CN104874659B - Circumferential groove punching machine used for LED (Light Emitting Diode) radiator - Google Patents
Circumferential groove punching machine used for LED (Light Emitting Diode) radiator Download PDFInfo
- Publication number
- CN104874659B CN104874659B CN201510293909.5A CN201510293909A CN104874659B CN 104874659 B CN104874659 B CN 104874659B CN 201510293909 A CN201510293909 A CN 201510293909A CN 104874659 B CN104874659 B CN 104874659B
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- rotating disk
- chassis
- guide plate
- punching
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to a circumferential groove punching machine used for an LED (Light Emitting Diode) radiator. The circumferential groove punching machine comprises a power mechanism, a rotary table, a guide plate, a chassis and punching piece, wherein the power mechanism and the rotary table are in driving connection, the guide plate and the chassis are in fixed connection, and the rotary table and the punching pieces which are circular are positioned between the chassis and the guide plate; a circular placing hole, a through hole and an accommodating hole are formed in the chassis, the rotary table and the guide plate respectively; a circular ring-shaped boss and a limiting part are arranged on the chassis around the accommodating hole, and the rotary table is arranged between the boss and the limiting part in a rotating manner; a plurality of guide holes in clockwise radial arrangement are formed in the rotary table; a plurality of sliding grooves in radial arrangement are formed in the guide plate; each punching piece comprises a punching strip and a sliding block connected with the corresponding punching strip in the rotating manner, and the sliding blocks and the punching strips are arranged in the guide holes and the sliding grooves respectively in a sliding manner. The rotary table is driven to rotate stably through the power mechanism, so that the punching strips slide along the sliding grooves, simultaneous punching for specially-shaped steel inserted in the accommodating holes in multiple directions is realized, the stress is balanced, the symmetry degree and position degree of the grooves through punch forming are improved, and the punching quality is preferably controlled.
Description
Technical field
The present invention relates to stamping technology field, more particularly to a kind of circumferential recess stamping machine for LED radiator.
Background technology
Deformed steel is the abbreviation of complicated and special-shaped section shaped steel, belongs to one kind of shaped steel, and is different from simple shape
Call.According to the difference of technique, hot rolling deformed steel, cold-drawn deformed steel, clod wash deformed steel, welding deformed steel etc. can be divided into again.
With the continuous improvement of China's industrialized level in recent years, the level of China's production rolled section steel was obtained significantly than last century
The lifting of degree.
As shown in figure 1,010 outer peripheral face of profile iron is uniformly distributed multiple grooves 011 with trapezoid cross section, in prior art
Processed using special stamping die, profile iron 010 is enclosed within special stamping die on the horizontal die of mould side, upper contour forming
Descending first groove 011 of punching press on 010 outer peripheral face of profile iron of drift, during upper contour forming drift backhaul, by profile iron 010 around
Its axis rotates predetermined angle, then goes up contour forming drift second groove 011 of descending punching press, needs rotation repeatedly can just complete
The punching press of the multiple grooves of 010 outer peripheral face of profile iron 011, working (machining) efficiency are very low.Due to repeatedly rotation, many of profile iron 010 are caused
011 error of division of individual groove is larger, causes that 011 symmetry of multiple grooves and position degree deviation are larger, and stamping quality is difficult to control to.
The content of the invention
Based on this, it is necessary to provide a kind of circumferential recess stamping machine for LED radiator, a punching press just can be simultaneously
Multiple grooves are formed, to solve the problems, such as that multiple groove symmetries and position degree deviation are larger in prior art.
A kind of circumferential recess stamping machine for LED radiator, including：Actuating unit, chassis, the rotating disk of circular configuration,
Guide plate and stamping parts；
The putting hole of the circle of insertion is offered at the axle center on the chassis, at the axle center of the rotating disk, insertion is offered
Circular through hole, offers the accommodating hole of the circle of insertion at the axle center of the guide plate；Around the placement on the chassis
Hole is provided with the boss of annular and the limiting section with the annular of the concentric setting of the boss, and the rotating disk is rotated and arranged
Between the boss and the limiting section；
The guide plate is fixedly connected with the chassis, and the rotating disk is located between the chassis and the guide plate；
Some pilot holes are offered on the rotating disk, some pilot holes are with the axle center of the rotating disk in transmitting clockwise
Shape is arranged；
Side on the guide plate towards the rotating disk offers some chutes, and some chutes are with the guide plate
Axle center in emitting shape arrange；
The slide block that the stamping parts is included punching press bar and is connected with punching press bar rotation, the slide block are slideably positioned in
In the pilot hole, the punching press bar is slideably positioned in the chute；
The actuating unit and the rotating disk drive connection, for driving the slide block edge when driving the rotating disk to rotate
The pilot hole slides, so that the punching press bar is along the slide.
In one of embodiment, the edge of the rotating disk stretches out a lug；The actuating unit includes flexible gas
Cylinder and connector, the telescopic cylinder are fixedly connected with the chassis by the connector, the telescopic shaft of the telescopic cylinder
It is hinged with the lug；The actuating unit also includes installation portion and the proximity switch being arranged on the installation portion, the peace
Dress portion is fixedly connected with the connector.
In one of embodiment, waist-shaped hole on the installation portion, is offered, the proximity switch inserts the waist-shaped hole
It is interior.
In one of embodiment, the proximity switch and the waist-shaped hole are two, two proximity switches one
In one correspondence two waist-shaped holes of insertion.
In one of embodiment, the chassis is circular configuration.
In one of embodiment, the guide plate is circular configuration.
The above-mentioned circumferential recess stamping machine for LED radiator by actuating unit driving rotating disk boss and limiting section it
Between stably rotate, and then band movable slider slides along pilot hole so that punching press bar along slide, so as to realize simultaneously to inserting
The profile iron of putting hole, through hole and accommodating hole carries out the punching press in multiple directions so that profile iron receiving in a plurality of directions
Power is balanced, improves the symmetry and position degree of stamping forming multiple grooves, better controls over stamping quality.
Description of the drawings
Fig. 1 is evenly distributed with the profile iron of multiple grooves for outer peripheral face；
Structural representations of the Fig. 2 for the circumferential recess stamping machine for LED radiator of a preferred embodiment of the present invention；
Fig. 3 is the explosive view of the circumferential recess stamping machine shown in Fig. 2 for LED radiator；
Fig. 4 is a visual angle figure of guide plate shown in Fig. 2；
Fig. 5 is the structural representation of stamping parts shown in Fig. 2；
Fig. 6 is the structure chart of rotating disk, guide plate and stamping parts shown in Fig. 4.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.
As shown in Figures 2 and 3, wherein, Fig. 2 for a preferred embodiment of the present invention the circumference for LED radiator it is recessed
The structural representation of groove stamping machine 10, Fig. 3 are the explosive view of the circumferential recess stamping machine 10 shown in Fig. 2 for LED radiator.
Circumferential recess stamping machine 10 for LED radiator includes：Actuating unit 11, the rotating disk on chassis 12, circular configuration
13rd, guide plate 14 and stamping parts 15.
Guide plate 14 is fixedly connected with chassis 12.Rotating disk 13 is rotated and is arranged between chassis 12 and guide plate 14, Ke Yili
Xie Wei, rotating disk 13 is relative to chassis 12 and guide plate 14 with fixed axis rotation.Fixed with chassis 12 due to guide plate 14 and connected
Connect, it is to avoid during rotating disk 13 is rotated cause the guide plate 14 to rotate, so, increased for LED radiator
The stability of the work of circumferential recess stamping machine 10.
Offer putting hole 121, the circle of the circle of insertion at the axle center on chassis 12, rotating disk 13 and guide plate 14 respectively
Through hole 131 and circle accommodating hole 141.Some pilot holes 132 are offered on rotating disk 13, some pilot holes 132 are with rotating disk
13 axle center is arranged in emitting shape clockwise.
The boss 122 of annular, in the present embodiment, is set on chassis 12, and boss 122 is arranged around putting hole 121.Through hole
131 are circle, and are enclosed within the outside of boss 122 so that rotating disk 13 is rotated around boss 122.It is easy to understand, in order to ensure rotating disk 13
Stability when rotating around boss 122, the diameter of through hole 131 are suitable with the diameter of boss 122, it is ensured that rotating disk 13 is rotated
Smoothness.
In the present embodiment, in order to further realize stability that rotating disk 13 is rotated on chassis 12, it is provided with chassis 12
The limiting section 123 of annular, limiting section 123 and 122 concentric setting of boss, so, rotating disk 13 just can be in boss 122 and limit
With its axis rotation between position portion 123, stability when rotating disk 13 is rotated is improved.
In the present embodiment, chassis 12 is circular configuration, and guide plate 14 is circular configuration.In other embodiments, chassis 12,
Guide plate 14 can also be square structure, ellipsoidal structure etc..
As shown in figure 4, which is a visual angle figure of guide plate 14 shown in Fig. 2.On guide plate 14 towards rotating disk 13 side
Some chutes 142 are offered, some chutes 142 are arranged in emitting shape with the axle center of guide plate 14.
Fig. 5 and Fig. 6 is referred in the lump, wherein, structural representations of the Fig. 5 for stamping parts 15 shown in Fig. 2, Fig. 6 are institute in Fig. 3
Show the structure chart of rotating disk 13, guide plate 14 and stamping parts 15.Stamping parts 15 include punching press bar 151 and with 151 turns of punching press bar
The slide block 152 of dynamic connection, slide block 152 are slideably positioned in pilot hole 132, and punching press bar 151 is slideably positioned in chute 142.
In practical application, profile iron 010 is inserted into putting hole 121, through hole 131 and accommodating hole 141, so, in 13 turns of driving rotating disk
When dynamic, band movable slider 152 slides along pilot hole 132, so that punching press bar 151 slides along chute 142, profile iron 010 is rushed
Pressure, while forming multiple grooves 011 by realizing a punching press.
Referring again to Fig. 2 and Fig. 3, actuating unit 11 and 13 drive connection of rotating disk, the band when driving rotating disk 13 is rotated is realized
Movable slider 152 slides along pilot hole 132 so that punching press bar 151 slides along chute 142, realize several punching press bars 151 shrink and
Open, due to several 151 uniform arrangements of punching press bar, during punching press profile iron 010, simultaneously profile iron 010 can be carried out multiple
Punching press on uniform direction so that the stress equalization in a plurality of directions of profile iron 010, improves stamping forming multiple grooves 011
Symmetry and position degree, better control over stamping quality.In the present embodiment, the edge of rotating disk 13 stretches out a lug 133, moves
Force mechanisms 11 include telescopic cylinder 111 and connector 112, and telescopic cylinder 111 is fixedly connected with chassis 12 by connector, stretch
The telescopic shaft 1111 of cylinder 111 is hinged with lug 133.For fit lugs 133, near telescopic shaft 1111 annular it is spacing
Portion 123 opens up jagged 1231, it is to avoid when telescopic cylinder 111 drives lug 133 to rotate, cause the stop to lug 133.
In order to control the amplitude of the rotation of rotating disk 13, it is to avoid because out of control during 111 driving rotating disk 13 of telescopic cylinder, cause punching press bar
The punching press amplitude of 151 pairs of profile irons 010 is excessive and damage profile iron 010 and stamping parts 15, driving structure 11 also includes installation portion
113 are fixedly connected with connector 112 with the proximity switch 114 being arranged on installation portion 113, installation portion 113.Proximity switch 114
Without the need for carrying out directly contact with telescopic shaft 1111, when the link position of telescopic shaft 1111 and lug 133 is close proximity to switch 114,
And it is sensed after, proximity switch 114 can then produce trigger, and external control unit outside just can be according to trigger control
The telescopic shaft 1111 of telescopic cylinder 111, realizes the effective control rotated to rotating disk 13, increases recessed for the circumference of LED radiator
The reliability and stability of the work of groove stamping machine 10.And the stable performance of proximity switch 114, frequency response be fast, application life
Length, strong antijamming capability etc., and have waterproof, it is shockproof, corrosion-resistant the features such as, can fit in the adverse circumstances such as many dirt, greasy dirt
With expanding the range of application of the circumferential recess stamping machine 10 for LED radiator.In order to the rotation amplitude by rotating disk 13 is controlled
In the range of needs, proximity switch 114 and the waist-shaped hole are two, two 114 interval settings of proximity switch, and one by one
In correspondence two waist-shaped holes of insertion.
Adjustment proximity switch 114 offers waist-shaped hole on the position of installation portion 113, installation portion 113 and (schemes not for convenience
Mark), in the insertion waist-shaped hole of proximity switch 114.So, when the amplitude for needing to rotate rotating disk 13 is adjusted, open being close to
Close 114 to move in waist-shaped hole and be fixed to ad-hoc location.
Referring again to Fig. 5 and Fig. 6, for the ease of liquidating, press strip 151 is changed, and punching press bar 151 includes pulling bar 1511
With slider bar 1512, slide block 152 and slider bar 1512 rotate and be connected, and pulling bar 1511 is bolted away from slide block 152
Slider bar 1512 end, the bottom of 14 upper hopper chute 142 of guide plate opens up bar hole 143, pulls bar 1511 along bar hole 143
Slide and arrange.So, without the need for spliting to rotating disk 13 and guide plate 14, it is possible to pull on bar 1511 and slider bar 1512
Split, and taken out via bar hole 143, be conveniently replaceable pulling bar 1511.
In actual applications, preferably, rotating disk 13 and chassis 12 are ferrous materials, in order to mitigate rotating disk 13 with chassis 12
Abrasion, needs to reduce the friction factor between rotating disk 13 and chassis 12, the contact surface in the present embodiment, on chassis 12 with rotating disk 13
On be coated with solid lubricating film material, the solid lubricating film material is consisted of the following composition：19wt%～32wt%'s
The cobalt of a diameter of 28um～71um, the fluorographite of a diameter of 30nm～56nm of 13wt%～27wt%, 8wt%～15wt%
Sodium fluoride, the zirconium dioxide of 25wt%～48wt%, the binding agent of 10wt%～31wt%.
In the solid lubricating film material, the cobalt of a diameter of 28um～71um is magnetic nano-particle, while having
Higher hardness, intensity and anti-wear performance, are easily adsorbed onto metal material during rotating disk 13 with 12 Relative friction of chassis
Contact surface.In the present invention, the content of cobalt is 19wt%～32wt%, preferably 22wt%～28wt%.The diameter of cobalt is preferred
For 45um～65um.
Fluorographite is a kind of carbon-graphite functional material that carbon and fluorine react generation at high temperature, as fluorographite is
Layer structure, and molecular force between layers is weaker, and distance between layers is 2 times of graphite, with excellent
Greasy property, and contact surface of the fluorographite of a diameter of 30nm～56nm easily in metal material during friction is heavy
Thin film is accumulated into, metal material surface can be securely attached to, it is difficult for drop-off when there is friction.In the present invention, fluorographite
Content be 13wt%～27wt%, preferably 19wt%～22wt%.The diameter of fluorographite is preferably 41nm～52nm.
In the test of punching press repeatedly is carried out to profile iron, rotating disk 13 rotates switching clockwise and anticlockwise relative to chassis 12
Frequency it is very high, form hot environment in contact surface, best results of the sodium fluoride used as additive as additive, and
And it is preferable with the cooperative effect of other compositions in the solid lubricating film material, easily transfer membrane is formed in contact surface, strengthen
The lubrication property of the solid lubricating film material, improves the temperature tolerance of the solid lubricating film material, and can be in rotating disk
The higher protective film of shear strength is formed between 13 and chassis 12.In the present invention, the content of sodium fluoride be 8wt%～
15wt%, preferably 10wt%～14wt%.
Zirconium dioxide (chemical formula：ZrO2) be zirconium main oxides, be white odorless, tasteless crystal under usual condition, it is difficult
It is dissolved in water, hydrochloric acid and dilute sulfuric acid.Chemical property torpescence, and there is high-melting-point, high resistivity, high index of refraction and low-thermal-expansion system
Several property, makes it important exotic material, ceramic insulating material and ceramic opacifier, and band gap is about 5eV
～7eV.
Application of the plasma spraying Zirconia Thermal Barrier Coating in aviation and industrial gas turbine has been great progress,
The turbine portion of gas turbine is had been used within certain limits.Due to the painting of the solid lubricating film material containing zirconium dioxide
Layer can reduce the temperature of air cooling high-temperature component, therefore can significantly improve the durable of high-temperature component rotating disk 13 and chassis 12
Property.In the present invention, the content of zirconium dioxide is 25wt%～48wt%, preferably 31wt%～40wt%.
Binding agent is the guarantee of adhesion strength between other compositions and contact surface in solid lubricating film material.Binding agent is removed
Outside sizing material, also including auxiliary elements such as solvent, firming agent, toughener, preservative, coloring agent, defoamer.Binding agent is except most
Outside conventional animal glue, also including synthetic resin, rubber and paint etc..During rotating disk 13 with 12 Relative friction of chassis, glue
Knot agent increased other compositions and the adsorption strength of the contact surface of metal material in solid lubricating film material, improve solid lubrication
The durability and greasy property of thin-film material.
The above-mentioned circumferential recess stamping machine 10 for LED radiator is by 11 driving rotating disk 13 of actuating unit in boss 122
Stably rotate and limiting section 123 between, and then band movable slider 152 slides along pilot hole 132 so that punching press bar 151 is along chute
142 slide, so as to realize while the profile iron 010 to inserting putting hole 121, through hole 131 and accommodating hole 141 carries out multiple sides
Punching press upwards so that the stress equalization in a plurality of directions of profile iron 010, improves the right of stamping forming multiple grooves 011
Title degree and position degree, better control over stamping quality.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (4)
1. a kind of circumferential recess stamping machine for LED radiator, it is characterised in that include：Actuating unit, chassis, circular knot
The rotating disk of structure, guide plate and stamping parts；
The putting hole of the circle of insertion is offered at the axle center on the chassis, the circle of insertion at the axle center of the rotating disk, is offered
Through hole, the accommodating hole of the circle of insertion is offered at the axle center of the guide plate；
The boss and the annulus with the concentric setting of the boss of annular are provided with the chassis around the putting hole
The limiting section of shape, the rotating disk are rotated and are arranged between the boss and the limiting section；
The guide plate is fixedly connected with the chassis, and the rotating disk is located between the chassis and the guide plate；
Some pilot holes are offered on the rotating disk, some pilot holes are arranged in emitting shape clockwise with the axle center of the rotating disk
Row；
Side on the guide plate towards the rotating disk offers some chutes, and some chutes are with the axle of the guide plate
The heart is arranged in emitting shape；
The slide block that the stamping parts is included punching press bar and is connected with punching press bar rotation, the slide block is slideably positioned in described
In pilot hole, the punching press bar is slideably positioned in the chute；
The actuating unit and the rotating disk drive connection, for driving the slide block along described when driving the rotating disk to rotate
Pilot hole slides, so that the punching press bar is along the slide.
2. the circumferential recess stamping machine for LED radiator according to claim 1, it is characterised in that the rotating disk
Edge stretches out a lug；The actuating unit includes telescopic cylinder and connector, and the telescopic cylinder is by the connection
Part is fixedly connected with the chassis, and the telescopic shaft of the telescopic cylinder is hinged with the lug；The actuating unit also includes peace
Dress portion and the proximity switch being arranged on the installation portion, the installation portion are fixedly connected with the connector.
3. the circumferential recess stamping machine for LED radiator according to claim 2, it is characterised in that the installation portion
On offer waist-shaped hole, the proximity switch is inserted in the waist-shaped hole.
4. the circumferential recess stamping machine for LED radiator according to claim 3, it is characterised in that described being close to is opened
Close and the waist-shaped hole is two, two proximity switches are corresponded in two waist-shaped holes of insertion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293909.5A CN104874659B (en) | 2015-06-01 | 2015-06-01 | Circumferential groove punching machine used for LED (Light Emitting Diode) radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293909.5A CN104874659B (en) | 2015-06-01 | 2015-06-01 | Circumferential groove punching machine used for LED (Light Emitting Diode) radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104874659A CN104874659A (en) | 2015-09-02 |
| CN104874659B true CN104874659B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510293909.5A Active CN104874659B (en) | 2015-06-01 | 2015-06-01 | Circumferential groove punching machine used for LED (Light Emitting Diode) radiator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971391B (en) * | 2017-10-24 | 2019-03-26 | 山东科技大学 | A kind of micro- stamping equipment of closely spaced array high speed |
| CN109171404B (en) * | 2018-08-31 | 2021-06-29 | 瑞一(中国)科技发展有限公司 | Double-pressure-groove type telescopic straw and pressure groove processing device thereof |
| CN110666060A (en) * | 2019-09-07 | 2020-01-10 | 无锡东港电池配件有限公司 | Stamping equipment for producing battery steel shell |
| CN110524222A (en) * | 2019-09-27 | 2019-12-03 | 吴雪祥 | A kind of stamping equipment of the LED lamp with lamps and lanterns plug waterproof tensile hardware circular boop |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921688B2 (en) * | 1978-08-18 | 1984-05-22 | 富士電機株式会社 | Product accumulation and extraction device in notching machine |
| JP3281175B2 (en) * | 1994-04-18 | 2002-05-13 | 株式会社東芝 | Press forming equipment |
| US6745468B1 (en) * | 1999-04-29 | 2004-06-08 | Schmitt Marine Steering Wheels, Inc. | Method of manufacturing a boat steering wheel with finger grip indentations |
| CN2925678Y (en) * | 2006-06-30 | 2007-07-25 | 张海勇 | Claw clutch of circular punch |
| CN201711412U (en) * | 2010-05-25 | 2011-01-19 | 东昌电机(深圳)有限公司 | Groove forming device |
| CN204685894U (en) * | 2015-06-01 | 2015-10-07 | 东莞市闻誉实业有限公司 | For the circumferential recess stamping machine of LED radiator |
| CN204685779U (en) * | 2015-06-01 | 2015-10-07 | 东莞市闻誉实业有限公司 | For the circumferential recess stamping machine of LED radiator |
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