Glass reinforced polyurethane door and window profile cutting device

Abstract

The utility model relates to door and window section bar cutting technical field, and disclose a kind of glass reinforced polyurethane door and window section bar cutting device, including placement chassis, the upper end surface of placement chassis is fixedly connected with horizontal plate by block body, the upper end surface of horizontal plate is equipped with knife groove, the upper end surface of horizontal plate and the side of knife groove are sequentially connected with two fixed support placement seat, and two The fixed support placement seat is equipped with tight pressure structure on;The utility model is provided with tight pressure structure, when section bar is fixed, using the excellent elastic deformation ability and high wear resistance of polyurethane elastomer block, matching embedded groove can be formed self-adapted recess according to section bar cross section shape, compared with the rigid point contact of traditional pressing plate, the contact area with section bar is greatly increased, impact force generated by cutting vibration can be evenly dispersed, effectively avoid the small displacement of section bar caused by local stress concentration, reduce precision deviation risk from the root.

Description

Technical Field

[0001] This utility model relates to the field of door and window profile cutting technology, and in particular to a glass-reinforced polyurethane door and window profile cutting device. Background Technology

[0002] As the building door and window industry continues to raise the requirements for profile performance, glass-reinforced polyurethane door and window profiles, with their excellent properties such as lightweight, high strength, heat insulation, and corrosion resistance, are gradually replacing traditional aluminum alloy profiles in the application of high-end buildings. As one of the core processes in door and window processing, profile cutting accuracy and stability directly determine the assembly accuracy, sealing performance and overall service life of doors and windows.

[0003] Application No. 202322523487.9 discloses an aluminum alloy door and window profile cutting device. This device constructs a cutting platform through a bracket and support base, and uses a hand-tightened screw to drive a pressure plate to clamp and fix the profile. Then, it works in conjunction with a cutting device to complete the cutting operation. However, when fixing the profile, the rigid clamping method of turning the second hand-tightened screw to push the pressure plate into contact with the profile relies entirely on the preload of the threaded pair for its fixing reliability. In the actual cutting process, the continuous vibration generated by the high-speed operation of the cutting device will be transmitted through the bracket, support base and other components. The force is gradually transferred to the threaded connection between the second hand-tightening screw and the pressure plate. Under long-term vibration, the preload between the threads will gradually be lost, causing the threads to loosen. Since the pressure plate only uses the thread preload to press the profile, the pressing force of the pressure plate on the profile will decrease significantly after the threads loosen. This will not only fail to effectively offset the impact of cutting vibration on the profile, but will also cause the profile to undergo slight displacement or shaking during the cutting process. This displacement and shaking will directly cause precision problems such as cut tilt and length dimension deviation, which will seriously affect the subsequent assembly quality of doors and windows. Utility Model Content

[0004] This utility model proposes a glass-reinforced polyurethane door and window profile cutting device to solve the problem that existing cutting devices rely on the rigid clamping method of thread preload, which is prone to thread loosening and pressure plate clamping force reduction under cutting vibration, resulting in displacement and shaking during profile cutting and causing accuracy problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a glass-reinforced polyurethane door and window profile cutting device, comprising a base frame, a horizontal plate fixedly connected to the upper end face of the base frame via a block, a cutting groove formed on the upper end face of the horizontal plate, and two fixed support seats sequentially connected to the upper end face of the horizontal plate and one side of the cutting groove, each of the two fixed support seats being provided with a pressing structure for adaptively pressing and fixing the door and window profiles passing through the fixed support seats, the pressing structure being provided with a locking assembly for locking the pressing position of the pressing structure, a connecting seat fixedly connected to one side of the outer wall of the base frame, a connecting rod hinged to the recess of the connecting seat, and a cutting component for cutting the fixed door and window profile connected to the end of the connecting rod away from the connecting seat.

[0006] Preferably, the compression structure includes a sleeve fixedly connected to the upper end of the inner wall of the fixed support placement seat, a vertical rod inserted inside the sleeve, a connecting plate connected to the lower end face of the vertical rod, and a polyurethane elastomer block fixedly connected to the lower end face of the connecting plate.

[0007] Preferably, the upper end face of the vertical rod passes through the sleeve and the fixed support placement seat in sequence and extends to the upper end of the fixed support placement seat. A first spring is connected inside the sleeve. The free end of the first spring is connected to the connecting plate, and the first spring is sleeved on the outside of the vertical rod.

[0008] Preferably, the locking assembly includes a movable groove formed on the outer wall of the vertical rod, a horizontal bar plate is embedded inside the movable groove, a threaded rod is threaded to the upper end of the vertical rod, and the lower end face of the threaded rod passes through the vertical rod and extends into the interior of the movable groove to be rotatably connected to the horizontal bar plate.

[0009] Preferably, the two ends of the horizontal bar are symmetrically connected with side blocks, the side walls of the side blocks are fixedly connected with insert blocks, and the outer wall of the fixed support base is provided with slots that cooperate with the insert blocks.

[0010] Preferably, the locking assembly further includes a rod groove formed at the end of the crossbar, the inner surface of the rod groove is connected to a second spring, the free end of the second spring is connected to a T-shaped rod, the end of the T-shaped rod away from the second spring passes through and extends to the outside of the crossbar and is fixedly connected to a connecting block, the connecting block being hinged to the side block.

[0011] Preferably, a cutting placement block is fixedly connected to the upper end face of the horizontal plate and directly above the knife groove, and a handle is fixedly connected to the outer wall of the connecting rod and to one side of the cutting piece.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: (1) This application has a clamping structure. When fixing the profile, the excellent elastic deformation capability and high wear resistance of the polyurethane elastomer block can be used to adaptively recess and form a matching fitting groove according to the profile cross-sectional shape. Compared with the rigid point contact of the traditional pressure plate, the contact area with the profile is greatly increased. The impact force generated by the cutting vibration can be evenly distributed, effectively avoiding the small displacement of the profile caused by local stress concentration, and reducing the risk of accuracy deviation from the root. Secondly, the elastic properties of polyurethane material can compensate for the small gap between the components in real time during the vibration process, and continuously provide a stable clamping force for the profile, which completely solves the problem of thread loosening and preload loss caused by vibration in traditional thread fixing. At the same time, this structure does not require customized special pressure plates for profiles with different cross-sectional shapes. It can adapt to the processing needs of different materials and irregular profiles such as glass-reinforced polyurethane and aluminum alloys by the adaptive deformation of the elastomer block, which significantly improves the equipment adaptability and reduces the purchase and replacement frequency of special pressure plates. (2) This application is equipped with a locking component. After the clamping structure has completed the initial fixation of the profile, the dual fixing function of threaded drive limit and elastic locking can be used to rigidly lock the position of the polyurethane elastomer block in the clamping structure, effectively preventing the elastomer block from shifting under cutting vibration, and further enhancing the long-term reliability of the clamping structure in fixing the profile. This dual fixing design complements the clamping structure, solving the defect that the traditional device is prone to loosening under vibration due to the thread preload alone. At the same time, it can be operated without additional tools, ensuring the stability of the clamping structure while taking into account convenience. It can not only meet the cutting requirements of aluminum alloy profiles by cooperating with the clamping structure, but also adapt to the high requirements of fixing accuracy and reliability of new profiles such as glass-reinforced polyurethane, reducing the accuracy deviation caused by fixing problems and greatly improving the overall cutting quality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the fixed support placement base and the clamping structure of this utility model; Figure 3 This is an enlarged schematic diagram of the connection between the vertical rod and the connecting plate of this utility model; Figure 4 This is a schematic diagram showing the connection between the vertical rod and the locking assembly of this utility model; Figure 5 This is an enlarged schematic diagram of the connection between the side block and the crossbar of this utility model; In the diagram: 1. Base frame; 2. Horizontal plate; 3. Cutting block; 4. Knife groove; 5. Fixed support base; 6. Pressing structure; 61. Sleeve; 62. Vertical rod; 63. First spring; 64. Connecting plate; 65. Polyurethane elastomer block; 7. Locking assembly; 71. Movable groove; 72. Horizontal bar; 73. Threaded rod; 74. Side block; 75. Insert block; 76. Slot; 711. Rod groove; 712. Second spring; 713. T-shaped rod; 714. Connecting block; 8. Connecting base; 9. Connecting rod; 10. Cutting piece; 11. Handle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 As shown, a glass-reinforced polyurethane door and window profile cutting device includes a base frame 1. A horizontal plate 2 is fixedly connected to the upper end of the base frame 1 via a block. A knife groove 4 is provided on the upper end of the horizontal plate 2. Two fixed support seats 5 are sequentially connected to the upper end of the horizontal plate 2 and one side of the knife groove 4. A connecting seat 8 is fixedly connected to one side of the outer wall of the base frame 1. A connecting rod 9 is hinged to the recess of the connecting seat 8. A cutting component 10 for cutting the fixed door and window profile is connected to the end of the connecting rod 9 away from the connecting seat 8. A cutting block 3 is fixedly connected to the upper end of the horizontal plate 2 and directly above the knife groove 4. A handle 11 is fixedly connected to the outer wall of the connecting rod 9 and one side of the cutting component 10. (The cutting component 10 consists of a drive motor, a housing, and a blade. The housing is connected to the end of the connecting rod 9 away from the connecting seat 8. The blade is rotatably connected inside the housing. The drive motor is installed on the outer wall of the housing, and the output end of the drive motor passes through the housing and is connected to one end of the blade.)

[0017] Specifically, first, the door and window profiles are threaded sequentially through the two fixed support seats 5 from one side, while the marked cutting end on the profile is placed on the cutting block 3, ensuring that the cutting position is aligned with the subsequent blade's path. Then, the fixing structure on the fixed support seat 5 is operated to fix the profile, thereby preventing axial movement or radial displacement of the profile during the cutting process and ensuring the stability of the cutting. After fixing, the drive motor on the cutting component 10 is started. After the motor is powered on, it drives the blade inside the outer casing to rotate. At the same time, the operator holds the end of the handle 11 and slowly presses it down. The hinge structure between the connecting rod 9 and the connecting seat 8 is used to make the cutting component 10 rotate around the axis, so that the rotating blade gradually descends and approaches the cutting end of the door and window profile. After the blade contacts the profile, continuous and even downward pressure is used to ensure that the blade smoothly cuts into the profile until the profile is completely cut off, thus completing the precise cutting operation of the door and window profile.

[0018] Among them, see Figures 1-3 As shown, both fixed support placement seats 5 are equipped with clamping structures 6, which are used to adaptively clamp and fix the door and window profiles that pass through the fixed support placement seats 5.

[0019] The compression structure 6 includes a sleeve 61 fixedly connected to the upper end of the inner wall of the fixed support placement seat 5. A vertical rod 62 is inserted inside the sleeve 61. A connecting plate 64 is connected to the lower end face of the vertical rod 62. A polyurethane elastomer block 65 is fixedly connected to the lower end face of the connecting plate 64.

[0020] The upper end face of the vertical rod 62 passes through the sleeve 61 and the fixed support placement seat 5 in sequence and extends to the upper end of the fixed support placement seat 5. The sleeve 61 is connected to the inside of the first spring 63. The free end of the first spring 63 is connected to the connecting plate 64, and the first spring 63 is sleeved on the outside of the vertical rod 62.

[0021] Through the above technical solution: After the profile is placed on the fixed support seat 5, the vertical rod 62 is pressed down. After the vertical rod 62 is subjected to force and with the help of the elastic force of the first spring 63, the connecting plate 64 moves down synchronously, so that the polyurethane elastomer block 65 at the bottom of the connecting plate 64 contacts the outer wall of the profile. The polyurethane elastomer block 65, with its excellent elastic deformation ability and high wear resistance, adaptively recesses according to the cross-sectional shape of the profile (such as rectangular, irregular, etc.) under pressure, quickly forming a fitting groove that perfectly matches the profile contour. The profile is locked and fixed in all directions through the fitting structure. Compared with the rigid point contact of the traditional pressure plate, this method greatly increases the contact area, which can evenly distribute the cutting vibration impact force and avoid profile displacement and accuracy deviation. Moreover, the polyurethane elasticity can compensate for vibration gaps and maintain stable clamping force, completely solving the problem of loosening of traditional threaded fixing. It can adapt to various profiles such as glass-reinforced polyurethane and aluminum alloy without the need for customized special pressure plates, reducing the frequency of pressure plate purchase and replacement.

[0022] See Figure 2 , Figure 4 and Figure 5 As shown, the clamping structure 6 is provided with a locking assembly 7, which is used to lock the clamping position of the clamping structure 6.

[0023] The locking assembly 7 includes a movable groove 71 formed on the outer wall of the vertical rod 62, a horizontal bar 72 is embedded inside the movable groove 71, a threaded rod 73 is threadedly connected to the upper end of the vertical rod 62, and the lower end face of the threaded rod 73 passes through the vertical rod 62 and extends into the interior of the movable groove 71 to be rotatably connected to the horizontal bar 72.

[0024] The two ends of the horizontal bar 72 are symmetrically connected with side blocks 74, and the side walls of the side blocks 74 are fixedly connected with insert blocks 75. The outer wall of the fixed support placement seat 5 is provided with a slot 76 that is used in conjunction with the insert blocks 75.

[0025] The locking assembly 7 also includes a rod groove 711 formed at the end of the horizontal bar 72. A second spring 712 is connected to the inner surface of the rod groove 711. A T-shaped rod 713 is connected to the free end of the second spring 712. A connecting block 714 is fixedly connected to the end of the T-shaped rod 713 away from the second spring 712, extending through and to the outside of the horizontal bar 72. The connecting block 714 is hinged to the side block 74.

[0026] Through the above technical solution: After the profiles of the compression structure 6 are fixed, hold the end of the threaded rod 73 and twist it to make the horizontal bar 72 move down in the movable groove 71. After the horizontal bar 72 moves down and contacts the upper end surface of the fixed support placement seat 5, pull the side block 74 horizontally outward. At this time, the side block 74 drives the T-shaped rod 713 to slide along the rod groove 711. At the same time, using the elastic force of the second spring 712, after the side block 74 moves away from the horizontal bar 72 by a certain distance, bend the side block 74 around the hinge pad of the connecting block 714 by 90 degrees, so that it changes from the initial horizontal state to the vertical state. Finally, slowly release the side block 74, and through the elastic force of the second spring 712 and the T-shaped rod 713, the side block 74 moves horizontally outward. Block 74 is reset, causing the insert 75 on the side block 74 to snap into the slot 76 opened in the fixed support placement seat 5, thus locking the position of the clamping structure 6. This dual fixing structure of threaded drive limit and elastic snap-lock can rigidly lock the position of the polyurethane elastomer block 65, preventing it from shifting under cutting vibration, and further enhancing the long-term reliability of the clamping structure 6 in fixing the profile. It not only solves the defect of traditional devices that rely solely on thread preload and are prone to loosening, but also requires no additional tools, taking into account both stability and convenience. It can work with the clamping structure 6 to meet the cutting accuracy and reliability requirements of aluminum alloy and glass-reinforced polyurethane profiles, and reduce accuracy deviation.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A glass-reinforced polyurethane door and window profile cutting device, comprising a base frame (1), characterized in that: The upper end of the placement base (1) is fixedly connected to a horizontal plate (2) by a block. The upper end of the horizontal plate (2) is provided with a knife groove (4). The upper end of the horizontal plate (2) and one side of the knife groove (4) are connected to two fixed support placement seats (5) in sequence. Both fixed support placement seats (5) are provided with a pressing structure (6) for adaptive pressing and fixing of the door and window profiles passing through the fixed support placement seats (5). The pressing structure (6) is provided with a locking assembly (7) for locking the pressing position of the pressing structure (6). A connecting seat (8) is fixedly connected to one side of the outer wall of the placement base (1). A connecting rod (9) is hinged to the recess of the connecting seat (8). The end of the connecting rod (9) away from the connecting seat (8) is connected to a cutting part (10) for cutting the fixed door and window profiles.

2. The glass-reinforced polyurethane door and window profile cutting device according to claim 1, characterized in that: The compression structure (6) includes a sleeve (61) fixedly connected to the upper end of the inner wall of the fixed support placement seat (5). A vertical rod (62) is inserted inside the sleeve (61). A connecting plate (64) is connected to the lower end face of the vertical rod (62). A polyurethane elastomer block (65) is fixedly connected to the lower end face of the connecting plate (64).

3. The glass-reinforced polyurethane door and window profile cutting device according to claim 2, characterized in that: The upper end face of the vertical rod (62) passes through the sleeve (61) and the fixed support placement seat (5) in sequence and extends to the upper end of the fixed support placement seat (5). The sleeve (61) is connected to the inside of a first spring (63). The free end of the first spring (63) is connected to the connecting plate (64), and the first spring (63) is sleeved on the outside of the vertical rod (62).

4. The glass-reinforced polyurethane door and window profile cutting device according to claim 3, characterized in that: The locking assembly (7) includes a movable groove (71) formed on the outer wall of the vertical rod (62), a horizontal bar plate (72) is embedded inside the movable groove (71), a threaded rod (73) is threaded to the upper end of the vertical rod (62), and the lower end face of the threaded rod (73) passes through the vertical rod (62) and extends into the movable groove (71) and is rotatably connected to the horizontal bar plate (72).

5. The glass-reinforced polyurethane door and window profile cutting device according to claim 4, characterized in that: The two ends of the horizontal bar (72) are symmetrically connected with side blocks (74), and the side wall of the side block (74) is fixedly connected with a plug (75). The outer wall of the fixed support placement seat (5) is provided with a slot (76) that cooperates with the plug (75).

6. The glass-reinforced polyurethane door and window profile cutting device according to claim 5, characterized in that: The locking assembly (7) further includes a rod groove (711) opened at the end of the crossbar (72). A second spring (712) is connected to the inner surface wall of the rod groove (711). A T-shaped rod (713) is connected to the free end of the second spring (712). A connecting block (714) is fixedly connected to the end of the T-shaped rod (713) away from the second spring (712) through and extending to the outside of the crossbar (72). The connecting block (714) is hinged to the side block (74).

7. The glass-reinforced polyurethane door and window profile cutting device according to claim 1, characterized in that: A cutting placement block (3) is fixedly connected to the upper end face of the horizontal plate (2) and directly above the knife groove (4), and a handle (11) is fixedly connected to the outer wall of the connecting rod (9) and on one side of the cutting piece (10).

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