Corner combining machine for manufacturing plastic steel window frame

Abstract

The invention relates to a corner combining machine used for manufacturing a plastic steel window frame, the corner combining machine comprises a rack, four clamping assemblies used for clamping window frame edges respectively, a welding assembly and a moving assembly, the moving assembly is used for driving the opposite clamping assemblies to get close to each other or get away from each other, and each clamping assembly comprises a clamping seat, a clamping air cylinder and a clamping plate; the clamping base is connected to the rack in a sliding mode, the clamping plates are connected to the clamping base in a sliding mode, the sliding directions of the adjacent clamping plates are located on the same plane and are perpendicular to each other, the clamping air cylinder is used for driving the clamping plates to move, and the clamping base and the clamping plates clamp the edges of a window frame. The welding assembly is used for melting the two ends of the window frame edge. The window frame corner combining device has the effect of improving the window frame corner combining production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of corner assembly machines, and in particular to a corner assembly machine for making plastic steel window frames. Background Art Plastic-steel window frames are made of polyvinyl chloride resin as the main raw material, with a certain proportion of stabilizers, colorants, fillers, UV absorbers, etc., and are made by extrusion, cutting, welding or screwing. Angle assembly machines are often used in production equipment to weld and assemble plastic-steel window frames.

[0002] A window frame is generally composed of four window frame edges with end faces at 45 degrees. Current corner assembly machines often weld adjacent window frame edges in batches, which requires multiple positioning and repeated removal of the window frame edges from the corner assembly machine, resulting in low work efficiency. Summary of the invention

[0003] In order to improve the production efficiency of window frame corner assembly, the present application provides a corner assembly machine for manufacturing plastic steel window frames.

[0004] The present application provides a corner assembly machine for manufacturing plastic steel window frames, which adopts the following technical solution: A corner assembly machine for making plastic steel window frames, comprising a frame, four clamping components respectively used to clamp the edges of the window frames, a welding component and a moving component, wherein the moving component is used to drive the relative clamping components to move closer to or away from each other, the clamping component comprises a clamping seat, a clamping cylinder and a clamping plate, the clamping seat is slidably connected to the frame, the clamping plate is slidably connected to the clamping seat, the sliding directions of adjacent clamping plates are in the same plane and are perpendicular to each other, the clamping cylinder is used to drive the clamping plate to move, the clamping seat and the clamping plate clamp the edge of the window frame, and the welding component is used to melt the two ends of the window frame edge.

[0005] By adopting the above technical solution, the staff places the four window frame edges to be assembled into a window frame on four clamping seats respectively, welds the two ends of the window frame edges through welding components, and then moves the four clamping seats close to each other through moving components. The ends of adjacent window frame edges in a molten state contact each other for combination, and the four window frame edges are processed at one time, which reduces the repeated positioning of the window frame edges and improves the working efficiency of the corner assembly machine.

[0006] Optionally, a sliding rod is provided on the clamping seat, and the length of the sliding rod is parallel to the sliding direction of the adjacent clamping seat. The welding assembly includes four welding seats and four welding parts. The four welding seats and the four clamping seats are staggered. The welding seats are respectively slidably connected to the sliding rods corresponding to the adjacent clamping seats. The welding parts include a welding plate and a welding cylinder. The welding plate is slidably connected to the welding seat. The two end surfaces of the welding plate are respectively used to melt one end of the adjacent window frame edge, and the welding cylinder is used to drive the welding plate to slide.

[0007] By adopting the above technical scheme, the welding seat is slidably connected to the sliding rods of two adjacent clamping seats. When the size of the window frame edge changes, the moving assembly changes the position of the clamping assembly, and the clamping assembly can change the position of the welding seat through the sliding rod, so that the position of the welding seat changes with the change of the clamping assembly, thereby improving the application range of the equipment. When the window frame needs to be welded, the window frame is first aligned by the moving assembly, and then the window frame is separated by the moving assembly. The welding plate is driven by the welding cylinder to move, and the welding plate is moved between the adjacent window frame edges. The welding plate contacts the window frame edge and forms a molten state. Then the welding cylinder drives the welding plate away from the window frame edge, and the moving assembly brings the window frame edges closer to each other again, and the window frame edges are combined by the molten material to form a window frame.

[0008] Optionally, the welding assembly also includes an alignment member, which includes an alignment plate and an alignment cylinder. The alignment plate is slidably connected to the welding plate, and the two ends of the alignment plate are respectively used to abut one end of an adjacent window frame edge. The alignment plate is provided with a receiving groove for the welding plate to slide, and the alignment cylinder is used to drive the alignment plate to move and expose the welding plate.

[0009] By adopting the above technical solution, adjacent window frame edges need to remain perpendicular to each other during welding. When the position of the window frame edge is adjusted, the end face of the window frame edge is abutted against the alignment plate so that the distances from the two window frame edges to the welding plate are the same. After the positioning is completed, the alignment plate is driven by the alignment cylinder to move so that the welding plate is exposed. The staff drives the four clamping assemblies to approach the welding plate at the same time through the moving parts. The window frame edges contact the welding plate for the same time, thereby improving the quality of the window frame edge welding.

[0010] Optionally, a cutting piece for cutting excess molten material on the window frame is provided on the welding seat, and the cutting piece includes a cutting frame, a cutting knife, a cutting screw and a cutting motor. The cutting frame is provided on the welding seat, and the length direction of the cutting screw is parallel to the inclination direction of the end face of the window frame. The cutting screw is rotatably connected to the cutting frame, and the cutting motor drives the cutting screw to rotate. The cutting knife is slidably connected to the cutting frame along the length direction of the cutting screw, and the cutting knife is threadedly connected to the cutting screw. The cutting knife is used to cut excess molten material after forming the window frame.

[0011] By adopting the above technical solution, the molten material in the welding process is squeezed by the two window frame edges and moves along the thickness direction of the window frame edges, causing rough material and flash to appear on the window frame. The rough material and flash are processed by cutting parts. The staff starts the cutting motor, and the cutting motor drives the cutting screw to rotate. The cutting screw mobilizes the cutting knife to move on the cutting frame. The cutting knife processes the burrs and flash, thereby reducing the possibility of window frames cutting users.

[0012] Optionally, the cutting knife includes a cutter head, a cutting sliding block, and a cutting cylinder. The cutting sliding block is slidably connected to the cutting frame along the length direction of the cutting screw. The cutting sliding block is threadedly connected to the cutting screw. The cutter head is slidably connected to the cutting sliding block along the thickness direction of the window frame edge. The cutting cylinder is used to drive the cutter head to move. The cutter head is provided with a scraping groove for scraping molten materials.

[0013] By adopting the above technical scheme, part of the molten material on the edge of the window frame will remain at the outer corner of the window frame to form burrs and flash, which will affect the staff in taking and installing the window frame. The burrs and flash at the outer corners of the window frame need to be removed in time; the staff first starts the cutting motor, and the cutting motor drives the cutting screw to rotate, and the cutting screw drives the cutting sliding block to move along the direction of the inclined surface of the window frame on the cutting frame, and the cutting block drives the cutter head to move, and the cutter head removes the burrs and flash in the thickness direction of the window frame. After completing the cleaning in the thickness direction of the window frame edge, the staff starts the cutting cylinder again, and the cutting cylinder drives the cutter head to move along the thickness direction of the window frame edge, and the scraping groove on the cutter head removes the burrs and flash at the outer corners of the window frame.

[0014] Optionally, the cutting frame is slidably connected to the welding seat along the inclined direction of the end surface of the window frame, and a driving cylinder for driving the cutting frame to move is provided on the welding seat.

[0015] By adopting the above technical solution, when the window frame is installed, the staff needs to remove the window frame from the corner assembly machine. Since the cutting slide block moves along the inclined direction of the window frame edge on the cutting frame, the inclined surface of the window frame is located at the positive projection of the cutting frame, which affects the removal of the window frame. The staff can drive the cylinder to move the cutting frame along the inclined direction of the window frame, so that the cutting frame is away from the window frame, making it easier for the staff to remove the window frame.

[0016] Optionally, the moving component includes two bidirectional screws and two moving motors, the two bidirectional screws are perpendicular to each other, the two spaced clamping seats are respectively threadedly connected to the thread segments of the bidirectional screws with opposite rotation directions, the two moving motors correspond one-to-one to the two bidirectional screws, and the moving motors drive the bidirectional screws to rotate.

[0017] By adopting the above technical solution, when the clamping seat needs to move to adjust the position of the window frame edge, the staff starts the moving motor, the moving motor drives the bidirectional screw to rotate, and the bidirectional screw drives the two clamping seats to move closer or farther away from each other, thereby achieving synchronous adjustment of the two relative window frame edges and improving the adjustment work efficiency.

[0018] Optionally, the clamping seat is also provided with an anti-slip component to reduce the window frame edge from detaching from the clamping seat during welding, the anti-slip component includes an anti-slip plate and an anti-slip motor, the anti-slip plate is rotatably connected to the clamping seat, the anti-slip plate is used to abut against the window frame edge, and the anti-slip motor is used to drive the anti-slip plate to rotate.

[0019] By adopting the above technical scheme, since the welding of the window frame edge is located on the welding seat, the molten material on the end face of the window frame edge is squeezed and overflows around the end face of the window frame, which is easy to lift the window frame edge off the clamping seat, and the adjacent window frame edges are not in the same plane, which can easily cause the window frame to be twisted and of poor quality. Through the anti-slip part, the anti-slip motor drives the anti-slip plate to rotate, and the anti-slip plate abuts against the window frame edge, thereby reducing the situation where the window frame edge is lifted up during the combination of the molten material, and the window frame edge is kept abutting against the welding seat under the abutment of the anti-slip part, thereby reducing the flow of the molten state toward the welding seat, and there is no need to process the window frame facing the welding seat, thereby improving the working efficiency of the equipment.

[0020] Optionally, an anti-slip roller is rotatably connected to the anti-slip plate, the anti-slip roller is parallel to the length direction of the corresponding window frame edge, and the anti-slip roller abuts against the corresponding window frame edge.

[0021] By adopting the above technical solution, when the clamping assembly fixes the window frame edge, the window frame edge is first abutted against the clamping seat by releasing the roller, and then the clamping plate is driven to move by the clamping cylinder, and the clamping plate and the clamping seat clamp the window frame edge. During the clamping process, the window frame edge will move, and the release roller will rotate and connect to the window frame edge, thereby reducing the friction with the window frame edge and improving the surface quality of the window frame edge.

[0022] Optionally, an anti-slip groove is provided on the clamping plate.

[0023] By adopting the above technical solution, the anti-skid groove improves the friction between the clamping plate and the window frame edge, and further reduces the window frame edge from separating from the welding seat under the action of mutual squeezing of molten materials.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The four window frame edges are clamped by the clamping assembly, the moving assembly drives the four window frame edges to move, and the four window frame edges are welded simultaneously by the welding assembly to improve work efficiency; 2. The alignment parts align the four window frame edges, which improves the production quality of the window frame, improves the fit between the window frame and the building opening, and improves the thermal insulation effect; 3. The anti-slip piece reduces the possibility of the window frame being separated from the welding seat due to the molten material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a corner assembly machine used for making plastic steel window frames.

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure of the anti-dropping part.

[0027] Figure 3 yes Figure 1 Schematic diagram of the structure of the welding assembly.

[0028] Figure 4 yes Figure 3 Schematic diagram of the structure of the cutting piece.

[0029] Reference numerals: 1, frame; 2, clamping assembly; 21, clamping seat; 211, placement groove; 212, sliding rod; 22, clamping cylinder; 23, clamping plate; 231, anti-slip groove; 24, clamping rod; 3, welding assembly; 31, welding seat; 32, welding piece; 321, welding plate; 322, welding cylinder; 33, alignment piece; 331, alignment plate; 332, alignment cylinder; 333, receiving groove; 3 4. Cutting piece; 341. Cutting frame; 342. Cutting knife; 343. Cutting screw; 344. Cutting motor; 4. Moving assembly; 41. Bidirectional screw; 42. Moving motor; 5. Anti-slipping piece; 51. Anti-slipping plate; 52. Anti-slipping motor; 53. Anti-slipping roller; 6. Cutter head; 61. Cutting sliding block; 62. Cutting cylinder; 63. Scraping groove; 64. Sliding groove; 65. Driving cylinder; 7. Window frame edge. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The present application embodiment discloses a corner assembly machine for manufacturing plastic steel window frames. Figure 1 and Figure 2 A corner assembly machine for making plastic steel window frames includes a frame 1, four clamping components 2, a welding component 3 and a moving component 4, the clamping component 2 is used to clamp the window frame edge 7, the welding component 3 is used to weld the end surface of the window frame edge 7, and the moving component 4 is used to drive the welding component 3 to move.

[0032] Reference Figure 1 and Figure 2 The upper end surface of the frame 1 is tilted, the moving component 4 includes two bidirectional screws 41 and two moving motors 42, the two bidirectional screws 41 are perpendicular to each other, the bidirectional screws 41 are rotatably connected to the upper end surface of the frame 1, the two moving motors 42 correspond to the two bidirectional screws 41 one by one, the moving motor 42 is fixedly arranged on the frame 1, and the output shaft of the moving motor 42 is fixedly connected to one end of the bidirectional screw 41.

[0033] Reference Figure 1 and Figure 2 , four clamping assemblies 2 are evenly distributed on the frame 1, and the clamping assemblies 2 include a clamping seat 21, a clamping cylinder 22, a clamping plate 23 and a clamping rod 24. Two groups of relative clamping assemblies 2 correspond to two bidirectional screws 41 one by one, respectively. The sliding direction of the clamping seat 21 is parallel to the length direction of the corresponding bidirectional screw 41. The clamping seats 21 of the relative clamping assemblies 2 are respectively threadedly connected to the threaded sections of the bidirectional screw 41 with opposite rotation directions. The upper end surface of the clamping seat 21 is provided with a placement groove 211 for placing the window frame edge 7. The cross-section of the clamping seat 21 is L-shaped. The length direction of the clamping rod 24 is parallel to the sliding direction of the clamping seat 21. One side of the clamping rod 24 The end is fixedly set on the clamping seat 21, the length direction of the clamping cylinder 22 is parallel to the length direction of the clamping rod 24, the cylinder body of the clamping cylinder 22 is fixedly set on the clamping seat 21, the clamping plate 23 is fixedly set on the piston rod of the clamping cylinder 22, the clamping rod 24 passes through the clamping plate 23, and the clamping plate 23 is provided with a plurality of anti-slip grooves 231 at one end of the clamping plate 23 facing the inner wall of the placement groove 211, and the plurality of anti-slip grooves 231 are distributed along the length direction of the clamping plate 23, the adjacent two side walls of the window frame edge 7 abut against the inner wall of the placement groove 211 and the inner bottom wall of the placement groove 211, and the clamping plate 23 abuts against the side wall of the window frame edge 7 away from the inner wall of the placement groove 211.

[0034] Reference Figure 1 and Figure 2The clamping assembly 2 is provided with an anti-slip component 5, which includes an anti-slip plate 51 and an anti-slip motor 52. The anti-slip plate 51 is rotatably connected to the clamping seat 21, and the rotation axis of the anti-slip plate 51 is parallel to the length direction of the corresponding window frame edge 7. An anti-slip roller 53 is rotatably connected to the anti-slip plate 51, and the length direction of the anti-slip roller 53 is parallel to the length direction of the corresponding window frame edge 7. The outer side wall of the anti-slip roller 53 is used to abut against the side wall of the window frame edge 7 away from the inner bottom wall of the placement groove 211. The anti-slip motor 52 is fixedly arranged on the clamping seat 21, and the output shaft of the anti-slip motor 52 is fixedly connected to the rotation axis of the anti-slip plate 51.

[0035] Reference Figure 2 and Figure 3 A sliding rod 212 is fixedly arranged on the clamping seat 21, and the length direction of the sliding rod 212 is parallel to the sliding direction of the adjacent clamping seat 21. The sliding rod 212 passes through the clamping seat 21. The welding assembly 3 includes four welding seats 31, four welding parts 32, and four alignment parts 33. The four welding seats 31 are staggered with the four clamping seats 21. The welding seats 31 are slidably connected to the sliding rods 212 of two adjacent clamping seats 21. The upper end surface of the welding seat 31 abuts against the lower end surface of the window frame edge 7. The four alignment parts 33 correspond to the four welding seats 31 one by one. The alignment parts 33 include an alignment plate 331 with And the alignment cylinder 332, the end face of the alignment plate 331 is parallel to the inclined direction of the window frame edge 7, the alignment plate 331 is slidably connected to the welding seat 31 in a direction perpendicular to the upper end face of the frame 1, the length direction of the alignment cylinder 332 is parallel to the sliding direction of the alignment plate 331, the alignment cylinder 332 is fixedly set on the welding seat 31, one end of the piston rod of the alignment cylinder 332 is fixedly set on the alignment plate 331, and the upper end face of the alignment plate 331 is provided with a receiving groove 333, the receiving groove 333 extends along the sliding direction of the alignment plate 331, and the receiving groove 333 runs through the two side walls of the alignment plate 331.

[0036] Reference Figure 2 and Figure 3 The four welding parts 32 correspond to the four welding seats 31 one by one. The welding parts 32 include a welding plate 321 and a welding cylinder 322. A heating wire that can melt the end face of the window frame edge 7 is arranged in the welding plate 321. The welding plate 321 is slidably connected to the welding seat 31 along the inclined direction of the end face of the window frame edge 7. The accommodating groove 333 is provided for the sliding of the welding plate 321. The length direction of the welding cylinder 322 is parallel to the sliding direction of the welding plate 321. The welding cylinder 322 is fixedly arranged on the welding seat 31, and the piston rod of the welding cylinder 322 is fixedly arranged on the welding plate 321.

[0037] Reference Figure 3 and Figure 4The welding seat 31 is also provided with a cutting member 34, which includes a cutting frame 341, a cutting knife 342, a cutting screw 343 and a cutting motor 344. The cutting frame 341 is slidably connected to the welding seat 31 along the inclination direction of the end face of the window frame edge 7. The cutting knife 342 includes a cutter head 6, a cutting sliding block 61 and a cutting cylinder 62. The length direction of the cutting screw 343 is parallel to the inclination direction of the end face of the window frame edge 7. The cutting screw 343 is rotatably connected to the cutting frame 341. The cutting motor 344 is fixedly arranged on the cutting frame 341. The cutting motor 344 drives the cutting screw 343 to rotate. The cutting sliding block 61 is slidably connected to the cutting frame 341 along the length direction of the cutting screw 343. The cutting sliding block 61 is threadedly connected to the cutting screw 343. The cutter head 6 is along the window frame edge. 7 is slidably connected to the cutting sliding block 61 in the thickness direction, the length direction of the cutting cylinder 62 is parallel to the moving direction of the cutter head 6, the cylinder body of the cutting cylinder 62 is fixedly set on the cutting sliding block 61, one end of the piston rod of the cutting cylinder 62 is fixedly set on the cutter head 6, and the cutter head 6 is used to scrape the molten material overflowing from the side wall of the window frame edge 7. The cutting frame 341 is provided with a sliding groove 64 extending along the length direction of the cutting cylinder 62, and the sliding groove 64 is for the cutter head 6 to slide. The side wall of the cutter head 6 is provided with a scraping groove 63, and the scraping groove 63 is used to cut the molten material on the outer edge of the window frame. A driving cylinder 65 is fixedly set on the welding seat 31, and the length direction of the driving cylinder 65 is parallel to the sliding direction of the cutting frame 341. One end of the piston rod of the driving cylinder 65 is fixedly set on the cutting frame 341.

[0038] The implementation principle of the corner assembly machine for making plastic steel window frames in the embodiment of the present application is as follows: the staff first places four window frame edges 7 on four clamping components 2, and the window frame edges 7 are placed in the placement grooves 211 of the clamping seat 21, and then the anti-slip motor 52 is started, and the anti-slip motor 52 drives the anti-slip plate 51 to rotate, and the anti-slip roller 53 on the anti-slip plate 51 abuts against the side wall of the window frame edge 7 away from the bottom of the placement groove 211.

[0039] Then, the moving motor 42 is started, and the moving motor 42 drives the bidirectional screw 41 to rotate, and the bidirectional screw 41 drives the relative clamping seats 21 to approach at the same time until the window frame edge 7 abuts against the alignment plate 331. The alignment plate 331 keeps the distance between the adjacent window frame edges 7 and the welding plate 321 consistent, and the alignment plate 331 can ensure that the adjacent window frame edges 7 are perpendicular to each other, so that the staff can start the two moving motors 42 at the same time to change the position of the window frame edge 7. After the position of the window frame edge 7 is determined, the clamping cylinder 22 is started. The piston rod of the clamping cylinder 22 drives the clamping plate 23 to move, and the clamping plate 23 and the clamping seat 21 clamp the window frame edge 7. Then, the alignment plate 331 is separated from the window frame edge 7 by the alignment cylinder 332, and the welding plate 321 is exposed. At the same time, the two moving motors 42 are started, and the two ends of the four window frame edges 7 contact the welding plate 321 at the same time to form a molten state. Then, the welding plate 321 is separated from the window frame edge 7 by the welding cylinder 322, and the two moving motors 42 are started again to connect the four window frame edges 7 end to end to form a window frame.

[0040] The cutting motor 344 drives the cutting screw 343 to rotate, and the cutting screw 343 drives the cutting sliding block 61 to move, and the cutting sliding block 61 drives the cutter head 6 to move, and the cutter head 6 scrapes the molten material on the side wall of the window frame. When the cutter head 6 moves to the outer corner of the window frame, the cutting cylinder 62 is started, and the cutting cylinder 62 drives the cutter head 6 to move along the thickness direction of the window frame. The scraping groove 63 on the cutter head 6 scrapes the molten material at the outer corner of the window frame to complete the impurity removal work, and finally the driving cylinder 65 is started, and the driving cylinder 65 drives the cutting frame 341 to move, and the cutting frame 341 is away from the top of the window frame, so that the staff can remove the welded window frame.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A corner assembly machine for making plastic steel window frames. Features: The invention comprises a frame (1), four clamping assemblies (2) respectively used for clamping the window frame edge (7), a welding assembly (3) and a moving assembly (4), wherein the moving assembly (4) is used for driving the relative clamping assemblies (2) to move closer to or farther from each other, the clamping assembly (2) comprises a clamping seat (21), a clamping cylinder (22) and a clamping plate (23), the clamping seat (21) is slidably connected to the frame (1), the clamping plate (23) is slidably connected to the clamping seat (21), the sliding directions of adjacent clamping plates (23) are in the same plane and are perpendicular to each other, the clamping cylinder (22) is used for driving the clamping plates (23) to move, the clamping seat (21) and the clamping plate (23) clamp the window frame edge (7), and the welding assembly (3) is used for melting the two ends of the window frame edge (7).

2. A corner assembly machine for making plastic steel window frames according to claim 1, Features: The clamping seat (21) is provided with a sliding rod (212), the length of the sliding rod (212) is parallel to the sliding direction of the adjacent clamping seat (21), the welding assembly (3) comprises four welding seats (31) and four welding parts (32), the four welding seats (31) and the four clamping seats (21) are staggered, the welding seats (31) are respectively slidably connected to the sliding rods (212) corresponding to the adjacent clamping seats (21), the welding parts (32) comprise a welding plate (321) and a welding cylinder (322), the welding plate (321) is slidably connected to the welding seat (31), the two end surfaces of the welding plate (321) are respectively used to melt one end of the adjacent window frame edge (7), and the welding cylinder (322) is used to drive the welding plate (321) to slide.

3. A corner assembly machine for making plastic steel window frames according to claim 2, Features: The welding assembly (3) further comprises an alignment member (33), the alignment member (33) comprising an alignment plate (331) and an alignment cylinder (332), the alignment plate (331) being slidably connected to the welding plate (321), the two ends of the alignment plate (331) being respectively used to abut against one end of an adjacent window frame edge (7), the alignment plate (331) being provided with a receiving groove (333) for the welding plate (321) to slide, and the alignment cylinder (332) being used to drive the alignment plate (331) to move and expose the welding plate (321).

4. A corner assembly machine for making plastic steel window frames according to claim 2, Features: The welding seat (31) is provided with a cutting piece (34) for cutting excess molten material on the window frame. The cutting piece (34) comprises a cutting frame (341), a cutting knife (342), a cutting screw (343) and a cutting motor (344). The cutting frame (341) is provided on the welding seat (31). The length direction of the cutting screw (343) is parallel to the inclination direction of the end face of the window frame edge (7). The cutting screw (343) is rotatably connected to the cutting frame (341). The cutting motor (344) drives the cutting screw (343) to rotate. The cutting knife (342) is slidably connected to the cutting frame (341) along the length direction of the cutting screw (343). The cutting knife (342) is threadedly connected to the cutting screw (343). The cutting knife (342) is used to cut excess molten material after forming the window frame.

5. A corner assembly machine for making plastic steel window frames according to claim 4, Features: The cutting knife (342) comprises a cutting head (6), a cutting sliding block (61), and a cutting cylinder (62); the cutting sliding block (61) is slidably connected to the cutting frame (341) along the length direction of the cutting screw (343); the cutting sliding block (61) is threadedly connected to the cutting screw (343); the cutting head (6) is slidably connected to the cutting sliding block (61) along the thickness direction of the window frame edge (7); the cutting cylinder (62) is used to drive the cutting head (6) to move; and a scraping groove (63) for scraping molten material is provided on the cutting head (6).

6. A corner assembly machine for making plastic steel window frames according to claim 5, Features: The cutting frame (341) is slidably connected to the welding seat (31) along the inclined direction of the end face of the window frame edge (7), and a driving cylinder (65) for driving the cutting frame (341) to move is provided on the welding seat (31).

7. A corner assembly machine for making plastic steel window frames according to claim 1, Features: The moving assembly (4) comprises two bidirectional screws (41) and two moving motors (42). The two bidirectional screws (41) are perpendicular to each other. The two spaced clamping seats (21) are respectively threadedly connected to the threaded sections of the bidirectional screws (41) with opposite rotation directions. The two moving motors (42) correspond to the two bidirectional screws (41) one by one. The moving motors (42) drive the bidirectional screws (41) to rotate.

8. A corner assembly machine for making plastic steel window frames according to claim 1, Features: The clamping seat (21) is also provided with an anti-slipping member (5) for reducing the window frame edge (7) from detaching from the clamping seat (21) during welding. The anti-slipping member (5) comprises an anti-slipping plate (51) and an anti-slipping motor (52). The anti-slipping plate (51) is rotatably connected to the clamping seat (21). The anti-slipping plate (51) is used to abut against the window frame edge (7). The anti-slipping motor (52) is used to drive the anti-slipping plate (51) to rotate.

9. A corner assembly machine for making plastic steel window frames according to claim 8, Features: An anti-slipping roller (53) is rotatably connected to the anti-slipping plate (51); the anti-slipping roller (53) is parallel to the length direction of the corresponding window frame edge (7); and the anti-slipping roller (53) abuts against the corresponding window frame edge (7).

10. A corner assembly machine for making plastic steel window frames according to claim 1, Features: An anti-slip groove (231) is provided on the clamping plate (23).

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