Sawing method of double-end cutting saw for door and window frame and sash section at 45 degree angle

Abstract

The application discloses a sawing method of a double-head cutting saw for a 45-degree angle of a door and window frame and fan section bar, when cutting the section bar, the section bar is clamped on horizontal worktables and vertical worktables of left and right sawing machine heads, the saw blade is perpendicular to the horizontal worktable and forms a 45-degree angle with the vertical worktable, the mounting surface of the frame material section bar is leaned on the vertical worktable, the sticking area with the worktable is large, the section bar is not easy to slip during cutting, the cutting length of the section bar on the cutting saw is the frame assembling length of the section bar, the material height of the section bar does not need to be measured before cutting, and the cutting efficiency and precision are improved. The double-head cutting saw comprises a left sawing machine head fixedly installed on a bed body and a right sawing machine head slidably installed on the bed body, the left and right sawing machine heads each comprise a horizontal worktable, a vertical worktable, a section bar clamping device, a sawing motor, a saw blade and a feeding mechanism; the saw blades of the left and right sawing machine heads are perpendicular to the horizontal worktables and form a 45-degree angle with the vertical worktables.

Description

TECHNICAL FIELD

[0001] The present application relates to a sawing device, in particular to a sawing method for cutting 45-degree angle of double-end cutting sawing machine of aluminum profile, belongs to the technical field of aluminum alloy door and window processing equipment. BACKGROUND

[0002] In the process of door and window processing, the profile needs to be cut into different lengths, different angles and end face shapes of aluminum profile consistent with the size of door and window, and then assembled into door and window. When assembling, the end faces of two profiles are in contact. In order to assemble high-quality door and window, the length and roughness of the end face of the profile are required. The profile of the middle frame of the door and window is the largest. In order to improve the work efficiency and ensure the consistency of the cutting angle of the two ends of the aluminum material, the double-end cutting saw is usually used to cut the aluminum profile, which can cut the two ends of the profile to 45-degree inclined surface on one equipment, and the two adjacent aluminum profiles are connected to 90-degree angle, and finally the corner assembling machine is used for corner assembling processing, and the corner code is used to connect the frame profile into a whole frame structure. Figure 1 is a schematic diagram of broken bridge aluminum alloy door and window frame material, Figure 2 is a schematic diagram of frame material with 45-degree inclined surface cut at both ends. The a surface is the window frame mounting surface corresponding to the door / window hole of the building, the b surface is the glass or fan mounting surface, the c surface is the outdoor surface (towards the outside of the building), and the d surface is the indoor surface (towards the indoor). The included angle between the 45-degree inclined surface and the a surface is 45 degrees, the included angle between the 45-degree inclined surface and the b surface is 135 degrees, and the included angle between the 45-degree inclined surface and the c and d surfaces is 90 degrees. The main factors affecting the quality of door and window corner assembly are the angle accuracy of the 45-degree inclined surface after cutting, the perpendicularity of the 45-degree inclined surface to the c and d surfaces, the length L accuracy of the mounting surface, and the surface roughness of the 45-degree inclined surface; if the perpendicularity of the 45-degree inclined surface to the c and d surfaces is not enough, a gap will appear on the c or d surface after corner assembly (see Figure 3 ), if the length L accuracy of the mounting surface is not enough (the length of the right frame material is greater than that of the left frame material), the two corners will be misaligned after corner assembly (see Figure 4 ), these defects not only affect the appearance of the finished product, but also affect its water and air tightness. Similarly, if the surface state of the 45-degree inclined surface is rough, it will also cause large corner gap, and then affect the appearance and water and air tightness. The angle accuracy of the 45-degree inclined surface is usually fixed by adjusting the angle between the cutting saw blade and the horizontal workbench and the vertical workbench in the initial state of the equipment. The perpendicularity of the 45-degree inclined surface to the c and d surfaces, the length L accuracy of the mounting surface, and the surface state of the 45-degree inclined surface are affected by the cutting method and other factors.

[0003] The working principle and structure of the existing double-head saw are relatively mature, mainly composed of sawing machine head, bed body, material supporting frame, control cabinet and other parts. The double-head saw includes two sawing machine heads, the left sawing machine head is a fixed head, and the right sawing machine head is a movable head, which can move left and right on the guide rail. The structures of the two sawing machine heads are basically the same, generally composed of a saw blade, a saw blade motor, a workbench and a material pressing device. When in use, first, the distance between the two machine heads is adjusted accurately according to the length of the aluminum profile to be cut, then the aluminum profile is placed on the workbench and fixed by the material pressing device; the saw blade motor drives the saw blade to rotate, the saw blade motor is installed on the motor seat and driven by a feeding cylinder, and the saw blade realizes the work feeding motion in a translational or oscillating manner, so as to obtain the profile with the required length and end face shape. After the saw blade cuts off the profile, a smooth profile cutting end face can be obtained, but when the saw blade returns along the cutting trajectory, due to the slight jumping of the saw blade and the vibration of the bed body, the saw blade teeth will come into contact with the smooth profile end face that has been cut, resulting in rough cutting marks on the profile end face, which is called the backstroke sweeping of the saw blade in the industry. The cutting mode of returning along the original cutting trajectory cannot avoid the occurrence of the backstroke sweeping phenomenon.

[0004] The double-head cutting saws currently in use have linear feeding type and oscillating feeding type according to the work feeding mode of the saw blade, and have outer swing angle type (the included angle between the saw blade and the horizontal workbench is 135 degrees) and inner swing angle type (the included angle between the saw blade and the horizontal workbench is 45 degrees) according to the angle between the saw blade and the horizontal workbench. The inner swing angle double-head saw has the waste material head attached to the saw blade after sawing, which is easy to fall off, so if the waste material clamping device is not added, safety accidents are easy to occur, thus limiting its application. Patent CN106799518B discloses a double-head cutting saw bed for cutting aluminum profile at 45-degree angle, which includes a fixed machine head and a movable machine head. The movable machine head (5) is provided with a supporting frame (20), the supporting frame (20) is fixed with a horizontal workbench (21) and a vertical workbench (22), the horizontal workbench (21) is provided with a saw blade (23), the saw blade (23) is installed on a sawing motor (24), the sawing motor (24) is fixed on a sliding seat (25), the sliding seat (25) is installed on a sliding rail (26) through a sliding block, and the sliding seat (25) is connected with a work feeding cylinder (27). The patent adopts the technical scheme of inner swing angle type + linear feeding type.

[0005] The currently widely used is the outer swing angle double head cutting saw, such as the outer swing type automatic double head saw disclosed in patent CN210817585U, the right head (14) and the left head (15) are connected with a rotating box body (1), and a processing platform is horizontally provided on one side of the rotating box body (1), two hydraulic cylinders (11) are vertically and horizontally installed on the processing platform respectively, and a vertical pneumatic clamp (5) and a side pneumatic clamp (6) connected with the two hydraulic cylinders (11) respectively are installed on the same side of the rotating box body (1), a gas-liquid conversion cylinder (10) is installed in the same side upper end of the rotating box body (1), and a sawing motor swing arm mechanism (2) is connected with the gas-liquid conversion cylinder (10), a direct connection type precision cutting motor (8) is fixedly connected with the sawing motor swing arm mechanism (2), and a saw blade (13) is installed on the direct connection type precision cutting motor (8). The patent adopts the technical scheme of outer swing angle + swing feeding type.

[0006] In the prior art, whether it is an outer swing angle type, an inner swing angle type, a straight line feeding type or a swing feeding type, the work advancing direction of the saw blade is perpendicular to the vertical workbench, and a sawing opening is arranged on the vertical workbench; the profile to be cut is pressed on the horizontal workbench and the vertical workbench, and when the saw blade advances, the saw blade extends out of the sawing opening to cut the profile. In this way, when the saw blade is an outer swing angle structure, the frame shown in the drawing must be cut with the c surface of the profile adhered to the vertical workbench, the a surface on top and the b surface on bottom. Figure 2 The cutting length on the double head cutting saw is usually set as the distance between the two saw blades and the intersection point of the horizontal workbench plane, which is represented as the profile length L1 in Figure 2 , but the actual installation requirement of the profile length is L. The reason is that, first, the hole size of the wall body is consistent with the L size; second, the L size of the finished product is convenient for measurement. Therefore, when determining the frame length L of the 45-degree profile at the end, the material height B of the profile must be calculated, that is, L=L1+2B, which requires measuring the material height of the profile before cutting. Manual measurement is easy to cause a large measurement error. The error value of the material height measurement directly affects the length accuracy of the profile cutting, and the length accuracy of the cut profile directly affects the quality of the door and window. Therefore, some people have designed a material height automatic measurement device, such as the aluminum material height measurement device disclosed in patent CN210818749U, which uses a magnetic grating ruler to measure the material height, avoiding manual measurement error. However, whether manual measurement or automatic measurement device measurement will reduce the cutting efficiency.

[0007] From Figure 2It can also be seen that the c surface of the profile extends to the side of the b surface and contacts the fan, and when the profile is placed on the workbench for cutting, only the side of the lap joint surface contacts the horizontal workbench, and when the vertical pressing device presses the a surface from top to bottom, it is difficult to press the profile on the horizontal workbench, and the profile is easy to slip and produce position deviation during cutting, resulting in the decrease of cutting accuracy (angle accuracy, perpendicularity accuracy and surface roughness), and if the vertical pressing device exerts too much force, the profile is easy to deform.

[0008] In addition, the shortest length of the finished product that can be processed by the existing double-head cutting saw is, and when the right saw cutting head is adjusted to the closest distance between the two saw blades corresponding to the length of the left saw cutting head, it cannot cut ultra-short materials.

[0009] Briefly speaking, at present, the basic characteristics of the aluminum door and window profile double-head cutting saw are that the fixed head and the moving head are mainly outside the angle type, the movable head can automatically move to a given length, and finally a workpiece with a given length and a given end face angle value is processed. In the aluminum door and window industry, such numerical control double-head cutting saws are widely used for profile cutting. However, there are still the following problems, 1, the cut profile is not firmly pressed and is easy to slip and produce position deviation, resulting in a decrease in cutting accuracy; 2, the height of the material needs to be measured before cutting, which reduces the cutting efficiency; 3, the saw blade returns along the original sawing trajectory after cutting the profile, and the return scanning material causes the profile cutting end face to be rough; 4, it cannot cut ultra-short materials.

[0010] With the increasing improvement of people's living standards and the requirements of the national energy-saving and emission-reducing policy, the quality requirements for doors and windows are becoming higher and higher. The cutting accuracy (angle accuracy, perpendicularity accuracy and surface roughness) of the existing equipment cannot meet the requirements of high-quality doors and windows. SUMMARY

[0011] The purpose of the present application is to overcome the shortcomings of the prior art and provide a sawing method for a double-head cutting saw for 45-degree angle door and window frame and fan profiles to solve the related problems in the background art.

[0012] To achieve the above-mentioned purpose, the technical solution adopted by the present application is:

[0013] A sawing method for a double-head cutting saw for 45-degree angle door and window frame and fan profiles, characterized in that the method uses a double-head cutting saw for 45-degree angle door and window frame and fan profiles to cut the profiles, and the specific steps are as follows:

[0014] S1: manually placing the blank profile on the horizontal workbench and placing the mounting surface of the profile against the vertical workbench, and the outer surface of the profile is attached to the horizontal workbench;

[0015] S2. The profile clamping device clamps the profile;

[0016] The aforementioned double-head cutting saw for door and window frame profiles at a 45-degree angle includes a bed, on which a left sawing head and a right sawing head are mounted. The right sawing head is slidably mounted on the bed. Both the left and right sawing heads include a horizontal worktable, a vertical worktable, a profile clamping device, a sawing motor, a saw blade, and a feed mechanism. The sawing motor drives the saw blade to rotate, and the saw blade is perpendicular to the horizontal worktable and forms a 45-degree angle with the vertical worktable. The right sawing head is equipped with a saw blade feeding mechanism. A material carrier that can move left and right is also provided on the right sawing head.

[0017] S3. The feed mechanism drives the saw blade to feed and cut the profile;

[0018] S4. The material carrier and the blank profiles on it move to the right;

[0019] S5. The saw blade feeding mechanism drives the saw blade motor and saw blade to move laterally, separating them from the already cut profile end face;

[0020] S6. The feed mechanism drives the left and right saw blades back along the cutting trajectory;

[0021] S7. The profile clamping device releases its clamping force on the profile;

[0022] S8. Manually remove a section of the finished profile that has been processed;

[0023] S9. Repeat steps S2 to S8 to process the next section of profile.

[0024] By adopting the above technical solution, when cutting the profile, the operator first places the profile on the left and right saw heads, then uses the profile clamping device to fix the profile on the horizontal and vertical worktables. The feed mechanism then drives the saw blade to perform double-head cutting of the profile. Because the saw blade is perpendicular to the horizontal worktable and forms a 45-degree angle with the vertical worktable, the mounting surface of the frame profile (…) Figure 2 When the mounting surface of the frame profile (a) rests against the vertical worktable, the cutting length of the profile on the double-headed cutting saw is the frame assembly length of the profile. There is no need to measure the profile height before cutting, thus improving cutting efficiency and accuracy. Furthermore, by placing the mounting surface of the frame profile against the vertical worktable, the outer or inner side of the profile adheres to the horizontal worktable. The contact area between the profile and both the horizontal and vertical worktables is large, allowing for a moderate increase in clamping force. This ensures the profile is firmly pressed onto the worktable, preventing slippage and positional displacement during cutting, and guaranteeing high cutting accuracy.

[0025] The sawing method of the 45-degree angle double-end cutting saw for door and window frame and sash section bars, the left sawing head and the right sawing head further comprise a bottom plate slidable on the bed, the horizontal worktable and the vertical worktable are arranged at the front end of the bottom plate, and a head cover is hingedly connected to the rear end of the bottom plate; an adjusting plate is arranged on the bottom plate, a sliding plate is slidably arranged on the adjusting plate, a first hinged shaft seat and a second hinged shaft seat are arranged on the sliding plate, the lower end of the motor seat is hingedly connected to the first hinged shaft seat, the sawing motor is arranged on the upper end of the motor seat, and the saw blade is connected to the output shaft of the sawing motor; the work advancing cylinder is hingedly connected to the second hinged shaft seat, and the rod end of the cylinder is hingedly connected to the upper end of the motor seat; the work advancing cylinder drives the motor seat to swing on the first hinged shaft seat, drives the sawing motor and the saw blade to advance, the vertical worktable is provided with a sawing opening, the saw blade extends out of the sawing opening to cut the section bar, and the saw blade allowing mechanism is arranged between the adjusting plate and the sliding plate.

[0026] By adopting the technical scheme, the adjusting plate is arranged on the bottom plate, so that the angle of the saw blade can be adjusted when the initial state of the equipment is adjusted or the sawing angle needs to be corrected after a period of use, and the saw blade is ensured to be perpendicular to the horizontal worktable and to have an angle of 45 degrees with the vertical worktable.

[0027] Further, the saw blade allowing mechanism comprises an allowing mechanism driving mechanism, an allowing mechanism returning mechanism and a second linear guide rail pair, the allowing mechanism driving mechanism drives the sliding plate to move horizontally away from the end face of the cut section bar on the adjusting plate, the allowing mechanism returning mechanism drives the sliding plate to move reversely to return to the original position, the guide rail of the second linear guide rail pair is arranged on the adjusting plate, and the sliding block is arranged on the sliding plate; the movement direction of the second linear guide rail pair is parallel to the axis of the sawing motor.

[0028] Further, the allowing mechanism driving mechanism comprises a first hinged shaft, a second hinged shaft and an allowing mechanism cylinder and a cam which are vertically arranged on the adjusting plate, the tail end of the allowing mechanism cylinder is hingedly connected to the second hinged shaft, one end of the cam is hingedly connected to the first hinged shaft, the other end is hingedly connected to the rod end of the allowing mechanism cylinder, the side surface of the cam abuts against the side surface of the sliding plate, the allowing mechanism cylinder drives the cam to rotate, the cam drives the sliding plate to slide along the linear guide rail pair, the allowing mechanism returning mechanism comprises a first spring seat fixed to the adjusting plate and a second spring seat fixed to the sliding plate, and a compression spring is arranged between the first spring seat and the second spring seat.

[0029] By adopting the technical scheme, after cutting is completed, the piston rod of the allowing mechanism cylinder extends to drive the cam to rotate, the cam pushes the sliding plate and drives the saw blade motor and the saw blade to move transversely, so that the saw blade is separated from the end face of the cut section bar, and the phenomenon of the saw blade returning to sweep the material is effectively avoided. After the saw blade returns, the piston rod of the allowing mechanism cylinder is retracted to drive the cam to reversely rotate, and the sliding plate is reversely moved to return to the original position by the spring.

[0030] The sawing method of the door and window frame and fan section bar 45-degree angle double-end cutting saw, the right end of the right sawing head bottom plate is connected with a bracket, an ultra-short material cutting mechanism is arranged on the bracket, the ultra-short material cutting mechanism comprises a material loading frame and a secondary material pressing device arranged on the material loading frame, a short material driving device and a fifth linear guide rail pair are arranged between the material loading frame and the bracket, the short material driving device drives the material loading frame to move left and right on the bracket, and the guide rail of the fifth linear guide rail pair is installed on the lower bottom surface of the material loading frame, and the sliding block is installed on the upper bottom surface of the bracket.

[0031] Further, the secondary material pressing device comprises a secondary material pressing cylinder and a secondary pressing block, the secondary material pressing cylinder is vertically installed on the rear side of the material loading frame, and the secondary pressing block is connected to the rod end of the secondary material pressing cylinder; the short material driving device is a cylinder, the tail end of the cylinder is connected to the right end of the bracket, and the rod end of the cylinder is connected to the left end of the material loading frame; the material loading frame is provided with a positioning plate, the front side of the positioning plate is coplanar with the front side of the vertical workbench; and a material loading roller is rotatably arranged on the material loading frame, and the plane formed by the upper generatrix of the material loading roller is coplanar with the upper plane of the horizontal workbench.

[0032] By adopting the above technical scheme, the ultra-short material cutting can be realized, after the profile material head is cut by the left sawing head, the profile material clamping devices on the left sawing head and the right sawing head are simultaneously loosened, the secondary material pressing device on the material loading frame keeps the profile material in the pressed state, the cylinder drives the material loading frame to move right, so that the distance between the left end surface of the profile material and the right saw blade is shortened, then the profile material clamping device on the right sawing head is pressed again, and finally the profile material is cut by the right sawing head, and the minimum length of the cut profile material depends on the distance between the profile material clamping device on the right sawing head and the right saw blade, and the ultra-short material is obtained on the premise that the profile material is pressed by the profile material clamping device on the right sawing head. The group frame length of the ultra-short material profile is L, the stroke of the cylinder is L0, before the ultra-short material is cut, the distance between the left saw blade and the right saw blade on the left sawing head and the right sawing head is adjusted to L2=L+L0, after the profile material head is cut by the left sawing head, the cylinder drives the material loading frame to move right by L0, the distance between the left end surface of the profile material and the right saw blade is L2-L0=L, and the profile material is cut again by the right sawing head, so that the ultra-short material with the length L is obtained.

[0033] Further, a material moving cylinder is arranged between the rod end of the cylinder and the left end of the material loading frame, the rod end of the material moving cylinder is connected with the rod end of the cylinder, and the tail end of the material moving cylinder is connected to the left end of the material loading frame.

[0034] By adopting the above technical scheme, when cutting non-ultra-short materials, after cutting is completed, the material moving cylinder drives the material carrier to move to the right, so that the left end face of the blank profile 43 is separated from the right saw blade by a distance, providing space for the right saw blade to move, then the left saw blade and the right saw blade move horizontally under the driving of the material allowing cylinder, so that the saw blade is separated from the end face of the profile that has been cut, and when the saw blade returns along the cutting track, the phenomenon of the saw blade sweeping the material during return is avoided.

[0035] In the sawing method of the 45-degree angle double-head cutting saw for the door and window frame and sash profile, a left lower material plate inclined to the lower left is arranged on the left side of the left sawing head horizontal workbench, and a right lower material plate inclined to the lower right is arranged on the right side of the right sawing head horizontal workbench.

[0036] By adopting the above technical scheme, the accumulation of waste material heads on the workbench can be avoided, and the subsequent profile processing is not affected.

[0037] A profile end positioning device is arranged on the left side of the left sawing head horizontal workbench, which comprises a positioning cylinder vertically installed on the vertical workbench, and a positioning rod connected to the rod end of the positioning cylinder, and a through hole is arranged on the left lower material plate, and the positioning rod can be driven by the positioning cylinder to extend upward from the through hole to position the end of the profile.

[0038] By adopting the above technical scheme, before placing the profile, the positioning rod is first lifted, so that the left end face of the profile is placed against the positioning rod, and the positioning is convenient and reliable. The distance between the positioning rod and the saw blade is preferably set to be the shortest after cutting, so that the waste material head is not too long to cause waste or too short to need secondary cutting. After cutting is completed, the positioning rod is lowered, so that the waste material head smoothly slides into the waste groove, avoids being stuck on the lower material plate, and provides space for the left saw blade to move.

[0039] In the sawing method of the 45-degree angle double-head cutting saw for the door and window frame and sash profile, the profile clamping device comprises a left horizontal pressing device and a left vertical pressing device arranged on the left sawing head, and a right horizontal pressing device and a right vertical pressing device arranged on the right sawing head.

[0040] The left horizontal pressing device and the right horizontal pressing device each comprise a horizontal pressing cylinder and a horizontal pressing plate, the horizontal pressing cylinder is installed on the rear side of the vertical workbench, the rod end can extend forward from the through hole arranged on the vertical workbench and is hinged to the lower end of the horizontal pressing plate, a first long hole in the front-rear direction is arranged on the horizontal workbench, the upper end of the horizontal pressing plate extends upward from the first long hole to the table surface of the horizontal workbench, a first pressing block is arranged at the end, and the horizontal pressing cylinder drives the horizontal pressing plate to slide in the first long hole.

[0041] The left vertical pressing device and the right vertical pressing device each comprise a vertical pressing cylinder and a vertical pressing plate, the vertical pressing cylinder is installed on the rear side of the vertical workbench, the rod end is hinged to the rear end of the vertical pressing plate, a vertical second long hole is arranged on the vertical workbench, the front end of the vertical pressing plate extends out of the second long hole to the front of the workbench top of the vertical workbench, a third pressing block is arranged at the end, and the vertical pressing cylinder drives the vertical pressing plate to slide in the second long hole.

[0042] By adopting the above technical scheme, the profile clamping devices each adopt a cylinder, which is fast, efficient, simple in structure, and convenient to install, use and maintain; the horizontal pressing cylinder and the vertical pressing cylinder are each installed on the rear side of the vertical workbench, the equipment structure is more compact, and the profile feeding and discharging operation is more convenient.

[0043] Further, the left horizontal pressing device and the right horizontal pressing device each further comprise a third guide rail pair arranged in parallel with the horizontal pressing cylinder, the sliding block of the third guide rail pair is connected to the rear side of the vertical workbench, and the front end of the guide rail of the third guide rail pair can extend out of the through hole arranged on the vertical workbench and is connected to the lower end of the horizontal pressing plate.

[0044] The third guide rail pair provides guidance for the horizontal pressing plate, can improve the service life of the horizontal pressing cylinder, and ensures that the horizontal pressing cylinder runs stably and tightly presses the profile when pressing the profile.

[0045] The front side of the upper end of the horizontal pressing plate is provided with a second pressing plate, the upper end of the second pressing plate is provided with a second pressing block, a vertical long hole is arranged on the second pressing plate, the position of the second pressing block can be adjusted up and down, a screw passes through the vertical long hole to fix the second pressing plate on the horizontal pressing plate, the front end of the screw rod is connected to the second pressing block, and the rear end of the screw rod is screwed into the threaded hole in the upper end of the horizontal pressing plate to adjust the position of the second pressing block forward and backward.

[0046] The first pressing block and the second pressing block press the profile from the upper and lower positions respectively, which can improve the reliability of pressing, and the second pressing block can be adjusted in position up and down and forward and backward, which can adapt to profiles of different specifications, sizes and cross-sectional shapes.

[0047] The left vertical pressing device and the right vertical pressing device each further comprise a fourth guide rail pair arranged in parallel with the vertical pressing cylinder, the guide rail of the fourth guide rail pair is connected to the rear side of the vertical workbench, and the sliding block of the fourth guide rail pair is connected to the rear end of the vertical pressing plate.

[0048] The fourth guide rail pair provides guidance for the vertical pressing plate, can improve the service life of the vertical pressing cylinder, and ensures that the vertical pressing cylinder runs stably and tightly presses the profile when pressing the profile.

[0049] Beneficial effects:

[0050] Compared with the prior art, the sawing method of the 45-degree double-end cutting saw for the door and window frame and sash section material provided by the application can directly obtain the frame assembly length of the section material, and the material height of the section material does not need to be measured before cutting, the cutting efficiency and cutting accuracy are improved. Moreover, the fitting area of the section material with the horizontal workbench and the vertical workbench is larger, the section material can be tightly pressed on the workbench, the position deviation is not easy to occur during cutting, and higher cutting accuracy is ensured. The material releasing mechanism can move transversely under the driving of the saw blade of the material releasing cylinder after the end surface cutting of the section material is completed, the saw blade is separated from the end surface of the section material which has been cut, and the phenomenon of the saw blade returning to sweep the material is avoided. The super-short material cutting mechanism is arranged on the bracket, and the super-short material cutting can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 It is a schematic view of an aluminum alloy door and window frame material section.

[0052] Figure 2 It is a schematic view of the frame material with the two ends cut into 45-degree inclined surfaces,

[0053] Figure 3 、 Figure 4 It is a schematic view of the defects of the section material cut by the cutting saw mechanism of the prior art after the section material is assembled.

[0054] Figure 5 It is a front side schematic view of the application.

[0055] Figure 6 It is a rear side schematic view of the application.

[0056] Figure 7 It is a front side schematic view of the left sawing machine head in the application (after the machine head cover is removed).

[0057] Figure 8 It is a front side schematic view of the left sawing machine head in the application (after the machine head cover and the saw blade are removed).

[0058] Figure 9 It is a rear side schematic view of the left sawing machine head in the application (after the machine shell is removed).

[0059] Figure 10 It is a schematic view of the work feeding mechanism and the saw blade material releasing mechanism of the left sawing machine head in the application.

[0060] Figure 11 It is a schematic view of the material releasing return mechanism in the application.

[0061] Figure 12 It is a front side schematic view of the section material clamping device in the application.

[0062] Figure 13 It is a rear side schematic view of the section material clamping device in the application.

[0063] Figure 14 is a side view of the profile clamping device in the present application.

[0064] Figure 15 is a connection diagram of the left sawing machine head and the first linear guide rail in the present application.

[0065] Figure 16 is a diagram of the fixed clamp in the present application.

[0066] Figure 17 is a diagram of the bed, the left sawing machine head, the right sawing machine head, and the ultra-short material cutting mechanism in the present application.

[0067] Figure 18 is a front side diagram of the ultra-short material cutting mechanism in the present application (after removing the machine head cover).

[0068] Figure 19 is a front side diagram of the ultra-short material cutting mechanism in the present application (after removing the machine head cover and moving the material loading rack to the right).

[0069] Figure 20 is a rear side diagram of the ultra-short material cutting mechanism in the present application.

[0070] Figure 21 is a rear side diagram of the ultra-short material cutting mechanism in the present application (after removing the machine head cover and moving the material loading rack to the right).

[0071] Figure 22 is a diagram of the material loading rack, the air cylinder, the material moving air cylinder, and the auxiliary material pressing air cylinder of the ultra-short material cutting mechanism in the present application.

[0072] In the figure: 1 bed, 2 operation control console, 3 first linear guide rail,

[0073] 4 left sawing machine head, 41 left material cutting plate, 42 positioning rod, 43 blank profile, 44 horizontal workbench, 441 first long hole,

[0074] 45 left horizontal pressing device, 451 horizontal pressing air cylinder, 452 horizontal pressing plate, 453 second pressing plate, 4531 vertical long hole, 454 screw rod, 455 second pressing block, 456 first pressing block, 457 third guide rail pair, 458 first L-shaped support,

[0075] 46 left saw blade, 47 vertical workbench, 471 second long hole, 472 sawing opening, 48 positioning air cylinder,

[0076] 49 left vertical pressing device, 491 vertical pressing air cylinder, 492 vertical pressing plate, 493 fourth guide rail pair, 494 third pressing block, 495 second L-shaped support,

[0077] 410 box support, 411 second linear guide vice, 412 adjustment plate, 413 sliding plate, 414 bottom plate, 415 head guard, 416 sawing motor, 417 motor base, 418 first hinge shaft base, 419 cam, 420 first hinge shaft, 421 material allowing cylinder, 422 second hinge shaft, 423 second hinge shaft base, 424 working cylinder, 425 first spring base, 426 second spring base, 427 compression spring, 428 damping cylinder, 429 fixed clamp, 4291 through slot, 4292 vertical threaded hole, 4293 horizontal through hole,

[0078] 5 right sawing head, 51 transverse drive motor, 52 gear, 53 sliding block, 54 right lower material plate, 55 right saw blade, 56 right horizontal pressing device, 57 right vertical pressing device,

[0079] 6 super short material cutting mechanism, 61 bracket, 611 supporting leg, 612 roller, 62 fifth linear guide vice, 63 material loading frame, 631 positioning plate, 632 material supporting roller, 633 auxiliary pressing cylinder, 634 auxiliary pressing block, 64 cylinder, 65 material moving cylinder,

[0080] 7 rack. DETAILED DESCRIPTION

[0081] In order to clearly illustrate the technical features of the present application, the following will further describe the present application through non-limiting examples and in conjunction with the drawings.

[0082] The front, rear, left and right directions described in the present application are described according to the front, rear, left and right directions shown in the drawings. For the convenience of description, only parts related to the embodiments of the present application are shown.

[0083] Example one:

[0084] A sawing method of a 45-degree angle double-head cutting saw for door and window frame and sash section bars, which adopts the 45-degree angle double-head cutting saw for door and window frame and sash section bars to saw and process the section bars;

[0085] See Figure 5 , Figure 6 A 45-degree angle double-head cutting saw for door and window frame and sash section bars, which comprises a bed body 1, a left sawing head 4, a right sawing head 5, an electrical control box and an operation console 2. The left sawing head 4 is a fixed head, and the right sawing head 5 is a movable head, which can move left and right on the bed body 1. The electrical control box is arranged at the left end of the bed body 1 (not shown in the figure), and the operation console 2 is arranged at the front side of the bed body 1. The bed body 1 is horizontally provided with a first linear guide 3 and a rack 7 along the left-right direction.

[0086] See Figures 7 to 11The structure of the left sawing machine head 4 and the right sawing machine head 5 is basically the same, and each includes a bottom plate 414, a horizontal workbench 44, a vertical workbench 47, a profile clamping device, a sawing motor 416, a saw blade, and a work feed mechanism. The sawing motor 416 drives the saw blade to rotate, and the work feed mechanism drives the saw blade to feed and cut the profile. The work feed mechanism can adopt horizontal feed, vertical feed, swing feed, etc. In this embodiment, the work feed mechanism adopts a swing feed mechanism. The lower bottom surface of the bottom plate 414 is provided with a sliding block 53 matched with the first linear guide rail 3. The front end of the upper bottom surface of the bottom plate 414 is provided with a square box support 410. The horizontal workbench 44 is arranged at the upper end of the square box support 410. The vertical workbench 47 is arranged at the rear side of the square box support 410. The rear end of the bottom plate 414 is hingedly connected with a machine head cover 415, which is a known structure. An adjusting plate 412 is arranged on the bottom plate 414. A sliding plate 413 is slidably arranged on the adjusting plate 412. The swing feed mechanism is arranged on the sliding plate 413 and includes a first hinge shaft seat 418, a second hinge shaft seat 423, a motor seat 417 hingedly connected at the lower end of the first hinge shaft seat 418, and a work feed cylinder 424 hingedly connected to the second hinge shaft seat 423. The sawing motor 416 is arranged at the upper end of the motor seat 417. The saw blade is directly connected to the output shaft of the sawing motor 416. The axis of the sawing motor 416 is parallel to the horizontal workbench 44, so as to ensure that the saw blade is perpendicular to the horizontal workbench 44. The rod end of the work feed cylinder 424 is hingedly connected to the upper end of the motor seat 417. The vertical workbench 47 is provided with a sawing opening 472. The work feed cylinder 424 drives the motor seat 417 to swing on the first hinge shaft seat 418, drives the sawing motor 416 and the saw blade to feed and retract, and drives the saw blade to extend out of the sawing opening 472 to cut the profile when feeding.

[0087] The adjusting plate 412 and the sliding plate 413 are provided with a saw blade material allowing mechanism, which includes a material allowing driving mechanism, a material allowing return mechanism, and a second linear guide rail pair 411. The material allowing driving mechanism drives the sliding plate 413 to move horizontally away from the cut profile end surface on the adjusting plate 412. The material allowing return mechanism drives the sliding plate 413 to move reversely to return to the original position. The guide rail of the second linear guide rail pair 411 is arranged on the adjusting plate 412, and the sliding block is arranged on the sliding plate 413. The movement direction of the second linear guide rail pair 411 is parallel to the axis of the sawing motor 416.

[0088] The adjusting plate 412 and the sliding plate 413 are provided with a saw blade material allowing mechanism, which includes a material allowing driving mechanism, a material allowing return mechanism, and a second linear guide rail pair 411. The material allowing driving mechanism drives the sliding plate 413 to move horizontally away from the cut profile end surface on the adjusting plate 412. The material allowing return mechanism drives the sliding plate 413 to move reversely to return to the original position. The guide rail of the second linear guide rail pair 411 is arranged on the adjusting plate 412, and the sliding block is arranged on the sliding plate 413. The movement direction of the second linear guide rail pair 411 is parallel to the axis of the sawing motor 416.

[0089] The material allowing driving mechanism specifically comprises a first hinge shaft 420, a second hinge shaft 422 and a material allowing cylinder 421 and a cam 419 vertically arranged on the adjusting plate 412, the tail end of the material allowing cylinder 421 is hinged on the second hinge shaft 422, one end of the cam 419 is hinged with the first hinge shaft 420, the other end is hinged with the rod end of the material allowing cylinder 421, the side surface of the cam 419 abuts on the side surface of the slide plate 413, the material allowing cylinder 421 drives the cam 419 to rotate, the cam 419 drives the slide plate 413 to slide along the linear guide rail pair; see Figure 11 The material allowing return mechanism comprises a first spring seat 425 fixed on the adjusting plate 412 and a second spring seat 426 fixed on the slide plate 413 correspondingly, the first spring seat 425 and the second spring seat 426 are provided with a compression spring 427.

[0090] See Figures 7 to 9 、 Figures 12 to 14 The profile clamping device specifically comprises a left horizontal pressing device 45 and a left vertical pressing device 49 arranged on the left saw cutting machine head 4, and a right horizontal pressing device 56 and a right vertical pressing device 57 arranged on the right saw cutting machine head 5.

[0091] The left horizontal pressing device 45 and the right horizontal pressing device 56 both comprise a horizontal pressing cylinder 451 and a horizontal pressing plate 452, the horizontal pressing cylinder 451 is installed on the rear side of the vertical workbench 47, the rod end can be extended forward from the through hole arranged on the vertical workbench 47 and the square box support 410 and is hinged with the lower end of the horizontal pressing plate 452, the horizontal workbench 44 is provided with a first long hole 441 in the front-rear direction, the upper end of the horizontal pressing plate 452 is extended upward from the first long hole 441 to the surface of the horizontal workbench 44, the end is provided with a first pressing block 456, the horizontal pressing cylinder 451 drives the horizontal pressing plate 452 to slide in the first long hole 441;

[0092] In order to provide guidance for the horizontal pressing plate 452, the left horizontal pressing device 45 and the right horizontal pressing device 56 further comprise a third guide rail pair 457 arranged in parallel with the horizontal pressing cylinder 451, the sliding block of the third guide rail pair 457 is connected to the rear side of the vertical workbench 47 through a first L-shaped support 458, the front end of the guide rail of the third guide rail pair 457 can be extended forward from the through hole arranged on the vertical workbench 47 and the square box support 410 and is connected with the lower end of the horizontal pressing plate 452;

[0093] The front side of the upper end of the horizontal pressing plate 452 is provided with a second pressing plate 453, and the upper end of the second pressing plate 453 is provided with a second pressing block 455. The second pressing plate 453 is provided with a vertical long hole 4531, and the position of the second pressing block 455 can be adjusted up and down. A screw passes through the vertical long hole 4531 and is screwed into the bolt hole in the horizontal pressing plate 452 to fix the second pressing plate 453 on the horizontal pressing plate 452. The second pressing block 455 is connected to the front end of the screw rod 454, and the rear end of the screw rod 454 is screwed into the threaded hole in the upper end of the horizontal pressing plate 452 to adjust the position of the second pressing block 455 forward and backward. The first pressing block 456 and the second pressing block 455 are made of wear-resistant rubber blocks with a hardness of 90 degrees.

[0094] The left vertical pressing device 49 and the right vertical pressing device 57 each include a vertical pressing cylinder 491 and a vertical pressing plate 492. The vertical pressing cylinder 491 is installed on the rear side of the vertical workbench 47, and the rod end is hinged to the rear end of the vertical pressing plate 492. The vertical workbench 47 is provided with a vertical second long hole 471, and the front end of the vertical pressing plate 492 protrudes out of the surface of the vertical workbench 47 from the second long hole 471. The end is provided with a third pressing block 494, and the vertical pressing cylinder 491 drives the vertical pressing plate 492 to slide in the second long hole 471.

[0095] In order to provide guidance for the vertical pressing plate 492, the left vertical pressing device 49 and the right vertical pressing device 57 further include a fourth guide rail pair 493 arranged in parallel with the vertical pressing cylinder 491. The guide rail of the fourth guide rail pair 493 is connected to the rear side of the vertical workbench 47, and the slider of the fourth guide rail pair 493 is connected to the rear end of the vertical pressing plate 492 through a second L-shaped support 495.

[0096] The above is the basic structure of the left saw cutting head 4 and the right saw cutting head 5. The differences between the left saw cutting head 4 and the right saw cutting head 5 are described below.

[0097] Please see Figures 7 to 8 、 Figure 18 The left side of the horizontal workbench 44 of the left saw cutting head 4 is provided with a left scrap plate 41 inclined downward to the left, and the right side of the horizontal workbench 44 of the right saw cutting head 5 is provided with a right scrap plate 54 inclined downward to the right. The left side of the horizontal workbench 44 of the left saw cutting head 4 is provided with a profile end positioning device, which includes a positioning cylinder 48 vertically installed on the vertical workbench 47. The rod end of the positioning cylinder 48 is connected with a positioning rod 42. The left scrap plate 41 is provided with a through hole, and the positioning cylinder 48 drives the positioning rod 42 to protrude upward from the through hole to position the end of the profile. The distance between the positioning rod 42 and the saw cutting hole 472 is set to ensure that the length of the waste material after cutting is the shortest. In this embodiment, the positioning cylinder 48 is a three-axis cylinder.

[0098] Please see Figures 15 to 17In the embodiment, the lower bottom surface of the bottom plate 414 of the left sawing machine head 4 and the right sawing machine head 5 is provided with a sliding block 53 matched with the first linear guide rail 3, that is, the left sawing machine head 4 and the right sawing machine head 5 can move left and right on the guide rail; the difference is that the left sawing machine head 4 is not provided with a transverse driving mechanism, and in order to facilitate manufacturing, installation and adjustment, it can be manually forced to move on the guide rail. Like the double-head cutting saw of the prior art, the left sawing machine head 4 of the embodiment is provided as a fixed head, which is locked at the left end of the bed 1 through a fixed clamp 429; specifically, the cross section of the fixed clamp 429 is inverted U-shaped, the U-shaped cross section is matched with the cross section of the first linear guide rail 3, the bottom of the U-shaped cross section has an open downward through groove 4291 upward, the upper part of the fixed clamp 429 is provided with a vertical threaded hole 4292, a bolt is connected to the lower part of the bottom plate 414 through the vertical threaded hole 4292, the upper part of the fixed clamp 429 is further provided with a horizontal through hole 4293, and the threaded end of the bolt is connected with a nut after passing through the horizontal through hole 4293, so as to hold the fixed clamp 429 on the first linear guide rail 3, and the fixed clamp 429 is provided with two, corresponding to the two first linear guide rails 3, so as to fix the left sawing machine head 4. The right sawing machine head 5 is provided as a movable head, and the bottom plate 414 thereof is provided with a transverse driving motor 51, and the output shaft of the transverse driving motor 51 is connected with a gear 52 engaged with the rack 7; in the embodiment, the transverse driving motor 51 is a servo motor, which drives the right sawing machine head 5 to move left and right on the bed 1 along the first linear guide rail 3, and adjusts the distance between the right sawing machine head 5 and the left sawing machine head 4.

[0099] See Figures 5 to 6 、 Figures 18 to 22 In the embodiment, the right end of the bottom plate 414 of the right sawing machine head 5 is further connected with a bracket 61, the bracket 61 is provided with an ultra-short material cutting mechanism 6, including a material loading rack 63 and a secondary material pressing device arranged on the material loading rack 63, and a short material driving device and a fifth linear guide rail pair 62 are arranged between the material loading rack 63 and the bracket 61, the short material driving device drives the material loading rack 63 to move left and right on the bracket 61, and the guide rail of the fifth linear guide rail pair 62 is arranged on the lower bottom surface of the material loading rack, and the sliding block is arranged on the upper bottom surface of the bracket 61.

[0100] The auxiliary material pressing device comprises an auxiliary material pressing cylinder 633 and an auxiliary pressing block 634, the auxiliary material pressing cylinder 633 is vertically installed at the rear side of the material loading frame 63, and the auxiliary pressing block 634 is connected to the rod end of the auxiliary material pressing cylinder 633; the short material driving device is a cylinder 64, the tail end of the cylinder 64 is connected to the right end of the bracket 61, and the rod end of the cylinder 64 is connected to the left end of the material loading frame 63; the material loading frame 63 is provided with a positioning plate 631, the front side of the positioning plate 631 is coplanar with the front side of the vertical workbench 47; the material loading frame 63 is rotatably provided with a material supporting roller 632, and the plane formed by the upper generatrix of the material supporting roller 632 is coplanar with the upper plane of the horizontal workbench 44. The lower part of the right end of the bracket 61 is provided with a supporting leg 611, and the lower end of the supporting leg 611 is rotatably connected with a roller 612, which rolls along the first linear guide rail 3.

[0101] The rod end of the cylinder 64 and the left end of the material loading frame 63 are further provided with a material moving cylinder 65, the rod end of the material moving cylinder 65 is connected with the rod end of the cylinder 64, and the tail end of the material moving cylinder 65 is connected to the left end of the material loading frame 63.

[0102] In the embodiment, an electrical control box is arranged at the left end of the bed body 1, an industrial computer is arranged in the electrical control box, an operation console 2 is arranged at the front side of the bed body 1, and control buttons and a touch screen are arranged on the operation console 2. After parameters such as the length of the profile to be machined, the cutting angle of the two ends, and the height and width of the profile are input, the cutting operation can be performed, and the machining process can be monitored in the display.

[0103] The sawing motor 416 and the transverse driving motor 51 are connected with the control system of the industrial computer; the work advancing cylinder 424, the material releasing cylinder 421, the auxiliary material pressing cylinder 633, the cylinder 64 of the short material driving device, the material moving cylinder 65, the positioning cylinder 48, the horizontal pressing cylinder 451, and the vertical pressing cylinder 491 are connected with the gas source through pipelines and solenoid valves, and the solenoid valves are connected with the control system.

[0104] In the embodiment, the control system uses the host computer software + PLC control system, which is the prior art, and will not be described in detail.

[0105] In the present application, the transverse driving motor 51 drives the right sawing head 5 to move left and right along the first linear guide rail 3 on the bed 1, so as to adjust the interval between the left sawing head 4 and the right sawing head 5 for cutting profiles of different lengths; before placing the profile, the positioning cylinder 48 drives the positioning rod 42 to rise, so that the left end surface of the profile is placed against the positioning rod 42 to position the length direction of the profile; after cutting is completed, the positioning rod 42 is lowered, so that the waste head smoothly slides into the waste groove; the horizontal pressing cylinder 451, the vertical pressing cylinder 491 and the auxiliary pressing cylinder 633 respectively drive the pressing blocks connected thereto to press or release the profile; when it is necessary to cut an ultra-short profile, the cylinder 64 of the short profile driving device drives the material carrier 63 to move right, so as to shorten the distance between the left end surface of the profile and the right saw blade 55, and an ultra-short profile can be processed. The sawing motor 416 drives the saw blade to rotate, and the work advancing cylinder 424 drives the motor seat 417 to swing on the first hinge shaft seat 418, so as to drive the sawing motor 416 and the saw blade to work in advance to cut the profile; after cutting is completed, the material moving cylinder 65 drives the material carrier 63 to move right, so that the left end surface of the blank profile 43 is away from the right saw blade 55 by a distance of 5 mm, and then the left saw blade 46 and the right saw blade 55 move transversely by 1 mm under the drive of the material allowing cylinder 421, so that the saw teeth are separated from the end surface of the profile which has been cut, and the saw blade is prevented from sweeping the material during return. The above actions are controlled by the control system of the industrial computer; the specific control programming process is designed according to the characteristics of the profile to be processed and the actual operation needs, which does not belong to the structural range of the present application, and the circuit arrangement and connection for realizing the control can be designed according to the hardware structure of the present application, combined with the action purpose and the common sense in the electric control field, so as to overcome the problems, and therefore no detailed description is given.

[0106] Example two:

[0107] The method for processing the door and window frame profile by using the door and window frame profile 45-degree angle double-end cutting saw of example one comprises the following steps:

[0108] Please see Figure 1 、 Figure 2 Taking the processing of the door and window frame profile as an example, it is assumed that four segments A1, A2, A3 and A4 can be processed on a length 6000 mm blank profile 43 Figure 2 as shown in the length L=1450 mm finished profile:

[0109] S1. Adjust the distance between the right sawing head 5 and the left sawing head 4 according to the length size L of the finished profile to be processed in this batch; adjust the first pressing block 456 and the second pressing block 455 of the left vertical pressing device 49 and the right vertical pressing device 57 to appropriate positions;

[0110] S2. Loading, the blank profile 43 is placed on the horizontal workbench 44 by hand, and the mounting surface of the profile is leaned against the vertical workbench 47, the outer side of the profile is attached to the horizontal workbench 44, and the left end of the profile is abutted against the positioning rod 42;

[0111] S3. Clamping the profile, the left horizontal pressing device 45, the right horizontal pressing device 56, the left vertical pressing device 49, the right vertical pressing device 57, and the auxiliary pressing device are sequentially actuated to press the profile on the horizontal workbench 44, the vertical workbench 47, and the material carrier 63; the head guard 415 is lowered;

[0112] S4. Starting the work air cylinder 424, the rod end of the work air cylinder 424 is extended to drive the left saw blade 46 and the right saw blade 55 to swing and cut the profile;

[0113] S5. Starting the material moving air cylinder 65, the rod end of the material moving air cylinder 65 is retracted to drive the material carrier 63 and the blank profile 43 thereon to move rightward; at the same time, the positioning air cylinder 48 drives the positioning rod 42 to descend, and the waste head is lowered;

[0114] S6. Starting the material releasing air cylinder 421, the piston rod of the material releasing air cylinder 421 is extended to drive the cam 419 to rotate, the cam 419 pushes the sliding plate 413 and drives the saw blade motor and the saw blade to move transversely and separate from the end surface of the profile that has been cut;

[0115] S7. The rod end of the work air cylinder 424 is retracted to drive the left saw blade 46 and the right saw blade 55 to return along the cutting trajectory; the head guard 415 is raised;

[0116] S8. The piston rod of the material releasing air cylinder 421 is retracted to drive the cam 419 to rotate reversely, the spring pushes the sliding plate 413 and drives the saw blade motor and the saw blade to return;

[0117] S9. Loosening the clamping, the left horizontal pressing device 45, the right horizontal pressing device 56, the left vertical pressing device 49, the right vertical pressing device 57, and the auxiliary pressing device are loosened to release the clamping on the profile;

[0118] S10. Taking out the processed A1 section profile by hand;

[0119] S11. Repeating steps S2 to S10 to process A2 to A4 section profiles;

[0120] S12. Repeating the above steps S2 to S11 to process the next profile.

[0121] Example Three

[0122] The method for processing the ultra-short door and window frame profile by using the 45-degree angle double-head cutting saw for door and window frame profiles in Example One comprises the following steps:

[0123] Please seeFigure 1 、 Figure 2 For example, taking the machining of door and window frame material profile as an example, a length of 6000mm blank profile 43 can be machined into 29 segments of A1, A2, …, A30 Figure 2 The finished profile with a length of L=200mm is shown:

[0124] S1. According to the length size L=200mm of the finished product profile to be machined in this batch, the stroke of the cylinder 64 is L0=400mm, the distance between the right sawing machine head 5 and the left sawing machine head 4 is adjusted to 500mm; the first pressing block 456 and the second pressing block 455 of the left vertical pressing device 49 and the right vertical pressing device 57 are adjusted to the appropriate position;

[0125] S2. Feeding, manually placing the blank profile 43 on the horizontal workbench 44, and placing the mounting surface of the profile against the vertical workbench 47, the outer side of the profile is attached to the horizontal workbench 44, and the left end of the profile is abutted against the positioning rod 42;

[0126] S3. Clamping the profile, the left horizontal pressing device 45, the right horizontal pressing device 56, the left vertical pressing device 49, the right vertical pressing device 57, and the auxiliary pressing device act in turn to clamp the profile on the horizontal workbench 44, the vertical workbench 47, and the material carrier 63; the machine head guard 415 falls down;

[0127] S4. Start the work advancing cylinder 424 of the left sawing machine head 4, the rod end of the work advancing cylinder 424 extends out, driving the left saw blade 46 to swing and saw the profile;

[0128] S5. Loosen the clamping of the profile, loosen the clamping of the profile by the left horizontal pressing device 45, the right horizontal pressing device 56, the left vertical pressing device 49, and the right vertical pressing device 57;

[0129] S6. Start the cylinder 64 of the short material driving device, the rod end of the cylinder 64 retracts, driving the material carrier 63 and the blank profile 43 thereon to move 400mm to the right; at the same time, the positioning cylinder 48 drives the positioning rod 42 to descend, and the waste head falls down;

[0130] S7. Clamping the profile, the right horizontal pressing device 56 and the right vertical pressing device 57 act in turn to clamp the profile on the horizontal workbench 44 and the vertical workbench 47;

[0131] S8. Start the work advancing cylinder 424 of the right sawing machine head 5, the rod end of the work advancing cylinder 424 extends out, driving the right saw blade 55 to swing and saw the profile;

[0132] S9. Start the material moving cylinder 65, the rod end of the material moving cylinder 65 retracts, driving the material carrier 63 and the blank profile 43 thereon to move to the right;

[0133] S10. The material feeding cylinder 421 is started, the piston rod of the material feeding cylinder 421 extends to drive the cam 419 to rotate, the cam 419 pushes the slide plate 413 and drives the saw blade motor and the saw blade to move transversely, and the saw blade is separated from the end face of the profile which has been cut;

[0134] S11. The rod end of the work feeding cylinder 424 is retracted, the left saw blade 46 and the right saw blade 55 are driven to return along the cutting track; and the head guard 415 is lifted;

[0135] S12. The piston rod of the material feeding cylinder 421 is retracted to drive the cam 419 to rotate reversely, the spring pushes the slide plate 413 and drives the saw blade motor and the saw blade to return;

[0136] S13. The clamping is loosened, the right horizontal pressing device 56, the right vertical pressing device 57 and the auxiliary material pressing device are loosened to clamp the profile;

[0137] S14. The processed A1 section profile is manually taken out;

[0138] S15. The steps S2 to S14 are repeated to process A2 to A29 section profiles;

[0139] S16. The steps S2 to S15 are repeated to process the next profile.

[0140] In the description of the present application, it should be noted that the terms "left", "right", "front", "back", "up", "down", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0141] Unless otherwise explicitly specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0142] In addition to the technical features described in the specification, they are known to those skilled in the art.

[0143] The above-mentioned embodiments are only for understanding the present application, and are not intended to limit the technical solutions described in the present application. Based on the technical solutions described in the claims, those skilled in the related art can make various changes or modifications, and all equivalent changes or modifications should be covered in the protection scope of the claims of the present application.

Claims

1. A method of sawing a 45 degree angle double end cut for a door and window frame and sash section, characterised in that: The method adopts a 45-degree angle double-end cutting saw to cut the section bar, The 45-degree angle double-end cutting saw comprises a bed body, a left saw cutting head and a right saw cutting head are installed on the bed body, and the right saw cutting head is slidingly installed on the bed body; the left saw cutting head and the right saw cutting head each comprise a horizontal workbench, a vertical workbench, a section bar clamping device, a saw cutting motor, a saw blade and a work feeding mechanism, the saw cutting motor drives the saw blade to rotate, the saw blade is perpendicular to the horizontal workbench and forms a 45-degree angle with the vertical workbench; the saw blade let material mechanisms are arranged on the left saw cutting head and the right saw cutting head; a material carrying frame which can move leftward and rightward is arranged on the right saw cutting head; The left saw cutting head and the right saw cutting head further comprise a bottom plate which can slide on the bed body, the horizontal workbench and the vertical workbench are arranged at the front end of the bottom plate, and a head protective cover is hingedly connected to the rear end of the bottom plate; an adjusting plate is arranged on the bottom plate, a sliding plate is slidingly arranged on the adjusting plate, a first hinge shaft seat and a second hinge shaft seat are arranged on the sliding plate, a motor seat is hingedly connected to the first hinge shaft seat, the saw cutting motor is installed on the upper end of the motor seat, and the saw blade is connected to the output shaft of the saw cutting motor; a work feeding cylinder is hingedly connected to the second hinge shaft seat, the rod end of the work feeding cylinder is hingedly connected to the upper end of the motor seat; the work feeding cylinder drives the motor seat to swing on the first hinge shaft seat, drives the saw cutting motor and the saw blade to work feeding and cut the section bar, and the saw blade let material mechanisms are arranged between the adjusting plate and the sliding plate; The right end of the bottom plate of the right saw cutting head is connected with a bracket, an ultra-short material cutting mechanism is arranged on the bracket, and the ultra-short material cutting mechanism comprises a material carrying frame and a secondary material pressing device arranged on the material carrying frame; a short material driving device and a fifth linear guide rail pair are arranged between the material carrying frame and the bracket, the short material driving device drives the material carrying frame to move leftward and rightward on the bracket, and the guide rail of the fifth linear guide rail pair is installed on the lower bottom surface of the material carrying frame and the sliding block is installed on the upper bottom surface of the bracket; The secondary material pressing device comprises a secondary material pressing cylinder and a secondary pressing block, the secondary material pressing cylinder is vertically installed on the rear side of the material carrying frame, and the secondary pressing block is connected to the rod end of the secondary material pressing cylinder; the short material driving device is a cylinder, the tail end of the cylinder is connected to the right end of the bracket, and the rod end of the cylinder is connected to the left end of the material carrying frame; a positioning plate is arranged on the material carrying frame, and the front side of the positioning plate is coplanar with the front side of the vertical workbench; a material carrying roller is rotatably arranged on the material carrying frame, and the plane formed by the upper generatrix of the material carrying roller is coplanar with the upper plane of the horizontal workbench; A material moving cylinder is further arranged between the rod end of the cylinder and the left end of the material carrying frame, the rod end of the material moving cylinder is connected to the rod end of the cylinder, and the tail end of the material moving cylinder is connected to the left end of the material carrying frame; The specific steps of cutting the section bar are as follows: S1. A workman places a blank section bar on the horizontal workbench and leans the mounting surface of the section bar against the vertical workbench, and the outer side surface of the section bar is attached to the horizontal workbench; S2. The section bar clamping device clamps the section bar; S3. The work feeding mechanism drives the saw blade to work feeding and cut the section bar; S4. The material carrying frame and the blank section bar move rightward; S5. The saw blade let material mechanism drives the saw blade motor and the saw blade to move transversely and separate from the end surface of the section bar which has been cut; S6. The work feeding mechanism drives the left saw blade and the right saw blade to return along the cutting track; S7. The section bar clamping device releases the clamping of the section bar. S8. Artificially take out the finished product profile; S9. Repeat steps S2 to S8, process the next section of profile; When the super-short material needs to be cut, the cylinder of the short material driving device drives the material carrier to move to the right, shortening the distance between the left end face of the profile and the right saw blade, and the super-short material can be processed. The specific steps are as follows: S1. Manually place the blank profile on the horizontal workbench, and place the mounting surface of the profile against the vertical workbench, and the outer side of the profile against the horizontal workbench; S2. The left horizontal pressing device, the right horizontal pressing device, the left vertical pressing device, the right vertical pressing device, and the auxiliary pressing device act in turn to press the profile on the horizontal workbench, the vertical workbench and the material carrier; S3. The left saw blade is driven by the left sawing mechanism to advance and cut the profile; S4. The left horizontal pressing device, the right horizontal pressing device, the left vertical pressing device, and the right vertical pressing device loosen the clamping of the profile; S5. The material carrier and the blank profile on it move to the right; S6. The right horizontal pressing device and the right vertical pressing device press the profile again; S7. The right saw blade is driven by the right sawing mechanism to advance and cut the profile; S8. The sawing material allowing mechanism drives the saw blade motor and the saw blade to move horizontally away from the end face of the profile that has been cut; S9. The left saw blade and the right saw blade return along the cutting trajectory; S10. The profile clamping device loosens the clamping of the profile; S11. Artificially take out the finished product profile; S12. Repeat steps S2 to S11, process the next section of super-short material profile.

2. The method of sawing a 45 degree angle double end cut for a door and window frame and sash section according to claim 1, wherein: The sawing material allowing mechanism includes a material allowing driving mechanism, a material allowing return mechanism and a second linear guide rail pair. The material allowing driving mechanism drives the sliding plate to move horizontally away from the end face of the profile that has been cut on the adjusting plate. The material allowing return mechanism drives the sliding plate to move reversely to return to the original position. The guide rail of the second linear guide rail pair is installed on the adjusting plate, and the sliding block is installed on the sliding plate. The movement direction of the second linear guide rail pair is parallel to the axis of the sawing motor.

3. The method of sawing a 45 degree angle double end cut for a door and window frame and sash section according to claim 2, wherein: The material allowing driving mechanism includes a first hinge shaft, a second hinge shaft, a material allowing cylinder and a cam vertically arranged on the adjusting plate. The tail end of the material allowing cylinder is hinged to the second hinge shaft. One end of the cam is hinged to the first hinge shaft, and the other end is hinged to the rod end of the material allowing cylinder. The side surface of the cam abuts against the side surface of the sliding plate. The material allowing cylinder drives the cam to rotate, and the cam drives the sliding plate to slide along the linear guide rail pair. The material allowing return mechanism includes a first spring seat fixed to the adjusting plate and a second spring seat fixed to the sliding plate. A compression spring is arranged between the first spring seat and the second spring seat.

4. The method of sawing a 45 degree angle double end cut for a door and window frame and sash section according to claim 1, wherein: The left side of the left sawing head horizontal workbench is provided with a left downward inclined offcut plate, and the right side of the right sawing head horizontal workbench is provided with a right downward inclined offcut plate. The left side of the left sawing head horizontal workbench is provided with a profile end positioning device, which includes a positioning cylinder vertically installed on the vertical workbench. The rod end of the positioning cylinder is connected with a positioning rod. The left offcut plate is provided with a through hole. The positioning cylinder drives the positioning rod to extend upward from the through hole to position the end of the profile.

5. A method of sawing a 45 degree angled double ended cut to a door and window frame or sash section according to any one of claims 1 to 4, characterised in that: The profile clamping device comprises a left horizontal pressing device and a left vertical pressing device arranged on the left sawing machine head, and a right horizontal pressing device and a right vertical pressing device arranged on the right sawing machine head; The left horizontal pressing device and the right horizontal pressing device each comprise a horizontal pressing cylinder and a horizontal pressing plate, the horizontal pressing cylinder is installed on the rear side of the vertical workbench, the rod end can extend forward from the through hole arranged on the vertical workbench and is hinged to the lower end of the horizontal pressing plate, the horizontal workbench is provided with a first long hole in the front-rear direction, the upper end of the horizontal pressing plate extends upward from the first long hole to the table top of the horizontal workbench, the end portion is provided with a first pressing block, and the horizontal pressing cylinder drives the horizontal pressing plate to slide in the first long hole; The left vertical pressing device and the right vertical pressing device each comprise a vertical pressing cylinder and a vertical pressing plate, the vertical pressing cylinder is installed on the rear side of the vertical workbench, the rod end is hinged to the rear end of the vertical pressing plate, the vertical workbench is provided with a second long hole in the vertical direction, the front end of the vertical pressing plate extends forward from the second long hole to the table top of the vertical workbench, the end portion is provided with a third pressing block, and the vertical pressing cylinder drives the vertical pressing plate to slide in the second long hole.

6. The method of sawing a 45 degree angle double end cut for a door and window frame or sash section according to claim 5 wherein: The left horizontal pressing device and the right horizontal pressing device further comprise a third guide rail pair arranged in parallel with the horizontal pressing cylinder, the slide block of the third guide rail pair is connected to the rear side of the vertical workbench, and the front end of the guide rail of the third guide rail pair can extend forward from the through hole arranged on the vertical workbench and is connected to the lower end of the horizontal pressing plate; The front side of the upper end of the horizontal pressing plate is provided with a second pressing plate, the upper end portion of the second pressing plate is provided with a second pressing block, the second pressing plate is provided with a vertical long hole, the position of the second pressing block can be adjusted up and down, a screw passes through the vertical long hole to fix the second pressing plate on the horizontal pressing plate, the second pressing block is connected to the front end of a screw rod, the rear end of the screw rod is threadedly connected to a threaded hole in the upper end of the horizontal pressing plate, and the position of the second pressing block can be adjusted forward and backward; The left vertical pressing device and the right vertical pressing device further comprise a fourth guide rail pair arranged in parallel with the vertical pressing cylinder, the guide rail of the fourth guide rail pair is connected to the rear side of the vertical workbench, and the slide block of the fourth guide rail pair is connected to the rear end of the vertical pressing plate.

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