A pressing device for the production of adjustable fly ash tiles and its pressing method

Abstract

The present invention discloses a pressing device for the production of adjustable fly ash tiles, which includes a bottom plate, a lifting mechanism, and a stamping mechanism. The bottom plate is a horizontally placed rectangular plate. On both sides of the top surface of the bottom plate, there are a pair of vertically and symmetrically fixed side plates. Between the middles of the two side plates, there is a horizontally fixed cross plate. In the middle of the top surface of the cross plate, there is a rectangular through hole. Below the cross plate, there is a parallelly placed lifting plate, and a lifting mechanism is installed below the bottom surface of the lifting plate; above the cross plate, there is a horizontally placed lower pressing plate, and a stamping mechanism is installed above the top surface of the lower pressing plate. The present invention also discloses a pressing method for the pressing device for the production of adjustable fly ash tiles; through the combined use of each mechanism, the present invention solves the problems of cumbersome pressing operation steps and inconvenient discharging in the preparation of fly ash tiles, and the overall structure is designed compactly, increasing the stability during the pressing of fly ash, facilitating the discharging in the later stage of pressing, and improving the production efficiency of fly ash tiles.

Description

Technical Field

[0001] The present invention relates to the technical field of fly ash production, and particularly relates to a pressing device and a pressing method for the production of adjustable fly ash tiles. Background Art

[0002] Fly ash is the fine ash captured from the flue gas after coal combustion. It is one of the industrial waste residues with a large discharge in China at present. With the development of the power industry, the discharge of fly ash from coal-fired power plants increases year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere. If it is discharged into the water system, it will cause river siltation, and the toxic chemical substances in it will also harm humans and organisms. With the progress of society, people's awareness of environmental protection is becoming stronger and stronger, and gradually using fly ash to produce qualified environmentally friendly ceramic tile products.

[0003] However, there are quite a few problems in the process of pressing tiles using fly ash. Fly ash is a brittle substance after high-temperature combustion. The flexural strength of the green body obtained after pressing and forming is extremely low, and the green body is extremely easy to break during the subsequent preparation process. The existing pressing equipment has cumbersome operation steps and requires the cooperation of multiple people to complete the pressing process. Moreover, if the direct cylinder stamping method is used, the obtained green body is easy to adsorb on the pressing template, which is likely to cause inconvenience in later discharging. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and propose a pressing device for the production of adjustable fly ash tiles.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pressing device for the production of adjustable fly ash tiles, including a bottom plate, a lifting mechanism, and a stamping mechanism. The bottom plate is a horizontally placed rectangular plate. On both sides of the top surface of the bottom plate, there are a pair of vertically symmetrically fixed side plates. Between the middle parts of the two side plates, there is a horizontally fixed cross plate. In the middle of the top surface of the cross plate, there is a rectangular through hole. Below the cross plate, there is a parallelly placed lifting plate, and a lifting mechanism is installed below the bottom surface of the lifting plate. Above the cross plate, there is a horizontally placed lower pressing plate, and a stamping mechanism is installed above the top surface of the lower pressing plate.

[0007] Preferably, the lifting mechanism includes articulated rods, a lifting motor, and a lead screw. In the middle of the bottom surface of the lifting plate, there is an H-shaped ear seat. In each of the two openings of the H-shaped ear seat, there is an articulated rod that is movably articulated. At the bottom of the inner side surface of one side plate, a lifting motor with an output end facing inwards is installed. At the bottom of the inner side surface of the other side plate, a positioning bearing is installed. At the end of the motor shaft of the lifting motor, there is a lead screw that is coaxially connected. The outer end of the lead screw is inserted into the positioning bearing. The threads on both sides of the lead screw are spirally arranged symmetrically in the opposite direction, and a pair of screw barrels that are helically connected are sleeved on both sides of the lead screw. In the middle of the top surface of each screw barrel, it is movably articulated with the bottom end of the corresponding articulated rod.

[0008] Preferably, a lower template is provided on the top surface of the lifting plate below the rectangular through hole. At the four corners of the top surface of the lifting plate, there are positioning pins. At the four corners of the bottom surface of the cross plate, there are positioning holes opened, and the top end of each positioning pin is inserted into the corresponding positioning hole in a matching manner.

[0009] Preferably, in the inner sides of the four corners of the top surface of the lifting plate, there are positioning cylinders that are fixedly connected through. In each positioning cylinder, there is a positioning rod that slides through. The top end of each positioning rod is fixedly connected to the bottom surface of the cross plate, and the bottom end of each positioning rod is fixedly connected to the top surface of the bottom plate. And on the bottom section of each positioning rod, there is a positioning spring sleeved.

[0010] Preferably, the stamping mechanism includes a pressing rod, a stamping motor, and a stamping shaft. In the middle of the top surface of the lower pressing plate, there is a double-ear seat. In the double-ear seat, there is a pressing rod that is movably articulated. At the top of the inner side surface of one side plate, a stamping motor with an output end facing inwards is installed. At the top of the inner side surface of the other side plate, a limiting bearing is installed. At the end of the motor shaft of the stamping motor, there is a stamping shaft that is coaxially connected. The outer end of the stamping shaft is inserted into the limiting bearing. The middle section of the stamping shaft is U-shaped, and a rotating cylinder that is rotatably connected is sleeved on the middle section of the stamping shaft. And in the middle of the bottom surface of the rotating cylinder, it is fixedly connected to the top end of the pressing rod.

[0011] Preferably, an upper template is provided on the bottom surface of the lower pressing plate above the rectangular through hole. Outside the upper template, a limiting rectangular ring is provided on the bottom surface of the lower pressing plate. Outside the rectangular through hole, a limiting annular groove is recessed on the top surface of the cross plate, and the limiting rectangular ring is fitted and clamped in the limiting annular groove.

[0012] Preferably, a pair of trapezoidal plates are provided in the upper middle part of the inner side surface of each side plate. On the outer side surface of each trapezoidal plate, there is a vertically fixedly connected limiting cylinder. At the four corners of the top surface of the lower pressing plate, there are vertically fixedly connected limiting rods. And the top end of each limiting rod slides through the corresponding limiting cylinder, and a limiting spring is sleeved on the bottom section of each limiting rod.

[0013] The present invention also provides a pressing method for a pressing device used in the production of adjustable fly ash tiles, which includes the following steps:

[0014] Step 1: The lifting motor and the stamping motor are respectively electrically connected to an external power source through power lines. Start the lifting motor, and control the motor shaft of the lifting motor to drive the lead screw to rotate forward. Since the threads on both sides of the lead screw are arranged in a reverse symmetric spiral, it drives the two wire barrels to move spirally inward towards each other. With the cooperation of the hinge action, the lifting plate is slowly lifted through the hinge rod and the H-shaped ear seat.

[0015] Step 2: While the lifting plate is rising, it drives the positioning cylinder to slide upward synchronously along the positioning rod, driving the positioning pin to be inserted into the positioning hole in cooperation, causing the positioning spring to deform and expand. After the lower template is engaged with the bottom of the rectangular through-hole, stop the operation of the lifting motor, and add fly ash raw materials into the rectangular through-hole.

[0016] Step 3: Start the stamping motor, and control the motor shaft of the stamping motor to drive the stamping shaft to rotate slowly forward. Then drive the rotating cylinder to rotate in cooperation with the middle part of the stamping shaft. Since the middle section of the stamping shaft is U-shaped, the lower pressing rod is slowly pressed down through the rotating cylinder. With the cooperation of the hinge action, the lower pressing plate is slowly lowered.

[0017] Step 4: While the lower pressing plate is slowly descending, it drives the limiting rod to slide downward along the limiting cylinder, causing the limiting spring to deform and expand, driving the limiting rectangular ring to be engaged with the limiting annular groove in cooperation, and then driving the upper template to be engaged with the rectangular through-hole, and pressing the fly ash raw materials into shape.

[0018] Step 5: Subsequently, control the stamping motor to drive the stamping shaft to continue rotating, drive the lower pressing rod to slowly rise through the rotating cylinder, drive the lower pressing plate to slowly rise, drive the limiting rod to slide upward along the limiting cylinder, causing the limiting spring to deform and compress, drive the limiting rectangular ring to disengage from the limiting annular groove in cooperation, and then drive the upper template to disengage from the rectangular through-hole, and then stop the operation of the stamping motor.

[0019] Step 6: Control the motor shaft of the lifting motor to drive the lead screw to rotate reversely, drive the two wire barrels to move spirally outward in the reverse direction, drive the lifting plate to slowly descend through the hinge rod and the H-shaped ear seat; drive the positioning cylinder to slide downward synchronously along the positioning rod, drive the positioning pin to disengage from the positioning hole in cooperation, causing the positioning spring to deform and compress, and then drive the lower template to disengage from the rectangular through-hole, so that the pressed fly ash tiles fall along the rectangular through-hole, and then collect them.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In the present invention, the motor shaft of the lifting motor drives the lead screw to rotate forward and backward. Since the thread teeth on both sides of the lead screw are arranged in reverse symmetric spirals, it drives the two wire drums to move spirally towards or away from each other. With the cooperation of the hinge action, the lifting plate is slowly lifted or lowered through the hinge rod and the H-shaped ear seat; thereby driving the positioning cylinder to slide synchronously along the positioning rod, driving the positioning pin to be inserted into the positioning hole, causing the positioning spring to deform, which facilitates driving the lower template to engage with the rectangular through hole;

[0022] 2. In the present invention, the motor shaft of the stamping motor drives the stamping shaft to rotate slowly, thereby driving the rotating cylinder to rotate in cooperation with the middle part of the stamping shaft. Since the middle section of the stamping shaft is U-shaped, the lower pressing rod is slowly lifted or lowered through the rotating cylinder. With the cooperation of the hinge action, the lower pressing plate is slowly lifted or lowered; driving the limiting rod to slide along the limiting cylinder, causing the limiting spring to deform, driving the limiting rectangular ring to be inserted into the limiting annular groove, which facilitates driving the upper template to engage with the rectangular through hole;

[0023] In summary, through the combined use of various mechanisms, the present invention solves the problems of cumbersome pressing operation steps and inconvenient discharging in the preparation of fly ash tiles. Moreover, the overall structure is designed compactly, increasing the stability during the pressing of fly ash, facilitating the discharging in the later stage of pressing, and further improving the production efficiency of fly ash tiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 is the front view of the present invention;

[0026] Figure 2 is the front sectional view of the present invention;

[0027] Figure 3 is the top view schematic diagram of the cross plate of the present invention;

[0028] Figure 4 is of the present invention Figure 2 enlarged view at A in;

[0029] Figure 5 is the schematic diagram of the pressing method of the present invention;

[0030] Reference numerals in the figure: bottom plate 1, lifting plate 11, lower template 12, lifting motor 13, lead screw 14, wire drum 15, H-shaped ear seat 16, articulated rod 17, side plate 2, cross plate 21, rectangular through hole 22, limiting annular groove 23, positioning cylinder 24, positioning rod 25, positioning pin 26, lower pressing plate 3, upper template 31, limiting rectangular ring 32, stamping motor 33, stamping shaft 34, rotating cylinder 35, lower pressing rod 36, trapezoidal plate 37, limiting cylinder 38, limiting rod 39. Specific implementation mode

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1: To solve the problems of cumbersome pressing operation steps and inconvenient discharging in the preparation of fly ash tiles, a pressing device for the production of adjustable fly ash tiles is proposed in this embodiment. Refer to Figures 1-4 , including a bottom plate 1, a lifting mechanism, and a stamping mechanism. The bottom plate 1 is a horizontally placed rectangular plate. On both sides of the top surface of the bottom plate 1, there are a pair of vertically symmetrically fixed side plates 2. Between the middle parts of the two side plates 2, there is a horizontally fixed cross plate 21. In the middle of the top surface of the cross plate 21, there is a rectangular through hole 22. Below the cross plate 21, there is a parallelly placed lifting plate 11, and a lifting mechanism is installed below the bottom surface of the lifting plate 11; above the cross plate 21, there is a horizontally placed lower pressing plate 3, and a stamping mechanism is installed above the top surface of the lower pressing plate 3.

[0033] In the present invention, the lifting mechanism includes an articulated rod 17, a lifting motor 13, and a lead screw 14. In the middle of the bottom surface of the lifting plate 11, there is an H-shaped ear seat 16. In each of the two openings of the H-shaped ear seat 16, there is an actively articulated articulated rod 17. At the bottom of the inner side surface of one side plate 2, a lifting motor 13 with an output end facing inwards is installed. The model of the lifting motor 13 is YX3-112M-4. At the bottom of the inner side surface of the other side plate 2, a positioning bearing is installed. At the end of the motor shaft of the lifting motor 13, there is a coaxial connection lead screw 14. The outer end of the lead screw 14 is inserted into the positioning bearing. The threads on both sides of the lead screw 14 are symmetrically helical in the opposite direction, and a pair of helically connected wire drums 15 are sleeved on both sides of the lead screw 14. In the middle of the top surface of each wire drum 15, it is actively articulated with the bottom end of the corresponding articulated rod 17.

[0034] In the present invention, a lower template 12 is provided on the top surface of the lifting plate 11 below the rectangular through hole 22. Positioning pins 26 are provided at the four corners of the top surface of the lifting plate 11. Positioning holes are formed at the four corners of the bottom surface of the cross plate 21, and the top end of each positioning pin 26 is inserted into the corresponding positioning hole in a matching manner; positioning cylinders 24 are fixedly connected through the four corners of the top surface of the lifting plate 11 in the inner side. A positioning rod 25 that slides through is inserted into each positioning cylinder 24. The top end of each positioning rod 25 is fixedly connected to the bottom surface of the cross plate 21, the bottom end of each positioning rod 25 is fixedly connected to the top surface of the bottom plate 1, and a positioning spring is sleeved on the bottom section of each positioning rod 25; controlling the motor shaft of the lifting motor 13 to drive the lead screw 14 to rotate forward and backward. Since the threads on both sides of the lead screw 14 are symmetrically helical in the reverse direction, it drives the two wire cylinders 15 to move helically towards or away from each other. Under the cooperation of the hinge action, the lifting plate 11 is slowly lifted and lowered through the hinge rod 17 and the H-shaped ear seat 16; thereby driving the positioning cylinder 24 to slide synchronously along the positioning rod 25, driving the positioning pin 26 to be inserted into the positioning hole in a matching manner, causing the positioning spring to deform, and facilitating driving the lower template 12 to be engaged with the rectangular through hole 22.

[0035] In the present invention, the stamping mechanism includes a lower pressing rod 36, a stamping motor 33, and a stamping shaft 34. A double-ear seat is provided in the middle of the top surface of the lower pressing plate 3. The lower pressing rod 36 is movably hinged in the double-ear seat. A stamping motor 33 with an output end facing inwards is installed at the top of the inner side surface of one side plate 2. The model of the stamping motor 33 is YE2-80M2-4. A limit bearing is installed at the top of the inner side surface of the other side plate 2. The end of the motor shaft of the stamping motor 33 is coaxially connected with a stamping shaft 34. The outer end of the stamping shaft 34 is inserted into the limit bearing. The middle section of the stamping shaft 34 is U-shaped, and a rotating cylinder 35 is sleeved on the middle section of the stamping shaft 34 in a rotatable connection manner. The middle of the bottom surface of the rotating cylinder 35 is fixedly connected to the top end of the lower pressing rod 36.

[0036] In the present invention, an upper template 31 is provided on the bottom surface of the lower pressing plate 3 above the rectangular through hole 22. A limiting rectangular ring 32 is provided on the bottom surface of the lower pressing plate 3 outside the upper template 31. A limiting annular groove 23 is recessed on the top surface of the cross plate 21 outside the rectangular through hole 22, and the limiting rectangular ring 32 is fitted and engaged in the limiting annular groove 23. A pair of trapezoidal plates 37 are provided in the upper middle part of the inner side surface of each side plate 2. A vertically fixed limiting cylinder 38 is provided on the outer side surface of each trapezoidal plate 37. Vertically fixed limiting rods 39 are provided at the four corners of the top surface of the lower pressing plate 3, and the top end of each limiting rod 39 slides through the corresponding limiting cylinder 38. A limiting spring is sleeved on the bottom section of each limiting rod 39. The motor shaft of the stamping motor 33 is controlled to drive the stamping shaft 34 to rotate slowly, and then drive the rotating cylinder 35 to rotate in cooperation with the middle part of the stamping shaft 34. Since the middle section of the stamping shaft 34 is U-shaped, the lower pressing rod 36 is driven to rise and fall slowly through the rotating cylinder 35. Under the cooperation of the hinge action, the lower pressing plate 3 is driven to rise and fall slowly. The limiting rod 39 is driven to slide along the limiting cylinder 38, causing the limiting spring to deform, and driving the limiting rectangular ring 32 to be inserted in cooperation with the limiting annular groove 23, which facilitates driving the upper template 31 to be engaged with the rectangular through hole 22.

[0037] Embodiment 2: Refer to Figure 5 , in this embodiment, the present invention also proposes a pressing method for a pressing device for the production of adjustable fly ash tiles, including the following steps:

[0038] Step 1, the lifting motor 13 and the stamping motor 33 are respectively electrically connected to an external power supply through power lines. The lifting motor 13 is started, and the motor shaft of the lifting motor 13 is controlled to drive the lead screw 14 to rotate forward. Since the threads on both sides of the lead screw 14 are helically arranged symmetrically in the reverse direction, the two wire drums 15 are driven to move spirally inward in opposite directions. Under the cooperation of the hinge action, the lifting plate 11 is driven to rise slowly through the hinge rod 17 and the H-shaped ear seat 16.

[0039] Step 2, while the lifting plate 11 rises, the positioning cylinder 24 is driven to slide upward synchronously along the positioning rod 25, and the positioning pin 26 is driven to be inserted into the positioning hole in cooperation, causing the positioning spring to deform and open. After the lower template 12 is fitted and engaged with the inner bottom of the rectangular through hole 22, the operation of the lifting motor 13 is stopped, and fly ash raw materials are added into the rectangular through hole 22.

[0040] Step 3, the stamping motor 33 is started, and the motor shaft of the stamping motor 33 is controlled to drive the stamping shaft 34 to rotate slowly and forward. Then, the rotating cylinder 35 is driven to rotate in cooperation with the middle part of the stamping shaft 34. Since the middle section of the stamping shaft 34 is U-shaped, the lower pressing rod 36 is driven to press down slowly through the rotating cylinder 35. Under the cooperation of the hinge action, the lower pressing plate 3 is driven to descend slowly.

[0041] Step 4: While the lower pressing plate 3 slowly descends, it drives the limiting rod 39 to slide downward along the limiting cylinder 38, causing the limiting spring to deform and expand, driving the limiting rectangular ring 32 to fit and engage in the limiting annular groove 23, and then driving the upper template 31 to fit and engage in the rectangular through-hole 22, and pressing and forming the fly ash raw material;

[0042] Step 5: Subsequently, control the stamping motor 33 to drive the stamping shaft 34 to continue rotating, drive the lower pressing rod 36 to slowly rise through the rotating cylinder 35, drive the lower pressing plate 3 to slowly rise, drive the limiting rod 39 to slide upward along the limiting cylinder 38, causing the limiting spring to deform and compress, drive the limiting rectangular ring 32 to disengage from the limiting annular groove 23, and then drive the upper template 31 to disengage from the rectangular through-hole 22, and then stop the operation of the stamping motor 33;

[0043] Step 6: Control the motor shaft of the lifting motor 13 to drive the lead screw 14 to rotate in the reverse direction, drive the two wire drums 15 to move outward in a reverse spiral, drive the lifting plate 11 to slowly descend through the hinge rod 17 and the H-shaped ear seat 16; drive the positioning cylinder 24 to slide downward synchronously along the positioning rod 25, drive the positioning pin 26 to disengage from the positioning hole, causing the positioning spring to deform and compress, and then drive the lower template 12 to disengage from the rectangular through-hole 22, so that the formed fly ash tiles fall along the rectangular through-hole 22, and then collect them.

[0044] Through the coordinated use of each mechanism, the present invention solves the problems of cumbersome pressing operation steps and inconvenient discharging in the preparation of fly ash tiles, and the overall structure is designed compactly, increasing the stability during the pressing of fly ash, facilitating the discharging in the later stage of pressing, and further improving the production efficiency of fly ash tiles.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A pressing device for the production of adjustable fly ash tiles, comprising a bottom plate (1), a lifting mechanism, and a stamping mechanism, characterized in that: The bottom plate (1) is a horizontally placed rectangular plate. On both sides of the top surface of the bottom plate (1), there are a pair of vertically and symmetrically fixed side plates (2). Between the middles of the two side plates (2), there is a horizontally fixed cross plate (21). In the middle of the top surface of the cross plate (21), there is a rectangular through hole (22). Below the cross plate (21), there is a parallelly placed lifting plate (11), and a lifting mechanism is installed below the bottom surface of the lifting plate (11); above the cross plate (21), there is a horizontally placed lower pressing plate (3), and a stamping mechanism is installed above the top surface of the lower pressing plate (3). The lifting mechanism includes a hinge rod (17), a lifting motor (13), and a lead screw (14). In the middle of the bottom surface of the lifting plate (11), there is an H-shaped ear seat (16). In each of the two openings of the H-shaped ear seat (16), there is a hinge rod (17) that is movably hinged. At the bottom of the inner side surface of one side plate (2), there is a lifting motor (13) with an output end facing inwards. At the bottom of the inner side surface of the other side plate (2), there is a positioning bearing. At the end of the motor shaft of the lifting motor (13), there is a coaxial lead screw (14). The outer end of the lead screw (14) is inserted into the positioning bearing. The threads on both sides of the lead screw (14) are symmetrically helical in opposite directions, and a pair of screw barrels (15) that are helically connected are sleeved on both sides of the lead screw (14). In the middle of the top surface of each screw barrel (15), it is movably hinged to the bottom end of the corresponding hinge rod (17). Below the rectangular through hole (22) and on the top surface of the lifting plate (11), there is a lower template (12). At the four corners of the top surface of the lifting plate (11), there are positioning pins (26). At the four corners of the bottom surface of the cross plate (21), there are positioning holes, and the top end of each positioning pin (26) is inserted into the corresponding positioning hole in a matching manner. At the inner sides of the four corners of the top surface of the lifting plate (11), there are through-fixed positioning cylinders (24). In each positioning cylinder (24), there is a positioning rod (25) that slides through. The top end of each positioning rod (25) is fixed to the bottom surface of the cross plate (21), the bottom end of each positioning rod (25) is fixed to the top surface of the bottom plate (1), and a positioning spring is sleeved on the bottom section of each positioning rod (25). The stamping mechanism includes a lower pressing rod (36), a stamping motor (33), and a stamping shaft (34). In the middle of the top surface of the lower pressing plate (3), there is a double-ear seat. In the double-ear seat, there is a lower pressing rod (36) that is movably hinged. At the top of the inner side surface of one side plate (2), there is a stamping motor (33) with an output end facing inwards. At the top of the inner side surface of the other side plate (2), there is a limit bearing. At the end of the motor shaft of the stamping motor (33), there is a coaxial stamping shaft (34). The middle section of the stamping shaft (34) is U-shaped, and a rotatably connected rotating cylinder (35) is sleeved on the middle section of the stamping shaft (34), and the middle of the bottom surface of the rotating cylinder (35) is fixed to the top end of the lower pressing rod (36). Above the rectangular through-hole (22), an upper template (31) is provided on the bottom surface of the lower pressing plate (3). Outside the upper template (31), a limiting rectangular ring (32) is provided on the bottom surface of the lower pressing plate (3). Outside the rectangular through-hole (22), a limiting annular groove (23) is recessed on the top surface of the cross plate (21), and the limiting rectangular ring (32) is fitted and engaged in the limiting annular groove (23). In the upper middle part of the inner side surface of each side plate (2), a pair of trapezoidal plates (37) are provided. On the outer side surface of each trapezoidal plate (37), a vertically fixed limiting cylinder (38) is provided. At the four corners of the top surface of the lower pressing plate (3), vertically fixed limiting rods (39) are provided. The top end of each limiting rod (39) slides through the corresponding limiting cylinder (38), and a limiting spring is sleeved on the bottom section of each limiting rod (39).

2. The pressing method of a pressing device for the production of adjustable fly ash tiles according to claim 1, characterized in that, It includes the following steps: Step 1: The lifting motor (13) and the stamping motor (33) are respectively electrically connected to an external power source through power lines. Start the lifting motor (13), and control the motor shaft of the lifting motor (13) to drive the lead screw (14) to rotate forward. Since the threads on both sides of the lead screw (14) are arranged in reverse symmetric spirals, drive the two wire drums (15) to move spirally inward in opposite directions. Under the cooperation of the hinge action, drive the lifting plate (11) to slowly rise through the hinge rod (17) and the H-shaped ear seat (16). Step 2: While the lifting plate (11) rises, drive the positioning cylinder (24) to slide upward synchronously along the positioning rod (25), drive the positioning pin (26) to be inserted into the positioning hole in cooperation, so that the positioning spring deforms and opens. After the lower template (12) is fitted and engaged in the inner bottom of the rectangular through-hole (22), stop the operation of the lifting motor (13), and add fly ash raw materials into the rectangular through-hole (22). Step 3: Start the stamping motor (33), and control the motor shaft of the stamping motor (33) to drive the stamping shaft (34) to rotate slowly forward. Then drive the rotating cylinder (35) to rotate in cooperation with the middle part of the stamping shaft (34). Since the middle section of the stamping shaft (34) is U-shaped, drive the lower pressing rod (36) to slowly press down through the rotating cylinder (35). Under the cooperation of the hinge action, drive the lower pressing plate (3) to slowly descend. Step 4: While the lower pressing plate (3) slowly descends, drive the limiting rod (39) to slide downward along the limiting cylinder (38), so that the limiting spring deforms and opens, drive the limiting rectangular ring (32) to be fitted and engaged in the limiting annular groove (23), and then drive the upper template (31) to be fitted and engaged in the rectangular through-hole (22), and press and form the fly ash raw materials. Step 5: Subsequently, control the stamping motor (33) to drive the stamping shaft (34) to continue rotating, drive the lower pressing rod (36) to slowly rise through the rotating cylinder (35), drive the lower pressing plate (3) to slowly rise, drive the limiting rod (39) to slide upward along the limiting cylinder (38), so that the limiting spring deforms and compresses, drive the limiting rectangular ring (32) to be disengaged from the limiting annular groove (23), and then drive the upper template (31) to disengage from the rectangular through-hole (22), and then stop the operation of the stamping motor (33). Step 6: Control the motor shaft of the lifting motor (13) to drive the lead screw (14) to rotate reversely, drive the two wire drums (15) to move spirally outwards in the reverse direction, drive the lifting plate (11) to slowly descend through the hinge rod (17) and the H-shaped ear seat (16); drive the positioning cylinder (24) to slide down synchronously along the positioning rod (25), drive the positioning pin (26) to disengage from the positioning hole, cause the positioning spring to deform and compress, and then drive the lower template (12) to disengage from the rectangular through hole (22), so that the pressed fly ash tiles fall along the rectangular through hole (22), and then collect them.

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