CN114571220A - Screw locking machine - Google Patents
Screw locking machine Download PDFInfo
- Publication number
- CN114571220A CN114571220A CN202011387234.8A CN202011387234A CN114571220A CN 114571220 A CN114571220 A CN 114571220A CN 202011387234 A CN202011387234 A CN 202011387234A CN 114571220 A CN114571220 A CN 114571220A
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- Prior art keywords
- screw
- locking
- sleeve
- batch head
- head
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- Pending
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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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
- 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)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to the technical field of automatic production and processing, and discloses a screw locking machine, which comprises: the lock payment batch head, the sleeve and the sensor; the sleeve is sleeved on the periphery of the lock and payment batch head and can axially slide relative to the lock and payment batch head along the lock and payment batch head; before the screw is locked, the locking screwdriver head moves towards the direction of the screw hole; the sensor is used for detecting the relative displacement between the sleeve and the locking and paying batch head when the locking and paying batch head moves towards the direction of the screw hole; and when the relative displacement is larger than a preset value, the locking and paying batch head locks and pays the screw, otherwise, the locking and paying batch head does not lock and pay the screw. According to the invention, the sensor is additionally arranged in the screw locking machine and used for detecting the relative displacement between the locking screwdriver head and the sleeve, and judging whether the screw is aligned with the screw hole or not according to the displacement, the screw is misaligned and enters the screw hole, and at the moment, the locking screwdriver head does not lock the screw, so that the product is effectively prevented from being damaged by the rotation of the screw outside the screw hole.
Description
Technical Field
The invention relates to the technical field of automatic production and processing, in particular to a screw locking machine capable of automatically locking screws.
Background
In the prior art, in order to improve the production efficiency of products and reduce the production labor cost, screw locking machines for screw locking during product assembly are developed. The existing screw locking machine adopts a jig tool to fix a product to be processed, then drives a locking and locking batch head of the screw locking machine to perform screw locking and locking actions to a fixed coordinate position, completes locking and locking when the locking and locking torque of the locking and locking batch head reaches a set value, and stops rotating the locking and locking batch head after the set time is exceeded if the locking and locking torque value does not reach the set value all the time.
The existing screw machine adopts a jig tool to fix a product to be processed, drives a locking and paying batch head to lock a screw to a fixed coordinate point position, and when a related screw locking and paying mechanism or the jig tool deviates, the locking and paying batch head cannot align to a screw hole on the product, and the screw can be pushed to other parts of the product at the moment. The screw does not enter the screw hole, the locking and paying screwdriver head cannot reach a set torsion value, and the locking and paying screwdriver head can continuously rotate until the set time is up, so that the locking and paying of the screw cannot be completed, and the locking and paying screwdriver head drives the screw to rotate, so that a product is damaged. When the value of the product to be locked is high, a large loss is caused.
Disclosure of Invention
Therefore, a screw locking machine is needed to be provided for solving the technical problem that products are easily damaged when screws are locked without entering screw holes in the prior art.
To achieve the above object, the present invention provides a screw driving machine, including: the lock payment batch head, the sleeve and the sensor;
the sleeve is sleeved on the periphery of the lock and payment batch head and can slide relative to the lock and payment batch head along the axial direction of the lock and payment batch head;
the sensor is used for detecting the relative displacement between the sleeve and the locking and paying batch head when the locking and paying batch head moves towards the direction of the screw hole; and when the relative displacement is larger than a preset value, the locking and paying batch head locks and pays the screw, otherwise, the locking and paying batch head does not lock and pay the screw.
Furthermore, the tail end of the locking batch head is stretched into the sleeve from the top end of the sleeve, the length from the tail end of the locking batch head to the bottom end of the sleeve is b0, the b0 is larger than the height a2 of the screw, and the preset value is larger than or equal to b0-a 2.
Further, the sensor comprises a magnetic grid ruler and a magnetic grid ruler inductor;
the magnetic grid ruler and the magnetic grid ruler sensor are oppositely arranged, the magnetic grid ruler and the sleeve are fixedly arranged, the magnetic grid ruler sensor and the locking and paying batch head are fixedly arranged, or the magnetic grid ruler and the locking and paying batch head are fixedly arranged, and the magnetic grid ruler sensor and the sleeve are fixedly arranged.
Further, the sleeve is connected with a vacuum suction pipe, and the vacuum suction pipe is communicated with the interior of the sleeve to generate negative pressure in the sleeve, so that the screw to be locked is adsorbed.
Furthermore, the lock payment batch head comprises a batch head main shaft and a batch head body, the batch head main shaft is connected with the batch head body, the batch head main shaft is used for driving the batch head body to rotate, and the batch head main shaft comprises a motor or a pneumatic motor.
Further, still include robotic arm, robotic arm includes a plurality of freely movable joints, lock and pay wholely the head set up in robotic arm is last, robotic arm drives lock and pay wholely the head and remove.
Further, the sleeve is arranged on the sliding block, and the sliding block can slide along the axial direction of the lock-payment batch head.
Be different from prior art, above-mentioned technical scheme lock screw machine includes: the lock payment batch head, the sleeve and the sensor; the sleeve is sleeved on the periphery of the lock and payment batch head and can slide relative to the lock and payment batch head along the axial direction of the lock and payment batch head; the sensor is used for detecting the relative displacement between the sleeve and the locking and paying batch head when the locking and paying batch head moves towards the direction of the screw hole; and when the relative displacement is larger than a preset value, the locking and paying batch head locks and pays the screw, otherwise, the locking and paying batch head does not lock and pay the screw. When the relative displacement is smaller than the preset value, the screw is misaligned and enters the screw hole, and the locking and paying screwdriver head does not lock the screw, so that the screw is effectively prevented from rotating outside the screw hole to damage a product.
Drawings
FIG. 1 is a schematic structural diagram of a screw driving machine according to an embodiment;
FIG. 2 is a schematic view of the screw driving machine according to the embodiment, the sliding displacement of the screwdriver bits and the size of the screw;
FIG. 3 is a schematic view of a screw being screwed into a screw hole according to an embodiment of the present invention;
FIG. 4 is a schematic view of another embodiment of a screw and screw hole misalignment;
description of reference numerals:
1. a screw locking machine;
11. locking the batch head;
111. a bit main shaft;
112. a bit body;
12. a sleeve;
13. a sensor;
131. a magnetic scale sensor;
132. a magnetic grid ruler;
14. a vacuum suction pipe;
2. producing a product;
3. a screw;
h0, original position of the magnetic grid ruler;
h1, locking the position of the front magnetic grid ruler;
b0, original distance from the end of the batch head body to the end of the sleeve;
a1, nut height;
a2, screw height;
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 4, the present embodiment provides a screw driving machine. The screw locking machine can be used for locking various screws or bolts such as straight screws, cross screws, hexagonal screws, plum screws and the like, and can avoid product damage caused by locking when the screws are not aligned with screw holes.
As shown in fig. 1, the screw driving machine includes: a locking and paying batch head 11, a sleeve 12 and a sensor 13. The sleeve 12 is sleeved on the periphery of the locking and paying batch head 11, and the sleeve 12 can slide along the axial direction of the locking and paying batch head 11 relative to the locking and paying batch head. The sleeve 12 is used for adsorbing a screw 3 to be locked, and the locking screwdriver head 11 is used for locking the screw. The end of the locking screwdriver bit 11 (i.e. the end of the screwdriver bit body 112) extends into the sleeve 12 from the top end of the sleeve 12, and the end of the locking screwdriver bit 11 is provided with a shape matched with the nut of the screw 3, so that the locking screwdriver bit can be connected with the screw and drive the screw to lock.
For example, when the screw is a straight screw, a straight groove is arranged on the nut of the screw, and a straight connecting structure matched with the straight groove is arranged at the tail end of the locking screwdriver head; when the screw is the cross screw, be provided with the cross recess on the nut of screw, the end of lock pair batch head be provided with the connection structure of cross recess looks adaptation.
The lock batch head 11 comprises a batch head main shaft 111 and a batch head body 112, the batch head main shaft 111 is connected with the batch head body 112, the batch head main shaft 111 is used for driving the batch head body 112 to rotate, the batch head main shaft 111 comprises a motor or a pneumatic motor, and the motor or the pneumatic motor provides rotating power. The end of the rotating shaft of the screwdriver head main shaft 111 is provided with a connecting hole, the top end of the screwdriver head body 112 is detachably connected with the connecting hole through bolts, magnetic force, clamping grooves and the like, and the screwdriver can be used for locking screws of different types or sizes by replacing the screwdriver head body.
In one embodiment, the screw locking machine is provided with a slider, the sleeve 12 is provided on the slider, and the slider can slide along the axial direction of the locking screwdriver head, so that the sleeve can relatively slide along the axial direction of the locking screwdriver head.
As shown in fig. 1, in the present embodiment, the sensor includes a magnetic scale 132 and a magnetic scale sensor 131; the magnetic grid ruler 132 and the magnetic grid ruler inductor 131 are arranged oppositely, the magnetic grid ruler 132 and the sleeve are fixedly arranged, the magnetic grid ruler inductor and the locking and paying batch head are fixedly arranged, or the magnetic grid ruler and the locking and paying batch head are fixedly arranged, and the magnetic grid ruler inductor and the sleeve are fixedly arranged. When the sleeve slides relative to the locking screwdriver head, the magnetic grid ruler sensor and the magnetic grid ruler synchronously slide relative to each other, and the displacement of the relative sliding is converted into corresponding pulse wave number to be output, so that the controller of the screw locking machine such as a PLC or a single chip microcomputer can obtain the relative sliding displacement of the sleeve relative to the locking screwdriver head according to the pulse wave number. The magnetic grid ruler sensor has the advantages of high precision, strong anti-interference performance and the like, wherein the displacement precision can reach 0.01 MM.
In other embodiments, other sensors may be used to detect the relative displacement of the sleeve 12 and the locking batch head 11. For example, the sensor may employ a photoelectric sensor and a grating ruler, wherein the grating ruler is fixedly disposed with the sleeve, the photoelectric sensor is fixedly disposed with the lock-payment batch head, or the grating ruler is fixedly disposed with the lock-payment batch head, and the photoelectric sensor is fixedly disposed with the sleeve. The relative sliding displacement of the sleeve and the locking batch head can be detected according to the output pulse number of the electro-optical sensor.
The sleeve 12 is provided with an adsorption component, so that the sleeve can adsorb the screw in the sleeve. As shown in fig. 1, in the present embodiment, the suction unit includes a vacuum suction pipe 14, one end of the vacuum suction pipe 14 communicates with the inside of the sleeve 12, and the other end of the vacuum suction pipe 14 is connected to a vacuum pumping device such as a vacuum pump or a vacuum bottle, so that a negative pressure suction screw is formed in the sleeve 12. In other embodiments, the suction assembly may be an electromagnetic suction device including an electromagnetic coil, the electromagnetic coil may be disposed on the periphery of the middle lower portion of the sleeve, and the electromagnetic coil is connected to a power source, and when the electromagnetic coil is powered on, a magnetic force is generated, so that the screw is sucked into the sleeve.
The lock is paid wholely head 11 and can set up on mechanical structure, and mechanical structure can drive the lock and pay wholely head and sleeve removal, and when carrying out the screw lock and pay, mechanical structure drives the lock and pays wholely head and sleeve and remove to the screw and place the position, then adsorbs the screw through the sleeve, makes the lock pay the terminal of wholely head and the nut connection of screw. Then the mechanical structure drives the lock head to move to the position of the screw hole, and drives the lock head, the sleeve and the screw to approach the screw hole along the depth direction of the screw hole (vertically downward as shown in fig. 1), and then the lock head drives the screw to rotate to screw the screw into the screw hole.
Before the screw is rotationally locked, the locking and fixing head 11 moves towards the direction of the screw hole; the sensor 13 is used for detecting the relative displacement between the sleeve 12 and the locking and paying batch head 11 when the locking and paying batch head moves towards the direction of the screw hole; when the relative displacement is larger than the preset value, the tail end of the screw enters the screw hole, and at the moment, the locking and paying batch head drives the screw to rotate to lock the screw, so that the screw is locked in the screw hole. If the relative displacement is smaller than the preset value, the screw is not aligned with the screw hole, the tail end of the screw does not enter the screw (as shown in fig. 4), and the locking screwdriver is not controlled to rotate the locking screw, so that the product is prevented from being damaged by the rotation of the locking screwdriver outside the screw hole.
As shown in fig. 1 and 2, the height b0 from the tail end of the lock batch head to the suction nozzle sleeve needs to be greater than the overall height a2 of the screw, and as shown in fig. 3, when the difference between the current position h1 of the sleeve and the original position h0 detected by the sensor is greater than the difference between b0 (wherein b0 is the relative displacement between the sleeve and the lock batch head when the lock batch head moves towards the screw hole) and a2, it indicates that the screw has partially entered the screw hole, and the lock batch head can be started to rotate to start locking. When the difference between the current position h1 and the original position h0 of the magnetic scale is less than or equal to the difference between b0 and a2, as shown in fig. 4, it indicates that the screw does not normally enter the screw hole, and the locking device cannot be activated. The situation that the automatic screw machine damages the product is avoided through the method.
In some embodiments, drive the mechanical structure of lock batch head in the removal is robotic arm, robotic arm includes a plurality of freely movable joints, can set up driving motor between two adjacent freely movable joints, makes the contained angle between two adjacent freely movable joints adjustable, lock batch head set up in robotic arm's end (being last section freely movable joint's end), consequently robotic arm can drive lock batch head removes along different directions in the cubical space to can lock the screw hole of distributing in different space dimensions.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (7)
1. A screw locking machine, comprising: the lock payment batch head, the sleeve and the sensor;
the sleeve is sleeved on the periphery of the lock and payment batch head and can slide relative to the lock and payment batch head along the axial direction of the lock and payment batch head;
the sensor is used for detecting the relative displacement between the sleeve and the locking and paying batch head when the locking and paying batch head moves towards the direction of the screw hole; and when the relative displacement is larger than a preset value, the locking and paying batch head locks and pays the screw, otherwise, the locking and paying batch head does not lock and pay the screw.
2. The screw locking machine of claim 1, wherein the end of the locking batch head extends from the top end of the sleeve into the sleeve, the length from the end of the locking batch head to the bottom end of the sleeve is b0, the b0 is greater than the height a2 of the screw, and the preset value is greater than or equal to b0-a 2.
3. The screw locking machine of claim 1, wherein the sensor comprises a magnetic scale and a magnetic scale sensor;
the magnetic grid ruler and the magnetic grid ruler sensor are oppositely arranged, the magnetic grid ruler and the sleeve are fixedly arranged, the magnetic grid ruler sensor and the locking and paying batch head are fixedly arranged, or the magnetic grid ruler and the locking and paying batch head are fixedly arranged, and the magnetic grid ruler sensor and the sleeve are fixedly arranged.
4. The screw locking machine according to claim 1, wherein a vacuum suction tube is connected to the sleeve, and the vacuum suction tube is communicated with the interior of the sleeve to generate negative pressure in the sleeve, so as to adsorb a screw to be locked.
5. The screw locking machine according to claim 1, wherein the locking screwdriver head comprises a screwdriver head spindle and a screwdriver head body, the screwdriver head spindle is connected with the screwdriver head body and is used for driving the screwdriver head body to rotate, and the screwdriver head spindle comprises an electric motor or a pneumatic motor.
6. The screw locking machine of claim 1, further comprising a mechanical arm, wherein the mechanical arm comprises a plurality of movable joints, the locking and paying batch head is arranged on the mechanical arm, and the mechanical arm drives the locking and paying batch head to move.
7. The screw locking machine of claim 1, wherein the sleeve is disposed on a slider, and the slider is slidable along an axial direction of the lock-delivery batch head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387234.8A CN114571220A (en) | 2020-12-01 | 2020-12-01 | Screw locking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387234.8A CN114571220A (en) | 2020-12-01 | 2020-12-01 | Screw locking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114571220A true CN114571220A (en) | 2022-06-03 |
Family
ID=81766835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011387234.8A Pending CN114571220A (en) | 2020-12-01 | 2020-12-01 | Screw locking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114571220A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000094241A (en) * | 1998-09-21 | 2000-04-04 | Mitsubishi Electric Engineering Co Ltd | Inspection device for thread fastening dimension |
| JP2010000573A (en) * | 2008-06-20 | 2010-01-07 | Aisin Aw Co Ltd | Bolt tightening determination apparatus |
| JP2010214564A (en) * | 2009-03-18 | 2010-09-30 | Katsuyuki Totsu | Screw fastening device |
| US20110245052A1 (en) * | 2008-12-16 | 2011-10-06 | Honda Motor Co., Ltd. | Fastening device, method of loading fastening member, and device for loading fastening member |
| JP2012143842A (en) * | 2011-01-13 | 2012-08-02 | Sharp Corp | Locating device, automatic assembling device, locating method, and program |
| CN102909548A (en) * | 2012-10-13 | 2013-02-06 | 桂林电子科技大学 | Automatic screw locking method and device |
| CN203343723U (en) * | 2013-07-17 | 2013-12-18 | 东莞市贝迪自动化科技有限公司 | Full-automatic screw locking machine capable of detecting screw lock-in depth |
| CN106312532A (en) * | 2016-10-19 | 2017-01-11 | 中山市合赢智能装备有限公司 | Method for locking screw automatically |
| US20170080535A1 (en) * | 2015-09-21 | 2017-03-23 | HONGFUJIN PRECISION ELECTRONICS (CHENGDU) Co., Ltd . | Screw driving apparatus and screw feeding assembly thereof |
| CN108356509A (en) * | 2018-04-18 | 2018-08-03 | 锦州东佑精工有限公司 | Automatic nail beating device and its nailing method |
| CN208614187U (en) * | 2018-06-27 | 2019-03-19 | 滁州安飞信电子科技有限公司 | A kind of screw fixing machine for antenna for base station |
| CN110091162A (en) * | 2019-05-17 | 2019-08-06 | 格力电器（武汉）有限公司 | Beat screw system |
| CN110315328A (en) * | 2019-06-25 | 2019-10-11 | 深圳市宏锦电子有限公司 | It is a kind of to lock pair device automatically and lock Fu Fangfa automatically |
-
2020
- 2020-12-01 CN CN202011387234.8A patent/CN114571220A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000094241A (en) * | 1998-09-21 | 2000-04-04 | Mitsubishi Electric Engineering Co Ltd | Inspection device for thread fastening dimension |
| JP2010000573A (en) * | 2008-06-20 | 2010-01-07 | Aisin Aw Co Ltd | Bolt tightening determination apparatus |
| US20110245052A1 (en) * | 2008-12-16 | 2011-10-06 | Honda Motor Co., Ltd. | Fastening device, method of loading fastening member, and device for loading fastening member |
| JP2010214564A (en) * | 2009-03-18 | 2010-09-30 | Katsuyuki Totsu | Screw fastening device |
| JP2012143842A (en) * | 2011-01-13 | 2012-08-02 | Sharp Corp | Locating device, automatic assembling device, locating method, and program |
| CN102909548A (en) * | 2012-10-13 | 2013-02-06 | 桂林电子科技大学 | Automatic screw locking method and device |
| CN203343723U (en) * | 2013-07-17 | 2013-12-18 | 东莞市贝迪自动化科技有限公司 | Full-automatic screw locking machine capable of detecting screw lock-in depth |
| US20170080535A1 (en) * | 2015-09-21 | 2017-03-23 | HONGFUJIN PRECISION ELECTRONICS (CHENGDU) Co., Ltd . | Screw driving apparatus and screw feeding assembly thereof |
| CN106312532A (en) * | 2016-10-19 | 2017-01-11 | 中山市合赢智能装备有限公司 | Method for locking screw automatically |
| CN108356509A (en) * | 2018-04-18 | 2018-08-03 | 锦州东佑精工有限公司 | Automatic nail beating device and its nailing method |
| CN208614187U (en) * | 2018-06-27 | 2019-03-19 | 滁州安飞信电子科技有限公司 | A kind of screw fixing machine for antenna for base station |
| CN110091162A (en) * | 2019-05-17 | 2019-08-06 | 格力电器（武汉）有限公司 | Beat screw system |
| CN110315328A (en) * | 2019-06-25 | 2019-10-11 | 深圳市宏锦电子有限公司 | It is a kind of to lock pair device automatically and lock Fu Fangfa automatically |
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