CN110449899A - A kind of hole saw edge rolling is welding integrated - Google Patents
A kind of hole saw edge rolling is welding integrated Download PDFInfo
- Publication number
- CN110449899A CN110449899A CN201910899537.9A CN201910899537A CN110449899A CN 110449899 A CN110449899 A CN 110449899A CN 201910899537 A CN201910899537 A CN 201910899537A CN 110449899 A CN110449899 A CN 110449899A
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- China
- Prior art keywords
- edge rolling
- hole saw
- seat
- driving part
- welding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005096 rolling process Methods 0.000 title claims abstract description 100
- 238000003466 welding Methods 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Sawing (AREA)
Abstract
The present invention relates to a kind of hole saw edge rolling is welding integrated, including edge rolling mechanism and welding mechanism, edge rolling mechanism includes installing the mounting base and feeding mechanism of steel band frame, mounting base is located at the setting push plate of steel band frame two sides and the groove that pre-bends, edge rolling molding seat is connected on rear side of mounting base, charging ram is set on the outside of edge rolling molding seat, on edge rolling molding seat, under be respectively set, lower edge rolling wedge, the wedge that pre-bends is set on front side of upper edge rolling wedge, feeding mechanism includes motor and several edge rolling locating rods, welding mechanism includes charging pipeline, before being set gradually on the upside of charging pipeline, the hold assembly that moves afterwards and upper, under, before, the hold assembly moved afterwards, it feeds pipeline two sides and several hole saw positioning seats is set, hole saw positioning seat two sides providing holes saws grip slipper, pressed seat is set on front side of hole saw positioning seat, on hole saw positioning seat in setting, under, before , the welding gun that moves, the welding integrated automatic edge rolling welding of hole saw edge rolling improve the production efficiency of hole saw side wall afterwards.
Description
Technical field
The present invention relates to hole saw more particularly to a kind of hole saw edge rolling are welding integrated.
Background technique
Hole saw is the tool for carrying out aperture, including hole saw includes annulus side wall and cup dolly, and annulus side wall uses steel band
Edge rolling welds to be formed, traditional artificial edge rolling welding, and edge rolling welding efficiency is low.
Summary of the invention
The applicant is directed to disadvantage mentioned above, has carried out Improvement, it is welding integrated to provide a kind of hole saw edge rolling.
The technical solution adopted in the present invention is as follows:
A kind of hole saw edge rolling is welding integrated, including edge rolling mechanism and welding mechanism, and the edge rolling mechanism includes mounting base
And feeding mechanism, steel band frame is connected in the mounting base, mounting base, which is located on front side of steel band frame, is arranged push plate, and push plate connects steel band drive
Dynamic component, mounting base, which is located on rear side of steel band frame, is arranged the groove that pre-bends, and edge rolling molding seat, edge rolling molding seat are connected on rear side of mounting base
Charging ram is arranged in outside, and the charging ram is also connect with steel band driving part, and lifting is installed above and below in the edge rolling molding seat
Upper edge rolling wedge and lower edge rolling wedge, the cooperation groove setting that pre-bends pre-bends wedge on front side of the upper edge rolling wedge, described
Feeding mechanism includes motor, and motor connects several edge rolling locating rods, and the welding mechanism includes rack, connected in the rack into
Expect pipeline, rack, which is located on the upside of charging pipeline, sets gradually transhipment vertical shift driving part and the traversing seat of feeding, the transhipment
Vertical shift driving part connects hold assembly, and the traversing seat of feeding passes through feeding lifting driver part and feeding vertical shift driving part
Hold assembly is connected, the rack is located at charging pipeline two sides and several hole saw positioning seats, hole saw positioning seat two sides are arranged
Traversing hole saw grip slipper is set, the pressed seat of vertical shift is set on front side of hole saw positioning seat, welding gun is set on the hole saw positioning seat,
The welding gun is connect by welding gun lifting driver part with the welding gun vertical shift seat in rack.
As a further improvement of the above technical scheme:
The steel band driving part, transhipment vertical shift driving part, feeding lifting driver part, feeding vertical shift driving part and
Welding gun lifting driver part is driving cylinder.
The upper edge rolling wedge and lower edge rolling wedge are all connected with wedge driving part, and the wedge driving part is also driving
Cylinder.
Hold assembly is finger cylinder.
The hole saw grip slipper connects grip slipper driving part, and the grip slipper driving part is driving cylinder.
The pressed seat connects pressed seat driving part, and the pressed seat driving part is driving cylinder.
Pusher driving part is set on rear side of the hole saw positioning seat, and the pusher driving part is driving cylinder, described to push away
Expect that driving part connects push rod, the push rod is through on the two sides of hole saw positioning seat, is equipped on front side of the hole saw positioning seat
Charging conduit, charging conduit are arranged with deflector chute, and the deflector chute end is located on the discharging transmission line connected in rack.
Beneficial effects of the present invention are as follows: the hole saw edge rolling is welding integrated, and steel band passes through the automatic edge rolling of edge rolling mechanism,
Then the good steel band of edge rolling is sent into welding mechanism automatic welding, steel band is disposably processed into hole saw side wall, improve hole saw side
Wall processing efficiency.
Detailed description of the invention
Fig. 1 is the welding integrated structural schematic diagram of hole saw edge rolling provided by the invention.
Fig. 2 is the front view of the welding integrated edge rolling mechanism of hole saw edge rolling provided by the invention.
Fig. 3 is the partial side elevation view of the welding integrated edge rolling mechanism of hole saw edge rolling provided by the invention.
Fig. 4 is the front view of the welding integrated welding mechanism of hole saw edge rolling provided by the invention.
Fig. 5 is the connection schematic diagram at the traversing seat of the welding integrated feeding of hole saw edge rolling provided by the invention.
Fig. 6 is the structural schematic diagram at the welding integrated hole saw positioning seat of hole saw edge rolling provided by the invention.
Fig. 7 is the connection schematic diagram of the welded machine welding gun of hole saw edge rolling provided by the invention
In figure: 1, mounting base；11, steel band frame；12, push plate；13, steel band driving part；14, pre-bend groove；15, edge rolling
Molding seat；16, wedge driving part；17, upper edge rolling wedge；18, lower edge rolling wedge；19, pre-bend wedge；110, charging ram；
2, feeding mechanism；21, motor；22, edge rolling locating rod；4, rack；41, pipeline is fed；42, vertical shift driving part is transported；43,
The traversing seat of feeding；44, feeding lifting driver part；45, feeding vertical shift driving part；46, discharging transmission line；5, hold assembly；
61, hole saw positioning seat；62, hole saw grip slipper；63, grip slipper driving part；64, pressed seat；65, pressed seat driving part；66,
Pusher driving part；67, push rod；68, charging conduit；69, deflector chute；7, welding gun；71, welding gun lifting driver part；72, welding gun is vertical
Move seat.
Specific embodiment
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
As shown in Figures 1 to 7, the hole saw edge rolling of the present embodiment is welding integrated, including edge rolling mechanism and welding mechanism, volume
Circular knitting machine structure includes mounting base 1 and feeding mechanism 2, connects steel band frame 11 in mounting base 1, mounting base 1, which is located on front side of steel band frame 11, to be set
Push plate 12 is set, push plate 12 connects steel band driving part 13, and mounting base 1, which is located on rear side of steel band frame 11, is arranged the groove 14 that pre-bends, peace
It fills and connects edge rolling molding seat 15 on rear side of seat 1, charging ram 110 is set on the outside of edge rolling molding seat 15, charging ram 110 also drives with steel band
Component 13 connects, and the upper edge rolling wedge 17 and lower edge rolling wedge 18 of lifting, upper edge rolling pressure is installed above and below in edge rolling molding seat 15
Seat 17 and lower edge rolling wedge 18 are all connected with wedge driving part 16, cooperate the groove 14 that pre-bends to be arranged on front side of upper edge rolling wedge 17 pre-
Bending wedge 19, feeding mechanism 2 include motor 21, and motor 21 connects several edge rolling locating rods 22, and welding mechanism includes rack 4,
Connection charging pipeline 41 in rack 4, rack 4, which is located on the upside of charging pipeline 41, sets gradually transhipment 42 He of vertical shift driving part
The traversing seat 43 of feeding, transhipment vertical shift driving part 42 connect hold assembly 5, and the traversing seat 43 of feeding passes through feeding lifting driver part
44 and feeding vertical shift driving part 45 connect hold assembly 5, rack 4 is located at charging 41 two sides of pipeline and the positioning of several hole saws is arranged
Traversing hole saw grip slipper 62 is arranged in seat 61,61 two sides of hole saw positioning seat, and hole saw grip slipper 62 connects grip slipper driving part 63,
The pressed seat 64 of vertical shift is set on front side of hole saw positioning seat 61, and pressed seat 64 connects pressed seat driving part 65, hole saw positioning seat 61
Pusher driving part 66 is arranged in rear side, and pusher driving part 66 connects push rod 67, and push rod 67 is through the two sides of hole saw positioning seat 61
On, charging conduit 68 is equipped on front side of hole saw positioning seat 61, charging conduit 68 is arranged with deflector chute 69, and 69 end of deflector chute is located at
On the discharging transmission line 46 connected in rack 4, welding gun 7 is set, welding gun 7 passes through welding gun lifting driver part on hole saw positioning seat 61
71 connect with the welding gun vertical shift seat 72 in rack 4.
Steel band driving part 13, wedge driving part 16, transhipment vertical shift driving part 42, feeding lifting driver part 44,
Feeding vertical shift driving part 45, grip slipper driving part 63, pressed seat driving part 65, pusher driving part 66 and welding gun lifting
Driving part 71 is driving cylinder.
Hold assembly 5 is finger cylinder.
The hole saw edge rolling of the present embodiment is welding integrated in use, several steel bands are placed in steel band frame 11, then steel band
Driving part 13 drives push plate 12 to move, and moves forward the lowermost steel band in steel band frame 11 by push plate 12, is first moved to
Pre-bend groove 14, and then the wedge driving part 16 of upside acts, in drives edge rolling wedge 17 with pre-bend wedge 19 together
Decline, by pre-bending, wedge 19 cooperates the groove 14 that pre-bends, and first bends steel band both ends, then the wedge driving part of upside
16 rise reset, and push plate 12 acts again pushes latter piece of steel band, the steel band position for replacing both ends to bend under the action of push plate 12
It sets, and the steel band that both ends are bent is moved to edge rolling molding seat 15, then the wedge driving part 16 of upside drives upper edge rolling pressure
Seat 17 pushes a bending, and the wedge driving part 16 of downside drives lower edge rolling wedge 18 to rise secondary bending again, can be by steel
Band is bonded with cylindrical edge rolling molding seat 15, edge rolling molding, and last steel band driving part 13 acts again will by charging ram 110
The molding hole saw of edge rolling is shifted onto the edge rolling locating rod 22 of feeding mechanism 2 on edge rolling molding seat 15, and weld seam is located directly below at this time；
The motor 21 of feeding mechanism 2 drives edge rolling locating rod 22 to turn to 4 side of rack, and weld seam is located directly below at this time,
Then transhipment vertical shift driving part 42 drives hold assembly 5 to move at edge rolling locating rod 22, clamps volume by hold assembly 5
Then the good steel band of edge rolling in circle locating rod 22 transports vertical shift driving part 42 and hold assembly 5 is driven to reset, makes hold assembly
5 move on charging pipeline 41, and then hold assembly 5 decontrols the good steel band of edge rolling, and the good steel band of edge rolling is placed into charging
It is conveyed on pipeline 41.
When the good steel band of edge rolling moves to traversing 43 lower section of seat of feeding, then feeding lifting driver part 44 drives feeding vertical
It moves driving part 45 and hold assembly 5 declines, then the good steel band of edge rolling is clamped by hold assembly 5, then the traversing seat 43 of feeding
Drive feeding lifting driver part 44, feeding vertical shift driving part 45 and hold assembly 5 traversing, making edge rolling, good steel band moves to
The front side of hole saw positioning seat 61, then feeding vertical shift driving part 45 drives hold assembly 5 and the good steel band vertical shift of edge rolling thereon,
Making edge rolling, good steel band is set on the positioning cylinder of hole saw positioning seat 61, and then hold assembly 5 decontrols the good steel band of edge rolling, is taken
Feeding vertical shift driving part 45, feeding lifting driver part 44 and the traversing movement of seat 43 of feeding reset, then grip slipper driving portion
Part 63 drives the hole saw grip slipper 62 of two sides that the good steel band of edge rolling is clamped on the positioning cylinder of hole saw positioning seat 61, pressed seat
Driving part 65 drives pressed seat 64 to push down the good steel band of edge rolling, completes positioning for the good steel band of edge rolling, welding gun lifting driving
Component 71 drives welding gun 7 to decline, and 7 plumb joint of welding gun is made to be bonded weld seam, and welding gun vertical shift seat 72 drives welding gun lifting driver part 71
With welding gun 7 along weld seam vertical shift, welding line automatic welding can be completed by welding gun 7 and connect, pusher driving part 66 starts after the completion of welding,
The hole saw side wall being welded on the positioning cylinder of hole saw positioning seat 61 can be pushed down by push rod 67, pass through charging conduit 68, and
By deflector chute 69, the hole saw side wall being welded is made to fall on 46 top discharge of discharging transmission line.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that the present invention can make any type of modification without prejudice to basic structure of the invention.
Claims (7)
1. a kind of hole saw edge rolling is welding integrated, it is characterised in that: including edge rolling mechanism and welding mechanism, edge rolling mechanism packet
Mounting base (1) and feeding mechanism (2) are included, connects steel band frame (11) on the mounting base (1), mounting base (1) is located at steel band frame
(11) push plate (12) are arranged in front side, and push plate (12) connects steel band driving part (13), and mounting base (1) is located on rear side of steel band frame (11)
Setting pre-bends groove (14), connects edge rolling molding seat (15) on rear side of mounting base (1), and pusher is arranged on the outside of edge rolling molding seat (15)
Bar (110), the charging ram (110) also connect with steel band driving part (13), and the edge rolling molding seat (15) sets respectively above and below
The upper edge rolling wedge (17) and lower edge rolling wedge (18) of lifting are set, cooperates the groove that pre-bends on front side of the upper edge rolling wedge (17)
(14) setting pre-bends wedge (19), and the feeding mechanism (2) includes motor (21), and motor (21) connects several edge rolling locating rods
(22), the welding mechanism includes rack (4), and connection charging pipeline (41) on the rack (4), rack (4) is located at charging
Transhipment vertical shift driving part (42) and the traversing seat of feeding (43), the transhipment vertical shift driving portion are set gradually on the upside of pipeline (41)
Part (42) connects hold assembly (5), and the traversing seat of feeding (43) is driven by feeding lifting driver part (44) and feeding vertical shift
Dynamic component (45) connects hold assembly (5), and the rack (4) is located at charging pipeline (41) two sides and several hole saw positioning seats are arranged
(61), traversing hole saw grip slipper (62) is arranged in hole saw positioning seat (61) two sides, and setting is vertical on front side of hole saw positioning seat (61)
The pressed seat (64) of shifting, is arranged welding gun (7) on the hole saw positioning seat (61), and the welding gun (7) goes up and down driving portion by welding gun
Part (71) is connect with the welding gun vertical shift seat (72) on rack (4).
2. hole saw edge rolling according to claim 1 is welding integrated, it is characterised in that: the steel band driving part (13),
Transport vertical shift driving part (42), feeding lifting driver part (44), feeding vertical shift driving part (45) and welding gun lifting driving
Component (71) is driving cylinder.
3. hole saw edge rolling according to claim 1 is welding integrated, it is characterised in that: the upper edge rolling wedge (17) and under
Edge rolling wedge (18) is all connected with wedge driving part (16), and the wedge driving part (16) is also driving cylinder.
4. hole saw edge rolling according to claim 1 is welding integrated, it is characterised in that: hold assembly (5) is finger cylinder.
5. hole saw edge rolling according to claim 1 is welding integrated, it is characterised in that: hole saw grip slipper (62) connection
Grip slipper driving part (63), the grip slipper driving part (63) are driving cylinder.
6. hole saw edge rolling according to claim 1 is welding integrated, it is characterised in that: pressed seat (64) connection compresses
Seat driving part (65), the pressed seat driving part (65) are driving cylinder.
7. hole saw edge rolling according to claim 1 is welding integrated, it is characterised in that: on rear side of the hole saw positioning seat (61)
It is arranged pusher driving part (66), the pusher driving part (66) is driving cylinder, pusher driving part (66) connection
Push rod (67), the push rod (67) are through on the two sides of hole saw positioning seat (61), and cooperation is set on front side of the hole saw positioning seat (61)
It sets charging conduit (68), charging conduit (68) is arranged with deflector chute (69), and deflector chute (69) end, which is located on rack (4), to be connected
Discharging transmission line (46) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899537.9A CN110449899B (en) | 2019-09-23 | 2019-09-23 | Hole saw rolling and welding integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899537.9A CN110449899B (en) | 2019-09-23 | 2019-09-23 | Hole saw rolling and welding integrated machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110449899A true CN110449899A (en) | 2019-11-15 |
| CN110449899B CN110449899B (en) | 2024-03-22 |
Family
ID=68492619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910899537.9A Active CN110449899B (en) | 2019-09-23 | 2019-09-23 | Hole saw rolling and welding integrated machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110449899B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975361A (en) * | 2020-09-07 | 2020-11-24 | 江苏酉立智能装备有限公司 | Automatic edge rolling and welding integrated machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020125229A1 (en) * | 2001-03-12 | 2002-09-12 | Stiers Daniel J. | Hemming and in-situ laser welding method and apparatus |
| CN102962302A (en) * | 2012-11-20 | 2013-03-13 | 浙江一铭机车部件有限公司 | Automatic rolling machine for bushings |
| CN103567669A (en) * | 2012-08-06 | 2014-02-12 | 沈浩 | Gantry type programmable control girth welding machine |
| CN104308547A (en) * | 2014-09-30 | 2015-01-28 | 福建长风压缩机有限公司 | Tank body production line |
| CN106584128A (en) * | 2015-10-16 | 2017-04-26 | 张家港市瑞昌智能机器系统有限公司 | Automatic assembly production line of spool |
| CN107127577A (en) * | 2017-04-06 | 2017-09-05 | 苏州金逸康自动化设备有限公司 | A kind of edge rolling welding equipment |
| CN210476148U (en) * | 2019-09-23 | 2020-05-08 | 无锡蓬天工具有限公司 | Hole saw edge rolling welding all-in-one machine |
-
2019
- 2019-09-23 CN CN201910899537.9A patent/CN110449899B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020125229A1 (en) * | 2001-03-12 | 2002-09-12 | Stiers Daniel J. | Hemming and in-situ laser welding method and apparatus |
| CN103567669A (en) * | 2012-08-06 | 2014-02-12 | 沈浩 | Gantry type programmable control girth welding machine |
| CN102962302A (en) * | 2012-11-20 | 2013-03-13 | 浙江一铭机车部件有限公司 | Automatic rolling machine for bushings |
| CN104308547A (en) * | 2014-09-30 | 2015-01-28 | 福建长风压缩机有限公司 | Tank body production line |
| CN106584128A (en) * | 2015-10-16 | 2017-04-26 | 张家港市瑞昌智能机器系统有限公司 | Automatic assembly production line of spool |
| CN107127577A (en) * | 2017-04-06 | 2017-09-05 | 苏州金逸康自动化设备有限公司 | A kind of edge rolling welding equipment |
| CN210476148U (en) * | 2019-09-23 | 2020-05-08 | 无锡蓬天工具有限公司 | Hole saw edge rolling welding all-in-one machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111975361A (en) * | 2020-09-07 | 2020-11-24 | 江苏酉立智能装备有限公司 | Automatic edge rolling and welding integrated machine |
| CN111975361B (en) * | 2020-09-07 | 2024-10-11 | 江苏酉立智能装备股份有限公司 | Automatic rolling and welding integrated machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110449899B (en) | 2024-03-22 |
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