When the pressing mechanism 40 applies the downward force Fx on the first portion, at least part of the gravity force applied to the second bearing surface 111 by the second portion is counteracted, so that the friction force between the first log and the wall of the heating chamber 11 is reduced, and finally the first log is completely pulled out of the heating chamber 11 under the power of the feeding mechanism and the downward force Fx provided by the pressing mechanism 40. In this way, the pushing mechanism 20 does not push the second raw material out of the furnace end surface (the second raw material is a certain distance away from the furnace end surface), and a back-pushing mechanism with a complicated structure is not required, so that the structure of the extrusion line 100 is simplified.

In some embodiments, after step S130, the method further comprises the steps of:

the furnace door is controlled to be closed, the push rod 22 of the pushing mechanism 20 retracts, and the pushing mechanism 20 pushes the third raw material into the heating furnace 10. Under the pushing of the pushing mechanism 20, the third raw material abuts against the second raw material retained in the heating chamber 11, the second raw material and the third raw material move together in the direction close to the oven door, and after the second raw material abuts against the travel switch, the pushing mechanism 20 stops. Then, the temperature measuring component 12 in the furnace starts measuring the temperature and heats the raw material in the heating cavity 11 according to the requirement.

It should be noted that, in the present embodiment, for convenience of description, although the first raw material, the second raw material and the third raw material are defined, only two raw materials are heated while being accommodated in the heating chamber 11. Meanwhile, it is understood that, in other embodiments, the heating furnace 10 may heat three logs or more than three logs at the same time, which is not limited herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.