Screw feeding device

Abstract

The invention relates to the technical field of screw feeding, in particular to a screw feeding device. Comprising a support frame; the controller is mounted at the top of the supporting frame; the first electric push rods are symmetrically mounted at the top of the supporting frame; the linear motor is mounted on a telescopic rod of the first electric push rod; the mounting frame is connected to a rotor of the linear motor; the second electric push rods are symmetrically mounted on the side surfaces of the mounting frame; the fixed frame is connected to a telescopic rod of the second electric push rod; the conveyor is mounted in the fixed frame; the magnet is connected to the inner wall of the fixing frame and makes contact with the inner wall of a conveying belt of the conveyor. Through cooperation of the first electric push rod, the linear motor and the second electric push rod, the lower end of the conveyor can be driven to conduct three-axis movement in the material frame, automatic adsorption and lifting of screws can be achieved in combination with the design of the conveyor and the magnet, and the screws can be automatically and orderly arranged in cooperation with the lifting frame and the sliding inclined plate driven by the vibration motor.

Description

Technical Field

[0001] The present invention relates to the technical field of screw feeding, in particular to a screw feeding device. Background Art

[0002] In modern automated production processes, screws, as a common fastener, are widely used in electronics, electrical appliances, automobiles, machinery and other fields. In order to improve assembly efficiency and reduce errors and labor intensity caused by manual operation, screw feeding devices have gradually become one of the key components in automated equipment.

[0003] Currently, the screw feeders on the market are mainly divided into four types: vibrating disc type, stepped type, knife and fork type, and drum type. These feeders are usually equipped with a special tray, which uses vibration or other mechanical means to arrange the screws in an orderly manner in the tray and transport them to the assembly station in sequence. However, in actual application, the above-mentioned types of screw feeders generally have a significant problem: the capacity of the tray is limited and can only maintain continuous feeding for a short period of time. Therefore, during use, it is usually necessary to set up an additional material frame for storing screws near the feeder, and manually replenish the screws in the frame to the tray regularly. This intermittent feeding method not only increases labor costs, but also easily causes feeding interruptions, affecting the overall production rhythm and efficiency. In addition, manual operation may also introduce contamination risks or damage the surface of the screws, reducing product quality. Especially under the demand for large-scale, long-term continuous production, frequent manual intervention has become one of the important factors restricting the improvement of production efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a screw feeding device that can overcome the shortcomings of existing screw feeders that require manual labor to regularly replenish screws in the material tray during use, which has high labor costs and is prone to feeding interruptions, affecting the overall production rhythm and efficiency.

[0005] The technical solution is: a screw feeding device, including: a support frame; a controller, installed on the top of the support frame; a first electric push rod, symmetrically installed on the top of the support frame; a linear motor, installed on the telescopic rod of the first electric push rod; a mounting frame, connected to the mover of the linear motor; a second electric push rod, symmetrically installed on the side of the mounting frame; a fixed frame, connected to the telescopic rod of the second electric push rod; a conveyor, installed inside the fixed frame; a magnet, connected to the inner wall of the fixed frame, and the magnet is in contact with the inner wall of the conveyor belt of the conveyor; a conveying assembly, arranged on the support frame, for conveying and discharging the screws.

[0006] Furthermore, the conveying assembly includes: a guide rod connected to the support frame; a lifting frame, slidably connected to the guide rod; a square frame, connected to the side of the fixed frame and kept connected; a material guide inclined plate, connected to the inner wall of the square frame; an elastic membrane, the two ends of which are respectively connected to the lifting frame and the square frame and kept connected; a vibration mechanism, arranged on the lifting frame, used to drive the lifting frame to vibrate; an adjustment mechanism, arranged on the lifting frame, used to adjust the space inside the lifting frame for the screw to pass through; a toggle mechanism, arranged on the support frame, used to toggle the screw in the lifting frame to discharge the material.

[0007] Furthermore, the vibration mechanism includes: a connecting spring wound around the outside of the guide rod, with both ends of the connecting spring respectively connected to the support frame and the lifting frame; and a vibration motor installed on the side of the lifting frame.

[0008] Furthermore, the adjustment mechanism includes: a sliding inclined plate, which is symmetrically slidably connected to both sides of the lifting frame; a first screw, which is symmetrically threadedly connected to both sides of the lifting frame, and the first screw is threadedly connected to the sliding inclined plate.

[0009] Furthermore, the toggle mechanism includes: a fixed plate, symmetrically connected to the side of the support frame; a sliding plate, slidingly connected to the fixed plate; a second screw, rotationally connected to the side of the fixed plate, and the second screw is threadedly connected to the sliding plate; a connecting seat, connected to the top of the fixed plate; a brushless motor, installed on the connecting seat; and a toggle ring, installed on the brushless motor.

[0010] Furthermore, the invention also includes baffles connected to the outer wall of the conveyor belt of the conveyor at even intervals.

[0011] Furthermore, it also includes: a mounting frame connected to the side of the fixing frame; and a camera mounted on the mounting frame.

[0012] Furthermore, it also includes: a fixed frame connected to the supporting frame; a sliding seat slidably connected to the fixed frame; and a telescopic connecting rod, with both ends respectively connected to the sliding seat and the mounting frame.

[0013] The present invention has the following advantages: 1. The present invention can drive the lower end of the conveyor to move in three axes in the material frame through the cooperation of the first electric push rod, the linear motor and the second electric push rod. Combined with the design of the conveyor and the magnet, it can realize automatic adsorption and lifting of the screws. In conjunction with the lifting frame and the sliding inclined plate driven by the vibration motor, the screws can be automatically arranged in order, and then the toggle ring driven by the brushless motor can stably toggle the discharge to form a complete automated feeding process, which can effectively avoid the feeding interruption and low production efficiency caused by traditional manual feeding, and significantly reduce labor costs.

[0014] 2. The present invention adjusts the gap width of the sliding inclined plate by the first screw and the spacing of the sliding plates by the second screw, so that the device can adapt to screws of different diameters, thereby improving versatility; at the same time, the cooperation between the baffle and the conveyor ensures the segmented transportation of the screws, which can prevent accumulation and blockage, and the flexible connection design between the guide inclined plate and the elastic membrane can further ensure the continuity and stability of material transmission.

[0015] 3. The present invention uses the camera and controller to work together to monitor the position of the screws in the material frame in real time and accurately control the movement and adsorption of the conveyor, thereby solving the problem of loading efficiency when the inventory is low; the auxiliary support structure composed of the fixed frame, sliding seat and telescopic connecting rod can enhance the stability of the mounting frame during three-dimensional movement, ensure the smooth operation of the conveyor under complex motion trajectories, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the installation of the first electric push rod, the linear motor and the second electric push rod of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the conveyor and magnet of the present invention.

[0019] Figure 4 Schematic diagram of the specific structure of the magnet of the present invention.

[0020] Figure 5 This is a schematic diagram of the installation of the guide rod, lifting frame, square frame and elastic membrane of the present invention.

[0021] Figure 6 This is a schematic diagram of the installation of the material guide inclined plate of the present invention.

[0022] Figure 7 It is a schematic diagram of the installation of the vibration mechanism and the adjustment mechanism of the present invention.

[0023] Figure 8 It is a side view of the lifting frame and the adjustment mechanism of the present invention.

[0024] Figure 9 Schematic diagram of the installation of the toggle mechanism of the present invention.

[0025] Figure 10 Schematic diagram of the specific structure of the toggle mechanism of the present invention.

[0026] Figure 11 Schematic diagram of the installation of the baffle of the present invention.

[0027] Figure 12 This is a schematic diagram of the installation of the mounting frame, camera, fixing bracket, sliding seat and telescopic connecting rod of the present invention.

[0028] Figure numbers: 1-support frame, 2-controller, 3-first electric push rod, 4-linear motor, 5-mounting frame, 6-second electric push rod, 7-fixed frame, 8-conveyor, 9-magnet, 10-guide rod, 11-lifting frame, 12-square frame, 1201-material guide inclined plate, 13-elastic membrane, 14-connecting spring, 15-vibration motor, 16-sliding inclined plate, 17-first screw, 18-fixed plate, 19-sliding plate, 20-second screw, 21-connecting seat, 22-brushless motor, 23-sliding ring, 24-baffle, 25-mounting frame, 26-camera, 27-fixed frame, 28-sliding seat, 29-telescopic connecting rod. DETAILED DESCRIPTION

[0029] Embodiment: A screw feeding device, such as Figures 1-10 As shown, it includes a support frame 1, a controller 2, a first electric push rod 3, a linear motor 4, a mounting frame 5, a second electric push rod 6, a fixed frame 7, a conveyor 8, a magnet 9 and a conveying assembly. The controller 2 is installed on the top front side of the support frame 1, and the first electric push rod 3 is symmetrically installed on the top of the support frame 1. The linear motor 4 is installed between the telescopic rods of the two first electric push rods 3. The mover of the linear motor 4 is connected to the mounting frame 5. The second electric push rod 6 is symmetrically installed on the left side of the mounting frame 5. The fixed frame 7 is connected between the telescopic rods of the two second electric push rods 6. The bottom and right side of the fixed frame 7 are both open designs. The conveyor 8 is installed inside the fixed frame 7. The inner wall of the fixed frame 7 is connected to the magnet 9, and the magnet 9 is in contact with the inner wall of the conveyor belt of the conveyor 8. The support frame 1 is provided with a conveying assembly for conveying and discharging screws.

[0030] like Figures 5-10As shown, the conveying assembly includes a guide rod 10, a lifting frame 11, a square frame 12, a material guide inclined plate 1201, an elastic membrane 13, a vibration mechanism, an adjustment mechanism and a toggle mechanism. The upper right side of the support frame 1 is slidably connected to the guide rod 10, and the lifting frame 11 is slidably connected to the guide rod 10. The upper part of the lifting frame 11 is inclined, and the left and right sides and the bottom of the lifting frame 11 are all open designs. The upper right side of the fixed frame 7 is connected to the square frame 12, and the inner lower side of the frame 12 is connected to the material guide inclined plate 1201. The left end of the material guide inclined plate 1201 passes through the fixed The opening on the right side of the fixed frame 7 is located inside the fixed frame 7. The left side of the lifting frame 11 and the right side of the square frame 12 are connected with an elastic membrane 13 and maintained in communication. The elastic membrane 13 can adaptably expand and contract with the vibration of the lifting frame 11 and the lifting of the fixed frame 7. The lifting frame 11 is provided with a vibration mechanism for driving it to vibrate. The lifting frame 11 is also provided with a space for adjusting the passage of screws inside it. The support frame 1 is provided with a toggle mechanism for toggling the screws in the lifting frame 11 to discharge the material; the vibration mechanism includes a connecting spring 14 and a vibration electric The outer side of the guide rod 10 is wound with a connecting spring 14, and the two ends of the connecting spring 14 are respectively connected to the support frame 1 and the lifting frame 11. A vibration motor 15 is installed on the left side of the lower part of the lifting frame 11; the adjustment mechanism includes a sliding inclined plate 16 and a first screw 17. The front and rear sides of the lifting frame 11 are slidably connected to the sliding inclined plate 16. The front and rear sides of the lifting frame 11 are symmetrically rotated and connected to the first screw 17, and the first screw 17 is threadedly connected to the sliding inclined plate 16. The toggle mechanism includes a fixed plate 18, a sliding plate 19, and a second screw 20. , connecting seat 21, brushless motor 22 and toggle ring 23, the upper right side of the support frame 1 is symmetrically connected with a fixed plate 18, the right parts of the two fixed plates 18 are slidably connected with a sliding plate 19, the right parts of the two fixed plates 18 on the side away from each other are rotatably connected with a second screw 20, and the second screw 20 is threadedly connected to the sliding plate 19, the top right sides of the two fixed plates 18 are connected with a connecting seat 21, a brushless motor 22 is installed between the two connecting seats 21, a toggle ring 23 is installed on the brushless motor 22, and the material of the toggle ring 23 is rubber.

[0031] When the device is needed, first install the device at the designated location, then place the material frame filled with screws on the left side of the support frame 1, so that the conveyor 8 is located above the material frame, and then rotate the first screw 17 and the second screw 20 forward and backward according to the diameter of the screw. The first screw 17 can drive the sliding inclined plates 16 on the front and rear sides to move closer to or away from each other, thereby adjusting the gap width between the two sliding inclined plates 16, and the second screw 20 can drive the sliding plates 19 on the front and rear sides to move closer to or away from each other, thereby adjusting the gap width between the two sliding plates 19 to adapt to screws of different diameters; then control the controller 2 The second electric push rod 6 drives the fixed frame 7 to move downward, and the fixed frame 7 drives the conveyor 8 and the magnet 9 to move downward, so that the lower end of the conveyor 8 enters the material frame. Under the magnetic force of the magnet 9, the screw can be adsorbed and fixed to the lower end of the conveyor 8. At the same time, the conveyor 8 is controlled by the controller 2 to start working, so that the conveyor belt of the conveyor 8 rotates clockwise. The conveyor belt of the conveyor 8 can adsorb its surface on the screw and transport it upward. In the process of the screw being transported upward, the magnet 9 can ensure that the screw is always fixed on the conveyor belt surface of the conveyor 8 through magnetic force; then the vibration motor 15 can be controlled by the controller 2 to start working, and the vibration motor 15 can drive the lifting frame 11 to move up and down When the screw is transported to the upper end of the conveyor 8, the screw will be out of the magnetic field range of the magnet 9. At this time, the screw will fall down to the guide inclined plate 1201 due to gravity, and will fall down along the guide inclined plate 1201, the frame 12 and the elastic membrane 13 to the sliding inclined plate 16 in the lifting frame 11. As the sliding inclined plate 16 vibrates, the nut of the screw will be placed between the tops of the two sliding inclined plates 16, and the screw rod of the screw will be vertically located between the two The gap between the sliding inclined plates 16 can automatically arrange the screws in an orderly manner. Since the upper part of the lifting frame 11 is inclined, the orderly arranged screws will slide to the right due to gravity. When the toggle ring 23 contacts the nut of the screw, the screw can be stably toggled to the right between the two sliding plates 19 and moved to the right along the top of the sliding plate 19 for discharge. In the process of feeding the screws, the cooperation of the first electric push rod 3, the linear motor 4 and the second electric push rod 6 can be used to control the lower end of the conveyor 8 to move in three axes in the front, back, left, right and up and down directions in the material frame, ensuring that the conveyor 8 can lift and load all the screws inside the material frame.

[0032] like Figure 11As shown, baffles 24 are also included. Baffles 24 are evenly spaced and connected to the outer wall of the conveyor belt of the conveyor 8. The shape of the baffles 24 is similar to that of the guide inclined plate 1201, and the baffles 24 can directly pass through the guide inclined plate 1201 as the conveyor belt of the conveyor 8 rotates; when the conveyor 8 is lifting and loading the screws, the cooperation between the baffles 24 and the fixed frame 7 can limit the screws on the conveyor 8, and prevent the screws on the conveyor 8 from falling back into the material frame due to gravity, thereby ensuring the stability of loading; moreover, when the screws leave the magnetic field range of the magnet 9, each baffle 24 can separate the screws on the conveyor 8 into sections, and the screws between two adjacent baffles 24 are in the same area, ensuring that only one screw in one area can fall down to the guide inclined plate 1201 due to gravity at a time, thereby preventing a large number of screws from entering the lifting frame 11 at one time and causing blockage and accumulation.

[0033] like Figure 12 As shown, it also includes a mounting frame 25 and a camera 26. The mounting frame 25 is connected to the middle of the left side of the fixed frame 7, and the camera 26 is installed on the left side of the mounting frame 25. When the number of screws in the material frame is small, the internal situation of the material frame can be photographed by the camera 26, and the photographed picture is uploaded to the controller 2 for analysis, so that the position of the screws can be accurately found, so that the controller 2 can control the lower end of the conveyor 8 to quickly align with the screws in the material frame for adsorption and loading.

[0034] like Figure 12 As shown, it also includes a fixed frame 27, a sliding seat 28 and a telescopic link 29. The upper right side of the support frame 1 is connected to the fixed frame 27, and the upper part of the fixed frame 27 is slidably connected to the sliding seat 28. Two telescopic links 29 are connected between the left side of the sliding seat 28 and the upper right side of the mounting frame 5; since the height of the mounting frame 5 is relatively high, a combined structure of the fixed frame 27, the sliding seat 28 and the telescopic link 29 is set to enhance the stability of the mounting frame 5. When the first electric push rod 3 drives the linear motor 4 and the mounting frame 5 to move left and right, the telescopic link 29 can adaptively extend and retract. When the linear motor 4 drives the mounting frame 5 to move forward and backward, the sliding seat 28 and the telescopic link 29 can follow the mounting frame 5 to move forward and backward synchronously, thereby not affecting the forward, backward, left and right movement of the mounting frame 5.

Claims

1. A screw feeding device, comprising: a support frame (1); characterized in that, The invention also includes: a controller (2) mounted on the top of the support frame (1); a first electric push rod (3) symmetrically mounted on the top of the support frame (1); a linear motor (4) mounted on the telescopic rod of the first electric push rod (3); a mounting frame (5) connected to the mover of the linear motor (4); a second electric push rod (6) symmetrically mounted on the side of the mounting frame (5); a fixed frame (7) connected to the telescopic rod of the second electric push rod (6); a conveyor (8) mounted inside the fixed frame (7); a magnet (9) connected to the inner wall of the fixed frame (7), and the magnet (9) contacts the inner wall of the conveyor belt of the conveyor (8); and a conveying assembly arranged on the support frame (1) for conveying and discharging the screws.

2. A screw feeding device according to claim 1, characterized in that: The conveying assembly comprises: a guide rod (10) connected to the support frame (1); a lifting frame (11) slidably connected to the guide rod (10); a square frame (12) connected to the side of the fixed frame (7) and maintained in communication; a material guide inclined plate (1201) connected to the inner wall of the square frame (12); an elastic membrane (13) with two ends respectively connected to the lifting frame (11) and the square frame (12) and maintained in communication; a vibration mechanism provided on the lifting frame (11) for driving the lifting frame (11) to vibrate; an adjustment mechanism provided on the lifting frame (11) for adjusting the space inside the lifting frame (11) for screws to pass through; and a toggle mechanism provided on the support frame (1) for toggling the screws in the lifting frame (11) to discharge the material.

3. A screw feeding device according to claim 2, characterized in that: The vibration mechanism comprises: a connecting spring (14) wound around the outside of the guide rod (10), and the two ends of the connecting spring (14) are respectively connected to the support frame (1) and the lifting frame (11); and a vibration motor (15) installed on the side of the lifting frame (11).

4. A screw feeding device according to claim 2, characterized in that: The adjustment mechanism comprises: a sliding inclined plate (16) symmetrically slidably connected to both sides of the lifting frame (11); a first screw rod (17) symmetrically threadedly connected to both sides of the lifting frame (11), and the first screw rod (17) is threadedly connected to the sliding inclined plate (16).

5. The screw feeding device according to claim 2, characterized in that: The toggle mechanism comprises: a fixed plate (18) symmetrically connected to the side of the support frame (1); a sliding plate (19) slidably connected to the fixed plate (18); a second screw rod (20) rotatably connected to the side of the fixed plate (18), and the second screw rod (20) is threadedly connected to the sliding plate (19); a connecting seat (21) connected to the top of the fixed plate (18); a brushless motor (22) installed on the connecting seat (21); and a toggle ring (23) installed on the brushless motor (22).

6. The screw feeding device according to claim 1, characterized in that: It also includes baffles (24) connected to the outer wall of the conveyor belt of the conveyor (8) at even intervals.

7. The screw feeding device according to claim 1, characterized in that: The invention also includes: a mounting frame (25) connected to the side of the fixing frame (7); and a camera (26) mounted on the mounting frame (25).

8. The screw feeding device according to claim 1, characterized in that: The device further comprises: a fixed frame (27) connected to the support frame (1); a sliding seat (28) slidably connected to the fixed frame (27); and a telescopic connecting rod (29) with both ends respectively connected to the sliding seat (28) and the mounting frame (5).

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