A plastic steel cutting and polishing machine for door and window production
By designing a plastic steel cut-out grinder that includes a frame, motor, and mounting rack, the problem of insufficient precision of handheld grinders was solved, achieving higher grinding accuracy and stability, avoiding waste splattering, and improving the performance of plastic steel cut-outs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FORTUNE DOORS & WINDOWS TECHNOLOGY (GUANGDONG) CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-14
AI Technical Summary
In the existing technology, when handheld grinders are used to grind the cut edges of plastic steel, the grinding accuracy and flatness cannot be guaranteed, which affects the accuracy and performance of the plastic steel after cutting.
A plastic steel cutting and grinding machine was designed, which includes a frame, a motor and a placement rack. The grinding disc is driven by the motor, and combined with the positioning rod, support screw and protective cover, the plastic steel is fixed and protected, improving the grinding accuracy and stability.
It improves the grinding precision and smoothness of the plastic steel cut, avoids the injury to operators caused by flying debris, and enhances the stability of grinding performance.
Smart Images

Figure CN224488597U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding machine technology, specifically a plastic steel cutting grinding machine for door and window manufacturing. Background Technology
[0002] Plastic steel is a type of PVC profile made from polyvinyl chloride (UPVC) resin as the main raw material, with the addition of a certain proportion of stabilizers, colorants, fillers, ultraviolet absorbers, etc., through extrusion into profiles, and then through cutting, welding or screwing.
[0003] During the production of doors and windows, the length of PVC windows varies due to their production dimensions, requiring cutting. Therefore, a grinder is needed to grind the cut edges. However, when using existing grinders to grind the PVC window cut edges, the grinder is handheld, which cannot guarantee the grinding accuracy and flatness, affecting the accuracy and performance of the PVC window after cutting. Utility Model Content
[0004] The purpose of this utility model is to provide a plastic steel cutting and grinding machine for door and window manufacturing, so as to solve the problem mentioned in the background art that the grinding accuracy and flatness cannot be guaranteed when using a hand-held grinding machine, which affects the accuracy and performance of the plastic steel after cutting.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic steel cutting and grinding machine for door and window manufacturing, comprising a frame, a motor, and a placement rack. The motor is bolted to the surface of the frame. A partition is fixedly connected to the surface of the placement rack. A support leg is fixedly connected to the lower surface of the placement rack. A protective cover is fixedly connected to the surface of the frame. A positioning rod is fixedly connected to the side of the frame and the placement rack that contacts each other. A connecting screw is threaded through the surface of the frame. A connecting block is fixedly connected to the surface of the placement rack. A support screw is fixedly connected to the surface of the connecting block. A positioning screw sleeve and a fastening screw sleeve are sleeved on the outer surface of the support screw. A pressure plate is sleeved on the outer surface of the support screw. A grinding disc is sleeved on the output shaft of the motor.
[0006] Preferably, the frame has a through hole on its surface, the placement rack has a screw hole on its side surface, and the frame and the placement rack are connected by a connecting screw and a screw hole.
[0007] Preferably, the side of the frame that contacts the placement rack has a first groove, and the side of the placement rack that contacts the frame has a second groove. The grinding disc is pressed between the first groove and the second groove by a motor.
[0008] Preferably, the positioning rods are distributed at both ends of the frame, and the surface of the placement frame has a circular hole, through which the positioning rods are inserted into the placement frame.
[0009] Preferably, the protective cover acts above the grinding disc via the frame, and the pressure plate is in the shape of a long plate and acts above the placement rack.
[0010] Preferably, the connecting block is disc-shaped, and the connecting block and the supporting screw are connected in two sets on both sides of the placement frame.
[0011] Preferably, the positioning screw sleeve and the fastening screw sleeve are in contact with the upper and lower surfaces of the pressure plate through the support screw, the surface of the motor output shaft is provided with threads, and the grinding disc is connected to the motor output shaft through the threads and the screw sleeve.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. By connecting the frame and the motor, and then connecting the motor and the grinding disc, the rotation control of the grinding disc is achieved. The connection between the frame and the mounting rack is achieved through the connection between the frame and the mounting rack. The mounting rack facilitates the placement of the plastic steel. The protective cover can block the waste generated during the grinding of the plastic steel, preventing injury to the operator. Compared with the handheld grinder, the grinding of the plastic steel using this device improves the grinding accuracy and smoothness of the plastic steel.
[0014] 2. By connecting the placement frame and the connecting block, and then connecting the connecting block and the supporting screw, the position of the pressure plate on the placement frame is limited. By connecting the positioning screw sleeve and the supporting screw, and then tightening the connection between the screw sleeve and the supporting screw, the position of the pressure plate on the supporting screw is controlled. Through the abutting contact between the pressure plate and the plastic steel on the placement frame, large-scale jumping of the plastic steel is avoided due to the centrifugal force generated by the rotation of the grinding disc during grinding, further improving the accuracy and stability of grinding the plastic steel cut. Attached Figure Description
[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;
[0016] Figure 2 This is a three-dimensional rear view of the structure of this utility model;
[0017] Figure 3 This is a three-dimensional cross-sectional view of the structure of this utility model;
[0018] Figure 4 This is a three-dimensional exploded cross-sectional view of the structure of this utility model;
[0019] Figure 5 This is a three-dimensional structural diagram of the frame of this utility model.
[0020] In the diagram: 1. Frame; 11. Protective cover; 12. Positioning rod; 2. Motor; 21. Grinding disc; 3. Placement rack; 31. Partition; 4. Support leg; 5. Pressure plate; 51. Connecting block; 52. Support screw; 53. Positioning screw sleeve; 54. Fastening screw sleeve; 6. Connecting screw. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-5 One embodiment provided by this utility model:
[0023] A plastic steel cutting and grinding machine for door and window manufacturing includes a frame 1, a motor 2, and a placement rack 3. The motor 2 is bolted to the surface of the frame 1. A partition 31 is fixedly connected to the surface of the placement rack 3. A support leg 4 is fixedly connected to the lower surface of the placement rack 3. A protective cover 11 is fixedly connected to the surface of the frame 1. A positioning rod 12 is fixedly connected to the side of the frame 1 and the placement rack 3 that is in contact. A connecting screw 6 is passed through the surface of the frame 1. A connecting block 51 is fixedly connected to the surface of the placement rack 3. A support screw 52 is fixedly connected to the surface of the connecting block 51. A positioning screw sleeve 53 and a fastening screw sleeve 54 are sleeved on the outer surface of the support screw 52. A pressure plate 5 is sleeved on the outer surface of the support screw 52. A grinding disc 21 is sleeved on the output shaft of the motor 2. Through the connection between the frame 1 and the placement rack 3, the placement rack 3 facilitates the grinding and placement of the plastic steel. The partition 31 limits the placement position of the plastic steel on the placement rack 3, preventing it from falling off during grinding.
[0024] Furthermore, a through hole is provided on the surface of the frame 1, and a screw hole is provided on the side surface of the placement rack 3. The frame 1 and the placement rack 3 are connected by a connecting screw 6 and a screw hole. Through the through hole on the frame 1 and the screw hole on the placement rack 3, the connecting screw 6 facilitates the connection and support operation between the frame 1 and the placement rack 3, thereby achieving the effect of limiting the support position of the motor 2 and the grinding disc 21.
[0025] Furthermore, a groove 1 is provided on the side of the frame 1 that contacts the placement rack 3, and a groove 2 is provided on the side of the placement rack 3 that contacts the frame 1. The grinding disc 21 is positioned between the groove 1 and the groove 2 by the action of the motor 2. The placement of the grinding disc 21 is facilitated by the action of the groove 1 on the frame 1 and the groove 2 on the placement rack 3. The frame 1 and the placement rack 3 can be detached and connected, which facilitates the disassembly and assembly of the grinding disc 21.
[0026] Furthermore, positioning rods 12 are distributed at both ends of the frame 1, and round holes are provided on the surface of the placement frame 3. The positioning rods 12 are inserted into the placement frame 3 through the round holes. Through the connection between the positioning rods 12 and the frame 1, the positioning effect of the frame 1 on the placement frame 3 is achieved by inserting the positioning rods 12 into the round holes.
[0027] Furthermore, the protective cover 11 acts above the grinding disc 21 through the frame 1, and the pressure plate 5 acts above the placement rack 3 in the form of a long plate. Through the connection between the protective cover 11 and the frame 1, the protective cover 11 can block the waste chips from the grinding disc 21, preventing the waste chips from splashing and causing injury to the operator.
[0028] Furthermore, the connecting block 51 is disc-shaped, and the connecting block 51 and the supporting screw 52 are connected in two sets on both sides of the placement frame 3. Through the connection between the placement frame 3 and the connecting block 51, the connection between the connecting block 51 and the supporting screw 52 achieves the effect of limiting the position of the pressure plate 5 on the placement frame 3.
[0029] Furthermore, the positioning screw sleeve 53 and the fastening screw sleeve 54 abut against the upper and lower surfaces of the pressure plate 5 through the support screw 52. The output shaft of the motor 2 is provided with threads, and the grinding disc 21 is connected to the output shaft of the motor 2 through threads and screw sleeves. With the connection of the positioning screw sleeve 53 and the support screw 52, and the connection of the fastening screw sleeve 54 and the support screw 52, the clamping support of the pressure plate 5 on the support screw 52 by the fastening screw sleeve 54 and the positioning screw sleeve 53 improves the stability of the pressure plate 5 in use position. Under the action of the pressure plate 5, the plastic steel on the placement rack 3 can be limited and supported. When grinding it, the pressure plate 5 and the plastic steel do not need to abut against each other directly. There is a certain gap, which does not affect the sliding of the plastic steel on the placement rack 3.
[0030] Working principle: When grinding the cut of the plastic steel, the plastic steel is placed on the placement rack 3, and then the motor 2 is started to rotate the grinding disc 21. At this time, the position of the pressure plate 5 is adjusted to a suitable position by the positioning screw sleeve 53 and the fastening screw sleeve 54. The cut of the plastic steel comes into contact with the surface of the grinding disc 21 to complete the grinding operation. Under the action of the protective cover 11, the grinding waste can be blocked. When the grinding disc 21 is replaced, the connecting screw 6 is rotated with a tool to separate the frame 1 and the placement rack 3, so as to facilitate the replacement of the grinding disc 21. After the replacement is completed, the operation is reversed to complete the connection between the frame 1 and the placement rack 3.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A plastic steel cutting and grinding machine for door and window manufacturing, comprising a frame (1), a motor (2), and a mounting rack (3), characterized in that: The motor (2) is bolted to the surface of the frame (1). A partition (31) is fixedly connected to the surface of the placement rack (3). A support leg (4) is fixedly connected to the lower surface of the placement rack (3). A protective cover (11) is fixedly connected to the surface of the frame (1). A positioning rod (12) is fixedly connected to the side of the frame (1) and the placement rack (3) that are in contact. A connecting screw (6) is connected through the surface of the frame (1). A connecting block (51) is fixedly connected to the surface of the placement rack (3). A support screw (52) is fixedly connected to the surface of the connecting block (51). A positioning screw sleeve (53) and a fastening screw sleeve (54) are sleeved on the outer surface of the support screw (52). A pressure plate (5) is sleeved on the outer surface of the support screw (52). A grinding disc (21) is sleeved on the output shaft of the motor (2).
2. The plastic steel cutting and grinding machine for door and window manufacturing according to claim 1, characterized in that: The frame (1) has a through hole on its surface, and the side surface of the placement rack (3) has a screw hole. The frame (1) and the placement rack (3) are connected by a connecting screw (6) and a screw hole.
3. The plastic steel cutting and grinding machine for door and window manufacturing according to claim 1, characterized in that: The side of the frame (1) that contacts the placement rack (3) has a groove one, and the side of the placement rack (3) that contacts the frame (1) has a groove two. The grinding disc (21) is operated between the groove one and the groove two by the motor (2).
4. The plastic steel cutting and grinding machine for door and window manufacturing according to claim 1, characterized in that: The positioning rods (12) are distributed at both ends of the frame (1), and the surface of the placement frame (3) is provided with round holes. The positioning rods (12) are inserted into the placement frame (3) through the round holes.
5. A plastic steel cutting and grinding machine for door and window manufacturing according to claim 1, characterized in that: The protective cover (11) acts above the grinding disc (21) via the frame (1), and the pressure plate (5) is in the shape of a long plate and acts above the placement rack (3).
6. A plastic steel cutting and grinding machine for door and window manufacturing according to claim 1, characterized in that: The connecting block (51) is disc-shaped, and the connecting block (51) and the supporting screw (52) are connected in two sets on both sides of the placement frame (3).
7. A plastic steel cutting and grinding machine for door and window manufacturing according to claim 1, characterized in that: The positioning screw sleeve (53) and the fastening screw sleeve (54) are in contact with the upper and lower surfaces of the pressure plate (5) through the support screw (52). The surface of the output shaft of the motor (2) is provided with threads. The grinding disc (21) is connected to the output shaft of the motor (2) through the threads and the screw sleeve.