Screw feeding device

Abstract

The invention relates to a screw feeding device which comprises a vibration feeding disc, a feeding groove (1), an air blowing pipe (2), a working platform, a guide groove (6), a feeding moving block (7) and a feeding disc (4). The vibration feeding disc is connected with the feeding groove (1), the feeding groove (1) is connected with the guide groove (6), a pipe opening of the air blowing pipe (2) is aligned with a groove body of the guide groove (6), and the feeding groove, the feeding groove (1) and the guide groove (6) are erected at one end of the working platform. The feeding disc (4) is arranged at the other end of the working platform frame, and the feeding moving block (7) is connected with the guide groove (6). Compared with the prior art, the feeding device has the advantages that the feeding accuracy is improved, the error probability is reduced, and mistakes are easy to debug.

Description

Technical Field

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

[0002] The traditional screw assembly process is to manually hold the screw assembly equipment to install the screws into the corresponding product parts. This method has problems such as low assembly efficiency, increased labor, unstable product quality and low product qualification rate. At present, some automatic screw assembly equipment has also appeared on the market, but the existing automatic screw assembly equipment still has the problem of low assembly efficiency, and when the screw is stuck, it is inconvenient to repair.

[0003] Patent CN201810932175.4 discloses an automated dual-output screw feeding device, including a base and a vibration plate, a guide rail, and a dual-output mechanism arranged in a line on the base; the dual-output mechanism includes a support base plate, a front first limit block, and a front second limit block; the support base plate is arranged on the base; the dual-output mechanism also includes a rear limit block and a slider top plate; the dual-output mechanism also includes a driving cylinder, a cylinder slider, a first screw connection block, and a second screw connection block; the dual-output mechanism also includes a first air pipe joint and a second air pipe joint; the first air pipe joint and the second air pipe joint are respectively connected to the two air holes on the support base plate. This patent uses a dual-output mechanism, which speeds up the feeding rhythm, but the excessively fast feeding speed easily causes the screw position to be inverted, and the patent has a complex structure, and it is difficult to troubleshoot when errors occur in feeding. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a screw feeding device which improves feeding accuracy and is easy to troubleshoot.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A screw feeding device comprises a vibrating feeding plate, a feeding trough, an air blowing pipe, a working platform, a guide groove, a feeding shifting block and a feeding plate; the vibrating feeding plate is connected to the feeding trough, the feeding trough is connected to the guide groove, the pipe mouth of the air blowing pipe is aligned with the groove body of the guide groove, the feeding trough and the feeding trough and the guide groove are mounted on one end of the working platform; the feeding plate is arranged at the other end of the working platform frame, and the feeding shifting block is connected to the guide groove.

[0007] Furthermore, the working platform is provided with a shift rail, a loading tray, a guide rail, a screw rod and a loading transfer mechanism. The shift rail is arranged below the guide groove, and the loading transfer mechanism is arranged in the center of the working platform. A groove matching the guide rail is provided below the loading tray. The loading tray is placed on the guide rail. The guide rail and the screw rod are arranged parallel to the working platform, so that the loading tray can reciprocate along the guide rail to facilitate the screw loading operation. At the same time, after the loading is completed, the loading tray can also be moved to the tooling of the next process.

[0008] Furthermore, a plurality of screw positioning grooves are provided on the upper surface of the loading tray to facilitate the placement of the screws after loading.

[0009] Furthermore, the loading and transferring mechanism includes a robotic arm and a loading claw, the loading claw is arranged on the robotic arm, the robotic arm is rotatably fixed on the robotic arm base, and the robotic arm base is placed in the middle of the working platform, so that the loading claw can move up and down, which is convenient for grabbing and placing screws.

[0010] Furthermore, the feeding claw is provided with a groove matching the screw head, so that the feeding claw can grab the screw head. If the screw is inverted, the feeding claw cannot grab it, which is convenient for troubleshooting. An electromagnet is provided in the groove, and the electromagnet is used to absorb the screw head. Grasping and placement can be completed by simply controlling the switch of the electromagnet, thereby improving the feeding efficiency.

[0011] Furthermore, the degree of freedom of the robotic arm is not less than 3, thereby ensuring the flexibility of the feeding claw.

[0012] Furthermore, the screw rod is driven by a motor to drive the loading tray to perform reciprocating motion on the guide rail.

[0013] Furthermore, baffles are provided on both sides of the guide groove so that the gas blown out of the blowing pipe can be concentrated in the guide groove.

[0014] Furthermore, the loading shift block is provided with a plurality of notches for accommodating screws, and the side of the loading shift block is provided with a sliding block matching the shift rail, so that the loading shift block can reciprocate along the shift rail, which is convenient for screw loading.

[0015] Furthermore, the sliding block can reciprocate along the moving rail to drive the loading moving block to move.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) The present invention adopts a screw feeding method that combines a single feed trough and a feeding shift block, which has a higher fault tolerance rate than the traditional double-track feed trough. This is because during the single-track feeding process, even if there is a screw that is not in a good position in the feed trough, resulting in a feeding position deviation during feeding, the feeding claw will drop the screw with the wrong position during feeding, and the screw with the wrong position can be removed promptly and quickly.

[0018] (2) The present invention is provided with an air blowing pipe, which can blow air toward the screws in the guide groove, thereby avoiding the problem of insufficient power when the screws enter the guide groove from the feeding trough, so that the entire feeding process will not be blocked due to lack of power.

[0019] (3) The loading tray of the present invention can reciprocate along the guide rail, so that the loading tray can be moved to the tooling of the next process in time after loading, thereby improving the production efficiency of the entire assembly line.

[0020] (4) The present invention is provided with a screw guide groove, which enables the screws in the feeding trough to accurately enter the gap of the loading and shifting block, thereby improving the accuracy of loading and reducing the probability of error. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a screw feeding device of the present invention;

[0022] Figure 2 This is a partial enlarged view of a screw feeding device of the present invention;

[0023] Figure 3 It is a partially enlarged top view of a screw feeding device of the present invention;

[0024] Figure 4 A three-dimensional diagram of a screw feeding device of the present invention;

[0025] Description of the markings in the figure:

[0026] 1-feeding trough, 2-air blowing pipe, 3-loading claw, 4-loading tray, 5-guide rail, 6-guide groove, 7-loading shift block, 8-shift rail, 9-screw rod, 10-mechanical arm. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0028] Example 1

[0029] like Figure 1As shown, a screw feeding device includes a feeding trough 1, an air blowing pipe 2, a working platform, a guide groove 6, and a feeding shift block 7; the vibrating feeding plate is connected to the feeding trough 1, the feeding trough 1 is connected to the guide groove 6, and the feeding trough 1 and the guide groove 6 are mounted on one end of the working platform; the air blowing pipe 2 is arranged at the end of the working platform framed with the guide groove 6, the pipe mouth of the air blowing pipe 2 is aligned with the groove body of the guide groove 6, and the feeding shift block 7 is arranged at the end of the working platform framed with the guide groove 6. The work platform is provided with a shift rail 8, a loading tray 4, a guide rail 5, a screw 9 and a loading transfer mechanism. The shift rail is arranged below the guide groove 6, and the loading transfer mechanism is arranged in the center of the work platform. A groove matching the guide rail 5 is arranged below the loading tray 4. The loading tray 4 is placed on the guide rail 5. The guide rail 5 and the screw 9 are arranged parallel to the work platform, so that the loading tray can reciprocate along the guide rail, which is convenient for screw loading. At the same time, after the loading is completed, the loading tray can also be moved to the tooling of the next process. In this embodiment, the loading tray 4 is provided with 8 screw positioning grooves, which are convenient for placing the screws after loading.

[0030] like Figure 4 As shown, the feeding transfer mechanism includes a vertical cylinder 10, a transverse cylinder 11 and a feeding claw 3, the feeding claw 3 is arranged on the transverse cylinder 11, the transverse cylinder 11 is arranged on the vertical cylinder 10, and the vertical cylinder 10 is arranged in the center of the working platform; in this embodiment, the feeding claw 3 is provided with a groove matching the screw head, and the material in the groove is an electromagnet, so that the feeding claw 3 can grab the screw head. If the screw is inverted, the feeding claw 3 cannot grab it, which is convenient for troubleshooting, and the screw can be grabbed and placed only by controlling the switch of the electromagnet, thereby improving the feeding efficiency.

[0031] like Figure 2 , 3 As shown, the loading moving block 7 described in this embodiment is provided with two notches for accommodating screws, and the side of the loading moving block 7 is provided with a slider matching the moving rail; the slider can reciprocate along the moving rail to drive the loading moving block 7 to move.

[0032] When using, Figure 4As shown, the screw enters the feeding trough 1 through the vibrating loading tray, and the screw moves forward along the feeding trough 1 to reach the guide groove 6. The air blowing pipe 2 blows air to the screw in the guide groove 6 to give the screw forward power. The loading moving block 7 reciprocates along the moving rail 8, and the screw enters the notch on the loading moving block 7 that accommodates the screw. The mechanical arm 10 in the loading transfer mechanism moves, and adjusts the loading claw 3 to the notch of the loading moving block 7 to grab the screw. Then the mechanical arm 10 moves, and adjusts the loading claw 3 to the slot of the loading tray 4 that accommodates the screw, and places the screw in the slot. The slot of the loading tray 4 is filled with screws, and the loading tray 4 that has been loaded with materials is driven by the screw rod 9 along the guide rail 5 to the front of the tooling of the next process.

[0033] In summary, the present invention has broad application prospects and economic benefits.

[0034] In the description of the present invention, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "direction", "circumferential" and the like indicate positions or positional relationships, which are based on the positions or positional relationships shown in the accompanying drawings. These terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element must have a specific orientation and be constructed and operated in a specific manner. Therefore, they should not be understood as limiting the embodiments of the present application.

[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a body connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A screw feeding device, comprising a vibrating feeding plate, characterized in that: It also includes a feeding trough (1), an air blowing pipe (2), a working platform, a guide groove (6), a loading block (7) and a loading tray (4); the vibrating loading tray is connected to the feeding trough (1), the feeding trough (1) is connected to the guide groove (6), the pipe mouth of the air blowing pipe (2) is aligned with the groove body of the guide groove (6), the feeding trough and the feeding trough (1) and the guide groove (6) are mounted on one end of the working platform; the loading tray (4) is arranged at the other end of the working platform frame, and the loading block (7) is connected to the guide groove (6).

2. A screw feeding device according to claim 1, characterized in that: The working platform is provided with a shift rail (8), a guide rail (5), a screw rod (9) and a material transfer mechanism. The shift rail (8) is arranged below the guide groove (6). The material transfer mechanism is arranged at the center of the working platform. A groove matching the guide rail (5) is provided below the loading tray (4). The loading tray (4) is placed on the guide rail (5). The guide rail (5) and the screw rod (9) are arranged parallel to each other on the working platform.

3. A screw feeding device according to claim 2, characterized in that: The upper surface of the loading tray (4) is provided with a plurality of screw positioning grooves.

4. A screw feeding device according to claim 2, characterized in that: The loading and transferring mechanism comprises a mechanical arm (10) and a loading claw (3), wherein the loading claw (3) is arranged on the mechanical arm (10), and the mechanical arm (10) is rotatably fixed on a mechanical arm pedestal (11), and the mechanical arm pedestal (11) is placed in the middle of the working platform.

5. A screw feeding device according to claim 4, characterized in that: The feeding claw (3) is provided with a groove matching the screw head, and an electromagnet is arranged in the groove.

6. A screw feeding device according to claim 4, characterized in that: The degree of freedom of the mechanical arm (10) is not less than 3.

7. A screw feeding device according to claim 2, characterized in that: The screw rod (9) is driven by a motor to drive the loading tray (4) to perform reciprocating motion on the guide rail (5).

8. The screw feeding device according to claim 1, characterized in that: Baffles are provided on both sides of the guide groove (6).

9. A screw feeding device according to claim 1, characterized in that: The loading and shifting block (7) is provided with a plurality of notches for accommodating screws, and a sliding block matching the shifting rail is provided on the side of the loading and shifting block (7).

10. A screw feeding device according to claim 9, characterized in that: The slide block can reciprocate along the moving rail to drive the loading moving block (7) to move.

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