Intelligent lifting feeding device for polyurethane sandwich panel edge banding machine production and processing

Abstract

This invention relates to the field of edge banding machine feeding technology, and in particular to an intelligent lifting and feeding device for the production and processing of polyurethane sandwich panels. The device includes a horizontal processing frame and side guide plates installed on both sides of the upper end of the frame. Built-in and external electrically controlled forming wheel sets are respectively mounted on the side walls of the side guide plates. This invention, through the linkage control of an AI optical recognition lens and various electronically controlled components, can automatically identify the thickness, length, and other specifications of the polyurethane sandwich panel, driving the built-in and external electrically controlled forming wheel sets to adaptively adjust the vertical spacing. Simultaneously, it regulates the electrically controlled lifting and translation feeding device to adjust the lifting height, eliminating the need for manual adjustment and significantly improving the device's intelligence and adaptability to different panel specifications.

Description

Technical Field

[0001] This invention relates to the field of edge banding machine feeding technology, and in particular to an intelligent lifting and feeding device for the production and processing of polyurethane sandwich panel edge banding machines. Background Technology

[0002] Polyurethane sandwich panels are composite panels made of flame-retardant rigid polyurethane foam as the core material and color-coated steel sheets or similar materials as the surface material, manufactured through a continuous molding process. They are heat-insulating, load-bearing, and durable composite panels with excellent properties such as heat insulation, fire resistance, waterproofing, and lightweight. They are widely used in the enclosure systems of industrial plants, logistics warehouses, and prefabricated houses. To ensure their airtightness and structural integrity, edge banding machines are used to seal the edges of the panels. The feeding mechanism, as the core component of the edge banding machine, directly determines the precision and efficiency of the edge banding process.

[0003] Currently, the feeding method of polyurethane sandwich panel edge banding machines is mainly automatic conveying feeding. The material is clamped and conveyed to the edge banding station at a uniform speed through the central transmission wheel set, pressure roller or crawler mechanism on the conveyor frame, in conjunction with the pneumatic clamping device. Some feeding mechanisms are equipped with self-correcting wheel sets, which can adjust the slightly skewed material to ensure conveying accuracy.

[0004] While this type of feeding method has certain advantages, such as saving labor costs and improving conveying efficiency, it cannot automatically adapt to the thickness and length of the board, resulting in a very limited level of intelligence. Furthermore, it cannot be linked with the components of the subsequent processing section, leading to poor coordination between the feeding speed and the edge banding process. This restricts the overall quality and efficiency of edge banding processing and fails to meet the needs of large-scale, high-precision production. Summary of the Invention

[0005] The technical problem that this invention aims to solve is that current feeding devices cannot automatically adjust themselves according to the thickness and length of the board material, resulting in a very limited level of intelligence. Furthermore, they cannot be linked with the components of the subsequent processing section, leading to poor coordination between the feeding speed and the edge banding process. This restricts the overall quality and efficiency of edge banding processing and fails to meet the needs of large-scale, high-precision production.

[0006] The technical solution adopted by the present invention to solve its technical problem is: an intelligent lifting and feeding device for the production and processing of polyurethane sandwich panel edge banding machine, including a horizontal processing frame and side guide plates installed on both sides of the upper end of the horizontal processing frame. The side guide plates are respectively equipped with built-in electronically controlled forming wheel sets and external electronically controlled forming wheel sets on the side walls. Several electronically controlled lifting and translation feeding devices are movably installed at the feeding end inside the horizontal processing frame. An external monitoring cover with a built-in AI optical recognition lens is fixedly installed on the horizontal processing frame around the electronically controlled lifting and translation feeding devices.

[0007] The side guide plate is fitted with several embedded guide rails, and a longitudinally placed electrically controlled lead screw is rotatably mounted inside the embedded guide rail. The longitudinally placed electrically controlled lead screw is in transmission cooperation with the built-in electrically controlled forming wheel set and the external electrically controlled forming wheel set.

[0008] The built-in electronically controlled forming wheel assembly includes an inner mounting plate, an internally threaded lifting seat that is fixed as an integral structure with the inner mounting plate, and a lower forming wheel assembly mounted on the outer mounting plate. The inner mounting plate is threaded onto the longitudinally placed electronically controlled lead screw through the internally threaded lifting seat and is vertically slidably assembled along the inner side of the side guide plate.

[0009] The externally mounted electronically controlled forming wheel assembly includes an outer mounting plate that slides vertically along the outer side of the side guide plate, an internally threaded external lifting seat that is fixed as an integral structure with the outer mounting plate, and an upper forming wheel assembly mounted on the outer mounting plate. The outer mounting plate is threaded onto the longitudinally mounted electronically controlled lead screw through the internally threaded external lifting seat and slides vertically along the outer side of the side guide plate.

[0010] The horizontal processing frame is symmetrically fixedly equipped with horizontally arranged built-in support rails on both sides of the inner wall, and the electrically controlled lifting and translation feeding device is horizontally slidably assembled along the built-in support rails.

[0011] The electrically controlled lifting and translating feeding device includes a mounting base frame that slides along a built-in support guide rail via a bottom electric drive wheel set, an electrically controlled lifting machine fixed inside the mounting base frame, a top support frame that slides on the upper end of the mounting base frame, a top support wheel set assembled on the upper end of the top support frame, and a transverse limiting support rod inserted inside the mounting base frame. The output end of the electrically controlled lifting machine is connected to the top support frame via a transmission.

[0012] The external monitoring cover is fixedly mounted on the outer wall of the horizontal processing machine frame by bolts, and the external monitoring cover is installed on the outside of the electrically controlled lifting and translation feeding device at the feeding end.

[0013] The external monitoring cover has lateral assembly openings on both sides and the top surface. The AI ​​optical recognition lens is inserted into the lateral assembly opening and fixedly assembled with the external monitoring cover. The recognition end of the AI ​​optical recognition lens faces the electrically controlled lifting and shifting feeding device.

[0014] A pressure sensing module is embedded at the upper end of the top support frame, located at the assembly end of the top support wheel assembly, and the pressure sensing module abuts against the assembly seat of the top support wheel assembly.

[0015] Several lateral limiting slots are provided on the inner walls of both sides of the horizontal machining frame along the length direction. The end of the transverse limiting support rod is fitted into the lateral limiting slot and engages with the horizontal machining frame.

[0016] The beneficial effects of this invention are: (1) By setting up an AI optical recognition lens and linking control of various electronic control components, the present invention can automatically identify the thickness, length and other specifications of polyurethane sandwich panels, drive the built-in and external electronic control molding wheel group to complete the vertical spacing adaptive adjustment, and at the same time control the electronic lifting and translation feeding device to complete the lifting height adjustment. No manual adjustment is required, which greatly improves the intelligence level of the device and the adaptability of different specifications of panels. (2) The electric lifting and translation feeding device of the present invention achieves horizontal uniform speed conveying through the cooperation of the bottom electric drive wheel group and the built-in support guide rail, and completes the lifting of the plate with the top support frame driven by the electric lifting machine. At the same time, the stability of the plate is ensured through the interlocking cooperation of the horizontal limit support rod and the side limit slot, effectively avoiding the plate conveying deviation and jamming problem, and improving the feeding accuracy. (3) The present invention monitors the feeding status and conveying speed of the board in real time through the AI ​​optical recognition lens of the external monitoring cover, feeds the monitoring data back to the control system and links the edge banding section, realizes the dynamic matching of feeding speed and edge banding speed, improves the synergy between feeding and edge banding processes, and thus improves the overall quality and production efficiency of edge banding. (4) All components of the present invention adopt an electronically controlled modular assembly structure, with precise transmission and coordination, convenient maintenance and repair, and can be adapted to large-scale polyurethane sandwich panel edge sealing production, reducing the intensity of manual operation and improving the level of automation in production. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a top view of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the electrically controlled lifting and translational feeding device in this invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the external monitoring cover in this invention.

[0022] Figure 5 This is a schematic diagram of the edge sealing mechanism in this invention.

[0023] 1. Horizontal processing frame; 2. Side guide plate; 3. Built-in electrically controlled forming wheel assembly; 4. External electrically controlled forming wheel assembly; 5. Electrically controlled lifting and translation feeding device; 6. External monitoring cover; 7. AI optical recognition lens; 8. Embedded guide rail; 9. Longitudinal electrically controlled lead screw; 10. Inner assembly plate; 11. Internally threaded lifting seat; 12. Lower forming wheel assembly; 13. Outer assembly plate; 14. Internally threaded external lifting seat; 15. Upper forming wheel assembly; 16. Built-in support guide rail; 17. Bottom electrically driven wheel assembly; 18. Mounting base frame; 19. Electrically controlled lifting mechanism; 20. Top support frame; 21. Top support wheel assembly; 22. Lateral limiting strut; 23. Side assembly port; 24. Pressure sensing module; 25. Lateral limiting slot. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The device shown is an intelligent lifting and feeding device for polyurethane sandwich panel edge banding production. The core components include a horizontal processing frame 1, side guide plates 2, built-in electrically controlled forming wheel assembly 3, external electrically controlled forming wheel assembly 4, electrically controlled lifting and translation feeding device 5, and external monitoring cover 6. The horizontal processing frame 1 serves as the main support structure of the entire device and is formed by welding of steel profiles to ensure structural strength and stability. There are two side guide plates 2, which are symmetrically welded to the upper edges of the horizontal processing frame 1 to provide an assembly and guiding foundation for the forming wheel assembly.

[0027] The side guide plate 2 has several embedded guide rails 8 vertically embedded inside. A longitudinally mounted electrically controlled lead screw 9 is rotatably mounted inside the embedded guide rails 8 via bearings. The longitudinally mounted electrically controlled lead screw 9 is connected to an external servo motor to provide power for the lifting and lowering of the forming wheel assembly. The side guide plate 2 has an internally mounted electrically controlled forming wheel assembly 3. This forming wheel assembly includes an inner mounting plate 10, an internally threaded lifting seat 11, and a lower forming wheel assembly 12. The internally threaded lifting seat 11 is integrally welded to the inner mounting plate 10, and the internally threaded lifting seat 11 is threaded onto the longitudinally mounted electrically controlled lead screw 9. The inner mounting plate 10 slides vertically along the embedded guide rails 8. The lower forming wheel assembly 12 is mounted on the upper end of the outer mounting plate 13 via a rotating shaft, used for guiding and forming the lower edge of the polyurethane sandwich panel. The side guide plate 2 An externally mounted electrically controlled forming wheel assembly 4 is provided on the outer side. This forming wheel assembly includes an outer mounting plate 13, an internally threaded external lifting seat 14, and an upper forming wheel assembly 15. The internally threaded external lifting seat 14 and the outer mounting plate 13 are integrally welded structures and are also threadedly mounted on the longitudinally placed electrically controlled lead screw 9. The outer mounting plate 13 slides vertically along the groove on the outer side of the side guide plate 2. The upper forming wheel assembly 15 is mounted on the lower end of the outer mounting plate 13 through a rotating shaft, corresponding vertically to the lower forming wheel assembly 12, thereby achieving clamping guidance and forming limit of the edge of the polyurethane sandwich panel. When the longitudinally placed electrically controlled lead screw 9 rotates, it can synchronously drive the internally threaded internal lifting seat 11 and the internally threaded external lifting seat 14 to move vertically, thereby adjusting the distance between the upper forming wheel assembly 15 and the lower forming wheel assembly 12 to adapt to polyurethane sandwich panels of different thicknesses.

[0028] The inner walls of both sides of the horizontal machining frame 1 are symmetrically welded with horizontally arranged built-in support rails 16. The built-in support rails 16 provide horizontal sliding guidance for the electrically controlled lifting and translational feeding device 5. The number of electrically controlled lifting and translational feeding devices 5 is set according to the length of the horizontal machining frame 1 and production needs, and they are evenly distributed along the built-in support rails 16. Each electrically controlled lifting and translational feeding device 5 includes a mounting base frame 18, a bottom electric drive wheel assembly 17, an electrically controlled lifting mechanism 19, a top support frame 20, and a top support. The support wheel assembly 21 and the lateral limiting support rod 22, along with the mounting base frame 18, are frame-type structures. The bottom of the frame is fitted with a bottom electric drive wheel assembly 17 via a bracket. The bottom electric drive wheel assembly 17 is snapped onto the built-in support guide rail 16, and is driven by a motor to achieve horizontal translation of the mounting base frame 18 along the built-in support guide rail 16. The electrically controlled lifting platform 19 adopts an electric push rod structure, which is bolted to the inner bottom of the mounting base frame 18. Its output end is connected to the bottom of the top support frame 20, and the top support frame 20 is slidably fitted onto the mounting base frame 18. The upper end of 8 can slide vertically along the mounting base frame 18 under the drive of the electric lifting machine 19, realizing the adjustment of the lifting height; the top support wheel assembly 21 is mounted on the upper end of the top support frame 20 through a rotating shaft, used to support the polyurethane sandwich panel and cooperate with the conveying of the panel. The upper end of the top support frame 20 has a pressure sensing module 24 embedded in the mounting end of the top support wheel assembly 21. The pressure sensing module 24 abuts against the mounting seat of the top support wheel assembly 21, which can detect the pressure between the panel and the top support wheel assembly 21 in real time, avoiding To prevent damage to the sheet metal due to excessive lifting, the transverse limiting strut 22 is inserted into the through holes on both sides of the mounting base frame 18. Several lateral limiting slots 25 are provided along the length direction on the inner walls on both sides of the horizontal processing frame 1. The end of the transverse limiting strut 22 can be locked into the lateral limiting slot 25 to achieve horizontal limiting of the mounting base frame 18, ensuring the stability of the electrically controlled lifting and shifting feeding device 5 during the conveying process. The locking position of the transverse limiting strut 22 can be adjusted according to the conveying requirements to adapt to different conveying strokes.

[0029] An external monitoring cover 6 is bolted to the periphery of the electrically controlled lifting and translating feeding device 5 on the horizontal processing frame 1. The external monitoring cover 6 is made of a transparent protective plate spliced ​​with a metal frame, which serves both a protective function and does not affect internal monitoring. The side walls and the top surface of the external monitoring cover 6 are provided with lateral mounting openings 23. The AI ​​optical recognition lens 7 is inserted into the lateral mounting openings 23 and fixed to the external monitoring cover 6 with bolts. The recognition end of the AI ​​optical recognition lens 7 faces the feeding end of the electrically controlled lifting and translating feeding device 5. It can collect the thickness, length and other specifications of the polyurethane sandwich panel, as well as the feeding status and conveying speed in real time, and feed the data back to the control system of the device to realize the linkage control of various electrical control components.

[0030] Working principle of this device This device uses an AI optical recognition lens 7 to perform real-time identification and data acquisition of the polyurethane sandwich panel specifications and feeding status. After transmitting the acquired data to the control system, the control system drives the longitudinally placed electric control screw 9 to rotate according to the panel parameters, synchronously adjusting the vertical spacing of the built-in electric control forming wheel set 3 and the external electric control forming wheel set 4. At the same time, it drives the electric control lifting mechanism 19 of the electric lifting and translation feeding device 5 to adjust the lifting height of the top support frame 20, achieving adaptive adjustment of the feeding and forming structure. The device is driven by the bottom electric drive wheel set 17. The controlled lifting and translation feeding device 5 moves horizontally along the built-in support guide rail 16, and works with the top support wheel group 21 to achieve uniform speed conveying of the board. The monitoring data of the pressure sensing module 24 and the AI ​​optical recognition lens 7 are fed back to the control system in real time, dynamically adjusting the conveying speed and lifting height. At the same time, the interlocking of the lateral limit support rod 22 and the side limit slot 25 ensures the stability of the conveying. Finally, the intelligent operation of polyurethane sandwich panels from automatic feeding, lifting and conveying to the edge banding station is realized, and the feeding speed and edge banding processing speed are dynamically matched to improve the process coordination.

[0031] The working process of this device Material preparation: Place the polyurethane sandwich panel to be sealed on the top support wheel group 21 of the electrically controlled lifting and translation feeding device 5 at the feeding end of the horizontal processing frame 1. The AI ​​optical recognition lens 7 inside the external monitoring cover 6 immediately collects the thickness, length and other specification parameters of the panel, and at the same time detects whether the placement position of the panel is offset, and transmits the data to the control system of the device.

[0032] Adaptive adjustment: Based on the plate thickness parameters collected by the AI ​​optical recognition lens 7, the control system drives the longitudinally placed electric control screw 9 in the side guide plate 2 to rotate. The longitudinally placed electric control screw 9 drives the internal thread lifting seat 11 and the external thread lifting seat 14 to move vertically through the threaded transmission, thereby adjusting the vertical distance between the lower forming wheel set 12 and the upper forming wheel set 15 to match the plate thickness. At the same time, the control system drives the electric lifting machine 19 to move. The electric lifting machine 19 pushes the top support frame 20 to slide vertically along the mounting base frame 18, lifting the plate to the preset conveying height. The pressure sensing module 24 detects the pressure between the plate and the top support wheel set 21 in real time to avoid excessive pressure damaging the plate. If the pressure exceeds the preset value, the control system will fine-tune the lifting height of the electric lifting machine 19.

[0033] Limiting and fixing: According to the conveying stroke requirements of the board, the end of the lateral limiting support rod 22 of the electrically controlled lifting and shifting feeding device 5 is clamped in the corresponding lateral limiting slot 25 on the inner wall of the horizontal processing frame 1 to realize the horizontal limiting of the mounting base frame 18, ensuring the stability of the electrically controlled lifting and shifting feeding device 5 during subsequent conveying and preventing the board from shifting during conveying.

[0034] Intelligent feeding: The control system drives the bottom electric drive wheel assembly 17 to rotate. The bottom electric drive wheel assembly 17 slides horizontally and uniformly along the built-in support guide rail 16, driving the plate with the mounting frame 18 and the top to move towards the edge banding station. The top support wheel assembly 21 rotates synchronously with the movement of the plate, reducing the friction between the plate and the support structure. The AI ​​optical recognition lens 7 monitors the conveying speed of the plate in real time and feeds the data back to the control system. The control system dynamically adjusts the rotation speed of the bottom electric drive wheel assembly 17 according to the processing speed of the edge banding section to achieve coordinated matching between the feeding speed and the edge banding processing speed. If the AI ​​optical recognition lens 7 detects a deviation during the plate conveying process, the control system will fine-tune the conveying speed of the adjacent electrically controlled lifting and translation feeding device 5 to correct the deviation of the plate in real time.

[0035] Forming guidance: During the conveying process, the two sides of the board enter the gap between the lower forming wheel set 12 and the upper forming wheel set 15. The lower forming wheel set 12 and the upper forming wheel set 15 rotate synchronously with the conveying of the board, clamping and guiding the edges of the board and performing preliminary forming, ensuring that the board enters the edge banding station smoothly to complete the edge banding process.

[0036] Cyclic operation: After a single polyurethane sandwich panel is fed and enters the edge sealing station, the control system drives the electrically controlled lifting and translational feeding device 5 to reset the electrically controlled lifting machine 19, lower the top support frame 20 to the initial position, and at the same time drive the bottom electric drive wheel group 17 to reverse, driving the electrically controlled lifting and translational feeding device 5 back to the loading end, preparing for the loading and feeding of the next panel, thus realizing large-scale cyclic production.

[0037] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production, comprising a horizontal processing frame (1) and side guide plates (2) installed on both sides of the upper end of the horizontal processing frame (1), characterized in that: The side guide plate (2) is equipped with a built-in electronically controlled forming wheel assembly (3) and an external electronically controlled forming wheel assembly (4) on both sides. The loading end inside the horizontal processing frame (1) is equipped with several electronically controlled lifting and translation feeding devices (5). An external monitoring cover (6) with a built-in AI optical recognition lens (7) is fixedly installed on the horizontal processing frame (1) around the electronically controlled lifting and translation feeding device (5).

2. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 1, characterized in that: The side guide plate (2) is fitted with several embedded guide rails (8), and the embedded guide rails (8) are rotatably fitted with longitudinally placed electric control screws (9). The longitudinally placed electric control screws (9) are in transmission cooperation with the built-in electric control forming wheel set (3) and the external electric control forming wheel set (4).

3. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 2, characterized in that: The built-in electronically controlled forming wheel assembly (3) includes an inner mounting plate (10), an internally threaded lifting seat (11) fixed as an integral structure with the inner mounting plate (10), and a lower forming wheel assembly (12) mounted on the outer mounting plate (13). The inner mounting plate (10) is threaded onto the longitudinally placed electronically controlled lead screw (9) through the internally threaded lifting seat (11) and is vertically slidably assembled along the inner side of the side guide plate (2).

4. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 2, characterized in that: The externally mounted electrically controlled forming wheel assembly (4) includes an outer mounting plate (13) that slides vertically along the outer side of the side guide plate (2), an internally threaded external lifting seat (14) that is fixed as an integral structure with the outer mounting plate (13), and an upper forming wheel assembly (15) mounted on the outer mounting plate (13). The outer mounting plate (13) is threaded onto the longitudinally mounted electrically controlled lead screw (9) through the internally threaded external lifting seat (14) and slides vertically along the outer side of the side guide plate (2).

5. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 1, characterized in that: The horizontal processing frame (1) has horizontally arranged built-in support rails (16) symmetrically fixed on the inner walls on both sides, and the electrically controlled lifting and translation feeding device (5) is horizontally slidably assembled along the built-in support rails (16).

6. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 5, characterized in that: The electrically controlled lifting and translating feeding device (5) includes a mounting base frame (18) that slides along the built-in support rail (16) via a bottom electric drive wheel set (17), an electrically controlled lifting machine (19) fixed inside the mounting base frame (18), a top support frame (20) that slides on the upper end of the mounting base frame (18), a top support wheel set (21) assembled on the upper end of the top support frame (20), and a transverse limiting support rod (22) that passes through the inside of the mounting base frame (18). The output end of the electrically controlled lifting machine (19) is connected to the top support frame (20) in a transmission connection.

7. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 1, characterized in that: The external monitoring cover (6) is fixedly mounted on the outer wall of the horizontal processing frame (1) by bolts, and the external monitoring cover (6) covers the outside of the electrically controlled lifting and translational feeding device (5) at the feeding end.

8. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 7, characterized in that: The external monitoring cover (6) has lateral assembly ports (23) on both sides and the top surface. The AI ​​optical recognition lens (7) is inserted into the lateral assembly port (23) and fixedly assembled with the external monitoring cover (6). The recognition end of the AI ​​optical recognition lens (7) faces the electrically controlled lifting and translational feeding device (5).

9. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 6, characterized in that: The upper end of the top support frame (20) is fitted with a pressure sensing module (24) at the assembly end of the top support wheel assembly (21), and the pressure sensing module (24) abuts against the assembly seat of the top support wheel assembly (21).

10. The intelligent lifting and feeding device for polyurethane sandwich panel edge banding machine production and processing according to claim 6, characterized in that: The horizontal machining frame (1) has several lateral limiting slots (25) on its inner walls along its length. The end of the transverse limiting support rod (22) is fitted into the lateral limiting slot (25) and engages with the horizontal machining frame (1).

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