An automated drawer installation production line suitable for improving assembly efficiency

Abstract

The application discloses a kind of automated drawer installation production lines suitable for improving assembly efficiency, according to process steps: process A: a set of auxiliary material disc is configured to each station of desktop assembly line, and the side of desktop assembly line is circuit breaker accessory installation table;Process B: the finished product of circuit breaker by process A is placed into transfer tray, and the self-sliding rail below transfer tray is placed on the sliding guide rail of desktop assembly line;Process C: the drawer without installing accessory is hoisted to the drawer finished product assembly area on desktop assembly line by hand pressure spring cantilever crane A, and hand pressure spring cantilever crane B transports the finished product of circuit breaker to the drawer finished product assembly area;Process D: the finished product of circuit breaker is installed in drawer, transported to the drawer finished product assembly area II, and enters the drawer finished product inspection area through sliding guide rail;Process E: the finished product drawer after inspection is transported to the wooden tray of finished product drawer area by hand pressure spring cantilever crane C.

Description

Technical Field

[0001] This invention relates to a drawer assembly production line, and more specifically to an automated drawer assembly production line suitable for improving assembly efficiency. Background Technology

[0002] The MNS cabinet is a type of cabinet composed of many vertically mounted drawers with independent functional units. These drawers can be easily pulled out for maintenance. However, the installation of the components inside these drawers is limited by the cabinet's height and space constraints. Previous drawer assembly methods included:

[0003] 1. Pull out all the drawers of the low-voltage cabinet and stack them on the ground, then repeat the process of turning them over and over.

[0004] 2. Each person is assigned several drawers to assemble simultaneously;

[0005] 3. Once all drawers are installed and placed in the low-voltage cabinet, quality inspection will begin.

[0006] These drawers, requiring installation, are stacked together, making the production site look messy as they are taken out and installed one by one. Assigning installation work based on the number of drawers requires installers to have a sufficient variety of tools and accessories, which are often scattered and prone to misuse. Furthermore, the installed drawers need to be manually moved, impacting production efficiency. Quality control is difficult to conduct orderly inspections of the drawers outside the cabinet; inspections are only performed after the drawers are placed inside the low-voltage cabinet, requiring repeated pulling and unpulling of the drawers. This not only limits inspection space but also lengthens the production and inspection cycle. For drawers located high up, climbing on stools is extremely unsafe. Summary of the Invention

[0007] To address the issue of low drawer installation efficiency in MNS cabinets, this invention provides an automated drawer installation production line suitable for improving assembly efficiency.

[0008] This invention provides the following technical solution:

[0009] An automated drawer assembly production line for improving assembly efficiency is characterized by comprising a desktop assembly line, drawer areas with unassembled parts distributed on both sides of the desktop assembly line, and finished drawer areas, arranged according to the following process steps:

[0010] Process A: Each station on the desktop assembly line is equipped with a set of auxiliary material trays. One side of the desktop assembly line is a circuit breaker accessory installation table, which is used to install circuit breaker accessories.

[0011] Process B: The finished circuit breakers completed in process A are placed into a transfer tray. The transfer tray is placed on a self-sliding rail, and the self-sliding rail is placed on the sliding guide rail of the desktop assembly line.

[0012] Process C: Hand-operated spring cantilever cranes A and B are set up on the desktop assembly line. Drawers without accessories are hoisted to the drawer assembly area 1 on the desktop assembly line by hand-operated spring cantilever crane A. Hand-operated spring cantilever crane B transports the finished circuit breaker to the drawer assembly area 1.

[0013] Process D: Install the finished circuit breaker in the drawer, transport it to the second assembly area of ​​the finished drawer, and enter the finished drawer inspection area through the sliding guide rail;

[0014] Process E: The inspected finished drawers are transported to wooden pallets in the finished drawer area by hand-operated spring cantilever crane C.

[0015] Further, in process A, copper busbars, circuit breaker mounting plates, and circuit breaker mechanisms are prepared. On the circuit breaker accessory mounting platform, the bottom of the circuit breaker is installed on the circuit breaker mounting plate, the circuit breaker mechanism is installed on the top of the circuit breaker, and copper busbars are installed on both sides of the circuit breaker.

[0016] Furthermore, the hand-operated spring cantilever crane includes a first round tube, a second round tube, a first spring, a second spring, and a hand-operated lever. The bottom of the first round tube is fixed to the base, and the top of the first round tube is installed inside the second round tube. The hand-operated lever is movably hinged to the upper part of the second round tube. A first spring is installed between the rear arm of the hand-operated lever and the upper part of the second round tube, and a second spring is installed between the top of the second round tube and the front arm of the hand-operated lever. A double pulley bearing is installed on the front arm of the hand-operated lever, and a double hook is wound around the double pulley bearing. A double pulley limiting plate is installed inside the hand-operated lever at the rear end of the double pulley bearing.

[0017] Furthermore, the finished circuit breaker is placed into a transfer tray, a self-sliding rail is provided under the transfer tray, a limiting bracket is provided on the front side of the transfer tray, and the transfer tray is set to be higher at the back and lower at the front.

[0018] Furthermore, pulleys are installed inside both the self-sliding track and the sliding guide rail.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. It has a self-sliding track, which allows the finished circuit breaker to slide back and forth, enabling the production line to operate in an orderly manner even without moving, thus improving efficiency.

[0021] 2. It has sliding guide rails, which allow objects to slide left and right using their own weight, making the production line a continuous loop and improving efficiency.

[0022] 3. There is a hand-operated spring cantilever crane, which is divided into three working positions (A, B, and C) according to the weight of the object. It uses the principles of springs, levers, pulleys and bearings to operate within an adjustable range with minimal force.

[0023] 4. Finished drawers can be inspected promptly after production, allowing for immediate corrections and reducing accumulated inspection time.

[0024] 5. The product remains off the ground throughout the entire process, thus receiving effective protection.

[0025] 6. Allocate tasks according to process steps to reduce the number of tools, let professionals do professional tasks, and improve efficiency. Attached Figure Description

[0026] Figure 1 This is a production line diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the hand-operated spring cantilever crane of the present invention.

[0028] Figure 3 This is a top view of the hand-operated spring cantilever crane of the present invention.

[0029] Figure 4 for Figure 1 Diagram of direction A in the middle.

[0030] Figure 5 This is a schematic diagram of a desktop pipeline.

[0031] 100. Desktop assembly line; 200. Drawer area without installed accessories; 300. Finished drawer area; 400. Finished drawer assembly area 1; 500. Finished drawer assembly area 2; 600. Finished drawer inspection area;

[0032] 101. Hand-operated spring cantilever crane A; 102. Hand-operated spring cantilever crane B; 103. Hand-operated spring cantilever crane C.

[0033] 111. First round tube; 112. Second round tube; 113. First spring; 114. Second spring; 115. Hand lever; 116. Base; 117. Double pulley bearing; 118. Double pulley limiting plate; 119. Double hooks.

[0034] 1. Finished circuit breaker; 2. Transfer tray; 3. Self-sliding rail; 4. Limit bracket; 5. Sliding guide rail; 6. Pulley; 7. Auxiliary material tray; 8. Circuit breaker accessory mounting platform; 9. Copper busbar; 10. Circuit breaker mounting plate; 11. Circuit breaker mechanism; 12. Circuit breaker. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] By filtering and categorizing the original installation steps, an automated drawer assembly production line was created. Figure 1 and Figure 5 As shown, it includes a desktop assembly line 100, drawer areas 200 for uninstalled accessories distributed on both sides of the desktop assembly line, and finished product drawer areas 300.

[0037] Process A: Each workstation of the desktop assembly line 100 is equipped with a set of auxiliary material trays 7, which contain the corresponding auxiliary materials as needed. This allows for immediate use without cross-contamination, improving assembly efficiency. On one side of the desktop assembly line 100 is a circuit breaker accessory mounting platform 8, used for installing circuit breaker accessories. Here, copper busbars 9, circuit breaker mounting plates 10, and circuit breaker mechanisms 11 are prepared. On the circuit breaker accessory mounting platform 8, the bottom of the circuit breaker 12 is installed on the circuit breaker mounting plate 10, the top of the circuit breaker 12 is installed with the circuit breaker mechanism 11, and the copper busbars 9 are installed on both sides of the circuit breaker 12.

[0038] Process B: The finished circuit breaker 1 completed in process A is placed into the transfer tray 2. The transfer tray 2 is placed on the self-sliding track 3, which can slide back and forth. The self-sliding track 3 is placed on the sliding guide rail 5 of the desktop assembly line, which can slide left and right.

[0039] Process C: Hand-operated spring cantilever cranes A101 and B102 are installed on the desktop assembly line 100. Drawers without accessories are hoisted to the drawer assembly area 400 on the desktop assembly line by hand-operated spring cantilever crane A. Hand-operated spring cantilever crane B transports the finished circuit breaker to the drawer assembly area 400.

[0040] Process D: Install the finished circuit breaker in the drawer, transport it to the finished drawer assembly area 50, and enter the finished drawer inspection area 600 via the sliding guide rail 5;

[0041] Process E: The inspected finished drawers are transported to the wooden pallets in the finished drawer area 300 by a hand-operated spring cantilever crane C103.

[0042] Figure 2 and Figure 3As shown, the hand-operated spring cantilever crane includes a first circular tube 111, a second circular tube 112, a first spring 113, a second spring 114, and a hand-operated lever 115. The bottom of the first circular tube 111 is fixed to the base 116, and the top of the first circular tube 111 is installed inside the second circular tube 112. The hand-operated lever 115 is movably hinged to the upper part of the second circular tube 112. The first spring 113 is arranged between the rear arm of the hand-operated lever 115 and the upper part of the second circular tube 112. The second spring 114 is arranged between the top of the second circular tube 112 and the front arm of the hand-operated lever 115. A double pulley bearing 117 is installed on the front arm of the hand-operated lever 115. A double hook 119 is wound around the double pulley bearing 117. A double pulley limiting plate 118 is installed inside the hand-operated lever 115 at the rear end of the double pulley bearing 117.

[0043] The inner diameter of the first round tube 111 is 30 mm, and the inner diameter of the second round tube 112 is 50 mm.

[0044] The hand-operated spring cantilever crane combines the principles of levers and tension springs. With only a small pressing force, it can easily hook heavy objects. Depending on the weight of the object, two sets of springs generate corresponding tension to maintain lever balance. Equidistant flat washers are welded to the outer wall of the first circular tube; the outer diameter of the washers is 2mm smaller than the inner diameter of the second circular tube. When this device is fixed to a table, the first circular tube becomes a fixed axis, while the second circular tube, guided by these washers, forms a rotating axis. This allows the cantilever crane to rotate freely 360°. The hand-operated lever's forearm has a welded guide rail for a pulley bearing, allowing for adjustments to the working radius and expanding the working range. Two hooks are used to ensure balance during heavy object transport.

[0045] Figure 4 As shown, the finished circuit breaker 1 enters the transfer tray 2. A self-sliding rail 3 is installed below the transfer tray 2, and pulleys 6 are installed inside the self-sliding rail 3. A limiting bracket 4 is installed on the front side of the transfer tray 2. The transfer tray 2 is designed to be higher at the back and lower at the front, so that the pulleys have a certain degree of inclination and can automatically slide forward and sideways according to the weight of the circuit breaker, taking one and sliding it down at a time. Moreover, this transfer tray 2 can also slide left and right using the self-sliding guide rail 3 at the bottom.

[0046] Both the self-sliding track 3 and the sliding guide rail 5 are equipped with pulleys 6. This production line uses the principle of static pulleys and the principle of product weight to replace the process that originally required manual handling with the sliding of pulleys, so as to realize the movement in the X direction.

[0047] Figure 3 As shown, by utilizing the product's own weight, a pulley with a certain inclination is installed to achieve movement in the Y direction. Connecting two parallel production lines forms a U-shaped production line, effectively saving space.

[0048] To easily lift heavy objects, a hand-operated spring cantilever crane was designed. It is divided into three work positions, A, B, and C, according to the weight of the object. It utilizes the principles of springs, levers, pulleys, and bearings to operate within an adjustable range with minimal force.

[0049] The drawer assembly process is divided into two steps: the first step is to install the grounding, circuit breaker, and copper busbar screws; the second step is to install the square rod and tighten the copper busbar screws. This rational allocation of steps reduces the time spent retrieving tools and improves work efficiency.

[0050] The drawers are inspected before entering the low-voltage cabinet, and the process is orderly, eliminating the need to repeatedly pull out and pull out the drawers during testing inside the low-voltage cabinet, saving time and making the operation more convenient.

[0051] From the initial process, installation steps are rationally allocated across different stages, proceeding from small to large and from inside to outside, and carried out simultaneously. This allows experienced workers to become even more proficient, significantly reducing time spent searching for tools and moving drawers. Furthermore, the drawers remain off the ground throughout the entire process, effectively protecting the products. At the end of the production line, quality inspection is conducted systematically, ensuring that qualified drawers flow into the qualified area while unqualified products are returned directly for on-site rectification, minimizing the time spent on re-counting and rework.

[0052] It is easy to operate, safe and reliable, improves efficiency, saves manpower, requires no technical skills, and can be put to work immediately after training, and the quality is reliable.

Claims

1. An automated drawer assembly production line suitable for improving assembly efficiency, characterized in that: Includes a desktop assembly line (100), drawer areas (200) for unassembled parts distributed on both sides of the desktop assembly line, and finished product drawer areas (300), in accordance with the following process steps: Process A: Desktop assembly line (100) Each station is equipped with a set of auxiliary material trays (7). One side of the desktop assembly line (100) is a circuit breaker accessory installation table (8) for installing circuit breaker accessories. Process B: The finished circuit breaker (1) completed in process A is placed into the transfer tray (2), and the transfer tray (2) is placed on the self-sliding rail (3). The self-sliding rail (3) is placed on the sliding guide rail (5) of the desktop assembly line. Process C: Hand-operated spring cantilever crane A (101) and hand-operated spring cantilever crane B (102) are installed on the desktop assembly line (100). Drawers without accessories are hoisted to the drawer finished product assembly area (400) on the desktop assembly line by hand-operated spring cantilever crane A (101). Hand-operated spring cantilever crane B (102) transports the finished circuit breaker to the drawer finished product assembly area (400). Process D: Install the finished circuit breaker in the drawer, transport it to the second assembly area of ​​the finished drawer (50), and enter the finished drawer inspection area (600) through the sliding guide rail (5). Process E: The inspected finished drawers are transported to the wooden pallets in the finished drawer area (300) by a hand-operated spring cantilever crane C (103); The hand-operated spring cantilever crane includes a first round tube (111), a second round tube (112), a first spring (113), a second spring (114), and a hand-operated lever (115). The bottom of the first round tube (111) is fixed on the base (116). The top of the first round tube (111) is installed inside the second round tube (112). The upper part of the second round tube (112) is movably hinged to the hand-operated lever (115). The first spring (113) is set between the rear arm of the hand-operated lever (115) and the upper part of the second round tube (112). The second spring (114) is set between the top of the second round tube (112) and the front arm of the hand-operated lever (115). A double pulley bearing (117) is installed on the front arm of the hand-operated lever (115). A double hook (119) is wound around the double pulley bearing (117). A double pulley limiting plate (118) is installed inside the hand-operated lever (115) at the rear end of the double pulley bearing (117).

2. The automated drawer assembly production line for improving assembly efficiency according to claim 1, characterized in that: In process A, prepare copper busbar (9), circuit breaker mounting plate (10) and circuit breaker mechanism (11). On the circuit breaker accessory mounting platform (8), install the bottom of the circuit breaker (12) on the circuit breaker mounting plate (10), install the circuit breaker mechanism (11) on the top of the circuit breaker (12), and install copper busbar (9) on both sides of the circuit breaker (12).

3. The automated drawer assembly production line for improving assembly efficiency according to claim 1, characterized in that: The finished circuit breaker (1) enters the transfer tray (2), a self-sliding rail (3) is set below the transfer tray (2), a limiting bracket (4) is set on the front side of the transfer tray (2), and the transfer tray (2) is set to be higher at the back and lower at the front.

4. The automated drawer assembly production line for improving assembly efficiency according to claim 1, characterized in that: Both the self-sliding track (3) and the sliding guide rail (5) are equipped with pulleys (6).

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