CN113290070A - Elastic fixing extrusion pad for aluminum extruder - Google Patents
Elastic fixing extrusion pad for aluminum extruder Download PDFInfo
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- CN113290070A CN113290070A CN202110528291.1A CN202110528291A CN113290070A CN 113290070 A CN113290070 A CN 113290070A CN 202110528291 A CN202110528291 A CN 202110528291A CN 113290070 A CN113290070 A CN 113290070A
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- extrusion pad
- fixed
- fixed extrusion
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- inner sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
Abstract
The invention belongs to the field of aluminum and aluminum alloy extrusion processing equipment, and particularly relates to an elastic fixed extrusion pad for an aluminum extruder. The invention comprises a fixed extrusion pad chip, a fixed extrusion pad mandrel, a fixed extrusion pad outer sleeve, a reset mechanism, a mandrel nut and a fixed extrusion pad inner sleeve. The extrusion device is simple in structure, the extrusion pad can be completely opened during extrusion, the diameter of the outer circle of the fixed extrusion pad outer sleeve is equal to that of the inner circle of the extrusion container, and the wall of the extrusion container is clean during extrusion; after extrusion is finished, the extrusion device rapidly restores to an initial state under the action of the reset mechanism, the outer circle of the fixed extrusion pad outer sleeve is smaller than the diameter of the inner circle of the extrusion cylinder, aluminum is not scraped in the return process, and the fixed extrusion pad outer sleeve is free of abrasion. The invention improves the structure of the fixed extrusion pad mandrel, reduces stress concentration and prolongs the service life of the fixed extrusion pad mandrel. Meanwhile, the weight of the quick-wear part fixed extrusion pad outer sleeve and the fixed extrusion pad core shaft is greatly reduced, and the use cost of the fixed extrusion pad is reduced.
Description
Technical Field
The invention belongs to the field of aluminum and aluminum alloy extrusion processing equipment, and particularly relates to an elastic fixed extrusion pad for an aluminum extruder.
Background
The elastic fixed extrusion pad for the aluminum extrusion machine in the prior art can ensure that the extrusion pad is completely opened when the equipment is used, the wall of the extrusion cylinder is clean in the extrusion process, and the problem of aluminum return in actual production is effectively solved. However, it has the following problems:
(1) because the section of the mandrel is excessively sudden, the bearing load is large, and the mandrel is easy to break and damage due to stress concentration after being stressed, so that the integral replacement of the mandrel is caused, the service life is shortened, and the production cost is increased.
(2) Can ensure that fixed dummy block opens completely among the extrusion process, nevertheless fixed dummy block still keeps the open mode certain time after the extrusion finishes, can't resume initial condition in the short time for at the extrusion stem return in-process, fixed dummy block overcoat excircle still equals with the interior circle diameter of recipient, causes fixed dummy block to return the in-process and scrapes aluminium, and makes the wearing and tearing of fixed dummy block overcoat serious, influences extrusion production.
Disclosure of Invention
The invention provides an elastic fixed extrusion pad for an aluminum extrusion machine, which aims to solve the problems that a mandrel is easy to damage and the fixed extrusion pad cannot recover to an initial state in a short time after extrusion.
In order to achieve the purpose, the invention adopts the technical scheme that:
an elastic fixed extrusion pad for an aluminum extrusion machine comprises a fixed extrusion pad chip, a fixed extrusion pad mandrel, a fixed extrusion pad outer sleeve, a reset mechanism, a mandrel nut and a fixed extrusion pad inner sleeve; the fixed extrusion pad chip is sleeved at one end of a fixed extrusion pad mandrel, and one end of a fixed extrusion pad inner sleeve is sleeved at the other end of the fixed extrusion pad mandrel through a mandrel nut; a gap is reserved between the fixed extrusion pad chip and the fixed extrusion pad inner sleeve; one end of the resetting mechanism is arranged in the fixed extrusion pad inner sleeve, and the other end of the resetting mechanism is contacted with the fixed extrusion pad chip; the fixed extrusion pad inner sleeve is detachably connected in the fixed extrusion pad outer sleeve, and the outer side wall of the fixed extrusion pad chip is in contact with the inner side wall of the fixed extrusion pad outer sleeve.
The anti-loosening device also comprises a mandrel anti-loosening element and an inner sleeve anti-loosening element; the mandrel anti-loosening piece is arranged between the fixed extrusion pad mandrel and the mandrel nut; the inner sleeve anti-loosening element is arranged between the fixed extrusion pad inner sleeve and the fixed extrusion pad outer sleeve.
The mandrel anti-loosening element and the inner sleeve anti-loosening element are pins.
The fixed extrusion pad chip is of a circular truncated cone structure with a through hole in the center; the through hole is composed of a front part and a rear part, the rear part is a circular through hole, the front part is a conical through hole, and one end with a large outer diameter is positioned at the front end.
The outer sleeve of the fixed extrusion cushion is in a hollow cylindrical shape, and the hollow part consists of a front part, a middle part and a rear part which are different in shape; the middle part and the rear part are both circular, the inner diameter of the middle part is smaller than that of the rear part, and the front part is in a horn shape matched with the shape of the outer side wall of the fixed extrusion pad chip; the middle inner side wall is provided with threads.
The reset mechanism adopts disc spring assemblies and is at least provided with two sets of disc spring assemblies, and the two sets of disc spring assemblies are symmetrically arranged on the fixed extrusion pad inner sleeve; the disc spring assembly comprises a check ring, a guide rod, a disc spring group and a base plate; the guide rod is in a conical shape with a small front part and a big back part, and the guide rod, the disc spring group and the base plate are sequentially arranged from front to back; the check ring is sleeved on the guide rod, the periphery of the check ring is fixed on the inner side wall of the inner sleeve of the fixed extrusion pad, and the front end of the guide rod can extend into a gap between the chip of the fixed extrusion pad and the inner sleeve of the fixed extrusion pad.
The front end of the resetting mechanism extends out of the front end face of the inner sleeve of the fixed extrusion pad by 2 mm.
The fixed extrusion pad mandrel is an integrated structure consisting of a cylinder and a circular truncated cone; the circular truncated cone is arranged at the front end of the cylinder; the outer side wall of the cylinder is provided with a thread connected with the mandrel nut.
The inner sleeve of the fixed extrusion pad is a hollow cylindrical body, and the outer side wall of the inner sleeve is provided with a shoulder; through holes are symmetrically formed in the side wall of the inner sleeve of the fixed extrusion pad along the axial direction; the through hole is composed of two sections of coaxial holes with different inner diameters, and the inner diameter of the end hole close to the chip of the fixed extrusion pad is larger than that of the other section of hole; the through-hole of large aperture is used for holding fixed canceling release mechanical system, and the through-hole of little aperture is used for the exhaust.
The outer side wall of the inner sleeve of the fixed extrusion cushion is provided with threads.
Has the advantages that:
(1) the invention has simple structure, less integral abrasion in the use process and effectively prolonged service life.
(2) The extrusion device can realize that the extrusion pad is completely opened during extrusion, the diameter of the outer circle of the fixed extrusion pad outer sleeve is equal to that of the inner circle of the extrusion cylinder, and the cylinder wall of the extrusion cylinder is clean during extrusion; after extrusion is finished, the extrusion device rapidly restores to an initial state under the action of a reset mechanism, namely the disc spring assembly, the outer circle of the outer sleeve of the fixed extrusion pad is smaller than the diameter of the inner circle of the extrusion cylinder, aluminum is not scraped in the return process, and the outer sleeve of the fixed extrusion pad is free of abrasion.
(3) The invention improves the structure of the fixed extrusion pad mandrel, reduces stress concentration and prolongs the service life of the fixed extrusion pad mandrel. Meanwhile, the weight of the quick-wear part fixed extrusion pad outer sleeve and the fixed extrusion pad core shaft is greatly reduced, and the use cost of the fixed extrusion pad is reduced.
The foregoing is merely an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to be implemented in accordance with the content of the description, the following is a detailed description of preferred embodiments of the present invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the disc spring assembly of the present invention.
In the figure: 1-fixing the extrusion pad chip; 2-fixing the extrusion pad mandrel; 3-fixing the extrusion pad outer sleeve; 4-a reset mechanism; 5-mandrel nut; 6-mandrel anti-loosening element; 7-fixing the inner sleeve of the extrusion pad; 8-inner sleeve anti-loose piece; 9-a retainer ring; 10-a guide rod; 11-disc spring group; 12-backing plate.
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clear and clear, and to implement them in accordance with the content of the description, the following is a detailed description of preferred embodiments of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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.
The first embodiment is as follows:
referring to fig. 1 and 2, the elastic fixed extrusion pad for the aluminum extrusion machine comprises a fixed extrusion pad chip 1, a fixed extrusion pad mandrel 2, a fixed extrusion pad outer sleeve 3, a reset mechanism 4, a mandrel nut 5 and a fixed extrusion pad inner sleeve 7; the fixed extrusion pad chip 1 is sleeved at one end of a fixed extrusion pad core shaft 2, and one end of a fixed extrusion pad inner sleeve 7 is sleeved at the other end of the fixed extrusion pad core shaft 2 through a core shaft nut 5; a gap is reserved between the fixed extrusion pad chip 1 and the fixed extrusion pad inner sleeve 7; one end of the resetting mechanism 4 is arranged in the fixed extrusion pad inner sleeve 7, and the other end of the resetting mechanism 4 is contacted with the fixed extrusion pad chip 1; the fixed extrusion pad inner sleeve 7 is detachably connected in the fixed extrusion pad outer sleeve 3, and the outer side wall of the fixed extrusion pad chip 1 is contacted with the inner side wall of the fixed extrusion pad outer sleeve 3.
In a specific application, the fixed extrusion pad outer sleeve 3 and the fixed extrusion pad inner sleeve 7 are fixedly connected through threads. When the fixed extrusion pad chip 1 and the mandrel do not receive the nominal extrusion force (namely, the initial state), the distance of the contact surface between the fixed extrusion pad inner sleeve 7 and the fixed extrusion pad chip 1 is 2 mm.
In the extrusion production process, when fixed extrusion pad chip 1 and fixed extrusion pad dabber 2 received the extrusion force, fixed extrusion pad dabber 2 can oppress fixed extrusion pad chip 1, and then oppress fixed extrusion pad overcoat 3 and make it spring open along the circumferencial direction. When the fixed extrusion pad chip 1 and the mandrel are subjected to more than 30% of nominal extrusion force, the distance between the contact surface of the fixed extrusion pad chip 1 and the fixed extrusion pad inner sleeve 7 is zero, the resetting mechanism 4 is compressed, the compression amount is 2mm, the diameter of the outer circle of the fixed extrusion pad outer sleeve 3 is equal to that of the inner circle of the extrusion cylinder, and the cylinder wall of the extrusion cylinder is clean in the extrusion process; when extrusion force is zero after extrusion, the reset mechanism 4 pushes the fixed extrusion pad chip 1 back to the original position, so that the fixed extrusion pad is rapidly restored to the initial state, the outer circle of the fixed extrusion pad jacket 3 is smaller than the diameter of the inner circle of the extrusion cylinder, aluminum is not scraped in the return process, and the fixed extrusion pad jacket 3 is free of abrasion.
The invention has simple structure, less integral abrasion in the use process and effectively prolonged service life.
Example two:
referring to fig. 1, the elastic fixed extrusion pad for an aluminum extrusion press further comprises a mandrel anti-loose member 6 and an inner sleeve anti-loose member 8 on the basis of the first embodiment; the mandrel anti-loosening piece 6 is arranged between the fixed extrusion pad mandrel 2 and the mandrel nut 5; the inner sleeve anti-loose piece 8 is arranged between the fixed extrusion pad inner sleeve 7 and the fixed extrusion pad outer sleeve 3.
Further, the mandrel anti-loosening element 6 and the inner sleeve anti-loosening element 8 are both pins.
The outer fixed extrusion pad sleeve 3 and the inner fixed extrusion pad sleeve 7 in the embodiment are fixedly connected through threads and are loosened through the inner sleeve loosening-preventing member 8, namely the inner sleeve loosening-preventing pin, so that the outer fixed extrusion pad sleeve 3 and the inner fixed extrusion pad sleeve 7 are prevented from rotating internally during assembly and disassembly.
The fixed extrusion pad mandrel 2 is fixed in the middle through holes of the fixed extrusion pad outer sleeve 3 and the inner sleeve through a mandrel nut 5, and is loosened through a mandrel loosening-preventing piece 6, namely a mandrel loosening-preventing pin, so that the mandrel nut 5 is prevented from loosening.
In specific application, the fixed extrusion pad outer sleeve 3 and the fixed extrusion pad inner sleeve 7 can be fixed without threads and can be in clearance fit.
Example three:
referring to fig. 1, in a first embodiment or a second embodiment, an elastic fixed pressing pad for an aluminum pressing machine, a fixed pressing pad chip 1 is a circular truncated cone structure with a through hole in the center; the through hole is composed of a front part and a rear part, the rear part is a circular through hole, the front part is a conical through hole, and one end with a large outer diameter is positioned at the front end.
When actual extrusion production, because fixed extrusion pad overcoat 3 is conical surface contact with fixed extrusion pad chip 1, fixed extrusion pad chip 1 also is conical surface contact with fixed extrusion pad dabber 2, when fixed extrusion pad chip 1 and dabber received the extrusion force, fixed extrusion pad dabber 2 can oppress fixed extrusion pad chip 1, and then oppress fixed extrusion pad overcoat 3 and make it bounce open along the circumferencial direction. When the fixed extrusion pad chip 1 and the mandrel are subjected to more than 30% of nominal extrusion force, the distance between the contact surface of the fixed extrusion pad chip 1 and the fixed extrusion pad inner sleeve 7 is zero, the compression amount of the resetting mechanism 4 is 2mm, the diameter of the outer circle of the fixed extrusion pad outer sleeve 3 is equal to that of the inner circle of the extrusion cylinder, and the wall of the extrusion cylinder is clean in the extrusion process; when extrusion force is zero after extrusion, the reset mechanism 4 pushes the fixed extrusion pad chip 1 back to the original position, so that the fixed extrusion pad is rapidly restored to the initial state, the outer circle of the fixed extrusion pad jacket 3 is smaller than the diameter of the inner circle of the extrusion cylinder, aluminum is not scraped in the return process, and the fixed extrusion pad jacket 3 is free of abrasion.
Example four:
referring to the elastic fixed extrusion pad for the aluminum extrusion machine shown in fig. 1, on the basis of the first embodiment or the second embodiment, the outer sleeve 3 of the fixed extrusion pad is in a hollow cylindrical shape, and the hollow part consists of a front part, a middle part and a rear part which are different in shape; the middle part and the rear part are both circular, the inner diameter of the middle part is smaller than that of the rear part, the front part is in a horn shape matched with the shape of the outer side wall of the fixed extrusion pad chip 1, and the inner side wall of the middle part is provided with threads.
When in actual use, the fixed extrusion pad outer sleeve 3 adopts the technical scheme, can be well matched with the fixed extrusion pad chip 1 and the fixed extrusion pad inner sleeve 7, and the aluminum extrusion machine can smoothly realize opening by using the elastic fixed extrusion pad and rapidly reset in time, thereby ensuring that the fixed extrusion pad outer sleeve 3 has no abrasion.
The fixed extrusion pad jacket 3 adopts the technical scheme, so that the structure is simple, the weight is light, and the replacement cost is greatly saved.
Example five:
referring to fig. 1 and 2, an elastic fixed pressing pad for an aluminum pressing machine is disclosed, on the basis of the first embodiment: the reset mechanism 4 adopts disc spring assemblies and is at least provided with two sets of disc spring assemblies, and the two sets of disc spring assemblies are symmetrically arranged on the fixed extrusion pad inner sleeve 7; the disc spring assembly comprises a retainer ring 9, a guide rod 10, a disc spring group 11 and a backing plate 12; the guide rod 10 is a cone with a small front part and a big back part, and the guide rod 10, the disc spring group 11 and the cushion plate 12 are sequentially arranged from front to back; the check ring 9 is sleeved on the guide rod 10, the periphery of the check ring 9 is fixed on the inner side wall of the fixed extrusion pad inner sleeve 7, and the front end of the guide rod 10 can extend into a gap between the fixed extrusion pad chip 1 and the fixed extrusion pad inner sleeve 7.
In practical use, the guide rod 10 of the disc spring assembly is fixed in a large-aperture through hole axially formed in the side wall of the inner sleeve 7 of the fixed pressing pad by means of the retainer ring 9. When the fixed extrusion pad chip 1 and the fixed extrusion pad mandrel 2 are subjected to more than 30% of nominal extrusion force, the guide rod 10 extrudes the disc spring group 11 to retract, the contact surface distance between the fixed extrusion pad chip 1 and the fixed extrusion pad inner sleeve 7 is zero, the compression amount of the disc spring group 11 of the reset mechanism 4 is 2mm, the diameter of the outer circle of the fixed extrusion pad outer sleeve 3 is equal to that of the inner circle of the extrusion cylinder, and the wall of the extrusion cylinder is clean in the extrusion process; when the extrusion force is zero after extrusion, the disc spring group 11 resets, and the guide rod 10 pushes the fixed extrusion pad chip 1 back to the original position, so that the fixed extrusion pad is rapidly restored to the initial state, the outer circle of the outer sleeve 3 of the fixed extrusion pad is smaller than the diameter of the inner circle of the extrusion cylinder, aluminum is not scraped in the return process, and the outer sleeve 3 of the fixed extrusion pad is free of abrasion.
Example six:
referring to fig. 1 and 2, an elastic fixed pressing pad for an aluminum pressing machine is disclosed, based on the first embodiment or the fifth embodiment: the front end of the reset mechanism 4 extends out of the front end surface of the fixed extrusion pad inner sleeve 7 by 2 mm.
When in actual use, the resetting mechanism 4 adopts the technical scheme, so that after the integral assembly, the resetting mechanism 4 just contacts with the fixed extrusion pad chip 1.
Example seven:
referring to fig. 1, an elastic fixed extrusion pad for an aluminum extrusion press is disclosed, based on the first embodiment: the fixed extrusion pad mandrel 2 is an integrated structure consisting of a cylinder and a circular truncated cone; the circular truncated cone is arranged at the front end of the cylinder; the outer side wall of the cylinder is provided with a thread connected with the mandrel nut 5.
During the in-service use, fixed extrusion pad dabber 2 one end is the helicitic texture with 5 fixed connection of dabber nut, and the other end is the conical surface structure that contacts with fixed extrusion pad chip 1, because the conical surface restriction of fixed extrusion pad overcoat 3, fixed extrusion pad dabber 2 and fixed extrusion pad chip 1 are restricted in the middle part through-hole of fixed extrusion pad overcoat 3 and fixed extrusion pad endotheca 7. The fixed extrusion pad mandrel 2 is simple in structure and light in weight, stress concentration is effectively reduced, the service life of the fixed extrusion pad mandrel 2 is greatly prolonged, and replacement cost is reduced.
Example eight:
referring to fig. 1, an elastic fixed extrusion pad for an aluminum extrusion press is disclosed, based on the first embodiment: the inner sleeve 7 of the fixed extrusion pad is a hollow cylindrical body, and the outer side wall of the inner sleeve is provided with a shoulder; through holes are symmetrically formed in the side wall of the inner sleeve 7 of the fixed extrusion pad along the axial direction; the through hole is composed of two sections of coaxial holes with different inner diameters, and the inner diameter of the end hole close to the fixed extrusion pad chip 1 is larger than that of the other section of hole; the large-aperture through hole is used for accommodating the fixed reset mechanism 4, and the small-aperture through hole is used for exhausting.
Furthermore, the outer side wall of the inner sleeve 7 of the fixed extrusion pad is provided with threads.
In actual use, when the fixed extrusion pad chip 1 and the fixed extrusion pad mandrel 2 are subjected to more than 30% of nominal extrusion force, the guide rod 10 extrudes the disc spring group 11 to retract, air compression is generated, and the compressed air is discharged through the through hole with small aperture; when the extrusion force is zero after extrusion, the disc spring group 11 resets, the guide rod 10 pushes the fixed extrusion pad chip 1 back to the original position, and air is supplemented through the through hole with small aperture.
The outer side wall threads of the inner sleeve 7 of the fixed extrusion pad are arranged, so that the inner sleeve 7 of the fixed extrusion pad can be conveniently connected with the outer sleeve 3 of the fixed extrusion pad.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an aluminium is elastic fixation extrusion pad for extruder which characterized in that: the device comprises a fixed extrusion pad chip (1), a fixed extrusion pad mandrel (2), a fixed extrusion pad outer sleeve (3), a reset mechanism (4), a mandrel nut (5) and a fixed extrusion pad inner sleeve (7); the fixed extrusion pad chip (1) is sleeved at one end of a fixed extrusion pad mandrel (2), and one end of a fixed extrusion pad inner sleeve (7) is sleeved at the other end of the fixed extrusion pad mandrel (2) through a mandrel nut (5); a gap is reserved between the fixed extrusion pad chip (1) and the fixed extrusion pad inner sleeve (7); one end of the resetting mechanism (4) is arranged in the fixed extrusion pad inner sleeve (7), and the other end of the resetting mechanism (4) is contacted with the fixed extrusion pad chip (1); the fixed extrusion pad inner sleeve (7) is detachably connected in the fixed extrusion pad outer sleeve (3), and the outer side wall of the fixed extrusion pad chip (1) is contacted with the inner side wall of the fixed extrusion pad outer sleeve (3).
2. The elastic fixed extrusion pad for an aluminum extrusion press as set forth in claim 1, wherein: the anti-loosening device also comprises a mandrel anti-loosening element (6) and an inner sleeve anti-loosening element (8); the mandrel anti-loosening piece (6) is arranged between the fixed extrusion pad mandrel (2) and the mandrel nut (5); the inner sleeve anti-loosening element (8) is arranged between the fixed extrusion pad inner sleeve (7) and the fixed extrusion pad outer sleeve (3).
3. An elastic fixed pressing pad for an aluminum pressing machine as set forth in claim 1 or 2, characterized in that: the mandrel anti-loosening element (6) and the inner sleeve anti-loosening element (8) are both pins.
4. An elastic fixed pressing pad for an aluminum pressing machine as set forth in claim 1 or 2, characterized in that: the fixed extrusion pad chip (1) is of a circular truncated cone structure with a through hole in the center; the through hole is composed of a front part and a rear part, the rear part is a circular through hole, the front part is a conical through hole, and one end with a large outer diameter is positioned at the front end.
5. An elastic fixed pressing pad for an aluminum pressing machine as set forth in claim 1 or 2, characterized in that: the fixed extrusion cushion jacket (3) is in a hollow cylindrical shape, and the hollow part consists of a front part, a middle part and a rear part which are different in shape; the middle part and the rear part are both circular, the inner diameter of the middle part is smaller than that of the rear part, and the front part is in a horn shape matched with the shape of the outer side wall of the fixed extrusion pad chip (1); the middle inner side wall is provided with threads.
6. The elastic fixed extrusion pad for an aluminum extrusion press as set forth in claim 1, wherein: the reset mechanism (4) adopts at least two sets of disc spring assemblies, and the two sets of disc spring assemblies are symmetrically arranged on the inner sleeve (7) of the fixed extrusion pad; the disc spring assembly comprises a retainer ring (9), a guide rod (10), a disc spring group (11) and a backing plate (12); the guide rod (10) is in a conical shape with a small front part and a large rear part, and the guide rod (10), the disc spring group (11) and the cushion plate (12) are sequentially arranged from front to back; the check ring (9) is sleeved on the guide rod (10), the periphery of the check ring (9) is fixed on the inner side wall of the fixed extrusion pad inner sleeve (7), and the front end of the guide rod (10) can extend into a gap between the fixed extrusion pad chip (1) and the fixed extrusion pad inner sleeve (7).
7. An elastic fixed pressing pad for an aluminum pressing machine as set forth in claim 1 or 6, characterized in that: the front end of the reset mechanism (4) extends out of the front end surface of the fixed extrusion pad inner sleeve (7) by 2 mm.
8. The elastic fixed extrusion pad for an aluminum extrusion press as set forth in claim 1, wherein: the fixed extrusion pad mandrel (2) is an integrated structure consisting of a cylinder and a circular truncated cone; the circular truncated cone is arranged at the front end of the cylinder; the outer side wall of the cylinder is provided with a thread connected with the mandrel nut (5).
9. The elastic fixed extrusion pad for an aluminum extrusion press as set forth in claim 1, wherein: the inner sleeve (7) of the fixed extrusion pad is a hollow cylindrical body, and the outer side wall of the inner sleeve is provided with a shoulder; through holes are symmetrically formed in the side wall of the inner sleeve (7) of the fixed extrusion pad along the axial direction; the through hole is composed of two sections of coaxial holes with different inner diameters, and the inner diameter of the end hole close to the fixed extrusion pad chip (1) is larger than that of the other section of hole; the through hole with large aperture is used for accommodating the fixed reset mechanism (4), and the through hole with small aperture is used for exhausting.
10. The elastic fixed extrusion pad for an aluminum extrusion press as set forth in claim 1, wherein: the outer side wall of the fixed extrusion pad inner sleeve (7) is provided with threads.
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GB2067944A (en) * | 1980-01-26 | 1981-08-05 | Centry Aluminium Co Ltd | Extrusion process |
JPH0788539A (en) * | 1993-09-24 | 1995-04-04 | Ube Ind Ltd | Fixed-dummy block end face lubricating device of extrusion press |
CN1597164A (en) * | 2004-09-17 | 2005-03-23 | 太原重型机械集团有限公司 | Expanding ring type fixed extrusion pad for aluminium extrusion machine |
CN2757955Y (en) * | 2004-09-17 | 2006-02-15 | 太原重型机械集团有限公司 | Expanding ring type fixed extrusion pad for aluminium extruder |
CN202185473U (en) * | 2011-08-16 | 2012-04-11 | 磐石市飞跃模具有限公司 | Aluminium material extruder dummy block with aluminium slot on taper sleeve |
CN103128124A (en) * | 2013-01-24 | 2013-06-05 | 中国重型机械研究院股份公司 | Design method of aluminum extruder purpose elastic fixed extrusion pad |
CN203108967U (en) * | 2013-01-24 | 2013-08-07 | 中国重型机械研究院股份公司 | Elastic fixing and extruding pad for aluminum extruder |
CN106536077A (en) * | 2014-05-22 | 2017-03-22 | 埃克斯科科技有限公司 | Dummy block for extrusion press |
CN203955752U (en) * | 2014-06-09 | 2014-11-26 | 石家庄百山机械设备有限公司 | A kind of pressure ram fixed mechanism |
CN204035222U (en) * | 2014-07-10 | 2014-12-24 | 无锡市威特机械有限公司 | A kind of ectrusion press pressure ram hold down gag |
CN104841717A (en) * | 2014-07-10 | 2015-08-19 | 无锡市威特机械有限公司 | Extrusion rod compressing apparatus for extruder |
CN204523821U (en) * | 2014-08-28 | 2015-08-05 | 无锡市威特机械有限公司 | A kind of expansion cushion fixed extrusion pillow of the extrusion machine |
CN206153312U (en) * | 2016-10-17 | 2017-05-10 | 磐石市飞跃模具有限公司 | Packing bayonet type extrusion cushion |
CN107262545A (en) * | 2017-08-08 | 2017-10-20 | 江苏亚太轻合金科技股份有限公司 | Double floating elastic fixation extrusion pads |
CN207013474U (en) * | 2017-08-08 | 2018-02-16 | 江苏亚太轻合金科技股份有限公司 | Double floating elastic fixation extrusion pads |
CN109226307A (en) * | 2018-10-22 | 2019-01-18 | 攀钢集团江油长城特殊钢有限公司 | Hot-extrusion mold component and its application method |
CN210876810U (en) * | 2019-11-13 | 2020-06-30 | 延边科源新能源科技有限公司 | Compact and practical expansion and contraction fixed extrusion pad |
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