Cutting device for door and window production

Abstract

The invention discloses a cutting device for door and window production, and relates to the related technical field of door and window production, the cutting device comprises a base, a fixed seat is fixedly mounted on one side of the upper end of the base, a sliding seat is slidably mounted at the upper end of the base, a linkage table is further slidably mounted at the upper end of the fixed seat, and a linkage mechanism is mounted at the lower end of the linkage table; the linkage table is arranged to support the middle end of a door and window profile, bending of the middle end of a door and window is prevented, the linkage mechanism is arranged to synchronize movement of the linkage table and the sliding seat, and the linkage mechanism guarantees that the linkage table is located in the middle of the fixed seat and the sliding seat; the door and window profile is conveyed step by step and moved to the working area of the fixed seat and the sliding seat, after the door and window profile is cut, the feeding mechanism is reversely operated, the door and window profile can be taken out, and in the feeding and taking process, an operator is far away from the device body, and the body part of the operator is prevented from invading the working area of the device.

Description

Technical Field

[0001] This invention relates to the technical field of door and window manufacturing, specifically a cutting device for door and window manufacturing. Background Technology

[0002] A door and window cutting device is a specialized machine for the efficient and precise cutting of aluminum alloy or PVC profiles. Its core function is to cut long strips of door and window profiles into the required workpieces according to design dimensions and angles, ensuring the accuracy and strength of subsequent assembly. This type of device typically consists of a machine body, a sawing mechanism, a clamping device, a positioning device, and safety protection components. The sawing mechanism often uses carbide saw blades or diamond tools, combined with high-speed rotation to achieve a smooth, burr-free cut. The clamping device is mostly mechanical or pneumatic, which can stably fix the thin-walled profile during cutting, preventing deformation caused by vibration or uneven force. The positioning device provides precise control of length and angle; some models are equipped with an adjustable rotary cutting mechanism to meet the processing requirements of common joining angles such as 45° and 90°, thus ensuring the sealing and aesthetics of the door and window frame splices. Meanwhile, considering safety and environmental factors, the cutting device is usually equipped with a protective cover, limit protection, and a chip collection and removal system, reducing operator risk and maintaining a clean working environment.

[0003] Most existing door and window cutting devices rely on manual feeding. During this process, especially when adjusting the placement of door and window profiles, the operator's body parts may encroach on the working area of ​​the cutting device. If the operator's hands, arms, or other parts accidentally come into contact with the sawing mechanism or clamping device, accidents such as cuts, crushing, or pinching injuries are highly likely. When cutting long door and window profiles, the two ends of the profile are placed under the clamping device, but the middle section is not adequately supported, making it prone to bending. To address the aforementioned problems, a cutting device for door and window production is provided. Summary of the Invention

[0004] The purpose of this invention is to provide a cutting device for door and window production, in order to solve the problems mentioned in the background art, that most existing door and window cutting devices are manually fed, the operator's body parts may intrude into the working area of ​​the cutting device, leading to production accidents, and when cutting long door and window profiles, the two ends of the profile are placed at the clamping device, which easily causes bending.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cutting device for door and window production, comprising a base, a fixed seat fixedly installed on one side of the upper end of the base, a sliding seat slidably installed on the upper end of the base, and a linkage table slidably installed on the upper end of the fixed seat, wherein the linkage table is located between the fixed seat and the sliding seat. A linkage mechanism is installed at the lower end of the linkage table. The linkage mechanism is used to synchronize the movement of the linkage table and the sliding seat, so that the linkage table is kept in the middle position between the fixed seat and the sliding seat. Both the fixed seat and the sliding seat are equipped with a feeding mechanism on their end faces. The feeding mechanism is used to transport the door and window profiles to the working area of ​​the fixed seat and the sliding seat.

[0006] In a further embodiment, a cutting box is rotatably installed inside both the fixed seat and the sliding seat. The cutting box is used to cut the door and window profiles placed on the fixed seat and the sliding seat, and the two cutting boxes are arranged symmetrically.

[0007] In a further embodiment, the linkage mechanism includes a slide rail, a scissor lift, and a rotating shaft. The slide rail is fixedly installed on the upper end of the base, and the rotating shaft is slidably installed in the groove of the slide rail. The scissor lift is composed of multiple rods that are rotatably connected in an X-shape, and the upper end of the rotating shaft is rotatably inserted into the rotatable connection of the rods.

[0008] In a further embodiment, two feeding mechanisms mounted on a fixed base and a sliding base are symmetrically arranged, and storage slots matching the feeding mechanisms are provided on both sides of the linkage table.

[0009] In a further embodiment, the feeding mechanism includes a convex plate, a feeding bar, and a rotating rod. The convex plates of the two feeding mechanisms are respectively fixedly installed on the end faces of the fixed seat and the sliding seat. A rotating shaft is fixedly connected to one end of the side of the two rotating rods. The rotating rods are rotatably installed on the end faces of the convex plates through the rotating shafts. The feeding bar is rotatably connected to the other end of the rotating rod.

[0010] In a further embodiment, a first motor is installed inside the rotating rod, and a rotating rod is fixedly connected to the output shaft of the first motor. The first motor is used to drive the rotating rod to rotate.

[0011] In a further embodiment, an eccentric wheel is sleeved on the outer wall of the rotating shaft of the rotating rod, the rotating shaft is the rotation center of the eccentric wheel, and a collar is rotatably sleeved on the outer wall of the eccentric wheel, with a connecting rod fixedly connected between the two collars.

[0012] In a further embodiment, a fixing mechanism is installed on the end face of both the fixed seat and the sliding seat. The fixing mechanism is used to fix the door and window profiles located in the working area of ​​the fixed seat and the sliding seat.

[0013] In a further embodiment, the fixing mechanism includes a fixing rod, a sliding frame, and a sliding plate. The sliding frames of the two fixing mechanisms are respectively fixedly connected to the end faces of the fixing seat and the sliding seat. The sliding plate is slidably inserted into the upper end of the sliding frame. The fixing rod is fixedly connected to the upper end of the sliding plate, and the output rod of the fixing rod faces the cutting box.

[0014] In a further embodiment, a lead screw is rotatably mounted inside the sliding frame, the lead screw is threadedly connected to the sliding plate, the lead screw is used to drive the sliding plate to slide, and a second motor for driving the lead screw to rotate is fixedly mounted at the lower end of the sliding frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention is a cutting device for door and window production, which supports the middle end of door and window profiles by setting a linkage table to prevent the middle end of the door and window from bending.

[0016] 2. By setting a linkage mechanism to synchronize the movement of the linkage platform and the sliding seat, the linkage mechanism ensures that after the sliding seat slides away from the fixed seat, the linkage platform remains in the middle position between the fixed seat and the sliding seat.

[0017] 3. By setting up a feeding mechanism, the door and window profiles are gradually conveyed and finally moved to the working area of ​​the fixed seat and the sliding seat. After the door and window profiles are cut, the feeding mechanism is reversed to remove the door and window profiles. During the feeding and removal process, the operator is kept away from the main body of the device to prevent the operator's body parts from entering the working area of ​​the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a cutting device for door and window production proposed in this invention. Figure 2 This invention provides a cutting device for door and window manufacturing. Figure 1 Enlarged view of point A in the middle; Figure 3 This invention provides a cutting device for door and window manufacturing. Figure 1 Enlarged view at point B in the middle; Figure 4 This is a schematic diagram of the feeding mechanism of a cutting device for door and window production proposed in this invention; Figure 5 This is a schematic diagram of the linkage drive structure of a cutting device for door and window production proposed in this invention; Figure 6 This is a diagram showing the motion trajectory of the feeding strip in a cutting device for door and window production proposed in this invention. Figure 7 This is a schematic diagram of the overall structure of the fixing mechanism of a cutting device for door and window production proposed in this invention; Figure 8 This is an exploded view of the fixing mechanism of a cutting device for door and window production proposed in this invention; Figure 9 This is a cross-sectional view of the sliding frame and sliding plate of a cutting device for door and window production proposed in this invention; Figure 10This is a partial structural diagram of the linkage mechanism of a cutting device for door and window production proposed in this invention; Figure 11 This is a schematic diagram of the connection structure of the linkage table and linkage mechanism of a cutting device for door and window production proposed in this invention.

[0019] In the diagram: 1. Base; 2. Fixed seat; 3. Sliding seat; 4. Cutting box; 5. Linkage table; 6. Feeding mechanism; 61. Protruding plate; 62. Feeding bar; 63. Rotating rod; 631. Eccentric wheel; 632. Collar; 633. Connecting rod; 7. Linkage mechanism; 71. Slide rail; 72. Scissor lift; 73. Rotating shaft; 8. Fixed mechanism; 81. Fixed rod; 82. Sliding frame; 83. Sliding plate; 831. Lead screw. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-11 This embodiment provides a cutting device for door and window production, including a base 1, with a fixed seat 2 and a sliding seat 3 disposed on the upper end of the base 1. The fixed seat 2 is fixedly connected to one side of the upper end of the base 1. Rails are provided on both sides of the upper end of the base 1. Track grooves matching the rails are formed on both sides of the lower end of the sliding seat 3, allowing the sliding seat 3 to slide on the upper end of the base 1. A drive wheel is installed inside the sliding seat 3, and the drive wheel is driven by a motor to rotate, controlling the sliding of the sliding seat 3. A working surface is formed on one side of the upper end of the fixed seat 2 and the sliding seat 3, on which door and window profiles are placed for cutting.

[0022] Both the fixed base 2 and the sliding base 3 have cutting boxes 4 rotatably mounted inside them, and the cutting boxes 4 in the fixed base 2 and the sliding base 3 are symmetrically arranged. A circular saw is installed inside the cutting box 4, and the rotating circular saw can extend from its end face into the working plane to cut the door and window profiles on the working planes of the fixed base 2 and the sliding base 3. Hydraulic rods for controlling the rotation of the cutting box 4 are installed inside the fixed base 2 and the sliding base 3. The cutting angle of the door and window profiles can be adjusted by adjusting the angle of the cutting box 4. The above description refers to the LJZ2-CNC-500×4200 rotary precision saw and is existing technology.

[0023] However, in actual operation, it was found that after the sliding seat 3 slids away from the fixed seat 2, the two ends of the longer profile were placed on the upper ends of the fixed seat 2 and the sliding seat 3, respectively. The middle part of the profile, lacking support, was prone to sagging due to gravity. This bending not only affected the cutting accuracy but could also lead to unevenness of the cut surface, thus affecting the quality of the finished product. To stabilize the cutting of the profile and prevent bending, a linkage table 5 was slidably installed on the rail at the upper end of the base 1. The linkage table 5 is located between the fixed seat 2 and the sliding seat 3. After the two ends of the profile were placed on the upper ends of the fixed seat 2 and the sliding seat 3, the middle end of the profile rested on the linkage table 5. The linkage table 5 provided additional support for the profile, keeping it horizontal during cutting, reducing bending caused by gravity, and thus improving cutting accuracy.

[0024] like Figure 1 , Figure 10 and Figure 11 As shown, a linkage mechanism 7 is installed on the upper end of the base 1. The linkage mechanism 7 is used to move the sliding seat 3 and the linkage platform 5, so that the linkage platform 5 is kept in the middle position between the fixed base 2 and the sliding seat 3. Specifically, the linkage mechanism 7 includes a slide rail 71, a scissor lift 72, and a rotating shaft 73. The slide rail 71 is fixedly installed on the upper end of the base 1, and the rotating shaft 73 is slidably installed in the rail groove of the slide rail 71. The scissor lift 72 is composed of multiple rods that are rotatably connected in an X-shape (the structure of the scissor lift 72 is referenced to the lifting structure in the middle of the MQ22-300 / 60 lift). The upper end of the rotating shaft 73 is rotatably inserted into the rotatable connection of the rods. Specifically, the middle part of the scissor lift 72 (located at the rotatable connection of the rods that are rotatably connected in the middle) is connected to the lower central axis of the linkage platform 5 through the rotating shaft 73. The two ends of the scissor lift 72 (located at the rotatable connection of the rods that are rotatably connected in an X-shape at both ends) are rotatably connected to the lower ends of the fixed base 2 and the sliding seat 3, respectively.

[0025] After the sliding seat 3 slides away from the fixed seat 2 at the upper end of the base 1, the sliding seat 3 pulls the scissor lift 72, increasing its length (decreasing its width). At this time, the linkage table 5 is simultaneously pulled by the scissor lift 72, maintaining its position between the fixed seat 2 and the sliding seat 3. Similarly, after the sliding seat 3 slides closer to the fixed seat 2, it squeezes the scissor lift 72, reducing its length (increasing its width) and causing the linkage table 5 to slide towards the fixed seat 2. After the fixed seat 2 and the sliding seat 3 are in contact with both sides of the linkage table 5, the scissor lift 72 completely retracts to the lower end of the fixed seat 2, the sliding seat 3, and the linkage table 5. The linkage mechanism 7 enables the sliding seat 3 and the linkage table 5 to move synchronously at different speeds, ensuring that the linkage table 5 always remains in the middle position between the fixed seat 2 and the sliding seat 3.

[0026] like Figure 3 , Figures 7 to 9As shown, a fixing mechanism 8 is installed on the end face of the fixed seat 2 and the sliding seat 3. Specifically, the fixing mechanism 8 includes a fixing rod 81, a sliding frame 82 and a sliding plate 83. The sliding frames 82 of the two fixing mechanisms 8 are fixedly connected to the end face of the fixed seat 2 and the sliding seat 3 respectively. The sliding plate 83 is slidably inserted into the upper end of the sliding frame 82. The fixing rod 81 is fixedly connected to the upper end of the sliding plate 83, and the output rod of the fixing rod 81 faces the cutting box 4.

[0027] A lead screw 831 is rotatably mounted inside the sliding frame 82. The lead screw 831 is threadedly connected to the sliding plate 83. A second motor is fixedly mounted at the lower end of the sliding frame 82, and the lower end of the lead screw 831 is fixedly connected to the output shaft of the second motor. The second motor is a servo motor with a reference model number of HG-SR102BJ. Starting the second motor will drive the lead screw 831 to rotate inside the sliding frame 82, thereby driving the sliding plate 83 to slide within the sliding frame 82. The fixing rod 81 is an electric push rod with a reference model number of TOMUU-U6. When the sliding plate 83 slides upward, and the height of the sliding plate 83 exceeds the working plane of the fixed seat 2 and the sliding seat 3, the fixing rod 81 can be activated. After the output rod of the fixing rod 81 extends into the working plane of the fixed seat 2 and the sliding seat 3, it contacts the door and window profile, applies pressure to the profile, pushes the profile to contact the cutting box 4, and finally cooperates with the cutting box 4 to clamp the door and window profile.

[0028] The rotation of the lead screw 831 drives the fixed rod 81 to move up and down via the sliding plate 83. After the fixed rod 81 moves downwards, it avoids encroaching on the profile's conveying path (the path along which the feeding mechanism 6 moves the profile), thus preventing interference with the profile conveying process and ensuring smooth and safe feeding. This design has significant advantages. First, the up-and-down movement mechanism of the fixed rod 81 effectively avoids obstacles that may occur during profile conveying, reducing the risk of downtime or malfunctions caused by the fixed rod 81 interfering with feeding. Second, the cooperation between the sliding plate 83 and the lead screw 831 makes the movement of the fixed rod 81 more flexible and precise, allowing for quick position adjustments as needed, further improving operational convenience. Furthermore, this design improves the efficiency of the entire cutting process, ensuring seamless connection between profile conveying, fixing, and cutting, and reducing time wastage due to improper equipment configuration.

[0029] In existing door and window profile cutting devices, when manually loading materials, the operator's body parts (mostly hands) may encroach on the device's working area. If the device is accidentally activated, the cutting saw extending from the end face of the fixing mechanism 8 and the cutting box 4 can easily cause bodily injury to the operator. To prevent the operator's body parts from encroaching on the device's working area during the placement of door and window profiles, a feeding mechanism 6 is installed on the end face of both the fixing seat 2 and the sliding seat 3.

[0030] like Figure 1 , Figure 2 and Figure 4 As shown, two feeding mechanisms 6 are symmetrically arranged on the fixed base 2 and the sliding base 3. The linkage table 5 has storage slots on both sides that match the feeding mechanisms 6. Specifically, each feeding mechanism 6 includes a protruding plate 61, a feeding bar 62, and two rotating rods 63. The protruding plates 61 of the two feeding mechanisms 6 are respectively fixedly installed on the end faces of the fixed base 2 and the sliding base 3. A rotating shaft is fixedly connected to one end of each of the two rotating rods 63, and the rotating rods 63 are rotatably mounted on the end faces of the protruding plates 61 via the rotating shafts. The feeding bar 62 is rotatably connected to the other end of the rotating rods 63. A first motor is installed inside the rotating rod 63. The first motor is a high-torque motor with a reference model number of G030L130. One rotating rod 63 is fixedly connected to the output shaft of the first motor. Starting the first motor will drive the rotating rod 63 to rotate.

[0031] Two rotating rods 63 can rotate synchronously via the feed bar 62. The rotating rod 63 driven by the first motor is the active rotating rod 63, and the other rotating rod 63 driven by the feed bar 62 is the driven rotating rod 63. When both rotating rods 63 have rotated to a horizontal state, after the rotating rods 63 continue to rotate, the driven rotating rod 63 has a probability of rotating in the opposite direction, thus causing the two rotating rods 63 to rotate synchronously but in opposite directions. At this time, the movable feed bar 62 cannot maintain balanced movement (during the rotation of the feed bar 62 via the rotating rods 63, one side of the feed bar 62 always remains in an upward state). In order to maintain the movement state of the feed bar 62 and prevent the feed bar 62 from tilting, an eccentric wheel 631 is sleeved on the outer wall of the rotating shaft of the rotating rod 63. The rotating shaft is the rotation center of the eccentric wheel 631. A collar 632 is rotatably sleeved on the outer wall of the eccentric wheel 631, and a connecting rod 633 is fixedly connected between the two collars 632. Among them, with Figure 4 and Figure 5 For example, the central axis of the eccentric wheel 631 is perpendicular to the rotating rod 63. The collar 632 and the connecting rod 633 keep the two eccentric wheels 631 rotating synchronously (the two eccentric wheels 631 have the same angle with the bottom surface). The rotating rod 63 rotates in coordination with the feeding bar 62 and the eccentric wheel 631, so that during the rotation of the feeding bar 62, one side of the feeding bar 62 always remains in an upward state.

[0032] One end of the protruding plate 61 extends from the end face of the base 1. The linkage table 5 is identical to the protruding plate 61, with one end also extending out, and the linkage table 5 is flush with the protruding plate 61. Both the protruding plate 61 and the rotating rod 63 have protrusions at their upper ends. The movement trajectory of the door and window profiles is as follows... Figure 6As shown, firstly, the door and window profiles are placed one by one on the linkage table 5 and the two protruding plates 61, with the profile positioned between the two protrusions. The profile is then slid laterally to align with the cutting box 4 and adjust its cutting position. Next, the first motor is started, driving the feed bar 62 to rotate via the rotating rod 63. Once the upper end of the feed bar 62 is flush with the upper end of the protruding plate 61, the feed bar 62 contacts the profile. As the feed bar 62 continues to rotate, it lifts the profile and moves it towards the cutting box 4. The continued rotation of the feed bar 62 moves the profile onto the working plane of the fixed seat 2 and the sliding seat 3. Finally, the fixing mechanism 8 and the cutting box 4 are activated to fix and cut the profile. Reversing the start of the first motor causes the rotating rod 63 to rotate in the opposite direction, moving the cut profile and detaching it from the working plane of the fixed seat 2 and the sliding seat 3.

[0033] Compared to existing door and window cutting devices, this embodiment innovates and improves in several aspects, aiming to enhance the cutting efficiency and safety of door and window profiles. Existing door and window cutting devices often suffer from unstable feeding, profile deformation, and potential safety hazards for operators during operation. This embodiment overcomes these shortcomings through optimized design.

[0034] First, the linkage platform 5 provides stable support for the middle section of the door and window profile, preventing the middle end of longer profiles from bending due to gravity. Simultaneously, the linkage platform 5 ensures the profile remains balanced during cutting, avoiding cutting errors caused by an unstable center of gravity. The linkage mechanism 7 effectively drives the linkage platform 5 to slide between the fixed seat 2 and the sliding seat 3 (primarily by the sliding seat 3 and the linkage platform 5 moving synchronously at different speeds), ensuring the linkage platform 5 is always positioned in the middle. This design not only improves the support stability of the profile but also significantly enhances work efficiency.

[0035] Secondly, the design of the feeding mechanism 6 allows the profile to move smoothly onto the working planes of the fixed seat 2 and the sliding seat 3. Compared with the prior art, the feeding mechanism 6 in this embodiment adopts a symmetrical structure, and with the linkage of the convex plate 61, the feeding bar 62 and the rotating rod 63, it ensures the stability and efficiency of the feeding process. At the same time, the reverse rotation function of the feeding mechanism 6 can transfer the cut profile from the working plane, thereby avoiding the operator from approaching the working range of the cutting device during the conveying and removal of the profile.

[0036] The design of the fixing mechanism 8, combined with the function of the cutting box 4, effectively fixes the profile, ensuring that the profile does not shift during the cutting process. The scalability of this design allows the fixing mechanism 8 to automatically adjust to profiles of different sizes, avoiding conflicts with the profile conveying system. This flexible adaptability solves the interference problem between the fixing mechanism 8 and the feeding system in existing technologies, ensuring the continuity and safety of the cutting process.

[0037] Furthermore, the overall system coordination has been significantly improved. Through the use of the eccentric wheel 631, the feed bar 62 maintains one side facing upwards during its oscillation, preventing tilting during rotation. This design not only improves feeding accuracy but also ensures the stability of the profile throughout the entire cutting process.

[0038] Finally, this embodiment also makes significant improvements in safety. Through the rational configuration of the feeding mechanism 6 and the fixing mechanism 8, operators can effectively avoid intruding their body parts into the working area during material loading and cutting, thereby reducing safety hazards caused by misoperation. This design fully considers the safety needs of operators and embodies a human-centered design philosophy.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for door and window production, comprising a base (1), wherein a fixed seat (2) is fixedly installed on one side of the upper end of the base (1), and a sliding seat (3) is slidably installed on the upper end of the base (1), characterized in that: The upper end of the fixed seat (2) is also slidably mounted with a linkage platform (5), and the linkage platform (5) is located between the fixed seat (2) and the sliding seat (3); The lower end of the linkage platform (5) is equipped with a linkage mechanism (7), which is used to synchronize the movement of the linkage platform (5) and the sliding seat (3) so that the linkage platform (5) is kept in the middle position between the fixed seat (2) and the sliding seat (3). The end faces of the fixed seat (2) and the sliding seat (3) are each equipped with a feeding mechanism (6), which is used to transport the door and window profiles to the working area of ​​the fixed seat (2) and the sliding seat (3).

2. The cutting device for door and window production according to claim 1, characterized in that: Both the fixed seat (2) and the sliding seat (3) are rotatably installed with cutting boxes (4). The cutting boxes (4) are used to cut the door and window profiles placed on the fixed seat (2) and the sliding seat (3), and the two cutting boxes (4) are symmetrically arranged.

3. The cutting device for door and window production according to claim 1, characterized in that: The linkage mechanism (7) includes a slide rail (71), a scissor lift (72) and a rotating shaft (73). The slide rail (71) is fixedly installed on the upper end of the base (1). The rotating shaft (73) is slidably installed in the groove of the slide rail (71). The scissor lift (72) is composed of multiple rods that are rotatably connected in an X-shape. The upper end of the rotating shaft (73) is rotatably inserted into the rotatable connection of the rods.

4. A cutting device for door and window production according to claim 2, characterized in that: Two feeding mechanisms (6) installed on the fixed seat (2) and the sliding seat (3) are symmetrically arranged, and storage slots matching the feeding mechanisms (6) are opened on both sides of the linkage table (5).

5. A cutting device for door and window production according to claim 4, characterized in that: The feeding mechanism (6) includes a convex plate (61), a feeding bar (62) and a rotating rod (63). The convex plates (61) of the two feeding mechanisms (6) are respectively fixedly installed on the end faces of the fixed seat (2) and the sliding seat (3). A rotating shaft is fixedly connected to one end of the side of the two rotating rods (63). The rotating rods (63) are rotatably installed on the end face of the convex plate (61) through the rotating shaft. The feeding bar (62) is rotatably connected to the other end of the rotating rod (63).

6. A cutting device for door and window production according to claim 5, characterized in that: The rotating rod (63) is equipped with a first motor, and one of the rotating rods (63) is fixedly connected to the output shaft of the first motor. The first motor is used to drive the rotating rod (63) to rotate.

7. A cutting device for door and window production according to claim 6, characterized in that: An eccentric wheel (631) is sleeved on the outer wall of the rotating shaft of the rotating rod (63). The rotating shaft is the rotation center of the eccentric wheel (631). A collar (632) is rotatably sleeved on the outer wall of the eccentric wheel (631). A connecting rod (633) is fixedly connected between the two collars (632).

8. A cutting device for door and window production according to claim 5, characterized in that: The end faces of the fixed seat (2) and the sliding seat (3) are each equipped with a fixing mechanism (8), which is used to fix the door and window profiles located in the working area of ​​the fixed seat (2) and the sliding seat (3).

9. A cutting device for door and window production according to claim 8, characterized in that: The fixing mechanism (8) includes a fixing rod (81), a sliding frame (82) and a sliding plate (83). The sliding frames (82) of the two fixing mechanisms (8) are respectively fixedly connected to the end faces of the fixing seat (2) and the sliding seat (3). The sliding plate (83) is slidably inserted into the upper end of the sliding frame (82). The fixing rod (81) is fixedly connected to the upper end of the sliding plate (83), and the output rod of the fixing rod (81) faces the cutting box (4).

10. A cutting device for door and window production according to claim 9, characterized in that: A lead screw (831) is rotatably mounted inside the sliding frame (82). The lead screw (831) is threadedly connected to the sliding plate (83). The lead screw (831) is used to drive the sliding plate (83) to slide. A second motor for driving the lead screw (831) to rotate is fixedly mounted at the lower end of the sliding frame (82).

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