Nut feeding machine and nut feeding method

Abstract

The invention belongs to the technical field of driven gear production, and particularly relates to a nut feeding machine for a driven gear screw turning assembly line and a nut feeding method. A nut feeding machine comprises a nut stock bin, the nut stock bin is connected with a nut supply chamber through a conveying line, a nut feeding mechanism is arranged in the nut feeding chamber and connected with the M end of a nut track, the N end of the nut track is connected with a nut feeding disc, and the nut feeding disc is rotationally connected into a nut feeding frame. At least one nut supply chamber is arranged on the edge of the nut feeding disc, an opening of the nut supply chamber is communicated with the N end of the nut track, and the outline of the nut supply chamber is matched with the outline of the nut. The device has the beneficial effects that compared with the prior art, the nut feeding machine is arranged, nuts can be continuously supplied, and convenience is provided for a driven gear screw turning assembly line.

Description

Technical Field

[0001] The invention belongs to the technical field of passive gear production, and in particular relates to a nut feeder used in a passive gear screw-tightening assembly line. Background Art

[0002] During the production of passive gears, carburizing is required. In order to prevent carburization of the threaded holes, the screw holes need to be blocked. When blocking, the screws need to be screwed into the screw holes.

[0003] At present, a suitable nut loader is needed in assembly line operations. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to design a passive gear screw-driving assembly line to reduce the dependence on manual labor.

[0005] The specific plan is as follows: A nut loader comprises a nut silo, which is connected to a nut supply chamber through a conveying line, a nut feeding mechanism is arranged in the feeding chamber, the nut feeding mechanism is connected to the M end of a nut track, the N end of the nut track is connected to a nut feeding plate, the nut feeding plate is rotatably connected in a nut feeding rack, at least one nut supply chamber is arranged on the edge of the nut feeding plate, the opening of the nut supply chamber is connected to the N end of the nut track, and the outer contour of the nut supply chamber matches the outer contour of the nut.

[0006] The nut feeding mechanism includes a feeding ring, which is vertically arranged and rotatably connected to one side of the feeding chamber close to the nut silo. A plurality of arc plates are provided on the inner wall of the feeding ring. A plurality of arc plates are provided on the inner wall of the feeding ring. The space between the inner wall of the feeding ring and the arc plate is a nut temporary storage chamber, and the M end of the nut track is inserted into the hollow part of the feeding ring.

[0007] A rotating shaft is rotatably connected in the feeding chamber, and a scraper is fixed on the rotating shaft. The scraper is located downstream of the feeding ring and above the nut track.

[0008] The nut track includes two track bodies, the space between the two track bodies is a nut conveying cavity, and a nut transmission belt is arranged in the nut conveying cavity at the M end of the nut track.

[0009] The track body at the nut transmission belt is a nut matching part, and the upper surface of the nut matching part is not lower than the upper surface of the nut of the nut.

[0010] The track body below the scraper comprises a nut matching part and a stud matching part, and the upper surface of the nut matching part is not lower than the upper surface of the nut of the nut.

[0011] A guide inclined plate is fixed on the bottom plate of the feeding chamber, and the lowest point of the guide inclined plate is higher than the lowest point of the hollow part of the feeding ring.

[0012] At least one pair of symmetrical nut supply chambers is arranged on the edge of the nut feeding tray, and when one of the nut supply chambers is matched with the nut track, the other nut supply chamber is matched with the suction chamber.

[0013] A nut feeding method, using the above-mentioned nut feeding machine, comprises the following steps: S30, the nuts in the nut silo continuously or intermittently enter the nut supply chamber through the conveying line, and sufficient nuts need to be supplied to the nut feeding mechanism; S31, the nut in step S30 passes through the guide inclined plate and enters the lowest point of the hollow part of the feeding ring; S32, at least one nut of step S31 enters the nut temporary storage chamber at the lowest part of the feeding ring; S33, the feeding ring rotates, and the nut is gradually raised until it reaches a high position and is thrown off; S34, the feeding ring rotates, and the dropped nuts enter the nut conveying cavity at the M end of the nut track; S35, after the nuts hit the pad, some nuts are separated from the nut conveying chamber, and these nuts fall into the nut temporary storage chamber at the lowest part of the material ring, and steps S33 and S34 are repeated; some nuts are stable in the nut conveying chamber; S36, the nut stabilized in the nut conveying chamber moves downstream driven by the nut transmission belt; S37, after the nut is separated from the nut transmission belt, the nut falls on the track body. At this time, the nut is divided into a nut with a correct posture and a nut with an incorrect posture; S38, the nut with the correct posture and the nut with the incorrect posture gradually move to the bottom of the scraper 423 under the continuous squeezing of the upstream nut; S39. Driven by external force, the rotating shaft and the scraper swing back and forth, and the scraper knocks the nut with incorrect posture off the track body, and the nut enters the lowest point of the hollow part of the feeding ring after being guided by the guide inclined plate; the position occupied by the nut is occupied by the upstream nut with correct posture, and finally the nuts with correct posture line up and move downstream, and the power of movement comes from the continuous squeezing of the upstream nuts; S40, the frontmost nut enters the nut supply chamber, the nut feeding plate rotates a certain angle, and the nut moves to the feeding station and can cooperate with the suction chamber; S41, end.

[0014] Beneficial effects: Compared with the prior art, the present invention is provided with a nut feeder, which can continuously supply nuts and provide convenience for the screw-tightening assembly line of passive gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the pipeline.

[0016] Figure 2 It is an enlarged schematic diagram of a screw tightening machine.

[0017] Figure 3 This is a top view of the screw tightening station.

[0018] Figure 4 It is a top view schematic diagram of the screw loader.

[0019] Figure 5 is a schematic diagram of a rotating drum.

[0020] Figure 6 yes Figure 4 Schematic cross-sectional view along line A-A.

[0021] Figure 7 It is a top view schematic diagram of the feeding track.

[0022] Figure 8 It is a side view schematic diagram of the feeding track.

[0023] Fig. 9 This is a cross-sectional diagram of the feeding track. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0025] like Figure 1 A passive gear screw-driving assembly line includes a conveyor belt 100, a gear feeding mechanism is provided upstream of the conveyor belt 100, a gear unloading mechanism is provided downstream of the conveyor belt 100, and a screw-driving machine 500 and a nut loader 400 are provided on the side thereof.

[0026] The gear feeding mechanism includes a transfer robot 200 and a posture adjustment mechanism 210. The posture adjustment mechanism 210 is located between the conveyor belt 100 and the transfer robot 200. The clamping part of the transfer robot 200 is an electromagnet 201. The posture adjustment mechanism 210 includes a frame A210. The top of the frame A210 is hinged with an intermediate plate 211. The intermediate plate 211 is smaller than the gear, and one edge of the intermediate plate 211 is fixed with a baffle 212.

[0027] The gear unloading mechanism includes a transfer robot 200 and a posture adjustment mechanism 210. The posture adjustment mechanism 210 is located between the conveyor belt 100 and the transfer robot 200. The clamping part of the transfer robot 200 is an electromagnet 201. The posture adjustment mechanism 210 includes a frame A210. The top of the frame A210 is hinged with an intermediate plate 211. The intermediate plate 211 is smaller than the gear, and one edge of the intermediate plate 211 is fixed with a baffle 212.

[0028] During the transportation of the passive gear, a loading trolley 900 and an unloading trolley 901 are used. The passive gears on the loading trolley 900 and the unloading trolley 901 are in a vertical position (that is, the axis of the passive gear is in a horizontal plane), and the passive gears at the screw tightening station are in a lying position (that is, the axis of the passive gear is in a vertical plane). In order to adjust the posture of the passive gear, a posture adjustment mechanism 210 is designed between the conveyor belt 100 and the transfer robot 200, thereby reducing the degree of freedom requirements for the manipulator of the transfer robot 200.

[0029] like Figure 2 The tail end of the robot arm 510 of the screw tightening machine 500 is fixed with a rotating motor 511, and the output shaft of the rotating motor 511 is fixed with a suction chamber 512, and the suction chamber 512 is used to fix a nut (see the figure mark 998), and the outer contour of the suction chamber 512 matches the outer contour of the nut of the nut.

[0030] like Figure 3 A screw tightening station 101 is provided at a certain section of the conveyor belt 100. The screw tightening station 101 is provided with two V-frames: a first V-frame 102 and a second V-frame 103. The first V-frame 102 is fixed to the screw tightening station 101. The screw tightening station 101 fixes the cylinder end of the hydraulic cylinder 110. The piston end of the hydraulic cylinder 110 is fixed to the second V-frame 103 through a connecting seat 111. The gear (see the reference numeral 912) is located between the two V-frames.

[0031] like Figure 3-4 The nut loader 400 includes a nut silo 410, which is connected to a nut supply chamber 420 via a conveying line 411. A nut loading mechanism 430 is provided in the loading chamber 420. The nut loading mechanism 430 is connected to the M end of a nut track 440. The N end of the nut track 440 is connected to a nut loading tray 451. The nut loading tray 451 is rotatably connected to a nut loading rack 450. At least one nut supply chamber 452 is provided on the edge of the nut loading tray 451. The opening of the nut supply chamber 452 is connected to the N end of the nut track 440. The outer contour of the nut supply chamber 452 matches the outer contour of the nut.

[0032] like Figure 4 The nut feeding mechanism 430 includes a feeding ring 431, which is vertically arranged and rotatably connected to a side of the feeding chamber 420 close to the nut silo 410. A plurality of arc plates 432 are provided on the inner wall of the feeding ring 431. A plurality of arc plates 432 are provided on the inner wall of the feeding ring 431. The space between the inner wall of the feeding ring 431 and the arc plates 432 is a nut temporary storage chamber 4321. The M end of the nut track 440 is inserted into the hollow part of the feeding ring 431.

[0033] like Figure 4At least one pair of symmetrical nut supply chambers 452 are provided on the edge of the nut loading tray 451 . When one of the nut supply chambers 45 cooperates with the nut track 440 , the other nut supply chamber 45 cooperates with the suction chamber 512 .

[0034] like Figure 6 A rotating shaft 422 is rotatably connected in the feeding chamber 420 , and a scraper 423 is fixed to the rotating shaft 422 . The scraper 423 is located downstream of the feeding ring 431 and above the nut track 440 .

[0035] like Figure 7-8 The nut track 440 includes two track bodies 4404 , the space between the two track bodies 4404 is a nut conveying chamber 4403 , and a nut transmission belt 441 is provided in the nut conveying chamber 4403 at the M end of the nut track 440 .

[0036] like Figure 7-8 In order to facilitate the storage of the nut, the track body 4404 at the nut transmission belt 441 is a nut matching part 4401, and the upper surface of the nut matching part 4401 is not lower than the upper surface of the nut of the nut (see the figure mark 995).

[0037] like Figure 7-9 The track body 4404 below the scraper 423 includes a nut fitting portion 4401 and a stud fitting portion 4402 , and the upper surface of the nut fitting portion 4401 is not lower than the upper surface of the nut of the nut (see reference numeral 995 ).

[0038] like Figure 6 A guide inclined plate 421 is fixed on the bottom plate of the loading chamber 420 , and the lowest point of the guide inclined plate 421 is higher than the lowest point of the hollow part of the loading ring 431 .

[0039] The specific working process is: like Figure 1-3 , the passive gear screwing line includes the following steps: S10, the loading trolley 900 and the unloading trolley 901 are both placed in place.

[0040] S11 . The electromagnet 201 of the transfer robot 200 of the gear feeding mechanism moves to above the gear (see reference numeral 901 ) of the feeding vehicle 900 . The electromagnet 201 is energized and sucks up the gear (see reference numeral 910 ).

[0041] S12, the middle plate 211 of the gear feeding mechanism rotates to a vertical posture, the electromagnet 201 of the transfer robot 200 of the gear feeding mechanism moves to above the baffle 212, the electromagnet 201 loses power, and the gear (see reference numeral 911) falls on the middle plate 211 and the baffle 212.

[0042] S13, the middle plate 211 rotates to a horizontal posture, the gear is also in a horizontal posture, the electromagnet 201 is energized and sucks up the horizontal gear, the electromagnet 201 of the transfer robot 200 of the gear feeding mechanism runs to the top of the conveyor belt 100, the electromagnet 201 loses power, and the gear falls on the conveyor belt 100.

[0043] S14, the conveyor belt 100 is started. Under the conveyance of the conveyor belt 100, the second V-shaped frame 103 is located at the far end, the gear (see reference numeral 912) runs to the screwing station 101, and the conveyor belt 100 is closed.

[0044] S15 , the piston end of the hydraulic cylinder 110 extends, so that the second V-frame 103 moves to the proximal end, and the gear (see reference numeral 912 ) is clamped between the second V-frame 103 and the first V-frame 102 .

[0045] S16, the nut loader 400 conveys the nut (see reference numeral 999), the screw tightening machine 500 controls the suction chamber 512 to move above the nut (see reference numeral 999), and the suction chamber 512 sucks the nut (see reference numeral 998).

[0046] S17, the screwing machine 500 controls the suction chamber 512 to move above the target screw hole of the gear (see reference numeral 912), and the rotary motor 511 rotates to drive the suction chamber 512 and the nut (see reference numeral 998) to be screwed into the target screw hole.

[0047] S18. Repeat steps S16-S17 until all the screw holes of the gear (see reference numeral 912) are completed.

[0048] S19, the piston end of the hydraulic cylinder 110 contracts to release the gear (see reference numeral 912).

[0049] S20 , the conveyor belt 100 is started, and under the transport of the conveyor belt 100 , the gear (see reference numeral 913 ) gradually reaches the rear end of the conveyor belt 100 .

[0050] S21, the electromagnet 201 of the transfer robot 200 of the gear unloading mechanism moves to above the tail end of the conveyor belt 100, and the electromagnet 201 is energized to suck up the gear.

[0051] S22, the middle plate 211 of the gear unloading mechanism rotates to a horizontal position, the electromagnet 201 loses power, and the gear is placed on the middle plate 211.

[0052] S23 , the middle plate 211 of the gear unloading mechanism rotates to a vertical posture, and the gear (see reference numeral 913 ) is also in a vertical posture and is stable on the middle plate 211 and the baffle 212 .

[0053] S24 , the electromagnet 201 of the transfer robot 200 of the gear unloading mechanism is energized to suck up the gear (see reference numeral 913 ).

[0054] S25, the electromagnet 201 of the transfer robot 200 of the gear unloading mechanism runs together with the gear (see reference numeral 913 ) to above the empty position of the gear of the unloading trolley 901 , the electromagnet 201 loses power, and the gear (see reference numeral 913 ) is placed in the unloading trolley 901 .

[0055] S26. End.

[0056] like Figure 4-9 The nut feeder 400 includes the following steps when working: S30, the nuts in the nut silo 410 continuously or intermittently enter the nut supply chamber 420 through the conveying line 411, and the nut feeding mechanism 430 needs to be supplied with sufficient nuts.

[0057] S31, such as Figure 6 The nut (see reference numeral 994 ) of step S30 passes through the guide ramp 421 and enters the lowest point of the hollow portion of the loading ring 431 .

[0058] S32, such as Figure 5 At least one nut (see reference numeral 991 ) of step S31 enters the nut temporary storage chamber 4321 at the lowest point of the loading ring 431 .

[0059] S33, such as Figure 5 The feeding ring 431 rotates, and the nut (see reference numeral 992 ) is gradually raised until it reaches a high position and is dropped.

[0060] S34, such as Figure 5 The feeding ring 431 rotates, and the dropped nuts (see reference numeral 993 ) enter the nut conveying chamber 4403 at the M end of the nut track 440 .

[0061] S35, such as Figure 5 and Figure 7 After the nuts hit the pad 443, some nuts will escape from the nut conveying chamber 4403 (due to reasons such as being too offset in position), and these nuts will fall into the nut temporary storage chamber 4321 at the lowest point of the material ring 431, and steps S33 and S34 will be repeated; some nuts will remain stable in the nut conveying chamber 4403.

[0062] S36. The nut stabilized in the nut conveying chamber 4403 moves downstream driven by the nut transmission belt 441.

[0063] S37, such as Figure 6After the nut is separated from the nut transmission belt 441, the nut falls on the track body 4404. At this time, the nut is divided into a nut with a correct posture (see the reference numeral 995) and a nut with an incorrect posture (see the reference numeral 994).

[0064] The correct nut is: Fig. 9 The nut part and the stud part of the nut are respectively clamped by the nut fitting part 4401 and the stud fitting part 4402.

[0065] A nut with incorrect posture refers to a nut whose posture does not meet the requirements mentioned above.

[0066] S38, the nut with the correct posture (see reference numeral 995) and the nut with the incorrect posture (see reference numeral 994) are gradually moved to the bottom of the scraper 423 under the continuous extrusion of the upstream nut (that is, step S36), S39, such as Figure 6 Driven by external force, the rotating shaft 422 and the scraper 423 swing back and forth, and the scraper 423 knocks the nut with incorrect posture (see the figure mark 994) off the track body 4404, and the nut enters the lowest point of the hollow part of the feeding ring 431 after being guided by the guide inclined plate 421; the position occupied by the nut is occupied by the upstream nut with correct posture (see the figure mark 995), and finally the nuts with correct posture (see the figure mark 995) are lined up and move downstream, and the power of the movement comes from the continuous squeezing of the upstream nut (that is, step S36).

[0067] S40, such as Figure 4 The frontmost nut enters the nut supply chamber 452 , and the nut loading plate 451 rotates a certain angle (such as 180°). The nut (see the figure mark 999 ) moves to the loading station and can cooperate with the suction chamber 512 .

[0068] S41, end.

[0069] For other details, please refer to the prior art and will not be described in detail.

[0070] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A nut loader, comprising a nut hopper (410), characterized in that: The nut material bin (410) is connected to the nut supply chamber (420) via a conveying line (411); a nut supply mechanism (430) is provided in the supply chamber (420); the nut supply mechanism (430) is connected to the M end of a nut track (440); the N end of the nut track (440) is connected to a nut supply tray (451); the nut supply tray (451) is rotatably connected to a nut supply rack (450); at least one nut supply chamber (452) is provided on the edge of the nut supply tray (451); an opening of the nut supply chamber (452) is communicated with the N end of the nut track (440); and an outer contour of the nut supply chamber (452) matches an outer contour of a nut.

2. The nut feeding machine according to claim 1, characterized in that: The nut feeding mechanism (430) comprises a feeding ring (431), which is arranged vertically and is rotatably connected to a side of the feeding chamber (420) close to the nut bin (410). A plurality of arc plates (432) are provided on the inner wall of the feeding ring (431). A plurality of arc plates (432) are provided on the inner wall of the feeding ring (431). The space between the inner wall of the feeding ring (431) and the arc plates (432) is a nut temporary storage chamber (4321). The M end of the nut track (440) is inserted into the hollow portion of the feeding ring (431).

3. The nut feeding machine according to claim 2, characterized in that: A rotating shaft (422) is rotatably connected in the feeding chamber (420), and a scraper (423) is fixed to the rotating shaft (422). The scraper (423) is located downstream of the feeding ring (431) and above the nut track (440).

4. The nut feeding machine according to claim 3, characterized in that: The nut track (440) comprises two track bodies (4404), the space between the two track bodies (4404) is a nut conveying chamber (4403), and a nut transmission belt (441) is provided in the nut conveying chamber (4403) at the M end of the nut track (440).

5. The nut feeding machine according to claim 4, characterized in that: The track body (4404) at the nut transmission belt (441) is a nut matching portion (4401), and the upper surface of the nut matching portion (4401) is not lower than the upper surface of the nut of the nut.

6. The nut feeding machine according to claim 5, characterized in that: The track body (4404) below the scraper (423) includes a nut matching portion (4401) and a stud matching portion (4402), and the upper surface of the nut matching portion (4401) is not lower than the upper surface of the nut of the nut.

7. The nut feeding machine according to claim 6, characterized in that: A flow guide inclined plate (421) is fixed on the bottom plate of the loading chamber (420), and the lowest point of the flow guide inclined plate (421) is higher than the lowest point of the hollow part of the loading ring (431).

8. The nut feeding machine according to claim 7, characterized in that: At least one pair of symmetrical nut supply chambers (452) is provided on the edge of the nut loading tray (451), wherein when one of the nut supply chambers (45) cooperates with the nut track (440), the other nut supply chamber (45) cooperates with the suction chamber (512).

9. A nut feeding method, characterized in that: Using the nut feeder as claimed in claim 8 comprises the following steps: S30, the nuts in the nut bin (410) continuously or intermittently enter the nut supply chamber (420) through the conveying line (411), and sufficient nuts need to be supplied to the nut feeding mechanism (430); S31, the nut in step S30 passes through the guide inclined plate (421) and enters the lowest point of the hollow part of the feeding ring (431); S32, at least one nut of step S31 enters into the nut temporary storage chamber (4321) at the lowest part of the feeding ring (431); S33, the feeding ring (431) rotates, and the nut is gradually raised until it reaches a high position and is dropped; S34, the feeding ring (431) rotates, and the dropped nut enters the nut conveying cavity (4403) at the M end of the nut track (440); S35, after the nuts hit the cushion block (443), some nuts are separated from the nut conveying chamber (4403), and these nuts fall into the nut temporary storage chamber (4321) at the lowest part of the material ring (431), and steps S33 and S34 are repeated; some nuts are stable in the nut conveying chamber (4403); S36, the nut stabilized in the nut conveying chamber (4403) moves downstream driven by the nut transmission belt (441); S37, after the nut is separated from the nut transmission belt (441), the nut falls on the track body (4404), at which time the nut is divided into a nut with a correct posture and a nut with an incorrect posture; S38, the nut with the correct posture and the nut with the incorrect posture gradually move to the bottom of the scraper 423 under the continuous squeezing of the upstream nut; S39. Driven by external force, the rotating shaft (422) and the scraper (423) swing back and forth, and the scraper (423) knocks the nut with incorrect posture off the track body (4404). The nut is guided by the guide inclined plate (421) and enters the lowest point of the hollow part of the feeding ring (431). The position occupied by the nut is occupied by the upstream nut with correct posture. Finally, the nuts with correct posture are arranged in a queue and move downstream. The power of the movement comes from the continuous squeezing of the upstream nuts. S40, the frontmost nut enters the nut supply chamber (452), the nut loading plate (451) rotates a certain angle, and the nut moves to the loading station and can cooperate with the suction chamber (512); S41, end.

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