A double-end milling system for profiles

Abstract

The utility model provides a kind of for section bar's double-end end milling processing system, it is related to section bar processing field, and the scheme using includes base, two end milling processing devices are provided on the base, the side of the base is provided with feeding and discharging device, it further includes material taking device, the material taking device is set on the base and is located close to the side of feeding and discharging device, the material taking device includes support seat, the end of the support seat is connected with the base, mobile support is movably arranged on the support seat, the mobile support moves along Y direction, the mobile support is movably provided with clamping component.This utility model can improve the support strength of door and window curtain wall section bar, ensure accurate feeding and material taking, meet the processing needs of efficient automation.

Description

Technical Field

[0001] This utility model relates to the field of profile processing, and in particular to a double-head end milling system for profile processing. Background Technology

[0002] As profile processing transforms towards high precision, customization, and automation, traditional single-head end milling requires manual flipping, secondary clamping, and repeated positioning, resulting in pain points such as low efficiency, poor precision, insufficient consistency, and difficulty in connecting with automated production lines.

[0003] In the prior art, Chinese invention patent CN 119857872 B provides an intelligent dual-head end milling machine and its working method, including: a frame, a left milling device, a right milling device, a material handling mechanism, and a loading mechanism; the left and right milling devices are slidably disposed above the frame; the material handling mechanism and the loading mechanism are disposed on a mounting base on the same side of the frame, and the material handling mechanism consists of a fixed bracket, a vertical bracket, a horizontal bracket, and a second gripper; the fixed bracket is fixedly mounted on the mounting base, a vertical guide rail is provided between the fixed bracket and the vertical bracket, a horizontal guide rail is provided at the top of the vertical bracket, a horizontal bracket is provided on the horizontal guide rail, and a second gripper is provided on the horizontal bracket for removing the processed material from between the left and right milling devices. This technical solution realizes the automation and intelligence of equipment operation, reducing the complexity and uncertainty of manual operation.

[0004] Compared to conventional profiles, curtain wall profiles and window frame mullions have larger cross-sectional dimensions, higher single-piece weight, and longer length. When using the above technical solutions to process curtain wall profiles, the material handling mechanism may experience elastic deformation, sagging, and shaking due to insufficient rigidity of the brackets, guide rails, and connecting parts during heavy-duty material handling and transfer. This can lead to deviations in profile placement, failure of clamping and positioning accuracy, and out-of-tolerance milling dimensions. Under heavy-duty conditions, it can also exacerbate equipment vibration and component wear, shorten service life, and even pose safety hazards such as profile falling and equipment jamming. Furthermore, it cannot achieve stable and continuous feeding and unloading of heavy profiles, making it difficult to meet the high-efficiency and automated processing requirements of heavy profiles such as curtain wall profiles and window frame mullions. Utility Model Content

[0005] To address the technical problem that existing dual-head end milling systems cannot meet the storage requirements of curtain wall profiles, this invention provides a dual-head end milling system for profiles that can improve the support strength for heavier profiles, ensure accurate material feeding and unloading, and meet the needs of efficient and automated processing.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a double-head end milling processing system for profiles, including a base, two end milling processing devices are arranged on the base, a loading and unloading device is arranged on one side of the base, and a material picking device is also included. The material picking device is arranged on the base and located on the side close to the loading and unloading device. The material picking device includes a support base, which is a box-type structure. The end of the support base is connected to the base. A movable bracket is movably arranged on the support base. The movable bracket moves along the Y direction. A clamping assembly is flexibly arranged on the movable bracket.

[0007] This utility model, by placing the box-type support base on the base, has several advantages. First, the box-type structure has high strength, effectively suppressing the elastic deformation, sagging, and swaying phenomena caused by insufficient rigidity in the prior art. Second, by directly installing the box-type support base on the base, it is closer to the end milling machine tool, shortening the extension distance of the moving bracket, avoiding the formation of a long cantilever structure, resulting in higher overall strength, improving the vibration resistance and operational reliability of the entire processing system, and meeting the automated processing requirements of curtain wall profiles and window frame mullions.

[0008] Furthermore, starting from the end closest to the base, the dimensions of the support increase along the Z-direction.

[0009] This invention significantly enhances the bending and deformation stiffness of the support base under eccentric loads and bending moments by increasing the Z-axis dimension of the support base, thereby suppressing the structural elastic deformation and vibration of the material handling device under heavy loads.

[0010] Furthermore, the clamping assembly includes a lifting bracket, which is slidably connected to the movable bracket. A support plate is provided on the lifting bracket, and a clamping plate is also lifted and lowered on the lifting bracket. The clamping plate is connected to a clamping cylinder, which is located on the lifting bracket. The clamping plate and the support plate are arranged opposite to each other.

[0011] Furthermore, the end milling processing device includes a movable base frame, which is movably mounted on the base. The movable base frame is movable along the X direction, and a movable seat is movably mounted on the movable base frame. The movable seat is movable along the Y direction.

[0012] This invention designs the movable base of the end milling processing device to be movable along the X-axis and the movable seat to be movable along the Y-axis, thereby enabling the end milling machine tool to be adjusted in two degrees of freedom in the horizontal plane. This allows the machine tool to flexibly adapt to the clamping position of door and window curtain wall profiles of different lengths and widths, improving the system's adaptability to different batches and specifications of profiles.

[0013] Furthermore, a support plate is vertically arranged on the movable seat, and a sliding plate 1 and a sliding plate 2 are raised and lowered on the support plate. The sliding plate 2 is located below the sliding plate. An end milling unit 1 is arranged on the sliding plate 1, and a positioning plate is arranged on one side of the end milling unit 1. The positioning plate can be attached to the end of the profile to be processed. An end milling unit 2 is arranged on the sliding plate 2.

[0014] This invention provides a precise axial (X-direction) machining reference surface for the profile through a positioning plate, ensuring the consistency of milling depth at both ends. At the same time, the moving base is equipped with two independently adjustable sliding plates, enabling separate and adjustable milling of both ends of the profile. The height and front-to-back position of the two milling units can be adjusted independently, which can accurately match the contour position and depth required for milling on the end face of the profile, meeting the high-precision machining requirements of complex end faces.

[0015] Furthermore, the first end milling unit includes a slide plate, which is movably mounted on the slide plate in the X direction. An end milling motor is mounted on the slide plate, and a milling cutter is connected to the end milling motor. The positioning plate is mounted on one side of the end milling motor. The second end milling unit includes a slide plate, which is movably mounted on the slide plate in the X direction. An end milling motor is mounted on the slide plate. The second end milling motor is a double-headed motor, and milling cutters are connected to both ends of the second end milling motor.

[0016] Furthermore, the end milling motor 2 is rotatably mounted on the slide plate 2, and a swing cylinder is also hinged to the slide plate 2. The piston rod of the swing cylinder is rotatably connected to the end milling motor 2, and the swing cylinder can drive the end milling motor 2 to rotate in a vertical plane.

[0017] This invention enables the milling cutter to have a swing angle function through a swing cylinder, which can dynamically adjust the milling angle during the processing, so that it can complete the processing of the horizontal and vertical surfaces on the end face of the profile in one go without changing the tool or re-clamping, which greatly expands the process capability of the equipment.

[0018] Furthermore, a support seat is vertically arranged on the mobile base frame. The support seat includes a support surface. A pressure plate is flexibly arranged on the support seat and is positioned opposite to the support surface. A positioning block is arranged on the support surface. A hook component is also flexibly arranged on the support seat. The lower end of the hook component is movably arranged on the support seat along the Y direction. The hook component can extend out of the support surface and move towards the positioning block.

[0019] This invention provides a stable vertical clamping force through the bearing surface and the pressure plate to prevent the workpiece from jumping during processing; the liftable hook can cooperate with the positioning block to adapt to profiles of different widths. This composite positioning method can effectively overcome the vibration and deformation caused by cutting force when end milling heavy and long cantilever profiles, ensuring the rigidity of the processing process.

[0020] Furthermore, it also includes a conveying device, which includes a feeding conveying component, a transverse conveying component, and a discharging conveying component. The feeding conveying component and the discharging conveying component both convey along the X direction. The transverse conveying component is vertically mounted on the feeding conveying component and conveys along the Y direction.

[0021] Furthermore, the transverse conveying assembly includes a conveying bracket, on which a pusher plate is movably arranged along the X direction. The pusher plate is connected to a pushing cylinder and can contact the end of the profile to be processed. On the side of the conveying bracket near the loading and unloading device, a plurality of positioning posts and clamping plates are also arranged along the X direction. The clamping plates correspond one-to-one with the positioning posts and are arranged opposite to the corresponding positioning posts. The clamping plates can move along the Y direction and can abut against both sides of the profile to be processed with the clamping plates and the positioning posts.

[0022] This invention integrates a pusher plate that can move in the X direction with a clamping plate-positioning column that can move in the Y direction. In the initial stage of conveying heavy-duty, long-sized door and window curtain wall profiles, it achieves precise coordinated positioning and constraint of their axial and lateral positions and postures. This greatly eliminates the cumulative positioning deviation caused by factors such as loading and placement errors and conveying deviation, and greatly improves the accuracy and reliability of the initial positioning of large-sized, heavy-duty profiles. It provides a reliable guarantee for the precise gripping of subsequent material handling devices and the high-precision processing of end milling machine tools.

[0023] As can be seen from the above technical solutions, this utility model has the following advantages: This invention provides a double-head end milling system for profiles. By placing a box-type support base on the base, on the one hand, the high strength of the box structure effectively suppresses elastic deformation, sagging, and swaying caused by insufficient rigidity in existing technologies; on the other hand, directly mounting the box-type support base on the base brings it closer to the end milling machine tool, shortening the extension distance of the moving bracket and avoiding the formation of a long cantilever structure, resulting in higher overall strength and improved vibration resistance and operational reliability of the entire processing system, meeting the automated processing requirements of curtain wall profiles and window frame mullions; by increasing the Z-axis dimension of the support base, its ability to withstand eccentric loads and bending moments is greatly enhanced. The bending and deformation stiffness is enhanced, thus suppressing the structural elastic deformation and vibration of the material handling device under heavy loads. By designing the movable base of the end milling device to move along the X-axis and the movable seat along the Y-axis, the end milling device achieves two degrees of freedom adjustment in the horizontal plane, allowing the machine tool to flexibly adapt to the clamping positions of door and window curtain wall profiles of different lengths and widths, improving the system's adaptability to different batches and specifications of profiles. A precise axial (X-axis) machining reference surface is provided for the profile through the positioning plate, ensuring the consistency of milling depth at both ends. Simultaneously, the movable seat is equipped with independently lifting slide plates one and two, enabling precise milling of both ends of the profile. The separate, adjustable milling mechanism for the end faces allows for independent adjustment of the height and forward / backward position of the two milling units, precisely matching the required contour position and depth of the profile end face, meeting the high-precision machining requirements of complex end faces. A swing cylinder enables the second milling cutter to have a swing angle function, dynamically adjusting the milling angle during machining, allowing it to complete the machining of horizontal and vertical surfaces on the profile end face in one pass without tool changes or secondary clamping, greatly expanding the equipment's process capabilities. Stable vertical clamping force is provided by the bearing surface and pressure plate to prevent workpiece jump during machining. The liftable hook can cooperate with the positioning block to adapt to profiles of different widths. This composite positioning method effectively overcomes the vibration and deformation caused by cutting forces during end milling of heavy and long cantilever profiles, ensuring the rigidity of the processing. By integrating a pusher plate that can move in the X direction with a clamping plate-positioning column that can move in the Y direction, precise coordinated positioning and constraint of the axial and lateral positions and attitudes of heavy and long curtain wall profiles are achieved in the initial stage of conveying. This greatly eliminates the cumulative positioning deviation caused by factors such as loading and placement errors and conveying deviation, and greatly improves the accuracy and reliability of the initial positioning of large and heavy profiles. This provides a reliable guarantee for the precise gripping of subsequent material handling devices and the high-precision processing of end milling machine tools. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the material handling device in an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the end milling device in an embodiment of the present invention. Figure 1 .

[0029] Figure 5 This is a schematic diagram of the end milling device in an embodiment of the present invention. Figure 2 .

[0030] Figure 6 This is a schematic diagram of the assembly structure of the bearing seat, pressure plate and hook component in an embodiment of this utility model.

[0031] Figure 7 This is a schematic diagram of the conveying device in a specific embodiment of the present invention.

[0032] In the diagram, 1. Base; 2. End milling device; 201. Movable base frame; 202. Movable seat; 203. Bearing seat; 204. Bearing surface; 205. Hook; 206. Pressure plate; 207. Pressure cylinder; 208. End milling unit one; 209. End milling unit two; 210. Support plate; 211. Slide plate one; 212. Slide plate two; 213. Swing cylinder; 214. End milling motor one; 215. Milling cutter one; 216. End milling motor two; 217. Milling cutter two; 218. Slide plate one; 219. Slide plate two; 220. Positioning plate; 222. Positioning cylinder. 223. Cylinder 1; 224. Plate; 225. Hook roller; 226. Positioning block; 227. Guide groove; 3. Loading and unloading device; 301. Six-axis robotic arm; 302. Pneumatic gripper; 4. Material handling device; 401. Support base; 402. Moving bracket; 403. Lifting bracket; 404. Clamping plate; 405. Support plate; 406. Clamping cylinder; 5. Conveying device; 501. Loading conveying assembly; 502. Lateral conveying assembly; 503. Unloading conveying assembly; 504. Pushing plate; 505. Positioning column; 506. Clamping plate; 507. Clamping cylinder. Detailed Implementation

[0033] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] like Figures 1 to 3As shown in the figure, this specific embodiment provides a double-head end milling processing system for profiles, including a base 1, end milling processing devices 2, a material handling device 4, and a loading / unloading device 3. The two end milling processing devices 2 are disposed on the base 1, the loading / unloading device 3 is disposed on one side of the base 1, and the material handling device 4 is disposed on the base 1 and located on the side close to the loading / unloading device 3. The material handling device 4 includes a support base 401, which is a box-type structure. The end of the support base 401 is connected to the base 1. A movable bracket 402 is movably disposed on the support base 401. The movable bracket 402 moves along the Y direction, and a clamping assembly is flexibly disposed on the movable bracket 402. Specifically, the base 1 adopts a high-strength welded closed box structure, two end milling processing devices 2 are arranged on the base 1, and the loading and unloading device 3 is arranged on one side of the base 1 along its length. The support seat 401 of the picking device 4 adopts a closed box structure formed by welding high-strength steel plate. The end of the support seat 401 is fixedly connected to the base 1 by high-strength bolts. The moving bracket 402 cooperates with the base 1 through a high-precision linear guide rail and is driven by a servo motor and a ball screw to achieve linear movement in the Y direction. The clamping assembly achieves lifting and lowering movement relative to the moving bracket 402 through the cooperation of the linear guide rail and the ball screw. In this embodiment, the X direction is the length direction of the profile, and the Y direction is the direction perpendicular to the length direction of the profile in the horizontal plane.

[0035] In this embodiment, by setting the box-type support base 401 on the base 1, on the one hand, the box structure has high strength, which effectively suppresses the elastic deformation, sagging and swaying phenomena caused by insufficient rigidity in the prior art. On the other hand, by directly installing the box-type support base 401 on the base 1, it is closer to the end milling processing device 2, shortening the extension distance of the moving bracket 402, avoiding the formation of a long cantilever structure, resulting in higher overall strength, improving the vibration resistance and operational reliability of the entire processing system, and meeting the automated processing requirements of curtain wall profiles and window frame mullions.

[0036] To enhance the load-bearing capacity of the material handling device 4 in this embodiment, such as Figure 3 As shown, in this embodiment, starting from the end closest to the base 1, the dimensions of the support 401 increase along the Z direction. The support 401 adopts a wedge-shaped box structure, with a larger height dimension at the end closer to the base 1 and a smaller height dimension at the end farther from the base 1, resulting in a uniform height gradient. The entire structure is formed by welding steel plates. The support 401 connects to the base 1 at the larger end to form a stable support, while the smaller end is adapted to the temporary storage space of the profile. This evenly distributes the bending moment and stress generated by heavy loads, greatly enhancing the bending and deformation stiffness of the support 401 when subjected to eccentric loads and bending moments, thereby suppressing the structural elastic deformation and vibration of the material handling device 4 under heavy loads.

[0037] like Figure 3As shown, in this embodiment, the clamping assembly can adopt the following specific structure: the clamping assembly includes a lifting bracket 403, which is slidably connected to a moving bracket 402. A support plate 405 is provided on the lifting bracket 403, and a clamping plate 404 is also slidably mounted on the lifting bracket 403. A clamping cylinder 406 is connected to the clamping plate 404, which is mounted on the lifting bracket 403. The clamping plate 404 and the support plate 405 are arranged opposite to each other. Specifically, the lifting bracket 403 is slidably engaged with the moving bracket 402 via a linear guide rail. The support plate 405 is made of steel plate and fixed to the lower part of the lifting bracket 403. The clamping plate 404 is connected to the lifting bracket 403 via a guide shaft. The clamping cylinder 406 is a high-thrust, thin-type cylinder with the cylinder body fixed to the top of the lifting bracket 403. The piston rod is connected to the clamping plate 404. Anti-slip rubber pads are attached to the opposing surfaces of the support plate 405 and the clamping plate 404. During operation, the clamping cylinder 406 drives the clamping plate 404 to press down, which works with the support plate 405 to clamp the profile. The lifting bracket 403 drives the profile to complete the lifting action, so as to achieve stable and reliable clamping of heavy profiles, prevent slippage and damage, and ensure the clamping positioning accuracy.

[0038] like Figures 4 to 5 As shown, in this embodiment, the end milling processing device 2 includes a movable base 201, which is movably mounted on the base 1. The movable base 201 can move along the X-axis, and a movable seat 202 is movably mounted on the movable base 201, which can move along the Y-axis. Specifically, the movable base 201 cooperates with the base 1 via a linear guide rail and is driven by a corresponding servo motor and gear rack to achieve linear movement in the X-axis. The movable seat 202 cooperates with the movable base 201 via a linear guide rail and is driven by a corresponding servo motor and ball screw to achieve linear movement in the Y-axis. During operation, the movable base 201 adjusts along the X-axis to adapt to the length of the profile, and the movable seat 202 adjusts along the Y-axis to adapt to the width of the profile. This allows the end milling processing device 2 to have two degrees of freedom of adjustment in the horizontal plane, enabling the machine tool to flexibly adapt to the clamping position of door and window curtain wall profiles of different lengths and widths, thus improving the system's adaptability to different batches and specifications of profiles.

[0039] like Figures 4 to 5As shown, in order to achieve separate and adjustable processing of complex profile end faces, in this embodiment, a support plate 210 is vertically arranged on the movable seat 202, and a sliding plate 211 and a sliding plate 212 are raised and lowered on the support plate 210. The sliding plate 212 is located below the sliding plate 211. An end milling unit 208 is movably arranged on the sliding plate 211 along the X direction. A positioning plate 220 is arranged on one side of the end milling unit 208. The positioning plate 220 can be attached to the end of the profile to be processed. An end milling unit 209 is movably arranged on the sliding plate 212 along the X direction. Specifically, the support plate 210 is made of high-strength cast iron and is vertically fixed on the moving base 202. Slide plate one 211 and slide plate two 212 are connected to the support plate 210 via corresponding linear guides and are driven by two independent servo motors and corresponding ball screws to achieve the lifting and lowering movement of slide plate one 211 and slide plate two 212. Slide plate two 212 is located below slide plate one 211. End milling unit one 208 is mounted on slide plate one 211 via linear guides and can move along the X-axis. The positioning plate 220 is made of wear-resistant alloy steel and is vertically fixed to the side of end milling unit one 208. End milling unit two 209 is mounted on slide plate two 212 via linear guides and can move along the X-axis. With this configuration, the positioning plate 220 provides an axial reference surface for the profile. Slide plate one 211 and slide plate two 212 can independently adjust the milling height and position, achieving independent adjustable milling of both end faces and meeting the high-precision machining requirements of complex end faces. Furthermore, end milling unit 208 includes a slide plate 218, which is movably mounted on a slide plate 211 along the X direction. An end milling motor 214 is mounted on the slide plate 218, and a milling cutter 215 is connected to the end milling motor 214. A positioning plate 220 is provided on one side of the end milling motor 214. End milling unit 209 includes a slide plate 219, which is movably mounted on a slide plate 211 along the X direction. The slide plate 212 is movably mounted on the slide plate 213. The slide plate 219 is equipped with an end milling motor 216, which is a dual-head motor. Milling cutters 217 are connected to both ends of the end milling motor 216. Specifically, the slide plate 218 is connected to the slide plate 211 via a linear guide rail. The end milling motor 214 is a high-speed variable frequency motor, fixed to the slide plate 218. The milling cutter 215 is a carbide end mill connected to the motor output shaft. The slide plate 219 is connected to the slide plate 212 via a linear guide rail. With the 212 combination, the end milling motor 216 is a dual-head output variable frequency motor, with the output shafts at both ends connected to the carbide end mill 217. The output shaft and the end mill 217 are locked together by an elastic chuck to ensure coaxiality during high-speed rotation. The end milling motor 214 drives the end mill 215 to complete single-point milling, while the end milling motor 216 drives the two end mills 217 to simultaneously complete dual-point milling, which greatly improves milling efficiency, is suitable for multi-position machining of profile end faces, and ensures milling quality and tool life.

[0040] Because fixed-angle milling units cannot machine complex contours, they require secondary clamping or tool changes, resulting in low machining efficiency and accuracy. To solve this technical problem, such as... Figures 4 to 5 As shown, in this embodiment, the end milling motor 216 is rotatably mounted on the slide plate 219, and the slide plate 219 is also hinged to a swing cylinder 213. The piston rod of the swing cylinder 213 is rotatably connected to the end milling motor 216, and the swing cylinder 213 can drive the end milling motor 216 to rotate in the vertical plane. Specifically, a pair of coaxial support lugs are fixedly installed on the slide plate 219, and a horizontal rotating shaft is fixedly installed in the middle of the housing of the end milling motor 216. The rotating shaft and the support lugs are rotatably engaged by a high-precision tapered roller bearing, enabling the end milling motor 216 to swing freely in the vertical plane. The tail of the swing cylinder 213 is hinged to the slide plate 219 by a double lug support, and the piston rod end is rotatably connected to the hinge seat on the outside of the housing of the end milling motor 216 by a single lug joint. The swing cylinder 213 can swing the end milling motor 216 from the vertical position to the horizontal position. The installation positions of the end milling motor 216 and the swing cylinder 213 avoid the rotation path and cutting area of ​​the end mill 217, thus avoiding motion interference. During operation, the swing cylinder 213 receives signals from the control system to extend or swing, driving the end milling motor 216 to rotate around the rotation axis in the vertical plane, synchronously driving the end mills 217 at both ends to change the cutting angle. With the X-axis feed, it completes continuous milling of horizontal and vertical contours, realizing one-time milling of complex contours of profile end faces, eliminating the need for secondary clamping and tool changing processes, significantly improving processing efficiency and contour accuracy, and expanding the equipment's process adaptability range.

[0041] In this embodiment, as Figures 4 to 6As shown, a support seat 203 is also vertically arranged on the movable base frame 201. The support seat 203 is connected to the movable base frame 201 by bolts. The support seat 203 includes a support surface 204. A pressure plate 206 is flexibly arranged on the support seat 203. The pressure plate 206 is arranged opposite to the support surface 204. A positioning block 226 is arranged on the support surface 204. A hook component 205 is also flexibly arranged on the support seat 203. The hook component 205 can extend out of the support surface 204 and move towards the positioning block 226. Specifically, the bearing seat 203 is made of high-strength cast iron, the bearing surface 204 is precision ground, and a guide groove 227 is provided on the bearing surface 204. The pressure plate 206 is driven by the pressure cylinder 207 to achieve lifting and lowering. The length direction of the hook component 205 is parallel to the Y direction. The hook component 205 includes a plate 224 arranged along the Y direction. One end of the plate 224 is rotated by a bearing and a hook roller 225 is vertically arranged. The hook roller 225 is arranged opposite to the positioning block 226. A cylinder 223 is provided at the lower part of the plate 224 of the hook component 205. The cylinder 223 drives the hook component 205 to achieve lifting and lowering. The cylinder 223 is also connected to the bearing seat 203 through a guide rail slider pair. One end of the slider is connected to a positioning cylinder 222. The positioning cylinder 222 extends and retracts along the Y direction. When clamping the profile, the positioning cylinder 222 drives the hook component 205 to move towards the profile. After it moves into place, the cylinder 223 drives the hook component 205 to rise. The hook roller 225 extends out from the guide groove 227 of the bearing surface 204. Then the piston rod of the positioning cylinder 222 retracts, and the hook roller 225 on the plate 224 abuts against one side of the profile, driving the profile to move towards the positioning block 226 until it abuts. Then, the pressure plate 206 descends and cooperates with the bearing surface 204 to achieve Z-axis clamping of the profile. The Y-axis movement capability of the hook component 205 can adapt to profiles of different widths. This positioning method can effectively overcome the vibration and deformation caused by cutting force during end milling of heavy and long cantilever profiles, ensuring the rigidity of the processing process.

[0042] like Figure 1 , Figure 2 and Figure 7As shown, the system also includes a conveying device 5, which includes a feeding conveying assembly 501, a transverse conveying assembly 502, and a discharging conveying assembly 503. The feeding conveying assembly 501 and the discharging conveying assembly 503 both convey along the X direction. The transverse conveying assembly 502 is vertically mounted on the feeding conveying assembly 501 and conveys along the Y direction. Specifically, the feeding conveying assembly 501 and the discharging conveying assembly 503 are electric roller conveyors with the conveying direction in the X direction. The transverse conveying assembly 502 is a belt conveyor and includes a conveying bracket. The conveying bracket of the transverse conveying assembly 502 is supported and mounted on the bracket of the feeding conveying assembly 501 by a cylinder and a guide rail slider pair. The conveying direction of the transverse conveying assembly 502 is the Y direction. During operation, the feeding conveyor 501 delivers the profile to the designated position, the transverse conveyor 502 lifts up and moves the profile in the Y direction to the feeding area near the loading and unloading device 3, and after processing, it is delivered by the unloading conveyor 503. In this embodiment, the loading and unloading device 3 includes a six-axis robotic arm 301. The six-axis robotic arm 301 is equipped with a pneumatic gripper 302. To ensure that the loading device can accurately clamp the profile to be processed, in this embodiment, multiple conveyor belts are arranged along the X direction on the conveying bracket. The multiple conveyor belts share a single drive motor, which is prior art and will not be described in detail here. A pusher plate 504 is movably arranged along the X direction on the conveying bracket. The pusher plate 504 is connected to a pusher cylinder. The pusher plate 504 can contact the end of the profile to be processed. On the side of the conveying bracket near the loading and unloading device 3, multiple positioning posts 505 and clamping plates 506 are also arranged along the X direction. The clamping plates 506 correspond one-to-one with the positioning posts 505. The clamping plates 506 are arranged opposite to the corresponding positioning posts 505. The clamping plates 506 can move along the Y direction. The clamping plates 506 and the positioning posts 505 can abut against both sides of the profile to be processed. Specifically, the pusher plate 504 is connected to the conveying bracket via a guide shaft and is driven by a push cylinder to move in the X direction. The positioning columns 505 are made of wear-resistant alloy steel and are arranged at equal intervals along the X direction. The clamping plate 506 is driven by a clamping cylinder 507 to move in the Y direction. The clamping plate 506 and the positioning columns 505 work together to clamp the two sides of the profile. During operation, the pusher plate 504 pushes the profile along the X direction to align with the reference, and the clamping plate 506 and the positioning columns 505 clamp the profile along the Y direction to fix its posture. With this setup, precise coordinated positioning and constraint of the axial and lateral positions and postures of heavy and long curtain wall profiles are achieved in the initial stage of conveying, greatly eliminating the cumulative positioning deviation caused by factors such as loading and placement errors and conveying deviation. This greatly improves the accuracy and reliability of the initial positioning of large and heavy profiles, providing a reliable guarantee for the precise gripping of the subsequent material handling device 4 and the high-precision machining of the end milling machine tool.

[0043] The working process of this system is as follows: After the profile to be processed is fed to the transverse conveyor 502 by the feeding conveyor 501 and positioned and clamped, the loading and unloading device 3 first removes the profile to be processed that has been positioned on the transverse conveyor 502, and then transfers it between the two end milling processing devices 2 to complete the positioning and clamping. The machine tool performs end milling processing on the profile. After the processing is completed, the picking device 4 actively moves between the machine tool through the moving bracket 402 and the clamping assembly to pick up the processed profile and temporarily store it. After the loading and unloading device 3 finishes loading, the processed profile on the picking device 4 is transferred to the unloading conveyor 503. Then the loading and unloading device 3 picks up a set of positioned profiles to be processed and waits for loading. This cycle is repeated to achieve continuous automated processing.

[0044] As can be seen from the above specific embodiments, this utility model has the following beneficial effects: 1. By setting the box-type support base 401 on the base 1, on the one hand, the box structure has high strength, which effectively suppresses the elastic deformation, sagging and swaying phenomena caused by insufficient rigidity in the prior art. On the other hand, by directly installing the box-type support base 401 on the base 1, it is closer to the end milling processing device 2, shortening the extension distance of the moving bracket 402, avoiding the formation of a long cantilever structure, resulting in higher overall strength, improving the vibration resistance and operational reliability of the entire processing system, and meeting the automated processing requirements of curtain wall profiles and window frame mullions. 2. By increasing the Z-axis dimension of the support base 401, the bending and deformation stiffness of the support base 401 under eccentric load and bending moment is greatly enhanced, thereby suppressing the structural elastic deformation and vibration of the material handling device 4 under heavy load. 3. By designing the movable base 201 of the end milling processing device 2 to be movable along the X direction and the movable seat 202 to be movable along the Y direction, the end milling processing device 2 has the ability to adjust in two degrees of freedom in the horizontal plane, which enables the machine tool to flexibly adapt to the clamping position of curtain wall profiles of different lengths and widths, and improves the system's adaptability to different batches and specifications of profiles. 4. The positioning plate 220 provides a precise axial (X-direction) machining reference surface for the profile, ensuring the consistency of the milling depth at both ends. At the same time, it is equipped with independent lifting slide plates 211 and 212, which realize separate and adjustable milling of the two end faces of the profile. The height and front and rear positions of the two milling units can be adjusted independently, which can accurately match the contour position and depth required for milling of the profile end face, and meet the high-precision machining requirements of complex end faces. 5. The swing cylinder 213 enables the milling cutter 217 to have a swing angle function, which can dynamically adjust the milling angle during the processing, so that it can complete the processing of the horizontal and vertical surfaces on the end face of the profile in one go without changing the tool or re-clamping, which greatly expands the process capability of the equipment. 6. The bearing surface 204 and the pressure plate 206 provide a stable vertical clamping force to prevent the workpiece from jumping during processing; the liftable hook can provide multi-point flexible support from below according to the cross-sectional shape of the profile, and its Y-axis movement capability can adapt to profiles of different widths. This composite positioning method can effectively overcome the vibration and deformation caused by cutting force when end milling heavy and long cantilever profiles, and ensure the rigidity of the processing process. 7. By integrating the X-axis movable pusher plate 504 with the Y-axis movable clamping plate 506 and positioning column 505, precise coordinated positioning and constraint of the axial and lateral positions and attitudes of heavy and long curtain wall profiles are achieved in the initial stage of conveying. This greatly eliminates the cumulative positioning deviation caused by factors such as loading and placement errors and conveying deviation, and greatly improves the accuracy and reliability of the initial positioning of large and heavy profiles. This provides a reliable guarantee for the precise gripping of the subsequent material handling device 4 and the high-precision processing of the end milling machine tool.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-head end milling system for profiles, comprising a base (1), wherein two end milling devices (2) are disposed on the base (1), and a loading / unloading device (3) is disposed on one side of the base (1), characterized in that, It also includes a material picking device (4), which is disposed on the base (1) and located on the side close to the loading and unloading device (3). The material picking device (4) includes a support base (401), which is a box structure. The end of the support base (401) is connected to the base (1). A movable bracket (402) is movably disposed on the support base (401). The movable bracket (402) moves along the Y direction. A clamping assembly is flexibly disposed on the movable bracket (402).

2. The dual-head end milling system for profiles as described in claim 1, characterized in that, Starting from the end closest to the base (1), the dimensions of the support (401) increase along the Z direction.

3. The dual-head end milling system for profiles as described in claim 2, characterized in that, The clamping assembly includes a lifting bracket (403), which is slidably connected to the movable bracket (402). A support plate (405) is provided on the lifting bracket (403), and a clamping plate (404) is also lifted and lowered on the lifting bracket (403). A clamping cylinder (406) is connected to the clamping plate (404), which is located on the lifting bracket (403). The clamping plate (404) and the support plate (405) are arranged opposite to each other.

4. The dual-head end milling system for profiles as described in claim 3, characterized in that, The end milling processing device (2) includes a movable base frame (201), which is movably mounted on the base (1). The movable base frame (201) is movable along the X direction, and a movable seat (202) is movably mounted on the movable base frame (201). The movable seat (202) is movable along the Y direction.

5. The dual-head end milling system for profiles as described in claim 4, characterized in that, A support plate (210) is vertically arranged on the movable seat (202). A sliding plate one (211) and a sliding plate two (212) are raised and lowered on the support plate (210). The sliding plate two (212) is located below the sliding plate one (211). An end milling unit one (208) is arranged on the sliding plate one (211). A positioning plate (220) is arranged on one side of the end milling unit one (208). The positioning plate (220) can be attached to the end of the profile to be processed. An end milling unit two (209) is arranged on the sliding plate two (212).

6. The dual-end milling system for profiles as described in claim 5, characterized in that, The end milling unit one (208) includes a slide plate one (218), which is movably mounted on the slide plate one (211) along the X direction. An end milling motor one (214) is mounted on the slide plate one (218), and a milling cutter one (215) is connected to the end milling motor one (214). The positioning plate (220) is mounted on one side of the end milling motor one (214). The end milling unit two (209) includes a slide plate two (219), which is movably mounted on the slide plate two (212) along the X direction. An end milling motor two (216) is mounted on the slide plate two (219), and the end milling motor two (216) is a double-headed motor. Milling cutter two (217) is connected to both ends of the end milling motor two (216).

7. The dual-head end milling system for profiles as described in claim 6, characterized in that, The end milling motor 2 (216) is rotatably mounted on the slide plate 2 (219). The slide plate 2 (219) is also hinged to a swing cylinder (213). The piston rod of the swing cylinder (213) is rotatably connected to the end milling motor 2 (216). The swing cylinder (213) can drive the end milling motor 2 (216) to rotate in the vertical plane.

8. The dual-head end milling system for profiles as described in claim 5, characterized in that, The mobile base frame (201) is also vertically provided with a support seat (203), the support seat (203) includes a support surface (204), a pressure plate (206) is flexibly provided on the support seat (203), the pressure plate (206) is arranged opposite to the support surface (204), a positioning block (226) is provided on the support surface (204), and a hook component (205) is flexibly provided on the support seat (203). The lower end of the hook component (205) is movably provided on the support seat (203) along the Y direction, and the hook component (205) can extend out of the support surface (204) and move toward the positioning block (226).

9. The dual-head end milling system for profiles as described in claim 1, characterized in that, It also includes a conveying device (5), which includes a feeding conveying assembly (501), a transverse conveying assembly (502) and a discharging conveying assembly (503). The feeding conveying assembly (501) and the discharging conveying assembly (503) both convey along the X direction. The transverse conveying assembly (502) is vertically mounted on the feeding conveying assembly (501) and conveys along the Y direction.

10. The dual-head end milling system for profiles as described in claim 9, characterized in that, The transverse conveying assembly (502) includes a conveying bracket. A pusher plate (504) is movably arranged along the X direction on one side of the conveying bracket near the loading and unloading device (3). The pusher plate (504) is connected to a pusher cylinder. The pusher plate (504) can contact the end of the profile to be processed. A plurality of positioning posts (505) and clamping plates (506) are also arranged along the X direction on the conveying bracket. The clamping plates (506) correspond one-to-one with the positioning posts (505). The clamping plates (506) are arranged opposite to the corresponding positioning posts (505). The clamping plates (506) can move along the Y direction. The clamping plates (506) and the positioning posts (505) can abut against both sides of the profile to be processed.

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