CN115674723B - Quick change device and shop silk machine - Google Patents
Quick change device and shop silk machine Download PDFInfo
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- CN115674723B CN115674723B CN202211324666.3A CN202211324666A CN115674723B CN 115674723 B CN115674723 B CN 115674723B CN 202211324666 A CN202211324666 A CN 202211324666A CN 115674723 B CN115674723 B CN 115674723B
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- base plate
- drag chain
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- assembly
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Abstract
The invention relates to a quick-change device and a wire laying machine, wherein the quick-change device comprises a rotary drag chain assembly, a base plate assembly and a switching plate assembly; the base plate assembly comprises a base plate, a zero point positioner, a rubber sleeve and a first plug, the rotary drag chain assembly can partially rotate, the base plate is installed on the rotary drag chain assembly, and the zero point positioner, the rubber sleeve and the first plug are installed on one surface, far away from the rotary drag chain assembly, of the base plate; the switching board assembly comprises a switching board, a blind rivet, a customized butt joint element and a second plug, wherein the blind rivet, the customized butt joint element and the second plug are installed on one surface of the switching board, the blind rivet and the zero point positioner can be connected, the customized butt joint element and the rubber sleeve can be connected through an air circuit, and the second plug and the first plug can be connected through a detachable circuit. The laying head and the swinging main body can be quickly disassembled and assembled, so that the efficiency of material changing and overhauling of the laying head is improved.
Description
Technical Field
The invention relates to the technical field of wire laying, in particular to a quick-changing device and a wire laying machine.
Background
The composite material is a main structural material of a modern large-scale aircraft, and the wire laying machine is carbon fiber composite material member laying and forming equipment. The prepreg roll used by the wire laying machine has a single strand length of about 1500M. When the prepreg coil is exhausted, the filaments are blocked, the filament bundles are cut continuously or other faults occur, the shutdown treatment is needed, the opening probability is affected, and the production efficiency is affected. In addition, when parts of different curvatures need to be produced, a different number or width of tows of the spinneret needs to be used. At present, the disassembly and the replacement of the wire laying head are inconvenient, the efficiency of material changing and fault handling is affected, and the processing efficiency is further affected.
Therefore, the invention provides a quick-change device and a wire laying machine.
Disclosure of Invention
(1) Technical problem to be solved
The invention provides a quick-changing device and a wire laying machine, which are used for solving the technical problem that a wire laying head is inconvenient to change in the prior art.
(2) Technical proposal
In order to solve the technical problems, the invention provides a quick-change device, which comprises a rotary drag chain assembly, a base plate assembly and a switching plate assembly;
the base plate assembly comprises a base plate, a zero point positioner, a rubber sleeve and a first plug, the rotary drag chain assembly can partially rotate, the base plate is installed on the rotary drag chain assembly, and the zero point positioner, the rubber sleeve and the first plug are installed on one surface, far away from the rotary drag chain assembly, of the base plate;
the switching board assembly comprises a switching board, a blind rivet, a customized butt joint element and a second plug, wherein the blind rivet, the customized butt joint element and the second plug are installed on one surface of the switching board, the blind rivet and the zero point positioner can be connected, the customized butt joint element and the rubber sleeve can be connected through an air circuit, and the second plug and the first plug can be connected through a detachable circuit.
Optionally, the base plate assembly further comprises a guide post, the guide post is mounted on one surface of the base plate, which is far away from the rotary drag chain assembly, the switching plate assembly further comprises a guide sleeve, and the guide post can be clamped into the guide sleeve.
Optionally, the rotary drag chain assembly includes a spacer, an outer link, an inner link and a drag chain, the spacer and the outer link are surrounded on the circumference of the inner link, the drag chain is connected between the inner link and the outer link, the inner link is rotatable, the base plate is mounted on the inner link, and in addition, the base plate is mounted on the swing body by a second screw.
Optionally, the inner connecting frame and the base plate are connected by a screw.
Optionally, an air hole is formed in the side face of the base plate, and a drawing pin is inserted into the air hole.
Optionally, the blind rivet includes a positioning blind rivet, a directional blind rivet and a locking blind rivet, each of the positioning blind rivets is capable of being positioned and connected with one of the zero point positioners, each of the directional blind rivets is capable of being positioned and connected with one of the zero point positioners, and each of the locking blind rivets is capable of being locked and connected with the zero point positioners.
The invention also provides a wire laying machine which comprises a swinging main body, a wire laying head and the quick-changing device, wherein the rotary drag chain assembly is rotatably arranged on the swinging main body, and the wire laying head is connected to the switching plate.
Optionally, the spinneret is connected to the switching plate by a first screw.
(3) Advantageous effects
In summary, in the quick-change device and the wire laying machine of the invention, the rotary drag chain assembly is arranged on the swinging main body of the wire laying machine, the rotary drag chain assembly can at least partially rotate, the base plate can rotate along with the rotary drag chain assembly, and the switching plate is used for installing the wire laying head. When the base plate and the switching plate are detachably connected through the zero point positioner and the blind rivet, the rubber sleeve and the customized butt joint element are connected through the air passage to be communicated with the circuit, and the first plug and the second plug are in butt joint, so that quick assembly and disassembly between the wire laying head and the swinging main body can be realized, and the efficiency of material changing and maintenance of the wire laying head is improved. The switching plate assembly can be installed on the wire laying heads with different specifications, so that the interchangeable assembly of different wire laying heads and swinging main bodies can be met, and the interchangeability and the universality are good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of a quick-change device according to an embodiment of the invention;
FIG. 2 is a schematic view of a base plate assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a switch board assembly according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a rotary drag chain assembly in accordance with an embodiment of the present invention;
FIG. 5 is a diagram of a partial connection relationship between a base plate assembly and a switch plate assembly in accordance with one embodiment of the present invention;
FIG. 6 is a schematic diagram of another embodiment of a switch board assembly according to the present invention;
FIG. 7 is a schematic illustration of the connection of a wire laying machine in accordance with an embodiment of the present invention.
In the figure: 1000-a wire laying machine; 100-quick change device; 10-a rotary drag chain assembly; 11-a spacer; 12-an outer connecting frame; 13-an inner connecting frame; 14-drag chain; 20-a base plate assembly; 21-a base plate; 22-zero point locator; 23-rubber sleeve; 24-a first plug; 25-guide posts; 26-drawing a pin; 30-a switch board assembly; 31-a switching board; 32-blind rivet; 322-positioning a blind rivet; 324-directional blind rivet; 326-locking the blind rivet; 33-customizing the docking element; 34-a second plug; 35-a guide sleeve; 40-screw; 50-a first screw; 60-second screws; 200-swinging the body; 300-wire laying head.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. The invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of the known wire spreader 1000 techniques is omitted herein for the sake of brevity.
Referring to fig. 1 to 3, the present embodiment provides a quick-change device 100, which includes a rotary drag chain assembly 10, a base plate assembly 20 and a switch plate assembly 30; the base plate assembly 20 comprises a base plate 21, a zero point positioner 22, a rubber sleeve 23 and a first plug 24, the rotary drag chain assembly 10 can partially rotate, the base plate 21 is mounted on the rotary drag chain assembly 10, and the zero point positioner 22, the rubber sleeve 23 and the first plug 24 are mounted on one surface of the base plate 21 far away from the rotary drag chain assembly 10; the switch board assembly 30 comprises a switch board 31, a blind rivet 32, a customized docking element 33 and a second plug 34, wherein the blind rivet 32, the customized docking element 33 and the second plug 34 are installed on one surface of the switch board 31, the blind rivet 32 and the zero point positioner 22 can be connected, the customized docking element 33 and the rubber sleeve 23 can be connected through an air circuit, and the second plug 34 and the first plug 24 can be connected through a detachable circuit.
Wherein the rotary drag chain assembly 10 is mounted on the swing body 200 of the wire spreader 1000, the rotary drag chain assembly 10 can at least partially rotate, the base plate 21 can rotate along with the rotary drag chain assembly 10, and the switching plate 31 is used for mounting the wire spreader 300. When the base plate 21 and the switching plate 31 are detachably connected through the zero point positioner 22 and the blind rivet 32, the rubber sleeve 23 and the customized butt joint element 33 are connected through the air passage to be communicated with the circuit, and the first plug 24 and the second plug 34 are in butt joint, so that quick disassembly and assembly between the wire laying head 300 and the swinging main body 200 can be realized, and the material changing and overhauling efficiency of the wire laying head 300 is improved. One switching plate assembly 30 can be installed on the wire laying heads 300 with different specifications, so that the interchangeable assembly of different wire laying heads 300 and the swinging main body 200 can be satisfied, and the interchangeability is good.
The first plug 24 and the second plug 34 may be integrated plugs, which has good shielding property, and stable and reliable connection, and no unstable plug connection, stop, signal error or interference, etc.
In one embodiment, the base plate assembly 20 further includes a guide post 25, the guide post 25 is mounted on a surface of the base plate 21 away from the rotary drag chain assembly 10, the switch plate assembly 30 further includes a guide sleeve 35, and the guide post 25 is capable of being snapped into the guide sleeve 35. Through the matching of guide post 25 and uide bushing 35, have the guide effect to the connection between base plate subassembly 20 and the switch board subassembly 30, make zero point locator 22 and blind rivet 32 can be accurately connected, after gum cover 23 and customization butt joint component 33 switch on the gas circuit, the solenoid valve on the gas circuit is opened, makes each pneumatic element start-up work with the gas circuit intercommunication, and wherein, the solenoid valve can adopt two tee bend double electric control solenoid valves, safe and reliable.
Referring to fig. 4 to 6, in an embodiment, the rotary drag chain assembly 10 includes a spacer 11, an outer link 12, an inner link 13, and a drag chain 14, the spacer 11 and the outer link 12 are around the circumference of the inner link 13, the drag chain 14 is connected between the inner link 13 and the outer link 12, the inner link 13 is rotatable, and the base plate 21 is mounted on the inner link 13. The spacer 11 and the outer connecting frame 12 are fixedly connected to the swing body 200, so as to protect the drag chain 14, the inner connecting frame 13 and the base plate assembly 20 are connected to the swing body 200 through the second screw 60, the drag chain 14 is used for protecting cables and air pipes and driving the cables and air pipes to rotate, and the rotation of 185 degrees of the laying head 300 can be adapted.
In an embodiment, the inner connecting frame 13 and the base plate 21 are connected by a screw 40, so that the assembly and disassembly are convenient, and the structure is simple.
In one embodiment, the side surface of the base plate 21 is provided with air holes, in which drawing pins 26 are inserted, the air holes are used for wire laying, and the drawing pins 26 are used for plugging the air holes.
In one embodiment, the staples 32 include positioning staples 322, orientation staples 324, and locking staples 326, each of the positioning staples 322 being capable of being positioned in connection with one of the zero point positioners 22, each of the orientation staples 324 being capable of being oriented in connection with one of the zero point positioners 22, each of the locking staples 326 being capable of being locked in connection with the zero point positioners 22. The cooperation of the positioning rivet 322 and the zero point positioner 22 can ensure repeated positioning accuracy, the cooperation of the positioning rivet 324 and the zero point positioner 22 can limit the freedom degree of the rotation direction, and the cooperation of the locking rivet 326 and the zero point positioner 22 can realize locking effect. Wherein directional blind rivet 324 and locking blind rivet 326 are mounted at 180 ° distribution along toggle plate 31.
Referring to fig. 7, in an embodiment, a wire spreader 1000 is further provided, which includes a swing body 200, a wire spreader 300, and the quick-change device 100, where the rotary drag chain assembly 10 is partially rotatably mounted on the swing body 200, and the wire spreader 300 is connected to the switching plate 31. The wire spreader 1000 of the present embodiment also has the above advantages, and will not be described herein.
In an embodiment, the spinneret 300 is connected to the switching plate 31 by the first screw 50, and is convenient to assemble and disassemble, and has a simple structure.
Based on the combination of the above embodiments, in one embodiment, the rotary drag chain assembly 10 and the base plate 21 are mounted on the swing body 200, and the spinneret 300 is mounted on the switch plate 31 in a switch assembly. The initial state is that the switching plate 31 is coupled to the base plate 21, wherein the base plate 21 is mounted on a rotating bearing of the lower portion of the swing body 200 by the second screw 60.
The step of replacing the spinneret 300 includes: the zero point positioner 22 and the blind rivet 32 are unlocked, the power supply of the wire laying head 300 is closed, the electromagnetic valve of the air source is closed, when the swinging main body 200 drives the rotary drag chain assembly 10 and the base plate assembly 20 to leave, the rubber sleeve 23 and the customized docking element 33 are disconnected to disconnect the air path, and the first plug 24 and the second plug 34 are disconnected to disconnect the circuit.
The swing body 200 then moves the rotary drag chain assembly 10 and the base plate assembly 20 over another switch assembly 30 with another spinneret 300 mounted thereon. The swinging main body 200 continues to move, so that the zero point positioner 22 is locked with the blind rivet 32 in the other switching plate assembly 30, the rubber sleeve 23 is in air circuit connection with the customized docking element 33 in the other switching plate assembly 30, the first plug 24 is in electric circuit connection with the second plug 34 in the other switching plate assembly 30, the replacement of the spinneret 300 is completed, finally, the power supply of the other spinneret 300 is started, and the air circuit is started again. The operation is simple, and one-key control operation can be realized through the electromagnetic valve.
The above is only an example of the present invention and is not limited to the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.
Claims (7)
1. The quick-change device is characterized by comprising a rotary drag chain assembly, a base plate assembly and a switching plate assembly;
the base plate assembly comprises a base plate, a zero point positioner, a rubber sleeve and a first plug, the rotary drag chain assembly can partially rotate, the base plate is installed on the rotary drag chain assembly, and the zero point positioner, the rubber sleeve and the first plug are installed on one surface, far away from the rotary drag chain assembly, of the base plate;
the switching board assembly comprises a switching board, a blind rivet, a customized butt joint element and a second plug, wherein the blind rivet, the customized butt joint element and the second plug are arranged on one surface of the switching board, the blind rivet and the zero point positioner can be connected, the customized butt joint element and the rubber sleeve can be connected through an air passage, and the second plug and the first plug can be connected through a detachable circuit;
the rotary drag chain assembly comprises a separation frame, an outer connecting frame, an inner connecting frame and a drag chain, wherein the separation frame and the outer connecting frame surround the peripheral surface of the inner connecting frame, the drag chain is connected between the inner connecting frame and the outer connecting frame, the inner connecting frame can rotate, and the foundation plate is installed on the inner connecting frame.
2. The quick change device of claim 1, wherein the base plate assembly further comprises a guide post mounted to a face of the base plate remote from the rotary drag chain assembly, the switch plate assembly further comprising a guide sleeve into which the guide post can be snapped.
3. The quick change device of claim 1, wherein the inner frame and the base plate are connected by a screw.
4. A quick change device according to any one of claims 1 to 3, wherein the side of the base plate is provided with air holes in which the drawing pins are inserted.
5. A quick change device according to any one of claims 1 to 3, wherein the staples comprise a locating staple, a directional staple and a locking staple, each of the locating staples being capable of being positioned in connection with one of the zero point positioners, each of the directional staples being capable of being positioned in connection with one of the zero point positioners, each of the locking staples being capable of being locked in connection with the zero point positioners.
6. A wire laying machine comprising a swinging body, a wire laying head and the quick change device according to any one of claims 1 to 5, said rotary drag chain assembly being rotatably mounted on said swinging body, said wire laying head being connected to said switch plate.
7. The wire laying machine of claim 6, wherein the wire laying head is attached to the switch plate by a first screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211324666.3A CN115674723B (en) | 2022-10-27 | 2022-10-27 | Quick change device and shop silk machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211324666.3A CN115674723B (en) | 2022-10-27 | 2022-10-27 | Quick change device and shop silk machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115674723A CN115674723A (en) | 2023-02-03 |
| CN115674723B true CN115674723B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211324666.3A Active CN115674723B (en) | 2022-10-27 | 2022-10-27 | Quick change device and shop silk machine |
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| CN (1) | CN115674723B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06234209A (en) * | 1993-02-09 | 1994-08-23 | Citizen Watch Co Ltd | Ink jet recording device |
| DE102007012608A1 (en) * | 2007-03-13 | 2008-10-02 | Eads Deutschland Gmbh | Method for producing preform for fiber composite structure suitable for power flows, involves providing flat fiber bands and cutting fiber band pieces from spread-out fiber band |
| CN214008396U (en) * | 2020-11-26 | 2021-08-20 | 山西省工业设备安装集团有限公司 | Waste gas treatment device for waste incineration power plant |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6005206A (en) * | 1998-05-07 | 1999-12-21 | Eaton Corporation | Electrical switching apparatus with improved contact arm carrier arrangement |
| WO1999061385A2 (en) * | 1998-05-26 | 1999-12-02 | J. Michael Richarde, Llc | System and method for manufacturing a carbon fiber composite |
| CH703098A2 (en) * | 2010-05-03 | 2011-11-15 | Peter A Mueller | Linkable drive. |
| US8954180B2 (en) * | 2010-08-06 | 2015-02-10 | Ingersoll Machine Tools, Inc. | Manufacturing process and apparatus having an interchangeable machine tool head with integrated control |
| US8534338B2 (en) * | 2010-10-15 | 2013-09-17 | Ingersoll Machine Tools, Inc. | Fiber delivery apparatus and system having a creel and fiber placement head with polar axis of rotation |
| US8919409B2 (en) * | 2011-03-25 | 2014-12-30 | Fives Machining Systems, Inc. | Dockable cut clamp and restart mechanism for a fiber placement head |
| DE102012019705B4 (en) * | 2012-09-28 | 2017-02-23 | Tajima GmbH | Feeder for feeding a fiber reinforcement and method |
| US9732876B2 (en) * | 2013-11-05 | 2017-08-15 | Edco Usa | Retarder control valve assembly and system for rail cars |
| CN104626610A (en) * | 2015-01-30 | 2015-05-20 | 武汉大学 | Modularized wire pavement head for automatically paving composite material and method |
| US11015573B2 (en) * | 2016-12-28 | 2021-05-25 | Vestas Wind Systems A/S | Connection joint for a sectional wind turbine rotor blade and associated methods |
| CN108729193B (en) * | 2018-07-24 | 2021-04-13 | 中国航空制造技术研究院 | Composite material fiber laying guiding and rotary cutting integrated device |
| US10981342B2 (en) * | 2018-11-13 | 2021-04-20 | Electroimpact, Inc. | Servo motor tension control for modular AFP head assembly |
| CN110026946A (en) * | 2019-04-29 | 2019-07-19 | 深圳市迈特迅科技有限公司 | A kind of device of fast changeable jig |
| CN110394997B (en) * | 2019-07-31 | 2020-06-30 | 南京航空航天大学 | Wire laying equipment for ring frame composite material workpiece and working method |
| CN211870629U (en) * | 2019-09-12 | 2020-11-06 | 苏州赛腾精密电子股份有限公司 | Turning device and automatic system |
| CN111152058A (en) * | 2020-01-03 | 2020-05-15 | 中国船舶重工集团公司第七0七研究所 | Fast switching flexible system suitable for multi-variety small-batch production |
| CN111618877A (en) * | 2020-06-12 | 2020-09-04 | 国网天津市电力公司 | Power distribution network operation robot, tool quick-changing device and control system and method thereof |
| CN113601211A (en) * | 2021-08-06 | 2021-11-05 | 洛阳航准精密制造有限公司 | Manufacturing auxiliary system and intelligent processing platform |
| CN217258551U (en) * | 2022-03-17 | 2022-08-23 | 合肥通晟智能装备有限公司 | Transfer frame with rotating function for rapidly replacing automatic wire laying head |
| CN114789461A (en) * | 2022-05-26 | 2022-07-26 | 国网河北省电力有限公司石家庄供电分公司 | Circuit breaker replacement operation robot |
-
2022
- 2022-10-27 CN CN202211324666.3A patent/CN115674723B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06234209A (en) * | 1993-02-09 | 1994-08-23 | Citizen Watch Co Ltd | Ink jet recording device |
| DE102007012608A1 (en) * | 2007-03-13 | 2008-10-02 | Eads Deutschland Gmbh | Method for producing preform for fiber composite structure suitable for power flows, involves providing flat fiber bands and cutting fiber band pieces from spread-out fiber band |
| CN214008396U (en) * | 2020-11-26 | 2021-08-20 | 山西省工业设备安装集团有限公司 | Waste gas treatment device for waste incineration power plant |
Non-Patent Citations (1)
| Title |
|---|
| 纯电动客车快换电池箱体锁紧系统设计;蒲金鹏;段俊强;;轻型汽车技术(第10期);9-13 * |
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| CN115674723A (en) | 2023-02-03 |
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