CN108356509B - Automatic nailing device and nailing method thereof - Google Patents
Automatic nailing device and nailing method thereof Download PDFInfo
- Publication number
- CN108356509B CN108356509B CN201810348536.0A CN201810348536A CN108356509B CN 108356509 B CN108356509 B CN 108356509B CN 201810348536 A CN201810348536 A CN 201810348536A CN 108356509 B CN108356509 B CN 108356509B
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- nailing
- wrench
- support plate
- extension rod
- plc
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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
- B23P19/069—Multi-spindle machines
Abstract
The utility model provides an automatic nailing device's nailing method, adopts automatic nailing device to implement, automatic nailing device includes the mount, locates nailing spanner support frame, nailing spanner, drive nailing spanner support frame up-and-down reciprocating motion's elevating system, locates the product delivery track that waits to nailing of mount bottom, nailing spanner's quantity is a plurality of, and the lower extreme of every nailing spanner is fixed with and criticizes first sleeve, criticizes first sleeve and is equipped with bottom open-ended cavity, and inserts the extension rod by bottom opening, wears to be equipped with the locating pin on the extension rod, criticizes first telescopic cavity lateral wall and has seted up vertical slot hole corresponding the position at locating pin both ends, is equipped with compression spring between extension rod top surface and criticizing first telescopic cavity bottom surface, and the extension rod bottom is fixed with the screwdriver and criticizes the head. The screw tightening device is reasonable in structural design and reliable in use, solves the problems that the existing screw tightening device is easy to screw out of place and insufficient in tightening force, can realize simultaneous tightening of a plurality of screws, is uniformly controlled, and is high in production efficiency.
Description
Technical Field
The invention relates to a screw fastening technology, in particular to an automatic nailing device and a nailing method thereof.
Background
The existing nailing device is to screw a screw by using a nailing wrench, and the torque value and the screwing direction are preset according to the built-in chip of the wrench. In the actual use process, before nailing, the screwdriver bit fixed at the lower part of the nailing wrench is aligned with the groove on the top surface of the screw to be screwed through manual operation, and then nailing is carried out after alignment, so that the working efficiency is influenced in the alignment process, and especially when a plurality of nails are required to be driven, the first nail alignment, nailing and the second nail alignment and nailing … are carried out. The labor intensity of operators is high, and the production efficiency is low.
Disclosure of Invention
The invention aims to provide an automatic nailing device with high automation program and capable of greatly improving production efficiency and a nailing method thereof.
The technical scheme of the invention is as follows:
the utility model provides an automatic nailing device, includes the mount, locates nailing spanner support frame, nailing spanner on mount upper portion, drive nailing spanner support frame up-and-down reciprocating motion's elevating system, locates the product conveying track of waiting of nailing of mount bottom, its characterized in that: the nail gun comprises a nail gun body, wherein one or more nail gun bodies are arranged at the bottom of the nail gun body, a head sleeve is fixed at the lower end of each nail gun body, a cavity with an opening at the bottom is arranged in the head sleeve, an extension rod is inserted into the cavity through the opening at the bottom, a locating pin is arranged at the upper end of the extension rod, longitudinal long holes are formed in the positions, corresponding to the two ends of the locating pin, of the side walls of the cavity of the head sleeve, a compression spring is arranged between the top surface of the extension rod and the bottom surface of the cavity of the head sleeve, and a screwdriver head is fixed at the bottom of the extension rod.
The automatic nailing device comprises a fixing frame, wherein a centralized mounting box for collecting control chips of all nailing wrenches is additionally arranged on the fixing frame, all the control chips in the centralized mounting box are connected with a PLC (programmable logic controller) through control switching boxes corresponding to all the nailing wrenches, a signal input end of the PLC is additionally connected with a sensor I for detecting whether a product to be nailed is in place or not and a sensor II for detecting the stroke of a lifting mechanism, and a signal output end of the PLC is connected with the lifting mechanism and is connected with an alarm.
The automatic nailing device comprises an upper fixing plate, a lower fixing plate and guide shafts connected between four corners of the upper fixing plate and the lower fixing plate, wherein the nailing wrench support frame comprises an upper support plate, a lower support plate, a plurality of support columns connected between the upper support plate and the lower support plate, linear bearings respectively arranged at the four corners of the upper support plate and the lower support plate, a slideway arranged at the bottom surface of the lower support plate, and nailing wrench fixing plates capable of sliding along the slideway and positioned by using spring thimbles, the linear bearings at the four corners of the upper support plate and the lower support plate are respectively sleeved on the four guide shafts of the fixing frame correspondingly, the upper support plate and the lower support plate are respectively U-shaped, and the nailing wrench fixing plates slide into the U-shaped inner areas of the lower support plate along the slideway.
According to the automatic nailing device, the lifting mechanism adopts the two symmetrically arranged lifting cylinders which are reversely arranged on the upper fixing plate, and the cylinder rods of the lifting cylinders penetrate through the upper fixing plate to be connected and fixed with the upper supporting plate.
According to the automatic nailing device, the outer hexagonal limiting rod matched with the central hole at the lower end of the nailing wrench and the open limiting ring concentric with the outer hexagonal limiting rod and matched with the outer peripheral surface at the lower end of the nailing wrench are arranged in the center of the top surface of the head-batch sleeve, so that double limiting is realized, and the unstable factors caused by the addition of the extension rod are overcome.
According to the automatic nailing device, the through hole corresponding to the locating pin and the threaded hole perpendicular to the through hole and communicated with the through hole are formed in the upper end of the extension rod, and the screw used for propping the locating pin is arranged in the threaded hole so as to prevent the locating pin from being separated from the extension rod.
In the automatic nailing device, the screw mounting holes are formed in the positions, corresponding to the threaded holes of the extension rods, of the head sleeve, so that screws can be screwed on the extension rods through the screw mounting holes.
According to the automatic nailing device, the sliding trolley and the lifting mechanism arranged below the sliding trolley are arranged on the product conveying rail to be nailed, so that when a product reaches a nailing station, the sliding trolley is supported by the lifting mechanism, and the sliding trolley is matched with the nailing operation.
The nailing method of the automatic nailing device is characterized by comprising the following steps:
1) The sensor I is used for identifying whether a product to be nailed reaches a designated position, and after the product reaches the designated position, the PLC outputs a signal to the lifting mechanism, and the lifting mechanism drives the nailing wrench support frame to descend;
2) After the lifting mechanism descends to the stroke lower limit position, the PLC receives a feedback signal of the sensor II and controls the corresponding nailing wrenches to reverse through the control switching boxes corresponding to the nailing wrenches, and the top ends of the screwdriver bits and the top surface grooves of the screws to be screwed down are aligned in the reverse rotation process, so that the top ends of the screwdriver bits completely fall into the top surface grooves of the screws to be screwed down;
3) When the reverse rotation time reaches the set time, the PLC programmable controller sends a control instruction to enable the nailing wrench to stop reversing and start forward rotation, and in the forward rotation process of the nailing wrench, the screwdriver bit simultaneously generates circumferential and longitudinal displacement under the action of the compression spring, so that a screw to be screwed is driven to fasten a product, when the torque force reaches the set value, the firing pin pops up, the sensor obtains a signal, and after receiving the signal, the PLC programmable controller sends a stop instruction to reset all parts, the product passes, and the screwing action is completed.
In the nailing method, in the step 3), when the screwdriver bit does not reach the set torque within the set time two after the nailing wrench starts to rotate positively, the PLC outputs a control signal to enable all components to stop acting and alarm through the alarm, and an operator manually processes defective products and presses a mechanism reset button connected with the PLC to enable the mechanism to return to normal.
In the nailing method, the first setting time and the second setting time are 0.5-1 s.
The beneficial effects of the invention are as follows:
1. because the unique assembly structure of the screwdriver head sleeve, the extension rod and the screwdriver head is redesigned, and the method of reversing and aligning the nailing wrench is matched, before forward rotation, the screwdriver head is completely aligned with the groove on the top surface of the screw to be screwed, the screwing process is started immediately after forward rotation, the situation of out-of-place screwing cannot be caused, the structure design is reasonable, the problem that the fastening force is insufficient due to the fact that the existing screw fastening device is easy to screw out in place is fundamentally solved, the screwing effect is guaranteed, and the product quality is improved.
2. The control chip of each nailing spanner is installed in a concentrated mode, and each control chip is connected with the PLC through the control switching box corresponding to each nailing spanner, so that a plurality of screws can be screwed down simultaneously, uniform control is achieved, and production efficiency is remarkably improved.
3. Simple structure, low manufacturing cost and high cost performance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the assembled structure of the screwdriver bit sleeve, extension rod and screwdriver bit of the present invention;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a perspective view of the assembled structure of the screwdriver bit sleeve, extension rod and screwdriver bit of the present invention;
fig. 6 is a schematic diagram of the operation of the present invention.
In the figure: 1. control adapter box, 2. Centralized mounting box, 3. Lifting cylinder, 4. Upper fixing plate, 5. Upper supporting plate, 6. Linear bearing, 7. Supporting column, 8. Lower supporting plate, 9. Guide shaft, 10. Head sleeve, 11. Extension rod, 12. Screwdriver head, 13. Product to be nailed, 14. Sliding trolley, 15. Product conveying track to be nailed, 16. Nailing spanner fixing plate, 17. Slideway, 18. Spring thimble, 19. Nailing spanner, 20. Sensor II, 21. Compression spring, 22. Locating pin, 23. Screw mounting hole, 24. Screw hole, 25. Longitudinal long hole, 26. External six limiting rod, 27. Open limiting ring, 28. Screw, 29. Lower fixing plate.
Detailed Description
As shown in fig. 1 to 6, the automatic nailing device comprises a fixing frame, a nailing wrench support frame arranged on the upper portion of the fixing frame, a nailing wrench 19, a lifting mechanism for driving the nailing wrench support frame to reciprocate up and down, and a product conveying rail 15 to be nailed arranged on the bottom of the fixing frame. The number of the nailing wrenches 19 is a plurality of, the lower extreme of every nailing wrench 19 is fixed with and criticizes first sleeve 10, be equipped with bottom open-ended cavity in criticizing first sleeve 10, and insert extension rod 11 by bottom open-ended, the locating pin 22 is worn to be equipped with by extension rod 11 upper end, the position that the cavity lateral wall of criticizing first sleeve 10 corresponds the locating pin 22 both ends has been seted up longitudinal slot 25, be equipped with compression spring 21 between the cavity bottom surface of extension rod 11 top surface and criticizing first sleeve 10, the extension rod 11 bottom is fixed with screwdriver and criticizes first 12. The center of the top surface of the screwdriver head sleeve 10 is provided with an outer hexagonal limiting rod 26 matched with a central hole at the lower end of the nailing wrench 19 and an open limiting ring 27 concentric with the outer hexagonal limiting rod 26 and matched with the outer peripheral surface at the lower end of the nailing wrench 19, so that double limiting is realized, and the unstable factors caused by adding the extension rod 11 are overcome. The upper end of the extension rod 11 is provided with a through hole corresponding to the positioning pin 22 and a threaded hole 24 which is vertical to and communicated with the through hole, and a screw for propping the positioning pin is arranged in the threaded hole 24 so as to prevent the positioning pin 22 from escaping from the extension rod 11. The screwdriver sleeve 10 is provided with screw mounting holes 23 at positions corresponding to the screw holes 24 of the extension rod 11, so that screws 28 are screwed on the extension rod 11 through the holes. The fixing frame is additionally provided with a centralized mounting box 2 integrating control chips of all nailing wrenches 19, each control chip in the centralized mounting box 2 is connected with a programmable logic controller (omitted in fig. 1) through a control switching box 1 corresponding to each nailing wrench 19, a signal input end of the programmable logic controller is additionally connected with a sensor I for detecting whether a product 13 to be nailed is in place or not and a sensor II 20 for detecting the stroke of a lifting mechanism, the sensor I adopts a photoelectric sensor and is arranged at a position corresponding to the product 13 to be nailed, the sensor II 20 adopts a magnetic switch and is arranged at a lower limit position corresponding to the stroke of the lifting mechanism, and a signal output end of the programmable logic controller is connected with the lifting mechanism and is connected with an alarm.
In this embodiment, the fixing frame is composed of an upper fixing plate 4, a lower fixing plate 29, and guide shafts 9 connected between four corners of the upper fixing plate 4 and the lower fixing plate 29, the nailing wrench supporting frame is composed of an upper supporting plate 5, a lower supporting plate 8, a plurality of supporting columns 7 connected between the upper supporting plate 5 and the lower supporting plate 8, linear bearings 6 respectively arranged at four corners of the upper supporting plate 5 and the lower supporting plate 8, a slideway 17 arranged at the bottom surface of the lower supporting plate 8, and nailing wrench fixing plates 16 capable of sliding along the slideway 17 and being positioned by using spring thimbles 18, the linear bearings 6 at four corners of the upper supporting plate 5 and the lower supporting plate 8 are respectively sleeved on the four guide shafts 9 of the fixing frame, the upper supporting plate 5 and the lower supporting plate 8 are respectively U-shaped, and the nailing wrench fixing plates 16 slide into the U-shaped inner region of the lower supporting plate 8 along the slideway 17. The lifting mechanism adopts two symmetrically arranged lifting cylinders 3 which are reversely arranged on an upper fixing plate 4, and cylinder rods of the lifting cylinders 3 penetrate through the upper fixing plate 4 to be fixedly connected with an upper supporting plate 5. The sliding trolley 14 and the jacking mechanism arranged below the sliding trolley 14 are arranged on the product conveying rail 15 to be nailed, so that when the product reaches the nailing station, the jacking mechanism supports the sliding trolley 14 and cooperates with the needle screwing operation.
A nailing method comprising the steps of:
1. whether the product 13 to be nailed reaches a designated position is identified through the sensor I, and after the product reaches the designated position, the PLC receives a feedback signal of the sensor I and outputs the signal to the lifting mechanism, and the lifting mechanism drives the nailing wrench supporting frame to descend.
2. After the lifting mechanism descends to the stroke lower limit position, the PLC receives the feedback signal of the sensor II 20 and outputs a start signal and a Rev signal to the control transfer box 1 corresponding to each nailing wrench, the corresponding nailing wrench 19 is controlled to reverse through the control transfer box 1, and the top end of the screwdriver bit 12 is aligned with the top surface groove of the screw to be screwed in the reverse rotation process, so that the top end of the screwdriver bit 12 completely falls into the top surface groove of the screw to be screwed in.
3. When the reverse rotation time reaches the set time, the control command is sent by the PLC to enable the nailing wrench 19 to Stop reversing and output a Stop signal, the nailing wrench 19 starts to rotate forward, the screwdriver bit 12 is simultaneously displaced in the circumferential direction and the longitudinal direction under the action of the compression spring 21 in the forward rotation process of the nailing wrench 19, so that a screw fastening product to be screwed is driven, when the torque reaches the set value, the Stop signal is output by the control switching box 1 of the nailing wrench 19, and after the control command is received by the PLC, all components are commanded to reset, the product passes, and the screwing action is completed. When the screwdriver bit 12 does not reach the set torque within the set time two after the nailing wrench 19 starts to rotate forward, the set time two is 1s in this example, the PLC outputs a control signal to stop all the components and alarm through the buzzer, and an operator manually processes defective products and presses a mechanism reset button connected with the PLC, so that the mechanism returns to normal.
Claims (3)
1. The automatic nailing device comprises a fixing frame, a nailing wrench supporting frame, a nailing wrench, a lifting mechanism, a to-be-nailed product conveying track and a centralized mounting box, wherein the nailing wrench supporting frame is arranged at the upper part of the fixing frame, the lifting mechanism is used for driving the nailing wrench supporting frame to reciprocate up and down, the to-be-nailed product conveying track is arranged at the bottom of the fixing frame, a plurality of nailing wrenches are arranged, a batch head sleeve is fixedly arranged at the lower end of each nailing wrench, a cavity with an opening at the bottom is arranged in the batch head sleeve, an extension rod is inserted into the bottom opening, a positioning pin is penetrated at the upper end of the extension rod, a compression spring is arranged between the top surface of the extension rod and the bottom surface of the cavity of the batch head sleeve, a screwdriver head is fixedly arranged at the bottom of the extension rod, the centralized mounting box is additionally provided with a centralized mounting box integrating control chips of each nailing wrench, each control chip in the centralized mounting box is connected with a programmable controller through a control transfer box corresponding to each nailing wrench, and a signal input end of the programmable controller is connected with a to-be-nailed product detector, a stroke sensor I is connected with a programmable controller, and a stroke sensor I is connected with the PLC;
the fixing frame consists of an upper fixing plate, a lower fixing plate and guide shafts connected between four corners of the upper fixing plate and the lower fixing plate, the nailing wrench support frame consists of an upper support plate, a lower support plate, a plurality of support columns connected between the upper support plate and the lower support plate, linear bearings respectively arranged at the four corners of the upper support plate and the lower support plate, a slideway arranged at the bottom surface of the lower support plate, and nailing wrench fixing plates capable of sliding along the slideway and positioned by using spring thimbles, the linear bearings at the four corners of the upper support plate and the lower support plate are respectively sleeved on the four guide shafts of the fixing frame correspondingly, the upper support plate and the lower support plate are respectively U-shaped, and the nailing wrench fixing plates slide into the U-shaped inner region of the lower support plate along the slideway; the lifting mechanism adopts two symmetrically arranged lifting cylinders which are reversely arranged on the upper fixing plate, and cylinder rods of the lifting cylinders penetrate through the upper fixing plate to be fixedly connected with the upper supporting plate; the center of the top surface of the screwdriver head sleeve is provided with an outer hexagonal limiting rod matched with a central hole at the lower end of the nailing wrench and an open limiting ring which is concentric with the outer hexagonal limiting rod and matched with the peripheral surface at the lower end of the nailing wrench; the upper end of the extension rod is provided with a through hole corresponding to the positioning pin and a threaded hole which is vertical to and communicated with the through hole, and a screw for propping up the positioning pin is arranged in the threaded hole; screw mounting holes are formed in the positions, corresponding to the threaded holes of the extension rods, of the screwdriver sleeve; the sliding trolley and the jacking mechanism below the sliding trolley are arranged on the conveying track of the product to be nailed; the method is characterized by comprising the following steps of:
1) The sensor I is used for identifying whether a product to be nailed reaches a designated position, and after the product reaches the designated position, the PLC outputs a signal to the lifting mechanism, and the lifting mechanism drives the nailing wrench support frame to descend;
2) After the descending travel of the lifting mechanism is limited, the PLC receives feedback signals of the sensor II and controls corresponding nailing wrenches to reverse through control switching boxes corresponding to the nailing wrenches, and the top end of the screwdriver bit is aligned with the top surface groove of the screw to be screwed in the reverse rotation process, so that the top end of the screwdriver bit completely falls into the top surface groove of the screw to be screwed in;
3) When the reverse rotation time reaches the set time, the PLC programmable controller sends a control instruction to enable the nailing wrench to stop reverse rotation and start forward rotation, and in the forward rotation process of the nailing wrench, the screwdriver bit simultaneously generates circumferential and longitudinal displacement under the action of the compression spring, so that a screw to be screwed down is driven to fasten a product, when the torque force reaches the set value, the control switching box of the nailing wrench outputs a stop signal, and after receiving the signal, the PLC programmable controller sends an instruction to reset all components, the product passes through, and the screwing down action is completed.
2. The nailing method of an automatic nailing device of claim 1 wherein: in the step 3), when the screwdriver head does not reach the set torque within the set time II after the nailing wrench rotates positively, the PLC outputs a control signal to stop all the components and alarm through the alarm, and an operator manually processes defective products and presses a mechanism reset button connected with the PLC to restore the mechanism to be normal.
3. The nailing method of an automatic nailing device of claim 1 wherein: the first setting time and the second setting time are 0.5-1 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810348536.0A CN108356509B (en) | 2018-04-18 | 2018-04-18 | Automatic nailing device and nailing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810348536.0A CN108356509B (en) | 2018-04-18 | 2018-04-18 | Automatic nailing device and nailing method thereof |
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| Publication Number | Publication Date |
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| CN108356509A CN108356509A (en) | 2018-08-03 |
| CN108356509B true CN108356509B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810348536.0A Active CN108356509B (en) | 2018-04-18 | 2018-04-18 | Automatic nailing device and nailing method thereof |
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| CN (1) | CN108356509B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857370A (en) * | 2018-09-10 | 2018-11-23 | 苏州华维乐自动化科技有限公司 | A kind of simple platform machine four-head synchronization the screwed lock equipment |
| CN109093372A (en) * | 2018-11-02 | 2018-12-28 | 珠海格力智能装备有限公司 | Assembly equipment |
| CN109531119B (en) * | 2018-11-30 | 2020-09-25 | 中国地质大学（武汉） | Tool equipment and method for adjusting bolt of microwave cavity filter |
| CN109570987A (en) * | 2018-12-27 | 2019-04-05 | Tcl王牌电器(惠州)有限公司 | Take lock screw device and Full-automatic screw locking machine |
| CN110000554B (en) * | 2019-05-15 | 2020-11-03 | 长春合心机械制造有限公司 | Automatic screw twisting equipment |
| CN111660277B (en) * | 2020-06-28 | 2023-02-10 | 中铁九局集团电务工程有限公司 | Bolt mounting arm |
| CN114571220A (en) * | 2020-12-01 | 2022-06-03 | 福建星网元智科技有限公司 | Screw locking machine |
| CN114986139A (en) * | 2022-06-01 | 2022-09-02 | 北京航天控制仪器研究所 | Precise synchronous automatic tightening device and method |
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| WO2008087719A1 (en) * | 2007-01-17 | 2008-07-24 | Fujitsu Limited | Screw tightening device and method of controlling screw tightening |
| DE102012004358A1 (en) * | 2012-03-07 | 2013-09-12 | Robert Bosch Gmbh | Screwing system for screwing e.g. automatic assembly device, has driven shaft movable opposite to drive shaft in opposing directions, and comprising retainer to receive tool, and drive device moving driven shaft in one of directions |
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| CN201659529U (en) * | 2010-03-29 | 2010-12-01 | 北京远东罗斯蒙特仪表有限公司 | Intelligent automatic screw tightening device |
| CN102990348A (en) * | 2011-09-16 | 2013-03-27 | 湖北三环汽车电器有限公司 | Automatic tightening machine for nut for car horn bracket |
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| CN108356509A (en) | 2018-08-03 |
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