A cutting device for perforated bricks and a method of using the same

Abstract

The present application relates to the technical field of porous brick production equipment, in particular to a cutting device for porous bricks and a use method thereof, comprising an inverted U-shaped support plate, two side plates symmetrically fixed on both sides of the inverted U-shaped support plate. The cutting device for porous bricks is linked and matched by a cutting steel wire, a damping spring telescopic pipe, an extrusion rod, a first spring telescopic plate and a second spring telescopic plate, can automatically identify the material sticking state of the steel wire through the change of the cutting resistance: when the cutting resistance exceeds the standard due to the material sticking of the steel wire at the working position, the pulling force of the steel wire will automatically trigger the telescopic plate unlocking mechanism, without additional setting of electric control elements such as sensors and controllers, the pure mechanical trigger logic is fully adapted to the harsh production environment of the brick factory with high dust and high humidity, and the failure rate is low and the response is accurate.

Description

Technical Field

[0001] This invention relates to the technical field of porous brick production equipment, specifically to the category of new wall material forming and processing equipment, and particularly to a cutting device for fixed-length cutting of porous brick wet blanks. Background Technology

[0002] Porous bricks are a new type of green wall material made from clay, shale, coal gangue, fly ash and other main raw materials through extrusion molding and firing. They have core advantages such as light weight, excellent thermal insulation performance, soil saving and waste utilization, and convenient construction. They are building energy-saving materials that are vigorously promoted by the state and are widely used in load-bearing and non-load-bearing wall structures of industrial and civil buildings.

[0003] In the industrial continuous production process of porous bricks, fixed-length cutting of wet blanks is a core process that determines the dimensional accuracy, appearance quality, and structural performance of the finished product. Freshly extruded porous brick wet blanks have low strength and high plasticity. The industry generally uses cutting wire as the cutting actuator. The fixed-length division of the continuously extruded blank is completed by the linear feeding of the wire. This method causes less extrusion damage to the blank and has a good cutting surface shaping effect, which is suitable for the cutting characteristics of porous brick blanks with pores.

[0004] However, in long-term industrial production practice, existing wire cutting devices have revealed the following prominent technical defects:

[0005] Material adhering to the cutting wire directly degrades cutting quality and finished product performance: During continuous cutting of wet blanks, the cutting wire continuously adheres to the surface of the blank, causing the effective diameter of the wire to gradually increase and the cutting resistance to rise simultaneously. On the one hand, the thicker wire exerts stronger pressure on the cut surface of the blank, resulting in appearance defects such as rough cut surfaces, burrs, and out-of-tolerance dimensional accuracy. On the other hand, during the cutting process, the wire forcibly presses the adhered material into the pre-formed pores of the porous brick, causing pore blockage and pore deformation, directly damaging the thermal insulation performance and structural strength of the finished brick, and significantly increasing the product defect rate.

[0006] Material adhesion issues disrupt production and pose significant challenges to efficiency and cost control: Current production methods for dealing with material adhesion to steel wires often involve stopping the machine for manual cleaning or replacing the wires. This not only severely disrupts production continuity and significantly reduces the efficiency of a single production line, but also increases labor costs and steel wire consumables. Some cutting devices equipped with online cleaning functions require the cleaning operation to be carried out simultaneously at the cutting station. The cleaning action can easily interfere with the cutting process and cannot thoroughly remove the embedded mud from the surface of the steel wire, making it difficult to achieve the cleaning effect required for production. Summary of the Invention

[0007] The purpose of this invention is to provide a cutting device for porous bricks and a method for using the same, in order to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a cutting device for porous bricks, comprising an inverted U-shaped support plate and two side plates symmetrically fixed to both sides of the inverted U-shaped support plate;

[0008] Each of the two side plates has a central groove, a guide groove, and a bending groove on its opposite sides. Each of the two side plates has a limit slide rail fixed on its opposite sides. A slide plate is vertically slidably connected to the limit slide rail. A vertical groove roller that rolls in the guide groove is rotatably connected to the slide plate. An L-shaped plate is slidably connected to the slide plate. An auxiliary roller that rolls in the bending groove is rotatably connected to the L-shaped plate. The auxiliary roller is used to drive the L-shaped plate to move laterally when it moves vertically, so as to prevent the upper and lower sets of L-shaped plates from interfering with each other.

[0009] The side plate is provided with multiple guide rollers, and an inverted U-shaped transmission belt is wound around the outside of all guide rollers. A connecting plate is fixed inside the transmission belt. The connecting plate is rotatably connected to the end face of the corresponding vertical groove roller, which is used to drive the upper and lower sets of L-shaped plates to move synchronously in opposite directions, so as to realize the switching of cutting positions.

[0010] Preferably, a cutting wire is installed between two L-shaped plates at the same height, and a pressing rod is fixed at both ends of the cutting wire. A damping spring telescopic tube is provided between the pressing rod and the L-shaped plate and sleeved on the outside of the cutting wire.

[0011] A first spring telescopic plate is fixed on the L-shaped plate, and a second spring telescopic plate is fixed on the side plate. The second spring telescopic plate has a U-shaped groove for the extrusion rod to move in and extrude and contract. The second spring telescopic plate can abut against the first spring telescopic plate and be limited. It is used to trigger the release of the limitation on the first spring telescopic plate by the change in the cutting resistance of the cutting wire.

[0012] A spring telescopic rod is vertically fixed on the inverted U-shaped support plate. A locking plate is fixed at the lower end of the spring telescopic rod. The locking plate can abut against the first spring telescopic plate to limit the retraction of the spring telescopic rod.

[0013] Preferably, the bent through groove is a C-shaped groove, and the horizontal distance between the lower end of the bent through groove and the guide through groove is smaller than the horizontal distance between the upper end of the bent through groove and the guide through groove; there are two guide through grooves on the same side plate, symmetrically distributed on both sides of the central groove, and there are two bent through grooves on the same side plate, symmetrically distributed on the outer sides of the two guide through grooves; there are two limiting slide rails on the same side plate, and the slide plates on the two limiting slide rails are staggered.

[0014] Preferably, each side plate has six guide rollers arranged in an inverted U-shape. The transmission belt is tensioned and wound around the outside of the six guide rollers. Two vertically spaced connecting plates are fixed on the inner side of the transmission belt. The two connecting plates are rotatably connected to the vertical groove rollers on the two sliding groove plates on the same side.

[0015] Preferably, two auxiliary wheels are installed on the side of the L-shaped plate facing the cutting wire, and the cutting wire overlaps the two auxiliary wheels; the end of the damping spring telescopic tube away from the extrusion rod is fixedly inserted into the L-shaped plate.

[0016] Preferably, a cleaning device is fixed between the two side plates, and the cutting wire on the upper side can move with the L-shaped plate into the cleaning device. The cleaning device includes a telescopic cylinder and a scraper fixed to the output end of the telescopic cylinder. The scraper is arranged corresponding to the surface of the cutting wire.

[0017] Preferably, the outer sleeve of the spring telescopic rod has a vertical guide groove, the inner rod of the spring telescopic rod is fixed with a push block that slides in the guide groove, and the outer sleeve of the spring telescopic rod is also fixed with an electric telescopic rod, the output end of which is correspondingly set with the push block.

[0018] Preferably, the outer side of the outer sleeve of the first spring telescopic plate is provided with a cut surface, and the telescopic end of the first spring telescopic plate is provided with an inclined surface.

[0019] A method of using a cutting device for porous bricks includes the following steps:

[0020] S1. In the initial state, the lower L-shaped plate and cutting wire are in the cutting position, and the upper L-shaped plate and cutting wire are in the waiting position; the second spring telescopic plate abuts against the first spring telescopic plate, forming a vertical limit on the L-shaped plate; the spring telescopic rod on the inverted U-shaped support plate is in the extended state, and its lower end locking plate abuts against the lower side of the inner plate of the first spring telescopic plate in the cutting position, restricting the spring telescopic rod from retracting, forming a double limit;

[0021] The damping spring telescopic tube provides constant tension to the cutting wire, and the external robotic arm drives the inverted U-shaped support plate to move down, so that the porous brick wet blank can be cut to a fixed length by cutting the cutting wire.

[0022] S2. Automatic unlocking principle when material adhesion exceeds the limit: When material adhesion on the surface of the cutting wire causes the cutting resistance to increase, the wire is subjected to the reaction force of the blank to overcome the pre-tightening force of the damping spring telescopic tube, and pulls the extrusion rod into the U-shaped groove of the second spring telescopic plate, and the extrusion causes the inner plate of the second spring telescopic plate to contract.

[0023] When the extrusion rod moves to the deepest corner of the U-shaped groove, the inner plate of the second spring telescopic plate moves to the cut surface of the outer plate of the first spring telescopic plate and loses its limiting ability; after the cutting is completed, the steel wire loses its force, the damping spring telescopic tube resets and pushes the extrusion rod out of the U-shaped groove, the second spring telescopic plate completely disengages from the first spring telescopic plate, and the automatic unlocking is completed;

[0024] S3, Dual-station synchronous switching and interference-free avoidance principle; After the L-shaped plate is unlocked, the contraction force of the spring telescopic rod drives the L-shaped plate of the cutting station to move upward along the limit slide rail through the locking plate, and drives the inverted U-shaped transmission belt to rotate along the guide roller through the vertical groove roller and the connecting plate, synchronously driving the L-shaped plate of the waiting station to move downward, realizing the synchronous reverse exchange of the two sets of cutting wires;

[0025] During the repositioning process, the auxiliary rollers on the L-shaped plate roll along the C-shaped bend through groove, driving the L-shaped plate to move laterally in the middle of the stroke to avoid interference between the upper and lower L-shaped plates; the vertical groove rollers roll along the guide through groove to provide precise guidance for vertical movement.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] This invention features an automatic workstation switching mechanism triggered by material adhesion, enabling continuous production without downtime. Through the coordinated operation of the cutting wire, damping spring telescopic tube, extrusion rod, and the first and second spring telescopic plates, the invention automatically identifies the material adhesion status of the wire based on changes in cutting resistance. When material adhesion causes excessive cutting resistance at the workstation, the wire's tension automatically triggers the telescopic plate unlocking mechanism. No additional sensors, controllers, or other electrical components are required; the purely mechanical triggering logic is perfectly suited to the harsh production environment of brick factories with high dust and humidity, resulting in a low failure rate and precise response. Simultaneously, it automatically switches between the two sets of cutting wires, removing the adhesive wire from the cutting station and moving the clean wire into the cutting station. The entire process requires no downtime or manual intervention, significantly improving the continuity and single-line production efficiency of porous bricks.

[0028] This invention features an integrated tensioning structure that balances cutting precision and operational safety. By using a damping spring telescopic tube fitted over the cutting wire, it achieves an integrated design of three main functions: tensioning, buffering, and triggering. Firstly, it provides continuous and stable tension to the cutting wire, ensuring its straightness during cutting and preventing roughness and dimensional deviations caused by bending or shifting, significantly improving cutting precision and surface quality. Secondly, it provides elastic buffering during sudden changes in cutting resistance, effectively reducing the risk of wire breakage and extending consumable lifespan. Thirdly, its own telescopic deformation, in conjunction with the extrusion rod, triggers and unlocks the material adhesion state, resulting in a compact structure and reliable operational logic.

[0029] This invention features a trajectory-guided avoidance design that enables interference-free synchronous repositioning. Through the coordination of guide slots, C-shaped bending slots, sliding plates, vertical rollers, and auxiliary rollers, the L-shaped plates are guided laterally to avoid interference during the repositioning process of the upper and lower sets of L-shaped plates driving the cutting wire. This completely solves the interference and jamming problems when the upper and lower sets of cutting components move towards each other, ensuring smooth repositioning throughout the entire process. Simultaneously, the linkage structure of the inverted U-shaped transmission belt, guide rollers, and connecting plates achieves completely synchronous movement of the two L-shaped plates, ensuring that the displacement and speed at both ends of the cutting wire are completely consistent, avoiding problems such as wire skewing and uneven tension. The high positioning accuracy of the wire after repositioning provides a stable foundation for subsequent continuous cutting operations.

[0030] This invention features a separate online cleaning system that reduces costs, increases efficiency, and simultaneously improves the finished product qualification rate. An independent cleaning device is installed between two sets of side plates. The cutting wires with material adhering to them automatically enter the cleaning device after being moved by the L-shaped plate. A telescopic cylinder drives a scraper to thoroughly clean the surface of the wires. The cleaning and cutting operations are completely separated, without interference, resulting in a cleaning effect far superior to synchronous cleaning solutions at workstations. The cleaned wires can be reused, significantly reducing the frequency of wire replacement, lowering material consumption and labor maintenance costs. Simultaneously, it ensures that the wires used in each cutting operation are clean, fundamentally preventing material adhering to the wires from causing pore blockage in the brick body and deteriorating the cut surface quality, thus significantly improving the qualification rate of porous bricks.

[0031] This invention features an automatic locking and limiting structure that ensures stable and precise cutting operations. Through the cooperation of a spring telescopic rod, a locking plate, and an electric telescopic rod, the invention automatically locks and limits the L-shaped plate at the cutting station after the wire cutting station is switched. This prevents wire displacement caused by the L-shaped plate shifting during cutting, ensuring the positional stability of the wire and further improving the repeatability of cutting dimensions. Simultaneously, the locking and unlocking actions are automatically completed with the switching process, requiring no manual operation and fully adapting to the process requirements of automated continuous production of porous bricks. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the side plate and L-shaped plate of the present invention in a separated state;

[0034] Figure 3 This is a three-dimensional structural diagram of the slide plate and vertical groove roller of the present invention;

[0035] Figure 4 This is a three-dimensional structural diagram of the bent through groove and the limiting slide rail of the present invention;

[0036] Figure 5 This is a three-dimensional structural diagram of the transmission belt and connecting plate of the present invention;

[0037] Figure 6 This is a three-dimensional structural diagram of the pusher block and the electric telescopic rod of the present invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point A in the middle;

[0039] Figure 8 This is a three-dimensional structural diagram of the extrusion rod and the damping spring telescopic tube of the present invention;

[0040] Figure 9 This is a three-dimensional structural diagram of the first spring telescopic plate and the second spring telescopic plate of the present invention;

[0041] Figure 10 This is a three-dimensional structural diagram of the second spring telescopic plate and the U-shaped groove of the present invention.

[0042] In the diagram: 1. Inverted U-shaped support plate; 2. Side plate; 21. Central groove; 22. Guide groove; 23. Bending groove; 24. Limiting slide rail; 25. Slide plate; 26. Vertical groove roller; 27. L-shaped plate; 28. Auxiliary roller; 29. ​​Guide roller; 210. Transmission belt; 211. Connecting plate; 3. Cutting wire; 31. Extrusion rod; 32. Damping spring telescopic tube; 33. First spring telescopic plate; 34. Second spring telescopic plate; 35. U-shaped groove; 4. Spring telescopic rod; 41. Locking plate; 42. Push block; 43. Electric telescopic rod; 5. Auxiliary wheel; 6. Cleaning device. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1 to 10 The present invention provides a technical solution: a cutting device for porous bricks, including an inverted U-shaped support plate 1, with side plates 2 fixedly connected to both sides of the inverted U-shaped support plate 1, and a central groove 21 opened in the middle of the opposite side of the two side plates 2.

[0045] Two guide slots 22 and two bent slots 23 are provided on each of the two side plates 2 on opposite sides. The two guide slots 22 on the same side plate 2 are respectively distributed on both sides of the central slot 21, and the two bent slots 23 on the same side plate 2 are symmetrically distributed on both sides of the two guide slots 22.

[0046] Two limiting slide rails 24 are fixedly connected to the opposite side of the two side plates 2. A sliding groove plate 25 is vertically slidably connected to the limiting slide rail 24. The two sliding groove plates 25 on the same side plate 2 are staggered. A vertical groove roller 26 is rotatably connected to the sliding groove plate 25. The vertical groove roller 26 is rolled in the guide groove 22.

[0047] An L-shaped plate 27 is slidably connected to the surface of the slide plate 25. An auxiliary roller 28 is rotatably connected to the L-shaped plate 27. The auxiliary roller 28 passes through the inner side of the slide plate 25 and is rolled in the bent through groove 23.

[0048] Six guide rollers 29 are installed on each of the two side plates 2 on opposite sides. The six guide rollers 29 on the same side are connected by a transmission belt 210. The transmission belt 210 is in the shape of an inverted U. Two connecting plates 211 are fixedly connected to the inner side of the transmission belt 210, and the two connecting plates 211 are rotatably connected to the end face of their corresponding vertical groove rollers 26.

[0049] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, two L-shaped plates 27 at the same height are equipped with cutting wires 3 at their ends. The two ends of the cutting wires 3 pass through the opposite sides of the two L-shaped plates 27 at the same height and are fixedly connected to the pressing rods 31. A damping spring telescopic tube 32 is fixedly connected to the pressing rod 31. The damping spring telescopic tube 32 is sleeved on the cutting wires 3, and the end of the damping spring telescopic tube 32 away from the pressing rod 31 is fixedly inserted into the L-shaped plate 27. The damping spring telescopic tube 32 is used to tension the cutting wires 3.

[0050] Two L-shaped plates 27 are fixedly connected to opposite sides with a first spring telescopic plate 33. The outer side of the outer plate of the first spring telescopic plate 33 is provided with a cut surface. The telescopic end of the first spring telescopic plate 33 is a bevel. The outer plate of the first spring telescopic plate 33 abuts against a second spring telescopic plate 34, and the second spring telescopic plate 34 is fixed on the side plate 2. A U-shaped groove 35 is provided on the inner plate of the second spring telescopic plate 34. The extrusion rod 31 can move into the U-shaped groove 35 and extrude the inner plate of the second spring telescopic plate 34 to contract.

[0051] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, a spring telescopic rod 4 is fixedly passed through the horizontal plate of the inverted U-shaped support plate 1. A guide groove is provided on the outer tube of the spring telescopic rod 4. A push block 42 is fixedly connected to the middle of the inner rod of the spring telescopic rod 4, and the push block 42 can slide in the guide groove. An electric telescopic rod 43 is also fixedly connected to the outer tube of the spring telescopic rod 4.

[0052] A locking plate 41 is fixedly connected to the lower end of the spring telescopic rod 4, and the locking plate 41 abuts against the lower side of the inner plate of the two lower first spring telescopic plates 33, restricting the retraction of the spring telescopic rod 4.

[0053] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, two auxiliary wheels 5 are installed on one side of the L-shaped plate 27, and the cutting wire 3 is attached to the auxiliary wheels 5.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the bent through groove 23 is C-shaped, and the distance between the lower end of the bent through groove 23 and the guide through groove 22 is less than the distance between its upper end and the guide through groove 22.

[0055] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, a cleaning device 6 is fixedly connected between the two side plates 2. The cutting wires 3 at the ends of the two upper L-shaped plates 27 are located inside the cleaning device 6. The cleaning device 6 consists of a telescopic cylinder and a scraper. The telescopic cylinder drives the scraper to move, cleaning the surface of the cutting wires 3 located inside the scraper.

[0056] The method of use and advantages of this invention: The working process of this cutting device for porous bricks is as follows:

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, when the device is in use, the external robotic arm drives the inverted U-shaped support plate 1 to move down, which in turn drives the cutting wires 3 on the two L-shaped plates 27 on the lower side to cut the produced porous brick blanks. After the cutting wires 3 cut the porous brick blanks multiple times, their surface gradually wraps around the raw material, causing its diameter to increase. This results in the cutting resistance of the cutting wires 3 on the porous brick blanks to increase, which in turn can easily cause the cut surface of the porous brick blanks to become rough, or even press the mud into the pores of the blanks, affecting the quality of the device cutting the porous brick blanks.

[0058] When a lot of blank material adheres to the surface of the cutting wire 3 on the two L-shaped plates 27 on the lower side, when it moves down again to cut the porous brick blank, the resistance encountered by the cutting wire 3 increases, and it will pull the extrusion rod 31 to the deepest corner in the U-shaped groove 35, causing the inner plate of the second spring telescopic plate 34 to move into its outer frame, and driving the damping spring telescopic tube 32 to retract at the same time.

[0059] At this time, the inner plate of the second spring telescopic plate 34 is moved to the cut surface of the outer side of the outer plate of the first spring telescopic plate 33. After the cutting wire 3 completes the cutting of the blank, the reaction force of the cutting wire 3 on the blank disappears. At this time, the damping spring telescopic tube 32 is reset and extended, pushing the extrusion rod 31 to move out from the corner of the U-shaped groove 35 along the other end of the U-shaped groove 35, thereby driving the second spring telescopic plate 34 to compress again, causing the inner plate of the second spring telescopic plate 34 to no longer apply the blocking force to the first spring telescopic plate 33.

[0060] At this time, under the action of the spring telescopic rod 4’s contraction force, the first spring telescopic plate 33 and the L-shaped plate 27 on it slowly move upward together with the locking plate 41. When the two lower L-shaped plates 27 move upward, the connecting plate 211 drives the transmission belt 210 to rotate, thereby driving the two upper L-shaped plates 27 to move downward, switching the two cutting wires 3.

[0061] Furthermore, when the two lower L-shaped plates 27 move upward, the auxiliary roller 28 slides within the sliding plate 25 and the bent through groove 23. When passing through the middle area of ​​the bent through groove 23, the auxiliary roller 28 pulls the L-shaped plate 27 to move away from the middle groove 21, thus avoiding obstruction of movement when the two upper and lower L-shaped plates 27 on the same side move towards each other, ensuring the smooth switching of the two sets of L-shaped plates.

[0062] After the two L-shaped plates 27 on the lower side have moved up, the cutting wire 3 on them moves into the cleaning device 6, and the surface of the cutting wire 3 is cleaned by the cleaning device 6.

[0063] Furthermore, during the downward movement of the two upper L-shaped plates 27, the first spring telescopic plate 33 on its inner side presses and compresses the second spring telescopic plate 34. The second spring telescopic plate 34 resets and limits the downward movement of the first spring telescopic plate 33, thus completing the replacement of the cutting wire 3 on the two upper L-shaped plates 27 with the cutting wire 3 on the two lower L-shaped plates 27.

[0064] Then, the electric telescopic rod 43 extends and pushes the push block 42 to slide in the guide groove, causing the locking plate 41 at the inner rod end of the spring telescopic rod 4 to move down and press the inclined surface at the end of the first spring telescopic plate 33, causing the first spring telescopic plate 33 to be compressed and reset, thus restricting the locking plate 41 to the lower end of the inner rod of the first spring telescopic plate 33, thereby fixing the spring telescopic rod 4 in the extended state, which is convenient for the two cutting wires 3 to be swapped again in the future.

[0065] Finally, the electric telescopic rod 43 retracts and resets, ensuring the smooth free retraction of the spring telescopic rod 4 when the positions of the two cutting wires 3 are switched.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for porous bricks, comprising an inverted U-shaped support plate (1) and two side plates (2) symmetrically fixed on both sides of the inverted U-shaped support plate (1); Its features are: The two side plates (2) are provided with a central groove (21), a guide groove (22) and a bending groove (23) on opposite sides. The two side plates (2) are fixed with a limit slide rail (24). A slide plate (25) is vertically slidably connected to the limit slide rail (24). A vertical groove roller (26) is rotatably connected to the slide plate (25) and rolls in the guide groove (22). An L-shaped plate (27) is slidably connected to the slide plate (25). An auxiliary roller (28) is rotatably connected to the L-shaped plate (27) and rolls in the bending groove (23). The auxiliary roller (28) is used to drive the L-shaped plate (27) to move laterally when it moves vertically, so as to prevent the upper and lower sets of L-shaped plates (27) from interfering with each other. The side plate (2) is provided with multiple guide rollers (29), and all guide rollers (29) are wrapped with an inverted U-shaped transmission belt (210). A connecting plate (211) is fixed on the inner side of the transmission belt (210). The connecting plate (211) is rotatably connected to the end face of the corresponding vertical groove roller (26) to drive the upper and lower L-shaped plates (27) to move synchronously in opposite directions, thereby realizing the switching of the cutting station.

2. The cutting device for porous bricks according to claim 1, characterized in that: A cutting wire (3) is installed between two L-shaped plates (27) at the same height. Both ends of the cutting wire (3) are fixed with extrusion rods (31). A damping spring telescopic tube (32) is provided between the extrusion rods (31) and the L-shaped plates (27) and sleeved on the outside of the cutting wire (3). A first spring telescopic plate (33) is fixed on the L-shaped plate (27), and a second spring telescopic plate (34) is fixed on the side plate (2). The second spring telescopic plate (34) has a U-shaped groove (35) for the extrusion rod (31) to move into and extrude and compress it. The second spring telescopic plate (34) can abut against the first spring telescopic plate (33) for limiting its movement. It is used to trigger the release of the limiting of the first spring telescopic plate (33) by the change of the cutting resistance of the cutting wire (3). A spring telescopic rod (4) is vertically fixed on the inverted U-shaped support plate (1). A locking plate (41) is fixed at the lower end of the spring telescopic rod (4). The locking plate (41) can abut against the first spring telescopic plate (33) to limit the retraction of the spring telescopic rod (4).

3. The cutting device for porous bricks according to claim 2, characterized in that: The bent through groove (23) is a C-shaped groove. The horizontal distance between the lower end of the bent through groove (23) and the guide through groove (22) is smaller than the horizontal distance between its upper end and the guide through groove (22). There are two guide through grooves (22) on the same side plate (2), which are symmetrically distributed on both sides of the middle groove (21). There are two bent through grooves (23) on the same side plate (2), which are symmetrically distributed on the outside of the two guide through grooves (22). There are two limiting slide rails (24) on the same side plate (2), and the slide plates (25) on the two limiting slide rails (24) are staggered.

4. A cutting device for porous bricks according to claim 2, characterized in that: There are six guide rollers (29) on each side plate (2), and the six guide rollers (29) are arranged in an inverted U-shape. The transmission belt (210) is tensioned and wrapped around the outside of the six guide rollers (29). There are two connecting plates (211) fixed on the inside of the transmission belt (210) with vertical spacing. The two connecting plates (211) are respectively rotatably connected to the vertical groove rollers (26) on the two sliding groove plates (25) on the same side.

5. A cutting device for porous bricks according to claim 2, characterized in that: Two auxiliary wheels (5) are installed on the side of the L-shaped plate (27) facing the cutting wire (3), and the cutting wire (3) overlaps on the two auxiliary wheels (5); the end of the damping spring telescopic tube (32) away from the extrusion rod (31) is fixedly inserted into the L-shaped plate (27).

6. A cutting device for porous bricks according to claim 2, characterized in that: A cleaning device (6) is fixed between the two side plates (2). The cutting wire (3) on the upper side can move into the cleaning device (6) along with the L-shaped plate (27). The cleaning device (6) includes a telescopic cylinder and a scraper fixed to the output end of the telescopic cylinder. The scraper is arranged corresponding to the surface of the cutting wire (3).

7. A cutting device for porous bricks according to claim 2, characterized in that: The outer tube of the spring telescopic rod (4) has a vertical guide groove. The inner rod of the spring telescopic rod (4) is fixed with a push block (42) that slides in the guide groove. The outer tube of the spring telescopic rod (4) is also fixed with an electric telescopic rod (43). The output end of the electric telescopic rod (43) is correspondingly set with the push block (42).

8. A cutting device for porous bricks according to claim 2, characterized in that: The outer side of the outer sleeve of the first spring telescopic plate (33) is provided with a cut surface, and the telescopic end of the first spring telescopic plate (33) is provided with an inclined surface.

9. A method of using a cutting device for porous bricks, comprising using a cutting device for porous bricks as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. In the initial state, the lower L-shaped plate (27) and the cutting wire (3) are in the cutting position, and the upper L-shaped plate (27) and the cutting wire (3) are in the waiting position. The second spring telescopic plate (34) abuts against the first spring telescopic plate (33) to form a vertical limit on the L-shaped plate (27). The spring telescopic rod (4) on the inverted U-shaped support plate (1) is in the extended state, and its lower end locking plate (41) abuts against the lower side of the inner plate of the first spring telescopic plate (33) in the cutting position to restrict the spring telescopic rod (4) from retracting, forming a double limit. The damping spring telescopic tube (32) provides constant tension for the cutting wire (3), and the external robotic arm drives the inverted U-shaped support plate (1) to move down, so that the fixed length cutting of the porous brick wet blank can be completed by the cutting wire (3); S2, Automatic triggering unlocking principle when the surface of the cutting wire (3) is sticky with material, causing the cutting resistance to rise, the wire is subjected to the reaction force of the blank to overcome the pre-tightening force of the damping spring telescopic tube (32), and pulls the extrusion rod (31) into the U-shaped groove (35) of the second spring telescopic plate (34), and the extrusion causes the inner plate of the second spring telescopic plate (34) to shrink. When the extrusion rod (31) moves to the deepest corner of the U-shaped groove (35), the inner plate of the second spring telescopic plate (34) moves to the cut surface of the outer plate of the first spring telescopic plate (33) and loses its limiting ability; after the cutting is completed, the steel wire is no longer under stress, the damping spring telescopic tube (32) resets and pushes the extrusion rod (31) out of the U-shaped groove (35), and the second spring telescopic plate (34) completely disengages from the first spring telescopic plate (33) and completes automatic unlocking; S3, Dual-station synchronous switching and interference-free avoidance principle; After the L-shaped plate (27) is unlocked, the contraction force of the spring telescopic rod (4) drives the L-shaped plate (27) of the cutting station to move upward along the limit slide rail (24) through the locking plate (41), and drives the inverted U-shaped transmission belt (210) to run along the guide roller (29) through the vertical groove roller (26) and the connecting plate (211), and synchronously drives the L-shaped plate (27) of the waiting station to move downward, so as to realize the synchronous reverse exchange of the two sets of cutting wires (3); During the repositioning process, the auxiliary roller (28) on the L-shaped plate (27) rolls along the C-shaped bend through groove (23), driving the L-shaped plate (27) to move laterally in the middle of the stroke to avoid interference between the upper and lower L-shaped plates (27); the vertical groove roller (26) rolls along the guide through groove (22) to provide precise guidance for vertical movement.

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