System door and window screw corner combining device

Abstract

The utility model relates to a system door and window screw corner combining device which comprises a machine frame, the front end of the machine frame is arranged to be in a right angle shape, a working table is arranged at the upper end of the machine frame, a front positioning mechanism and a rear lifting positioning mechanism are longitudinally arranged on the working table in a spaced mode, and three translation mechanisms are arranged on the two sides of the front end of the working table respectively. A mounting base is arranged at the tail end of the three-translation mechanism, the three-translation mechanism can drive the mounting base to vertically ascend and descend, move in the length direction of the sectional material and move in the direction perpendicular to the length direction of the sectional material in sequence, and a punching mechanism and an automatic screw locking mechanism are arranged on the mounting base in the length direction of the sectional material at intervals. The punching mechanism is used for machining holes in a profile, the automatic screw locking mechanism screws screws into a corner connector to connect the profile with the corner connector in a threaded mode, an automatic glue injection mechanism is arranged on at least one mounting base, and sealant is injected into the profile through the automatic glue injection mechanism. The corner combining machine has the advantages of reasonable structural design, multiple functions, good corner combining quality, high corner combining comprehensive efficiency and the like.

Description

Technical field:

[0001] The utility model relates to the technical field of door and window corner assembly, in particular to a system door and window screw corner assembly device. Background technology:

[0002] Corner assembly is an indispensable process in the production and processing of doors and windows. The traditional corner assembly method is mainly based on punching and riveting, that is, a corner assembly knife is used to impact the door and window profiles to cause cold punching and deformation of the profiles. The cold punched deformed part cooperates with the angle code to achieve corner connection. For example, the synchronous feeding punching and riveting mechanism of the aluminum door and window corner assembly machine disclosed in the Chinese patent (authorization announcement number: CN2561537Y) has realized the mechanized processing of door and window corner assembly with positive effects. With the continuous and vigorous development of the door and window industry, especially the promotion and application of home decoration and system doors and windows, higher requirements are put forward for the corner assembly of doors and windows, which not only require high corner assembly quality, but also reliable stability. The existing punching and riveting corner assembly machines mainly rely on hydraulic or pneumatic pressure to drive punching and riveting, and the feeding movement accuracy of hydraulic or pneumatic drive is not very high, which makes it difficult to accurately rivet the quality; in addition, the connection between the cold punching deformation part and the corner code will become loose due to force or transportation, which will lead to a decrease in the quality of corner assembly. The more typical one is the appearance of gaps on the fitting surface, and the rainproof, moisture-proof and thermal insulation effects are reduced.

[0003] Screw corner assembly is a new corner assembly process in recent years. Its verification concept is to use screws to connect the door and window profiles and corner codes, thereby improving the quality and reliability of corner assembly. Screws can be automatically screwed and driven by a screw locking machine. The application of screw corner assembly machines has significantly improved the quality and reliability of door and window corner assembly. Most of the existing screw corner assembly machines can only realize the function of driving screws. The functions are relatively simple and cannot perform drilling and glue injection, or flexibly drill holes and assemble corners according to the actual situation of the profile, which limits the further improvement of the processing efficiency of door and window corner assembly. Therefore, it is necessary to re-layout and optimize the screw corner assembly machine in order to achieve efficient door and window corner assembly.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility model content:

[0005] The utility model aims to solve the problems existing in the prior art and provide a system door and window screw corner assembly device, which has the advantages of reasonable structural design, diverse functions, good corner assembly quality, high comprehensive corner assembly efficiency, etc.

[0006] The utility model achieves the above-mentioned purpose by adopting the following technical solutions:

[0007] A screw angle assembly device for system doors and windows includes a frame, the front end of the frame is set at a right angle, the upper end of the frame is provided with a workbench, the front positioning mechanism and the rear lifting positioning mechanism are longitudinally spaced on the workbench, three translation mechanisms are respectively provided on both sides of the front end of the workbench, and the ends of the three translation mechanisms are provided with mounting seats, the three translation mechanisms can drive the mounting seats to perform vertical lifting and lowering, movement along the length direction of the profile and movement perpendicular to the length direction of the profile in sequence, the mounting seats are provided with punching mechanisms and automatic screw locking mechanisms at intervals along the length direction of the profile, the punching mechanism is used to process holes on the profile, the automatic screw locking mechanism screws the screws into the angle code to thread the profile and the angle code, at least one of the mounting seats is provided with an automatic glue injection mechanism, and the automatic glue injection mechanism injects sealant into the profile.

[0008] The three-translational mechanism includes a guide rail A vertically arranged on the front end side wall of the frame, a slide A is provided on the guide rail A, a motor A is vertically provided on the frame, the motor A is connected to a lead screw A, the lead screw A is rotatably arranged on the frame, a nut seat A and a nut A are provided on the slide A, the lead screw A is installed on the nut A, a guide rail B is provided on the slide A along the length direction of the profile, a slide B is provided on the guide rail B, a motor B is provided at the end of the slide A, the motor B is connected to a lead screw B, the lead screw B is rotatably arranged on the slide A, a nut seat B and a nut B are provided on the slide B, the lead screw B is installed on the nut B, a guide rail C is provided on the slide B along a direction perpendicular to the profile, the guide rail C is provided with the mounting seat, a motor C is provided at the end of the slide B, the motor C is connected to a lead screw C, the lead screw C is rotatably arranged on the slide B, a nut seat C and a nut C are provided at the lower end of the mounting seat, and the lead screw C is installed on the nut C.

[0009] The punching mechanism includes a punching guide rail arranged perpendicular to the profile, a punching slide is provided on the punching guide rail, a punching motor is provided on the punching slide, a punching tool is provided on the punching motor, a punching cylinder is provided on the mounting seat, and the punching cylinder is connected to the punching slide.

[0010] The automatic screw locking mechanism includes a feed guide rail arranged perpendicular to the profile, a feed slide is provided on the feed guide rail, a feed cylinder is provided on the mounting seat, the feed cylinder is connected to the feed slide, an electric screwdriver is provided on the feed slide, a screw claw cooperating with the electric screwdriver is provided at the front end of the mounting seat, a feeding pipe is provided on the screw claw, and the feeding pipe is connected to the nail feeding machine.

[0011] The automatic glue injection mechanism includes a glue bottle seat arranged on a mounting seat, the glue bottle seat is provided with two mounting positions, the rear end of the glue bottle seat is provided with a glue injection guide rail along a direction perpendicular to the profile, the glue injection guide rail is provided with a glue injection slide, the glue injection slide is provided with a glue injection nut, the glue injection nut is provided with a glue injection screw, the glue injection screw is connected to a glue injection motor arranged on the mounting seat, two push rods are provided on the glue injection slide at intervals, the push rods act on the glue bottle to extrude the sealant, and a glue nozzle is provided at the front end of the glue injection slide.

[0012] The front positioning mechanism comprises two front positioning plates arranged at the front end of the workbench, the two front positioning plates are arranged at 90 degrees and along the length direction of the profile, and side positioning eccentric wheels are respectively arranged on both sides of the workbench.

[0013] The rear lifting positioning mechanism includes a longitudinally arranged positioning guide rail, a positioning slide is provided on the positioning guide rail, a positioning motor is longitudinally arranged on the workbench, the positioning motor is connected to a positioning screw, the positioning screw is rotatably arranged at the lower end of the workbench, the positioning slide is provided with a positioning nut seat and a positioning nut, the positioning screw is installed on the positioning nut, a vertical plate is vertically arranged on the positioning slide, a lifting slider is vertically arranged on the vertical plate, a lifting guide rail is provided on the lifting slide, a lifting motor is vertically arranged at the lower end of the vertical plate, the lifting motor is connected to a lifting screw, the lifting screw is rotatably arranged on the vertical plate, a lifting nut seat and a lifting nut are provided on the lifting slide, the lifting screw is arranged on the lifting nut, a rear positioning block is provided at the upper end of the lifting slide, and a corresponding avoidance opening for lifting the rear positioning block is provided on the workbench.

[0014] The utility model adopts the above structure, which can bring the following beneficial effects:

[0015] By setting three translation mechanisms on the left and right sides of the workbench respectively, it is possible to achieve both mutual cooperation in angle assembly and independent work according to actual needs, such as glue injection on one side. By designing a punching mechanism and an automatic screw locking mechanism, not only can holes be punched according to actual needs, but also screws can be screwed into the threaded holes of the angle code to achieve screw angle assembly. If the profile has been pre-processed with mounting holes, no drilling is required. By designing an automatic glue injection mechanism, two-component sealant can be injected into the profile through the glue injection hole for sealing. Of course, if the profile has no glue injection hole processed in advance, the glue injection hole can also be processed on the profile through the punching mechanism to achieve glue injection. By adopting a servo screw drive to drive the rear lifting and positioning mechanism, it not only has high transmission accuracy, but also can be locked, thereby improving the impact resistance during angle assembly and thus improving the quality of angle assembly. Description of the drawings:

[0016] Figure 1 It is a top view of the screw corner assembly device for doors and windows of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the three-translational mechanism of the utility model;

[0018] Figure 3 It is a partial top view of the three-translational mechanism of the utility model;

[0019] Figure 4 This is a top view of the three-translational mechanism of the utility model with the mounting seat omitted at the upper end;

[0020] Figure 5 It is a structural schematic diagram of the punching mechanism, automatic screw locking mechanism and automatic glue injection mechanism of the utility model;

[0021] Figure 6 It is a top view of the rear lifting and positioning mechanism of the utility model;

[0022] Figure 7 This is a front view of the rear lifting and positioning mechanism of the utility model;

[0023] In the figure, 1, frame, 2, workbench, 3, front positioning mechanism, 301, front positioning plate, 4, rear lifting positioning mechanism, 401, positioning guide rail, 402, positioning slide seat, 403, positioning motor, 404, positioning screw, 405, positioning nut seat, 406, positioning nut, 407, vertical plate, 408, lifting guide rail, 409, lifting slide seat, 410, lifting motor, 411, lifting screw, 412, lifting nut seat, 413, lifting nut, 414, rear positioning block, 415, lifting slider, 5, three-translation mechanism, 501, guide rail A, 502, slide seat A, 503, motor A, 504, lead screw A, 505, nut seat A, 506, nut A, 507, guide rail B, 508, slide seat B, 509, motor B, 510, lead screw B, 511, nut seat B, 512, Nut B, 513, guide rail C, 514, motor C, 515, lead screw C, 516, nut seat C, 517, nut C, 6, mounting seat, 7, punching mechanism, 701, punching guide rail, 702, punching slide seat, 703, punching motor, 704, punching tool, 705, punching cylinder, 8, automatic screw locking mechanism, 801, feed guide rail, 802, feed slide seat, 803, feed cylinder , 804, electric screwdriver, 805, screw claw, 806, feeding tube, 9, automatic glue injection mechanism, 901, glue bottle seat, 902, mounting position, 903, glue injection guide rail, 904, glue injection slide, 905, glue injection nut, 906, glue injection screw, 907, glue injection motor, 908, push rod, 909, glue nozzle, 910, glue bottle, 10, side positioning eccentric wheel, 11, profile, 12, avoid opening. Specific implementation method:

[0024] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0026] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0027] In addition, the terms "transverse", "longitudinal", "vertical", "front end", "rear end", "A", "B", "C", etc. are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the position of the indicated technical features.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "provided with", "set", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1-7As shown, the system door and window screw angle assembly device includes a frame 1, the front end of the frame 1 is set to a right angle, the upper end of the frame 1 is provided with a workbench 2, the workbench 2 is longitudinally spaced apart with a front positioning mechanism 3 and a rear lifting positioning mechanism 4, the front ends of the workbench 2 are respectively provided with three translation mechanisms 5, the ends of the three translation mechanisms 5 are provided with a mounting seat 6, the three translation mechanisms 5 can drive the mounting seat 6 to perform vertical lifting and lowering, movement along the length direction of the profile and movement in a direction perpendicular to the length of the profile 11 in sequence, the mounting seat 6 is provided with a punching mechanism 7 and an automatic screw locking mechanism 8 at intervals along the length direction of the profile 11, the punching mechanism 7 is used to process holes on the profile 11, the automatic screw locking mechanism 8 screws the screws into the angle code to thread the profile 11 and the angle code, at least one of the mounting seats 6 is provided with an automatic glue injection mechanism 9, the automatic glue injection mechanism 9 injects sealant into the profile 11. By arranging three translation mechanisms 5 on the left and right sides of the workbench 2, it is possible to cooperate with each other in angle assembly and work independently according to actual needs, such as glue injection on one side. By designing the punching mechanism 7 and the automatic screw locking mechanism 8, not only can holes be punched according to actual needs, but also screws can be screwed into the threaded holes of the angle code to achieve screw angle assembly. If the profile 11 has the installation holes processed in advance, there is no need to punch holes. By designing the automatic glue injection mechanism 9, it is possible to inject two-component sealant into the profile 11 through the glue injection hole for sealing. Of course, if the profile has no glue injection hole processed in advance, the glue injection hole can also be processed on the profile through the punching mechanism 7 to achieve glue injection.

[0030] The three-translational mechanism 5 includes a guide rail A vertically arranged on the front end side wall of the frame 1, a slide A is provided on the guide rail A, a motor A is vertically provided on the frame, the motor A is connected to a lead screw A, the lead screw A is rotatably arranged on the frame, a nut seat A and a nut A are provided on the slide A, the lead screw A is installed on the nut A, a guide rail B is provided on the slide A along the length direction of the profile, a slide B is provided on the guide rail B, a motor B is provided at the end of the slide A, the motor B is connected to a lead screw B, the lead screw B is rotatably arranged on the slide A, a nut seat B and a nut B are provided on the slide B, the lead screw B is installed on the nut B, a guide rail C is provided on the slide B along a direction perpendicular to the profile, the guide rail C is provided with the mounting seat, a motor C is provided at the end of the slide B, the motor C is connected to a lead screw C, the lead screw C is rotatably arranged on the slide B, a nut seat C and a nut C are provided at the lower end of the mounting seat, and the lead screw C is installed on the nut C. The specific structural form of the three-translational mechanism 5 is given, and the movement in space is realized by using a servo screw drive, which has the advantages of high speed, high transmission accuracy, and stability and reliability.

[0031] The punching mechanism 7 includes a punching rail 701 arranged perpendicular to the profile 11, a punching slide 702 is arranged on the punching rail 701, a punching motor 703 is arranged on the punching slide 702, a punching tool 704 is arranged on the punching motor 703, and a punching cylinder 705 is arranged on the mounting seat 6, and the punching cylinder 705 is connected to the punching slide 702. The specific structural form of the punching mechanism 7 is given, and the profile is punched according to actual needs, and the mounting holes required for mounting screws can be processed, and the injection holes for injection can also be processed.

[0032] The automatic screw locking mechanism 8 includes a feed rail 801 arranged perpendicular to the profile 11, a feed slide 802 is arranged on the feed rail 801, a feed cylinder 803 is arranged on the mounting seat 6, the feed cylinder 803 is connected to the feed slide 802, an electric screwdriver 804 is arranged on the feeding slide 802, a screw claw 805 is arranged at the front end of the mounting seat 6 to cooperate with the electric screwdriver 804, a feed pipe 806 is arranged on the screw claw 805, and the feed pipe 806 is connected to a nail feeding machine (in the prior art, pneumatic nail feeding is generally used, and screws are also called screws). The working principle and structure of screw locking are relatively mature, and this application mainly uses it in this application to realize the work of automatically screwing and tightening screws. In actual applications, the automatic screw locking mechanism 8 can be directly purchased or customized.

[0033] The automatic glue injection mechanism 9 includes a glue bottle seat 901 arranged on a mounting seat, two mounting positions 902 are arranged on the glue bottle seat 901, a glue injection guide rail 903 is arranged at the rear end of the glue bottle seat 901 along a direction perpendicular to the profile, a glue injection slide 904 is arranged on the glue injection guide rail 903, a glue injection nut 905 is arranged on the glue injection nut 905, a glue injection screw 906 is arranged on the glue injection nut 905, and the glue injection screw 906 is connected to a glue injection motor 907 arranged on the mounting seat 6, two push rods 908 are arranged on the glue injection slide 904 at intervals, and the push rods 908 act on the glue bottle 910 to squeeze out the sealant, and a glue nozzle 909 is arranged at the front end of the glue injection slide 904. The use of servo screw drive for glue injection can not only overcome the adverse effects caused by the temperature, but also make the glue output more accurate and reliable.

[0034] The front positioning mechanism 3 includes two front positioning plates 301 arranged at the front end of the workbench 2, the two front positioning plates 301 are arranged at 90 degrees and arranged along the length direction of the profile 11, and the side positioning eccentric wheels 10 are respectively arranged on both sides of the workbench 2 to realize the positioning of the ends of the two profiles 11 at a 90 degree angle.

[0035] The rear lifting and positioning mechanism 4 includes a positioning guide rail 401 longitudinally arranged at the lower end of the workbench 2, a positioning slide 402 is arranged on the positioning guide rail 401, a positioning motor 403 is longitudinally arranged on the workbench 2, the positioning motor 403 is connected with a positioning screw 404, the positioning screw 404 is rotatably arranged at the lower end of the workbench 2, a positioning nut seat 405 and a positioning nut 406 are arranged on the positioning slide 402, the positioning screw 404 is installed on the positioning nut 406, a vertical plate 407 is vertically arranged on the positioning slide 402, and a lifting slider 415 is vertically arranged on the vertical plate 407. The lifting slide block 415 is provided with a lifting guide rail 408, and the lifting guide rail 408 is provided with a lifting slide 409. The lower end of the vertical plate 407 is vertically provided with a lifting motor 410, and the lifting motor 410 is connected with a lifting screw 411, and the lifting screw 411 is rotatably arranged on the vertical plate 407. The lifting slide 409 is provided with a lifting nut seat 412 and a lifting nut 413, and the lifting screw 411 is arranged on the lifting nut 413. The upper end of the lifting slide 409 is provided with a rear positioning block 414, and the corresponding workbench 2 is provided with an avoidance opening 12 for the lifting of the rear positioning block 414. The specific structure of the rear lifting positioning mechanism 4 is given, and the positioning feeding and lifting actions are all realized by servo screw transmission, which has high transmission accuracy, and the servo motor has a locking function, which can prevent the back-off problem during the angle assembly, thereby improving the angle assembly quality.

[0036] Instructions for use of the system door and window screw angle assembly device in this application:

[0037] First, place the angle code in the profile. The angle code here belongs to the prior art. The threaded holes for angle assembly are pre-processed on the angle code. Then, two profiles 11 are spliced ​​into 90° and placed on the workbench 2. The front positioning plate 301 and the side positioning eccentric wheel 10 are used for front positioning. The lifting motor 410 is started. The lifting motor 410 performs corresponding lifting and lowering according to the specifications of the profile 11. The positioning motor 403 is started. The positioning motor 403 drives the rear positioning block 414 to position the profile 11 at the rear. The profile 11 is pressed together with the vertical clamping mechanism (which belongs to the prior art, using a cylinder bracket, a clamping cylinder is vertically installed on the cylinder bracket, and a clamping block is provided on the clamping cylinder. The profile is vertically pressed by starting the clamping cylinder) to complete the angle assembly, positioning and clamping work of the profile 11.

[0038] If the profile 11 is pre-processed with mounting holes (corresponding to the threaded holes on the angle code, for mounting screws) and glue injection holes, screw locking and glue injection can be performed directly through the three-translation mechanism 5, the automatic screw locking mechanism 8 and the automatic glue injection mechanism 9. If the profile 11 is not pre-processed with mounting holes and / or glue injection holes, the mounting holes and / or glue injection holes can be processed by the punching mechanism 7 first, and then screw locking and glue injection can be performed. Finally, the profile 11 can be removed after the screw angle assembly and glue injection are completed.

[0039] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0040] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. The screw angle assembly device for system doors and windows is characterized by: The machine comprises a frame, the front end of the frame is arranged at a right angle, a workbench is arranged at the upper end of the frame, a front positioning mechanism and a rear lifting positioning mechanism are longitudinally spaced apart on the workbench, three translation mechanisms are respectively arranged on both sides of the front end of the workbench, a mounting seat is arranged at the end of the three translation mechanisms, the three translation mechanisms can drive the mounting seat to perform vertical lifting and lowering, movement along the length direction of the profile and movement perpendicular to the length direction of the profile in sequence, a punching mechanism and an automatic screw locking mechanism are spaced apart on the mounting seat along the length direction of the profile, the punching mechanism is used for processing holes on the profile, the automatic screw locking mechanism screws the screws into the angle code to thread the profile and the angle code, at least one of the mounting seats is provided with an automatic glue injection mechanism, the automatic glue injection mechanism injects sealant into the profile.

2. The system door and window screw angle assembly device according to claim 1, characterized in that: The three-translational mechanism includes a guide rail A vertically arranged on the front end side wall of the frame, a slide A is provided on the guide rail A, a motor A is vertically provided on the frame, the motor A is connected to a lead screw A, the lead screw A is rotatably arranged on the frame, a nut seat A and a nut A are provided on the slide A, the lead screw A is installed on the nut A, a guide rail B is provided on the slide A along the length direction of the profile, a slide B is provided on the guide rail B, a motor B is provided at the end of the slide A, the motor B is connected to a lead screw B, the lead screw B is rotatably arranged on the slide A, a nut seat B and a nut B are provided on the slide B, the lead screw B is installed on the nut B, a guide rail C is provided on the slide B along a direction perpendicular to the profile, the guide rail C is provided with the mounting seat, a motor C is provided at the end of the slide B, the motor C is connected to a lead screw C, the lead screw C is rotatably arranged on the slide B, a nut seat C and a nut C are provided at the lower end of the mounting seat, and the lead screw C is installed on the nut C.

3. The system door and window screw angle assembly device according to claim 1 or 2, characterized in that: The punching mechanism includes a punching guide rail arranged perpendicular to the profile, a punching slide is provided on the punching guide rail, a punching motor is provided on the punching slide, a punching tool is provided on the punching motor, a punching cylinder is provided on the mounting seat, and the punching cylinder is connected to the punching slide.

4. The system door and window screw angle assembly device according to claim 3, characterized in that: The automatic screw locking mechanism includes a feed guide rail arranged perpendicular to the profile, a feed slide is provided on the feed guide rail, a feed cylinder is provided on the mounting seat, the feed cylinder is connected to the feed slide, an electric screwdriver is provided on the feed slide, a screw claw cooperating with the electric screwdriver is provided at the front end of the mounting seat, a feeding pipe is provided on the screw claw, and the feeding pipe is connected to the nail feeding machine.

5. The system door and window screw angle assembly device according to claim 4, characterized in that: The automatic glue injection mechanism includes a glue bottle seat arranged on a mounting seat, the glue bottle seat is provided with two mounting positions, the rear end of the glue bottle seat is provided with a glue injection guide rail along a direction perpendicular to the profile, the glue injection guide rail is provided with a glue injection slide, the glue injection slide is provided with a glue injection nut, the glue injection nut is provided with a glue injection screw, the glue injection screw is connected to a glue injection motor arranged on the mounting seat, two push rods are provided on the glue injection slide at intervals, the push rods act on the glue bottle to extrude the sealant, and a glue nozzle is provided at the front end of the glue injection slide.

6. The system door and window screw angle assembly device according to claim 5, characterized in that: The front positioning mechanism comprises two front positioning plates arranged at the front end of the workbench, the two front positioning plates are arranged at 90 degrees and along the length direction of the profile, and side positioning eccentric wheels are respectively arranged on both sides of the workbench.

7. The system door and window screw angle assembly device according to claim 6, characterized in that: The rear lifting positioning mechanism includes a longitudinally arranged positioning guide rail, a positioning slide is provided on the positioning guide rail, a positioning motor is longitudinally arranged on the workbench, the positioning motor is connected to a positioning screw, the positioning screw is rotatably arranged at the lower end of the workbench, the positioning slide is provided with a positioning nut seat and a positioning nut, the positioning screw is installed on the positioning nut, a vertical plate is vertically arranged on the positioning slide, a lifting slider is vertically arranged on the vertical plate, a lifting guide rail is provided on the lifting slide, a lifting motor is vertically arranged at the lower end of the vertical plate, the lifting motor is connected to a lifting screw, the lifting screw is rotatably arranged on the vertical plate, a lifting nut seat and a lifting nut are provided on the lifting slide, the lifting screw is arranged on the lifting nut, a rear positioning block is provided at the upper end of the lifting slide, and a corresponding avoidance opening for lifting the rear positioning block is provided on the workbench.

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