Automatic discharging equipment for back plate rivet preassembly

Abstract

The automatic discharging equipment comprises a main machine frame, an annular conveying line is fixedly connected to the main machine frame, a carrier is fixedly connected to each moving table of the annular conveying line, and a first rivet feeding mechanism and a second rivet feeding mechanism are arranged on the main machine frame around the annular conveying line; the first rivet feeding mechanism comprises a first vibration feeding disc and a feeding flat pipe, the second rivet feeding mechanism comprises a second vibration feeding disc and a feeding round pipe, a self-positioning implanting mechanism is arranged on the main machine frame and comprises a feeding connector, a feeding guide rail, a pushing air cylinder and a pushing fork, and overturning positioning seats are hinged to the two sides of a discharging opening of the feeding guide rail. The automatic feeding device has the following beneficial effects that automatic feeding of two types of rivets can be achieved, an additional feeding mechanism and a high-freedom-degree mechanical arm do not need to be arranged, the production and maintenance cost is reduced, and the structure is relatively simple and practical.

Description

Technical Field

[0001] The invention relates to the field of metal back plate processing and assembly equipment, in particular to automatic material discharge equipment for back plate rivet pre-assembly. Background Art

[0002] The metal back panel of electronic products is a type of stamped metal part, which can be regarded as a rectangle as a whole. During the processing and assembly process, it is necessary to pre-load rivets in the corresponding holes and grooves of the metal back panel to be assembled, and then perform riveting processing in the riveting device.

[0003] The rivet is in the shape of a stepped tube and has parts of multiple diameters. Since there are many specifications and models of rivets, they can be divided into two types. One type of rivet has a maximum diameter smaller than its overall length. This type of rivet can currently be loaded using a commonly used hose with a vibrating loading plate. The other type of rivet has a maximum diameter larger than its overall length. If this type of rivet is loaded using a commonly used hose with a vibrating loading plate, the rivet will flip over in the pipe during the loading process. If a separate feeding mechanism is additionally provided, the cost is high. In addition, when the existing rivets are implanted after loading, a high-freedom robot is required to take the material from the discharge end of the loading mechanism and then transfer it to the carrier, which is costly. Therefore, an automatic unloading device for backplate rivet preassembly is required. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic feeding device for back plate rivet pre-assembly, which can realize automatic feeding of two types of rivets without the need for additional feeding mechanisms and the use of high-freedom manipulators, thereby reducing production and maintenance costs and having a relatively simple and practical structure.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic unloading device for pre-assembling back plate rivets, comprising a main frame, a circular conveyor line fixedly connected to the main frame, a carrier fixedly connected to each movable platform of the circular conveyor line, a first rivet feeding mechanism and a second rivet feeding mechanism arranged around the circular conveyor line on the main frame, the first rivet feeding mechanism comprising a first vibrating feeding tray and a feeding flat tube, the feeding flat tube being provided with a straight section, the second rivet feeding mechanism comprising a second vibrating feeding tray and a feeding circular Tube, the main frame is provided with a self-positioning implantation mechanism at the discharge end of the feeding flat tube and the discharge end of the feeding round tube, the self-positioning implantation mechanism includes a feed joint, a feeding guide rail, a pushing cylinder, and a pushing fork, and the two sides of the feeding guide rail discharge port are hinged with a flip positioning seat, and a torsion spring is provided at the connection between the flip positioning seat and the feeding guide rail, and each of the flip positioning seats is provided with a J-shaped groove, and the main frame is fixedly connected to an implantation cylinder beside each feeding guide rail, and the slide of each implantation cylinder is fixedly connected to an adsorption push rod.

[0006] Furthermore, a positioning block is fixedly connected to the carrier, and a material hole and a clearance groove are opened on the carrier.

[0007] Furthermore, a rotating assembly is fixedly connected to the main frame beside the annular conveyor line, a rotating end of the rotating assembly is fixedly connected to a limiting block, and a limiting hole corresponding to the limiting block is provided on the carrier.

[0008] Furthermore, the feeding flat tube and the feeding round tube are both flexible pipes, the feeding flat tube is made of PVC, and the feeding round tube is made of PU.

[0009] Furthermore, a T-shaped groove is provided in the feeding guide rail, the feeding joint and the pushing cylinder are fixedly connected to the feeding guide rail, the pushing fork is arranged opposite to the flip positioning seat, and the pushing fork is provided with an arc groove.

[0010] Furthermore, the feeding flat tube is horizontally arranged between the first vibrating loading tray and the feeding joint.

[0011] Furthermore, the feeding end of the flat feeding tube is connected to the discharging end of the first vibrating loading tray, and the feeding round tube is connected to the discharging end of the second vibrating loading tray.

[0012] Furthermore, a positioning hole is provided at the bottom of the adsorption push rod, and an adsorption hole is provided in the positioning hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: it can realize automatic loading of two types of rivets without configuring an additional feeding mechanism and using a high-freedom manipulator, reducing production and maintenance costs, and the structure is relatively simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the first rivet feeding mechanism of the present invention.

[0016] Figure 3 This is a schematic diagram of feeding a flat tube according to the present invention.

[0017] Figure 4 This is a schematic diagram of the second rivet feeding mechanism of the present invention.

[0018] Figure 5 It is a schematic diagram of a feeding circular tube of the present invention.

[0019] Figure 6 It is a structural schematic diagram of the self-positioning implantation mechanism of the present invention.

[0020] Figure 7 This is a structural diagram of the implant cylinder of the present invention.

[0021] Figure 8 It is a structural schematic diagram of the rotating assembly of the present invention.

[0022] Figure 9 It is a vertical cross-sectional schematic diagram of the feeding flat tube of the present invention.

[0023] In the figure: 1. Main frame; 2. Annular conveyor line; 3. First rivet loading mechanism; 301. First vibrating loading tray; 302. Feeding flat tube; 4. Second rivet loading mechanism; 401. Second vibrating loading tray; 402. Feeding round tube; 5. Self-positioning implantation mechanism; 501. Feeding joint; 502. Feeding guide rail; 503. Pushing cylinder; 504. Pushing fork; 505. Flipping positioning seat; 506. Implantation cylinder; 507. Adsorption push rod; 6. Carrier; 601. Positioning block; 602. Material hole; 603. Make way slot; 7. Rotating assembly; 8. Limit block. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example:

[0026] See also Figure 1-9 , an automatic unloading equipment for back plate rivet preassembly, comprising a main frame 1, a ring conveyor line 2 is fixedly connected to the main frame 1, each movable platform of the ring conveyor line 2 is fixedly connected to a carrier 6, a first rivet loading mechanism 3 and a second rivet loading mechanism 4 are arranged around the ring conveyor line 2 on the main frame 1, the first rivet loading mechanism 3 comprises a first vibrating loading tray 301 and a feeding flat tube 302, the feeding flat tube 302 is provided with a straight section, the second rivet loading mechanism 4 comprises a second vibrating loading tray 401 and a feeding round tube 402, the main frame 1 is located at the discharge end of the feeding flat tube 302 and The discharge end of the feeding tube 402 is provided with a self-positioning implanting mechanism 5, which includes a feed joint 501, a feeding guide rail 502, a pushing cylinder 503, and a pushing fork 504. The two sides of the discharge port of the feeding guide rail 502 are hinged with a flip positioning seat 505. A torsion spring is provided at the connection between the flip positioning seat 505 and the feeding guide rail 502. Each flip positioning seat 505 is provided with a J-shaped groove. An implanting cylinder 506 is fixedly connected to the side of each feeding guide rail 502 on the main frame 1, and an adsorption push rod 507 is fixedly connected to the slide of each implanting cylinder 506.

[0027] Positioning blocks 601 are fixedly connected to the four corners of the carrier 6. The positioning blocks 601 are used to position the metal back plate. A material hole 602 and a clearance groove 603 are opened on the carrier 6. The material hole 602 is used to make way for the placement of rivets. The clearance groove 603 opened on the carrier 6 can make way for the external loading mechanism during the loading and unloading process of the metal back plate.

[0028] A rotating assembly 7 is fixedly connected to the main frame 1, adjacent to the circular conveyor line 2. This assembly drives a stopper 8 to perform a turning motion. After the circular conveyor line 2 delivers the carrier 6 to each workstation, the stopper 8 engages the stopper hole on the carrier 6 for precise positioning. The feed flat tube 302 is made of PVC, a flexible pipe, while the feed circular tube 402 is made of PU.

[0029] A T-shaped groove is provided in the feeding guide rail 502 , the feeding joint 501 and the pushing cylinder 503 are fixedly connected to the feeding guide rail 502 , the pushing fork 504 is arranged opposite to the flip positioning seat 505 , and the pushing fork 504 is provided with an arc groove.

[0030] The feeding flat tube 302 is horizontally positioned between the first vibrating loading tray 301 and the feed connector 501 to improve the smoothness of the rivets in the feeding flat tube 302. Before loading, the feeding end of the feeding flat tube 302 is connected to the discharge end of the first vibrating loading tray 301. Rivets (with a maximum diameter greater than their overall length) are fed into the feeding flat tube 302 through the first vibrating loading tray 301. The feeding circular tube 402 is connected to the discharge end of the second vibrating loading tray 401. Rivets (with a maximum diameter less than their overall length) are fed into the feeding circular tube 402 through the second vibrating loading tray 401.

[0031] A positioning hole is provided at the bottom of the adsorption push rod 507 , and a positioning protrusion is provided on the positioning hole. The positioning hole is used to position the rivet, and the adsorption hole is used to vacuum adsorb the rivet during the implantation operation.

[0032] The working principle of the present invention is as follows: when the present invention is in use, the carrier 6 is used to position and place the metal back plate, and the ring conveyor line 2 is used to transport the carrier 6 to each rivet loading station for rivet loading and implanting;

[0033] When performing the rivet feeding operation, the first rivet feeding mechanism 3 is used to feed rivets whose maximum diameter is greater than their overall length, and feeds the rivets into the feeding flat tube 302 through the first vibrating feeding disc 301. Since the feeding flat tube 302 is provided with a straight section, the gap between the straight section inside the feeding flat tube 302 and the inner wall of the pipe prevents the rivets from turning over during feeding. The second rivet feeding mechanism 4 is used to feed rivets whose maximum diameter is less than their overall length, and feeds the rivets into the feeding circular tube 402 through the second vibrating feeding disc 401.

[0034] During the rivet implantation operation, after the rivet is fed into the flow channel inside the feeding guide rail 502 through the feed joint 501, the piston rod of the pushing cylinder 503 is extended to drive the pushing fork 504 to push a rivet to between the two flip positioning seats 505. The arc groove and the tail end of the J-shaped groove on the pushing fork 504 will position the rivet in this process. Then the piston rod of the implantation cylinder 506 is extended and the adsorption push rod 507 descends. During this process, the adsorption hole will adsorb and fix the rivet. Under the downward pressure of the adsorption push rod 507, the two flip positioning seats 505 will flip downward until the adsorption push rod 507 completely feeds the rivet into the corresponding hole position of the back plate and resets to rise. Under the action of the torsion spring, the flip positioning seat 505 is reset again, ready for the next rivet loading and implantation operation.

[0035] In the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] The above embodiments are used to further illustrate the present invention, but the present invention is not limited to these specific embodiments. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be understood to be within the scope of protection of the present invention.

Claims

1. An automatic unloading device for back plate rivet preassembly, characterized by: The invention comprises a main frame (1), wherein the main frame (1) is fixedly connected to a ring conveyor line (2), and each movable platform of the ring conveyor line (2) is fixedly connected to a carrier (6), and a first rivet feeding mechanism (3) and a second rivet feeding mechanism (4) are arranged on the main frame (1) around the ring conveyor line (2), wherein the first rivet feeding mechanism (3) comprises a first vibrating feeding disc (301) and a feeding flat tube (302), and the feeding flat tube (302) is provided with a straight section, and the second rivet feeding mechanism (4) comprises a second vibrating feeding disc (401) and a feeding round tube (402), and the main frame (1) is located at the discharge end of the feeding flat tube (302) and the feeding round tube (402). 02) is provided with a self-positioning implantation mechanism (5), the self-positioning implantation mechanism (5) comprises a feed joint (501), a feeding guide rail (502), a pushing cylinder (503), and a pushing fork (504), both sides of the feeding guide rail (502) are hinged with a flip positioning seat (505), a torsion spring is provided at the connection between the flip positioning seat (505) and the feeding guide rail (502), each flip positioning seat (505) is provided with a J-shaped groove, and an implantation cylinder (506) is fixedly connected to the side of each feeding guide rail (502) on the main frame (1), and an adsorption push rod (507) is fixedly connected to the slide of each implantation cylinder (506).

2. The automatic unloading equipment for back plate rivet preassembly according to claim 1, characterized in that: A positioning block (601) is fixedly connected to the carrier (6), and a material hole (602) and a clearance groove (603) are provided on the carrier (6).

3. The automatic unloading equipment for back plate rivet preassembly according to claim 2, characterized in that: A rotating assembly (7) is fixedly connected to the main frame (1) beside the annular conveyor line (2), a rotating end of the rotating assembly (7) is fixedly connected to a limiting block (8), and a limiting hole corresponding to the limiting block (8) is provided on the carrier (6).

4. The automatic unloading equipment for back plate rivet preassembly according to claim 1, characterized in that: The feeding flat tube (302) and the feeding round tube (402) are both flexible pipes. The material of the feeding flat tube (302) is PVC, and the material of the feeding round tube (402) is PU.

5. The automatic unloading equipment for back plate rivet preassembly according to claim 1, characterized in that: A T-shaped groove is provided in the feeding guide rail (502), the feeding joint (501) and the pushing cylinder (503) are fixedly connected to the feeding guide rail (502), the pushing fork (504) is arranged opposite to the flip positioning seat (505), and the pushing fork (504) is provided with an arc groove.

6. The automatic unloading equipment for back plate rivet preassembly according to claim 5, characterized in that: The feeding flat tube (302) is horizontally arranged between the first vibrating loading tray (301) and the feeding connector (501).

7. The automatic unloading equipment for back plate rivet preassembly according to claim 1, characterized in that: The feeding end of the feeding flat tube (302) is connected to the discharging end of the first vibrating loading tray (301), and the feeding circular tube (402) is connected to the discharging end of the second vibrating loading tray (401).

8. The automatic unloading equipment for back plate rivet preassembly according to claim 1, characterized in that: A positioning hole is provided at the bottom of the adsorption push rod (507), and an adsorption hole is provided in the positioning hole.

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