Flexible automatic feeding and discharging system

Abstract

The utility model discloses a flexible automatic feeding and discharging system. The system comprises four machining centers with modified side doors, a feeding and discharging mechanism, a robot, a ground rail, an electric control main cabinet, a client controller and a safety protection fence. The method comprises the steps that automatic feeding and discharging are achieved through a robot, a power source is connected through an electric control main cabinet, a client side control panel inputs control parameters, the robot is driven to take materials from a feeding bin and enter a machine tool through a machining center modified automatic side door, and the machine tool receives the materials, automatically clamps and locks the materials and then starts machining. And after completion, the robot takes the parts and puts the parts into a finished product receiving box, and the robot always works in the safety protection fence area so as to ensure safe and stable operation of the system. According to the utility model, through system integration, a certain connector shell processing machine is replaced by one person, automation is realized, labor intensity is reduced, processing rhythm standardization is promoted, the problem that the plan approval rate cannot be satisfied is solved, and the market contract fulfillment rate is efficiently ensured.

Description

Technical Field

[0001] The utility model relates to a flexible automatic loading and unloading system, belongs to the field of electrical connector machinery manufacturing, and is suitable for accessory shell parts such as rectangular connector covers, tail covers and wire clamps. Background Art

[0002] In the manufacturing process of electronic connector components, the traditional method mainly relies on manual operation, that is, the loading and unloading of products are completed manually during the mechanical processing and manufacturing process. This not only increases the intensity of manual labor, but also the production process is subject to the operating skills and sense of responsibility of the personnel. The production efficiency and quality pass rate are unstable and controlled, which cannot meet the current market's demand for timely and stable delivery. The equipment utilization rate is not high and the maximum output cannot be achieved. Due to the above problems, it is impossible to maximize the benefit creation internally and it is impossible to ensure the quality and quantity of timely delivery externally to satisfy customers. Therefore, a flexible automatic loading and unloading system and method are introduced in a targeted manner. Utility Model Content

[0003] The utility model aims to provide a flexible automatic loading and unloading system, which can replace manual labor with robots to automatically load and unload materials through machine replacement and automated labor reduction.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A flexible automatic loading and unloading system, including a machining center, a safety protection fence, a robot ground rail, an electric control cabinet, a client control panel, a finished product receiving mechanism, a loading mechanism and a robot;

[0006] The machining center is equipped with a four-axis rotary table, the equipment control panel is equipped with a system online and stand-alone selection switch, and a modified automatic door is provided on the side;

[0007] The safety protection fence is arranged around the robot ground rail, covering a range of length × width × height = 6000mm × 2800mm × 1800mm, mesh diameter: Φ3.5mm; mesh: 20X60mm; the pillars are traffic yellow, and the mesh plate is black; the safety protection fence is equipped with a switch door with a safety interlock, and the switch door of the safety door interlock is equipped with an anti-fool function;

[0008] The robot track has a total length of 4000mm, a travel of 3000mm, a load of 800kg, and a repeatability of ±0.05mm, and serves as the robot's walking axis;

[0009] The electric control cabinet is a switch that provides power energy for the system and is equipped with a "one-touch emergency stop" button;

[0010] The client control panel is 14 inches in size and is controlled by a touch screen. It has the functions of single-machine and online control between devices, signal monitoring, and display of alarm information;

[0011] The finished product receiving mechanism comprises a finished product receiving box, an electric control cylinder and a box transmission guide rail, wherein the box has a length × width × height = 500mm × 400mm × 60mm and is made of nylon plastic;

[0012] The size of the feeding mechanism is 250mm×200mm×90mm, with 46 steel balls distributed in a dot matrix on the bottom surface. The material picking gripper at the bottom of the bin is connected to the feeding cylinder, which can push the bottom layer of the blank to the feeding station during processing;

[0013] The robot is a six-joint robot with a maximum activity radius of 1831 mm and a maximum load of 25 kg on the robot wrist. The robot gripper is equipped with a blank loading gripper, a finished product removal gripper, a position sensor and a cleaning air knife.

[0014] The beneficial effects of adopting the above technical solution are:

[0015] 1. The utility model uses machines to replace people, so that loading, process processing and picking up are all completed by robots and processing centers, ensuring that the connector shell processing process is balanced and the beat is controllable, which is conducive to production planning and can efficiently ensure the timely delivery of products.

[0016] 2. After the utility model is upgraded and renovated through flexible automation, it can realize 24-hour unattended processing after the product is debugged and qualified, effectively improving equipment utilization and average monthly output, and improving internal output efficiency.

[0017] 3. The utility model can effectively eliminate product defects caused by abnormal raw materials, such as abnormal part size and appearance differences caused by shrinkage, by detecting the blank position online.

[0018] 4. The utility model is helpful for the construction of digital production lines. Through flexible automatic loading and unloading processing, the processing process can be carried out in a standardized manner. After being integrated with digital control systems such as MES system, ERP system and online detection, the construction of digital production lines can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the system structure of the flexible automatic loading and unloading system of the utility model.

[0020] In the figure: 1- machining center, 1.1- four-axis rotary table, 1.2- online and stand-alone selection switch, 1.3- modified automatic door, 2- safety protection fence, 3- robot ground rail, 4- electric control cabinet, 5- client control panel, 6- finished product receiving mechanism, 7- feeding mechanism, 8- robot. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] System component configuration: A system and method for flexible automatic loading and unloading, the system includes an electric control cabinet 4, a six-axis robot 8, a robot ground rail 3, four machining centers 1, a client control panel 5, a set of loading mechanism 7, a set of finished product receiving mechanism 6 and a set of safety protection fence 2. The electric control cabinet 4 provides power energy for the robot 8 execution system, and drives the robot 8 to load and unload through the client control panel 5.

[0023] Layout design: A flexible automatic loading and unloading system. Four vertical machining centers 1 with four-axis rotary worktables are symmetrically distributed on both sides of the robot ground rail 3. The equipment on the same side is arranged face to face. The loading and unloading mechanism 7 and the finished product receiving mechanism 6 constitute the loading and unloading mechanism. The loading mechanism 7 is arranged vertically above the finished product receiving mechanism 6, and the loading and unloading mechanism is arranged at one end of the robot ground rail 3. The discharge control cabinet 4 is placed at the other end of the robot ground rail 3. The gap between the machining center 1 around the robot ground rail 3 is filled with a safety protection fence 2. The layout of this utility model covers an area of ​​9000mm×6000mm.

[0024] A system and method for automatic loading and unloading. After the power is turned on by the electric control cabinet, the robot is driven to perform loading and unloading operations according to the preset program of the controller. The maximum activity radius of the robot is 1831mm, the maximum load of the robot wrist is 25KG, and it is equipped with a feeding clamp, a picking clamp, an online detection probe, and a waste chip cleaning wind knife and other devices. The robot takes the blank from the feeding mechanism and loads it into the machining center. After completion, the finished product is taken from the machining center and placed in the finished product receiving box; the feeding mechanism meets the capacity of 6 to 10 blank sheets with a size of δ8 to δ14 and a specification of 200×W×H (length×width×height). The bottom surface of the feeding mechanism is evenly distributed with 46 steel balls, and the bottom is equipped with a pneumatic clamp. When loading, the material clamp is driven by the cylinder to move the bottom blank When the sheet metal is pushed to the loading station, it makes point contact with the steel ball during the pushing process, and the friction is reduced by the rolling of the steel ball, so that the material-pickup claw can push the raw material into place more easily; the machining center is equipped with online and stand-alone operation selection buttons, and there is an automatic opening and closing door on the side as a channel for the robot to load and pick up parts. When the online operation is selected, the robot automatically receives the loading and completion of the picking up of parts; the finished product receiving mechanism is composed of a receiving box, an electric control cylinder and a guide rail. After receiving the parts placed by the robot's finished product picking claw, when this batch of parts is completed or the material box is full, the electric control cylinder drives the receiving box to be pushed to the manual finished product recovery station, and after the manual recovery is completed, it returns to the receiving station to wait for the material, so that the loading, processing and unloading of electrical connector parts are automatically completed in this reciprocating cycle.

[0025] The stand-alone / online selection button 1.3 is placed on the operation panel of the vertical machining center 1, near the door handle. The knob can select the vertical machining center online and stand-alone operation. When the knob is selected for stand-alone operation, the side modified automatic door 1.3 remains closed, and the robot 8 no longer enters the vertical machining center operation area to load and remove parts. This process is controlled manually; when the knob is selected for online operation, the system drives the robot to automatically load and unload materials;

[0026] Embodiment 1:

[0027] When processing a certain connector rectangular cover part, the product order quantity is small, so single-machine operation is selected. The single-machine / online knob on the machining center is manually placed in the single-machine position. At this time, the robot will no longer respond to the loading and picking operations of the equipment. After the manual debugging program is qualified, the operator loads the rough material from the workbench onto the four-axis rotary workbench, locks the fixture, closes the door, and starts the machine tool to execute the process processing. After completion, the machine tool stops, and the operator removes the finished parts and puts them in the designated position. After reloading, the processing is started again. This cycle is manually controlled to complete the product processing.

[0028] Embodiment 2:

[0029] When processing a certain connector rectangular tail cover part, the product order volume is large, and online operation is selected. The knob is manually placed in the online position. At this time, the robot is connected to the system and responds to the equipment's loading and picking operations. The 200mm×185mm×δ12 sheet material is manually placed in the loading bin. After the debugging program is qualified, the machine tool is started to perform process processing. After completion, the machine tool stops, and the robot removes the finished parts, converts the blank clamps to pull the raw materials into place in layers, and the four-axis rotary table is automatically locked. The robot exits from the side door of the vertical machining center and puts the finished parts into the finished product receiving box. After the side door is closed, the machining center restarts processing. When the blank material on the machine tool cannot be processed, the robot removes the material head and puts it into the waste material head recovery box, takes the blank sheet material from the loading bin again and loads it into the four-axis rotary table. The fixture is locked, the robot exits the machining center operating area, and the machining center starts processing. In this cycle, the robot controls the automatic loading and unloading of the product.

Claims

1. A flexible automatic loading and unloading system, characterized in that: It includes a processing center (1), a safety protection fence (2), a robot ground rail (3), an electric control cabinet (4), a client control panel (5), a finished product receiving mechanism (6), a loading mechanism (7) and a robot (8); The machining center (1) is internally provided with a four-axis rotary worktable (1.1), the equipment control panel is provided with a system online and single machine selection switch (1.2), and the side is provided with a modified automatic door (1.3); The safety protection fence (2) is arranged around the robot ground rail (3), with a coverage area of ​​length × width × height = 6000 mm × 2800 mm × 1800 mm, and a mesh diameter of Φ3.5 mm; Mesh size: 20X60mm; the pillars are in traffic yellow and the mesh is inky black; the safety fence (2) is equipped with a switch door with a safety interlock, and the switch door of the safety door interlock is equipped with an anti-fool function; The robot ground rail (3) has a total length of 4000 mm, a travel of 3000 mm, a load of 800 kg, and a repeatability accuracy of ±0.05 mm, and serves as the walking axis of the robot (8); The electric control cabinet (4) is a switch for providing electric power to the system and is provided with a "one-touch emergency stop" button; The client control panel (5) is 14 inches in size and is controlled by a touch screen, and has the functions of single-machine and online control between devices, signal monitoring, and display of alarm information; The finished product receiving mechanism (6) comprises a finished product receiving box, an electric control cylinder and a box transmission guide rail, wherein the box has a length × width × height = 500 mm × 400 mm × 60 mm and is made of nylon plastic; The feeding mechanism (7) has a size of 250 mm × 200 mm × 90 mm, with 46 steel balls distributed in a dot matrix pattern on the bottom surface. The material picking gripper at the bottom of the bin is connected to the feeding cylinder, and can push the bottom layer of the blank to the feeding station during processing; The robot (8) is a six-joint robot with a maximum activity radius of 1831 mm and a maximum load of 25 kg on the robot wrist. The robot gripper is equipped with a raw material loading gripper, a finished product removal gripper, a position sensor and a cleaning air knife.

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