CN107618000B - Criticizing head device and screwdriver - Google Patents
Criticizing head device and screwdriver Download PDFInfo
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- CN107618000B CN107618000B CN201710869020.6A CN201710869020A CN107618000B CN 107618000 B CN107618000 B CN 107618000B CN 201710869020 A CN201710869020 A CN 201710869020A CN 107618000 B CN107618000 B CN 107618000B
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- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 48
- 238000003825 pressing Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 12
- 230000006698 induction Effects 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 230000008878 coupling Effects 0.000 description 19
- 238000010168 coupling process Methods 0.000 description 19
- 238000005859 coupling reaction Methods 0.000 description 19
- 238000007790 scraping Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a head-batching device, which comprises a fixed seat, a suction nozzle, a head-batching mechanism and a buffer mechanism, wherein the buffer mechanism comprises a head-batching sleeve and a first elastic piece, the fixed seat, the head-batching sleeve and the suction nozzle are mutually matched to form an installation cavity, the head-batching mechanism and the first elastic piece are installed in the installation cavity, the upper part of the head-batching sleeve is abutted with the first elastic piece, and the lower part of the head-batching sleeve is connected with the suction nozzle; the suction nozzle and the buffer mechanism can move up and down relative to the head-batching mechanism so that the lower end of the head-batching mechanism is exposed or hidden in the mounting cavity. The invention also provides a screw driver, which comprises the driver head device. According to the screwdriver head device and the screwdriver, in the process of locking the screw, the impact force of the product to be locked when the screw just contacts the product to be locked is effectively reduced, the damage of the screw to the product to be locked is reduced, and the yield of the screw locking is improved.
Description
Technical Field
The invention relates to the technology of screw locking equipment, in particular to a screwdriver head device and a screwdriver.
Background
At present, the production process of products in the industries of electronic assembly, hardware fittings, automobiles and the like comprises a screw locking process, and the screw locking process is performed by adopting pure manual operation conventionally. The electric screw driver is one of the main components of an automatic screw locking machine and is a tool for screwing screws.
However, the existing head-driving device of the electric screw driver has the following defects:
in the screw locking process, when the screw cylinder cover contacts a product to be locked, larger impact force is generated to damage the product to be locked, so that the yield of the screw locking is not ideal.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a screwdriver head device, in the screw locking process, a suction nozzle compresses a buffer mechanism to enable the suction nozzle and the buffer mechanism to move upwards relative to a screwdriver head, so that the lower end of the screwdriver head is exposed out of the suction nozzle to contact with the screw, the screwdriver head drives the screw to rotate, the rotating action of the screw is realized, the impact force of the screw on a product to be locked when the screw just contacts the product to be locked is effectively reduced, the damage of the screw on the product to be locked is reduced, and the yield of the screw locking is improved.
The second purpose of the invention is to provide a screw driver, wherein in the screw locking process, the suction nozzle compresses the buffer mechanism, so that the suction nozzle and the buffer mechanism move upwards relative to the driver head, the lower end of the driver head is exposed out of the suction nozzle to contact with the screw, the screw is driven to rotate by the driver head, the rotating action of the screw is realized, the impact force of the screw on a product to be locked when the screw just contacts the product to be locked is effectively reduced, the damage of the screw on the product to be locked is reduced, and the yield of the screw is improved.
One of the purposes of the invention is realized by adopting the following technical scheme:
The head-scraping device comprises a fixed seat, a suction nozzle, a head-scraping mechanism and a buffer mechanism, wherein the buffer mechanism comprises a head-scraping sleeve and a first elastic piece, the fixed seat, the head-scraping sleeve and the suction nozzle are mutually matched to form an installation cavity, the head-scraping mechanism and the first elastic piece are installed in the installation cavity, the upper part of the head-scraping sleeve is abutted to the first elastic piece, and the lower part of the head-scraping sleeve is connected with the suction nozzle; the suction nozzle and the buffer mechanism can move up and down relative to the head-batch mechanism, so that the lower end of the head-batch mechanism is exposed or hidden in the mounting cavity.
Further, the screwdriver head mechanism comprises a screwdriver head and a fixing assembly used for fixing the screwdriver head, and the fixing assembly is fixed on a transmission shaft of the screwdriver.
Further, the fixing assembly comprises a clamping seat and at least two spheres, a first mounting hole for mounting the batch head and at least two second mounting holes for mounting the spheres are formed in the clamping seat, the second mounting holes are arranged along the radial direction of the first mounting holes and communicated with the second mounting holes, and grooves matched with the spheres are formed in the batch head; the ball body is clamped on the second mounting hole and the groove to clamp the screwdriver bit.
Further, the second mounting hole is a conical hole, and the small diameter end of the conical hole is positioned at one side close to the first mounting hole.
Further, the radius of the small diameter end of the conical hole is smaller than the radius of the sphere; the large diameter end of the conical hole is larger than or equal to the radius of the sphere.
Further, the screwdriver bit and the clamping seat can reciprocate in the depth direction of the mounting cavity.
Further, the head-batching mechanism further comprises a second elastic piece, a pressing sleeve and a first limiting piece which are sleeved outside the clamping seat in sequence along the axial direction of the head-batching mechanism, wherein the pressing sleeve is provided with a containing groove for containing the ball body along the circumferential direction of the pressing sleeve, and the upper part of the containing groove is provided with an inclined plane; in the initial state, the upper end of the pressing sleeve is abutted with the second elastic piece, and the lower end of the pressing sleeve is abutted with the first limiting piece; when an upward acting force is applied to the pressing sleeve, the second elastic piece is compressed, and the ball moves along the radial direction of the first mounting hole so as to loosen the batch head; when the acting force applied to the pressing sleeve is removed, the pressing sleeve is reset under the action of the second elastic piece, and the inclined surface extrudes the ball body to enable the ball body to move inwards along the radial direction of the first mounting hole so as to clamp the batch head.
Further, a flat part matched with a transmission shaft of the screwdriver is arranged at the top of the screwdriver head.
Further, the device also comprises a second limiting piece for limiting the batch head sleeve, and the second limiting piece is detachably connected with the lower end of the fixing seat.
The second purpose of the invention is realized by adopting the following technical scheme:
A screw driver comprising a driver head arrangement as described above.
Compared with the prior art, the invention has the beneficial effects that:
According to the screwdriver head device, when the suction nozzle is connected with the vacuum generator to generate vacuum suction to adsorb the screw, the screwdriver head is driven by the transmission shaft of the screwdriver to rotate at the moment, and the screw locking rotation action can be realized. In the process of locking the screw, the suction nozzle is contacted with the screw and drives the screw to press down, the screw can push the suction nozzle upwards for a reverse upward acting force of the suction nozzle after contacting the product to be locked, the suction nozzle compresses the buffer mechanism, the suction nozzle and the buffer mechanism move upwards relative to the screwdriver head, the lower end of the screwdriver head is exposed to the suction nozzle to contact the screw, the screwdriver head drives the screw to rotate, the rotating action of the screw to be locked is realized, the impact force of the screw to the product to be locked when the screw just contacts the product to be locked is effectively reduced by the buffer mechanism, the damage of the screw to the product to be locked is reduced, and the yield of the screw to be locked is improved. After the screw is locked, the buffer mechanism resets, and the suction nozzle and the relative screwdriver head move downwards, so that the lower end of the screwdriver head is hidden in the suction nozzle.
Drawings
FIG. 1 is a schematic diagram of a screwdriver according to the present invention;
FIG. 2 is an exploded view of the screwdriver of FIG. 1;
FIG. 3 is a cross-sectional view of the screw driver of FIG. 1 at A-A;
FIG. 4 is an enlarged view of a portion of the screw driver at C of FIG. 3;
FIG. 5 is a schematic view of a portion of the screw driver of FIG. 1 exploded;
FIG. 6 is a schematic diagram of a screwdriver bit device of the screwdriver of FIG. 1;
FIG. 7 is a cross-sectional view of the batch head apparatus of FIG. 6 at B-B;
FIG. 8 is a schematic view of a portion of the batch head apparatus of FIG. 6;
FIG. 9 is a schematic diagram of a photo-detecting device of the screwdriver of FIG. 1;
FIG. 10 is a cross-sectional view of the photodetection device in FIG. 9;
fig. 11 is a schematic view of a portion of the photodetection device in fig. 9 exploded.
In the figure: 10. a driving device; 11. a power mechanism; 111. a motor; 112. a motor base; 1121. positioning the step; 12. a transmission mechanism; 121. a transmission shaft; 1212. a third fixing hole; 1213. a second flat position; 1214. a third flat position; 1215. a sixth fixing hole; 122. a coupling assembly; 1221. a first coupling; 12211. slotting; 1222. a second coupling; 12221. a first fixing hole; 12222. a bump; 123. a gear assembly; 1231. a gear box; 12311. a case; 12312. a case cover; 12312A and a positioning groove; 1232. a first gear; 12321. a second fixing hole; 1233. a second gear; 12331. a first clamping groove; 1234. a third gear; 124. a rotating member; 1241. a first flat position; 1242. a second clamping groove; 1243. a fourth fixing hole; 20. a head-batching device; 21. a head-cutting mechanism; 211. a head is batched; 2111. a groove; 2112. a flat portion; 212. a fixing assembly; 2121. a clamping seat; 21211. a first mounting hole; 21212. a second mounting hole; 21213. a mounting groove; 21214. a fifth fixing hole; 21215. a clamping seat body; 21216. a column; 2122. a sphere; 213. a second elastic member; 214. pressing the sleeve; 2141. a receiving groove; 2142. an inclined plane; 215. a first limiting member; 22. a fixing seat; 221. a first boss; 23. a suction nozzle; 231. a step hole; 24. a buffer mechanism; 241. a head sleeve is assembled; 242. a first elastic member; 25. a seal ring; 26. an air pipe joint; 27. a spacer ring; 28. a first tightening nut; 29. a second limiting piece; 30. a photoelectric detection device; 31. an induction shaft; 311. an annular groove; 32. photoelectric switching on; 33. a reset mechanism; 331. a housing; 3311. a first housing; 3312. a second housing; 332. a reset assembly; 3321. a first reset member; 3322. a second reset member; 333. a fixing member; 3331. a fixing member body; 3332. a second convex portion; 334. a first stopper; 3341. a stopper body; 3342. a first convex portion; 335. a second stopper; 34. a light opening seat; 35. a second tightening nut; 36. a guide post; 37. a pipe clamp; 371. the air pipe hole.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Referring to fig. 1-11, the screwdriver provided by the embodiment of the invention comprises a driving device 10, a screwdriver head device 20, a control device (not labeled) and a photoelectric detection device 30 for detecting whether a screw is locked, wherein the driving device 10 comprises a power mechanism 11 and a transmission mechanism 12, and the power mechanism 11 and the photoelectric detection device 30 are electrically connected with the control device; the transmission mechanism 12 comprises a transmission shaft 121, and the power mechanism 11 is in transmission connection with the transmission shaft 121; the head batching device 20 comprises a head batching mechanism 21, the head batching mechanism 21 comprises a head batching 211, and the head batching 211 is rotationally connected with a transmission shaft 121; the photoelectric detection device 30, the head batching device 20 and the power mechanism 11 are all arranged on the transmission mechanism 12.
When the screwdriver provided by the above technical scheme works, the power mechanism 11 drives the screwdriver bit 211 to rotate through the transmission shaft 121, so as to lock the screw. In the process of locking the screw, when the photoelectric detection device 30 detects that the screw is not locked in place, the photoelectric detection device 30 sends an unlocked signal to the control device, and the control device receives the unlocked signal and controls the power mechanism 11 to increase the torsion force to continue locking, so that the yield of locking the screw is improved, and the quality of products is improved.
As shown in fig. 2-5, as a preferred embodiment, the transmission mechanism 12 further includes a coupling assembly 122, a gear assembly 123 and a rotating member 124, the power mechanism 11 is in transmission connection with the gear assembly 123 through the coupling assembly 122, the gear assembly 123 is in transmission connection with the rotating member 124 for driving the rotating member 124 to rotate, and the rotating member 124 is sleeved outside the transmission shaft 121 and fixedly connected with the transmission shaft 121, so that the structure is reasonable and reliable in design, and high in transmission efficiency.
The gear assembly 123 includes a gear case 1231, a first gear 1232, a second gear 1233, and a third gear 1234 are mounted on the gear case 1231, the first gear 1232 is in transmission connection with the coupling assembly 122, the first gear 1232 is in transmission connection with the third gear 1234, the third gear 1234 is in transmission connection with the rotating member 124 through the second gear 1233, and the second gear 1233 and the rotating member 124 are both sleeved outside the transmission shaft 121. In the actual application process, whether the third gear 1234 or more transmission gears are provided may be selected according to actual needs, and the present invention is not limited thereto. In an embodiment of the present invention, the shafts of the first gear 1232, the second gear 1233 and the third gear 1234 are each supported on the gear housing 1231 by bearings.
As a preferred embodiment, the coupling assembly 122 includes a first coupling 1221 and a second coupling 1222 drivingly connected to the first coupling 1221, the power unit 11 includes a motor 111 and a motor base 112 for fixing the motor 111, and the gear case 1231 includes a case 12311 and a case cover 12312 covering the case 12311. The case 12311 is fixed to the case cover 12312 by screws. The motor base 112 is provided with a positioning step 1121, and the cover 12312 is provided with a positioning groove 12312a matched with the positioning step 1121. The first coupling 1221 is provided with a slot 12211, and the second coupling 1222 is provided with a first fixing hole 12221 and a projection 12222 engaged with the slot 12211. The first coupling 1221 is sleeved on the output shaft of the motor 111, the first coupling 1221 is locked and fixed with the output shaft of the motor 111 through a screw, the motor 111 fixed with the first coupling 1221 is fixed on the motor base 112 through a screw, then the positioning step 1121 of the motor base 112 is correspondingly placed on the positioning groove 12312a to position the motor base 112 and the case cover 12312, and then the motor base 112 and the case cover 12312 are locked and fixed through the screw, at this time, the bump 12222 is clamped on the slot 12211 to realize the transmission connection of the first coupling 1221 and the second coupling 1222. The shaft of the first gear 1232 is provided with a second fixing hole 12321, and a screw is inserted through the first fixing hole 12221 and the second fixing hole 12321 to fix the second coupling 1222 to the first gear 1232. The arrangement direction of the first gear 1232, the second gear 1233 and the third gear 1234 is perpendicular to the axial direction of the transmission shaft 121, the transmission shaft 121 is parallel to the output shaft of the motor 111, the installation space of the screwdriver is greatly reduced by the arrangement of the structure, the structure is compact, the size is small, and the miniaturization of the screwdriver is realized. It can be understood that the motor 111 is a full-closed-loop servo motor, and can feed back and control torsion in real time, so that accurate control of screw locking is realized, the yield of screw locking is improved, and the quality of products is improved.
As a preferred embodiment, the second gear 1233 is provided with a first clamping groove 12331, the rotating member 124 is provided with a first flat position 1241 and a second clamping groove 1242, and the first flat position 1241 can be clamped in the first clamping groove 12331 to realize the rotational connection between the second gear 1233 and the rotating member 124. The first locking groove 12331 is slidably engaged with the first flat part 1241, so that the rotating member 124 can reciprocate along the axial direction of the transmission shaft 121 relative to the second gear 1233. The transmission shaft 121 is provided with a third fixing hole 1212 and a second flat position 1213 which can be clamped in the second clamping groove 1242, the rotating member 124 is provided with a fourth fixing hole 1243 which is matched with the third fixing hole 1212, and a screw penetrates through the third fixing hole 1212 and the fourth fixing hole 1243 to lock and fix the rotating member 124 and the transmission shaft 121. In this embodiment, the number of the second flat portions 1213 is two, and the two second flat portions 1213 are disposed opposite to each other. When the second gear 1233 drives the rotating member 124 to rotate, the second clamping groove 1242 and the second flat position 1213 can effectively rotate the transmission shaft 121 fixedly connected to the rotating member 124.
As shown in fig. 2, 3, 4, 6, 7 and 8, as a preferred embodiment, the batch head device 20 further includes a fixing base 22, a suction nozzle 23 and a buffer mechanism 24, the fixing base 22 is fixed on the transmission mechanism 12, the suction nozzle 23 is connected with the buffer mechanism 24, and the suction nozzle 23 and the buffer mechanism 24 can move up and down relative to the batch head 211, so that the lower end of the batch head 211 is exposed or hidden in the suction nozzle 23.
In the screwdriver head device 20 of the above embodiment, when the suction nozzle 23 is connected with the vacuum generator to generate vacuum suction to attract the screw, the screwdriver head 211 is driven by the transmission shaft 121 to rotate at this time, so as to realize the rotation action of locking the screw. In the process of locking the screw, the suction nozzle 23 is contacted with the screw and drives the screw to press down, after the screw contacts the product to be locked, a reverse upward acting force is applied to the suction nozzle 23 to push the suction nozzle 23 upwards, the suction nozzle 23 compresses the buffer mechanism 24, the suction nozzle 23 and the buffer mechanism 24 move upwards relative to the screwdriver head 211, the lower end of the screwdriver head 211 is exposed to the suction nozzle 23 to contact the screw, the screwdriver head 211 drives the screw to rotate, the rotating action of the screw is realized, the impact force of the screw to the product to be locked when the screw just contacts the product to be locked is effectively reduced by the buffer mechanism 24, the damage of the screw to the product to be locked is reduced, and the yield of the screw to be locked is improved. When the screw locking is completed, the buffer mechanism 24 is reset, and the suction nozzle 23 and the relative batch head 211 move downwards, so that the lower end of the batch head 211 is hidden in the suction nozzle 23.
As a preferred embodiment, the buffer mechanism 24 includes a batch head cover 241 and a first elastic member 242, the fixing base 22, the batch head cover 241 and the suction nozzle 23 are mutually matched to form an installation cavity (not labeled), the batch head mechanism 21 and the first elastic member 242 are installed in the installation cavity, the upper portion of the batch head cover 241 is abutted with the first elastic member 242, and the lower portion of the batch head cover 241 is connected with the suction nozzle 23. The suction nozzle 23 is sleeved outside the batch head 211, the upper part of the suction nozzle 23 is connected with the batch head 211 in a sealing way through a sealing ring 25, a step hole 231 is formed in the lower end of the suction nozzle 23, the suction nozzle 23 is connected with an air pipe joint 26, and the suction nozzle 23 is connected with the air pipe joint 26 in a sealing way through a partition ring 27. When the air pipe joint 26 of the suction nozzle 23 is connected with the vacuum generator and vacuum suction force is generated, the vacuum suction force can suck the screw on the stepped hole 231 of the suction nozzle 23. The fixing base 22 is fixed on the case 12311 by screws, the lower part of the fixing base 22 is sleeved outside the batch head cover 241, and the lower part of the batch head cover 241 is sleeved outside the suction nozzle 23. The fixing base 22 is provided with a first boss 221, the upper end of the first elastic piece 242 is abutted against the first boss 221, and the lower end of the first elastic piece 242 is abutted against the upper end of the batch head cover 241. In this embodiment, the batch head cover 241 is an elastic batch head cover.
The head mechanism 21 further includes a fixing assembly 212 for fixing the head 211, and the fixing assembly 212 is fixed to the transmission shaft 121. The fixing assembly 212 comprises a clamping seat 2121 and at least two spheres 2122, wherein a first mounting hole 21211 for mounting the batch head 211 and at least two second mounting holes 21212 for mounting the spheres 2122 are formed in the clamping seat 2121, the second mounting holes 21212 are arranged along the radial direction of the first mounting holes 21211 and communicated with the second mounting holes 21212, and grooves 2111 matched with the spheres 2122 are formed in the batch head 211; the ball 2122 is caught to the second mounting hole 21212 and the groove 2111 to clamp the head 211. The batch head 211 and clamping seat 2121 are capable of reciprocating in the depth direction of the mounting cavity. The groove 2111 is an annular groove, the second mounting hole 21212 is a conical hole, the small diameter end of the conical hole is positioned at one side close to the first mounting hole 21211, and the radius of the small diameter end of the conical hole is smaller than that of the ball 2122 so as to prevent the ball 2122 from falling out and falling into the first mounting hole 21211; the large diameter end of the tapered bore is greater than or equal to the radius of sphere 2122. At least two second mounting holes 21212 are uniformly disposed along the circumference of the first mounting hole 21211 to better grip the bits 211. The head-batching mechanism 21 further comprises a second elastic member 213, a pressing sleeve 214 and a first limiting member 215, wherein the second elastic member 213, the pressing sleeve 214 and the first limiting member 215 are sequentially sleeved outside the clamping seat 2121 along the axial direction of the head 211, the first limiting member is used for limiting the movable travel of the pressing sleeve 214 in the depth direction of the installation cavity, the pressing sleeve 214 is provided with a containing groove 2141 for containing the ball 2122 along the circumferential direction of the pressing sleeve 214, and the upper part of the containing groove 2141 of the pressing sleeve 214 is provided with an inclined surface 2142. The screwdriver head device 20 further comprises a first tightening nut 28 and a second limiting piece 29 for limiting the screwdriver head sleeve 241, and the second limiting piece 29 is detachably connected with the lower end of the fixing seat 22. In the present embodiment, the first tightening nut 28 and the second limiting member 29 are both sleeved outside the fixing base 22 and are both in threaded connection with the fixing base 22. The second limiting part 29 is provided with a second boss (not labeled), the batch head cover 241 is provided with a third boss (not labeled) matched with the second boss, and the restriction of the movable travel of the batch head cover 241 in the depth direction of the installation cavity is realized through the cooperation of the second boss and the third boss. The clamping seat 2121 is further provided with a mounting groove 21213 for mounting the first limiting member 215 and a fifth fixing hole 21214 arranged along the radial direction of the first mounting hole 21211, the lower portion of the transmission shaft 121 is provided with a sixth fixing hole 1215 adapted to the fifth fixing hole 21214, and screws penetrate through the fifth fixing hole 21214 and the sixth fixing hole 1215 to fixedly connect the clamping seat 2121 and the transmission shaft 121. The lower end of the transmission shaft 121 is provided with a third flat 1214, and the top of the batch head 211 is provided with a flat 2112 matched with the third flat 1214, so that the transmission shaft 121 can better drive the batch head 211 to rotate. The clamping seat 2121 includes a clamping seat body 21215 and a cylinder 21216 extending from the clamping seat body 21215, the second elastic member 213, the pressing sleeve 214 and the first limiting member 215 are sequentially sleeved outside the cylinder 21216 from top to bottom, the upper end of the second elastic member 213 abuts against the clamping seat body 21215, and the lower end of the second elastic member 213 abuts against the pressing sleeve 214. The first elastic member 242 and the second elastic member 213 are both springs.
In the head-batching device 20 of the above embodiment, in the initial state, the upper end of the pressing sleeve 214 is abutted against the second elastic member 213, and the lower end of the pressing sleeve 214 is abutted against the first limiting member 215. When the batch head 211 needs to be replaced, the second limiting member 29 and the batch head cover 241 are detached from the fixing seat 22, and then an upward force is applied to the press sleeve 214, and the press sleeve 214 moves upward to compress the second elastic member 213, and in the process, the ball 2122 moves to the accommodating groove 2141 along the radial direction of the first mounting hole 21211 so as to loosen the batch head 211; the old head is removed and the appropriate head is placed in the corresponding position, the force applied to the press sleeve 214 is removed, the press sleeve 214 is reset under the action of the second elastic member 213, and the inclined surface 2142 presses the ball 2122 to move the ball 2122 radially inward along the first mounting hole 21211 so as to clamp the head 211.
As shown in fig. 2,3,4, 9, 10 and 11, as a preferred embodiment, the photodetection device 30 includes a sensing shaft 31, a photoelectric switch 32, a reset mechanism 33, and a switch light seat 34 for fixing the photoelectric switch 32, where the switch light seat 34 is fixed on the transmission mechanism 12; the sensing shaft 31 can move upwards under the action of the transmission shaft 121, so that the sensing shaft 31 is close to the photoelectric switch 32; the sensing shaft 31 can be reset by the reset mechanism 33 so that the sensing shaft 31 is far away from the photoelectric switch 32.
In the screwdriver of the above embodiment, the power mechanism 11 drives the screwdriver bit 211 to rotate through the transmission shaft 121, so as to lock the screw. In the process of locking the screw, when the photoelectric detection device 30 detects that the screw is not locked in place, the photoelectric detection device 30 sends an unlocked signal to the control device, and the control device receives the unlocked signal and controls the power mechanism 11 to increase the torsion force to continue locking, so that the yield of locking the screw is improved, and the quality of products is improved. Since the connection relationship between the power mechanism 11 and the internal circuit of the photoelectric detection device 30 and the control device belongs to the prior art, the description thereof will not be repeated here.
As a preferred embodiment, the reset mechanism 33 includes a housing 331, a reset component 332, a fixing part 333 for fixing the sensing shaft 31, and a first stop part 334 for limiting the reset component 332 are disposed on the housing 331, the first stop part 334, the reset component 332, and the fixing part 333 are sequentially sleeved on the sensing shaft 31 along the axial direction of the sensing shaft 31, and the fixing part 333 can reset under the action of the reset component 332, so that the sensing shaft 31 is far away from the photoelectric switch 32. The reset assembly 332 includes a first reset element 3321 and a second reset element 3322, the first reset element 3321 is disposed between the first stop element 334 and the fixing element 333, the second reset element 3322 is sleeved in the first reset element 3321, and the two reset elements can increase the reset force for resetting the fixing element 333, so as to ensure that the induction shaft 31 can recover to the initial position. The first stopper 334 includes a stopper body 3341 and a first protrusion 3342 extending from a side of the stopper body 3341 near the fixing member 333; the fixing member 333 includes a fixing member body 3331 and a second protruding portion 3332 extending from the fixing member body 3331 near the first stop member 334, and the first restoring member 3321 is sleeved on the first protruding portion 3342 and the second protruding portion 3332. The reset mechanism 33 further comprises a second stop member 335 for limiting the second reset member 3322, and the sensing shaft 31 is provided with an annular groove 311 for installing the second stop member 335; one end of the second return piece 3322 abuts against the first convex portion 3342, and the other end of the second return piece 3322 abuts against the second stopper 335. In this embodiment, the second stop 335 is a snap spring, and the first return member 3321 and the second return member 3322 are both springs.
As a preferred embodiment, the housing 331 includes a first housing 3311 and a second housing 3312 connected to the first housing 3311, the first housing 3311 and the second housing 3312 cooperate to form a cavity (not shown), and the first stopper 334, the reset assembly 332 and the fixing member 333 are all disposed in the cavity. The first housing 3311 is screwed to the second housing 3312, and a second tightening nut 35 is further provided on the outside of the second housing 3312. The second housing 3312 is fixed to the cover 12312 by screws, and the transmission shaft 121 is connected to the fixing member 333 by bearings. The photoelectric detection device 30 further comprises a guide post 36 and a pipe clamp 37 sleeved outside the second housing 3312, the guide post 36 is in threaded connection with the box cover 12312, the light-opening seat 34 can reciprocate along the length direction of the guide post 36, the position of the light-opening seat 34 on the guide post 36 is adjusted according to actual needs, and after the light-opening seat 34 is adjusted to a proper position, the light-opening seat 34 and the guide post 36 are locked and fixed through screws. The pipe clamp 37 is provided with an air pipe hole 371, the air pipe joint 26 is connected with the vacuum generator through an air pipe, and the air pipe passes through the air pipe hole 371 so as to fix and limit the air pipe.
The principle of the invention is as follows: the motor 111 drives the transmission shaft 121 to rotate through the coupling assembly 122, the first gear 1232, the second gear 1233, the third gear 1234 and the rotating member 124, the transmission shaft 121 drives the clamping seat 2121 and the screwdriver bit 211 to rotate, and when the suction nozzle 23 is connected with the vacuum generator to generate vacuum suction to adsorb screws and the screwdriver bit 211 contacts the screws, the screws can be driven to rotate, so that the screw locking rotation is realized. In the process of locking the screw, the suction nozzle 23 drives the screw to press down, after the screw contacts a product to be locked, the screw can give the screwdriver head 211 an upward reverse acting force, the screwdriver head 211 can drive the transmission shaft 121 and the fixing piece 333 to move upwards while rotating, the fixing piece 333 overcomes the acting force of the first reset piece 3321 and the second reset piece 3322 to drive the induction shaft 31 to move upwards to the detection position of the photoelectric switch 32, and the photoelectric switch 32 can detect signals. Along with the gradual locking of the screw, the fixing part 333 drives the induction shaft 31 to gradually reset under the action of the first reset part 3321 and the second reset part 3322, and at this time, if the photoelectric switch 32 does not detect a signal, the screw is completely locked in place; if the photoelectric switch 32 detects a signal, the screw is not completely locked in place, the photoelectric switch 32 sends the detected signal to the control device, and the control device receives the signal and controls the motor 111 to increase the torsion force to continue locking until the preset second torsion force is reached, and then the locking is stopped.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (4)
1. The head-batching device is characterized by comprising a fixed seat, a suction nozzle, a head-batching mechanism and a buffer mechanism, wherein the buffer mechanism comprises a head-batching sleeve and a first elastic piece, the fixed seat, the head-batching sleeve and the suction nozzle are mutually matched to form an installation cavity, the head-batching mechanism and the first elastic piece are installed in the installation cavity, the upper part of the head-batching sleeve is abutted to the first elastic piece, and the lower part of the head-batching sleeve is connected with the suction nozzle; the suction nozzle and the buffer mechanism can move up and down relative to the head-batching mechanism so that the lower end of the head-batching mechanism is exposed or hidden in the mounting cavity;
The screwdriver head mechanism comprises a screwdriver head and a fixing assembly for fixing the screwdriver head, and the fixing assembly is fixed on a transmission shaft of the screwdriver;
The fixing assembly comprises a clamping seat and at least two spheres, a first mounting hole for mounting the batch head and at least two second mounting holes for mounting the spheres are formed in the clamping seat, the second mounting holes are arranged along the radial direction of the first mounting holes and are communicated with the second mounting holes, and grooves matched with the spheres are formed in the batch head; the ball body is clamped on the second mounting hole and the groove to clamp the screwdriver bit;
The second mounting hole is a conical hole, and the small-diameter end of the conical hole is positioned at one side close to the first mounting hole;
the radius of the small-diameter end of the conical hole is smaller than the radius of the sphere; the large diameter end of the conical hole is larger than or equal to the radius of the sphere;
The photoelectric detection device comprises an induction shaft, a photoelectric switch light, a reset mechanism and a light switch seat for fixing the photoelectric switch, wherein the light switch seat is fixed on the transmission mechanism; the induction shaft can move upwards under the action of the transmission shaft so as to enable the induction shaft to be close to the photoelectric switch; the induction shaft can be reset under the action of the reset mechanism, so that the induction shaft is far away from the photoelectric switch; the head-batching mechanism further comprises a second elastic piece, a pressing sleeve and a first limiting piece which are sleeved outside the clamping seat in sequence along the axial direction of the head-batching mechanism, wherein the pressing sleeve is provided with a containing groove for containing the ball body along the circumferential direction of the pressing sleeve, and the upper part of the containing groove is provided with an inclined plane; in the initial state, the upper end of the pressing sleeve is abutted with the second elastic piece, and the lower end of the pressing sleeve is abutted with the first limiting piece; when an upward acting force is applied to the pressing sleeve, the second elastic piece is compressed, and the ball moves along the radial direction of the first mounting hole so as to loosen the batch head; when the acting force applied to the pressing sleeve is removed, the pressing sleeve is reset under the action of the second elastic piece, and the inclined surface extrudes the ball body to enable the ball body to move inwards along the radial direction of the first mounting hole so as to clamp the batch head;
the device further comprises a second limiting part used for limiting the batch head sleeve, and the second limiting part is detachably connected with the lower end of the fixing seat.
2. The head assembly of claim 1, wherein the head and the clamping seat are reciprocally movable in a depth direction of the mounting cavity.
3. The screwdriver bit device of claim 1, wherein the top of the screwdriver bit is provided with a flat portion for mating with a drive shaft of a screwdriver.
4. A screw driver comprising a driver head arrangement as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869020.6A CN107618000B (en) | 2017-09-22 | 2017-09-22 | Criticizing head device and screwdriver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869020.6A CN107618000B (en) | 2017-09-22 | 2017-09-22 | Criticizing head device and screwdriver |
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| Publication Number | Publication Date |
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| CN107618000A CN107618000A (en) | 2018-01-23 |
| CN107618000B true CN107618000B (en) | 2024-05-03 |
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| CN201710869020.6A Active CN107618000B (en) | 2017-09-22 | 2017-09-22 | Criticizing head device and screwdriver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE542307C2 (en) | 2018-06-29 | 2020-04-07 | Atlas Copco Ind Technique Ab | Sealing arrangement for a tightening tool |
| CN112790851B (en) * | 2021-01-22 | 2022-09-13 | 武汉大学 | Novel hollow pressurization interlocking screw system of thighbone neck |
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| CN107618000A (en) | 2018-01-23 |
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Country or region after: China Address after: 518000 Huike Industrial Park, No. 1 Industrial Road, Shilong Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Shengshi Intelligent Equipment Co.,Ltd. Address before: 518108 Huike Industrial Park, No. 1 Industrial Road, Shilong Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN SUNSON INTELLIGENT EQUIPMENT Co.,Ltd. Country or region before: China |
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