WO2024103539A1

WO2024103539A1 - Tamper head of block making machine and double-layer paving block making process

Info

Publication number: WO2024103539A1
Application number: PCT/CN2023/074901
Authority: WO
Inventors: 林阿勇; 徐金山; 林龙溪; 叶铭辉; 王锦木; 黄佳忠
Original assignee: 福建群峰机械有限公司
Priority date: 2022-11-16
Filing date: 2023-02-08
Publication date: 2024-05-23
Also published as: CN115871081A; CN115871081B

Abstract

Disclosed in the present invention are a tamper head of a block making machine and a double-layer paving block making process. The tamper head of a block making machine comprises a movable cross beam, a vibration cross beam, and a tamper head base. A plurality of locking assemblies, a plurality of elastic assemblies, and a plurality of limiting assemblies are provided between the movable cross beam and the vibration cross beam. The tamper head of a block making machine is pressed against a concrete material in the vibration process of a vibration mechanism, and the tamper head of a block making machine can move upwards to leave the surface of the concrete material temporarily due to a vibration force, so that the vibration mechanism vibrates without pressure, so as to uniformly distribute the concrete material. In addition, the tamper head of a block making machine presses the concrete material downwards under the action of the resilience force of the elastic assemblies, to make compact blocks. In the block making process, the tamper head of a block making machine is used to produce double-layer paving blocks, the tamper head of a block making machine limits the vibration amplitude of the vibration mechanism, so that a base material layer is prevented from moving up to a top material layer under vibration, thereby achieving cleanliness and aesthetics of the surface of the paving blocks. Moreover, the tamper head of a block making machine continuously impacts the top material layer as the compression and extension of the elastic assemblies, so that a higher bonding strength between the base material layer and the top material layer is achieved, thus achieving high compressive strength, flexural strength, wear resistance, and freeze-thaw resistance.

Description

Brick making machine pressure head and brick making process of double-layer pavement bricks

Technical Field

The invention relates to the technical field of brick making equipment, in particular to a brick making machine pressure head and a brick making process for double-layer pavement bricks.

Background technique

Brick making machine is a mechanical equipment for producing block bricks. It generally uses stone powder, fly ash, slag, slag, crushed stone, sand, water and other raw materials. It is made into block bricks through processes such as mixing, extruding brick blanks, drying, baking and sintering. In order to make the structure of the block bricks denser, a pressure head device is generally used to press the brick blanks into shape at one time. Now it is necessary to manufacture a pavement brick that is pressed into shape in two layers by two materials, base material and surface material. During the pressing and forming process, the base material is first arranged in the mold, and the brick making machine pressure head is used for one pressing. Then, the surface material is arranged on the basis of the base material, and then the brick making machine pressure head is used for a second pressing and forming. In the process of making pavement bricks, in order to make the concrete raw materials evenly distributed in the mold, a vibration mechanism is generally set under the mold to fully vibrate the concrete raw materials in the mold and evenly distribute them in the mold, and then the brick making machine pressure head is used to compact the concrete raw materials , making a brick body with strong structural strength; however, double-layer pavement bricks are prone to mixing the base material and the surface material during the vibration process, especially vibrating the base material onto the surface material layer, affecting the neatness and beauty of the surface of the pavement bricks; therefore, when making double-layer pavement bricks, the brick-making machine pressure head is pressed on the concrete raw material and the vibration mechanism is turned on for vibration work, the relative position of the brick-making machine pressure head and the mold is fixed, and the pressure of the brick-making machine pressure head pressing down on the concrete raw material will offset the vibration force of the vibration mechanism, which not only affects the vibration effect of the vibration mechanism, the concrete raw material cannot be evenly distributed in the mold, and the pressing effect of the brick-making machine pressure head will also be poor, resulting in insufficient bonding strength between the base material and the surface material layer, and the base material layer and the surface material layer are easy to separate; therefore, in the current brick-making process of double-layer pavement bricks, the working conditions of the brick-making machine pressure head and the vibration mechanism will affect the product quality of the made pavement bricks.

In view of this, the inventor has made in-depth considerations and actively researched, improved and tried to develop and design the present invention in order to solve the many deficiencies and inconveniences caused by the imperfect design of the brick making machine pressure head and brick making process structure.

technical problem

The purpose of the present invention is to provide a brick-making machine pressure head, which presses on concrete raw materials during the vibration process of the vibration mechanism, and an elastic component is arranged on the brick-making machine pressure head, so that the brick-making machine pressure head can move upwards under the vibration force and temporarily leave the surface of the concrete raw materials, so that the vibration mechanism can vibrate without pressure and the material is evenly distributed; and the brick-making machine pressure head presses the concrete raw materials downwards under the elastic restoring force of the elastic component, making bricks densely, thereby making the quality of the manufactured bricks better.

Another object of the present invention is to provide a brick-making process for double-layer pavement bricks. The double-layer pavement bricks are made using the above-mentioned brick-making machine pressure head. The brick-making machine pressure head limits the vibration amplitude of the vibration mechanism, and the base material will not vibrate onto the surface. The surface of the pavement bricks is neat and beautiful. Moreover, the brick-making machine pressure head is compressed and released by the elastic component to continuously impact the surface. The bonding strength between the base material and the surface is stronger, and the compression resistance, flexural resistance, wear resistance, and freeze-thaw resistance are all very good.

Technical Solutions

A brick-making machine pressure head, which includes a movable crossbeam, a vibrating crossbeam, and a pressure head seat movably locked under the vibrating crossbeam, wherein a locking component, an elastic component and a limiting component are arranged between the movable crossbeam and the vibrating crossbeam; one end of the locking component is locked with the movable crossbeam, and the other end is movably connected with the vibrating crossbeam, and the locking component limits the spacing between the movable crossbeam and the vibrating crossbeam to a maximum spacing; the limiting component is locked within the spacing between the movable crossbeam and the vibrating crossbeam, and the height of the limiting component limits the spacing between the movable crossbeam and the vibrating crossbeam to a minimum spacing; the top surface of the elastic component is locked with the movable crossbeam, and the bottom surface of the elastic component is locked with the vibrating crossbeam, and the maximum spacing is less than the height of the elastic component in the original state, and the elastic component remains in a compressed state; the minimum spacing is less than the height of the elastic component in the compressed state.

The height of the elastic component in the original state is 1-1.5 mm higher than the maximum spacing, and the height of the elastic component in the compressed state is 1 mm higher than the minimum spacing.

The height of the elastic component in the original state is 60 mm, the maximum spacing is 59 mm, and the minimum spacing is 58 mm.

The elastic component comprises an elastic rubber, a first bolt group connected to the movable crossbeam, and a second bolt group connected to the vibrating crossbeam, the top surface of the elastic rubber is provided with a first groove which is concave downward, and the bottom surface of the elastic rubber is provided with a second groove which is concave upward; the movable crossbeam is provided with a first countersunk hole, and the vibrating crossbeam is provided with a second countersunk hole; the first bolt group comprises a first bolt rod, a first nut and a first cap-shaped nut, the first cap-shaped nut is clamped in the first groove, the bottom end of the first bolt rod is locked with the first cap-shaped nut, and the top end of the first bolt rod is inserted into the first countersunk hole and locked with the first nut; the second bolt group comprises a second bolt and a second nut, the bolt head of the second bolt is clamped in the second groove, the second bolt is inserted into the second countersunk hole and locked with the second nut.

Vibration washers are respectively arranged on the top surface and the bottom surface of the elastic rubber; a first washer is arranged between the first nut and the movable cross beam, and a second washer is arranged between the second nut and the vibrating cross beam.

The limiting component is locked on the bottom surface of the movable cross beam, and there is a gap between the bottom surface of the limiting component and the top surface of the vibrating cross beam.

The limiting assembly comprises a limiting iron block, a third bolt and a third nut, the movable crossbeam is provided with a first through hole, and the limiting iron block is provided with a second through hole; the bolt head of the third bolt is locked to the bottom surface of the limiting iron block, the bolt rod of the third bolt passes through the second through hole and the first through hole and extends out of the top surface of the movable crossbeam and is locked with the third nut; the vibrating crossbeam is provided with a third through hole for the bolt head of the third bolt to move up and down.

A first spring washer is arranged between the bolt head of the third bolt and the limiting iron block, and a second spring washer is arranged between the third nut and the movable cross beam.

The locking assembly comprises a fourth bolt, a fourth nut and a fifth nut. The movable crossbeam is provided with a through hole, and the vibrating crossbeam is provided with a through countersunk hole. The bolt head of the fourth bolt is clamped at the bottom of the through countersunk hole, and the bolt rod of the fourth bolt passes through the through countersunk hole and the through hole and extends out of the top surface of the movable crossbeam to be locked with the fourth nut. The fifth nut is locked on the fourth bolt and presses against the bottom surface of the movable crossbeam.

A third spring washer is arranged between the bolt head of the fourth bolt and the vibration beam, a fourth spring washer is arranged between the fourth nut and the movable beam, and a fifth spring washer is arranged between the fifth nut and the movable beam.

The movable crossbeam and the vibrating crossbeam are rectangular in shape. The number of the elastic components is fourteen, with six groups arranged at intervals on the front and rear sides, and one group arranged at intervals on the left and right sides; the number of the limiting components is four groups, with two groups arranged at intervals on the front and rear sides, respectively; the number of the locking components is eight groups, with two groups arranged at intervals on the front and rear and left and right sides, respectively.

The elastic component, the limiting component and the locking component on the same side are located on the same straight line.

The locking assembly is arranged in the middle of each side and on both sides of the elastic assembly located in the middle; the limiting assembly is located on the inner side of the elastic assembly located at the end.

Multiple groups of tensioning components are arranged between the vibration beam and the pressure head seat, and the tensioning components have a single-section airbag, an airbag seat, a guide screw and a rubber connecting block. The airbag seat has a top plate, and a locking hole is respectively arranged at the two ends of the top plate; the top surface of the single-section airbag is locked with the top plate of the airbag seat, and the bottom surface of the single-section airbag is locked with the vibration beam; the vibration beam is provided with two through holes corresponding to the two locking holes, the top end of the guide screw is locked in the locking hole, the bottom end of the guide screw passes through the through hole and is locked with the rubber connecting block, and the top surface of the pressure head seat is provided with a slide rail for the rubber connecting block to slide and clamp.

The single-section airbag comprises an airbag body, a first connecting portion arranged on the top surface of the airbag body, and a second connecting portion arranged on the bottom surface of the airbag body; the first connecting portion is provided with two first screw holes, the top plate is provided with two first through holes, and the bolts pass through the first through holes and are locked in the first screw holes; the second connecting portion is provided with two second screw holes, the vibration beam is provided with two second through holes, and the bolts pass through the second through holes and are locked in the second screw holes.

The airbag body is provided with an inflation interface, the first connecting portion is provided with a gas passage connecting the inside of the airbag body and the inflation interface; and the top plate is provided with a top plate through hole for the inflation interface to extend out of the top plate.

The rubber connecting block is provided with a stepped countersunk hole, the guide screw has a sliding portion abutting against the top surface of the rubber connecting block and a locking portion extending into the stepped countersunk hole, and the locking portion of the guide screw penetrates into the stepped countersunk hole and is locked with the nut.

A groove ring is provided on the top surface of the rubber connecting block, a ring platform is formed between the inner ring of the groove ring and the stepped countersunk hole, the outer ring of the groove ring has a boss protruding from the bottom of the groove ring groove, and the height of the ring platform protruding from the groove ring is higher than the height of the boss protruding from the groove ring; and a rubber gasket is provided on the top surface of the rubber connecting block, the bottom surface of the rubber gasket is in contact with the groove ring, and the inner ring of the rubber gasket is in contact with the ring platform and the outer ring of the sliding part.

The guide bolt is provided with a supporting ring which is supported against the bottom surface of the top plate.

The airbag seat is provided with two support columns at both ends of the top plate, the two support columns at one end of the top plate are located on both sides of the guide screw, and the bottom ends of the support columns are supported on the vibration beam.

The top surface of the pressure head seat is provided with three parallel slide rails, and two sets of tensioning components are provided relative to each slide rail.

A brick making process for double-layer pavement bricks, using the brick making machine press head to make double-layer pavement bricks, comprises the following steps:

S1, base material unloading step: the base material vehicle moves to the top of the mold cavity and unloads the base material into the mold cavity;

S2, base material layer forming step: the brick making machine pressure head is pressed down on the base material, and the vibration mechanism is turned on; during the vibration of the vibration mechanism, the vibration beam is subjected to the vibration force of the vibration mechanism and the restoring force of the elastic component, and the brick making machine pressure head repeatedly moves upward or downward at a high frequency; the brick making machine pressure head is subjected to the vibration force of the vibration mechanism and moves upward away from the base material surface, so that the vibration mechanism vibrates without pressure, and the base material is evenly distributed; and the brick making machine pressure head is subjected to the elastic restoring force of the elastic component and moves downward to punch on the base material, so that the base material is denser and a base material layer is formed;

S3, the brick making machine pressure head rises to a predetermined position;

S4, fabric unloading step: the fabric cart moves to the top of the mold cavity and unloads the fabric to the top of the base material in the mold cavity;

S5. Double-layer pavement brick forming steps: the brick-making machine pressure head is pressed down on the fabric, and the vibration mechanism is turned on; during the vibration of the vibration mechanism, the vibration beam is subjected to the vibration force of the vibration mechanism and the restoring force of the elastic component, and the brick-making machine pressure head repeatedly moves upward or downward at a high frequency; the brick-making machine pressure head moves upward and away from the fabric surface due to the vibration force of the vibration mechanism, so that the vibration mechanism vibrates without pressure and the fabric is evenly distributed; and the brick-making machine pressure head moves downward due to the elastic restoring force of the elastic component and punches on the fabric, making the fabric denser, forming a fabric layer on the base material layer, and forming double-layer pavement bricks.

In the base material layer forming step or the double-layer pavement brick forming step, each time the brick-making machine pressure head moves upward, the vibration force of the vibration mechanism pushes the vibrating beam upward, the top surface of the vibrating beam abuts against the bottom surface of the limiting component, and the distance between the vibrating beam and the movable beam is reduced to the minimum distance; each time the brick-making machine pressure head moves downward, the restoring force of the elastic component pushes the vibrating beam downward, the bolt head of the fourth bolt abuts against the through countersunk hole of the vibrating beam, and the distance between the vibrating beam and the movable beam is increased to the maximum distance.

The elastic component is pre-compressed by 1 mm between the movable crossbeam and the vibrating crossbeam, and the difference between the maximum spacing and the minimum spacing is 1 mm.

In the base material layer forming step, the vibration frequency of the vibration mechanism is 50HZ.

In the double-layer pavement brick forming step, the vibration mechanism is divided into two sections with different vibration speeds, the first vibration section and the second vibration section, and the vibration time is 2S; the vibration frequency of the first vibration section is 60HZ, and the vibration time is 1.2S; the vibration frequency of the second vibration section is 70HZ, and the vibration time is 0.8S.

In the double-layer pavement brick forming step, the brick making machine pressure head performs a slight upward lifting action and then presses down on the surface material; the slight lifting time is 0.06-0.07S, and the number of slight liftings is one or two times.

In step S2, the brick making machine press forms a 5 mm hole on the base material in the mold cavity.

Beneficial Effects

After adopting the above structure, when the brick making machine pressure head of the present invention is working, the brick making machine pressure head presses down on the concrete raw material and turns on the vibration mechanism; during the vibration process of the vibration mechanism, the vibration beam is subjected to the vibration force of the vibration mechanism and the restoring force of the elastic component, and the brick making machine pressure head repeatedly moves upward or downward at a high frequency; wherein, when the brick making machine pressure head moves upward, the brick making machine pressure head is pushed upward by the vibration force of the vibration mechanism, the vibration beam moves upward and the top surface abuts against the bottom surface of the limit assembly, the distance between the vibration beam and the movable beam becomes smaller to the minimum distance, further compressing the elastic component; and the brick making machine pressure head leaves the surface of the concrete raw material, allowing the vibration beam to move upward. The movable mechanism vibrates without pressure, and the concrete raw materials are evenly distributed; when the brick making machine pressure head moves downward, the brick making machine pressure head is pushed downward by the elastic restoring force of the elastic component, the vibrating crossbeam moves downward and the distance between it and the movable crossbeam becomes larger to the maximum distance, the brick making machine pressure head continuously presses on the concrete raw materials, and the bricks are made denser; when making bricks, the brick making machine pressure head of the present invention simultaneously performs the step of uniformly distributing the concrete by the vibration mechanism and the step of densely making bricks by the brick making machine pressure head, which can not only compact the concrete raw materials and make the structural strength of the manufactured bricks stronger, but also does not affect the vibration effect of the vibration mechanism, the concrete raw materials are evenly distributed, and the quality of the manufactured bricks is better.

When the brick-making process of the double-layer pavement bricks of the present invention utilizes the above-mentioned brick-making machine pressure head to make double-layer pavement bricks, the brick-making machine pressure head is pressed down on the base material or the surface material, and the vibration mechanism is turned on; during the vibration of the vibration mechanism, the vibration beam is subjected to the vibration force of the vibration mechanism and the restoring force of the elastic component, and the brick-making machine pressure head repeatedly moves upward or downward at a high frequency; so that the brick-making machine pressure head can move upward under the vibration force and temporarily leave the surface of the concrete raw material, so that the vibration mechanism can vibrate without pressure and the material distribution is uniform; and the brick-making machine pressure head is subjected to the elastic restoring force of the elastic component to press the concrete raw material downward, compact the bricks, and thus make the quality of the manufactured bricks better; and the uniform material distribution step of the vibration mechanism and the compact brick making step of the brick-making machine pressure head are carried out simultaneously, which can effectively save the production time; especially when the surface material layer is formed on the base material layer, the brick-making machine pressure head limits the vibration amplitude of the vibration mechanism, the base material will not vibrate to the surface material, the surface of the pavement brick is neat and beautiful, and the brick-making machine pressure head is compressed and released by the elastic component to continuously impact the surface material, the base material and the surface material have a stronger bonding strength, and the compression resistance, folding resistance, wear resistance, and freeze-thaw resistance are all very good.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a brick making machine pressure head according to the present invention;

Fig. 2 is a front view schematic diagram of the brick making machine pressure head of the present invention;

FIG3 is a schematic side view of the brick making machine pressing head of the present invention;

FIG4 is a schematic top view of the pressing head of the brick making machine of the present invention;

Fig. 5 is a schematic cross-sectional view along the A-A direction in Fig. 4;

FIG6 is a partial enlarged view of FIG5;

Fig. 7 is a schematic cross-sectional view along the B-B direction in Fig. 4;

FIG8 is a partial enlarged view of FIG7;

FIG9 is an exploded schematic diagram of the tensioning assembly of the brick making machine pressure head of the present invention;

FIG10 is a schematic diagram of the assembly of the tensioning assembly of the brick-making machine pressure head of the present invention;

FIG11 is a schematic top view of the tensioning assembly of the brick making machine pressure head of the present invention;

Fig. 12 is a schematic cross-sectional view along the C-C direction in Fig. 11;

FIG13 is a schematic diagram of the structure of the brick making machine pressure head of the present invention applied to the brick making machine;

FIG. 14 is a front view schematic diagram of the brick-making machine pressure head of the present invention applied to the brick-making machine.

Symbol Description

Brick making machine pressure head 10; vibration mechanism 20; mold cavity 30; movable crossbeam 1; vibration crossbeam 2; pressure head seat 3; locking assembly 4; elastic assembly 5; limiting assembly 6; elastic rubber 51; first bolt group 52; second bolt group 53; first groove 511; second groove 512; first countersunk hole 11; second countersunk hole 21; first bolt rod 521, first nut 522; first cap nut 523; second bolt 531; second nut 532; vibration washer 513; limiting iron block 61; third bolt 62; third nut 63; first through hole 12; second through hole 611; third through hole 22; fourth bolt 41; fourth nut 4 2; fifth nut 43; through hole 13; through countersunk hole 23; tensioning assembly 7; single-section airbag 71; airbag seat 72; guide screw 73; rubber connecting block 74; top plate 721; locking hole 722; through hole 24; slide rail 31; airbag body 711; first connecting part 712; second connecting part 713; first screw hole 7121; first through hole 7211; bolt 8; second screw hole 7131; second through hole 25; inflation interface 714; stepped countersunk hole 741; sliding part 731; locking part 732; groove ring 742; ring platform 743; boss 744; rubber gasket 75; top ring 733; support column 723.

Best Mode for Carrying Out the Invention

In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

Please refer to Figures 1 to 14. The present invention discloses a brick-making machine pressure head 10, which includes a movable crossbeam 1, a vibrating crossbeam 2, and a pressure head seat 3 movably locked under the vibrating crossbeam 2, and a locking component 4, an elastic component 5 and a limiting component 6 are arranged between the movable crossbeam 1 and the vibrating crossbeam 2; one end of the locking component 4 is locked with the movable crossbeam 1, and the other end is movably connected with the vibrating crossbeam 2, and the locking component 4 limits the spacing between the movable crossbeam 1 and the vibrating crossbeam 2 to a maximum spacing; the limiting component 6 is locked within the spacing between the movable crossbeam 1 and the vibrating crossbeam 2, and the height of the limiting component 6 limits the spacing between the movable crossbeam 1 and the vibrating crossbeam 2 to a minimum spacing; the top surface of the elastic component 5 is locked with the movable crossbeam 1, the bottom surface of the elastic component 5 is locked with the vibrating crossbeam 2, and the maximum spacing is less than the height of the elastic component 5 in the original state, and the elastic component 5 remains in a compressed state; the minimum spacing is less than the height of the elastic component 5 in the compressed state.

When the brick-making machine pressure head 10 of the present invention is working, the brick-making machine pressure head 10 is pressed down on the concrete raw material, and the vibration mechanism 20 is turned on; during the vibration process of the vibration mechanism 20, the vibration beam 2 is subjected to the vibration force of the vibration mechanism 20 and the restoring force of the elastic component 5, and the brick-making machine pressure head 10 repeatedly moves upward or downward at a high frequency; wherein, when the brick-making machine pressure head 10 moves upward, the brick-making machine pressure head 10 is pushed upward by the vibration force of the vibration mechanism 20, the vibration beam 2 moves upward and the top surface abuts against the bottom surface of the limit component 6, the distance between the vibration beam 2 and the movable beam 1 becomes smaller to the minimum distance, further compressing the elastic component 5; and the brick-making machine pressure head 10 leaves the surface of the concrete raw material, allowing the vibration beam 2 to move upward. The movable mechanism 20 vibrates without pressure, and the concrete raw materials are evenly distributed; when the brick making machine pressure head 10 moves downward, the brick making machine pressure head 10 is pushed downward by the elastic restoring force of the elastic component 5, the vibrating beam 2 moves downward and the distance between it and the movable beam 1 becomes larger than the maximum distance, and the brick making machine pressure head 10 continuously presses on the concrete raw materials, making the bricks denser; when the brick making machine pressure head 10 of the present invention makes bricks, the vibrating mechanism 20 vibrates the uniform distribution step and the brick making step of the brick making machine pressure head 10 is carried out simultaneously, which can not only compact the concrete raw materials and make the structural strength of the manufactured bricks stronger, but also does not affect the vibration effect of the vibrating mechanism 20, the concrete raw materials are evenly distributed, and the quality of the manufactured bricks is better.

The height of the elastic component 5 in the original state of the present invention is 1-1.5mm higher than the maximum spacing, and the height of the elastic component 5 in the compressed state is 1mm higher than the minimum spacing; the elastic component 5 is pre-compressed by 1-1.5mm between the movable beam 1 and the vibrating beam 2, and the difference between the maximum spacing and the minimum spacing is 1mm, so the distance that the brick-making machine pressure head 10 moves upward or downward is less than or equal to 1mm; the brick-making machine pressure head 10 moves upward by 1mm and will not be too far away from the surface of the concrete raw material, which not only allows the vibration mechanism 20 to vibrate without pressure, but also the brick-making machine pressure head 10 can prevent the concrete raw material from splashing upward due to the vibration force, and the material distribution is more uniform; and the brick-making machine pressure head 10 moves downward by 1mm, directly and continuously stamping on the surface of the concrete raw material, so that the structural strength of the brick surface is stronger.

The height of the elastic component 5 in the original state of the present invention is 60 mm, the maximum spacing is 59 mm, and the minimum spacing is 58 mm, that is, the height of the limit component 6 is 58 mm; the elastic component 5 is pre-compressed by 1 mm between the vibrating beam 2 and the movable beam 1, and when the vibrating beam 2 moves upward, the elastic component 5 is compressed by 2 mm under the action of both the vibrating beam 2 and the movable beam 1. Therefore, when the vibrating beam 2 moves downward, the elastic restoring force of the elastic component 5 is the elastic restoring force when the elastic component 5 is compressed by 2 mm. The pressure of the brick-making machine pressure head 10 stamped onto the concrete raw material is relatively large, so that the structural strength of the bricks is stronger, and the compression resistance, flexural resistance, wear resistance, and freeze-thaw resistance are all good.

The elastic component 5 of the present invention comprises an elastic rubber 51, a first bolt group 52 assembled with the movable crossbeam 1, and a second bolt group 53 assembled with the vibrating crossbeam 2, the top surface of the elastic rubber 51 is provided with a first groove 511 which is concave downward, and the bottom surface of the elastic rubber 51 is provided with a second groove 512 which is concave upward; the movable crossbeam 1 is provided with a first countersunk hole 11, and the vibrating crossbeam 2 is provided with a second countersunk hole 21; the first bolt group 52 comprises a first bolt rod 521, a first nut 522 and a first cap nut 523, the first cap nut 523 is clamped in the first groove 511, the bottom end of the first bolt rod 521 is locked with the first cap nut 523, and the top end of the first bolt rod 521 penetrates into the first countersunk hole 11 and is locked with the first nut 522; the second bolt group 53 comprises a second bolt 531 and a second nut 532, the second bolt 531 The bolt head is clamped in the second groove 512, and the second bolt 531 is inserted into the second countersunk hole 21 and locked with the second nut 532; the upper and lower ends of the elastic component 5 are respectively locked with the movable beam 1 and the vibrating beam 5, and the maximum distance between the movable beam 1 and the vibrating beam 2 is less than the height of the elastic rubber 51 in the original state, so that the elastic rubber 51 always remains in a compressed state, and when the vibrating beam 2 is only subjected to the elastic restoring force of the elastic rubber 51, the movable beam 1 and the vibrating beam 2 remain in the maximum distance state; therefore, when the vibrating beam 2 moves upward under the vibration force of the vibration mechanism 20, the distance between the movable beam 1 and the vibrating beam 2 becomes the minimum distance, further compressing the elastic rubber 51, enhancing the elastic restoring force of the elastic rubber 51, and then using the elastic restoring force to push the brick making machine pressure head 10 to impact the concrete raw materials, so that the brick structure strength is stronger.

The top and bottom surfaces of the elastic rubber 51 of the present invention are respectively provided with vibration washers 513. When the elastic rubber 51 is compressed, the vibration washers 513 can transfer the force applied by the movable beam 1 and the vibration beam 2 to the elastic rubber 51, so that the elastic rubber 51 is evenly compressed or released; a first washer is provided between the first nut 522 and the movable beam 1, and a second washer is provided between the second nut 532 and the vibration beam 2.

The limiting assembly 6 of the present invention is locked to the bottom surface of the movable beam 1, and there is a gap between the bottom surface of the limiting assembly 6 and the top surface of the vibrating beam 2; the minimum distance between the movable beam 1 and the vibrating beam 2 is limited by the limiting assembly 6, that is, the vibrating beam 2 can move upward until the top surface of the vibrating beam 2 presses against the bottom surface of the limiting assembly 6, thereby controlling the upward movement distance of the brick making machine pressure head 10, avoiding the brick making machine pressure head 10 being too high from the surface of the concrete raw material, which may easily vibrate the concrete raw material upward when the vibration mechanism 20 vibrates, resulting in poor vibration effect.

The limiting assembly 6 of the present invention comprises a limiting iron block 61, a third bolt 62 and a third nut 63, the movable beam 1 is provided with a first through hole 12, and the limiting iron block 61 is provided with a second through hole 611; the bolt head of the third bolt 62 is locked to the bottom surface of the limiting iron block 61, the bolt rod of the third bolt 62 passes through the second through hole 611 and the first through hole 12 and extends out of the top surface of the movable beam 1 and is locked with the third nut 63, so that the limiting iron block 61 can be firmly locked to the bottom surface of the movable beam 1; the vibration beam 2 is provided with a third through hole 22 for the bolt head of the third bolt 62 to move up and down, when the vibration beam 2 moves up and down, the third through hole 22 provides a space for the bolt head to make way, so as to avoid the bolt head blocking the up and down movement of the vibration beam 2, so that the vibration beam 2 can move up and down smoothly.

In the present invention, a first spring washer is arranged between the bolt head of the third bolt 62 and the limiting iron block 61 , and a second spring washer is arranged between the third nut 63 and the movable cross beam 1 .

The locking assembly 4 of the present invention comprises a fourth bolt 41, a fourth nut 42 and a fifth nut 43, the movable crossbeam 1 is provided with a through hole 13, and the vibrating crossbeam 2 is provided with a through countersunk hole 23; the bolt head of the fourth bolt 41 is clamped at the bottom of the through countersunk hole 23, the bolt rod of the fourth bolt 41 passes through the through countersunk hole 23 and the through hole 13 and extends out of the top surface of the movable crossbeam 1 to be locked with the fourth nut 42, the fifth nut 43 is locked on the fourth bolt 41 and abuts against the bottom surface of the movable crossbeam 1; the fourth bolt 41 and the movable crossbeam 1 are fixedly locked together, and the vibrating crossbeam 2 can move up and down on the fourth bolt 41; when the vibrating crossbeam 2 is subjected to the vibration mechanism When the vibration force of 20 pushes it to move upward, the top surface of the vibration beam 2 abuts against the bottom surface of the limiting iron block 61, the bolt head of the fourth bolt 41 does not tightly abut against the through countersunk hole 23, the distance between the movable beam 1 and the vibration beam 2 is the minimum distance, and the elastic rubber 51 is further compressed; the vibration beam 2 is pushed downward by the elastic restoring force of the elastic component 5, and there is a distance between the top surface of the vibration beam 2 and the bottom surface of the limiting iron block 61, the bolt head of the fourth bolt 41 tightly abuts against the through countersunk hole 23, the distance between the movable beam 1 and the vibration beam 2 is the maximum distance, and the brick making machine pressure head 10 impacts the concrete raw materials downward to make dense bricks.

In the present invention, a third spring washer is arranged between the bolt head of the fourth bolt 41 and the vibration beam 2 , a fourth spring washer is arranged between the fourth nut 42 and the movable beam 1 , and a fifth spring washer is arranged between the fifth nut 43 and the movable beam 1 .

The movable crossbeam 1 and the vibrating crossbeam 2 of the present invention are rectangular in shape, and the elastic components 5 are arranged in fourteen groups, with six groups arranged at intervals on the front and rear sides, and one group arranged on the left and right sides; the limiting components 6 are arranged in four groups, with two groups arranged at intervals on the front and rear sides, respectively; the locking components 4 are arranged in eight groups, with two groups arranged at intervals on the front and rear and left and right sides, respectively; the number and positions of the elastic components 5, the limiting components 6, and the locking components 4 can allow the vibrating crossbeam 2 to maintain a horizontal state when moving up and down, and the surface of the manufactured bricks is smoother.

The elastic component 5, the limiting component 6 and the locking component 4 on the same side of the present invention are located on the same straight line, so that the vibration force and the elastic restoring force on the vibration beam 2 are in the same direction, ensuring that the vibration beam 2 is evenly stressed and can move horizontally up and down.

The locking assembly 4 of the present invention is arranged in the middle of each side and on both sides of the elastic assembly 5 located in the middle; the limiting assembly 6 is located on the inner side of the elastic assembly 5 located at the end.

A plurality of tensioning assemblies 7 are arranged between the vibration beam 2 and the pressure head seat 3 of the present invention, and the tensioning assemblies 7 include a single-section airbag 71, an airbag seat 72, a guide screw 73 and a rubber connecting block 74. The airbag seat 72 has a top plate 721, and a locking hole 722 is respectively arranged at the two ends of the top plate 721; the top surface of the single-section airbag 71 is locked with the top plate 721 of the airbag seat 72, and the bottom surface of the single-section airbag 71 is locked with the vibration beam 2; the vibration beam 2 is provided with two through holes 24 corresponding to the two locking holes 722, the top end of the guide screw 73 is locked in the locking hole 722, the bottom end of the guide screw 73 passes through the through hole 24 and is locked with the rubber connecting block 74, and the top surface of the pressure head seat 3 is provided with a slide rail 31 for the rubber connecting block 74 to slide and clamp; when the single-section airbag 71 is inflated, the single-section airbag 71 bulges When the locking cam 73 is in the state of being deflated, the locking cam 73 contracts and pulls the top plate 721 downward, thereby reducing the space between the locking cam 73 and the support cam 71. When the locking cam 73 is in the state of being deflated, the locking cam 73 shrinks and pulls the top plate 721 downward, thereby reducing the space between the top plate 721 and the support cam 71.

The single-section airbag 71 of the present invention comprises an airbag body 711, a first connecting portion 712 disposed on the top surface of the airbag body 711, and a second connecting portion 713 disposed on the bottom surface of the airbag body 711; the first connecting portion 712 is provided with two first screw holes 7121, the top plate 721 is provided with two first through holes 7211, and bolts pass through the first through holes 7211 and are locked in the first screw holes 7121; the second connecting portion 713 is provided with two second screw holes 7121 131, the vibration beam 2 is provided with two second through holes 25, and the bolts pass through the second through holes 25 and are locked in the second screw holes 7131; the single-section airbag 71 is locked between the top plate 721 of the airbag seat 72 and the vibration beam 2, and the distance between the top plate 721 and the vibration beam 2 is controlled by inflating or deflating the single-section airbag 71, thereby driving the guide screw 73 to pull the rubber connecting block 74 to determine whether it is clamped on the slide rail 31, so as to facilitate the assembly or disassembly of the pressure head seat 3 on the vibration beam 2.

The airbag body 711 of the present invention is provided with an inflation interface 714, and the first connecting portion 712 is provided with a gas channel connecting the interior of the airbag body 711 and the inflation interface 714; and the top plate 721 is provided with a top plate through hole 7212 for the inflation interface 714 to extend out from the top of the top plate 721; the inflation interface 714 is connected to the inflation equipment to inflate or deflate the airbag body 711.

The rubber connecting block 74 of the present invention is provided with a stepped countersunk hole 741, and the guide screw 73 has a sliding portion 731 that abuts against the top surface of the rubber connecting block 74 and a locking portion 732 that extends into the stepped countersunk hole 741. The locking portion 732 of the guide screw 73 penetrates into the stepped countersunk hole 741 and is locked with a nut, and the sliding portion 731 abuts against the top surface of the rubber connecting block 74, and the nut abuts against the stepped countersunk hole 741, so that the rubber connecting block 74 can be firmly fixed to the bottom end of the guide screw 73.

The top surface of the rubber connection block 74 of the present invention is provided with a groove ring 742, and a ring platform 743 is formed between the inner ring of the groove ring 742 and the stepped countersunk hole 741. The outer ring of the groove ring 742 has a boss 744 protruding from the bottom of the groove of the groove ring 742, and the height of the boss 743 protruding from the groove ring 742 is higher than the height of the boss 744 protruding from the groove ring 742; and the top surface of the rubber connection block 74 is provided with a rubber gasket 75, and the rubber gasket 75 has a The bottom surface is against the groove ring 742, and the inner ring of the rubber gasket 75 is against the outer ring of the ring platform 743 and the sliding part 731; the rubber gasket 75 is firmly clamped on the top surface of the rubber connecting block 74. When the tensioning assembly 7 tightens the rubber connecting block 74 and fixes it tightly in the slide rail 31, the rubber gasket 75 can play a buffering role, and the elastic restoring force of the rubber gasket 75 can appropriately make the rubber connecting block 74 more clamped in the slide rail 31, and the connection structure between the pressure head seat 3 and the vibration beam 2 is more secure.

The guide bolt 73 of the present invention is provided with a resisting ring 733 which resists against the bottom surface of the top plate 721 . The resisting ring 733 can facilitate the top plate 721 to push the guide screw 73 to move downward.

The airbag seat 72 of the present invention is respectively provided with two support columns 723 at both ends of the top plate 721. The two support columns 723 located at one end of the top plate 721 are located on both sides of the guide screw 73, and the bottom ends of the support columns 723 are supported on the vibration beam 2; the support columns 723 support the airbag seat 72 above the vibration beam 2, and can limit the distance between the top plate 721 and the vibration beam 2, thereby avoiding the situation where the gravity of the top plate 721 directly presses on the airbag body 711 when the airbag body 711 is in a deflated state, thereby causing damage to the airbag body 711.

The top surface of the pressure head seat 3 of the present invention is provided with three parallel sliding rails 31, and two groups of tensioning assemblies 7 are provided relative to each sliding rail 31; the three sliding rails 31 and the six groups of tensioning assemblies 7 cooperate with each other to facilitate the assembly and disassembly of the pressure head seat 3 and the vibration beam 2.

The present invention also discloses a brick making process for double-layer pavement bricks. The double-layer pavement bricks are made by using the brick making machine press head 10, and the steps are as follows:

S1, base material unloading step: the base material vehicle moves to the top of the mold cavity 30 and unloads the base material into the mold cavity 30;

S2, base material layer forming step: the brick making machine pressure head 10 is pressed down on the base material, and the vibration mechanism 20 is turned on; during the vibration of the vibration mechanism 20, the vibration beam 2 is subjected to the vibration force of the vibration mechanism 20 and the restoring force of the elastic component 5, and the brick making machine pressure head 10 repeatedly moves upward or downward at a high frequency; the brick making machine pressure head 10 is subjected to the vibration force of the vibration mechanism 20 to move upward and leave the base material surface, so that the vibration mechanism 20 vibrates without pressure, and the base material is evenly distributed; and the brick making machine pressure head 10 is subjected to the elastic restoring force of the elastic component 5 to move downward and punch on the base material, so that the base material is denser and a base material layer is formed;

S3, the brick making machine pressure head 10 rises to a predetermined position;

S4, fabric unloading step: the fabric cart moves to the top of the mold cavity 30 and unloads the fabric to the top of the base material in the mold cavity 30;

S5, double-layer pavement brick forming steps: the brick-making machine pressure head 10 is pressed down on the fabric, and the vibration mechanism 20 is turned on; during the vibration of the vibration mechanism 20, the vibration beam 2 is subjected to the vibration force of the vibration mechanism 20 and the restoring force of the elastic component 5, and the brick-making machine pressure head 10 repeatedly moves upward or downward at a high frequency; the brick-making machine pressure head 10 moves upward and away from the fabric surface under the vibration force of the vibration mechanism 20, so that the vibration mechanism 20 vibrates without pressure, and the fabric is evenly distributed; and the brick-making machine pressure head 10 moves downward under the elastic restoring force of the elastic component 5 and punches on the fabric, so that the fabric is denser, and a fabric layer is formed on the base material layer to form a double-layer pavement brick.

The brick-making process of the double-layer pavement brick of the present invention is that when making double-layer pavement bricks, the brick-making machine pressure head 10 is pressed down on the base material or the fabric, and the vibration mechanism 20 is turned on; during the vibration of the vibration mechanism 20, the vibration beam is subjected to the vibration force of the vibration mechanism 20 and the restoring force of the elastic component 5, and the brick-making machine pressure head 10 repeatedly moves upward or downward at a high frequency; the brick-making machine pressure head 10 allows the vibration mechanism 20 to vibrate without pressure, and the material is evenly distributed; and the brick-making machine pressure head 10 limits the vibration amplitude of the vibration mechanism 20, the base material will not vibrate to the fabric, the surface of the pavement brick is neat and beautiful, and the brick-making machine pressure head 10 is compressed and released by the elastic component 5 to continuously impact the fabric, the base material and the fabric have a stronger bonding strength, and the compression resistance, folding resistance, wear resistance, and freeze-thaw resistance are all very good; wherein, when the brick-making machine pressure head 10 moves upward, the brick-making machine pressure head 10 is pushed upward by the vibration force of the vibration mechanism 20, the vibration beam 2 moves upward and the top surface abuts against the bottom surface of the limit assembly 6, and the vibration beam 2 and the movable beam 1 are spaced apart. The distance becomes smaller to the minimum distance, further compressing the elastic component; and the brick-making machine pressure head 10 leaves the surface of the base material or the fabric, allowing the vibration mechanism 20 to vibrate without pressure and evenly distribute the material; when the brick-making machine pressure head 10 moves downward, the brick-making machine pressure head 10 is pushed downward by the elastic restoring force of the elastic component 5, the vibration beam 2 moves downward and the distance between it and the movable beam 1 becomes larger to the maximum distance, and the brick-making machine pressure head 10 continuously punches on the base material or the fabric, making the bricks more dense; and in the brick-making process of the double-layer pavement bricks of the present invention, the step of vibrating the vibration mechanism 20 to evenly distribute the material and the step of compacting the bricks by the brick-making machine pressure head 10 are carried out simultaneously, which can effectively save the production time; especially when the fabric layer is formed on the base material layer, the brick-making machine pressure head 10 limits the vibration amplitude of the vibration mechanism 20, the base material will not vibrate to the fabric, the surface of the pavement brick is neat and beautiful, and the brick-making machine pressure head 10 is compressed and released by the elastic component to continuously impact the fabric, the base material and the fabric have stronger bonding strength, and the pressure resistance, folding resistance, wear resistance, and freeze-thaw resistance are all very good.

In the base material layer forming step or the double-layer pavement brick forming step of the present invention, each time the brick-making machine pressure head 10 moves upward, the vibration force of the vibration mechanism 20 pushes the vibration beam 2 to move upward, the top surface of the vibration beam 2 abuts against the bottom surface of the limit assembly 6, and the distance between the vibration beam 2 and the movable beam 1 is reduced to the minimum distance; each time the brick-making machine pressure head 10 moves downward, the restoring force of the elastic assembly 5 pushes the vibration beam 2 to move downward, the bolt head of the fourth bolt 42 abuts against the through countersunk hole 23 of the vibration beam 2, and the distance between the vibration beam 2 and the movable beam 1 is increased to the maximum distance; in the brick-making process, the distance between the movable beam 1 and the vibration beam 2 changes with the longitudinal compression and release of the elastic rubber 51, and continuously changes from the maximum distance to the minimum distance, and the brick-making machine pressure head 10 impacts the fabric at a high frequency, so that the fabric and the base material are firmly combined, and the structural strength of the double-layer pavement bricks is better.

The elastic component 5 of the present invention is pre-compressed 1-1.5mm between the movable beam 1 and the vibrating beam 5, and the difference between the maximum spacing and the minimum spacing is 1mm; the height of the elastic component 5 in the original state is 1-1.5mm higher than the maximum spacing, and the height of the elastic component 5 in the compressed state is 1mm higher than the minimum spacing; therefore, the distance that the brick-making machine pressure head 10 moves upward or downward is less than or equal to 1mm; the brick-making machine pressure head 10 moves upward by 1mm and will not be too far away from the surface of the fabric, which not only allows the vibration mechanism 20 to vibrate without pressure, but also allows the fabric and base material to fully run and evenly distribute the fabric; and the brick-making machine pressure head 10 is far away from the fabric, which can prevent the fabric and base material from running excessively and prevent the base material from vibrating onto the fabric, making the appearance of the double-layer pavement bricks neater; and the brick-making machine pressure head 10 moves downward by 1mm, directly and continuously stamping on the surface of the concrete raw material, making the structural strength of the brick surface stronger.

The height of the elastic component 5 of the present invention in the original state is 60mm, the maximum spacing is 59mm, and the minimum spacing is 58mm; the elastic component 5 is pre-compressed by 1mm between the vibrating beam 2 and the movable beam 1. When the vibrating beam 2 moves upward, the elastic component 5 is compressed by 2mm under the action of both the vibrating beam 2 and the movable beam 1. Therefore, when the vibrating beam 2 moves downward, the elastic restoring force of the elastic component 5 is the elastic restoring force when the elastic component 5 is compressed by 2mm. The pressure of the brick-making machine pressure head 10 stamped onto the concrete raw material is relatively large, so that the structural strength of the bricks is stronger, and the compression resistance, flexural resistance, wear resistance, and freeze-thaw resistance are all good.

In the base material layer forming step of the present invention, the vibration frequency of the vibration mechanism 20 is 50HZ; the vibration amplitude of the vibration mechanism 20 cannot be too large, and the vibration force compresses the elastic component 5 to the minimum spacing, that is, the vibration beam 2 is against the bottom surface of the limiting iron block 61, and the spacing between the movable beam 1 and the vibration beam 2 is the minimum spacing; and the elastic restoring force of the elastic component 5 expands the movable beam 1 and the vibration beam 2 to the maximum spacing, so that the brick making machine pressure head 10 continuously impacts the base material, and the material is evenly distributed and dense bricks are made.

In the double-layer pavement brick forming step of the present invention, the vibration mechanism 20 is divided into a first vibration section and a second vibration section with two different vibration speeds, and the vibration time is 2S; the vibration frequency of the first vibration section is 60HZ, and the vibration time is 1.2S; the vibration frequency of the second vibration section is 70HZ, and the vibration time is 0.8S; the vibration effect of the two sections with different vibration frequencies can allow the base material and the surface material to fully run in the mold cavity 30, and the material is evenly distributed and the bricks are made densely.

In the double-layer pavement brick forming step of the present invention, the brick making machine pressure head 10 performs a slight upward lifting action, and then presses down on the surface material; wherein, the slight lifting time is 0.06-0.07S, and the number of slight liftings is one or two times; the slight lifting of the brick making machine pressure head 10 can allow the concrete raw materials to fully run in the mold frame to fill the gaps, allowing the raw materials in the mold cavity 30 to be quickly formed, and the mold frame releases a greater exciting force, the material distribution is uniform, and the bricks are densely made; if the brick making machine pressure head 10 does not perform a slight lifting action, the vibration frequency of the brick making machine pressure head 10 pressing the brick mold frame cannot be increased, so that the raw materials cannot run fully, resulting in the surface layer being easily separated from the bottom material, the bonding strength is insufficient, and the surface layer itself is insufficient in strength after curing, and the wear resistance is poor, and the pressure head plate is prone to the surface layer sticking to the upper surface. After the late curing of the overall face brick is completed, the compression resistance, flexural resistance, wear resistance, and freeze-thaw resistance are very poor.

In step S2 of the present invention, the brick making machine pressing head 10 forms a 5 mm hole on the base material in the mold cavity 30, so as to make the bonding strength between the base material and the surface material stronger.

The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

A brick-making machine pressure head, characterized in that it includes a movable crossbeam, a vibrating crossbeam, and a pressure head seat movably locked under the vibrating crossbeam, and a locking component, an elastic component and a limiting component are arranged between the movable crossbeam and the vibrating crossbeam; one end of the locking component is locked with the movable crossbeam, and the other end is movably connected with the vibrating crossbeam, and the locking component limits the spacing between the movable crossbeam and the vibrating crossbeam to a maximum spacing; the limiting component is locked within the spacing between the movable crossbeam and the vibrating crossbeam, and the height of the limiting component limits the spacing between the movable crossbeam and the vibrating crossbeam to a minimum spacing; the top surface of the elastic component is locked with the movable crossbeam, and the bottom surface of the elastic component is locked with the vibrating crossbeam, and the maximum spacing is less than the height of the elastic component in the original state, and the elastic component remains in a compressed state; the minimum spacing is less than the height of the elastic component in the compressed state.
The brick-making machine pressure head as described in claim 1 is characterized in that the height of the elastic component in the original state is 1-1.5 mm higher than the maximum spacing, and the height of the elastic component in the compressed state is 1 mm higher than the minimum spacing.
The brick-making machine pressure head as described in claim 2 is characterized in that the height of the elastic component in the original state is 60 mm, the maximum spacing is 59 mm, and the minimum spacing is 58 mm.
The brick-making machine pressure head as described in claim 1 is characterized in that: the elastic component comprises an elastic rubber, a first bolt group connected to the movable crossbeam, and a second bolt group connected to the vibrating crossbeam, the top surface of the elastic rubber is provided with a first groove which is concave downward, and the bottom surface of the elastic rubber is provided with a second groove which is concave upward; the movable crossbeam is provided with a first countersunk hole, and the vibrating crossbeam is provided with a second countersunk hole; the first bolt group comprises a first bolt rod, a first nut and a first cap-shaped nut, the first cap-shaped nut is clamped in the first groove, the bottom end of the first bolt rod is locked with the first cap-shaped nut, and the top end of the first bolt rod is inserted into the first countersunk hole and locked with the first nut; the second bolt group comprises a second bolt and a second nut, the bolt head of the second bolt is clamped in the second groove, the second bolt is inserted into the second countersunk hole and locked with the second nut.
The brick-making machine pressure head as described in claim 4 is characterized in that: vibration washers are respectively provided on the top and bottom surfaces of the elastic rubber; a first washer is provided between the first nut and the movable beam, and a second washer is provided between the second nut and the vibrating beam.
The brick-making machine pressure head as described in claim 1 is characterized in that: the limiting component is locked to the bottom surface of the movable beam, and there is a gap between the bottom surface of the limiting component and the top surface of the vibrating beam.
The brick-making machine pressure head as described in claim 6 is characterized in that: the limiting assembly has a limiting iron block, a third bolt and a third nut, the movable beam is provided with a first through hole, and the limiting iron block is provided with a second through hole; the bolt head of the third bolt is locked to the bottom surface of the limiting iron block, the bolt rod of the third bolt passes through the second through hole and the first through hole and extends out of the top surface of the movable beam and is locked with the third nut; the vibrating beam is provided with a third through hole for the bolt head of the third bolt to move up and down.
The brick-making machine pressure head as described in claim 1 is characterized in that: the locking assembly has a fourth bolt, a fourth nut and a fifth nut, the movable beam is provided with a through hole, and the vibrating beam is provided with a through countersunk hole; the bolt head of the fourth bolt is clamped at the bottom of the through countersunk hole, the bolt rod of the fourth bolt passes through the through countersunk hole and the through hole and extends out of the top surface of the movable beam to be locked with the fourth nut, and the fifth nut is locked on the fourth bolt and presses against the bottom surface of the movable beam.
The brick making machine pressure head as described in claim 8 is characterized in that a third spring washer is arranged between the bolt head of the fourth bolt and the vibrating beam, a fourth spring washer is arranged between the fourth nut and the movable beam, and a fifth spring washer is arranged between the fifth nut and the movable beam.
The brick-making machine pressure head as described in claim 1 is characterized in that: the movable beam and the vibrating beam are rectangular, the number of the elastic components is fourteen, six groups are arranged at intervals on the front and rear sides, and one group is arranged on the left and right sides; the number of the limit components is four groups, two groups are arranged at intervals on the front and rear sides, and eight groups are arranged at intervals on the front and rear sides and the left and right sides.
The brick-making machine pressure head as described in claim 10 is characterized in that the elastic component, the limit component and the locking component on the same side are located on the same straight line.
The brick-making machine pressure head as described in claim 1 is characterized in that: multiple groups of tensioning components are arranged between the vibrating beam and the pressure head seat, and the tensioning components have a single-section airbag, an airbag seat, a guide screw and a rubber connecting block, the airbag seat has a top plate, and a locking hole is respectively arranged at the two ends of the top plate; the top surface of the single-section airbag is locked with the top plate of the airbag seat, and the bottom surface of the single-section airbag is locked with the vibrating beam; the vibrating beam is provided with two through holes corresponding to the two locking holes, the top end of the guide screw is locked in the locking hole, the bottom end of the guide screw passes through the through hole and is locked with the rubber connecting block, and the top surface of the pressure head seat is provided with a slide rail for the rubber connecting block to slide and clamp.
The brick-making machine pressure head as described in claim 12 is characterized in that: the single-section airbag has an airbag body, a first connecting part arranged on the top surface of the airbag body, and a second connecting part arranged on the bottom surface of the airbag body; the first connecting part is provided with two first screw holes, the top plate is provided with two first through holes, and the bolts pass through the first through holes and are locked in the first screw holes; the second connecting part is provided with two second screw holes, the vibration beam is provided with two second through holes, and the bolts pass through the second through holes and are locked in the second screw holes.
The brick-making machine pressure head as described in claim 12 is characterized in that: the rubber connecting block is provided with a stepped countersunk hole, the guide screw has a sliding portion that abuts against the top surface of the rubber connecting block and a locking portion that extends into the stepped countersunk hole, and the locking portion of the guide screw penetrates into the stepped countersunk hole and is locked with the nut.
The brick-making machine pressure head as described in claim 14 is characterized in that: a groove ring is provided on the top surface of the rubber connecting block, a ring platform is formed between the inner ring of the groove ring and the stepped countersunk hole, the outer ring of the groove ring has a boss protruding from the bottom of the groove ring groove, and the height of the ring platform protruding from the groove ring is higher than the height of the boss protruding from the groove ring; and a rubber gasket is provided on the top surface of the rubber connecting block, the bottom surface of the rubber gasket is abutted against the groove ring, and the inner ring of the rubber gasket is abutted against the ring platform and the outer ring of the sliding part.
The brick making machine pressure head as described in claim 12 is characterized in that: the guide bolt is provided with a circle of abutment ring that abuts against the bottom surface of the top plate.
The brick-making machine pressure head as described in claim 12 is characterized in that: the airbag seat is provided with two support columns at both ends of the top plate, the two support columns located at one end of the top plate are located on both sides of the guide screw, and the bottom ends of the support columns are supported on the vibrating beam.
The brick-making machine pressure head as described in claim 12 is characterized in that: the top surface of the pressure head seat is provided with three parallel slide rails, and two sets of tensioning components are provided relative to each slide rail.
A brick making process for double-layer pavement bricks, characterized in that the double-layer pavement bricks are made by using the brick making machine press head as described in any one of claims 1 to 18, and the process comprises the following steps:

S1, base material unloading step: the base material vehicle moves to the top of the mold cavity and unloads the base material into the mold cavity;

S2, base material layer forming step: the brick making machine pressure head is pressed down on the base material, and the vibration mechanism is turned on; during the vibration of the vibration mechanism, the vibration beam is subjected to the vibration force of the vibration mechanism and the restoring force of the elastic component, and the brick making machine pressure head repeatedly moves upward or downward at a high frequency; the brick making machine pressure head is subjected to the vibration force of the vibration mechanism and moves upward away from the base material surface, so that the vibration mechanism vibrates without pressure, and the base material is evenly distributed; and the brick making machine pressure head is subjected to the elastic restoring force of the elastic component and moves downward to punch on the base material, so that the base material is denser and a base material layer is formed;

S3, the brick making machine pressure head rises to a predetermined position;

S4, fabric unloading step: the fabric cart moves to the top of the mold cavity and unloads the fabric to the top of the base material in the mold cavity;

S5. Double-layer pavement brick forming steps: the brick-making machine pressure head is pressed down on the fabric, and the vibration mechanism is turned on; during the vibration of the vibration mechanism, the vibration beam is subjected to the vibration force of the vibration mechanism and the restoring force of the elastic component, and the brick-making machine pressure head repeatedly moves upward or downward at a high frequency; the brick-making machine pressure head moves upward and away from the fabric surface due to the vibration force of the vibration mechanism, so that the vibration mechanism vibrates without pressure and the fabric is evenly distributed; and the brick-making machine pressure head moves downward due to the elastic restoring force of the elastic component and punches on the fabric, making the fabric denser, forming a fabric layer on the base material layer, and forming double-layer pavement bricks.
The brick-making process for double-layer pavement bricks as described in claim 19 is characterized in that: in the base material layer forming step or the double-layer pavement brick forming step, each time the brick-making machine pressure head moves upward, the vibration force of the vibration mechanism pushes the vibrating beam to move upward, the top surface of the vibrating beam abuts against the bottom surface of the limiting component, and the distance between the vibrating beam and the movable beam is reduced to a minimum distance; each time the brick-making machine pressure head moves downward, the restoring force of the elastic component pushes the vibrating beam to move downward, the bolt head of the fourth bolt abuts against the through countersunk hole of the vibrating beam, and the distance between the vibrating beam and the movable beam is increased to a maximum distance.
The brick-making process of double-layer pavement bricks as described in claim 19 is characterized in that the elastic component is pre-compressed by 1-1.5 mm between the movable beam and the vibrating beam, and the difference between the maximum spacing and the minimum spacing is 1 mm.
The brick making process of double-layer pavement bricks as described in claim 19 is characterized in that: in the base material layer forming step, the vibration frequency of the vibration mechanism is 50HZ.
The brick making process of double-layer pavement bricks as described in claim 19 is characterized in that: in the double-layer pavement brick forming step, the vibration mechanism is divided into a first vibration section and a second vibration section with two different vibration speeds, and the vibration time is 2S; the vibration frequency of the first vibration section is 60HZ, and the vibration time is 1.2S; the vibration frequency of the second vibration section is 70HZ, and the vibration time is 0.8S.
The brick-making process of double-layer pavement bricks as described in claim 19 is characterized in that: in the double-layer pavement brick forming step, the brick-making machine pressure head performs a slight upward lifting action and then presses down on the surface material; wherein, the time of slight lifting is 0.06-0.07S, and the number of slight liftings is one or two times.
The brick-making process for double-layer pavement bricks as described in claim 19 is characterized in that: in step S2, the brick-making machine pressure head forms a 5 mm pit on the base material in the mold cavity.