Automatic feeding and pressing rivet nut in-mold riveting equipment

Abstract

The invention relates to the technical field of nuts, and discloses automatic feeding and rivet nut in-mold riveting equipment which comprises a workbench, a supporting frame is fixedly connected to the back of the workbench, two vibration discs are installed at the top of the supporting frame, and a driving assembly is installed at the top of the supporting frame. According to the automatic feeding device, the vibration disc is arranged, the vibration disc is started, the vibration disc automatically conveys nuts into the feeding rail through vibration, the nuts are moved into the guide groove, automatic feeding is achieved, the adjusting air cylinder is arranged, after the nuts are moved into the guide groove, the adjusting air cylinder is started, the adjusting air cylinder drives the moving plate to move towards the back, and therefore the nuts can be automatically fed. When the nut is conveyed, the clamping groove is communicated with the guide groove, the vibration disc continues to convey the nut at the moment, the nut enters the guide groove, the adjusting air cylinder is reset, the clamping groove and the guide groove are staggered, meanwhile, the clamping groove is communicated with the discharging opening, the nut falls on the containing plate and is limited and controlled by the limiting rod, and transferring of the nut is achieved.

Description

Technical Field

[0001] This invention relates to the field of nut technology, and more particularly to an automatic feeding and riveting device for in-mold riveting of nuts. Background Technology

[0002] A press-fit nut, also known as a rivet nut or self-locking nut, is a type of nut used on thin plates or sheet metal. It is round in shape with rivet teeth and a guide groove at one end. Its principle is that the rivet teeth are pressed into the pre-set holes in the sheet metal. Generally, the diameter of the pre-set hole is slightly smaller than the rivet teeth of the press-fit nut. The pressure forces the rivet teeth of the press-fit nut into the plate, causing plastic deformation around the pre-set hole. The deformed material is squeezed into the guide groove, thereby producing a locking effect.

[0003] However, in the existing nut riveting stamping die process, it is usually necessary to use a fixture to fix the metal workpiece, then insert the riveting nut into the positioning hole and perform stamping. The operation process is relatively cumbersome and cannot meet the requirements of continuous processing. Therefore, we provide a nut riveting stamping die equipment to solve the above problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an automatic feeding and in-mold riveting device for press-fit nuts.

[0005] The present invention is achieved by the following technical solution: an automatic feeding and riveting nut in-mold riveting equipment, including a worktable, a support frame fixedly connected to the back of the worktable, two vibrating plates installed on the top of the support frame, a drive assembly installed on the top of the support frame, a U-shaped plate fixedly connected to the top of the worktable, a slide rail installed on the top of the U-shaped plate, and a riveting assembly installed on the top of the U-shaped plate.

[0006] The drive assembly includes a mounting bracket fixedly connected to the top of the support frame, the bottom of the slide rail installed inside the mounting bracket, a limit plate fixedly connected to the top of the mounting bracket, an adjusting cylinder installed on the top of the limit plate, a movable plate fixedly connected to the output end of the adjusting cylinder, the bottom of the movable plate slidably disposed on the top of the limit plate, and guide components installed on both sides of the limit plate.

[0007] The riveting assembly includes a servo motor and a part plate. A connecting plate is installed at one end of the output shaft of the servo motor. The bottom of the connecting plate is fixedly connected to the top of the U-shaped plate. A placement plate is installed on the surface of the output shaft of the servo motor. Limiting rods are fixedly connected at equal intervals to the top of the placement plate. The bottom of the part plate is set at the top of the U-shaped plate, and a riveting plate is set at the top of the part plate.

[0008] As a further improvement to the above solution, the guiding assembly includes a guide groove, one end of which is connected to a feeding track, and one end of the feeding track is connected to the surface of the vibratory feeder. A limit cover is installed on the top of the guide groove for conveying nuts.

[0009] As a further improvement to the above solution, fiber optic testing carriers are installed on both sides of the inner wall of the mounting frame to facilitate the inspection of the installation status of the nuts.

[0010] As a further improvement to the above solution, a protective cover is installed on the surface of the servo motor, and the bottom of the protective cover is fixedly connected to the top of the mounting bracket to ensure the normal operation of the servo motor.

[0011] As a further improvement to the above solution, the bottom of the limiting plate is provided with a straight groove for the limiting rod to move, ensuring the normal movement of the limiting rod.

[0012] As a further improvement to the above solution, the surface of the limiting plate is provided with equally spaced drop holes for the nuts to pass through, so that the nuts can fall onto the surface of the placement plate.

[0013] As a further improvement to the above solution, the top of the limiting plate is fixedly connected to two locking posts, and the surface of the moving plate is provided with two limiting grooves that are adapted to the locking posts, so as to facilitate limiting the stroke of the moving plate.

[0014] As a further improvement to the above solution, both sides of the surface of the movable plate are provided with locking grooves that are compatible with the nuts, so as to facilitate movement with the nuts.

[0015] As a further improvement to the above solution, a shim plate is installed on the surface of the servo motor, and the bottom of the shim plate is fixedly connected to the top of the mounting bracket, so that the height of the servo motor can be adapted to the movable height of the placement plate.

[0016] As a further improvement to the above solution, an operation panel is mounted on the top of the mounting frame via a support column, facilitating overall control of the device.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention achieves automatic feeding by setting up a vibratory feeder and starting the vibratory feeder, which automatically transports the nuts into the feeding track through vibration, so that the nuts move into the guide groove.

[0018] 2. This invention uses an adjusting cylinder. After the nut moves into the guide groove, the adjusting cylinder is activated, moving the moving plate backward so that the locking groove connects with the guide groove. At this time, the vibratory feeder continues to transport the nut, allowing it to enter the guide groove. Then, the adjusting cylinder resets, causing the locking groove and guide groove to misalign. Simultaneously, the locking groove connects with the discharge port, allowing the nut to fall onto the placement plate and be controlled by the limiting rod, thus achieving the transfer of the nut.

[0019] 3. By setting up a riveting plate, after the nut is automatically transferred, the servo motor works, causing the placement plate to move along the output shaft of the servo motor. When the placement plate moves under the riveting plate, the riveting plate works to rivet the part plate to the nut. After the riveting is completed, the servo motor is started to reset and continue to perform the next round of riveting work, thus realizing automatic and continuous riveting work.

[0020] 4. By setting up an optical fiber detection carrier, when the nut falls onto the placement plate, the nut is fitted onto the surface of the limiting rod. During this process, the optical fiber detection carrier will detect whether the nut has reached the working position. If the nut has not reached the working position, the device will stop working; if the nut has reached the working position, it will continue working, thus ensuring the safe operation of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the placement plate, the limiting rod, and the guide groove of the present invention; Figure 3 This is a schematic diagram of the structure of the limiting plate, adjusting cylinder, and moving plate of the present invention; Figure 4 This is a schematic diagram of the material discharge port, optical fiber detection carrier, and mounting frame of the present invention; Figure 5 This is a schematic diagram of the structure of the part plate and the riveting plate of the present invention.

[0022] Explanation of key symbols: 1. Workbench; 2. Support frame; 3. Vibratory feeder; 4. U-shaped plate; 5. Mounting frame; 6. Limiting plate; 7. Adjusting cylinder; 8. Moving plate; 9. Servo motor; 10. Parts plate; 11. Placement plate; 12. Limiting rod; 13. Riveting plate; 14. Guide groove; 15. Feeding track; 16. Drop port; 17. Locking groove; 18. Fiber optic detection carrier. Detailed Implementation

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0024] Please combine Figure 1-5 An automatic feeding and riveting nut in-mold riveting device according to this embodiment includes a worktable 1, a support frame 2 fixedly connected to the back of the worktable 1, two vibrating plates 3 installed on the top of the support frame 2, a drive assembly installed on the top of the support frame 2, a U-shaped plate 4 fixedly connected to the top of the worktable 1, a slide rail installed on the top of the U-shaped plate 4, and a riveting assembly installed on the top of the U-shaped plate 4.

[0025] The drive assembly is used to move the movable plate 8. The drive assembly includes a mounting frame 5 fixedly connected to the top of the support frame 2. Fiber optic detection carriers 18 are installed on both sides of the inner wall of the mounting frame 5 to facilitate the detection of nut installation. An operation panel is installed on the top of the mounting frame 5 via a support column for easy overall control of the device. The bottom of the slide rail is installed inside the mounting frame 5. A limit plate 6 is fixedly connected to the top of the mounting frame 5. An adjusting cylinder 7 (model DT30040-Ⅰ) is installed on the top of the limit plate 6. The output end of the adjusting cylinder 7 is fixedly connected to the movable plate 8. Two locking posts are fixedly connected to the top of the limit plate 6. Two limiting grooves adapted to the locking posts are opened on the surface of the movable plate 8 to limit the stroke of the movable plate 8. Locking grooves 17 adapted to the nuts are opened on both sides of the surface of the movable plate 8 to facilitate movement with the nuts. The bottom of the movable plate 8 is slidably set on the top of the limit plate 6. Guide components are installed on both sides of the limit plate 6.

[0026] The riveting assembly is used to rivet the nut and the part plate 10. The riveting assembly includes a servo motor 9 and the part plate 10. A protective sleeve is installed on the surface of the servo motor 9, and the bottom of the protective sleeve is fixedly connected to the top of the mounting bracket 5 to ensure the normal operation of the servo motor 9. A connecting plate is installed at one end of the output shaft of the servo motor 9, and the bottom of the connecting plate is fixedly connected to the top of the U-shaped plate 4. A placement plate 11 is installed on the surface of the output shaft of the servo motor 9. The surface of the limiting plate 6 has equally spaced drop holes 16 for the nut to pass through, so that the nut can fall onto the surface of the placement plate 11. A shim plate is installed on the surface of the servo motor 9, and the bottom of the shim plate is fixedly connected to the top of the mounting bracket 5 to make the height of the servo motor 9 match the movable height of the placement plate 11. A limiting rod 12 is fixedly connected at equally spaced intervals on the top of the placement plate 11. A straight groove for the limiting rod 12 to move is opened at the bottom of the limiting plate 6 to ensure the normal movement of the limiting rod 12. The bottom of the part plate 10 is set on the top of the U-shaped plate 4, and a riveting plate 13 is set on the top of the part plate 10.

[0027] The guide assembly is used for conveying nuts. The guide assembly includes a guide groove 14, one end of which is connected to a feeding track 15. One end of the feeding track 15 is connected to the surface of the vibratory plate 3. A limit cover is installed on the top of the guide groove 14.

[0028] The implementation principle of an automatic feeding and riveting nut in-mold riveting device in this application embodiment is as follows: start the vibratory plate 3, the vibratory plate 3 automatically conveys the nut into the feeding track 15 through vibration, so that the nut moves into the guide groove 14, thus realizing automatic feeding.

[0029] After the nut moves into the guide groove 14, the adjusting cylinder 7 is activated. The adjusting cylinder 7 moves the moving plate 8 to the back, so that the locking groove 17 is connected to the guide groove 14. At this time, the vibrating plate 3 continues to transport the nut, so that the nut enters the guide groove 14. Then the adjusting cylinder 7 is reset, so that the locking groove 17 is misaligned with the guide groove 14. At the same time, the locking groove 17 is connected to the discharge port 16, so that the nut falls on the placement plate 11 and is limited by the limiting rod 12, thus realizing the transfer of the nut.

[0030] After the nut is automatically transferred, the servo motor 9 starts working, causing the placement plate 11 to move along the output shaft of the servo motor 9. When the placement plate 11 moves under the riveting plate 13, the riveting plate 13 starts working to rivet the part plate 10 to the nut. After the riveting is completed, the servo motor 9 is started to reset and continue the next round of riveting work, realizing automatic and continuous riveting work.

[0031] When the nut falls onto the placement plate 11, it fits onto the surface of the limit rod 12. During this process, the fiber optic detection carrier 18 will detect whether the nut is in place. If the nut does not reach the working position, the device will stop working. If the nut reaches the working position, it will continue working, ensuring the safe operation of the device.

[0032] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An automatic feeding and in-mold riveting equipment for press-fit nuts, characterized in that, Includes a workbench (1), a support frame (2) is fixedly connected to the back of the workbench (1), two vibrating plates (3) are installed on the top of the support frame (2), a drive assembly is installed on the top of the support frame (2), a U-shaped plate (4) is fixedly connected to the top of the workbench (1), a slide rail is installed on the top of the U-shaped plate (4), and a riveting assembly is installed on the top of the U-shaped plate (4). The drive assembly includes a mounting bracket (5) fixedly connected to the top of the support frame (2), the bottom of the slide rail is installed inside the mounting bracket (5), a limiting plate (6) is fixedly connected to the top of the mounting bracket (5), an adjusting cylinder (7) is installed on the top of the limiting plate (6), a moving plate (8) is fixedly connected to the output end of the adjusting cylinder (7), the bottom of the moving plate (8) is slidably set on the top of the limiting plate (6), and guide components are installed on both sides of the limiting plate (6). The riveting assembly includes a servo motor (9) and a part plate (10). A connecting plate is installed at one end of the output shaft of the servo motor (9). The bottom of the connecting plate is fixedly connected to the top of the U-shaped plate (4). A placement plate (11) is installed on the surface of the output shaft of the servo motor (9). Limiting rods (12) are fixedly connected at equal intervals to the top of the placement plate (11). The bottom of the part plate (10) is set on the top of the U-shaped plate (4). A riveting plate (13) is set on the top of the part plate (10).

2. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, The guiding assembly includes a guide groove (14), one end of which is connected to a feeding track (15), one end of which is connected to the surface of the vibrating plate (3), and a limit cover is installed on the top of the guide groove (14).

3. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, Fiber optic testing carriers (18) are installed on both sides of the inner wall of the mounting frame (5).

4. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, The surface of the servo motor (9) is covered with a protective cover, and the bottom of the protective cover is fixedly connected to the top of the mounting bracket (5).

5. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, The bottom of the limiting plate (6) is provided with a straight groove for the limiting rod (12) to move.

6. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, The surface of the limiting plate (6) is provided with equally spaced drop holes (16) for the nuts to pass through.

7. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, The top of the limiting plate (6) is fixedly connected to two locking posts, and the surface of the moving plate (8) has two limiting grooves that are adapted to the locking posts.

8. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, The movable plate (8) has slots (17) on both sides of its surface that are compatible with nuts.

9. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, A shim plate is mounted on the surface of the servo motor (9), and the bottom of the shim plate is fixedly connected to the top of the mounting bracket (5).

10. The automatic feeding and in-mold riveting equipment for press-fit nuts as described in claim 1, characterized in that, An operation panel is mounted on the top of the mounting bracket (5) via a support column.

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