Method for forming roadbed blocks

Abstract

The present invention provides a method for forming a roadbed block. ① When a material distributing vehicle distributes material, the roadbed block mold frame starts mold vibration and the vibration table starts table vibration; ② After distributing the material, the mold vibration and table vibration are turned off; ③ A pressure head is suspended above the upper surface of the material, and the mold vibration and table vibration are turned on; ④ After the suspension vibration ends, the original motor speed is maintained to continue mold vibration, and the motor speed is increased to continue table vibration; ⑤ The pressure head applies pressure downward, and the motor speed is increased to continue mold vibration, and the motor speed is maintained to continue table vibration; and when the pressure head is pressurized to form, the pressure head starts vibration after a preset delay; ⑥ Before the roadbed block is formed in place, the pressure head turns off vibration and the mold vibration; after the roadbed block is formed in place, the vibration table is turned to idle speed; ⑦ When the vibration table eliminates aftershocks, the mold vibration is turned on to eliminate vacuum; after the vacuum is eliminated, the mold vibration is turned off; ⑧ The roadbed block mold frame is demolded. The advantages of the present invention are that it can prevent the formed roadbed block from being damaged by mold sticking during demolding, and has a short molding cycle, thereby improving production efficiency.

Description

Technical field

[0001] The invention relates to the technical field of brick forming, in particular to a forming method of a roadbed block. [Background Technology]

[0002] Currently, prefabricated pavement substructures (referred to as roadbed blocks) have been widely adopted. These blocks are rectangular parallelepiped blocks. Compared to traditional vibration-formed cubic blocks, these blocks are 20 to 40 cm thick, with a top surface area of ​​approximately 1 square meter, making them both larger and thicker. Furthermore, each of the four sides of the block features a convex positive slope and a concave negative slope, with trapezoidal grooves on the slopes.

[0003] The Chinese utility model patent application number 202020922167.4 discloses a forming device for prefabricated road base blocks, including a truss, a table formwork coordinated vibration system, and a numerical control system for controlling the operation of the table formwork coordinated vibration system based on electrical connection and / or signal connection. The numerical control system and the table formwork coordinated vibration system are both installed on the truss. The table formwork coordinated vibration system mainly includes an upper pressure head, a vibration platform that cooperates with the upper pressure head, and a mold vibrator for providing lateral vibration pressure to the road base block; the forming device uses table formwork coordinated vibration to solve the problems of missing corners of the bottom fabric of the negative slope and loose virtual edges on the side of large-sized prefabricated road base blocks. However, the existing road base blocks have the following problems during the forming process: 1. The formed road base blocks are prone to mold sticking, which makes the road base blocks prone to breakage during the demolding process; 2. The entire forming cycle is relatively long, which reduces production efficiency. In view of the above-mentioned problems, the inventors of this case conducted in-depth research on the problem, which led to the creation of this case. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is to provide a method for forming a roadbed block, which solves the problems of easy mold sticking and long overall forming cycle in the forming process of existing roadbed blocks.

[0005] The present invention is achieved as follows: a method for forming a roadbed block, characterized in that the forming method comprises the following steps:

[0006] ① When the material placing vehicle enters the top of the roadbed block mold frame to place the material, it controls the roadbed block mold frame to start mold vibration and controls the vibration table to start table vibration at the same time;

[0007] ② After the material is placed, the material placing vehicle is controlled to leave the top of the roadbed block mold frame, the roadbed block mold frame is controlled to close the mold vibration, and the vibration table is controlled to close the table vibration;

[0008] ③Suspend the pressure head on the upper surface of the material, control the roadbed block mold frame to start mold vibration and the vibration table to start table vibration, so that the pressure head is suspended and vibrates and continues to slide down by its own weight;

[0009] ④ After the suspension vibration is completed, the roadbed block mold frame is controlled to maintain the original motor speed to continue the vibration, and the vibration table is controlled to increase the motor speed to continue the table vibration;

[0010] ⑤ Control the pressure head to pressurize the material downward to form it, control the roadbed block mold frame to increase the motor speed to continue the mold vibration, and control the vibration table to maintain the original motor speed to continue the table vibration; and when the pressure head pressurizes the material to form it, control the pressure head to start vibration after a preset delay time;

[0011] ⑥ Before the roadbed block is formed into place, the pressure head is controlled to shut down the vibration and the roadbed block mold frame is controlled to shut down the mold vibration; after the roadbed block is formed into place, the vibration table is controlled to turn to idle speed;

[0012] ⑦ When the vibration table eliminates aftershocks, the roadbed block mold frame is controlled to start the mold vibration to eliminate the vacuum formed between the roadbed block and the roadbed block mold frame; after the vacuum elimination is completed, the roadbed block mold frame is controlled to close the mold vibration;

[0013] ⑧Control the roadbed block mold frame for demoulding.

[0014] Furthermore, in step ①, the motor speed of the mold vibration is 1500-2000 r / min, and the motor speed of the table vibration is 2500-3000 r / min.

[0015] Furthermore, in step ③, the motor speed of the mold vibration is 2000-2200 r / min, the motor speed of the table vibration is 2700-3000 r / min, and the time of the mold vibration and the table vibration is 5-10 seconds.

[0016] Furthermore, in step ③, when the pressure head is suspended on the upper surface of the material, the lower surface of the pressure head is pressed down 3-5 mm from the upper surface of the roadbed block mold frame; during the suspension vibration of the pressure head, the cylinder solenoid valve of the pressure head is continuously opened and closed, wherein the opening time is 0.1S and the closing time is 0.3S.

[0017] Furthermore, in step ④, the mold vibration maintains the original motor speed of 2000-2200 r / min, and the table vibration is increased from the original 2700-3000 r / min to 4000 r / min.

[0018] Furthermore, in step ⑤, the pressure applied by the pressure head is 3.5MPa; the table vibration maintains the original motor speed of 4000r / min, the mold vibration is increased from the original 2000-2200r / min to 3000-3600r / min, and the mold vibration time is controlled at 1.5-2S; the delay preset time is 0.5-0.8S, and the time for the pressure head vibration to be turned on is 0.8-1.5S.

[0019] Furthermore, in step ⑥, the motor speed of the vibration table at idle speed is 500-800 r / min.

[0020] Furthermore, in step ⑦, the speed of the motor for the vibration model is 3000-3300 r / min, and the time for eliminating aftershocks is 1-3 seconds.

[0021] Furthermore, controlling the roadbed block mold frame to demould the mold body includes: first controlling the telescopic oil cylinder on the roadbed block mold frame to drive the inner mold frame side plates to move outward, and then controlling the roadbed block mold frame to rise as a whole.

[0022] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved:

[0023] 1. When the vibration table eliminates aftershocks, the roadbed block mold frame is controlled to start mold vibration at the same time, which can eliminate the vacuum formed between the formed roadbed block and the roadbed block mold frame, thereby avoiding the formed roadbed block from being damaged due to sticking to the mold during demoulding, so that the slurry surfaces on the four sides of the roadbed block remain intact, thereby improving the quality of the roadbed block product.

[0024] 2. Before using the pressure head to pressurize and shape the material, suspend the pressure head on the upper surface of the material, and control the roadbed block mold frame to start mold vibration and the vibration table to start table vibration, so that the pressure head is suspended and vibrates and continues to slide down by its own weight, which can enable the material to flow quickly in the roadbed block mold frame, thereby better and faster filling the internal gap.

[0025] 3. When the material placing vehicle is spreading the material, the pressure head is suspended and vibrated, and the roadbed block is formed, the roadbed block mold frame is opened for vibration, which can promote the flow of concrete slurry on the side wall and quickly form a slurry surface on the inner wall of the roadbed block mold frame, thereby ensuring that a complete slurry surface can be formed on the four sides of the roadbed block, thereby improving the quality of the roadbed block product.

[0026] 4. By adopting the molding method of the present invention, the molding cycle can be well controlled at 42-45S / plate, the molding cycle is short, and the production efficiency can be improved.

[0027] 5. In the process of the pressure head pressurizing and molding the material, the roadbed block mold frame is used for mold vibration, and the vibration table is used for table vibration. The pressure head is also turned on for vibration after a preset delay time. Through the coordination of mold vibration, table vibration and pressure head vibration, the bottom, both sides and top of the roadbed block have a vibration effect. Therefore, the material can be compacted better and faster, thereby ensuring the quality of the formed roadbed block.

Brief Description of the Drawings

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a flowchart of an execution process of a roadbed block forming method of the present invention;

[0030] Figure 2 This is one of the three-dimensional structural diagrams of the molding machine of the present invention;

[0031] Figure 3 This is the second three-dimensional structural diagram of the molding machine of the present invention;

[0032] Figure 4 This is an assembly structure diagram of the mold frame vibration component and the roadbed block mold frame in the present invention;

[0033] Figure 5 It is a structural diagram of the roadbed block mold frame of the present invention;

[0034] Figure 6 This is a bottom structural diagram of the vibration table of the present invention;

[0035] Figure 7 This is a bottom structural diagram of the vibration table of the present invention after removing the vibration box;

[0036] Figure 8 It is a structural diagram of the existing roadbed block.

[0037] Description of reference numerals:

[0038] Roadbed block 100', positive slope 101', negative slope 102', trapezoidal groove 103';

[0039] Molding machine 100;

[0040] Material distribution vehicle 1, moving track 11, pushing component 12, hopper 13;

[0041] Roadbed block mold frame 2, telescopic cylinder 21, outer mold frame 22, inner mold frame 23, inner mold frame side plate 231, guide block 24;

[0042] Vibration table 3, vibration table body 31, vibration box 32, eccentric block vibration assembly 33, vibration drive motor 34;

[0043] Indenter 4;

[0044] Frame 5, left half frame 51, right half frame 52;

[0045] Lifting mechanism 6, airbag pressing assembly 61;

[0046] Pressure head lifting mechanism 7;

[0047] Mold frame vibration assembly 8, mold vibration drive motor 81, drive belt 82, vibration support seat 83, drive shaft 84, eccentric block 85, pulley 86. [Specific implementation method]

[0048] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0049] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of these embodiments and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. In addition, the terms "first," "second," and the like are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features defined as "first," "second," and the like may explicitly or implicitly include one or more of such features.

[0050] Before that, let’s first introduce the specific structure of the existing roadbed blocks, such as Figure 8 As shown, the four sides of the existing roadbed block 100' all have a convex male slope 101' and a concave female slope 102', and the slope is provided with a trapezoidal groove 103'. In order to enable each roadbed block 100' to be better spliced, it is necessary to ensure the molding quality of the male slope 101', the female slope 102' and the trapezoidal groove 103', that is, it is necessary to form a complete slurry surface on all four sides of the roadbed block 100'.

[0051] See also Figures 1 to 7 As shown, the present invention provides a method for forming a roadbed block, the forming method comprising the following steps:

[0052] ① When the material distributing vehicle 1 enters the top of the roadbed block mold frame 2 to distribute the material, it controls the roadbed block mold frame 2 to start the mold vibration, and simultaneously controls the vibration table 3 to start the table vibration; because the material (i.e., concrete material) just distributed in the roadbed block mold frame 2 is loose, with large internal gaps and extremely low density, it is difficult for the material distributing vehicle 1 to distribute all the required material into the roadbed block mold frame 2 at one time. Therefore, the present invention adopts the method of simultaneously turning on the mold vibration and the table vibration when distributing the material, which can initially increase the density of the material, thereby facilitating the distribution of all the material in the material distributing vehicle 1 into the roadbed block mold frame 2;

[0053] ② After the material distribution is completed, the material distribution vehicle 1 is controlled to leave the top of the roadbed block mold frame 2 to facilitate the compaction operation of the material in the roadbed block mold frame 2; the roadbed block mold frame 2 is controlled to turn off the mold vibration and the vibration table 3 is controlled to turn off the table vibration;

[0054] ③ Suspend the pressure head 4 above the upper surface of the material, control the roadbed block mold frame 2 to start mold vibration and the vibration table 3 to start table vibration, so that the pressure head 4 is suspended and vibrates and continuously slides down by its own weight, so that the material can flow quickly in the roadbed block mold frame 2, thereby filling the internal gaps;

[0055] ④ After the suspension vibration is completed, the roadbed block mold frame 2 is controlled to maintain the original motor speed to continue the vibration, and the vibration table 3 is controlled to increase the motor speed to continue the table vibration;

[0056] ⑤ Control the pressure head 4 to pressurize the material downward to form it, control the roadbed block mold frame 2 to increase the motor speed to continue the mold vibration, and control the vibration table 3 to maintain the original motor speed to continue the table vibration; and when the pressure head 4 pressurizes the material to form it, the pressure head 4 is controlled to start vibration after a preset delay time to better compact the material downward;

[0057] ⑥ Before the roadbed block is formed in place, the pressure head 4 is controlled to turn off vibration and the roadbed block mold frame 2 is controlled to turn off mold vibration; after the roadbed block is formed in place, the vibration table 3 is controlled to idle speed. The so-called idle speed means that the motor of the vibration table 3 does not stop running, but continues to rotate at a lower speed;

[0058] ⑦ When the vibration table 3 eliminates aftershocks, the roadbed block mold frame 2 is controlled to start mold vibration to eliminate the vacuum formed between the roadbed block and the roadbed block mold frame 2, thereby preventing the formed roadbed block from sticking to the mold and causing damage during demoulding; after the vacuum is eliminated, the roadbed block mold frame 2 is controlled to stop mold vibration; wherein, the vibration table 3 eliminating aftershocks means turning off the motor of the vibration table 3 so that the motor no longer works;

[0059] ⑧Control the roadbed block mold frame 2 to demould.

[0060] By adopting the above technical solution of the present invention, at least the following beneficial effects are achieved:

[0061] 1. When the vibration table 3 eliminates aftershocks, the roadbed block mold frame 2 is controlled to start mold vibration at the same time, which can eliminate the vacuum formed between the formed roadbed block and the roadbed block mold frame 2, thereby avoiding the formed roadbed block from being damaged due to sticking to the mold during demoulding, so that the slurry surfaces on the four sides of the roadbed block remain intact, thereby improving the quality of the roadbed block product.

[0062] 2. Before using the pressure head 4 to pressurize and shape the material, the pressure head 4 is suspended on the upper surface of the material, and the roadbed block mold frame 2 is controlled to start mold vibration and the vibration table 3 is controlled to start table vibration, so that the pressure head 4 is suspended and vibrates and continuously slides down by its own weight, which can enable the material to flow quickly in the roadbed block mold frame 2, thereby better and faster filling the internal gap.

[0063] 3. When the material distributing vehicle 1 is distributing material, the pressure head 4 is in suspended vibration, and the roadbed block is formed, the roadbed block mold frame 2 is opened for mold vibration, which can promote the flow of concrete slurry on the side wall and quickly form a slurry surface on the inner wall of the roadbed block mold frame 2, thereby ensuring that a complete slurry surface can be formed on all four sides of the roadbed block, thereby improving the quality of the roadbed block product.

[0064] 4. By adopting the molding method of the present invention, the molding cycle can be well controlled at 42-45S / plate, the molding cycle is short, and the production efficiency can be improved.

[0065] 5. In the process of pressure forming the material by the pressure head 4, the roadbed block mold frame 2 is used for mold vibration, and the vibration table 3 is used for table vibration. After a preset delay time, the pressure head 4 is turned on for vibration. Through the coordination of mold vibration, table vibration and vibration of the pressure head 4, the bottom, both sides and top of the roadbed block have a vibration effect. Therefore, the material can be compacted better and faster, thereby ensuring the quality of the formed roadbed block.

[0066] In a preferred embodiment of the present invention, in order to enable the material in the material distributing vehicle 1 to be distributed to the roadbed block mold frame 2 better and faster, in step ①, the motor speed of the mold vibration is 1500-2000r / min, and the motor speed of the table vibration is 2500-3000r / min. For example, when step ① is implemented, the motor speed of the mold vibration can be any one of 1500r / min, 1600r / min, 1700r / min, 1800r / min, 1900r / min, and 2000r / min, and the motor speed of the table vibration can be any one of 2500r / min, 2600r / min, 2700r / min, 2800r / min, 2900r / min, and 3000r / min; of course, the present invention is not limited to the specific numerical values ​​listed above. When implemented, the motor speeds of the mold vibration and the table vibration can be adjusted within the corresponding motor speed range according to actual needs.

[0067] Before step ①, it is also necessary to control the material distribution vehicle 1 to move above the roadbed block mold frame 2 and align the material distribution port of the material distribution vehicle 1 with the roadbed block mold frame 2, so as to distribute the material in the material distribution vehicle 1 into the roadbed block mold frame 2.

[0068] In a preferred embodiment of the present invention, in order to achieve a better suspension vibration effect, in step ③, the motor speed of the mold vibration is 2000-2200r / min, the motor speed of the table vibration is 2700-3000r / min, and the time of the mold vibration and the table vibration is 5-10S. It should be noted here that in the present invention, S represents the time unit second, and the time of the mold vibration and the table vibration is the same. For example, when step ③ is implemented, the motor speed of the mold vibration can be any one of 2000r / min, 2100r / min, and 2200r / min, and the motor speed of the table vibration can be any one of 2700r / min, 2800r / min, 2900r / min, and 3000r / min. The time of the mold vibration and the table vibration can be any one of 5S, 6S, 7S, 8S, 9S, and 10S; of course, the present invention is not limited to the specific numerical values ​​listed above. During the specific implementation, the motor speed of the mold vibration, the motor speed of the table vibration, and the time can be adjusted within the corresponding motor speed range and time range according to actual needs.

[0069] In a preferred embodiment of the present invention, in step ③, when the pressure head 4 is suspended on the upper surface of the material, the lower surface of the pressure head 4 is pressed down by 3-5 mm from the upper surface of the roadbed block mold frame 2, that is, the pressure head 4 is pressed down by 3-5 mm relative to the upper surface of the roadbed block mold frame 2; for example, when step ③ is specifically implemented, the pressure head 4 can be pressed down by any one of 3 mm, 4 mm, and 5 mm relative to the upper surface of the roadbed block mold frame 2.

[0070] During the suspension vibration of the pressure head 4, the oil cylinder solenoid valve of the pressure head 4 is continuously opened and closed, wherein the opening time is 0.1S and the closing time is 0.3S. Since the oil cylinder solenoid valve of the pressure head 4 is continuously opened and closed, the oil circuit system of the pressure head 4 has no pressure or very small pressure during this process, and the pressure head 4 can continue to slide down by its own weight.

[0071] In step ③, the suspension time of the pressure head 4 can be set according to actual needs. In order to ensure the suspension effect and make the material flow better and faster in the roadbed block mold frame 2, the suspension time of the pressure head 4 can be set to 5-10S.

[0072] In a preferred embodiment of the present invention, in step ④, the mold vibration maintains the original motor speed of 2000-2200r / min, and the table vibration is increased from the original 2700-3000r / min to 4000r / min. By increasing the motor speed of the table vibration, the bottom of the roadbed block can be better vibrated.

[0073] In a preferred embodiment of the present invention, in step ⑤, the pressure applied by the pressure head 4 is 3.5MPa, so as to better compact the material downward and improve the density of the formed roadbed block. Of course, the present invention is not limited to this. During specific implementation, the pressure value of the pressure head 4 can also be adjusted according to actual needs; the table vibration maintains the original motor speed of 4000r / min, and the mold vibration is increased from the original 2000-2200r / min to 3000-3600r / min, and the mold vibration time is controlled at 1.5-2S. By increasing the motor speed of the mold vibration, the two sides of the roadbed block can be better vibrated. For example, when step ⑤ is implemented, the motor speed of the mold vibration can be increased to any one of 3000r / min, 3100r / min, 3200r / min, 3300r / min, 3400r / min, 3500r / min, and 3600r / min, and the time of the mold vibration can be set to any one of 1.5S, 1.6S, 1.7S, 1.8S, 1.9S, and 2S; of course, the present invention is not limited to the specific numerical values ​​listed above. When implemented, the motor speed and time of the mold vibration can be adjusted within the corresponding motor speed range and time range according to actual needs.

[0074] In step ⑤, the preset delay time is 0.5-0.8S, and the vibration-on time of the pressure head 4 is 0.8-1.5S. For example, in the specific implementation of step ⑤, the preset delay time can be set to any one of 0.5S, 0.6S, 0.7S, and 0.8S, and the vibration-on time of the pressure head 4 can be set to any one of 0.8S, 0.9S, 1.0S, 1.1S, 1.2S, 1.3S, 1.4S, and 1.5S. Of course, the present invention is not limited to the specific values ​​listed above, and the specific time can be adjusted according to actual needs during specific implementation.

[0075] In a preferred embodiment of the present invention, in step ⑥, the motor speed of the vibration table 3 at idle is 500-800 r / min. For example, in the specific implementation of step ⑥, the motor speed of the vibration table 3 at idle can be any one of 500 r / min, 600 r / min, 700 r / min, and 800 r / min. Of course, the present invention is not limited to the specific values ​​listed above. In the specific implementation, the motor speed at idle can be adjusted within the corresponding motor speed range according to actual needs.

[0076] In step ⑥, before the roadbed block is formed into place, controlling the pressure head 4 to turn off the vibration and controlling the roadbed block mold frame 2 to turn off the mold vibration specifically means: after reaching the set mold vibration time (1.5-2S) and the vibration start time of the pressure head 4 (0.8-1.5S), controlling the pressure head 4 to turn off the vibration and controlling the roadbed block mold frame 2 to turn off the mold vibration.

[0077] In a preferred embodiment of the present invention, in order to better eliminate vacuum and eliminate aftershocks, in step 7, the motor speed of the mold vibration is 3000-3300 r / min, and the time for eliminating aftershocks is 1-3 seconds. When the present invention is implemented, the time for eliminating aftershocks is the same as the time for eliminating vacuum. For example, when step 7 is implemented, the motor speed of the mold vibration can be any one of 3000 r / min, 3100 r / min, 3200 r / min, and 3300 r / min, and the time for eliminating aftershocks can be set to any one of 1 second, 2 seconds, and 3 seconds. Of course, the present invention is not limited to the specific numerical values ​​listed above. When implemented, the motor speed of the mold vibration and the time for eliminating aftershocks can be adjusted within the corresponding motor speed range and time range according to actual needs.

[0078] In a preferred embodiment of the present invention, the control of the roadbed block mold frame 2 to demold the body includes: first controlling the telescopic cylinder 21 on the roadbed block mold frame 2 to drive the inner mold frame side plate to move outward, that is, first demolding the four sides of the roadbed block; then controlling the roadbed block mold frame 2 to rise as a whole, thereby realizing demolding and facilitating the output of the formed roadbed block.

[0079] In order to better understand the technical solution of the present invention, the molding machine 100 used in the molding method of the present invention is introduced below:

[0080] like Figures 2 to 7 As shown, the molding machine 100 includes:

[0081] The frame 5 includes a left half frame body 51 and a right half frame body 52 .

[0082] The material distributing trolley 1 is horizontally movable on the right half frame 52 through a movable track 11, and the movable track 11 extends to the left half frame 51; the material distributing trolley 1 is equipped with a pushing assembly 12, and the material distributing trolley 1 can move from the right half frame 52 to the left half frame 51 under the push of the pushing assembly 12; at the same time, a hopper 13 is provided on the right half frame 52, and the hopper 13 is above the material distributing trolley 1. When the material distributing trolley 1 is located in the right half frame 52, the hopper 13 is directly above the material distributing trolley 1, so that the material in the hopper 13 can be unloaded into the material distributing trolley 1; when the material distributing trolley 1 enters the left half frame 51 under the push of the pushing assembly 12, it can distribute material into the roadbed block mold frame 2.

[0083] The roadbed block mold frame 2 is movable up and down in the left half frame 51, and when the material is being laid, the roadbed block mold frame 2 is located directly below the material laying vehicle 1; the roadbed block mold frame 2 includes an outer mold frame 22 and an inner mold frame 23 sleeved in the outer mold frame 22, the inner mold frame 23 is surrounded by four inner mold frame side panels 231, and each of the inner mold frame side panels 231 is equipped with a telescopic oil cylinder 21 and two guide blocks 24, the telescopic oil cylinder 21 is fixed to the outer wall of the outer mold frame 22, and the telescopic end of the telescopic oil cylinder 21 is fixed to the outer wall of the outer mold frame 22. It passes through the outer mold frame 22 and is connected to the inner mold frame side plate 231, so that the telescopic cylinder 21 can be used to drive the inner mold frame side plate 231 to move inward to form a frame body or move outward for demoulding; the guide block 24 is arranged on both sides of the telescopic cylinder 21, and one end of the guide block 24 is fixedly connected to the outer wall of the inner mold frame side plate 231, and the other end of the guide block 24 is slidably assembled and connected to the outer mold frame 22. When the telescopic cylinder 21 drives the inner mold frame side plate 231 to move, the guide block 24 can guide the movement of the inner mold frame side plate 231.

[0084] The jacking mechanism 6 is provided on both sides of the left half frame 51, and the upper end of the jacking mechanism 6 is provided with an air bag pressing assembly 61. Both sides of the roadbed block mold frame 2 are pressed on the jacking mechanism 6 by the air bag pressing assembly 61, so that the jacking mechanism 6 can be used to drive the roadbed block mold frame 2 to rise or fall during operation, thereby realizing functions such as demoulding and molding; in the molding method of the present invention, the air bag pressure of the air bag pressing assembly 61 is controlled at 0.1-0.15MPa, so that the roadbed block mold frame 2 can be reliably pressed to ensure that the roadbed block mold frame 2 will not be separated from the air bag pressing assembly 61, and the roadbed block mold frame 2 can better generate mold vibration, thereby improving the quality of the molded roadbed block; it should be noted that the jacking mechanism 6 and the air bag pressing assembly 61 are mechanisms that need to be used in existing molding machines, and their specific structure and implementation principle are well known to those skilled in the art, and will not be introduced in detail here.

[0085] The vibration table 3 is arranged in the left half frame 51, and the vibration table 3 is located below the roadbed block mold frame 2. A support plate (not shown) is placed above the vibration table 3. During the process of laying and forming the materials, the bottom of the roadbed block mold frame 2 is attached to the upper surface of the support plate, so that the material in the roadbed block mold frame 2 can be vibrated and formed by the vibration table 3. In the present invention, the vibration table 3 includes a vibration table body 31, and a vibration box 32 is fixedly provided at the bottom of the vibration table body 31. Four eccentric block vibration assemblies 33 are arranged at equal intervals in the horizontal direction in the vibration box 32, and each of the eccentric block vibration assemblies 33 is connected to a vibration drive motor 34. The output end of the vibration drive motor 34 is directly connected to the eccentric block vibration assembly 33, so that each vibration drive motor 34 can independently drive an eccentric block vibration assembly 33 to perform the worktable vibration effect; wherein, the vibration table body 31, the eccentric block vibration assembly 33 and the vibration drive motor 34 are all mechanisms that need to be used in existing molding machines, and their specific structures and implementation principles are well known to those skilled in the art, so they will not be introduced in detail here; in the molding method of the present invention, when the vibration table 3 is turned on, the four vibration drive motors 34 drive the four eccentric block vibration assemblies 33 to work simultaneously to enhance the vibration effect, thereby helping to improve production efficiency.

[0086] The pressure head 4 is arranged in the left half frame 51, and the pressure head 4 is located above the roadbed block mold frame 2; a pressure head lifting mechanism 7 is fixedly provided at the bottom of the left half frame 51, and the pressure head lifting mechanism 7 is specifically driven by a hydraulic oil cylinder, and the movable end of the pressure head lifting mechanism 7 is connected to the pressure head 4, so that the pressure head 4 is driven to move up and down by the pressure head lifting mechanism 7, thereby realizing functions such as pressurization and demoulding; in the molding method of the present invention, when the pressure head 4 is suspended on the upper surface of the material, the oil cylinder solenoid valve is controlled to be continuously opened and closed, so that the pressure head 4 can It keeps sliding down under the action of its own weight; at the same time, two pressure head vibration motors (not shown) are provided on the pressure head 4. When the pressure head lifting mechanism 7 is controlled to drive the pressure head 4 to pressurize and shape the material, and after a preset delay time, the pressure head vibration motor is controlled to work, so that the pressure head 4 vibrates, thereby realizing the compaction of the material from the top of the roadbed block downwards; it should be noted that the pressure head 4 and the pressure head lifting mechanism 7 are both mechanisms that need to be used in existing forming machines, and their specific structures and implementation principles are well known to those skilled in the art, and will not be introduced in detail here.

[0087] The mold frame vibration assembly 8 is arranged on the outer wall of the roadbed block mold frame 2 near the two sides of the jacking mechanism 6, and each mold frame vibration assembly 8 is equipped with a mold vibration drive motor 81, the mold vibration drive motor 81 is connected to the mold frame vibration assembly 8 by a drive belt 82, and the mold vibration drive motor 81 is arranged on the left half of the frame 51; wherein, the mold frame vibration assembly 8 includes a vibration support seat 83 fixed to the outer wall of the roadbed block mold frame 2, a vibration support seat 83 rotatably arranged on the vibration support seat 83, and a vibration drive motor 81 provided on the left half of the frame 51. A driving shaft 84 and eccentric blocks 85 fixed at both ends of the driving shaft 84, wherein the end of the driving shaft 84 and the output end of the mold vibration driving motor 81 are both fixed with pulleys 86, and the driving belt 82 is connected between the two pulleys 86; in the molding method of the present invention, when the roadbed block mold frame 2 starts mold vibration, the two mold vibration driving motors 81 respectively drive the mold frame vibration components 8 on both sides of the roadbed block mold frame 2 to work, and the two mold frame vibration components 8 can be made to work asynchronously to improve the mold vibration effect of the roadbed block mold frame 2.

[0088] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for forming a roadbed block, characterized in that: The molding method comprises the following steps: ① When the material placing vehicle enters the top of the roadbed block mold frame to place the material, it controls the roadbed block mold frame to start mold vibration and controls the vibration table to start table vibration at the same time; ② After the material is placed, the material placing vehicle is controlled to leave the top of the roadbed block mold frame, the roadbed block mold frame is controlled to close the mold vibration, and the vibration table is controlled to close the table vibration; ③Suspend the pressure head on the upper surface of the material, control the roadbed block mold frame to start mold vibration and the vibration table to start table vibration, so that the pressure head is suspended and vibrates and continues to slide down by its own weight; ④ After the suspension vibration is completed, the roadbed block mold frame is controlled to maintain the original motor speed to continue the vibration, and the vibration table is controlled to increase the motor speed to continue the table vibration; ⑤ Control the pressure head to pressurize the material downward to form it, control the roadbed block mold frame to increase the motor speed to continue the mold vibration, and control the vibration table to maintain the original motor speed to continue the table vibration; and when the pressure head pressurizes the material to form it, control the pressure head to start vibration after a preset delay time; ⑥ Before the roadbed block is formed into place, the pressure head is controlled to shut down the vibration and the roadbed block mold frame is controlled to shut down the mold vibration; after the roadbed block is formed into place, the vibration table is controlled to turn to idle speed; ⑦ When the vibration table eliminates aftershocks, the roadbed block mold frame is controlled to start the mold vibration to eliminate the vacuum formed between the roadbed block and the roadbed block mold frame; after the vacuum elimination is completed, the roadbed block mold frame is controlled to close the mold vibration; ⑧Control the roadbed block mold frame for demoulding.

2. The method for forming a roadbed block according to claim 1, wherein: In step ①, the motor speed of the mold vibration is 1500-2000r / min, and the motor speed of the table vibration is 2500-3000r / min.

3. The method for forming a roadbed block according to claim 1, wherein: In step ③, the motor speed of the mold vibration is 2000-2200 r / min, the motor speed of the table vibration is 2700-3000 r / min, and the time of the mold vibration and table vibration is 5-10 seconds.

4. The method for forming a roadbed block according to claim 1, wherein: In step ③, when the pressure head is suspended on the upper surface of the material, the lower surface of the pressure head is pressed down 3-5 mm from the upper surface of the roadbed block mold frame; during the suspension vibration of the pressure head, the cylinder solenoid valve of the pressure head is continuously opened and closed, where the opening time is 0.1S and the closing time is 0.3S.

5. The method for forming a roadbed block according to claim 3, wherein: In step ④, the mold vibration maintains the original motor speed of 2000-2200r / min, and the table vibration is increased from the original 2700-3000r / min to 4000r / min.

6. A method for forming a roadbed block according to claim 5, characterized in that: In step ⑤, the pressure applied by the pressure head is 3.5MPa; the table vibration maintains the original motor speed of 4000r / min, the mold vibration is increased from the original 2000-2200r / min to 3000-3600r / min, and the mold vibration time is controlled at 1.5-2S; the delay preset time is 0.5-0.8S, and the time for the pressure head vibration to be turned on is 0.8-1.5S.

7. The method for forming a roadbed block according to claim 1, wherein: In step ⑥, the motor speed of the vibration table at idle speed is 500-800r / min.

8. The method for forming a roadbed block according to claim 1, wherein: In step ⑦, the motor speed of the vibration model is 3000-3300 r / min, and the time to eliminate aftershocks is 1-3 seconds.

9. The method for forming a roadbed block according to claim 1, wherein: The control of the roadbed block mold frame to demould the mold body includes: first controlling the telescopic oil cylinder on the roadbed block mold frame to drive the inner mold frame side plate to move outward, and then controlling the roadbed block mold frame to rise as a whole.

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