Extrusion mechanism and extruder

Abstract

The utility model discloses an extrusion mechanism and an extruder. The extrusion mechanism comprises a rear beam; the movable beam is arranged opposite to the rear beam; the extrusion rod is arranged on the side, away from the rear beam, of the movable beam and used for extruding the aluminum material; the side cylinder comprises a cylinder body and a piston shaft, the cylinder body is installed on the rear beam, and the piston shaft penetrates through the movable beam to drive the movable beam to move; and the at least one buffer structure is arranged on at least one side of the movable beam and is arranged outside the piston shaft in a sleeving manner, so that the piston shaft drives the extrusion rod to extrude the aluminum material, and when the movable beam deforms, the movable beam deforms under the extrusion of the movable beam so as to absorb the extrusion force generated by the movable beam to the piston shaft. When the extrusion mechanism and the movable beam deform, the buffer structure is extruded, and the buffer structure deforms, so that extrusion force from the movable beam is absorbed, the situation that the piston shaft is extruded due to excessive deformation of the movable beam, the piston shaft is deformed, and the guiding effect between the piston shaft and the cylinder body is affected is avoided, and therefore the service life of the piston shaft is prolonged. And the service life of the oil cylinder is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extrusion mechanism and an extruder. Background Art

[0002] The forming process of aluminum requires high pressure extrusion, such as pressure ranging from 50 tons to 200 tons, to form the aluminum into the desired shape. When extruding the aluminum, the rear beam is fixed and the oil cylinder drives the movable beam to move, so as to drive the extrusion rod installed on the movable beam to extrude the aluminum. However, due to the large driving force of the oil cylinder, the movable beam is subjected to the reaction force of the aluminum, resulting in a small bending deformation of the movable beam. After bending, it will contact and rub with the piston shaft. After long-term use, the piston shaft of the oil cylinder will wear, deform, and even leak oil, thus affecting the quality of the subsequent extruded products. Utility Model Content

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the utility model, an extrusion mechanism is provided, comprising: a rear beam; a movable beam, arranged opposite to the rear beam; an extrusion rod, arranged on the side of the movable beam away from the rear beam, for extruding aluminum material; a side cylinder, comprising a cylinder body and a piston shaft, the cylinder body being installed on the rear beam, and the piston shaft being passed through the movable beam to drive the movable beam to move; at least one buffer structure, arranged on at least one side of the movable beam, and sleeved outside the piston shaft, so that the piston shaft drives the extrusion rod to extrude the aluminum material, and when the movable beam is deformed, it is deformed under the extrusion of the movable beam to absorb the extrusion force generated by the movable beam on the piston shaft.

[0004] In some embodiments, a through hole is provided on the movable beam, and the piston shaft is passed through the through hole and has a gap with the hole wall of the through hole.

[0005] In some embodiments, the gap between the piston shaft and the wall of the through hole is in the range of 1.5 mm to 2.5 mm.

[0006] In some embodiments, the extrusion mechanism includes two buffer structures, and the buffer structures are provided on both the side of the movable beam facing the rear beam and the side away from the rear beam.

[0007] In some embodiments, the buffer structure includes a plastic sleeve, a first metal sleeve and a second metal sleeve, the plastic sleeve is mounted on the piston shaft, the first metal sleeve is mounted on the plastic sleeve and has a gap between the plastic sleeve and the moving beam, the second metal sleeve is mounted outside the piston shaft, and there is spherical contact between the first metal sleeve and the second metal sleeve.

[0008] In some embodiments, there is a gap between the first metal sleeve and the piston shaft.

[0009] In some embodiments, the extrusion mechanism further includes a fixing structure, which is connected to the piston shaft and is arranged on a side of the buffer structure away from the rear beam.

[0010] In some embodiments, the sum of the gaps between the moving beam and the first metal sleeve, between the first metal sleeve and the second metal sleeve, and between the second metal sleeve and the fixing structure ranges from 0.1 mm to 0.2 mm.

[0011] In some embodiments, the fixing structure includes a first fixing sleeve and a second fixing sleeve that are independently arranged. The first fixing sleeve is arranged close to the moving beam and is connected to the piston shaft. The second fixing sleeve is arranged on a side of the first fixing sleeve away from the moving beam and is connected to the first fixing sleeve.

[0012] Another aspect of the present invention provides an extruder, including the above-mentioned extrusion mechanism.

[0013] In summary, the extrusion mechanism and the extruder provided by the present invention have the following technical effects:

[0014] By arranging a buffer structure on the piston shaft and at least one side of the moving beam, when the cylinder block drives the piston shaft to move to drive the extrusion rod on the moving beam to perform an extrusion movement, when the moving beam deforms, it squeezes the buffer structure, and the buffer structure deforms, thereby absorbing the extrusion force from the moving beam, avoiding excessive deformation of the moving beam and causing extrusion to the piston shaft, thus affecting the guiding function between the piston shaft and the cylinder block. In this way, the service life of the oil cylinder is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the extrusion mechanism according to an embodiment of the present invention;

[0016] Figure 2 is Figure 1 an enlarged schematic view of I in

[0017] Figure 3 is Figure 1 an enlarged schematic view of II in

[0018] Drawings: 100 - extrusion mechanism, 10 - rear beam, 20 - moving beam, 21 - through hole, 22 - hole wall, 30 - extrusion rod, 40 - side cylinder, 41 - cylinder block, 42 - piston shaft, 50 - buffer structure, 51 - plastic sleeve, 52 - first metal sleeve, 53 - second metal sleeve, 60 - fixing structure, 61 - first fixing sleeve, 62 - second fixing sleeve. DETAILED DESCRIPTION

[0019] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 3 , an extrusion mechanism 100 provided in an embodiment of the utility model includes a rear beam 10, a movable beam 20, an extrusion rod 30, a side cylinder 40 and at least one buffer structure 50.

[0024] Among them, the rear beam 10 is used to install the oil cylinder; the movable beam 20 and the rear beam 10 are arranged opposite to each other; the extrusion rod 30 is arranged on the side of the movable beam 20 away from the rear beam 10, and is used to extrude the aluminum material; the side cylinder 40 includes a cylinder body 41 and a piston shaft 42, the cylinder body 41 is installed on the rear beam 10, and the piston shaft 42 is passed through the movable beam 20 to drive the movable beam 20 to move; at least one buffer structure 50 is arranged on at least one side of the movable beam 20, and is sleeved outside the piston shaft 42, so that when the piston shaft 42 drives the extrusion rod 30 to extrude the aluminum material, and when the movable beam 20 is deformed, it is deformed under the extrusion of the movable beam 20 to absorb the extrusion force generated by the movable beam 20 on the piston shaft 42.

[0025] The above-mentioned extrusion mechanism 100 is provided with a buffer structure 50 on the piston shaft 42 and on at least one side of the movable beam 20, so that when the cylinder body 41 drives the piston shaft 42 to move to drive the extrusion rod 30 on the movable beam 20 to perform an extrusion movement, the movable beam 20 is deformed to squeeze the buffer structure 50, and the buffer structure 50 is deformed to absorb the extrusion force from the movable beam 20, thereby avoiding excessive deformation of the movable beam 20 to squeeze the piston shaft 42 and cause wear on the piston shaft 42, thereby affecting the guiding effect between the piston shaft 42 and the cylinder body 41, thereby ensuring the service life of the cylinder.

[0026] In order to further protect the piston shaft 42, a through hole 21 is provided on the movable beam 20, and the piston shaft 42 is penetrated through the through hole 21, and has a gap with the hole wall 22 of the through hole 21. In this way, the piston shaft 42 can have a certain movable gap relative to the movable beam 20, that is, when the movable beam 20 is deformed, the piston shaft 42 can have a certain degree of freedom relative to the movable beam 20, so as to reduce the probability of the movable beam 20 squeezing and wearing the piston shaft 42, thereby further protecting the piston shaft 42.

[0027] Among them, the gap between the piston shaft 42 and the hole wall 22 of the through hole 21 ranges from 1.5mm to 2.5mm. In this way, the size of the gap is set so that the piston shaft 42 can have a larger degree of freedom to adapt to the deformation of the movable beam 20, while at the same time ensuring that the degree of freedom of the piston shaft 42 relative to the movable beam 20 is not too large to reduce the quality of the extrusion of the aluminum material when the piston shaft 42 drives the movable beam 20 to extrude the aluminum material.

[0028] The gap between the piston shaft 42 and the hole wall 22 of the through hole 21 may be set to values such as 1.5 mm, 1.8 mm, 2.0 mm, 2.2 mm or 2.5 mm, which is not limited here.

[0029] See also Figure 1 In one embodiment of the utility model, in order to protect the piston shaft 42, the extrusion mechanism 100 includes two buffer structures 50, and the buffer structures 50 are provided on the side of the movable beam 20 facing the rear beam 10 and the side away from the rear beam 10. In this way, when the movable beam 20 is deformed toward the rear beam 10 or away from the rear beam 10, the buffer structure 50 can be squeezed so that the buffer structure 50 receives the squeezing force, thereby strengthening the protection of the piston shaft 42.

[0030] Specifically, see Figure 3, the buffer structure 50 includes a plastic sleeve 51, a first metal sleeve 52, and a second metal sleeve 53. The plastic sleeve 51 is sleeved on the piston shaft 42. The first metal sleeve 52 is sleeved on the plastic sleeve 51 and has a gap with the moving beam 20. The second metal sleeve 53 is sleeved outside the piston shaft 42. The first metal sleeve 52 and the second metal sleeve 53 are in spherical contact. Thus, when the moving beam 20 deforms, the first metal sleeve 52 is extruded. Since the first metal sleeve 52 and the second metal sleeve 53 are in spherical contact, under the extrusion of the moving beam 20, the first metal sleeve 52 can rotate relative to the second metal sleeve 53, enabling the first metal sleeve 52 to have a certain degree of freedom to absorb the extrusion force from the moving beam 20.

[0031] Further, there is a gap between the first metal sleeve 52 and the piston shaft 42, so that the plastic sleeve 51 can have a certain deformation space to adapt to the movement of the first metal sleeve 52 when it is subjected to an extrusion force.

[0032] Among them, the second metal sleeve 53 of this embodiment is connected to the piston shaft 42 and sleeved outside the piston shaft 42, thereby realizing the installation of the second metal sleeve 53.

[0033] Further, the plastic sleeve 51 is made of a material with elastic deformation so that it can return to its original state after deforming under the extrusion of the first metal sleeve 52. For example, it is made of polyurethane.

[0034] Please refer to Figure 1 and Figure 2 , in order to fix the buffer structure 50 or the moving beam 20, the extrusion mechanism 100 further includes a fixing structure 60. The fixing structure 60 is connected to the piston shaft 42 and is arranged on the side of the moving beam 20 away from the rear beam 10. Thus, through the setting of the fixing structure 60, the moving beam 20 is sleeved outside the piston shaft 42 to prevent it from falling off relative to the piston shaft 42.

[0035] Among them, the fixing structure 60 includes a first fixing sleeve 61 and a second fixing sleeve 62 that are independently arranged. The first fixing sleeve 61 is arranged close to the moving beam 20 and is connected to the piston shaft 42. The second fixing sleeve 62 is arranged on the side of the first fixing sleeve 61 away from the moving beam 20. The first fixing sleeve 61 and the second fixing sleeve 62 are bolted together and connected to the first fixing sleeve 61. For example, the first fixing sleeve 61 can be bolted to the piston shaft 42, and the second fixing sleeve 62 can be installed on the first fixing sleeve 61 through bolts. Thus, through the setting of the two fixing sleeves, the buffer structure 50 can be stably locked between the moving beam 20 and the fixing structure 60. The extrusion force is conducted through the first fixing sleeve 61, and the first fixing sleeve 61 is reinforced by the second fixing sleeve 62 to prevent detachment under the extrusion of the extrusion force; by installing the first fixing sleeve 61 and the second fixing sleeve 62 in a detachable manner, it is convenient to replace them after wear during long-term use.

[0036] Further, when a buffer structure 50 is provided on the side of the moving beam 20 facing away from the rear beam 10, the moving beam 20 and the first metal sleeve 52 are in planar fit, the first metal sleeve 52 and the second metal sleeve 53 are in spherical fit, and the second metal sleeve 53 and the fixed structure 60 are in planar fit. A gap can be provided among the three. Specifically, the sum of the gaps between the moving beam 20 and the first metal sleeve 52, between the first metal sleeve 52 and the second metal sleeve 53, and between the second metal sleeve 53 and the fixed structure 60 ranges from 0.1 mm to 0.2 mm. By setting such a gap, the movement space of the piston shaft 42 can be prevented from being too large. If the gap is too large, vibrations and abnormal noises will occur between the moving beam 20 and the piston shaft 42. Also, it can be avoided that the moving beam 20 cannot undergo appropriate deformation due to too small a gap.

[0037] Among them, the three gaps can be set to values such as 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm or 0.2 mm, etc., and are not limited herein.

[0038] In the above-mentioned extrusion mechanism 100, by setting the buffer structure 50 to include a plastic sleeve 51, a first metal sleeve 52 and a second metal sleeve 53, the first metal sleeve 52 and the second metal sleeve 53 are in spherical contact. Thus, when the first metal sleeve 52 is squeezed, it can rotate relative to the first metal sleeve 52 to adapt to the deformation of the moving beam 20. By providing a fixed structure 60 at the end of the piston shaft 42, the moving beam 20 and the buffer structure 50 can be installed on the piston shaft 42 to prevent detachment. At the same time, the fixed structure 60 can also receive the pressure generated by the buffer structure 50 to achieve the effect of absorbing the extrusion force.

[0039] In another embodiment of the present invention, an extruder is further provided, including the above-mentioned extrusion mechanism 100.

[0040] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. Extrusion mechanism (100), characterized in that Comprising: Rear beam (10); Moving beam (20), disposed opposite to the rear beam (10); Extrusion rod (30), disposed on a side of the moving beam (20) facing away from the rear beam (10) for extruding aluminum; Side cylinder (40), including a cylinder block (41) and a piston shaft (42), the cylinder block (41) is mounted on the rear beam (10), and the piston shaft (42) passes through the moving beam (20) to drive the moving beam (20) to move; At least one buffer structure (50), disposed on at least one side of the moving beam (20) and sleeved outside the piston shaft (42), so as to deform under the extrusion of the moving beam (20) when the piston shaft (42) drives the extrusion rod (30) to extrude the aluminum and the moving beam (20) deforms, so as to absorb the extrusion force generated by the moving beam (20) on the piston shaft (42).

2. The extrusion mechanism (100) according to claim 1, characterized in that, A through hole (21) is provided on the moving beam (20), the piston shaft (42) passes through the through hole (21), and there is a gap between the piston shaft (42) and the hole wall (22) of the through hole (21).

3. The extrusion mechanism (100) according to claim 2, wherein, The gap between the piston shaft (42) and the hole wall (22) of the through hole (21) ranges from 1.5 mm to 2.5 mm.

4. The extrusion mechanism (100) according to any one of claims 1-3, characterized in that, The extrusion mechanism (100) includes two of the buffer structures (50), and the buffer structures (50) are provided on both a side of the moving beam (20) facing the rear beam (10) and a side of the moving beam (20) facing away from the rear beam (10).

5. The extrusion mechanism (100) according to claim 4, characterized in that, The buffer structure (50) includes a plastic sleeve (51), a first metal sleeve (52) and a second metal sleeve (53), the plastic sleeve (51) is sleeved on the piston shaft (42), the first metal sleeve (52) is sleeved on the plastic sleeve (51) and has a gap with the moving beam (20), the second metal sleeve (53) is sleeved outside the piston shaft (42), and the first metal sleeve (52) and the second metal sleeve (53) are in spherical contact with each other.

6. The extrusion mechanism (100) according to claim 5, wherein There is a gap between the first metal sleeve (52) and the piston shaft (42).

7. The extrusion mechanism (100) according to claim 5, characterized in that The extrusion mechanism (100) further includes a fixing structure (60), the fixing structure (60) is connected to the piston shaft (42) and is disposed on a side of the buffer structure (50) facing away from the rear beam (10).

8. The extrusion mechanism (100) according to claim 7, characterized in that, The sum of the gaps between the moving beam (20) and the first metal sleeve (52), between the first metal sleeve (52) and the second metal sleeve (53), and between the second metal sleeve (53) and the fixing structure (60) ranges from 0.1 mm to 0.2 mm.

9. The extrusion mechanism (100) according to claim 7 or 8, characterized in that, The fixing structure (60) includes a first fixing sleeve (61) and a second fixing sleeve (62) which are independently arranged, the first fixing sleeve (61) is disposed close to the moving beam (20) and is connected to the piston shaft (42), and the second fixing sleeve (62) is disposed on a side of the first fixing sleeve (61) facing away from the moving beam (20) and is connected to the first fixing sleeve (61).

10. Extruder, characterized in that, Comprising an extrusion mechanism (100) as described in any one of claims 1-9.

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