CN112496728B - Automatic tightening mechanism with axial telescopic function - Google Patents
Automatic tightening mechanism with axial telescopic function Download PDFInfo
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- CN112496728B CN112496728B CN202011335837.3A CN202011335837A CN112496728B CN 112496728 B CN112496728 B CN 112496728B CN 202011335837 A CN202011335837 A CN 202011335837A CN 112496728 B CN112496728 B CN 112496728B
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- cylinder
- guide rod
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- 230000007246 mechanism Effects 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 12
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention provides an automatic tightening mechanism capable of axially stretching, which comprises: the tightening gun assembly is arranged on the sliding table assembly; wherein, the cylinder of the cylinder component is in an extending state when in a non-tightening state; after the engine gets into the station and falls to the position, the cylinder begins to retract, axial telescopic machanism passes through elasticity compression drive the slip table subassembly removes, and when the head of contact crankshaft pulley bolt, the cylinder still continues to retract, axial telescopic machanism can further compress the energy storage, screws up until accomplishing. The invention can ensure that the tightening gun has stable pressing force on the bolt in the tightening process, improves the consistency and the stability and reliability, and has small volume and low cost.
Description
Technical Field
The invention relates to an automatic tightening mechanism, in particular to an automatic tightening mechanism capable of axially stretching.
Background
At present, the bolt of the crankshaft pulley in the engine assembling process is screwed up manually, a screwing gun is installed on a sliding table through a support, and workers manually push the sliding table forwards until a sleeve is sleeved in the bolt of the crankshaft pulley and then screw up the bolt. Although automatic tightening is also applied in addition to manual tightening in the industry, most of the manual tightening machines are combinations of a tightening shaft and a servo motor matched lead screw or a multi-shaft robot, and the equipment cost is generally high. Therefore, the automatic tightening mechanism for engine assembly in the prior art mainly has the following problems: first, have the quality risk, during manual screwing up, hold by hand and screw up the rifle and screw up the bolt, screw up the process because staff's application of force state is unstable, rifle and bolt axiality can't be guaranteed, and the uniformity is relatively poor, has the risk of torsion overproof. Second, staff operating time low-usage screws up the rifle and feeds the action and rely on staff manual operation and bent axle belt pulley bolt tightening process and be close 4 seconds, and staff latency is long to exist extravagantly, and staff operating time's low-usage, production efficiency is not high enough. Thirdly, if automated modification is performed by using a servo motor or a robot, the structure is complex and the cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing an axially-telescopic automatic tightening mechanism which can improve the assembly efficiency of an engine, improve the consistency and quality of products, and has small volume and low cost.
In view of the above, the present invention provides an axially retractable automatic tightening mechanism, comprising: the tightening gun assembly is arranged on the sliding table assembly; wherein, the cylinder of the cylinder component is in an extending state when in a non-tightening state; after the engine enters the station and is located, the cylinder begins to retract, the axial telescopic mechanism drives the sliding table assembly to move through elastic compression, when the tightening gun assembly contacts the head of the crankshaft pulley bolt, the cylinder still retracts, and the axial telescopic mechanism can further compress and store energy until the tightening is completed.
The invention has the further improvement that the cylinder assembly also comprises a cylinder mounting plate, and the cylinder is mounted on the upright post through the cylinder mounting plate; the axial telescopic mechanism is arranged on one side of the cylinder.
The cylinder mounting plate is further improved in that a reinforcing rib is arranged below the cylinder mounting plate and fixedly arranged beside the upright post; the bottom plate subassembly includes mounting plate, altitude mixture control spare and backup pad, mounting plate passes through altitude mixture control spare is connected to the backup pad, the stand set up in the backup pad.
The axial telescopic mechanism comprises a guide rod, an elastic assembly and a sliding table connecting assembly, wherein the elastic assembly is arranged in the guide rod, and the sliding table connecting assembly is arranged between the guide rod and the elastic assembly.
The invention is further improved in that the elastic assembly comprises a spiral spring and a spring limiting piece, the spiral spring is sleeved on the guide rod, and the spring limiting piece is arranged at one end of the guide rod, which is far away from the cylinder assembly.
The invention is further improved in that the spring limiting piece is a spring retainer ring.
The invention has the further improvement that the sliding table connecting assembly comprises a sliding table connecting block and a linear bearing, and the sliding table connecting block is connected with the guide rod through the linear bearing.
The invention is further improved in that the sliding table assembly comprises a sliding table, a linear slide rail and a buffering protection assembly, the sliding table is arranged above the cylinder assembly through the linear slide rail, and the buffering protection assembly is arranged on one side of the sliding table.
The invention is further improved in that the buffer protection component comprises a limit screw, a collision block and a buffer, and the collision block is arranged on one side of the buffer close to the limit screw.
The invention further improves the structure that the tightening gun assembly comprises a tightening gun mounting seat, a sleeve and a tightening gun, wherein the tightening gun is vertically arranged on the sleeve and is mounted on the sliding table assembly through the tightening gun mounting seat.
Compared with the prior art, the invention has the beneficial effects that: the support and the positioning are realized through a bottom plate assembly, a cylinder assembly, an axial telescopic mechanism and the like, and a sliding table assembly pushed by a cylinder is added, so that the automatic propulsion of a tightening gun assembly is realized, and the station is transformed into full automation through extremely low cost; and a set of axial telescopic mechanism is additionally arranged between the air cylinder assembly and the sliding table assembly, so that the cap can be recognized by a tightening gun, the tightening gun can be ensured to have stable pressing force on a bolt in the tightening process, the consistency of the tightening process is improved, and the consistency and the stability and the reliability of the tightening gun can be effectively improved on the basis of improving the assembly efficiency of an engine.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic partial cross-sectional view of an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, this example provides an axially retractable automatic tightening mechanism including: the tightening gun assembly comprises a bottom plate assembly, an upright post 3, a cylinder assembly, an axial telescopic mechanism, a sliding table assembly and a tightening gun assembly, wherein the cylinder assembly is arranged above the bottom plate assembly through the upright post 3, the axial telescopic mechanism is arranged on one side of the cylinder assembly, the axial telescopic mechanism is connected with the sliding table assembly, and the tightening gun assembly is arranged on the sliding table assembly; wherein, the cylinder 13 of the cylinder component is in an extending state in a non-tightening state; after the engine gets into the station and falls to the position, cylinder 13 begins to retract, axial telescopic machanism passes through elasticity compression drive the slip table subassembly removes, works as when tightening rifle subassembly contact crankshaft pulley bolt's head, cylinder 13 still continues to retract, axial telescopic machanism can further compress the energy storage, screws up until accomplishing.
As shown in fig. 1, the cylinder assembly of this example further includes a cylinder mounting plate 12, and the cylinder 13 is mounted on the upright 3 through the cylinder mounting plate 12; the axial telescopic mechanism is arranged on one side of the cylinder 13. The axial telescopic mechanism comprises a guide rod 16, an elastic assembly and a sliding table connecting assembly, the elastic assembly is arranged in the guide rod 16, and the sliding table connecting assembly is arranged between the guide rod 16 and the elastic assembly, so that elastic pressure can be kept in the screwing process to compress bolts conveniently, and consistency and stability are ensured; the elastic component comprises a spiral spring 17 and a spring limiting piece 18, the spiral spring 17 is sleeved on the guide rod 16, and the spring limiting piece 18 is arranged at one end, far away from the cylinder component, of the guide rod 16; the spring retainer 18 is preferably a spring collar for achieving the retaining and fixing function of the coil spring 17.
As shown in fig. 1, a reinforcing rib 15 is arranged below the cylinder mounting plate 12 in this embodiment, and the reinforcing rib 15 is fixedly arranged beside the upright post 3, so that stable installation of a cylinder assembly, an axial telescopic mechanism, a sliding table assembly and a tightening gun assembly is facilitated, and a good foundation is provided for subsequent work; the bottom plate assembly comprises an installation bottom plate 1, a height adjusting piece 2 and a supporting plate 14, the installation bottom plate 1 is connected to the supporting plate 14 through the height adjusting piece 2, the upright column 3 is arranged on the supporting plate 14, the height adjusting piece 2 is preferably a screw rod or a screw rod, and height adjustment can be conveniently carried out according to actual requirements.
As shown in fig. 1, the tightening gun assembly of this embodiment includes a tightening gun mounting seat 6, a sleeve 7 and a tightening gun 8, wherein the tightening gun 8 is vertically disposed on the sleeve 7 and is mounted on the sliding table assembly through the tightening gun mounting seat 6.
In the embodiment, the air cylinder 13 is arranged on the upright post 3 through an air cylinder mounting plate 12, and the air cylinder 13 is in an extending state when in a non-tightening state; when the engine enters a station and is located, the air cylinder 13 starts to retract, the spring limiting part 18 at the tail end of the guide rod 16 drives the sliding table 4 to move by compressing the spiral spring 17, when the sleeve 7 on the tightening gun 8 starts to contact the head of the crankshaft pulley bolt, the tightening gun 8 rotates to be capped, the air cylinder 13 still continues to retract at the moment, and the spiral spring 17 further compresses stored energy until the sleeve 7 sleeves the bolt and finishes the forward process of tightening, and the driving force is provided by the rebound stroke of the spiral spring 17. Based on the principle, the pressure of the tightening shaft on the bolt in the tightening process can be ensured to have better stability, so that the tightening quality is improved.
As shown in fig. 2, the sliding table connecting assembly of this example includes a sliding table connecting block 19 and a linear bearing 20, and the sliding table connecting block 19 is connected to the guide rod 16 through the linear bearing 20, so as to transmit the driving force of the rebound stroke of the coil spring 17;
as shown in fig. 1, the sliding table assembly of this embodiment includes a sliding table 4, a linear slide rail 5 and a buffer protection assembly, the sliding table 4 is disposed above the cylinder assembly through the linear slide rail 5, and the buffer protection assembly is disposed on one side of the sliding table 4; buffering protection subassembly includes stop screw 9, hits piece 10 and buffer 11, hit piece 10 set up in buffer 11 is close to one side of stop screw 9 is convenient for realize spacing and buffering crashproof function in the motion of slip table 4, further guarantees the reliability of automatic tightening process.
In conclusion, the automatic screwing gun assembly is supported and positioned through the bottom plate assembly, the air cylinder assembly, the axial telescopic mechanism and the like, meanwhile, the sliding table assembly pushed by the air cylinder 13 is additionally arranged, so that the automatic pushing of the screwing gun assembly is realized, and the station is transformed into full automation through extremely low cost; and, set up a set of axial telescopic machanism between cylinder assembly and slip table subassembly, when guaranteeing to screw up rifle 8 and realize recognizing the cap, also can guarantee to screw up the process and screw up rifle 8 and have stable packing force to the bolt, improve the uniformity of screwing up the process, on the basis of improving engine assembly efficiency, can effectively promote its uniformity and reliable and stable, the structure after this example improvement mainly occupies vertical space, whole mechanism is small, with low costs.
The automatic assembling device can be directly transformed based on the existing engine assembling mechanism, and the full automation of the equipment can be realized only through simple pneumatic elements; in addition, the tightening shaft of the tightening gun assembly does not need to move along the roller way direction, so that the whole tightening mechanism only mainly occupies a vertical space, and the whole mechanism occupies extremely small space in the longitudinal direction and the transverse direction; the automatic tightening mechanism has the advantages that automation is realized, the repeatability and the stability of tightening actions are good, and the problems of torque force out-of-tolerance and the like caused by human factors are effectively solved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (5)
1. An automatic tightening mechanism of axial telescopic, characterized by, includes: the tightening gun assembly is arranged on the sliding table assembly; wherein, the cylinder of the cylinder component is in an extending state when in a non-tightening state; when the engine enters a station and is located, the air cylinder starts to retract, the axial telescopic mechanism drives the sliding table assembly to move through elastic compression, when the tightening gun assembly contacts the head of the crankshaft pulley bolt, the air cylinder still retracts, and the axial telescopic mechanism can further compress and store energy until the tightening is finished; the cylinder assembly further comprises a cylinder mounting plate, and the cylinder is mounted on the upright post through the cylinder mounting plate; the axial telescopic mechanism is arranged on one side of the cylinder; the axial telescopic mechanism comprises a guide rod, an elastic assembly and a sliding table connecting assembly, the elastic assembly is arranged in the guide rod, and the sliding table connecting assembly is arranged between the guide rod and the elastic assembly; the elastic assembly comprises a spiral spring and a spring limiting piece, the spiral spring is sleeved on the guide rod, and the spring limiting piece is arranged at one end of the guide rod, which is far away from the air cylinder assembly; the sliding table connecting assembly comprises a sliding table connecting block and a linear bearing, and the sliding table connecting block is connected with the guide rod through the linear bearing; the sliding table assembly comprises a sliding table, a linear slide rail and a buffering protection assembly, the sliding table is arranged above the air cylinder assembly through the linear slide rail, and the buffering protection assembly is arranged on one side of the sliding table.
2. The automatic axial-telescopic tightening mechanism according to claim 1, wherein a reinforcing rib is arranged below the cylinder mounting plate, and the reinforcing rib is fixedly arranged beside the upright post; the bottom plate subassembly includes mounting plate, altitude mixture control spare and backup pad, mounting plate passes through altitude mixture control spare is connected to the backup pad, the stand set up in the backup pad.
3. The axially retractable automatic tightening mechanism according to claim 1, wherein the spring retainer is a spring collar.
4. The axially retractable automatic tightening mechanism according to claim 1, wherein the bumper guard assembly includes a limit screw, a striker and a bumper, the striker being disposed on a side of the bumper adjacent to the limit screw.
5. The automatic tightening mechanism of any one of claims 1 to 4, wherein the tightening gun assembly comprises a tightening gun mount, a sleeve, and a tightening gun, the tightening gun being vertically disposed on the sleeve and mounted on the slide assembly via the tightening gun mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011335837.3A CN112496728B (en) | 2020-11-25 | 2020-11-25 | Automatic tightening mechanism with axial telescopic function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011335837.3A CN112496728B (en) | 2020-11-25 | 2020-11-25 | Automatic tightening mechanism with axial telescopic function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112496728A CN112496728A (en) | 2021-03-16 |
| CN112496728B true CN112496728B (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011335837.3A Active CN112496728B (en) | 2020-11-25 | 2020-11-25 | Automatic tightening mechanism with axial telescopic function |
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| CN (1) | CN112496728B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006037686B3 (en) * | 2006-08-11 | 2007-11-22 | Bernd-Georg Pietras | Sleeve screwing machine for screwing threaded sleeve on pipe, has sleeve screwing drive, which is connected with two parallel vertical pendulum supports in connection with swinging levers of torsion swing |
| CN103317337A (en) * | 2013-06-06 | 2013-09-25 | 苏州阿斯兰自动化科技有限公司 | Automatic screw locking mechanism |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851027A (en) * | 1981-09-16 | 1983-03-25 | Nitto Seiko Co Ltd | Removal device of fastener part |
| CN102000970B (en) * | 2010-09-10 | 2012-05-23 | 中国科学院合肥物质科学研究院 | Bolt assembly and disassembly manipulator capable of moving with three degrees of freedom |
| CN205363214U (en) * | 2015-12-25 | 2016-07-06 | 昂华（上海）自动化工程股份有限公司 | Automatic device of screwing up of engine flywheel construction bolt |
| CN106853582B (en) * | 2016-12-30 | 2018-10-30 | 博众精工科技股份有限公司 | A kind of bidirectional locking mechanism |
| CN207071790U (en) * | 2017-08-22 | 2018-03-06 | 无锡金百特自动化机械有限公司 | The screwed lock module |
| CN207402414U (en) * | 2017-10-26 | 2018-05-25 | 常州摩通机器人科技有限公司 | A kind of air blowing type locking machine structure and filature |
| CN207746673U (en) * | 2017-12-05 | 2018-08-21 | 深圳市科研欣机电设备有限公司 | A kind of fixed connection apparatus of screw gun |
| CN211053061U (en) * | 2019-10-19 | 2020-07-21 | 神通科技集团股份有限公司 | Movable adjustable screw assembling machine |
-
2020
- 2020-11-25 CN CN202011335837.3A patent/CN112496728B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006037686B3 (en) * | 2006-08-11 | 2007-11-22 | Bernd-Georg Pietras | Sleeve screwing machine for screwing threaded sleeve on pipe, has sleeve screwing drive, which is connected with two parallel vertical pendulum supports in connection with swinging levers of torsion swing |
| CN103317337A (en) * | 2013-06-06 | 2013-09-25 | 苏州阿斯兰自动化科技有限公司 | Automatic screw locking mechanism |
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| Publication number | Publication date |
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| CN112496728A (en) | 2021-03-16 |
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Application publication date: 20210316 Assignee: Guangxi baolingkang Medical Equipment Co.,Ltd. Assignor: SAIC GM WULING AUTOMOBILE Co.,Ltd. Contract record no.: X2023980045816 Denomination of invention: An axial retractable automatic tightening mechanism Granted publication date: 20220114 License type: Common License Record date: 20231107 |