CN105921665B - The bearing forging processing noise reduction chopping block component of forging hammer - Google Patents
The bearing forging processing noise reduction chopping block component of forging hammer Download PDFInfo
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- CN105921665B CN105921665B CN201610368868.6A CN201610368868A CN105921665B CN 105921665 B CN105921665 B CN 105921665B CN 201610368868 A CN201610368868 A CN 201610368868A CN 105921665 B CN105921665 B CN 105921665B
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- chopping block
- transparent cover
- forging
- sliding seat
- split type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/06—Hammers tups; Anvils; Anvil blocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The present invention provides a kind of noise reduction chopping block components of bearing forging processing forging hammer, it is solved, and the vibration of prior art chopping block is big, can not carry out the technical problems such as garbage collection.This bearing forging processing noise reduction chopping block component of forging hammer, pedestal is equipped with chopping block body and transparent cover, transparent cover upper end, which offers, forges window, operation window is equipped on the outside of transparent cover, transparent cover is in split type structure, transparent cover is spliced by multiple arcs block, detachable structure is equipped between arc block, chopping block body includes split type chopping block base, split type chopping block base upper end is equipped with tapered channel, it is movably equipped with taper anvil in tapered channel, elastic damping resetting structure is equipped between taper anvil and split type chopping block base.A variety of shock-damping structures that the present invention has the separation by cutting boards structure and is arranged in chopping block, damping effect are more preferable；The advantages that effect for collecting waste material is preferable, and the noise that can be generated to forging is isolated.
Description
Technical field
The invention belongs to the noise reducing types that forging process equipment technical field more particularly to a kind of processing of bearing forging use forging hammer
Chopping block component.
Background technique
Forging equipment refers in forging processing for shaping and isolated mechanical equipment.Forging equipment includes forming
Forging hammer, mechanical press, hydraulic press, fly press and horizontal forging and upsetting machine and forging manipulator, uncoiler, straightening machine, cutter
Etc. ancillary equipments.Wherein, forging hammer be make to fall part using air pressure or hydraulic equal transmission mechanisms, including piston, hammer stem, tup,
The generations such as upper anvil campaign simultaneously accumulates kinetic energy, is applied to forging in the extremely short time, is allowed to obtain plastic deformation ability, completes various forgings
Press the metal forming machinery of technique.It is domestic to reduce the oscillatory acceleration with its amplitude of vibration of setback since forging hammer is larger kind of equipment of vibration
Outer existing forging hammer mostly uses greatly mass foundation, is all poured with concrete, and this basis is heavy, and the dosage of material is more,
Forging hammer is using very big anvil block or movable lower ram as the bearing surface of strike, in impulse stroke, the blow speed wink of tup
Between be down to zero, work is impact, generates very big hitting power, not only seriously affects around precision instrument, equipment and normally transport
Row reduces the stability and its service life of factory building structure, and is a kind of industrial nuisance being detrimental to health.
Of the existing technology in order to solve the problems, such as, people have carried out long-term exploration, propose miscellaneous solution
Scheme.For example, Chinese patent literature disclose a kind of forging hammer [application number: 201420340905.9], including rack, hydraulic cylinder,
Tup, upper anvil block, lower anvil block and pedestal, pedestal are equipped with the lower anvil block and rack, and the two sides of lower anvil block are respectively provided with a liquid
Cylinder pressure, hydraulic cylinder are equipped with rubber pad, and for reducing vibration when tup falls, damping bullet is equipped between hydraulic cylinder and pedestal
Spring, for reducing the vibration between hydraulic cylinder and pedestal, rack is equipped with guide rail, and the both ends of tup are connected in guide rail,
The lower part of tup is connected with anvil block, and the piston rod of hydraulic cylinder is connected with tup, soundproof plate is additionally provided in the surrounding of pedestal, for subtracting
Noise when few forging hammer work.
Although it is excessive that above scheme solves the problems, such as that prior art forging hammer shakes to a certain extent, the program according to
So there is: due to forging hammer forge workpiece when have great impact force, which directly passes through spring and rubber pad is subtracted
Shake, structure is too simple, and damping effect is bad, is unable to satisfy shock attenuation needs when forging hammer；Garbage collection can not be carried out, can not be dropped
Low noise.
Summary of the invention
Regarding the issue above, the present invention provides a kind of design is rationally, structure is simple, the better axis of damping effect
Hold the noise reduction chopping block component of forging process forging hammer.
In order to achieve the above objectives, present invention employs following technical proposals: this bearing forging processing noise reducing type of forging hammer
Chopping block component, including the chopping block body being set on the base, the pedestal is equipped with the chopping block body being located at immediately below forging hammer body, institute
The pedestal stated, which is equipped with, can cover at transparent cover on entire chopping block body, the upper end diameter of the transparent cover to lower end
Diameter becomes larger, and the transparent cover upper end, which is offered, forges window for what forging hammer body passed through, outside in transparent cover week
Side is equipped at least side operation window corresponding with chopping block side portion, and the transparent cover is in split type structure, and institute
The transparent cover stated arc block made of multiple heat-resisting materials is spliced, and being equipped with energy between the arc block will be each
The detachable structure that a arc block is mutually located, the chopping block body includes the split type chopping block base of rectangular-blocklike, described
Split type chopping block base upper end center is equipped with the tapered channel with inner conical surface, and is movably equipped in the tapered channel all outside
Side has the taper anvil of the male cone (strobilus masculinus) to match with inner conical surface, is equipped with and works as between the taper anvil and split type chopping block base
Buffering can be played when taper anvil is by down force to taper anvil and when the down force that taper anvil is subject to disappears
When taper anvil can be made slowly to reset elastic damping resetting structure.The setting of transparent cover not only contributes to the collection of waste material,
And the noise that can be generated to forging is isolated.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the elastic damping resetting structure packet
It includes and is connected with taper anvil and taper anvil can be made to keep up the elastic support structure of movement tendency, on split type chopping block base
Equipped with the position limiting structure that taper anvil can be prevented to be detached from tapered channel, the inner conical surface and male cone (strobilus masculinus) contact with each other and in inner cone
Face and male cone (strobilus masculinus) are equipped with damping structure, the split type chopping block base by the identical sliding seat of two outer dimensions in the horizontal direction
It is mutually butted, is equipped between the sliding seat when sliding seat mutually divides in the case where taper anvil is by down force effect
From when can enable to generate mutual tractive force between sliding seat and keep sliding seat mutual when taper anvil is not affected by down force
Docking is so that the elastic reset structure that inner conical surface and male cone (strobilus masculinus) contact with each other always.Elastic support structure makes taper anvil exist
It is resetted after forging hammer strike workpiece, position limiting structure prevents taper anvil from excessively resetting after forging hammer hits workpiece, and damping structure is reduced
The speed of taper anvil lifting, elastic reset structure reset sliding seat after forging hammer hits workpiece and push taper anvil to
Upper movement, stability is high, good damping effect.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the elastic support structure includes setting
It sets in tapered channel lower end and the installation passage that is connected with tapered channel, installation passage taper straight and described
The diameter of channel lower end and the diameter of installation passage are equal, and support spring, and the support are equipped in the installation passage
For spring one end against being arranged on taper anvil, the other end acts on installation passage bottom.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the position limiting structure includes several sets
It sets on sliding seat and towards the limited block that tapered channel upper end extends, and the taper anvil upper end offsets with limited block
It leans on.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the elastic reset structure includes energy
Sliding seat is set to remain the elastic reset component of movement tendency close to each other and be arranged between sliding seat and pedestal and energy
The guidance set for sliding sliding seat along same straight line.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, if the elastic reset component includes
The dry ring elastic parts for being sheathed on split type chopping block base outer circumferential, and the ring elastic parts are set gradually from the top down；
Successively equidistantly distributed is arranged the ring elastic parts, and several annular solids is equipped on the outside of the sliding seat, and described
Ring elastic parts are arranged in annular solid respectively；The guidance set includes several along pedestal axial direction distribution setting and cross section
The directive slide track of narrow structure under width is presented, the sliding seat bottom side is slided with directive slide track correspondingly respectively equipped with several
Slot, and the directive slide track is connected with sliding slot sliding.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the damping structure is including being arranged
Damping layer on the conical surface and/or male cone (strobilus masculinus).
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the detachable structure includes at least
One is sheathed on the ring positioning ring of transparent cover week to the periphery and in a ring, and the ring positioning ring, which is located at, forges window
Between mouth and operation window, the quantity of the operation window is two and respectively corresponds the two sides that transparent cover is arranged in, institute
The ring positioning ring stated is circumferentially with several location holes, and the arc block is matched equipped with several with location hole correspondingly
Hole is closed, and the location hole is connected by positioning bolt with matching hole.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the quantity of the arc block is two
And mutually split forms above-mentioned transparent cover, and the arc block is made of pyroceram.
In the noise reduction chopping block component of above-mentioned bearing forging processing forging hammer, the transparent cover lower end bottom side week
To equipped with the antislip ring to lean with pedestal.
Compared with prior art, the advantages of noise reduction chopping block component of this bearing forging processing forging hammer, is: passing through
The separation of cutting boards structure and a variety of shock-damping structures being arranged in chopping block, stability is high, and damping effect is more preferable；Collect waste material
Effect is preferable, and the noise that can be generated to forging is isolated.
Detailed description of the invention
Fig. 1 is structural schematic diagram provided by the invention.
Fig. 2 is in Fig. 1 along the cross-sectional view of the direction A section view.
It is forging hammer body 12, pedestal 15, chopping block body 16, split type chopping block base 17, taper anvil 18, sliding seat 19, transparent in figure
Cover 4 forges window 41, operation window 42, arc block 43, detachable structure 5, ring positioning ring 51, location hole 52, antislip ring
6, elastic support structure 7, installation passage 71, support spring 72, position limiting structure 73, limited block 74, damping structure 75, damping layer
76, elastic reset structure 8, elastic reset component 81, ring elastic parts 82, guidance set 83, directive slide track 84, elastic damping are multiple
Bit architecture 85.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1 to Figure 2, the noise reduction chopping block component of forging hammer is used in this bearing forging processing, including is arranged in pedestal 15
On chopping block body 16, pedestal 15 is equipped with the chopping block body 16 being located at immediately below forging hammer body 12, pedestal 15 be equipped with can cover at it is whole
The diameter of transparent cover 4 on a chopping block body 16, upper end diameter to the lower end of transparent cover 4 becomes larger, 4 upper end of transparent cover
It offers and forges window 41 for what forging hammer body 12 passed through, be equipped at least side and 16 side of chopping block body in 4 outer circumferential of transparent cover
The corresponding operation window 42 in portion, and transparent cover 4 is in split type structure, and transparent cover 4 is made of multiple heat-resisting materials
Arc block 43 be spliced, and the detachable structure 5 that each arc block 43 can be mutually located, anvil are equipped between arc block 43
Plate body 16 includes the split type chopping block base 17 of rectangular-blocklike, and 17 upper end center of split type chopping block base is equipped with the cone with inner conical surface
Shape channel, and the taper anvil 18 that outer circumferential has the male cone (strobilus masculinus) to match with inner conical surface is movably equipped in tapered channel, cone
Taper anvil 18 can be played when taper anvil 18 is by down force by being equipped between shape anvil 18 and split type chopping block base 17
It is multiple to the elastic damping for buffering and taper anvil 18 capable of being made slowly to reset when the down force that taper anvil 18 is subject to disappears
Bit architecture 85.The setting of transparent cover 4 not only contributes to the collection of waste material, and the noise that can be generated to forging is isolated.
Specifically, elastic damping resetting structure 85 includes being connected with taper anvil 18 and taper anvil 18 capable of being made to keep up
The elastic support structure 7 of movement tendency, being equipped on split type chopping block base 17 can prevent taper anvil 18 to be detached from tapered channel
Position limiting structure 73, inner conical surface and male cone (strobilus masculinus) contact with each other and are equipped with damping structure 75, split type chopping block in inner conical surface and male cone (strobilus masculinus)
Seat 17 is mutually butted in the horizontal direction by the identical sliding seat 19 of two outer dimensions, is equipped between sliding seat 19 when sliding
Seat 19 can make to generate mutual tractive force between sliding seat 19 when being separated from each other under taper anvil 18 is by down force effect
And sliding seat 19 can be made to be mutually butted so that inner conical surface and male cone (strobilus masculinus) begin when taper anvil 18 is not affected by down force
The elastic reset structure 8 to contact with each other eventually.Elastic support structure 7 resets taper anvil 18 after forging hammer hits workpiece, limits
Structure 73 prevents taper anvil 18 from excessively resetting after forging hammer hits workpiece, and damping structure 75 reduces the lifting of taper anvil 18
Speed, elastic reset structure 8 reset sliding seat 19 after forging hammer hits workpiece and taper anvil 18 are pushed to move upwards, stablize
Property high, good damping effect.Elastic support structure 7 includes the installation passage that tapered channel lower end is arranged in and is connected with tapered channel
71, installation passage 71 is straight and the diameter of tapered channel lower end is equal with the diameter of installation passage 71, in installation passage 71
Equipped with support spring 72, and 72 one end of support spring, against being arranged on taper anvil 18, the other end acts on installation passage 71
Bottom, position limiting structure 73 is arranged in including several on sliding seat 19 and towards the limited block 74 of tapered channel upper end extension, and bores
18 upper end of shape anvil leans with limited block 74, and elastic reset structure 8 includes that sliding seat 19 can be made to remain fortune close to each other
The elastic reset component 81 of dynamic trend and setting between sliding seat 19 and pedestal 15 and can make sliding seat 19 along with always
The guidance set 83 slided on line, elastic reset component 81 include several annulars for being sheathed on 17 outer circumferential of split type chopping block base
Elastic component 82, and ring elastic parts 82 are set gradually from the top down；Successively equidistantly distributed is arranged ring elastic parts 82, and slides
19 outside of seat is equipped with several annular solids, and ring elastic parts 82 are arranged in annular solid respectively；Guidance set 83 includes several edges
The directive slide track 84 of wide lower narrow structure is presented in the axial distribution setting of pedestal 15 and cross section, and 19 bottom side of sliding seat is equipped with several difference
With the one-to-one sliding slot of directive slide track 84, and the sliding of directive slide track 84 and sliding slot is connected, and damping structure 75 is setting in inner cone
Damping layer 76 on face and/or male cone (strobilus masculinus).
Further, detachable structure 5 includes at least one annular for being sheathed on transparent cover 4 weeks to the periphery and in a ring
Locating ring 51, ring positioning ring 51, which is located at, to be forged between window 41 and operation window 42, and the quantity of operation window 42 is two
A and respectively correspond the two sides that transparent cover 4 is arranged in, ring positioning ring 51 is circumferentially with several location holes 52, and arc block 43
It is equipped with several and one-to-one matching hole of location hole 52, and location hole 52 is connected by positioning bolt with matching hole, arc
The quantity of block 43 is two and mutually split forms above-mentioned transparent cover 4, and arc block 43 is made of pyroceram, transparent
4 lower end bottom side of cover is circumferentially with the antislip ring 6 to lean with pedestal 15.
The working principle of the noise reduction chopping block component of this bearing forging processing forging hammer are as follows: after forging hammer hits workpiece, cone
Shape anvil 18 slows down under the action of damping structure 75, and separates split type chopping block base 17, then multiple in elastic damping
Split type chopping block base 17 resets and taper anvil 18 is pushed to move upwards under the action of bit architecture 85.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although forging hammer body 12, pedestal 15, chopping block body 16, split type chopping block base 17, taper anvil is used more herein
18, sliding seat 19, transparent cover 4, forge window 41, operation window 42, arc block 43, detachable structure 5, ring positioning ring
51, location hole 52, antislip ring 6, elastic support structure 7, installation passage 71, support spring 72, position limiting structure 73, limited block 74,
Damping structure 75, damping layer 76, elastic reset structure 8, elastic reset component 81, ring elastic parts 82, guidance set 83, guiding
The terms such as sliding rail 84, elastic damping resetting structure 85, but it does not exclude the possibility of using other terms.Only using these terms
Merely to being more convenient to describe and explain essence of the invention；Being construed as any additional limitation all is and this
What spirit was disagreed.
Claims (5)
1. a kind of bearing forging processing noise reduction chopping block component of forging hammer, including the chopping block body being arranged on pedestal (15)
(16), which is characterized in that the pedestal (15) is equipped with the chopping block body (16) being located at immediately below forging hammer body (12), the bottom
Seat (15) is equipped with the transparent cover (4) that can be covered on entire chopping block body (16), the upper end diameter of the transparent cover (4)
Diameter to lower end becomes larger, and the transparent cover (4) upper end, which is offered, forges window for what forging hammer body (12) passed through
(41), it is equipped at least side operation window (42) corresponding with chopping block body (16) side in transparent cover (4) outer circumferential, and
The transparent cover (4) is in split type structure, and described transparent cover (4) arc block made of multiple heat-resisting materials
(43) it is spliced, and is equipped with the detachable structure that each arc block (43) can be mutually located between the arc block (43)
(5), the chopping block body (16) includes the split type chopping block base (17) of rectangular-blocklike, on the split type chopping block base (17)
End center is equipped with the tapered channel with inner conical surface, and is movably equipped with outer circumferential in the tapered channel and has and inner conical surface
The taper anvil (18) of the male cone (strobilus masculinus) to match is equipped between the taper anvil (18) and split type chopping block base (17) when cone
Taper anvil (18) can be played when shape anvil (18) is by down force buffering and when taper anvil (18) be subject to it is downward
The elastic damping resetting structure (85) that active force can be such that taper anvil (18) slowly resets when disappearing；The elastic damping resets
Structure (85) includes being connected with taper anvil (18) and taper anvil (18) capable of being made to keep up the resilient support knot of movement tendency
Structure (7) is equipped with the position limiting structure (73) that taper anvil (18) can be prevented to be detached from tapered channel, institute on split type chopping block base (17)
The inner conical surface and male cone (strobilus masculinus) stated contact with each other and are equipped with damping structure (75) in inner conical surface and male cone (strobilus masculinus), the split type chopping block
Seat (17) be mutually butted in the horizontal direction by the identical sliding seat (19) of two outer dimensions, the sliding seat (19) it
Between be equipped with when sliding seat (19) taper anvil (18) by down force act under be separated from each other when can make sliding seat (19)
Between generate mutual tractive force and can make when taper anvil (18) is not affected by down force sliding seat (19) be mutually butted from
And the elastic reset structure (8) that inner conical surface and male cone (strobilus masculinus) are contacted with each other always；The position limiting structure (73) includes several
It is arranged on sliding seat (19) and towards the limited block (74) that tapered channel upper end extends, and described taper anvil (18) upper end
It leans with limited block (74)；The elastic reset structure (8) includes that sliding seat (19) can be made to remain fortune close to each other
The elastic reset component (81) of dynamic trend and setting between sliding seat (19) and pedestal (15) and can make sliding seat (19) equal
The guidance set (83) slided along same straight line；The elastic reset component (81) includes several being sheathed on split type chopping block
The ring elastic parts (82) of seat (17) outer circumferential, and the ring elastic parts (82) are set gradually from the top down；Described
Successively equidistantly distributed is arranged ring elastic parts (82), and several annular solids is equipped on the outside of the sliding seat (19), and described
Ring elastic parts (82) be arranged in annular solid respectively；The guidance set (83) includes several along pedestal (15) axial direction point
The directive slide track (84) of narrow structure under width is presented in cloth setting and cross section, the sliding seat (19) bottom side be equipped with it is several respectively with
Directive slide track (84) one-to-one sliding slot, and the directive slide track (84) is connected with sliding slot sliding；The detachable knot
Structure (5) includes that at least one is sheathed on the ring positioning ring (51) of transparent cover (4) week to the periphery and in a ring, the annular
Locating ring (51), which is located at, to be forged between window (41) and operation window (42), and the quantity of the operation window (42) is two
It is a and respectively correspond be arranged in the two sides of transparent cover (4), the ring positioning ring (51) is circumferentially with several location holes
(52), and the arc block (43) is equipped with several and location hole (52) one-to-one matching hole, and the location hole
(52) it is connected by positioning bolt with matching hole.
2. the noise reduction chopping block component that forging hammer is used in bearing forging processing according to claim 1, which is characterized in that described
Elastic support structure (7) includes the installation passage (71) that tapered channel lower end is arranged in and is connected with tapered channel, the peace
Fill the diameter of channel (71) the tapered channel lower end straight and described peace equal, described with the diameter of installation passage (71)
Fill channel (71) in be equipped with support spring (72), and described support spring (72) one end against be arranged in taper anvil (18)
On, the other end acts on installation passage (71) bottom.
3. the noise reduction chopping block component that forging hammer is used in bearing forging processing according to claim 1 or 2, which is characterized in that institute
The damping structure (75) stated is the damping layer (76) being arranged on inner conical surface and/or male cone (strobilus masculinus).
4. the noise reduction chopping block component that forging hammer is used in bearing forging processing according to claim 3, which is characterized in that described
The quantity of arc block (43) is two and mutually split is formed above-mentioned transparent cover (4), and the arc block (43) is by resistance to
High temp glass is made.
5. the noise reduction chopping block component that forging hammer is used in bearing forging processing according to claim 4, which is characterized in that described
Transparent cover (4) lower end bottom side is circumferentially with the antislip ring (6) to lean with pedestal (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368868.6A CN105921665B (en) | 2016-05-29 | 2016-05-29 | The bearing forging processing noise reduction chopping block component of forging hammer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368868.6A CN105921665B (en) | 2016-05-29 | 2016-05-29 | The bearing forging processing noise reduction chopping block component of forging hammer |
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| CN105921665B true CN105921665B (en) | 2019-01-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773044B (en) * | 2018-11-20 | 2024-03-29 | 韶关市中机重工有限责任公司 | Semicircular plate pressing die and semicircular plate manufacturing method |
| CN112808913B (en) * | 2020-12-31 | 2022-09-02 | 嘉善贯德精密锻造有限公司 | Clutch gear inner ring forging device |
| CN113617996B (en) * | 2021-03-02 | 2023-06-20 | 天津重型装备工程研究有限公司 | In-vitro forging method of ring forging |
| CN113618001B (en) * | 2021-03-02 | 2023-04-07 | 天津重型装备工程研究有限公司 | External forging elastic box and external forging auxiliary tool |
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| US3356331A (en) * | 1964-11-04 | 1967-12-05 | Francois M Springuel | Shock absorber |
| CN202507579U (en) * | 2012-04-12 | 2012-10-31 | 沈吕远 | Modularization sound insulation cover used for insulating sound and damping of small and medium-sized punch press |
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|---|---|
| CN105921665A (en) | 2016-09-07 |
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Address after: 313212, Huzhou, Zhejiang province Xin'an town Deqing County Pax Village Patentee after: Deqing Hengfeng Machinery Co., Ltd Address before: 313212, Huzhou, Zhejiang province Xin'an town Deqing County Pax Village Patentee before: DEQING HENGFENG MACHINERY CO., LTD. |
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Denomination of invention: Noise reduction chopper assembly of forging hammer for bearing forging Effective date of registration: 20201023 Granted publication date: 20190104 Pledgee: Zhejiang Deqing Rural Commercial Bank Co.,Ltd. Xin'an sub branch Pledgor: Deqing Hengfeng Machinery Co.,Ltd. Registration number: Y2020980007087 |
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