Automatic nail feeding mechanism

Abstract

An automatic screw feeding mechanism solves the problems that an existing manual screw feeding operation mode is large in labor intensity, low in production efficiency, prone to neglected feeding and wrong feeding, difficult to meet quality requirements and incapable of adapting to automatic production. Comprising a bottom plate, a sliding seat supporting base is arranged on the front portion of the bottom plate, a screw feeding longitudinal sliding seat above the sliding seat supporting base is connected with a fixed guide block in a sliding mode through two sets of sliding seat longitudinal moving guide rails, and a fixed table lifting mechanism is arranged between a screw fixing table above the screw feeding longitudinal sliding seat and the screw feeding longitudinal sliding seat. The guide rail moving connecting frame is connected with a guide rail driving motor; a screw feeding mechanism above the screw fixing table is arranged on the fixed connecting cross beam in a sliding mode, and a screw feeding transverse moving frame is connected with a moving frame driving motor. The device is reasonable in design, compact in structure, low in labor intensity, high in production efficiency, good in safety and convenient to operate, can avoid the situation that the production takt is affected due to the fact that the number of installed bolts is large, and effectively prevents neglected installation and wrong installation of the bolts.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile sheet metal part processing, and particularly relates to an automatic bolt feeding mechanism. BACKGROUND

[0002] At present, in the production of automobile sheet metal parts, for the plate parts with a large number of bolts / nuts, manual screwing is mostly adopted, which is labor-intensive, low in production efficiency, and affects the production rhythm; moreover, the situation of missed loading and incorrect loading often occurs, and it is difficult to meet the quality requirements. In addition, the existing processing method cannot adapt to the automatic production of automobile plate parts. Therefore, it is necessary to improve the method and device for installing screws of the automobile sheet metal parts. SUMMARY

[0003] The utility model discloses to the above problem, provide a kind of automatic bolt feeding mechanism, which can avoid the situation that the number of installed bolts is large and affects production rhythm, saves manpower, and is low in labor intensity, can effectively prevent the missed loading and incorrect loading of bolt, high in production efficiency, and good in safety.

[0004] The technical scheme adopted by the utility model is as follows: the automatic bolt feeding mechanism comprises a bottom plate, characterized in that: a sliding seat support base is arranged at the front of the bottom plate, the lower side of the sliding seat support base is fixedly connected to the upper side of the bottom plate through a plurality of groups of base support columns, an upper bolt longitudinal sliding seat is arranged above the sliding seat support base, the lower side of the upper bolt longitudinal sliding seat is slidably connected to the upper side of the sliding seat support base through two groups of sliding seat longitudinal movement guide rails and fixed guide blocks, a screw fixing table is further arranged above the upper bolt longitudinal sliding seat, and a fixing table lifting mechanism is arranged between the screw fixing table and the upper bolt longitudinal sliding seat; the rear ends of the two groups of sliding seat longitudinal movement guide rails are connected through a guide rail movement connecting frame, and the lower part of the guide rail movement connecting frame is connected to the output end of a guide rail driving motor arranged at the rear of the bottom plate through a transmission mechanism; a bolt feeding mechanism vertically arranged above the screw fixing table is slidably arranged on a fixed connection cross beam through a bolt feeding transverse movement frame, and the rear side of the bolt feeding transverse movement frame is connected to the output end of a movement frame driving motor arranged at the end of the fixed connection cross beam through a transmission mechanism.

[0005] The screw fixing table comprises a fixing table flat plate, a plurality of groups of screw bearing bosses corresponding to the positions of the screw installation positions to be loaded are arranged on the upper side of the fixing table flat plate, and a screw positioning magnetic pin vertically arranged in the middle of each screw bearing boss is further arranged. The screw feeding mechanism feeds the screws to be loaded to the corresponding positions of the screw bearing bosses on the fixing table flat plate, and the screw positioning magnetic pin is used to assist in adsorbing and positioning the screws to be loaded.

[0006] The fixed platform lifting mechanism includes a vertically arranged fixed platform lifting cylinder. The upper telescopic end of the fixed platform lifting cylinder is connected to the lower side of the fixed platform plate of the screw fixing platform, and the lower cylinder body of the fixed platform lifting cylinder is fixedly connected to the upper nail longitudinal sliding seat. Furthermore, several sets of vertically arranged lifting guide sleeves are provided between the fixed platform plate and the upper nail longitudinal sliding seat, and around the fixed platform lifting cylinder. Lifting return springs are installed inside the lifting guide sleeves. The extension and retraction of the fixed platform lifting cylinder drives the screw fixing platform to reciprocate along the lifting guide sleeves, thereby facilitating the screw-bearing boss on the screw fixing platform to receive the screws to be installed from the feeding mechanism at the rising position, improving the stability and reliability of screw placement. Moreover, when the upper nail longitudinal sliding seat subsequently moves forward to below the upper mold of the riveting machine, the screw fixing platform, which rises with the fixed platform lifting mechanism, lifts several screws placed on the fixed platform plate at different positions and installs them into the upper mold of the riveting machine, thus replacing manual nail installation.

[0007] The nail feeding mechanism includes a vertically arranged nail feeding sleeve, which is fixedly connected to a horizontally moving nail feeding frame via a nail sleeve fixing bracket. The upper inlet of the nail feeding sleeve is connected to the lower end of a nail feeding riser, which is connected to the horizontally moving nail feeding frame via a riser connecting bracket. The upper end of the riser is also connected to a screw conveyor via a nail feeding pipeline. The screw conveyor and the nail feeding pipeline are used to feed the screws to be installed one by one into the nail feeding sleeve of the nail feeding mechanism, and the screws are positioned and lowered by the nail feeding sleeve to the respective sets of screw-bearing bosses on the screw fixing platform.

[0008] The transmission mechanism connected to the output ends of the guide rail drive motor and the moving frame drive motor is a lead screw transmission mechanism. The drive motor drives the lead screw transmission mechanism to operate, thereby realizing the reciprocating movement of the guide rail moving connecting frame and the nail feeding transverse moving frame, respectively.

[0009] The guide rail moving connecting frame is arranged in a connecting frame sliding slot on the base plate, while the nail feeding transverse moving frame is arranged in a moving frame sliding slot on the fixed connecting beam; dust covers are also provided on the connecting frame sliding slot and the moving frame sliding slot respectively. The connecting frame sliding slot and the moving frame sliding slot are used to improve the stability of the guide rail moving connecting frame and the nail feeding transverse moving frame as they reciprocate with the drive motor.

[0010] Both ends of the connecting frame sliding slot and the moving frame sliding slot are respectively provided with optical sensor limiters. These optical sensor limiters are used to limit the movement positions of the guide rail moving connecting frame and the nail feeding transverse moving frame, respectively.

[0011] The beneficial effects of this utility model are as follows: Because this utility model uses a base plate with a sliding support base at the front, and an upper nail longitudinal sliding seat is provided above the sliding support base, the lower side of the upper nail longitudinal sliding seat is slidably connected to a fixed guide block via two sets of sliding longitudinal moving guide rails; a screw fixing platform is provided above the upper nail longitudinal sliding seat, and a fixed platform lifting mechanism is provided between the screw fixing platform and the upper nail longitudinal sliding seat; the rear ends of the two sets of sliding longitudinal moving guide rails are connected via a guide rail moving connecting frame, and the lower part of the guide rail moving connecting frame is connected to a guide rail drive motor via a transmission mechanism; a vertically arranged nail feeding mechanism is provided above the screw fixing platform, and the nail feeding mechanism is slidably mounted on a fixed connecting beam via a nail feeding transverse moving frame, the rear side of the nail feeding transverse moving frame is connected to a moving frame drive motor via a transmission mechanism. Therefore, its design is reasonable and its structure is compact. It can avoid the situation where a large number of bolts affects the production cycle, saves manpower, reduces labor intensity, effectively prevents bolt omissions and incorrect installations, reduces the deformation of sheet metal parts, improves product quality, and has high production efficiency, good safety, and convenient operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 A-direction view.

[0014] Figure 3 yes Figure 1 A schematic diagram of a nail feeding mechanism.

[0015] Figure 4 yes Figure 1 A schematic diagram of a connection structure between a screw fixing platform and an upper screw longitudinal sliding seat.

[0016] The numbers in the diagram are explained as follows: 1. Base plate; 2. Slide support base; 3. Upper nail longitudinal sliding seat; 4. Screw fixing platform; 5. Fixing platform lifting mechanism; 6. Fixing guide block; 7. Slide longitudinal moving guide rail; 8. Guide rail moving connecting frame; 9. Connecting frame sliding slot; 10. Guide rail drive motor; 11. Nail feeding mechanism; 12. Nail feeding transverse moving frame; 13. Fixing connecting beam; 14. Moving frame drive motor; 15. Screw to be installed; 16. Screw transmission mechanism; 17. Photosensitive limiter; 18. Dustproof cover; 19. Nail sleeve fixing frame; 20. Nail feeding sleeve; 21. Nail feeding riser; 22. Riser connecting frame; 23. Moving frame sliding slot; 24. Frame fixing side plate; 25. Base support column; 26. Fixing platform plate; 27. Screw bearing boss; 28. Screw positioning magnetic pin; 29. ​​Fixing platform lifting cylinder; 30. Lifting guide sleeve. Detailed Implementation

[0017] according to Figures 1 to 4The specific structure of this utility model is described in detail. The automatic nail-attaching mechanism includes a base plate 1. A slide support base 2 is fixedly mounted on the front of the base plate 1. The lower side of the slide support base 2 is fixedly connected to the upper side of the base plate 1 via several sets of base support columns 25. A nail-attaching longitudinal sliding seat 3 is mounted above the slide support base 2. The lower side of the nail-attaching longitudinal sliding seat 3 is slidably connected to a fixed guide block 6 mounted on the upper side of the slide support base 2 via two sets of longitudinally arranged slide longitudinal moving guide rails 7. Furthermore, the rear ends of the two sets of slide longitudinal moving guide rails 7 are connected via a guide rail moving connecting frame 8. The lower part of the guide rail moving connecting frame 8 is connected to the output end of a guide rail drive motor 10 located at the rear of the base plate 1 via a screw drive mechanism 16. The guide rail drive motor 10 drives the screw drive mechanism 16 to rotate, thereby realizing the longitudinal (back-and-forth) reciprocating movement of the guide rail moving connecting frame 8, the two sets of slide longitudinal moving guide rails 7, and the nail-attaching longitudinal sliding seat 3.

[0018] A screw fixing platform 4 is provided above the upper screw longitudinal sliding seat 3, and a fixing platform lifting mechanism 5 is also provided between the screw fixing platform 4 and the upper screw longitudinal sliding seat 3. The screw fixing platform 4 is composed of a fixing platform plate 26. Several sets of screw bearing protrusions 27 are provided on the upper side of the fixing platform plate 26, and vertically arranged screw positioning magnetic pins 28 are provided in the middle of the screw bearing protrusions 27. Thus, the screws 15 to be installed, delivered by the screw feeding mechanism 11, are positioned on the corresponding screw bearing protrusions 27 on the fixing platform plate 26, and the screw positioning magnetic pins 28 are used to assist in the adsorption and positioning of the screws 15 to be installed.

[0019] Furthermore, the fixed platform lifting mechanism 5 includes a vertically arranged fixed platform lifting cylinder 29. The upper telescopic end of the fixed platform lifting cylinder 29 is connected to the lower side of the fixed platform plate 26 of the screw fixing platform 4, and the lower cylinder body of the fixed platform lifting cylinder 29 is fixedly connected to the upper nail longitudinal sliding seat 3. At the same time, several sets of vertically arranged lifting guide sleeves 30 are also provided between the fixed platform plate 26 and the upper nail longitudinal sliding seat 3, and around the fixed platform lifting cylinder 29. The lifting guide sleeves 30 are equipped with lifting return springs. Thus, by extending and retracting the fixed platform lifting cylinder 29, the screw fixing platform 4 is driven to reciprocate up and down along the lifting guide sleeves 30, so that the screw bearing protrusion 27 on the screw fixing platform 4 can receive the screws 15 to be installed from the screw feeding mechanism 11 in the rising position, thereby improving the stability and reliability of screw placement. Furthermore, when the longitudinal sliding seat 3 moves forward to the lower part of the upper mold of the riveting machine, the screw fixing table 4, which rises with the fixing table lifting mechanism 5, lifts up several screws 15 placed on the fixing table plate 26 in different positions and installs them into the upper mold of the riveting machine, thereby replacing manual nailing.

[0020] Above the screw fixing platform 4, there is also a nail feeding mechanism 11. The nail feeding mechanism 11 includes a vertically arranged nail feeding sleeve 20. The nail feeding sleeve 20 is fixedly connected to the nail feeding transverse moving frame 12 through the nail sleeve fixing frame 19. The upper end inlet of the nail feeding sleeve 20 is connected to the lower end of the nail feeding riser 21. The nail feeding riser 21 is connected to the nail feeding transverse moving frame 12 through the riser connecting frame 22. The upper end of the nail feeding riser 21 is also connected to the screw conveyor through the nail feeding pipeline. Meanwhile, the lateral moving frame 12 for feeding nails is also slidably mounted on the fixed connecting beam 13. The two ends of the fixed connecting beam 13 are respectively fixedly connected to the frame of the production equipment through the fixed side plate 24 of the frame. The rear side of the lateral moving frame 12 for feeding nails is connected to the output end of the moving frame drive motor 14 located at the end of the fixed connecting beam 13 through the screw transmission mechanism 16. The moving frame drive motor 14 drives the screw transmission mechanism 16 to operate, thereby realizing the lateral (left and right) reciprocating movement of the lateral moving frame 12 for feeding nails and the nail feeding mechanism 11. Furthermore, the screws to be installed 15 are transported one by one into the nail feeding sleeve 20 of the nail feeding mechanism 11 by the screw conveyor and the nail feeding pipeline, so that the screws to be installed 15 fall through the nail feeding sleeve 20 and are positioned and dropped into the positions of the screw bearing bosses 27 on the screw fixing table 4.

[0021] In addition, the guide rail moving connecting frame 8 is arranged in the connecting frame sliding slot 9 provided on the base plate 1, and the nail feeding transverse moving frame 12 is arranged in the moving frame sliding slot 23 provided on the fixed connecting beam 13. Dustproof covers 18 are also provided on the connecting frame sliding slot 9 and the moving frame sliding slot 23 respectively. Therefore, the connecting frame sliding slot 9 and the moving frame sliding slot 23 are used to improve the stability of the guide rail moving connecting frame 8 and the nail feeding transverse moving frame 12 as they reciprocate with the drive motor. Furthermore, photosensitive limiters 17 are provided at both ends of the connecting frame sliding slot 9 and the moving frame sliding slot 23 respectively, thereby limiting the movement position of the guide rail moving connecting frame 8 and the nail feeding transverse moving frame 12 respectively.

[0022] When the automatic nail feeding mechanism is in use, firstly, the guide rail drive motor 10 drives the two sets of longitudinal sliding guide rails 7 connected to the guide rail moving connecting frame 8, as well as the nail feeding longitudinal sliding seat 3 and the screw fixing table 4 on them, to move back and forth in a small range in the longitudinal direction; at the same time, the moving frame drive motor 14 drives the nail feeding transverse moving frame 12 and the nail feeding mechanism 11 on it to move left and right in the transverse direction on the fixed connecting beam 13, so that the nail feeding sleeve 20 of the nail feeding mechanism 11 is aligned with the position of the corresponding screw bearing boss 27 on the screw fixing table 4. After the feeding sleeve 20 of the feeding mechanism 11 moves into position, the lifting cylinder 29 of the fixed platform extends, thereby driving the screw fixing platform 4 to rise along the lifting guide sleeve 30, so that the screw-bearing boss 27 on the screw fixing platform 4 is closer to the feeding sleeve 20 above. Then, the screw to be installed 15 is transported into the feeding sleeve 20 of the feeding mechanism 11 by the screw conveyor and the feeding pipeline, and the screw to be installed 15 is positioned and dropped on the screw fixing platform 4 at the corresponding position of the screw-bearing boss 27 through the feeding sleeve 20. The screw to be installed 15 is then assisted in adsorption and positioning by the screw positioning magnetic pin 28. After the screw to be installed 15 is placed on the screw-bearing boss 27, the lifting cylinder 29 of the fixed platform is retracted, driving the screw fixing platform 4 to descend, preparing for the next feeding movement.

[0023] Repeat the steps described above: the longitudinal sliding seat 3 and the screw fixing table 4 move back and forth; the screw feeding mechanism 11 moves left and right on the fixed connecting beam 13 (moving the screw feeding sleeve 20 of the screw feeding mechanism 11 to the screw-to-installation position); and the screws 15 to be installed fall to the corresponding screw-bearing boss 27 via the screw feeding sleeve 20. This process vertically places several (e.g., six) screws 15 onto the corresponding positions on the screw fixing table 4. Then, the guide rail drive motor 10 drives the two sets of longitudinal sliding guide rails 7 forward and significantly, thereby moving the longitudinal sliding seat 3, the screw fixing table 4, and the screws 15 placed on it forward together to below the upper mold of the riveting machine. Subsequently, the screw fixing table 4 is raised using the fixed table lifting cylinder 29, lifting the screws 15 placed on the screw fixing table 4 in different positions and installing them into the upper mold of the riveting machine. Finally, the riveting machine is started, and the screws 15 in the upper mold are installed onto the sheet metal.

Claims

1. An automatic stapling mechanism comprising a base plate (1), characterized in that: The front part of the bottom plate (1) is provided with a sliding support base (2), the lower side of the sliding support base (2) is fixedly connected with the upper side of the bottom plate (1) through a plurality of groups of base support columns (25), the upper side of the sliding support base (2) is provided with an upper nail longitudinal sliding seat (3), the lower side of the upper nail longitudinal sliding seat (3) is slidably connected with the upper side of the sliding support base (2) through two groups of sliding longitudinal moving guide rails (7) and fixed guide blocks (6), the upper side of the upper nail longitudinal sliding seat (3) is further provided with a screw fixing table (4), and the screw fixing table (4) and the upper nail longitudinal sliding seat (3) are provided with a fixing table lifting mechanism (5); and the rear ends of the two groups of sliding longitudinal moving guide rails (7) are connected through guide rail moving connecting frames (8), and the lower parts of the guide rail moving connecting frames (8) are connected with the output ends of guide rail driving motors (10) arranged at the rear part of the bottom plate (1) through transmission mechanisms; the upper side of the screw fixing table (4) is provided with a vertically arranged nail feeding mechanism (11), the nail feeding mechanism (11) is slidably arranged on a fixedly connected cross beam (13) through a nail feeding transverse moving frame (12), and the rear side of the nail feeding transverse moving frame (12) is connected with the output end of a moving frame driving motor (14) arranged at the end of the fixedly connected cross beam (13) through a transmission mechanism.

2. The automatic threading mechanism of claim 1, wherein: The screw fixing table (4) comprises a fixing table flat plate (26), the upper side of the fixing table flat plate (26) is provided with a plurality of groups of screw bearing bosses (27) corresponding in position to the screw mounting positions, and the middle parts of the screw bearing bosses (27) are further respectively provided with vertically arranged screw positioning magnetic pins (28).

3. The automatic threading mechanism of claim 2, wherein: The fixing table lifting mechanism (5) comprises a vertically arranged fixing table lifting cylinder (29), the telescopic end of the upper part of the fixing table lifting cylinder (29) is connected with the lower side of the fixing table flat plate (26) of the screw fixing table (4), and the cylinder body of the lower part of the fixing table lifting cylinder (29) is fixedly connected with the upper nail longitudinal sliding seat (3); and the periphery of the fixing table lifting cylinder (29) is further provided with a plurality of groups of vertically arranged lifting guide sleeves (30) between the fixing table flat plate (26) and the upper nail longitudinal sliding seat (3), and the lifting guide sleeves (30) are provided with lifting return springs inside.

4. The automatic threading mechanism of claim 1, wherein: The nail feeding mechanism (11) comprises a vertically arranged nail feeding sleeve (20), the nail feeding sleeve (20) is fixedly connected with the nail feeding transverse moving frame (12) through a nail sleeve fixing frame (19), the upper end inlet of the nail feeding sleeve (20) is connected with the lower end of a nail conveying vertical pipe (21), the nail conveying vertical pipe (21) is connected with the nail feeding transverse moving frame (12) through a vertical pipe connecting frame (22), and the upper end of the nail conveying vertical pipe (21) is further connected with a screw conveyor through a nail conveying pipeline.

5. The automatic threading mechanism of claim 1, wherein: The transmission mechanisms connected with the output ends of the guide rail driving motor (10) and the moving frame driving motor (14) are lead screw transmission mechanisms (16).

6. The automatic threading mechanism of claim 1, wherein: The guide rail moving connecting frame (8) is arranged in the connecting frame sliding clamping groove (9) arranged on the bottom plate (1), and the nail feeding transverse moving frame (12) is arranged in the moving frame sliding clamping groove (23) arranged on the fixed connecting beam (13); the connecting frame sliding clamping groove (9) and the moving frame sliding clamping groove (23) are further respectively provided with dustproof cover plates (18).

7. The automatic threading mechanism of claim 6, wherein: The connecting frame sliding clamping groove (9) and the moving frame sliding clamping groove (23) are further respectively provided with light sensing limiters (17) at two ends.

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