A forming device for producing recycled bricks

Abstract

The invention discloses a forming device for recycled brick production, which relates to the technical field of recycled brick production. The device comprises a vibrating forming bed, a mold quick-change mechanism, a hydraulic forming unit and a pushing and conveying mechanism. The vibrating forming bed excites aggregate resonance and compaction through a spring suspension and a high-frequency vibration unit with adjustable frequency, thereby reducing the pressure requirement for recycled brick forming, thereby reducing the loss of the forming mold and the energy consumption of the hydraulic forming unit. The mold quick-change mechanism adopts a vertical multi-layer mold rack and an automatic positioning unit to achieve fast and accurate mold change. The hydraulic forming unit is equipped with a variable pump and multi-mode output parameters, combined with the rapid replacement function of the molding jig, to adaptively match the pressing requirements of different molds to improve hydraulic energy efficiency. Through modular design and multi-mechanism and multi-system collaborative control, the technical problems existing in the existing recycled brick forming equipment are solved, and flexible production of multiple varieties and specifications is supported.

Description

Technical Field

[0001] The invention relates to the technical field of recycled brick production, in particular to a forming device for recycled brick production. Background Art

[0002] As key equipment in the field of resource recycling, the recycled brick production equipment's recycled brick forming process directly determines the mechanical properties and production efficiency of recycled brick products; while traditional recycled brick forming equipment mostly uses fixed molds and a single pressing mode, which has inherent defects such as poor process adaptability, high energy consumption, and fast mold loss.

[0003] At present, mainstream equipment generally adopts an integral casting mold structure. When the product specifications change, the entire set of mold components must be stopped and disassembled, resulting in a production line adjustment time of up to 4-8 hours. This rigid structure not only restricts the flexible production capacity of multiple varieties, but also causes a decrease in positioning accuracy due to frequent disassembly and assembly. The hydraulic system mostly uses a quantitative pump with a throttling speed control circuit, which generates a reactive power loss of up to 30%-42% during the pressure holding stage, and the measured unit product energy consumption is 1.2-1.5kWh. At the same time, in order to meet the compressive strength requirements of ≥15MPa for building bricks, ultra-high pressure pressing is generally used, which causes the side wall of the mold to bear a stress of more than 400kN per square, accelerating the plastic deformation and surface cracking of the mold, and the average mold life is less than 3000 molds.

[0004] Improvement plans in recent years have attempted to optimize mold materials (such as using high-chromium cast iron) or increase the pressure compensation function of the hydraulic system, but have failed to break through the limitations of structural principles.

[0005] Existing improvements: (1) Improving the uniformity of pressing by synchronously pressurizing the dual cylinders leads to an increase in the complexity of the hydraulic system.

[0006] (2) A modular mold frame design was adopted, but the problem of rapid positioning and sealing of the mold cavity was not solved, and the actual mold change time still exceeded 2 hours.

[0007] (3) Although the vibration-assisted forming technology has been verified in the laboratory stage to reduce the forming pressure by 30%, the vibration module of the existing equipment cannot reach a high frequency. Since the vibration module of the existing recycled brick equipment mostly uses a mechanical eccentric block structure to generate vibration, its vibration frequency is mostly concentrated in the range of 50-80Hz, which is difficult to effectively stimulate the resonance response of the aggregate particles and the vibration effect is limited.

[0008] The mold system structure of existing recycled brick production and forming equipment is rigid and rigid, the specification switching efficiency is low and the positioning accuracy is difficult to maintain; the hydraulic energy utilization rate is low, and the reactive power loss in the pressure holding stage significantly affects the energy efficiency index; the ultra-high pressing pressure accelerates the failure of the mold, resulting in increased production costs; the vibration parameters are not sufficiently matched with the aggregate grading, and the vibration compaction effect cannot be fully exerted.

[0009] In summary, it is found that the prior art has at least the following technical problems:

[0010] Existing recycled brick forming equipment has technical problems such as low mold durability, low switching efficiency and positioning accuracy, low hydraulic energy utilization, and limited vibration compaction effect. Summary of the invention

[0011] The purpose of the present invention is to provide a forming device for recycled brick production to solve the technical problems of existing recycled brick forming equipment, such as low mold durability, low switching efficiency and positioning accuracy, low hydraulic energy utilization, and limited vibration compaction effect.

[0012] The various technical effects that can be produced by the preferred technical solutions among the various technical solutions provided by the present invention are described in detail below.

[0013] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0014] The present invention provides a forming device for producing recycled bricks, comprising a vibrating forming bed, a spring suspension unit and a high-frequency vibration unit with adjustable vibration frequency are arranged under the forming table of the vibrating forming bed, the forming table contacts with the vibration end of the high-frequency vibration unit when the spring suspension unit is compressed to form vibration conduction, so that the forming table obtains high-frequency vibration for vibrating and compacting the forming aggregate of the recycled bricks; and a brick conveyor belt arranged at the tail of the vibrating forming bed, the brick conveyor belt is used to receive the pushed-out formed recycled bricks and transport the recycled bricks from the forming table to the stockpiling area; and a pushing unit arranged at the head of the vibrating forming bed, the pushing unit is used to push the recycled bricks located on the forming table to the brick conveyor belt after the recycled bricks are formed and demolded; and a mold quick-changing mechanism arranged on the side of the vibrating forming bed, the mold quick-changing mechanism is provided with a mold frame and a quick-changing unit, and a plurality of forming molds are positioned and placed in the mold frame from bottom to top in the vertical direction; the quick-changing unit is used according to production needs The forming mold automatically selects and pushes the required forming mold to the positioning area on the forming table, and then sends out mold arrival information. After the vibration forming bed receives the mold arrival information, it starts the positioning unit under the forming table and positions the forming mold on the forming table; and a hydraulic forming unit is arranged above the vibration forming bed, the hydraulic forming unit is provided with a plurality of molding jigs matching the mold cavity of the forming mold, and the hydraulic rod of the hydraulic forming unit can quickly replace the corresponding molding jigs; the hydraulic forming unit is provided with a plurality of output modes of output stroke and output pressure parameters in conjunction with a plurality of the forming molds, which are used for the hydraulic rod to match the output parameters required by the corresponding forming mold after replacing the molding jig; the hydraulic forming unit is also provided with a variable pump, which is used to make the hydraulic flow and flow rate of the hydraulic forming unit adjustable, and can adaptively adjust the hydraulic flow and flow rate according to the forming pressure when the recycled bricks are formed, so as to improve the forming efficiency of the hydraulic forming unit for recycled brick aggregates.

[0015] In one of the embodiments, it also includes a modular overlapping profile frame; the vibration forming bed is arranged in the profile frame; the brick conveyor belt is arranged outside the profile frame, and extends into the profile frame to dock with the tail of the vibration forming bed; the pushing unit is installed on the profile frame and is located at the head of the vibration forming bed; the mold quick-change mechanism is arranged outside the profile frame and is located on the side of the profile frame; the hydraulic forming unit is arranged at the top of the profile frame, and the hydraulic rod extends from the top of the profile frame into and reaches the forming mold on the forming table.

[0016] In one embodiment, the vibration forming bed also includes a pedestal; the forming table is located above the pedestal, and the shape of the forming table is smaller than the pedestal; the spring suspension unit includes a damping spring and a spring seat, and the spring seat is installed on the upper side of the pedestal and the lower side of the forming table, and the two ends of the damping spring are respectively inserted into and locked in the spring seats located on the upper side of the pedestal and the lower side of the forming table; the high-frequency vibration unit is installed on the pedestal, and the two ends of the body of the high-frequency vibration unit are respectively installed with damping blocks and vibration guide blocks, and the vibration guide blocks are located at the vibration end.

[0017] In one embodiment, the positioning unit includes a positioning cylinder and a positioning finger; the positioning cylinder is installed on the lower side of the forming table, and the positioning finger is installed on the telescopic end of the positioning cylinder; a plurality of positioning through holes are provided on the forming table, and the plurality of positioning through holes are respectively arranged around the outer side of the forming mold and corresponding to the positioning grooves of the forming mold; the positioning finger is driven by the positioning cylinder and extends to the forming table through the positioning through hole, or retracts under the forming table; when the quick-change unit pushes the forming mold to the forming table, and after the positioning groove of the forming mold reaches the positioning through hole, the positioning unit controls the plurality of positioning cylinders to extend, so that the plurality of positioning fingers are respectively inserted into the plurality of positioning grooves of the forming mold, and after the quick-change unit automatically replaces the forming mold, the forming mold is accurately positioned on the forming table.

[0018] In one embodiment, the positioning unit further includes an in-position sensor, and a plurality of in-position sensors are respectively installed under a plurality of the positioning through holes, and the laser of the in-position sensor is emitted from the gap between the positioning finger and the inner wall of the positioning through hole onto the forming table; when the quick-change unit executes the forming mold ejection instruction, the positioning unit is in a waiting-for-positioning state, and after the laser emitted by the in-position sensor surrounding the forming mold is completely blocked by the forming mold, the positioning unit controls the plurality of positioning cylinders to extend simultaneously, so that the positioning finger is inserted into the positioning groove of the forming mold, so as to realize the in-position positioning of the forming mold; after the positioning cylinders are fully extended, the positioning unit is switched to a waiting-for-cancellation positioning state, and when the quick-change unit executes the forming mold retracting instruction, the positioning unit cooperates with the quick-change unit to simultaneously control the plurality of positioning cylinders to retract simultaneously, so that the positioning finger is pulled out of the positioning groove of the forming mold, so that the forming mold is retracted by the quick-change unit.

[0019] In one of the embodiments, the mold rack includes a fixed frame body and a lifting platform, the lifting platform is arranged in the fixed frame body, and automatically rises and falls when the quick-change unit selects the required forming mold, so that the corresponding forming mold is in front of the quick-change unit; wherein, two groups of mold storage rooms arranged side by side are arranged on the lifting platform, each group of the mold storage rooms is provided with multiple layers, and each layer stores a style of the forming mold; a screw nut fixed to the bottom plate of the lifting platform is arranged between the two groups of the mold storage rooms, and fixed lifting slide bars are respectively arranged on the four corners of the bottom plate of the lifting platform; linear bearings corresponding to the lifting slide bars are arranged on the four corners of the top of the fixed frame body, and the lifting slide bar slides into the linear bearings, and a motor drive unit and a lifting screw are arranged at the top center of the fixed frame body, and the lifting screw is transmission-connected with the screw nut and the motor drive unit, and the lifting platform is driven by the motor drive unit to realize automatic lifting.

[0020] In one embodiment, the quick-change unit is provided with two groups, and the two groups of the quick-change units are respectively arranged behind the two groups of the mold storage rooms; the quick-change unit includes an ejection cylinder, a guide rod, a guide seat and an electromagnet adsorption jig; the guide seat is provided on two parallel sides of the ejection cylinder, the guide rod penetrates into the guide seat to form a sliding connection, a jig plate is installed at the telescopic end of the ejection cylinder, one end of the guide rod is connected to the jig plate, and when the jig plate moves with the telescopic end of the ejection cylinder, the guide rod is used to assist the jig plate to extend or retract smoothly; the electromagnet adsorption jig is installed on the jig plate and moves with the jig plate; the electromagnet adsorption jig generates an adsorption force after being energized for strongly adsorbing the forming mold, and can be adsorbed on the electromagnet adsorption jig when ejected or retracted, so that the forming mold can reach the positioning area of ​​the forming table or be retracted into the mold storage room smoothly and accurately.

[0021] In one of the embodiments, the quick-change unit is fixedly mounted on the fixed frame, a cantilever platform is provided on the side of the fixed frame, and the ejection cylinder and the guide seat are both provided on the cantilever platform; the fixed quick-change unit automatically switches the style of the ejected forming mold for the forming mold in the mold storage room through the liftable lifting frame.

[0022] In one of the embodiments, the quick-change unit is mounted on the fixed frame in a liftable manner; a vertically sliding suspension platform is provided on the side of the fixed frame, and the ejection cylinder and the guide seat are both provided on the suspension platform; a linear lifting module or a lifting cylinder is provided on the top of the fixed frame, and the quick-change unit is driven to lift and lower by connecting the telescopic end of the linear lifting module or the lifting cylinder to the table top of the suspension platform, so as to automatically select the forming mold in both directions from the mold storage room, so as to enable the quick-change unit to switch the style of the ejected forming mold in a more flexible manner, and to assist in the demolding of the recycled bricks in the forming mold after forming.

[0023] In one embodiment, it also includes a demoulding mechanism for assisting in demoulding the regenerated bricks in the forming mold after forming; the demoulding mechanism includes a mounting table, a demoulding cylinder and a shock absorbing unit;

[0024] The demoulding cylinder is installed on the mounting table, and the mounting table is installed on the top of the profile frame, and the telescopic end of the demoulding cylinder is directed toward the forming table; wherein the shock-absorbing unit includes a base plate, a top plate, a main rod, an auxiliary guide rod, a shock-absorbing spring and a rubber top; one side of the base plate is connected to the telescopic end of the demoulding cylinder; four evenly distributed guide through holes are arranged around the base plate, and one end of the two main rods and the two auxiliary guide rods are slidably connected to the guide through holes; the other ends of the main rod and the auxiliary guide rod are connected and fixed to one side of the top plate, and the other side of the top plate is used to install the rubber top; the two shock-absorbing springs are respectively sleeved on the two main rods and are located between the base plate and the top plate.

[0025] In one of the embodiments, a transverse push cylinder is further provided between the mounting table and the demoulding cylinder, and the transverse push cylinder is used to push the demoulding cylinder together with the shock absorbing unit to move laterally, so that the shock absorbing unit switches from abutting the forming table to abutting the forming mold.

[0026] The recycled brick production forming equipment of the present invention has the following beneficial effects by adopting a modular structure, in view of the core problems of the existing recycled brick forming equipment, such as low mold durability, poor mold switching efficiency, insufficient hydraulic energy efficiency and limited vibration compaction effect:

[0027] (1) Efficient switching and improved durability of molds in mold quick-change mechanisms;

[0028] Modular mold quick-change mechanism: The mold rack is used to place the forming molds in a vertically stacked manner and cooperate with the automated quick-change unit to achieve accurate positioning and rapid switching of the forming molds, as well as the final positioning and fixing of the forming mold by the positioning unit on the forming table, so that the mold change time is shortened from the traditional 4-8 hours to within 10-15 minutes, and the positioning accuracy error is controlled within ±1mm.

[0029] Optimization of mold life: A high-frequency vibration unit is used to compact the aggregates of the forming mold during the filling and forming process, reducing the stress concentration on the mold side wall during the recycled brick pressing and forming process, reducing the forming pressure, and increasing the mold life to more than 8,000 molds. During filling, vibration can be introduced to reduce the gap between aggregates, making the filling speed faster and achieving one-time filling. There is no need to perform repeated filling operations of filling-initial compaction-refilling-pressing, further improving the production efficiency of recycled bricks from filling to pressing and forming.

[0030] (2) Synergistic improvement of hydraulic system energy efficiency and forming accuracy;

[0031] Dynamic adjustment of the variable pump: Through the pressure-flow closed-loop control algorithm, the flow output is automatically reduced during the pressure holding stage to reduce overflow loss. The proportion of ineffective energy consumption of the hydraulic system is reduced from 30%-42% to 8%-12%, and the forming energy consumption of a single recycled brick is further reduced.

[0032] Multi-mode pressure output: Customized output hydraulic rod stroke and pressure parameters are matched according to different mold specifications, so that the molding jig can also output corresponding stroke and pressure for recycled bricks of different specifications when pressing recycled bricks, ensuring no waste of energy and reducing damage to the forming mold; in the continuous production process, the pressing force fluctuation range of recycled bricks of the same specification is kept within ±2%, and the output pressure of recycled bricks of different specifications can also be kept stable under the output mode of the current parameters, effectively eliminating the delamination defects of recycled bricks caused by unstable holding pressure during the pressing process, so that recycled bricks of different specifications can also be pressed out in the same hydraulic forming unit and the quality of recycled bricks can be kept stable, so that multi-mold switching and multi-specification recycled bricks can be produced under the same equipment. The product qualification rate is also increased from 92.6% to 99.3%, and the production efficiency of recycled bricks is further improved.

[0033] (3) Effective deep excitation of high-frequency vibration compaction effect;

[0034] Resonance frequency matching: Vibration conduction is formed through the contact between the vibration head and the forming table, and the high-frequency vibration is transmitted to the forming table and the mold cavity. Through all-round surrounding vibration, the filled aggregate particles will produce high-frequency vibration, stimulating the resonance response between the aggregate particles, reducing the internal porosity of the recycled brick from 8.7% to 4.2%, and the compressive strength is increased to 1820MPa.

[0035] The high-frequency vibration unit has an adjustable vibration frequency and its vibration function is highly flexible, which can adapt to the flexible production of recycled brick products with different specifications and parameters.

[0036] Energy transfer optimization: The dynamic coupling design of the spring suspension unit and the vibration head increases the vibration energy utilization rate to 85%. While producing the same dense effect on the recycled bricks, the vibration power consumption of the high-frequency vibration unit is reduced by 40%, and the vibration time of the vibration step is reduced, which saves the production time of the recycled bricks and further improves the production efficiency of the recycled bricks.

[0037] (4) Full process automation and flexible production compatibility;

[0038] Intelligent collaborative control: The mold quick-change mechanism, positioning unit, high-frequency vibration unit, hydraulic forming unit and pusher unit are controlled through PLC linkage, so that the circuit devices of each mechanism and unit can complete information exchange and control, and realize the automation of the "mold change-positioning-vibration-pressing-demolding-conveying" forming process. In addition, when the recycled brick forming production line switches to recycled brick products of different specifications, no manual intervention is required, and the production of multiple recycled brick products of different specifications in a single day is supported.

[0039] In summary, the present invention systematically solves the contradiction between production efficiency, energy consumption and product quality in the recycled brick forming production process through key technologies such as modular mold quick change, precise positioning of the forming mold by the positioning unit on the forming table, high-frequency vibration compaction coordinated filling and pressing, and adaptive adjustment of hydraulic pressing parameters. While improving the mold life and reducing the overall energy consumption, it realizes the flexible production of products of various specifications and the simultaneous optimization and improvement of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is an overall axonometric view of a forming device for producing recycled bricks according to a first embodiment of the present invention;

[0042] Figure 2 It is a partial side view of a forming device for producing recycled bricks according to the first embodiment of the present invention;

[0043] Figure 3 yes Figure 2 A schematic diagram of the partially enlarged structure of part A;

[0044] Figure 4It is an overall isometric view of the mold quick-change mechanism of the first embodiment of the present invention;

[0045] Figure 5 It is a schematic diagram of the top view of the vibration forming bed of the first embodiment of the present invention.

[0046] The reference numerals are as follows:

[0047] 1. Vibration forming bed; 11. Forming table; 111. Positioning area; 12. Base; 13. Spring suspension unit; 131. Damping spring; 132. Spring seat; 14. High-frequency vibration unit; 141. Damping block; 142. Vibration guide block; 15. Positioning unit; 151. Positioning cylinder; 152. Positioning finger;

[0048] 2. Brick conveyor belt;

[0049] 3. Pushing unit;

[0050] 4. Mold quick-change mechanism; 41. Mold rack; 411. Fixed frame; 42. Lifting platform; 421. Mold storage room; 422. Lifting slide bar; 423. Motor drive unit; 424. Lifting screw rod; 43. Quick-change unit; 431. Push-out cylinder; 432. Guide rod; 433. Guide seat; 434. Electromagnet adsorption fixture; 435. Fixture plate; 436. Cantilever platform;

[0051] 5. Hydraulic forming unit; 51. Molding jig; 52. Variable displacement pump;

[0052] 6. forming die; 61. positioning groove;

[0053] 7. Profile frame;

[0054] 8. Demolding mechanism; 81. Mounting table; 82. Demolding cylinder; 83. Shock-absorbing unit; 831. Base plate; 832. Top plate; 833. Main guide rod; 834. Auxiliary guide rod; 835. Shock-absorbing spring; 836. Rubber top. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0056] A specific embodiment provides a forming device for recycled brick production, which includes a vibrating forming bed, a mold quick-change mechanism, a hydraulic forming unit, a brick conveyor belt and a pushing unit; the vibrating forming bed excites the recycled brick aggregate filled in the forming mold to resonate and compact through a spring suspension and a high-frequency vibration unit with adjustable frequency, thereby reducing the pressure requirement for forming recycled bricks, thereby reducing the loss of the forming mold and the energy consumption of the hydraulic forming unit; the mold quick-change mechanism adopts a vertical multi-layer mold rack and an automatic positioning unit to achieve fast and accurate mold change; the hydraulic forming unit is equipped with a variable pump and multi-mode output parameters, combined with the rapid replacement function of the molding jig, to adaptively match the pressing requirements of different molds to improve hydraulic energy efficiency; through modular design and multi-mechanism and multi-system collaborative control, it effectively solves the problems of mold durability, low switching efficiency and positioning accuracy, low hydraulic energy utilization, and limited vibration compaction effect existing in the existing recycled brick forming equipment, and supports flexible production of multiple varieties and specifications.

[0057] The first embodiment of the forming device for producing recycled bricks is as follows Figures 1 to 5As shown, it includes a vibration forming bed 1, a spring suspension unit 13 and a high-frequency vibration unit 14 with adjustable vibration frequency are arranged under the forming table 11 of the vibration forming bed 1, and the forming table 11 contacts the vibration end of the high-frequency vibration unit 14 when the spring suspension unit is compressed to form vibration conduction, so that the forming table 11 obtains high-frequency vibration for vibrating and compacting the forming aggregate of the recycled brick; and a brick conveyor belt 2 arranged at the tail of the vibration forming bed 1, the brick conveyor belt 2 is used to receive the pushed out formed recycled bricks and transport the recycled bricks from the forming table 11 to the stacking area; and a pushing unit 3 arranged at the head of the vibration forming bed 1, the pushing unit 3 is used to push the recycled bricks located on the forming table 11 to the brick conveyor belt 2 after the recycled bricks are formed and demolded; and a mold quick-changing mechanism 4 arranged on the side of the vibration forming bed 1, the mold quick-changing mechanism 4 is provided with a mold frame 41 and a quick-changing unit 43, and a plurality of forming molds 6 are positioned and placed in the mold frame 41 from bottom to top in the vertical direction; the quick-changing unit 43 is used according to the forming mold used for production needs. The vibrating forming bed 1 automatically selects the mold 6 and pushes the required forming mold 6 to the positioning area 111 on the forming table 11, and then sends out the mold in place information. After receiving the mold in place information, the vibrating forming bed 1 starts the positioning unit 15 under the forming table 11 and positions the forming mold 6 on the forming table 11; and a hydraulic forming unit 5 is arranged above the vibrating forming bed 1, the hydraulic forming unit 5 is provided with a plurality of molding jigs 51 matching the mold cavity of the forming mold 6, and the hydraulic rod of the hydraulic forming unit 5 can quickly replace the corresponding molding jigs 51; the hydraulic forming unit 5 is provided with a plurality of output modes of output stroke and output pressure parameters in conjunction with the plurality of forming molds 6, which are used for matching the output parameters required by the corresponding forming mold 6 after the hydraulic rod replaces the molding jig 51; the hydraulic forming unit 5 is also provided with a variable pump 52, which is used to make the hydraulic flow and flow rate of the hydraulic forming unit 5 adjustable, and can adaptively adjust the hydraulic flow and flow rate according to the forming pressure when the recycled brick is formed, so as to improve the forming efficiency of the hydraulic forming unit 5 for the recycled brick aggregate.

[0058] Specifically, it also includes a modular overlapped profile frame 7; a vibration forming bed 1 is arranged in the profile frame 7; a brick conveyor belt 2 is arranged outside the profile frame 7, and extends into the profile frame 7 to dock with the tail of the vibration forming bed 1; a pushing unit 3 is installed on the profile frame 7 and is located at the head of the vibration forming bed 1; a mold quick-change mechanism 4 is arranged outside the profile frame 7 and is located on the side of the profile frame 7; a hydraulic forming unit 5 is arranged at the top of the profile frame 7, and a hydraulic rod extends from the top of the profile frame 7 into and reaches the forming mold 6 on the forming table 11.

[0059] When in use, the pushing end of the pushing unit 3 is set higher than the forming table 11, and the pushing end is within the thickness range of the recycled brick, that is, an obstacle gap is reserved between the side of the pushing end facing the forming table 11 and the table surface of the forming table 11, and aggregate debris is placed on the forming table 11 to clamp the pushing end.

[0060] Among them, the mold cavity shape of the forming mold 6 of the recycled brick can be the size of 240×115×53mm like the conventional rectangular recycled brick, or the size of the sidewalk square brick, or the large rectangular size of the aerated block, that is, the mold cavity of the forming mold 6 can adapt to the shapes and sizes of various bricks; the shape of the pressing plate of the molding jig 51 of the hydraulic rod installed on the corresponding hydraulic forming unit 5 is also made corresponding to the plane shape of the mold cavity of the forming mold 6, so that the forming equipment for recycled brick production can adapt to the flexible production of recycled brick products of various shapes and sizes.

[0061] The forming equipment for recycled brick production has a modular structure, facing the core problems of existing recycled brick forming equipment such as low mold durability, poor mold switching efficiency, insufficient hydraulic energy efficiency and limited vibration compaction effect, and has the following beneficial effects:

[0062] (1) Efficient switching and improved durability of molds in mold quick-change mechanisms;

[0063] Modular mold quick-change mechanism: The mold rack 41 is used to place the forming mold 6 in a vertically stacked manner in conjunction with the automated quick-change unit 43 to achieve precise positioning and rapid switching of the forming mold 6, as well as the final positioning and fixing of the forming mold 6 by the positioning unit 15 on the forming table 11, thereby shortening the mold change time from the traditional 4-8 hours to within 10-15 minutes, and the positioning accuracy error is controlled within ±1mm.

[0064] Optimization of mold life: A high-frequency vibration unit 14 is used to compact the aggregates of the forming mold 6 during the filling and forming process, reducing the stress concentration on the mold side wall during the recycled brick pressing and forming process, reducing the forming pressure, and increasing the mold life to more than 8,000 molds. During filling, vibration can be introduced to reduce the gap between aggregates, making the filling speed faster and achieving one-time filling. There is no need to perform repeated filling operations of filling-initial compaction-feeding-pressing, further improving the production efficiency of recycled bricks from filling to pressing and forming.

[0065] (2) Synergistic improvement of hydraulic system energy efficiency and forming accuracy;

[0066] Dynamic adjustment of the variable pump: Through the pressure-flow closed-loop control algorithm, the flow output is automatically reduced during the pressure holding stage to reduce overflow loss. The proportion of ineffective energy consumption of the hydraulic system is reduced from 30%-42% to 8%-12%, and the forming energy consumption of a single recycled brick is further reduced.

[0067] Multi-mode pressure output: The stroke and pressure parameters of the hydraulic rod are customized according to the different mold specifications, so that the molding fixture 51 can output the corresponding stroke and pressure for recycled bricks of different specifications when pressing the recycled bricks, ensuring that energy is not wasted and damage to the forming mold 6 is reduced; in the continuous production process, the pressing force fluctuation range for recycled bricks of the same specification is kept within ±2%, and the output pressure can be kept stable under the current parameter output mode when facing recycled bricks of different specifications, effectively eliminating the delamination defects of recycled bricks caused by unstable holding pressure during the pressing process, so that recycled bricks of different specifications can also be pressed out in the same hydraulic forming unit 5 and the quality of the recycled bricks can be kept stable, so that multi-mold switching and multi-specification recycled bricks can be produced under the same equipment. The product qualification rate is also increased from 92.6% to 99.3%, and the production efficiency of recycled bricks is further improved.

[0068] (3) Effective deep excitation of high-frequency vibration compaction effect;

[0069] Resonance frequency matching: Vibration conduction is formed through the contact between the vibration head and the forming table 11, and the high-frequency vibration is transmitted to the surface of the forming table 11 and the mold cavity of the mold. Through all-round surrounding vibration, the filled aggregate particles produce high-frequency vibration, which stimulates the resonance response between the aggregate particles, and reduces the internal porosity of the recycled brick from 8.7% to 4.2%, and the compressive strength is increased to 1820MPa, which exceeds the compressive strength of recycled bricks specified in GB / T41112013 standard by at least 20%.

[0070] The high-frequency vibration unit 14 has an adjustable vibration frequency, and its vibration frequency is adjustable within the range of 120-220 Hz, which has high flexibility and can adapt to the flexible production of recycled brick products with different specifications and parameters.

[0071] Energy transfer optimization: The dynamic coupling design of the spring suspension unit 13 and the vibration head increases the vibration energy utilization rate to 85%. Under the condition of producing the same dense effect on the recycled bricks, the vibration power consumption of the high-frequency vibration unit 14 is reduced by 40%, and the vibration time of the vibration step is reduced, which saves the production time of the recycled bricks and further improves the production efficiency of the recycled bricks.

[0072] (4) Full process automation and flexible production compatibility;

[0073] Intelligent collaborative control: The mold quick-change mechanism 4, the positioning unit 15, the high-frequency vibration unit 14, the hydraulic forming unit 5 and the pushing unit 3 are controlled through PLC linkage, so that the circuit devices of each mechanism and unit can complete information interaction and control, and realize the automation of the "mold changing-positioning-vibration-pressing-demolding-conveying" forming process. In addition, when the recycled brick forming production line switches to recycled brick products of different specifications, no manual intervention is required, and the production of multiple recycled brick products of different specifications in a single day is supported.

[0074] In summary, the present invention systematically solves the contradiction between production efficiency, energy consumption and product quality in the recycled brick forming production process through key technologies such as modular mold quick change, precise positioning of the forming mold 6 by the positioning unit 15 on the forming table 11, high-frequency vibration compaction coordinated filling and pressing, and adaptive adjustment of hydraulic pressing parameters. While improving the mold life and reducing the overall energy consumption, it realizes the flexible production of products of various specifications and the simultaneous optimization and improvement of product quality.

[0075] As one optional implementation,

[0076] In order to ensure the high-frequency vibration compaction of aggregate and the stable forming during hydraulic pressing, this embodiment Figure 1 , Figure 2 and Figure 5 As shown, the vibration forming bed 1 also includes a base 12; the forming table 11 is located above the base 12, and the shape of the forming table 11 is smaller than the base 12; the spring suspension unit 13 includes a damping spring 131 and a spring seat 132, and the spring seat 132 is installed on the upper side of the base 12 and the lower side of the forming table 11, and the two ends of the damping spring 131 are respectively inserted into and locked in the spring seat 132 located on the upper side of the base 12 and the lower side of the forming table 11; the high-frequency vibration unit 14 is installed on the base 12, and the two ends of the body of the high-frequency vibration unit 14 are respectively installed with a damping block 141 and a vibration guide block 142, and the vibration guide block 142 is located at the vibration end.

[0077] During application, the high-frequency vibration unit 14 is used to perform high-frequency vibration on the recycled brick aggregate in the forming mold 6 to reduce the porosity, so that the internal porosity of the recycled brick is reduced from 8.7% to 4.2%, thereby increasing the density of the recycled brick and further improving the compressive performance of the recycled brick.

[0078] Regarding the specific structure of the mold frame 41, this embodiment Figure 4 As shown, the mold rack 41 includes a fixed frame body 411 and a lifting platform 42. The lifting platform 42 is arranged in the fixed frame body 411 and automatically rises and falls when the quick change unit 43 selects the required forming mold 6, so that the corresponding forming mold 6 is located in front of the quick change unit 43.

[0079] Among them, two groups of mold storage rooms 421 arranged side by side are arranged on the lifting platform 42, and each group of mold storage rooms 421 is provided with multiple layers, and each layer stores a style of forming molds 6; a screw nut fixed to the bottom plate of the lifting platform 42 is arranged between the two groups of mold storage rooms 421, and fixed lifting slide rods 422 are respectively arranged on the four corners of the bottom plate of the lifting platform 42; linear bearings corresponding to the lifting slide rods 422 are arranged on the four corners of the top of the fixed frame 411, and the lifting slide rod 422 slides into the linear bearings, and a motor drive unit 423 and a lifting screw rod 424 are arranged at the top center of the fixed frame 411, and the lifting screw rod 424 is transmission-connected with the screw nut and the motor drive unit 423, and the lifting platform 42 is driven by the motor drive unit 423 to realize automatic lifting.

[0080] In order to ensure that the performance of accurate positioning and rapid positioning when the forming mold 6 is replaced can be stably achieved, this embodiment Figure 2 and Figure 5 As shown, the positioning unit 15 includes a positioning cylinder 151 and a positioning finger 152; the positioning cylinder 151 is installed on the lower side of the forming table 11, and the positioning finger 152 is installed on the telescopic end of the positioning cylinder 151; a plurality of positioning through holes are provided on the forming table 11, and the plurality of positioning through holes are respectively arranged around the outer side of the forming mold 6, and are arranged corresponding to the positioning groove 61 of the forming mold 6; the positioning finger 152 is driven by the positioning cylinder 151, and extends through the positioning through hole to the forming table 11, or retracts to the bottom of the forming table 11.

[0081] During application, the quick-change unit 43 pushes the forming mold 6 to the forming table 11, and after the positioning groove 61 of the forming mold 6 reaches the positioning through hole, the positioning unit 15 controls the multiple positioning cylinders 151 to extend, so that the multiple positioning fingers 152 are respectively inserted into the multiple positioning grooves 61 of the forming mold 6. After the quick-change unit 43 automatically replaces the forming mold 6, the forming mold 6 is accurately positioned on the forming table 11.

[0082] Regarding the positioning coordination of the above-mentioned positioning unit 15 and the quick-change unit 43, the positioning unit 15 also includes an in-position sensor, and multiple in-position sensors are respectively installed under multiple positioning through holes. The laser of the in-position sensor is injected onto the forming table 11 from the gap between the positioning finger 152 and the inner wall of the positioning through hole.

[0083] When the quick-change unit 43 executes the ejection instruction of the forming mold 6, the positioning unit 15 is in a waiting state. After the lasers emitted by the in-position sensors surrounding the forming mold 6 are completely blocked by the forming mold 6, the positioning unit 15 controls multiple positioning cylinders 151 to extend at the same time, so that the positioning fingers 152 are inserted into the positioning grooves 61 of the forming mold 6, thereby realizing the in-position positioning of the forming mold 6.

[0084] After the positioning cylinder 151 is fully extended, the positioning unit 15 is switched to a state to be canceled. When the quick-change unit 43 executes the instruction to retract the forming mold 6, the positioning unit 15 cooperates with the quick-change unit 43 to simultaneously control multiple positioning cylinders 151 to retract at the same time, so that the positioning finger 152 is pulled out of the positioning groove 61 of the forming mold 6, so that the forming mold 6 is retracted by the quick-change unit 43.

[0085] Thereby, the forming mold 6 can be quickly pushed out to the forming table 11 and quickly retracted into the mold storage room 421 of the mold rack 41 , and accurate positioning can be achieved.

[0086] Regarding the specific structure of the pushing action of the forming die 6 of the quick change unit 43, this embodiment Figure 4 As shown, two groups of quick-change units 43 are provided, and the two groups of quick-change units 43 are respectively correspondingly arranged behind the two groups of mold storage rooms 421; the quick-change unit 43 includes an ejection cylinder 431, a guide rod 432, a guide seat 433 and an electromagnet adsorption fixture 434; guide seats 433 are provided on the two parallel sides of the ejection cylinder 431, and the guide rod 432 penetrates into the guide seat 433 to form a sliding connection, and a fixture plate 435 is installed at the telescopic end of the ejection cylinder 431, and one end of the guide rod 432 is connected to the fixture plate 435. When the fixture plate 435 moves with the telescopic end of the ejection cylinder 431, the guide rod 432 is used to assist the fixture plate 435 to extend or retract smoothly; the electromagnet adsorption fixture 434 is installed on the fixture plate 435 and moves with the fixture plate 435.

[0087] When in use, the electromagnet adsorption fixture 434 generates an adsorption force for strongly adsorbing the forming mold 6 after being energized, and can be adsorbed on the electromagnet adsorption fixture 434 when being pushed out or retracted, so that the forming mold 6 can smoothly and accurately reach the positioning area 111 of the forming table 11 or be retracted into the mold storage room 421.

[0088] The electromagnet adsorption fixture 434 can enable the forming mold 6 to form a relatively accurate initial positioning when it is pushed out. After the forming mold 6 reaches the table surface of the forming table 11, the positioning unit 15 can perform secondary repeated positioning. The positioning unit 15 can also be used to stably fix the forming mold 6 on the forming table 11, thereby quickly improving the positioning accuracy and positioning efficiency of the forming mold 6.

[0089] Regarding the specific structure of the quick change unit 43 installed on the mold frame 41, this embodiment Figure 4 As shown, the quick-change unit 43 is fixedly mounted on a fixed frame 411, a cantilever platform 436 is provided on the side of the fixed frame 411, and the ejection cylinder 431 and the guide seat 433 are both provided on the cantilever platform 436; the fixed quick-change unit 43 automatically switches the style of the ejected forming mold 6 for the forming mold 6 in the mold storage room 421 through the liftable lifting platform 42.

[0090] Specifically, it also includes a demoulding mechanism 8 for assisting in demoulding the regenerated bricks in the forming mold 6 after forming; the demoulding mechanism 8 includes a mounting platform 81, a demoulding cylinder 82 and a shock absorbing unit 83; the demoulding cylinder 82 is installed on the mounting platform 81, and the mounting platform 81 is installed on the top of the profile frame 7, and the telescopic end of the demoulding cylinder 82 is directed toward the forming platform 11; wherein the shock absorbing unit 83 includes a base plate 831, a top plate 832, a main guide rod 833, an auxiliary guide rod 834, a shock absorbing spring 835 and a rubber head 836; the base One side of the plate 831 is connected to the telescopic end of the demoulding cylinder 82; four evenly distributed guide holes are arranged around the base plate 831, and one end of the two main rods 833 and the two auxiliary guide rods 834 are slidably connected to the guide holes; the other ends of the main rods 833 and the auxiliary guide rods 834 are connected and fixed to one side of the top plate 832, and the other side of the top plate 832 is used to install the rubber head 836; two shock-absorbing springs 835 are respectively mounted on the two main rods 833 and are located between the base plate 831 and the top plate 832.

[0091] A transverse push cylinder is also provided between the mounting platform 81 and the demoulding cylinder 82 , and the transverse push cylinder is used to push the demoulding cylinder 82 together with the damping unit 83 to move laterally, so that the damping unit 83 switches from abutting the forming platform 11 to abutting the forming mold 6 .

[0092] When in use, the fixed quick-change unit 43, the hydraulic forming unit 5, the demoulding cylinder 82 and the shock absorbing unit 83 are used to assist in demoulding the recycled bricks in the forming mold 6. When assisting in demoulding the forming mold 6, the horizontal push cylinder and the demoulding cylinder 82 extend and make the rubber head 836 abut against the forming mold 6. The forming mold 6, pushed by the demoulding cylinder 82, presses the forming table 11 down until the forming table 11 abuts against the vibration guide block 142 of the high-frequency vibration unit 14, and then starts the high-frequency vibration unit 14 to vibrate the formed recycled bricks and the forming mold 6 to loosen the recycled bricks and the forming mold 6, and then stops the vibration of the high-frequency vibration unit 14, and the horizontal push cylinder and the demoulding cylinder 82 retract; the push cylinder 4 of the quick-change unit 43 31 extends out, the electromagnet adsorption fixture 434 starts to adsorb the forming mold 6, and at this time, the demoulding cylinder 82 synchronously extends out to abut the forming table 11, and the regenerated brick follows the forming table 11 to descend under the action of gravity. At the same time, the forming mold 6 is adsorbed and suspended in the air by the electromagnet adsorption fixture 434, and is pulled back by the pushing cylinder 431 and placed in the mold storage room 421; the demoulding cylinder 82 retracts, the forming table 11 rises and resets, and the cylinder of the pushing unit 3 starts to push the regenerated bricks to the brick conveyor belt 2, and the brick conveyor belt 2 conveys the regenerated bricks to the next station for stacking.

[0093] After the pushing unit 3 pushes the regenerated bricks to the brick conveyor belt 2, the pushing unit 3 resets and retracts.

[0094] The second embodiment of the forming equipment for recycled brick production is different from the first embodiment in that the quick-change unit 43 is installed on the fixed frame 411 in a liftable manner; a vertical sliding suspension platform is provided on the side of the fixed frame 411, and the ejection cylinder 431 and the guide seat 433 are both provided on the suspension platform; a linear lifting module or a lifting cylinder is provided on the top of the fixed frame 411, and the quick-change unit 43 is driven to lift and lower by connecting the telescopic end of the linear lifting module or the lifting cylinder to the table top of the suspension platform, so as to automatically select the forming mold 6 in the mold storage room 421 in both directions, so as to enable the quick-change unit 43 to switch the style of the ejected forming mold 6 and assist in the demolding of the recycled bricks in the forming mold 6 in a more flexible manner.

[0095] Specifically, it also includes a demoulding mechanism 8 for assisting in demoulding the regenerated bricks in the forming mold 6 after forming; the demoulding mechanism 8 includes a mounting platform 81, a demoulding cylinder 82 and a shock absorbing unit 83; the demoulding cylinder 82 is installed on the mounting platform 81, and the mounting platform 81 is installed on the top of the profile frame 7, and the telescopic end of the demoulding cylinder 82 is directed toward the forming platform 11; wherein the shock absorbing unit 83 includes a base plate 831, a top plate 832, a main guide rod 833, an auxiliary guide rod 834, a shock absorbing spring 835 and a rubber head 836; the base One side of the plate 831 is connected to the telescopic end of the demoulding cylinder 82; four evenly distributed guide holes are arranged around the base plate 831, and one end of the two main rods 833 and the two auxiliary guide rods 834 are slidably connected to the guide holes; the other ends of the main rods 833 and the auxiliary guide rods 834 are connected and fixed to one side of the top plate 832, and the other side of the top plate 832 is used to install the rubber head 836; two shock-absorbing springs 835 are respectively mounted on the two main rods 833 and are located between the base plate 831 and the top plate 832.

[0096] When in use, the demoulding is assisted by the liftable quick-change unit 43. When assisting the demoulding of the forming mold 6, the demoulding cylinder 82 extends and the rubber head 836 abuts against the forming table 11, and the forming table 11 is pressed down until the forming table 11 abuts against the vibration guide block 142 of the high-frequency vibration unit 14, and then the high-frequency vibration unit 14 is started to vibrate the formed regenerated brick and the forming mold 6 to loosen the regenerated brick and the forming mold 6, and then the vibration of the high-frequency vibration unit 14 is stopped, and then the demoulding cylinder 82 is retracted to reset the forming table 11, and then the push-out cylinder 431 of the quick-change unit 43 is started, so that the push-out cylinder 431 extends out and contacts the forming mold 6 through the electromagnet adsorption fixture 434, and is energized for adsorption, and then the quick-change unit 43 is driven to rise to separate the forming mold 6 from the regenerated brick, and the push-out cylinder 431 is driven to retract the forming mold 6 to complete the demoulding;

[0097] After demoulding, the pushing unit 3 is driven to push the regenerated bricks on the forming table 11 to the brick conveyor belt 2, and then the pushing unit 3 is reset and retracted.

[0098] The third embodiment of the forming equipment for recycled brick production is different from the first embodiment in that an aggregate filling machine is also provided, which can automatically proportion the recycled brick aggregate and inject the proportioned aggregate into the mold cavity of the recycled brick forming mold 6 through a telescopic injection pipe, and the injection pipe of the aggregate filling machine is arranged on the telescopic arm, and the telescopic arm extends the telescopic pipe from the space between the pushing unit 3 and the top of the profile frame 7 into the mold cavity of the forming mold 6 to automatically fill the mold cavity.

[0099] When in use, through the mold quick-change mechanism 4, positioning unit 15, high-frequency vibration unit 14, hydraulic forming unit 5, pushing unit 3, demoulding mechanism 8 and aggregate filler, through PLC linkage control, the circuit devices of each mechanism and unit complete information exchange and control, realize the automation of the whole process of recycled brick forming of "mold changing-positioning-filling-vibration-pressing-demolding-conveying", and improve the efficiency of the recycled brick forming process in all directions.

[0100] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A forming device for producing recycled bricks, characterized in that: It comprises a vibrating forming bed, wherein a spring suspension unit and a high-frequency vibration unit with adjustable vibration frequency are arranged under the forming table of the vibrating forming bed, and when the spring suspension unit is compressed, the forming table contacts with the vibration end of the high-frequency vibration unit to form vibration conduction, so that the forming table obtains high-frequency vibration for vibrating and compacting the forming aggregate of the recycled brick; and a brick conveyor belt disposed at the tail end of the vibrating forming bed, the brick conveyor belt being used to receive the pushed out formed regenerated bricks and to convey the regenerated bricks from the forming table to a stockpiling area; and a pushing unit arranged at the head of the vibration forming bed, the pushing unit being used to push the regenerated bricks on the forming table to the brick conveyor belt after the regenerated bricks are formed and demoulded; and a mold quick-change mechanism disposed on the side of the vibrating forming bed, wherein the mold quick-change mechanism is provided with a mold rack and a quick-change unit, and a plurality of forming molds are positioned and placed in the mold rack in sequence from bottom to top in the vertical direction; the quick-change unit automatically selects the forming mold used according to production requirements, and after pushing the required forming mold to the positioning area on the forming table, sends out mold in-place information, and after the vibrating forming bed receives the mold in-place information, it starts the positioning unit under the forming table and positions the forming mold on the forming table; And a hydraulic forming unit arranged above the vibration forming bed, the hydraulic forming unit is provided with a plurality of molding jigs matching the mold cavity of the forming mold, and the hydraulic rod of the hydraulic forming unit can quickly replace the corresponding molding jigs; the hydraulic forming unit is provided with a plurality of output modes of output stroke and output pressure parameters in conjunction with the plurality of the forming molds, which are used for the hydraulic rod to match the output parameters required by the corresponding forming mold after replacing the molding jig; the hydraulic forming unit is also provided with a variable pump, which is used to make the hydraulic flow and flow rate of the hydraulic forming unit adjustable, and can adaptively adjust the hydraulic flow and flow rate according to the forming pressure when the recycled bricks are formed, so as to improve the forming efficiency of the hydraulic forming unit for the recycled brick aggregate.

2. The forming equipment for producing recycled bricks according to claim 1, characterized in that: It also includes a modular overlapping profile frame; the vibration forming bed is arranged in the profile frame; The brick conveyor belt is arranged outside the profile frame and extends into the profile frame to dock with the tail of the vibration forming bed; the pushing unit is installed on the profile frame and located at the head of the vibration forming bed; the mold quick change mechanism is arranged outside the profile frame and located on the side of the profile frame; The hydraulic forming unit is arranged on the top of the profile frame, and the hydraulic rod extends from the top of the profile frame into and reaches the forming mold on the forming table.

3. The forming equipment for producing recycled bricks according to claim 2, characterized in that: The vibration forming bed also includes a pedestal; the forming table is located above the pedestal, and the shape of the forming table is smaller than the pedestal; The spring suspension unit includes a damping spring and a spring seat, the spring seat is installed on the upper side of the pedestal and the lower side of the forming table, and the two ends of the damping spring are respectively inserted into and locked in the spring seats located on the upper side of the pedestal and the lower side of the forming table; The high-frequency vibration unit is installed on the pedestal, and a vibration-damping block and a vibration-guiding block are respectively installed at two ends of the body of the high-frequency vibration unit, and the vibration-guiding block is located at the vibration end.

4. The forming equipment for producing recycled bricks according to claim 3, characterized in that: The positioning unit includes a positioning cylinder and a positioning finger; the positioning cylinder is installed on the lower side of the forming table, and the positioning finger is installed on the telescopic end of the positioning cylinder; The forming table is provided with a plurality of positioning through holes, and the plurality of positioning through holes are respectively arranged around the outer side of the forming mold and are arranged corresponding to the positioning grooves of the forming mold; The positioning finger is driven by the positioning cylinder and extends to the forming table through the positioning through hole, or retracts under the forming table; After the quick-change unit pushes the forming mold onto the forming table and the positioning groove of the forming mold reaches the positioning through hole, the positioning unit controls the plurality of positioning cylinders to extend so that the plurality of positioning fingers are respectively inserted into the plurality of positioning grooves of the forming mold. After the quick-change unit automatically replaces the forming mold, the forming mold is accurately positioned on the forming table.

5. The forming equipment for producing recycled bricks according to claim 4, characterized in that: The positioning unit further includes an in-position sensor, wherein a plurality of in-position sensors are respectively installed under a plurality of the positioning through holes, and lasers of the in-position sensors are emitted from the gap between the positioning finger and the inner wall of the positioning through hole to the forming table; When the quick-change unit executes the ejection instruction of the forming mold, the positioning unit is in a waiting state, and after the lasers emitted by the in-position sensors surrounding the forming mold are completely blocked by the forming mold, the positioning unit controls the multiple positioning cylinders to extend simultaneously, so that the positioning fingers are inserted into the positioning grooves of the forming mold, thereby realizing the in-position positioning of the forming mold; After the positioning cylinders are fully extended, the positioning unit is switched to a state to be canceled. When the quick-change unit executes the forming mold retraction instruction, the positioning unit cooperates with the quick-change unit to simultaneously control the multiple positioning cylinders to retract at the same time, so that the positioning fingers are pulled out of the positioning grooves of the forming mold, and the forming mold is retracted by the quick-change unit.

6. The forming equipment for producing recycled bricks according to claim 5, characterized in that: The mold rack includes a fixed frame and a lifting platform, wherein the lifting platform is arranged in the fixed frame and automatically rises and falls when the quick-change unit selects the required forming mold, so that the corresponding forming mold is located in front of the quick-change unit; Wherein, the lifting platform is provided with two groups of mold storage rooms arranged side by side, each group of the mold storage rooms is provided with multiple layers, and each layer stores one style of the forming mold; A screw nut fixed to the bottom plate of the lifting platform is arranged between the two groups of mold storage rooms, and fixed lifting slide bars are respectively arranged on the four corners of the bottom plate of the lifting platform; Linear bearings corresponding to the lifting slide rod are arranged on the four corners of the top of the fixed frame, and the lifting slide rod slides into the linear bearings. A motor drive unit and a lifting screw rod are arranged at the top center of the fixed frame, and the lifting screw rod is transmission-connected with the screw nut and the motor drive unit. The lifting frame is driven by the motor drive unit to realize automatic lifting.

7. The forming equipment for producing recycled bricks according to claim 6, characterized in that: The quick-change units are provided in two groups, and the two groups of quick-change units are respectively provided behind the two groups of mold storage rooms; The quick-change unit includes a push-out cylinder, a guide rod, a guide seat and an electromagnet adsorption fixture; The guide seats are arranged on two parallel sides of the push-out cylinder, the guide rods penetrate into the guide seats to form a sliding connection, a jig plate is installed at the telescopic end of the push-out cylinder, one end of the guide rod is connected to the jig plate, and when the jig plate moves with the telescopic end of the push-out cylinder, the guide rods are used to assist the jig plate to extend or retract smoothly; The electromagnet adsorption fixture is installed on the fixture plate and moves with the fixture plate; The electromagnet adsorption fixture generates adsorption force for strongly adsorbing the forming mold after being energized, and can be adsorbed on the electromagnet adsorption fixture when being pushed out or retracted, so that the forming mold can stably and accurately reach the positioning area of ​​the forming table or be retracted into the mold storage room.

8. The forming equipment for producing recycled bricks according to claim 7, characterized in that: The quick-change unit is fixedly mounted on the fixed frame, a cantilever platform is arranged on the side of the fixed frame, and the ejection cylinder and the guide seat are both arranged on the cantilever platform; the fixed quick-change unit automatically switches the style of the ejected forming mold for the forming mold in the mold storage room through the liftable lifting frame.

9. The forming equipment for producing recycled bricks according to claim 7, characterized in that: The quick-change unit is mounted on the fixed frame in a liftable manner; A vertically sliding suspension platform is arranged on the side of the fixed frame, and the ejection cylinder and the guide seat are both arranged on the suspension platform; a linear lifting module or a lifting cylinder is arranged on the top of the fixed frame, and the quick-change unit is driven to lift and lower by connecting the telescopic end of the linear lifting module or the lifting cylinder to the table top of the suspension platform, so as to automatically select the forming mold in both directions of the mold storage room, so that the quick-change unit can switch the style of the ejected forming mold in a more flexible way, and assist in the demolding of the recycled bricks in the forming mold after forming.

10. The forming equipment for producing recycled bricks according to any one of claims 8 or 9, characterized in that: It also includes a demoulding mechanism for assisting in demoulding the regenerated bricks in the forming mold after forming; The demoulding mechanism comprises a mounting platform, a demoulding cylinder and a shock absorbing unit; the demoulding cylinder is mounted on the mounting platform, the mounting platform is mounted on the top of the profile frame, and the telescopic end of the demoulding cylinder is directed toward the forming platform; Wherein, the shock-absorbing unit includes a base plate, a top plate, a main guide rod, an auxiliary guide rod, a shock-absorbing spring and a rubber top; one side of the base plate is connected to the telescopic end of the demoulding cylinder; four evenly distributed guide holes are arranged around the base plate, and one end of the two main guide rods and the two auxiliary guide rods are slidably connected to the guide through holes; the other ends of the main guide rod and the auxiliary guide rod are connected and fixed to one side of the top plate, and the other side of the top plate is used to install the rubber top; the two shock-absorbing springs are respectively sleeved on the two main guide rods and are located between the base plate and the top plate.

Images