Automatic screw locking mechanism

Abstract

The utility model provides an automatic screw locking mechanism. The automatic screw locking mechanism comprises a mounting vertical plate, a lifting driving mechanism, a screw locking mechanism and a guide mechanism, the screw locking mechanism comprises a longitudinal sliding seat and an electric screwdriver; the electric screwdriver comprises an electric screwdriver main body and a screwdriver head; the guide mechanism comprises a quick-change mounting base fixedly connected to the bottom of the mounting vertical plate, a guide piece, a limiting piece and a clamping arm assembly, a longitudinal through hole is formed in the quick-change mounting base in a penetrating mode, a longitudinal pushing hole, an inclined feeding channel and a limiting cavity are formed in the guide piece, and the bottom end of the inclined feeding channel extends to the bottom of the guide piece; the limiting cavity is communicated with the inclined feeding channel through an intersection window, the top end and the bottom end of the longitudinal pushing hole are communicated with the longitudinal through hole and the limiting cavity respectively, the limiting piece is hinged to the limiting cavity through a torsional spring and can close the intersection window, the clamping arm assembly comprises two discharging clamping arms, and each discharging clamping arm comprises an arm part and a discharging guide part. And a discharging guide groove is formed in the discharging guide part, so that the situation that the screws are blocked can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw locking equipment field especially a kind of automatic screw locking mechanism. BACKGROUND

[0002] In the production process of some products, screw locking operation is needed, in order to realize the automation of screw locking operation, automatic screw locking mechanism also appears successively. The existing screw locking mechanism is prone to screw plugging discharge port, resulting in equipment downtime, which needs manual unblocking, and the unblocking process is troublesome, affecting normal production. SUMMARY

[0003] The utility model wants to solve the problem, provide a kind of automatic screw locking mechanism, prevent the situation of screw plugging, ensure stable production.

[0004] To solve the above technical problems, an automatic screw locking mechanism is provided, comprising a mounting vertical plate, a lifting drive mechanism, a screw locking mechanism and a guide mechanism. The screw locking mechanism comprises a longitudinal slide connected to the mounting vertical plate along the Z-axis direction and an electric screwdriver. The electric screwdriver comprises a screwdriver body detachably connected to the longitudinal slide and a bit detachably connected to the screwdriver body. The lifting drive mechanism is arranged on the mounting vertical plate and is used to drive the longitudinal slide to move up and down. The guide mechanism comprises a quick-change mounting seat fixedly connected to the bottom of the mounting vertical plate, a guide piece, a limiting piece and a clamping arm assembly. A longitudinal through hole is provided in the quick-change mounting seat. The bit is movably arranged in the longitudinal through hole. The guide piece is detachably connected to the bottom of the quick-change mounting seat. The guide piece is provided with a longitudinal pushing hole, an inclined feeding channel and a limiting cavity. The bottom end of the inclined feeding channel extends to the bottom of the guide piece. The limiting cavity is communicated with the inclined feeding channel through a convergence window. The top end and the bottom end of the longitudinal pushing hole are communicated with the longitudinal through hole and the limiting cavity respectively. The limiting piece is hinged to the limiting cavity by a torsional spring and can close the convergence window. The clamping arm assembly comprises two symmetrical discharge clamping arms. Each discharge clamping arm comprises an arm portion hinged to the side of the guide piece and a discharge guide portion connected to the bottom end of the arm portion. A return spring is arranged between the inner side of the arm portion and the side wall of the guide piece. A discharge guide groove is provided on the discharge guide portion. When the two discharge guide grooves are closed, a discharge guide channel is formed.

[0005] Preferably, the guide mechanism further comprises a wide pneumatic gripper arranged at the bottom of the mounting vertical plate. A poking rod is mounted on the claw arm of the wide pneumatic gripper. A poking block is fixedly connected to the outer side of the arm portion. A poking guide groove is provided on the outer side surface of the poking block. The poking rod is movably arranged in the poking guide groove.

[0006] Preferably, the screw locking mechanism further comprises a blowing assembly, the blowing assembly comprising a longitudinal sliding block slidingly connected to the mounting vertical plate along the Z-axis direction, a blowing pipe fixedly connected to the bottom of the longitudinal sliding block, a connecting pin fixedly connected to the bottom of the longitudinal sliding seat, the bottom of the longitudinal sliding block being provided with a first through hole in clearance fit with the pin cap of the connecting pin, the top of the longitudinal sliding block being provided with a second through hole in clearance fit with the pin rod of the connecting pin, the pin cap and the pin rod of the connecting pin being movably arranged on the first through hole and the second through hole respectively, the pin rod of the connecting pin being sleeved with a buffer spring abutting between the longitudinal sliding seat and the longitudinal sliding block, the top of the longitudinal sliding block being provided with an insertion hole in communication with the inside of the blowing pipe, the bit being inserted into the blowing pipe through the insertion hole and movably arranged in the blowing pipe, the blowing pipe being movably arranged on the longitudinal through hole, the longitudinal sliding block being provided with an air inlet interface in communication with the blowing pipe.

[0007] Preferably, the lifting driving mechanism comprises a first longitudinal cylinder and a second longitudinal cylinder fixedly connected to the longitudinal sliding seat and the mounting vertical plate respectively, the output shaft of the first longitudinal cylinder being fixedly connected to the output shaft of the second longitudinal cylinder.

[0008] Preferably, the longitudinal sliding seat is provided with two baffle plates side by side, the inner side wall of the baffle plate being provided with a clamping groove, a quick release plate being arranged between the two clamping grooves, the baffle plate being provided with a first positioning screw hole in communication with the clamping groove, the first positioning screw hole being connected with a first positioning screw, one end of the first positioning screw abutting against the side wall of the quick release plate, the quick release plate being provided with a mounting hole, the electric screwdriver body being fixedly connected to the quick release plate and its output end being arranged out of the mounting hole.

[0009] Preferably, the input end of the oblique feeding channel is provided with a mounting groove, the mounting groove being inserted with a feeding cylinder, the side wall of the guide piece being provided with a second positioning screw hole in communication with the mounting groove, the second positioning screw hole being connected with a second positioning screw, one end of the second positioning screw abutting against the side wall of the feeding cylinder.

[0010] Preferably, the discharging guide groove comprises a first circular groove section, a conical groove section and a second circular groove section sequentially connected from top to bottom.

[0011] The utility model discloses an automatic screw locking mechanism, initially, the limiting piece closes the intersection window, and two discharge clamping arms are in the closed state under the elastic force of reset spring, and the screw is input into the oblique feeding channel according to the direction of tail end inwards, and the screw will enter the discharge guide channel along the oblique feeding channel, and the screw will not enter the limiting cavity or be stuck at the intersection window, and the longitudinal sliding seat is driven to move downwards through the lifting drive mechanism, and the bit will exert the thrust to the limiting piece through the longitudinal pushing hole, and the limiting piece will overcome the torsion of torsional spring and rotate, and the intersection window will be opened, and the bit passes through the intersection window and exerts the thrust to the screw on the discharge guide channel, and two discharge clamping arms will overcome the elastic force of reset spring and open under the thrust of the screw, and the screw will be inserted into the hole position of the screw to be locked under the pushing of the bit, and the screw can be locked on the screw hole position through the rotation of the bit driven by the electric bit main body, and the screw jamming situation can be avoided, and the stable production can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model discloses an appearance structure schematic diagram.

[0013] Figure 2 The utility model discloses the cross -section view of first position.

[0014] Figure 3 The utility model discloses the cross -section view of second position.

[0015] Figure 4 The utility model discloses the appearance structure schematic diagram of guide piece.

[0016] Figure 5 The utility model discloses the partial close -up structure schematic diagram of A department. Figure 1

[0017] Figure 6 The utility model discloses the partial close -up structure schematic diagram of B department. Figure 2

[0018] Figure 7 The utility model discloses the partial close -up structure schematic diagram of C department. Figure 2

[0019] Figure 8 The utility model discloses the partial close -up structure schematic diagram of D department. Figure 3

[0020] ​​​​Explanation of reference numerals: mounting vertical plate 1, lifting driving mechanism 2, first longitudinal cylinder 20, second longitudinal cylinder 21, locking screw mechanism 3, longitudinal sliding seat 30, electric screwdriver 31, electric screwdriver body 310, screwdriver bit 311, air blowing assembly 32, longitudinal sliding block 320, first through hole 320a, second through hole 320b, air blowing pipe 321, connecting pin 322, buffer spring 323, insertion hole 320c, air inlet interface 320d, baffle 33, quick release plate 34, first positioning screw hole 340, guiding mechanism 4, quick-change mounting seat 40, longitudinal through hole 400, guide 41, longitudinal pushing hole 410, second positioning screw hole 410a, oblique feeding channel 411, mounting groove 411a, feeding cylinder 411b, limiting cavity 412, intersection window 413, limiting piece 42, clamping arm assembly 43, discharging clamping arm 430, arm portion 431, discharging guide portion 432, return spring 433, discharging guide groove 434, first circular groove section 434a, conical groove section 434b, second circular groove section 434c, wide air claw 44, poking lever 440, poking block 441, poking guide groove 441a, screw 5. DETAILED DESCRIPTION

[0021] To make the objects, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure.

[0022] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present disclosure.

[0023] Reference Figures 1-8 .

[0024] The utility model provides a kind of automatic screw locking mechanism, include installation vertical plate 1, lifting drive mechanism 2, screw locking mechanism 3, guiding mechanism 4;Screw locking mechanism 3 include longitudinal slide 30 of being connected in the installation vertical plate 1 along Z axle direction sliding, electric screwdriver 31, electric screwdriver 31 include detachably connected on longitudinal slide 30 electric screwdriver main body 310, detachably connected on electric screwdriver main body 310 bit 311;Lifting drive mechanism 2 is set to installation vertical plate 1 for driving longitudinal slide 30 up and down movement;Guiding mechanism 4 include quick-change mounting seat 40 of being fixedly connected in the bottom of installation vertical plate 1, guide piece 41, limiting piece 42, clamping arm assembly 43, longitudinal through-hole 400 is set in quick-change mounting seat 40, bit 311 is movably set in longitudinal through-hole 400, guide piece 41 is detachably connected in the bottom of quick-change mounting seat 40, longitudinal push material hole 410, oblique feedway 411, limiting cavity 412 are set on guide piece 41, oblique feedway 411 bottom end extends to the bottom of guide piece 41, limiting cavity 412 and oblique feedway 411 between pass through intersection window 413 intercommunication, the top end, bottom end of longitudinal push material hole 410 is respectively with longitudinal through-hole 400, limiting cavity 412 intercommunication, limiting piece 42 is hinged on limiting cavity 412 by torsional spring and can close intersection window 413, clamping arm assembly 43 include two symmetrical discharge clamping arms 430 of being set, discharge clamping arm 430 include the arm portion 431 of being hinged on the side of guide piece 41, the discharge guide portion 432 of being connected in the bottom of arm portion 431, the inside of arm portion 431 and the side wall of guide piece 431 abut with reset spring 433, discharge guide portion 432 is provided with discharge guide groove 434, two discharge guide grooves 434 are closed and form discharge guide channel.

[0025] Its working principle is that, initially, limiting piece 42 closes intersection window 413, two discharge clamping arms 430 are in closed state under the elastic force of reset spring 433, screw 5 is input into oblique feedway 411 according to tail end inward direction, screw 5 will enter discharge guide channel along oblique feedway 411, screw 5 will not enter limiting cavity 412 or be stuck in intersection window 413, drive longitudinal slide 30 to move downward by lifting drive mechanism 2, bit 311 will apply pushing force to limiting piece 42 through longitudinal push material hole 410, limiting piece 42 will overcome torsional spring torsion and rotate, intersection window 413 will be opened, bit 311 passes through intersection window 413 and applies pushing force to screw 5 on discharge guide channel, two discharge clamping arms 430 will overcome the elastic force of reset spring 433 and open under the pushing force of screw 5, screw 5 will be inserted into the hole position to be locked under the pushing of bit 311, rotate bit 311 by electric screwdriver main body 310, screw 5 can be locked in screw hole position, can avoid screw jamming, ensure that production process is stable, stable yield.

[0026] Based on the above embodiment, the guide mechanism 4 further comprises a wide air claw 44 arranged at the bottom of the mounting stand 1, a poking rod 440 is arranged on the claw arm of the wide air claw 44, the outer side of the arm portion 431 is fixedly connected with a poking block 441, the outer side of the poking block 441 is provided with a poking guide groove 441a, and the poking rod 440 is movably arranged on the poking guide groove 441a. Specifically, after the screw 5 enters the discharging guide channel, the two poking rods 440 are driven to move close by the wide air claw 44, the poking rod 440 moves on the poking guide groove 441a, and the two discharging clamp arms 430 are opened, so that the screw 5 on the discharging guide channel can be driven by the chuck 311 to enter the hole position of the to-be-locked screw, thereby realizing the automatic opening of the two discharging clamp arms 430, reducing the wear of the chuck 311 and the screw 5, and prolonging the service life of the electric chuck 31. After the wide air claw 44 is reset, the two discharging clamp arms 430 are reset to be closed under the elastic force of the reset spring 433.

[0027] Based on the above embodiment, the screw locking mechanism 3 further comprises a blowing assembly 32, the blowing assembly 32 comprises a longitudinal sliding block 320 slidably connected to the mounting stand 1 along the Z-axis direction, a blowing pipe 321 fixedly connected to the bottom of the longitudinal sliding block 320, and a connecting pin 322 fixedly connected to the bottom of the longitudinal sliding seat 30. The bottom of the longitudinal sliding block 320 is provided with a first through hole 320a in clearance fit with the pin cap of the connecting pin 322, the top of the longitudinal sliding block 320 is provided with a second through hole 320b in clearance fit with the pin rod of the connecting pin 322, the pin cap and the pin rod of the connecting pin 322 are movably arranged on the first through hole 320a and the second through hole 320b respectively, the pin rod of the connecting pin 322 is sleeved with a buffer spring 323 abutting between the longitudinal sliding seat 30 and the longitudinal sliding block 320, the top of the longitudinal sliding block 320 is provided with an insertion hole 320c in communication with the inside of the blowing pipe 321, the chuck 311 is inserted into the blowing pipe 321 through the insertion hole 320c and moves in the blowing pipe 321, the blowing pipe 321 is movably arranged on the longitudinal through hole 400, and the longitudinal sliding block 320 is provided with an air inlet interface 320d in communication with the blowing pipe 321. Specifically, the air inlet interface 320d is connected to a gas supply pipe, during the downward movement of the longitudinal sliding seat 30 driven by the lifting driving mechanism 2, the chuck 311 moves downward and enters the longitudinal pushing hole 410, the connecting pin 322 moves downward driven by the longitudinal sliding seat 30, the buffer spring 323 is compressed and pushes the longitudinal sliding block 320 to move downward, the blowing pipe 321 moves downward driven by the longitudinal sliding block 320 and enters the longitudinal pushing hole 410, when the gas supply pipe supplies air to the air inlet interface 320d, the blowing pipe 321 blows air into the limiting cavity 412, when the two discharging clamp arms 430 are opened, the screw 5 is discharged, and the iron filings attached to the inner walls of the limiting cavity 412, the inclined feeding channel 411 and the discharging guide groove 434 are also blown out, so that the inner walls of the limiting cavity 412, the inclined feeding channel 411 and the discharging guide groove 434 are kept clean.

[0028] Based on the above embodiment, the lifting driving mechanism 2 comprises a first longitudinal cylinder 20 and a second longitudinal cylinder 21 fixedly connected to the longitudinal sliding seat 30 and the mounting stand 1 respectively, the output shaft of the first longitudinal cylinder 20 is fixedly connected to the output shaft of the second longitudinal cylinder 21, and the longitudinal sliding seat 30 can be lowered or raised along the mounting stand 1 under the cooperation of the first longitudinal cylinder 20 and the second longitudinal cylinder 21, thereby improving the working efficiency of the lock screw mechanism.

[0029] Based on the above embodiment, two baffle plates 33 are arranged side by side on the longitudinal sliding seat 30, a clamping groove is arranged on the inner side wall of each baffle plate 33, a quick release plate 34 is arranged between the two clamping grooves, a first positioning screw hole 340 is arranged through the baffle plate 33 and communicates with the clamping groove, a first positioning screw is connected to the first positioning screw hole 340, one end of the first positioning screw abuts against the side wall of the quick release plate 34, a mounting hole is arranged through the quick release plate 34, and the electric screwdriver body 310 is fixedly connected to the quick release plate 34 and its output end passes through the mounting hole. When it is necessary to replace the bit 311, the first positioning screw is first screwed out of the first positioning screw hole 340, then the bit 311 is detached from the electric screwdriver body 3310, and then the quick release plate 34 together with the electric screwdriver body 310 are detached from the longitudinal sliding seat 30. At this time, the bit 311 can be pulled out of the longitudinal through hole 400 and replaced. After the replacement of the bit 311 is completed, the quick release plate 34 together with the electric screwdriver body 310 are assembled between the two clamping grooves, and the bit 311 is connected to the electric screwdriver body 310. The quick replacement of the bit 311 can be realized without the need to detach the quick replacement mounting seat 40.

[0030] Based on the above embodiment, the input end of the oblique feeding channel 411 is provided with a mounting groove 411a, and a feeding cylinder 411b is inserted into the mounting groove 411a. A second positioning screw hole 410a is arranged through the side wall of the guide piece 41 and communicates with the mounting groove 411a. A second positioning screw is connected to the second positioning screw hole 410a, and one end of the second positioning screw abuts against the side wall of the feeding cylinder 411b. The feeding cylinder 411b can be conveniently replaced to replace the feeding guide suitable for different specifications of screws.

[0031] Based on the above embodiment, the discharging guide groove 434 comprises a first circular groove section 434a, a conical groove section 434b and a second circular groove section 434c which are sequentially and communicatively arranged from top to bottom. When the screw 5 enters the discharging guide channel, the entire screw can pass between the two first circular groove sections 434a, the screw cap of the screw 5 will be clamped between the two conical groove sections 434b, and the screw rod of the screw 5 will be clamped between the two second circular groove sections 434c, so that the screw 5 can stably enter the discharging guide channel without skewing, thereby playing a guiding role.

[0032] The above embodiments only describe the preferred embodiments of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the ordinary engineering technicians in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. An automatic screw-locking mechanism, characterized in that, The device includes a mounting plate, a lifting drive mechanism, a screw-locking mechanism, and a guide mechanism. The screw-locking mechanism includes a longitudinal slide block slidably connected to the mounting plate along the Z-axis and an electric screwdriver. The electric screwdriver includes a screwdriver body detachably connected to the longitudinal slide block and a screwdriver bit detachably connected to the screwdriver body. The lifting drive mechanism is mounted on the mounting plate and drives the longitudinal slide block to move up and down. The guide mechanism includes a quick-change mounting base fixedly connected to the bottom of the mounting plate, a guide member, a limiting member, and a clamping arm assembly. The quick-change mounting base has a through-hole, and the screwdriver bit is movably disposed in the through-hole. The guide member is detachably connected to the bottom of the quick-change mounting base and has a longitudinal... The device includes a push hole, an inclined feed channel, and a limiting cavity. The bottom end of the inclined feed channel extends to the bottom of the guide member. The limiting cavity is connected to the inclined feed channel through a confluence window. The top and bottom ends of the longitudinal push hole are connected to the longitudinal through hole and the limiting cavity, respectively. The limiting member is hinged to the limiting cavity by a torsion spring and can close the confluence window. The clamping arm assembly includes two symmetrically arranged discharge clamping arms. Each discharge clamping arm includes an arm portion hinged to the side of the guide member and a discharge guide portion connected to the bottom end of the arm portion. A return spring abuts between the inner side of the arm portion and the side wall of the guide member. A discharge guide groove is provided on the discharge guide portion. When the two discharge guide grooves are closed, a discharge guide channel is formed.

2. The automatic screw-locking mechanism according to claim 1, characterized in that, The guiding mechanism also includes a wide pneumatic gripper disposed at the bottom of the mounting plate. A toggle lever is mounted on the gripper arm of the wide pneumatic gripper. A toggle block is fixedly connected to the outer side of the arm. A toggle guide groove is provided on the outer side surface of the toggle block. The toggle lever is movably disposed on the toggle guide groove.

3. An automatic screw-locking mechanism according to claim 2, characterized in that, The screw-locking mechanism further includes an air-blowing assembly, which comprises a longitudinal slider slidably connected to the mounting plate along the Z-axis, an air-blowing pipe fixedly connected to the bottom of the longitudinal slider, and a connecting pin fixedly connected to the bottom of the longitudinal slide block. The bottom of the longitudinal slider is provided with a first through hole that is clearance-fitted with the pin cap of the connecting pin, and the top of the longitudinal slider is provided with a second through hole that is clearance-fitted with the pin rod of the connecting pin. The pin cap and pin rod of the connecting pin are respectively movably disposed on the first through hole and the second through hole. A buffer spring is sleeved on the pin rod of the connecting pin, abutting against the longitudinal slide block and the longitudinal slider. The top of the longitudinal slider is provided with an insertion hole communicating with the interior of the air-blowing pipe. The screwdriver bit is inserted into the air-blowing pipe through the insertion hole and moves within the air-blowing pipe. The air-blowing pipe is movably disposed on the longitudinal through hole, and the longitudinal slider is provided with an air inlet communicating with the air-blowing pipe.

4. An automatic screw-locking mechanism according to claim 3, characterized in that, The lifting drive mechanism includes a first longitudinal cylinder and a second longitudinal cylinder, which are respectively fixedly connected to the longitudinal slide and the mounting plate. The output shaft of the first longitudinal cylinder is fixedly connected to the output shaft of the second longitudinal cylinder.

5. An automatic screw-locking mechanism according to claim 4, characterized in that, Two baffles are arranged side by side on the longitudinal slide block. The inner sidewall of the baffle is provided with a slot. A quick-release plate is provided between the two slots. A first positioning screw hole communicating with the slot is provided through the baffle. A first positioning bolt is connected to the first positioning screw hole. One end of the first positioning bolt abuts against the sidewall of the quick-release plate. A mounting hole is provided through the quick-release plate. The electric screwdriver body is fixedly connected to the quick-release plate and its output end passes through the mounting hole.

6. An automatic screw-locking mechanism according to claim 5, characterized in that, The input end of the inclined feed channel is provided with a mounting groove, and a feed cylinder is inserted into the mounting groove. The side wall of the guide is provided with a second positioning screw hole that communicates with the mounting groove. A second positioning bolt is connected to the second positioning screw hole, and one end of the second positioning bolt abuts against the side wall of the feed cylinder.

7. An automatic screw-locking mechanism according to claim 6, characterized in that, The discharge guide groove includes a first circular groove section, a conical groove section, and a second circular groove section connected sequentially from top to bottom.

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