Steel frame cutting device for shelf production

Abstract

The present application provides a steel frame cutting device for shelf production, which belongs to the field of shelf processing technology, including a workbench and a hydraulic cylinder vertically arranged at the right end of the workbench, the execution end of the hydraulic cylinder is provided with a lifting frame, and the lifting frame is provided with a transition frame for carrying a circular saw and a servo motor for driving the transition frame to rotate; the workbench is horizontally slidably connected to a pushing frame, and the pushing frame is horizontally slidably connected to a plurality of pushing plates that can abut against square steel pipes, a guide shaft is provided in the middle of each pushing plate, a rocker arm is hinged at the left end of the workbench, and a horizontally arranged cross bar is hinged at the front and rear ends of the rocker arm, and a ring is provided at the right ends of the two cross bars, and two columns matching the rings are symmetrically arranged on the transition frame front and back, a sleeve is sleeved on the outside of each cross bar, and a linkage frame is hinged between the two sleeves, and a guide slide is provided in the middle of the linkage frame; the present application can improve the overall efficiency of shelf production while reducing cutting loss.

Description

Technical Field

[0001] The present application relates to the technical field of shelf processing, and in particular to a steel frame cutting device for shelf production. Background Art

[0002] Shelves are support structures used to store and display items, and are widely used in industries such as warehousing, logistics, and retail. They can be designed in a variety of styles to meet different needs and usage scenarios, with a specific number of layers and structural design to facilitate the storage and retrieval of items. Shelves are typically made of metal, so metal molds are created according to design requirements, and then the materials are formed through processes such as cutting, bending, welding, and punching.

[0003] When using square steel tubes as the base material for the production of shelves, the end faces of the square steel tubes are often cut into an inclined state, and then the inclined end faces of two square steel tubes are aligned and welded together to increase the contact area between the two adjacent square steel tubes, thereby improving the firmness between the two square steel tubes and helping to enhance the overall structural stability and load-bearing capacity of the shelf.

[0004] Referring to the Chinese patent document with announcement number CN217142506U and announcement date of August 9, 2022, entitled "A Steel Frame Cutting Device for Shelf Manufacturing", when cutting long strips of steel, the end of the steel must first be placed under the circular saw. After measuring and adjusting the length of the steel to be cut, the circular saw will complete the final steel cutting work.

[0005] Referring to the above technical solution, when using a circular saw to cut the end faces of square steel pipes, it is necessary to first adjust the circular saw to a specified angle based on the placement of the square steel pipes, and then use the circular saw to directly cut the square steel pipes. In this case, due to the influence of the circular saw's cutting path, for the end face cutting work of a large number of square steel pipes neatly stacked on the workbench, the circular saw may cause some square steel pipes to be excessively cut off during a single cutting process, which can easily lead to increased losses. Therefore, in order to improve cutting accuracy while reducing cutting losses, a one-by-one cutting method is often used to complete the end face cutting of square steel pipes, but this method can easily affect the overall efficiency of shelf production. Summary of the Invention

[0006] In view of this, the present application provides a steel frame cutting device for shelf manufacturing, which is mainly used to solve the problem of large cutting loss when performing large-scale end face cutting work on square steel pipes.

[0007] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0008] By adopting the above technical solution, the workbench is used as the load-bearing component for large quantities of square steel pipes, and large quantities of square steel pipes can be cut synchronously in a single cutting stroke of the circular saw. At the same time, the parallelogram mechanism constructed by the rocker arm, the linkage frame and the two cross bars can be used as a linkage component, so that the push plate on the pusher frame can undergo appropriate lateral displacement as the transition frame rotates. In the subsequent pushing process, the multiple square steel pipes neatly stacked on the workbench are changed in position accordingly with the displacement of the pusher plate, until the end faces of the multiple square steel pipes are changed from a parallel state to a stepped state, so that the cutting amount of each square steel pipe is kept as consistent as possible, thereby reducing the material loss of the square steel pipe.

[0009] Optionally, the cross bars are all provided in the form of threaded rods, and threaded sleeves threadedly connected to the cross bars are rotatably connected inside the two sleeves, and a first motor for driving the threaded sleeves to rotate is provided on the sleeves.

[0010] By adopting the above technical solution, when the first motor drives the threaded sleeve to rotate, the sleeve can be axially displaced along the cross bar, and by utilizing the self-locking characteristics of the thread, the center point of the linkage frame can be kept stationary when the transition frame drives the two cross bars to displace, so as to prevent the linkage frame from being lateral displaced during this process and affecting the normal operation of the directional steel pipe position adjustment work.

[0011] Optionally, a limit frame is provided on the workbench, and the two cross bars both pass through a strip opening longitudinally opened in the middle of the limit frame.

[0012] By adopting the above technical solution, due to the presence of the ring and the column, and the transition frame can be vertically raised and lowered, when the limit frame is set on the side close to the transition frame, it can provide further limiting support for the cross bar, so as to prevent the right end of the cross bar of the transition frame from being effectively supported during the lifting process and causing bending and deformation.

[0013] Optionally, the pusher plate is connected to the pusher rack in a transverse sliding manner via a spacing adjustment mechanism, and the spacing adjustment mechanism is used to adjust the spacing between the multiple pusher plates.

[0014] Optionally, the spacing adjustment mechanism includes two scissor-type connecting rod assemblies longitudinally arranged on the pushing frame, and a bidirectional screw is provided inside the scissor-type connecting rod assembly for driving its own extension and retraction. Rectangular blocks are provided on the multiple intersection pins of the scissor-type connecting rod assembly, and horizontal sliding grooves matching the rectangular blocks are provided on the pushing plate.

[0015] By adopting the above technical solution and utilizing the characteristics of the scissor-type connecting rod assembly, the spacing between multiple push plates can be freely adjusted with the cooperation of the rectangular block and the transverse slide groove. At the same time, the cooperation of the rectangular block and the transverse slide groove can also enable the push plate to undergo lateral displacement while always maintaining a horizontal state.

[0016] Optionally, a clamping plate is provided on the slider at the front end and the slider at the rear end of the scissor-type connecting rod assembly, and the relative inner sides of the two clamping plates are provided with a plurality of clamping rollers capable of abutting the square steel pipe.

[0017] By adopting the above technical solution, two clamping plates are used to limit the multiple square steel pipes neatly stacked on the workbench, and clamping rollers are used instead of clamping plates to contact the square steel pipes. This can reduce the friction force on the square steel pipes while clamping and limiting all the square steel pipes, reducing the possibility of the square steel pipes becoming loose during the subsequent pushing process, so as to avoid affecting the final cutting quality.

[0018] Optionally, a flexible gasket is provided between every two transversely aligned hinge pins on the scissor-type connecting rod assembly, and multiple flexible gaskets are spaced apart from each other by multiple pusher plates.

[0019] By adopting the above technical solution and using a flexible gasket as a buffer component between two adjacent square steel tubes, the possibility of the two square steel tubes being damaged by friction with each other during the pushing process can be reduced, thereby preventing the surface quality of the square steel tubes from being affected.

[0020] Optionally, a plurality of guide rollers for supporting square steel pipes are longitudinally arranged on the workbench.

[0021] By adopting the above technical solution, during the pushing process of the square steel pipe, the friction resistance of the square steel pipe can be reduced through the cooperation of the guide roller, which is conducive to the pushing work.

[0022] Optionally, a holding assembly is provided at the right end of the workbench for holding and limiting the square steel pipe during the cutting process.

[0023] Optionally, the pressing assembly includes a pressing frame arranged at the right end of the workbench, and the pressing frame is located on the left side of the circular saw. A cylinder is provided on the pressing frame, and a pressing plate capable of pressing the square steel pipe is provided at the execution end of the cylinder.

[0024] By adopting the above technical solution, when the square steel pipe reaches the bottom cutting station, the square steel pipe can be pressed and limited through the cooperation of the cylinder and the holding plate, so that the square steel pipe remains stable during the cutting work, reducing the possibility of position deviation of the square steel pipe, thereby ensuring stable cutting work.

[0025] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0026] 1. When performing end face cutting on large quantities of square steel pipes, the stacking state of the square steel pipes is adjusted by constructing a parallelogram mechanism. The cutting amount of each square steel pipe is kept as consistent as possible based on the rotation angle of the circular saw. This achieves synchronous cutting of large quantities of square steel pipes while reducing material loss, thereby improving the overall efficiency of shelf production.

[0027] 2. During the pushing process, the distance between the pushing plates can be adjusted according to the size of the square steel pipe to meet the use requirements of square steel pipes of different sizes. At the same time, the square steel pipe can be limited and protected during the pushing process to prevent the square steel pipe from becoming loose or scratched when the pushing plate pushes the square steel pipe to move.

[0028] 3. After the square steel pipe arrives at the cutting station, it can be fixed by means of pressure holding and limiting, reducing the possibility of displacement and dislocation of the steel pipe during the cutting process, so that subsequent cutting work can be carried out stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a steel frame cutting device for shelf manufacturing in this application;

[0030] Figure 2 This is a schematic diagram of the structure of the lifting frame and transition frame for this application;

[0031] Figure 3 This is a schematic diagram of the structure of the pusher rack and the swing arm of this application;

[0032] Figure 4 This is the structural diagram of the push plate and linkage frame for this application Figure 1 ;

[0033] Figure 5 This is the structural diagram of the push plate and linkage frame for this application Figure 2 ;

[0034] Figure 6 This is a cross-sectional view of the pusher plate of this application;

[0035] Figure 7 A cross-sectional view of the sleeve of this application;

[0036] Figure 8 This is a schematic structural diagram of the pressing component of this application.

[0037] Explanation of the accompanying drawings: 1. Workbench; 11. Hydraulic cylinder; 12. Lifting frame; 13. Transition frame; 14. Circular saw; 15. Servo motor; 2. Pushing frame; 21. Pushing plate; 22. Guide shaft; 3. Rocker arm; 31. Cross bar; 32. Ring; 33. Column; 34. Sleeve; 341. Threaded sleeve; 342. First motor; 35. Linkage frame; 36. Guide slide; 4. Limit frame; 5. Spacing adjustment mechanism; 51. Scissor-type connecting rod assembly; 52. Bidirectional screw; 53. Rectangular block; 54. Horizontal slide; 55. Clamping plate; 56. Clamping roller; 57. Flexible gasket; 6. Guide roller; 7. Pressing assembly; 71. Pressing frame; 72. Cylinder; 73. Pressing plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application Figures 1-8 , the technical solutions of the embodiments of the present application are clearly and completely described. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of this application.

[0039] Reference Figure 1 and Figure 2 This embodiment provides a steel frame cutting device for shelf manufacturing, comprising a workbench 1, a hydraulic cylinder 11, a lifting frame 12, a transition frame 13, a circular saw 14, a servo motor 15, a square steel pipe adjustment mechanism, and a loading mechanism. The hydraulic cylinder 11 is vertically mounted at the right end of the workbench 1, the lifting frame 12 is located at the actuator end of the hydraulic cylinder 11, the transition frame 13 is rotatably connected to the lifting frame 12, the circular saw 14 is mounted on the transition frame 13, and the servo motor 15 is mounted on the lifting frame 12 and is capable of driving the transition frame 13 to rotate.

[0040] Among them, reference Figure 1 、 Figure 2 and Figure 3 The square steel pipe adjustment mechanism includes a pusher frame 2, a pusher plate 21 and a linkage. The pusher frame 2 is connected to the workbench 1 in a transverse sliding manner. The pusher plate 21 is provided with multiple pushers and is connected to the pusher frame 2 in a transverse sliding manner. The linkage includes multiple guide shafts 22, a rocker 3, two crossbars 31, two collars 32, two columns 33, two sleeves 34, a linkage frame 35 and a guide slide 36 (refer to Figure 4 and Figure 5), multiple guide shafts 22 are respectively arranged in the middle of each push plate 21, the rocker 3 is hinged at the left end of the workbench 1, two cross bars 31 are horizontally hinged at the front and rear ends of the rocker 3, two collars 32 are respectively arranged at the right ends of the two cross bars 31, two columns 33 are symmetrically arranged on the transition frame 13, and the collars 32 can be mounted on the outside of the columns 33, and two sleeves 34 are respectively mounted on the outside of the two cross bars 31 and can slide axially along the cross bars 31, a linkage frame 35 is horizontally hinged between the two sleeves 34, and the midpoint of the linkage frame 35 is rotatably connected to the midpoint of the pusher frame 2, and a guide slide 36 is opened in the middle of the linkage frame 35 and can be inserted into the guide shaft 22. The rocker 3, the linkage frame 35 and the two cross bars 31 can form a parallelogram mechanism, so that the linkage frame 35 always remains parallel to the rocker 3, and through the cooperation of the collars 32 and the columns 33, the transition frame 13 will also always remain parallel to the linkage frame 35 and the rocker 3.

[0041] Among them, reference Figure 3 and Figure 7 The loading mechanism includes two threaded sleeves 341 and two first motors 342. The two threaded sleeves 341 are rotatably connected to the interiors of the two sleeves 34. The threaded sleeves 341 can be threadedly connected to the crossbar 31, which is arranged in the form of a threaded rod. The two first motors 342 are respectively installed on the two sleeves 34 and can drive the threaded sleeves 341 to rotate through a gear transmission. When the first motors 342 drive the threaded sleeves 341 to rotate, the sleeves 34 will axially displace along the crossbar 31, thereby causing the linkage frame 35, the pusher frame 2, and the pusher plate 21 to move together, pushing the square steel pipe to the right to complete the loading.

[0042] When carrying out the cutting work of square steel pipes, the square steel pipes are first neatly stacked on the workbench 1, and then, through the cooperation of the loading mechanism, all the push plates 21 are moved together to push the neatly stacked square steel pipes to the right under the circular saw 14, and then, with the cooperation of the hydraulic cylinder 11, the lifting frame 12, the transition frame 13 and the circular saw 14 are moved down together to perform conventional transverse cutting work on all the square steel pipes. In addition, when it is necessary to perform end face cutting on the square steel pipe, the servo motor 15 drives the transition frame 13 to rotate, causing the circular saw 14 to change its angle. At this time, due to the influence of the parallelogram mechanism composed of the rocker arm 3, the linkage frame 35 and the two cross bars 31, and the cooperation of the collar 32 and the column 33, the transition frame 13 can always remain parallel to the linkage frame 35 and the rocker arm 3. In this case, the linkage frame 35 will also rotate the same angle as the transition frame 13, and the guide shaft 22 will undergo relative displacement inside the guide slide 36 and prompt the push plate 21 to undergo lateral displacement based on the push frame 2. When the push plate 21 performs subsequent pushing work on the square steel pipe, the end faces of multiple square steel pipes neatly stacked on the workbench 1 will change from a parallel state to a stepped state. During a single cutting process of the circular saw 14, the cutting amount of each square steel pipe is kept as consistent as possible, thereby improving the cutting efficiency while reducing material loss.

[0043] Reference Figure 1 A limit frame 4 is provided on the workbench 1 , and the two cross bars 31 both pass through a strip opening longitudinally opened in the middle of the limit frame 4 .

[0044] The limiting frame 4 can provide further limiting support for the cross bar 31 on the side close to the transition frame 13, reducing the possibility of the cross bar 31 bending up and down due to the relative displacement of the ring 32 and the column 33.

[0045] Reference Figure 3 、 Figure 4 and Figure 6 The pusher plate 21 is connected to the pusher frame 2 by a spacing adjustment mechanism 5 that slides horizontally. The spacing adjustment mechanism 5 is used to adjust the spacing between multiple pusher plates 21. The spacing adjustment mechanism 5 includes two scissor-type connecting rod assemblies 51, multiple rectangular blocks 53, and multiple transverse chutes 54. The two scissor-type connecting rod assemblies 51 are longitudinally arranged on the pusher frame 2, and the scissor-type connecting rod assemblies 51 are each provided with a bidirectional screw 52 for driving their own extension and retraction. Rectangular blocks 53 are provided on the multiple intersection pins of the scissor-type connecting rod assemblies 51, and each pusher plate 21 is provided with a transverse chute 54 for inserting the rectangular block 53. The rectangular blocks 53 and the transverse chute 54 cooperate to enable the pusher plate 21 to undergo transverse displacement based on the pusher frame 2 while maintaining a horizontal position.

[0046] When the bidirectional screw 52 rotates to drive the scissors-type connecting rod assembly 51 to extend, the rectangular block 53 located on the pin shaft at the middle intersection of the scissors-type connecting rod assembly 51 will remain stationary, while the other rectangular blocks 53 will gradually move away from the middle rectangular block 53, so that the spacing between the multiple push plates 21 gradually increases, so as to be suitable for square steel pipes of different sizes.

[0047] Among them, reference Figure 3 A clamping plate 55 is provided on the slider at the front end and the slider at the rear end of the scissor-type connecting rod assembly 51, and the relative inner sides of the two clamping plates 55 are provided with a plurality of clamping rollers 56 that can abut against the square steel pipe.

[0048] When multiple neatly stacked square steel tubes are placed between the two clamping plates 55, the clamping rollers 56 on the two clamping plates 55 can respectively abut the frontmost square steel tube and the rearmost square steel tube, so that the frontmost square steel tube and the rearmost square steel tube are subjected to the extrusion force approaching each other, thereby clamping and limiting all the square steel tubes to prevent the square steel tubes from loosening during the subsequent pushing process and affecting the final cutting quality.

[0049] Among them, reference Figure 3 A flexible gasket 57 is provided between each two transversely aligned hinge pins on the scissor-type connecting rod assembly 51, and multiple flexible gaskets 57 are spaced apart from multiple pusher plates 21 one by one.

[0050] When the flexible gasket 57 and the square steel tube are spaced apart in a one-to-one manner in the longitudinal direction, the probability of excessive friction and damage between the multiple square steel tubes can be reduced during the subsequent pushing process.

[0051] Reference Figure 1 and Figure 3 A plurality of guide rollers 6 for supporting square steel pipes are longitudinally arranged on the workbench 1.

[0052] During the pushing process of the square steel pipe, the guide roller 6 can provide support for the square steel pipe from the bottom, and at the same time can further reduce the friction force exerted on the square steel pipe during the pushing process.

[0053] Reference Figure 2 and Figure 8 A holding assembly 7 is provided at the right end of the workbench 1 to hold the square steel pipe in place during the cutting process. The holding assembly 7 comprises a holding frame 71, a cylinder 72, and a holding plate 73. The holding frame 71 is provided at the right end of the workbench 1 and to the left of the circular saw 14. The cylinder 72 is provided on the holding frame 71. The holding plate 73 is provided at the actuating end of the cylinder 72 and is capable of pressing the square steel pipe.

[0054] When the square steel pipe is pushed to the cutting station, the cylinder 72 drives the holding plate 73 to move downward, so that the holding plate 73 presses the square steel pipe, which can reduce the probability of the steel pipe being offset and misaligned during the cutting process, thereby ensuring the final cutting quality.

[0055] The implementation principle of a steel frame cutting device for shelf manufacturing in the embodiment of the present application is as follows:

[0056] When carrying out the cutting work of square steel pipes, the square steel pipes are first neatly stacked on the workbench 1, and then the first motor 342 runs and drives the threaded sleeve 341 to rotate. At this time, the sleeve 34 will be axially displaced along the cross bar 31, so that the linkage frame 35, the pushing frame 2 and all the pushing plates 21 are displaced together, so that the neatly stacked square steel pipes are pushed to the right to the bottom of the circular saw 14, and then the lifting frame 12, the transition frame 13 and the circular saw 14 are moved down together with the cooperation of the hydraulic cylinder 11, so that all the square steel pipes can be subjected to conventional transverse cutting work. When the square steel pipes are pushed to the cutting station, the cylinder 72 runs to drive the holding plate 73 to move down, so that the holding plate 73 presses the square steel pipe, which can reduce the probability of directional displacement of the steel pipe during the cutting process, thereby ensuring the final cutting quality.

[0057] In addition, when it is necessary to perform end face cutting on the square steel pipe, the servo motor 15 drives the transition frame 13 to rotate, causing the circular saw 14 to change its angle. At this time, due to the influence of the parallelogram mechanism composed of the rocker arm 3, the linkage frame 35 and the two cross bars 31, and the cooperation of the collar 32 and the column 33, the transition frame 13 can always remain parallel to the linkage frame 35 and the rocker arm 3. In this case, the linkage frame 35 will also rotate the same angle as the transition frame 13, and the guide shaft 22 will undergo relative displacement inside the guide slide 36 and prompt the push plate 21 to undergo lateral displacement based on the push frame 2. When the push plate 21 performs subsequent pushing work on the square steel pipe, the end faces of multiple square steel pipes neatly stacked on the workbench 1 will change from a parallel state to a stepped state. During a single cutting process of the circular saw 14, the cutting amount of each square steel pipe is kept as consistent as possible, thereby improving the cutting efficiency while reducing material loss.

[0058] When the bidirectional screw 52 rotates to drive the scissors-type connecting rod assembly 51 to extend, the rectangular block 53 located on the pin shaft at the middle intersection of the scissors-type connecting rod assembly 51 will remain stationary, while the other rectangular blocks 53 will gradually move away from the middle rectangular block 53, so that the spacing between the multiple push plates 21 gradually increases, so as to be suitable for square steel pipes of different sizes.

[0059] When multiple neatly stacked square steel tubes are placed between the two clamping plates 55, the clamping rollers 56 on the two clamping plates 55 can respectively abut the frontmost square steel tube and the rearmost square steel tube, so that the frontmost square steel tube and the rearmost square steel tube are subjected to the extrusion force approaching each other, thereby clamping and limiting all the square steel tubes to prevent the square steel tubes from loosening during the subsequent pushing process and affecting the final cutting quality. During this process, the flexible gasket 57 can be separated from the square steel tubes in a one-to-one manner in the longitudinal direction, reducing the probability of damage caused by excessive friction between multiple square steel tubes.

[0060] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A steel frame cutting device for shelf manufacturing, comprising a workbench (1) and a hydraulic cylinder (11) vertically arranged at its right end, a lifting frame (12) being provided at the execution end of the hydraulic cylinder (11), and a transition frame (13) for carrying a circular saw (14) and a servo motor (15) for driving the transition frame (13) to rotate being provided on the lifting frame (12), characterized in that: The workbench (1) is laterally slidably connected to a pusher rack (2), and the pusher rack (2) is laterally slidably connected to a plurality of pusher plates (21) capable of abutting against a plurality of square steel pipes, and a guide shaft (22) is provided in the middle of each pusher plate (21). The left end of the workbench (1) is hinged with a rocker rod (3), and the front and rear ends of the rocker rod (3) are hinged with a horizontally arranged cross bar (31), and the right ends of the two cross bars (31) are provided with a collar (32). Two columns (33) matching the collar (32) are symmetrically provided on the transition rack (13), and each cross bar (31) is provided with a sleeve (34) capable of sliding axially along the cross bar (31) on the outside, and a linkage rack (35) rotatably connected to the pusher rack (2) is hinged between the two sleeves (34), and a guide slot (36) for inserting the guide shaft (22) is provided in the middle of the linkage rack (35) along its own axial direction.

2. A steel frame cutting device for shelf manufacturing according to claim 1, characterized in that: The cross bars (31) are each provided in the form of a threaded rod, and the two sleeves (34) are each rotatably connected to a threaded sleeve (341) threadedly connected to the cross bars (31). The sleeves (34) are each provided with a first motor (342) for driving the threaded sleeve (341) to rotate.

3. The steel frame cutting device for shelf manufacturing according to claim 1, characterized in that: A limit frame (4) is provided on the workbench (1), and the two cross bars (31) both pass through a strip opening longitudinally opened in the middle of the limit frame (4).

4. The steel frame cutting device for shelf manufacturing according to claim 1, characterized in that: The pusher plates (21) are connected to the pusher frame (2) in a transverse sliding manner via a spacing adjustment mechanism (5), and the spacing adjustment mechanism (5) is used to adjust the spacing between the plurality of pusher plates (21).

5. The steel frame cutting device for shelf manufacturing according to claim 4, characterized in that: The spacing adjustment mechanism (5) includes two scissor-type connecting rod assemblies (51) longitudinally arranged on the pusher frame (2), and a bidirectional screw (52) for driving the scissor-type connecting rod assembly (51) is provided inside the scissor-type connecting rod assembly (51) for driving the extension and retraction thereof, and rectangular blocks (53) are provided on the pins at multiple intersections of the scissor-type connecting rod assembly (51), and transverse sliding grooves (54) matching the rectangular blocks (53) are provided on the pusher plate (21).

6. The steel frame cutting device for shelf manufacturing according to claim 5, characterized in that: A clamping plate (55) is provided on the slider at the front end and the slider at the rear end of the scissor-type connecting rod assembly (51), and a plurality of clamping rollers (56) capable of abutting against the square steel pipe are provided on the opposite inner side surfaces of the two clamping plates (55).

7. The steel frame cutting device for shelf manufacturing according to claim 5, characterized in that: A flexible gasket (57) is provided between each two laterally aligned hinge pins on the scissor-type connecting rod assembly (51), and a plurality of flexible gaskets (57) and a plurality of pusher plates (21) are spaced one by one.

8. The steel frame cutting device for shelf manufacturing according to claim 1, characterized in that: A plurality of guide rollers (6) for supporting square steel pipes are longitudinally arranged on the workbench (1).

9. The steel frame cutting device for shelf manufacturing according to claim 1, characterized in that: A pressing assembly (7) is provided at the right end of the workbench (1) for pressing and limiting the square steel pipe during the cutting process.

10. The steel frame cutting device for shelf manufacturing according to claim 9, characterized in that: The pressing assembly (7) includes a pressing frame (71) provided at the right end of the workbench (1), and the pressing frame (71) is located on the left side of the circular saw (14). A cylinder (72) is provided on the pressing frame (71), and a pressing plate (73) capable of pressing the square steel pipe is provided at the execution end of the cylinder (72).

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