An angle-cutting clamp for door and window sealing strips
By designing a corner-cutting clamp for door and window sealing strips, a channel is formed by a fixed seat and a movable seat, and a V-shaped infeed groove is set on the fixed seat. This solves the problem of asymmetrical corner cuts of the sealing strips, achieves a smooth fit between the sealing strips and the corners of doors and windows, improves sealing performance, and reduces waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN LUYISI DOORS & WINDOWS CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-30
AI Technical Summary
In existing technologies, it is difficult to ensure the accuracy of the 45-degree cutting angle when cutting door and window sealing strips at corners, resulting in deviation or asymmetry of the cutting angle, which affects the sealing performance and causes waste of sealing strips.
Design a door and window sealing strip corner cutting clamp, including a fixed seat and a movable seat, forming a channel for placing the sealing strip. The fixed seat is provided with a V-shaped infeed groove to ensure that the cutter cuts along the V-shaped direction, preventing deviation and asymmetry.
The design of the clamps ensures that the sealing strip fits smoothly and evenly against the corners of doors and windows, improving sealing performance and reducing strip waste.
Smart Images

Figure CN224425744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of adhesive strip processing fixtures, and in particular to a corner cutting fixture for door and window adhesive strips. Background Technology
[0002] In the manufacturing process of doors and windows, sealing strips are the main structure for ensuring the airtightness, watertightness, and sound insulation performance of doors and windows. Currently, when the sealing strips are attached to the door and window frames, they usually need to be cut at the corners to ensure that the rubber sealing strip fits well with the corner and that the strip can be flat and avoid wrinkles or lifting, thereby ensuring the sealing effect. However, the existing method of cutting the sealing strips involves workers manually cutting V-shaped cuts on the strips with blades or scissors. The cuts need to be made at a 45-degree angle on both sides to form a 90-degree V-shaped cut. Due to the lack of positioning and guiding devices, it is difficult for workers to ensure that they can accurately cut at a 45-degree angle, which can easily lead to deviation of the cut angle or asymmetry of the cuts on both sides. This results in uneven adhesion of the sealing strip at the corner, affecting the sealing performance and even wasting the sealing strip. Utility Model Content
[0003] The present invention provides a corner-cutting clamp for door and window sealing strips to solve the above-mentioned problems and ensure that the cutting angle and the cutting blades on both sides are symmetrical.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a corner-cutting clamp for door and window sealing strips, comprising a clamp, the clamp comprising a fixed seat and a movable seat, the movable seat being rotatably connected to the fixed seat, a channel for placing the sealing strip being formed between the movable seat and the fixed seat, the channel passing through the left and right sides of the clamp, the fixed seat having a V-shaped cutting groove on its front side, and the cutting groove communicating with the interior of the channel.
[0005] Furthermore, the fixed seat includes a vertical plate and a base plate. The vertical plate is vertically disposed at the front of the base plate, and the base plate has an arc-shaped groove at the rear. The bottom of the movable seat is provided with a rotating shaft, which is rotatably connected to the arc-shaped groove.
[0006] Furthermore, the arc-shaped groove extends through the left and right sides of the base plate.
[0007] Furthermore, the feed groove has two symmetrically arranged channels, which are perpendicular to each other and connected at one end.
[0008] Furthermore, the movable seat has a groove in the middle corresponding to the tool feed groove.
[0009] Furthermore, the movable seat and the fixed seat are respectively provided with recesses on their inner sides. When the movable seat and the fixed seat are closed, the recesses combine to form a channel.
[0010] Compared with the prior art, the beneficial effects of this utility model are: by setting the clamp, the rubber strip is placed in the channel, and the cutting tool is inserted into the cutting groove set on the front of the fixed seat. The cutting tool cuts the rubber strip in the channel along the V-shaped direction of the cutting groove, preventing the cutting tool from deviating or the cutting tools on both sides from being asymmetrical, ensuring that the rubber strip fits flat against the corner of the door and window, thereby improving the sealing performance and reducing the waste of rubber strip. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the unfolded state of this utility model.
[0013] Figure 3 This is a perspective view of the present invention.
[0014] Figure 4 This is the front view of the present invention.
[0015] In the diagram: 1. Fixture; 10. Fixed seat; 20. Movable seat; 100. Channel; 200. Groove; 201. Rotating shaft; 202. Arc groove. Detailed Implementation
[0016] 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.
[0017] As shown in the attached figure, this utility model discloses a corner-cutting clamp for door and window sealing strips, comprising a clamp 1, which includes a fixed base 10 and a movable base 20. The movable base 20 is rotatably connected to the fixed base 10, allowing the movable base 20 to swing. The fixed base 10 can be directly fixed to the worktable for installing door and window sealing strips. A channel 100 for placing the sealing strip is formed between the movable base 20 and the fixed base 10. The channel 100 extends through the left and right sides of the clamp 1. The fixed base 10 has a V-shaped infeed groove 101 on its front side, and the infeed groove 101 connects to the inside of the channel 100. The sealing strip can be inserted through one end of the channel 100, or the movable base 20 can be opened to directly insert the sealing strip. After the sealing strip completes one corner cutting, the next corner cutting point can be aligned with the infeed groove 101 by pulling the sealing strip.
[0018] This utility model discloses the principle and effect of a corner-cutting clamp for door and window sealing strips. Using the clamp 1, the sealing strip is placed in the channel 100. First, the movable seat 20 is opened to expose the channel 100. Then, the sealing strip is placed directly into the channel 100, and the movable seat 20 is closed. The movable seat 20 and the fixed seat 10 hold the sealing strip to prevent movement. A cutting tool is inserted into the infeed groove 101 on the front of the fixed seat 10, and the sealing strip in the channel 100 is corner-cut along the V-shaped direction of the infeed groove 101. This prevents the cutting tool from deviating or the cutting tools on both sides from being asymmetrical, ensuring that the sealing strip fits smoothly against the corner of the door or window, thereby improving sealing performance and reducing sealing strip waste. Since current sealing strips are continuous long strips, after cutting one slit, the sealing strip can be pulled to one end to make the next corner-cutting point correspond to the infeed groove 101 and cut again. Specifically, the sealing strip is corner-cut at regular intervals according to the door and window dimensions.
[0019] The fixed base 10 and the movable base 20 are both integrally molded. Specifically, the fixed base 10 includes a vertical plate and a base plate. The vertical plate is vertically positioned at the front of the base plate, and the rear of the base plate has an arc-shaped groove 202. The bottom of the movable base 20 has a rotating shaft 201, which is rotatably connected to the arc-shaped groove 202. The opening of the arc-shaped groove 202 is smaller than the diameter of the rotating shaft 201 to prevent the rotating shaft 201 from disengaging from the arc-shaped groove 202. The arc-shaped groove 202 extends through the left and right sides of the base plate. The installation of the movable base 20 and the fixed base 10 is simple; the rotating shaft 201 is simply inserted from one end of the arc-shaped groove 202 and moved to the middle.
[0020] Specifically, the feed groove 101 has two symmetrically arranged channels, which are arranged perpendicularly and connected at one end. That is, the included angle of the feed groove 101 is 90 degrees, and the included angle between the two channels and the horizontal plane is 45 degrees, ensuring that the cutters on both sides feed symmetrically at 45 degrees.
[0021] Specifically, the movable seat 20 has a groove 200 in the middle corresponding to the tool feed groove 101. This groove 200 is equivalent to the tool avoidance space, mainly to avoid affecting the tool.
[0022] Specifically, the movable seat 20 and the fixed seat 10 are respectively provided with recesses on their inner sides. When the movable seat 20 and the fixed seat 10 are closed, the recesses combine to form a channel 100. The shape of the channel 100 corresponds to the cross-sectional shape of the adhesive strip, preventing the adhesive strip from being squeezed by the movable seat 20 or the fixed seat 10 when it enters the channel 100, thereby ensuring the accuracy of the chamfer.
[0023] The above embodiments are preferred embodiments of this utility model. All structures similar to this utility model and equivalent changes thereof should fall within the protection scope of this utility model.
Claims
1. A mitering jig for a door and window tape, characterized by: The fixture includes a fixed seat and a movable seat. The movable seat is rotatably connected to the fixed seat. A channel for placing an adhesive strip is formed between the movable seat and the fixed seat. The channel runs through the left and right sides of the fixture. The fixed seat has a V-shaped infeed groove on its front side, and the infeed groove communicates with the inside of the channel.
2. A mitering jig for a door and window tape according to claim 1, characterized in that: The fixed seat includes a vertical plate and a base plate. The vertical plate is vertically arranged at the front of the base plate. The base plate has an arc-shaped groove at the rear. The bottom of the movable seat has a rotating shaft, which is rotatably connected to the arc-shaped groove.
3. A mitering jig for a door and window tape according to claim 2, wherein: The arc-shaped groove runs through the left and right sides of the base plate.
4. A mitering jig for a door and window tape according to claim 1, characterized in that: The feed groove has two symmetrically arranged channels, which are perpendicular to each other and connected at one end.
5. A mitering jig for a door and window tape according to claim 1, characterized in that: The movable seat has a groove in the middle corresponding to the feed groove.
6. A mitering jig for a door and window tape according to claim 1, characterized in that: The movable seat and the fixed seat are respectively provided with recesses on their inner sides. When the movable seat and the fixed seat are closed, the recesses combine to form a channel.