CN114905607B - Pressing method of mould-free pressing equipment for preparing large-scale balancing weight - Google Patents

Abstract

The invention discloses a mold-free pressing device for preparing large counterweights and a pressing method thereof, which comprises a filling bin, a forming bin, a bin cover and a molding bin door; The whole is formed into a hollow cuboid structure arranged horizontally and horizontally; the upper surface of the injection bin is open, and the two bin covers are arranged front and rear, and are hinged with the top of the injection bin; the right side of the molding bin is open, and formed The warehouse door moves vertically up and down along the forming chamber; a length extrusion mechanism is installed on the left inner side of the injection chamber, and the length extrusion mechanism compresses the material into the forming chamber for extrusion and shaping in the long direction; A height extruding mechanism is provided on the inner top surface, and a width extruding mechanism is arranged on the front and rear inner surfaces thereof, and extruding and shaping in the height and width directions are carried out through the cooperation of the height extruding mechanism and the width extruding mechanism. The invention reduces the production of molds, and also avoids the defect that the size deviation of counterweights pressed by different molds is relatively large.

Description

A pressing method of mold-free pressing equipment for preparing large counterweight blocks

technical field

The invention relates to the field of counterweight production equipment, in particular to a pressing method of mold-free pressing equipment for preparing large counterweights.

Background technique

The traditional large-scale counterweight is made by pouring method, and the mold box needs to be produced during the production process. During the production process, it needs several steps such as injection, compression, removal of the mold box, disassembly of the mold box, cleaning of the mold box, brushing of the mold box, and reset of the mold box. The process and the coordination between processes are relatively complicated, the side panels of the mold box are relatively heavy, the disassembly efficiency is low, the safety hazard is large, and the overall production efficiency is low. Therefore, the above problems urgently need to be solved.

Contents of the invention

The technical problem to be solved by the present invention is to provide a pressing method of mold-free pressing equipment for preparing large-scale counterweights. The equipment is effectively divided into injection bins and molding bins, and the pressure can be transmitted after molding. Under the action of the hydraulic cylinder, the formed counterweight in the forming chamber is ejected, which reduces the production of molds, and also avoids the defect that the size deviation of the counterweight pressed by different molds is large.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: a kind of pressing method of the mold-free pressing equipment for preparing large-scale counterweights according to the present invention, its innovative point is that its pressing equipment includes injection bins, molding bins, length Extrusion mechanism, bin cover, forming bin door, supporting plate, width extruding mechanism and height extruding mechanism; the injection bin and molding bin are arranged on the same line on the left and right, and are integrally formed into a hollow cuboid structure arranged horizontally and transversely; The upper surface of the injection bin is open, and the two lids are arranged front and rear, and are hinged with the top of the injection bin; the right side of the molding bin is open, and the The door of the forming chamber moves vertically up and down along the forming chamber to open and close the door of the forming chamber; a length extrusion mechanism is horizontally arranged on the left inner side of the injection chamber, and the length extrusion mechanism will The material is compressed into the forming chamber to carry out the extrusion and shaping of the large weight block in the length direction; a height extruding mechanism is vertically provided on the inner top surface of the forming chamber, and a width extrusion mechanism is horizontally and symmetrically arranged on the front and rear inner sides of the forming chamber. The pressing mechanism, and through the cooperation of the height extrusion mechanism and the width extrusion mechanism, carry out the extrusion shaping of the height and width direction of the large counterweight;

On the edge of each of the canopies away from the center of the filling bin, several half-moon-shaped connecting blocks are vertically arranged at intervals along its length direction, and the arc-shaped grooves of each of the half-moon-shaped connecting blocks are snapped into the corresponding On the corresponding edge of the canopy, the upper end of each half-moon-shaped connecting block is welded and fixed to the upper surface of the corresponding canopy, and the lower end is respectively connected to the front outer side or the rear of the injection bin through a heavy-duty hinge. The outer surface is vertically hinged at the corresponding position; a second hydraulic cylinder is also vertically inclined between each of the half-moon-shaped connecting blocks and the front outer surface or rear outer surface of the injection bin, and the second hydraulic cylinder Driven by the drive, the lid is opened and closed through the half-moon connecting block;

There is also a non-powered roller on the right outer side of the forming bin along the transverse direction. The non-powered roller is arranged between the exit of the forming bin and the entrance of the curing area, and does not affect the movement of the door of the molding bin. The pressed semi-finished large-scale counterweight moves forward to the maintenance area for maintenance; a third infrared position sensor is also installed between the unpowered roller and the forming bin, and the monitoring end of the third infrared position sensor It is set towards the exit of the forming chamber, and then monitors whether the pressed semi-finished large-scale counterweight has been moved out of the forming chamber;

Two first hydraulic cylinders are vertically and symmetrically arranged on the front and rear sides of the forming warehouse door, and the two first hydraulic cylinders are arranged at intervals on the front and rear sides of the unpowered roller, and then through the first hydraulic pressure The cylinder drives the forming warehouse door to move vertically up and down to open and close the forming warehouse door;

The position a is marked on the left side of the interior of the forming chamber, and a first infrared position sensor is also provided at the position relative to the position a inside the forming chamber, and through the cooperation of the first infrared position sensor and the pressing plate of the main machine, the Judging whether the length of the large counterweight has been compressed in place; there is also a supporting plate insertion position inside the forming warehouse relative to position a, the supporting plate is a rectangular structure that matches the inside of the forming warehouse, and through the supporting The plate insertion position is horizontally and laterally slidably connected with the forming chamber;

Position b is also marked on the right side of the interior of the injection bin relative to the left side of position a, and a second infrared position sensor is also provided at the interior of the injection bin relative to position b, and through the second The cooperation of the infrared position sensor and the pressure plate of the main machine is used to judge that when the door of the forming warehouse is about to close again, the hydraulic cylinder of the main machine needs to suspend its action, so as to avoid the influence of the material required for the next large-scale counterweight pressing on the closing of the forming warehouse door;

The length extrusion mechanism includes a main engine hydraulic cylinder and a main engine pressure plate; several main engine hydraulic cylinders are evenly distributed on the left outer surface of the injection bin, each of the main engine hydraulic cylinders is horizontally and horizontally arranged, and its telescopic The ends extend vertically to the inside of the injection bin, and are connected with the main machine press plate vertically and longitudinally; driven by the hydraulic cylinder of the main machine, the main machine press plate moves horizontally and laterally, and compresses the material into the forming bin. The length direction of the large counterweight is extruded and shaped;

The width extrusion mechanism includes lateral hydraulic cylinders and side plates; several lateral hydraulic cylinders are evenly spaced on the front and rear outer surfaces of the forming chamber, and each lateral hydraulic cylinder is arranged horizontally and longitudinally. And the telescopic ends extend vertically to the inside of the forming chamber, and are connected with the corresponding side plates arranged vertically and horizontally; driven by the lateral hydraulic cylinder, the side plates move horizontally and longitudinally, and the large counterweights Extrude and shape in the width direction;

The height extruding mechanism includes an upper hydraulic cylinder and a top plate; several upper hydraulic cylinders are evenly distributed on the upper surface of the forming chamber, and each of the upper hydraulic cylinders is vertically arranged, and its telescopic ends are vertically arranged respectively. It extends straight down to the inside of the forming chamber and connects with the horizontal top plate; driven by the upper hydraulic cylinder, the top plate moves vertically up and down to extrude and shape the large counterweight in the height direction ;

Its pressing method comprises the following steps:

Step 1: First, the equipment is in the initial state, that is, the hydraulic cylinder of the main engine, the lateral hydraulic cylinder, and the upper hydraulic cylinder are all in the state of pressure relief, the pressure plate of the main engine is on the far left, the cover is open, and the door of the forming warehouse is at the bottom;

Step 2: When working for the first time, first insert the pallet vertically into the pallet insertion position, and inject the material required for a single large counterweight at one time from the top of the injection bin through the mobile injection machine;

Step 3: Pressurize the second hydraulic cylinder to drive the half-moon-shaped connecting block to close the cover; then pressurize the hydraulic cylinder of the main engine to drive the pressure plate of the main engine to move horizontally in the direction of the forming chamber, compressing the materials in the injection chamber into the forming chamber until the first An infrared position sensor detects that the right side of the pressing plate of the main machine has moved to position a, and at this time the supporting plate is pressed against the door of the forming chamber;

Step 4: The upper hydraulic cylinder and the lateral hydraulic cylinders on both sides are pressurized successively, respectively driving the top plate and the corresponding side plate to extrude and shape the material in the forming chamber twice, and obtain the semi-finished large-scale counterweight that has been pressed for the first time;

Step 5: Then release the pressure from the lateral hydraulic cylinders on both sides, and pressurize quickly after the corresponding side plate is slightly loosened, so that the corresponding side plate is squeezed on the semi-finished large counterweight again;

Step 6: After the shaping is completed, the hydraulic cylinder of the main engine releases the pressure, driving the pressure plate of the main engine to return to the initial state, and at the same time, the pressure relief of the second hydraulic cylinder drives the half-moon-shaped connecting block to open the compartment cover; then the first hydraulic cylinder pressurizes to drive the forming compartment door Move upwards vertically, and ensure that the position of the door of the forming chamber does not affect the removal of the semi-finished large counterweight from the forming chamber;

Step 7: Then insert the next pallet vertically into the pallet insertion position so that it fits against the left side of the previous semi-finished large counterweight, and then through the mobile injection machine from the top of the injection bin The material required to inject a single large weight;

Step 8: Pressurize the second hydraulic cylinder to drive the half-moon-shaped connecting block to close the cover; then pressurize the hydraulic cylinder of the main engine to drive the pressure plate of the main engine to move horizontally in the direction of the forming warehouse, compress the materials in the injection warehouse into the forming warehouse, and at the same time The semi-finished large counterweight that has been pressed for the first time in the forming chamber is pushed out of the forming chamber;

Step 9: When the second infrared position sensor detects that the right side of the pressure plate of the main machine has moved to position b, the third infrared position sensor detects that the semi-finished large counterweight that has been pressed for the first time is completely pushed out onto the unpowered roller , at this time the hydraulic cylinder of the main engine stops, and the first hydraulic cylinder releases pressure to drive the forming warehouse door to move vertically downward to the bottom;

Step 10: The semi-finished large-scale counterweight that has been pressed for the first time moves forward to the maintenance area through unpowered rollers for maintenance;

Step 11: Then the main engine hydraulic cylinder is pressurized to drive the main engine pressure plate to continue to move horizontally towards the forming chamber, compressing the material in the injection chamber into the forming chamber until the first infrared position sensor detects that the right side of the main engine pressure plate has moved Until the position a, at this time, the supporting plate is pressed against the door of the forming warehouse; repeat the above steps to enter the next cycle.

Preferably, the two bin covers are horizontally covered on the top of the injection bin, and the sum of the areas of the two is consistent with the area of the upper surface of the injection bin; the tail of each second hydraulic cylinder They are respectively vertically hinged to the corresponding positions of the injection bins, and their telescopic ends are respectively inclined upwards to be vertically hinged to the corresponding positions of the outer arc surface of the half-moon-shaped connecting block, and then driven by the second hydraulic cylinder , The opening and closing of the canopy is carried out through the half-moon-shaped connecting block.

Preferably, the area of the door of the forming chamber is larger than the cross-sectional area of the forming chamber, and it is vertically sealed and attached to the right side of the forming chamber to ensure that the material will not overflow during the pressing process; each The tails of the first hydraulic cylinders are all arranged below the outlet of the forming bin, and their telescopic ends are connected vertically upward to the door of the molding bin, and ensure that the telescopic ends of the first hydraulic cylinder are at the limit position of retraction , the forming bin door is located at the bottom.

Preferably, the distance between position a and the door of the forming bin is the sum of the length of a large counterweight and the thickness of the pallet; when the pallet is inserted into the pallet insertion position, its right side is at the same position as position a. in the vertical plane.

Preferably, the position b needs to ensure that when the last large counterweight is completely moved out of the forming chamber, the materials required for pressing the next large counterweight will not affect the closing of the forming chamber door.

Preferably, the actions of each of the main engine hydraulic cylinders are synchronized, and their strokes are greater than the distance between the left inner surface of the injection bin and the position a.

Preferably, the actions of each of the lateral hydraulic cylinders are synchronous, and when the telescopic end is at the limit position of retraction, it is necessary to ensure that the distance between the two side plates is consistent with the width of the large counterweight.

Preferably, the actions of each of the upper hydraulic cylinders are synchronous, and when the telescopic end is at the retracted limit position, it is necessary to ensure that the distance between the top plate and the inner bottom surface of the forming chamber is consistent with the height of the large counterweight.

Preferably, in the above step 4, the time for each extrusion molding is 3 to 5 seconds, and two extrusion moldings are used to ensure that the density of the large counterweight is uniform.

Beneficial effects of the present invention:

(1) The present invention effectively divides the equipment into the injection bin and the molding bin, and utilizes the characteristics of the pressure transfer after molding, and under the action of the hydraulic cylinder of the main engine, the molding counterweight in the molding bin is ejected, reducing the mold It also avoids the defect that the size deviation of the counterweight pressed by different molds is large;

(2) The present invention replaces the traditional mold concrete pouring method, and concentrates injection, compression, removal of the mold box, disassembly of the mold box, cleaning of the mold box, brushing of the mold box, and reset of the mold box into one process; it is produced by the moldless pressing method The large counterweight block effectively shortens the production cycle, and the production efficiency is several times that of the pouring method;

(3) The present invention belongs to integrated equipment, which effectively reduces mold cost and labor cost, improves automation rate, and improves production efficiency compared with pouring equipment;

(4) Compared with the conventional one-time press-molding at the top, the present invention uses two press-molding at the top side to make the density of the counterweight more uniform and the external dimensions more accurate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural view of a mold-free pressing device for preparing large counterweights according to the present invention.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic cross-sectional view of A when the cover of the present invention is closed.

Fig. 4 is a schematic cross-sectional view of section A when the cover of the present invention is opened.

Among them, 1-main engine hydraulic cylinder; 2-cabin cover; 3-lateral hydraulic cylinder; 4-upper hydraulic cylinder; 5-forming warehouse door; 6-unpowered roller; 7-first hydraulic cylinder; 8-forming silo; 9-second hydraulic cylinder; 10-injection silo; 11-pallet insertion position; 12-main engine pressure plate; 13-half-moon connecting block.

Implementation

The technical solutions of the present invention will be clearly and completely described below through specific embodiments.

A mold-free pressing device for preparing large-scale counterweights according to the present invention includes a material injection bin 10, a forming bin 8, a length extrusion mechanism, a bin cover 2, a molding bin door 5, a width extrusion mechanism and a height extrusion mechanism. Mechanism; specific structure as shown in Figures 1 to 4, the injection bin 10 and the forming bin 8 are co-linearly arranged on the left and right, and are integrally formed into a hollow cuboid structure arranged horizontally and horizontally; the upper surface of the injection bin 10 is open, and the two Two bin covers 2 are arranged front and back, and are hinged with the top of the injection bin 10; wherein, two bin covers 2 are horizontally covered on the top of the injection bin 10, and the sum of the areas of the two is the same as that of the injection bin 10. The upper surface area is consistent; on each side of the cover 2 away from the center of the injection bin 10, several half-moon-shaped connecting blocks 13 are vertically arranged at intervals along its length direction, and the arc shape of each half-moon-shaped connecting block 13 The grooves are all clamped on the corresponding edge of the corresponding warehouse cover 2, and the upper end of each half-moon-shaped connecting block 13 is welded and fixed to the upper surface of the corresponding warehouse cover 2 respectively, and its lower end is connected to the front of the injection bin 10 through the heavy-duty hinge respectively. The corresponding position of the outer side or the rear outer side is vertically hinged; between each half-moon-shaped connecting block 13 and the front outer side or the rear outer side of the injection bin 10, a second hydraulic cylinder 9 is vertically inclined, and each first The afterbody of two hydraulic cylinders 9 is respectively vertically hinged with the corresponding position of the injection bin 10, and its telescoping ends are respectively tilted up and vertically hinged with the corresponding position of the outer arc surface of the corresponding half-moon connecting block 13; the present invention is in the second Under the drive of the hydraulic cylinder 9, the opening and closing of the compartment cover 2 is carried out through the half-moon-shaped connecting block 13.

As shown in Fig. 1 and Fig. 2, an unpowered roller 6 is also provided along the lateral direction on the right outer side of the forming bin 8, and the unpowered roller 6 is arranged between the exit of the forming bin 8 and the entrance of the curing area, and is opposite to the forming bin 8. The action of the door 5 does not affect, and the pressed semi-finished large-scale counterweight is moved forward to the maintenance area for maintenance; a third infrared position sensor is also provided between the unpowered roller 6 and the forming chamber 8, and The monitoring end of the third infrared position sensor is set toward the exit direction of the forming chamber 8, and then monitors whether the pressed semi-finished large-scale counterweight is completely moved out of the forming chamber 8.

The right side of the molding bin 8 of the present invention is open, and the molding bin door 5 moves vertically up and down along the molding bin 8 to open and close the molding bin door 5; as shown in Figures 1 to 4, the molding bin The area of the door 5 is greater than the cross-sectional area of the forming chamber 8, and it is vertically sealed and fitted on the right side of the forming chamber 8, and ensures that the material will not overflow during the pressing process; Two first hydraulic cylinders 7 are provided in straight symmetry, and the two first hydraulic cylinders 7 are arranged at intervals on the front and rear sides of the unpowered roller 6; the tail of each first hydraulic cylinder 7 is arranged at the outlet of the forming chamber 8 below, and its telescopic ends are connected vertically upwards with the forming warehouse door 5, and drive the forming warehouse door 5 to move vertically up and down to open and close the forming warehouse door 5, and ensure that the first hydraulic cylinder 7 When the telescopic end was in the limit position of retraction, the forming bin door 5 was at the bottom.

In the present invention, a length extruding mechanism is horizontally provided on the left inner surface of the injection bin 10, and the material is compressed into the forming bin 8 through the length extruding mechanism, and the extrusion molding of the large counterweight in the length direction is performed; wherein, the length The extrusion mechanism includes a main engine hydraulic cylinder 1 and a main engine pressure plate 12; as shown in Figures 1 to 4, several main engine hydraulic cylinders 1 are evenly spaced on the left outer side of the injection bin 10, and each main engine hydraulic cylinder 1 is horizontal. It is arranged horizontally, and its telescopic ends extend vertically to the inside of the injection bin 10, and are connected with the main machine pressure plate 12 vertically and longitudinally; the movements of each main main hydraulic cylinder 1 are synchronized, and their strokes are larger than the left of the injection bin 10. The distance between the inner surface and the position a; in the present invention, under the drive of the main engine hydraulic cylinder 1, the main engine pressure plate 12 moves horizontally and compresses the material into the forming chamber 8, and squeezes the length direction of the large counterweight shaping.

In the present invention, a height extruding mechanism is vertically provided on the inner top surface of the forming chamber 8, and a width extruding mechanism is arranged horizontally and symmetrically on its front and rear inner surfaces, and through the cooperation of the height extruding mechanism and the width extruding mechanism, large-scale Extrusion molding in the height and width direction of the weight block; wherein, the width extrusion mechanism includes a lateral hydraulic cylinder 3 and a side plate; Several lateral hydraulic cylinders 3 are provided, and each lateral hydraulic cylinder 3 is arranged horizontally and vertically, and its telescoping ends extend vertically to the inside of the forming chamber 8, and are connected with corresponding side plates arranged vertically and horizontally; each side The actions of the hydraulic cylinder 3 are all synchronous, and when the telescopic end is in the limit position of the retraction, it is necessary to ensure that the distance between the two side plates is consistent with the width of the large counterweight; Next, the side plates move horizontally and longitudinally to extrude and shape the width of the large counterweight.

As shown in Figures 1 to 4, the height extrusion mechanism includes an upper hydraulic cylinder 4 and a top plate; several upper hydraulic cylinders 4 are evenly distributed on the upper surface of the forming chamber 8, and each upper hydraulic cylinder 4 is vertically arranged. And its telescoping ends extend vertically downwards to the inside of the forming chamber 8 respectively, and are connected with the top plate arranged horizontally; the actions of each upper hydraulic cylinder 4 are synchronized, and when the telescoping ends are at the limit position of retraction, it is necessary to ensure that the top plate The distance between the inner bottom surface of the forming chamber 8 is consistent with the height of the large counterweight; under the drive of the upper hydraulic cylinder 4 in the present invention, the top plate moves vertically up and down, and the height direction of the large counterweight is extruded and molded. shape.

The present invention marks the position a on the left side inside the forming chamber 8, and the distance between the position a and the forming chamber door 5 is the sum of the length of a large counterweight and the thickness of the supporting plate; as shown in Fig. 1 and Fig. 2 As shown, a first infrared position sensor is also provided inside the molding chamber 8 relative to the position a, and through the cooperation of the first infrared position sensor and the main machine platen 12, it is judged whether the length of the large counterweight has been compressed in place; The interior of the warehouse 8 is also provided with a supporting plate insertion position 11 relative to the position a. The supporting plate is a rectangular structure matching the inside of the forming warehouse 8, and is horizontally and laterally slidably connected with the forming warehouse 8; wherein, the supporting plate is inserted into the supporting plate. When the position is 11, and the right side is in the same vertical plane as position a.

As shown in Figure 1 and Figure 2, position b is also marked on the right side of the injection bin 10 relative to the left side of position a, and position b needs to ensure that when the last large counterweight is completely moved out of the molding bin 8, The material required for the next large-scale counterweight pressing does not affect the closing of the forming bin door 5; a second infrared position sensor is also provided in the injection bin 10 relative to the position b, and is passed through the second infrared position sensor and the host computer. The cooperation of pressing plate 12, when judging that molding bin door 5 will be closed again, main engine hydraulic cylinder 1 needs to suspend action, avoids that next large-scale counterweight presses required material and has an impact on the closing of molding bin door 5.

A kind of pressing method of the mold-free pressing equipment that prepares large counterweight block of the present invention, comprises the following steps:

Step 1: First, the equipment is in the initial state, that is, the main engine hydraulic cylinder 1, the lateral hydraulic cylinder 3, and the upper hydraulic cylinder 4 are all in the pressure relief state, the main engine pressure plate 12 is located on the far left, the bin cover 2 is in the open state, and the forming bin door 5 at the bottom.

Step 2: When working for the first time, insert the supporting plate vertically into the supporting plate insertion position 11, and inject the material required for a single large-scale counterweight from the top of the filling bin 10 through a mobile injection machine.

Step 3: pressurize the second hydraulic cylinder 9 to drive the half-moon-shaped connecting block 13 to close the bin cover 2; then pressurize the main engine hydraulic cylinder 1 to drive the main engine pressure plate 12 to move horizontally in the direction of the forming bin 8, compressing the material in the injection bin 10 In the forming chamber 8, until the first infrared position sensor detects that the right side of the main machine pressing plate 12 has moved to the position a, the supporting plate is pressed against the forming chamber door 5 at this moment.

Step 4: Pressurize the upper hydraulic cylinder 4 and the lateral hydraulic cylinders 3 on both sides successively, respectively drive the top plate and the corresponding side plate to extrude and shape the material in the forming chamber 8 twice, and obtain the semi-finished large-scale assembly that has been pressed for the first time. heavy block

In the above steps, the time for each extrusion molding is 3 to 5 seconds, and two extrusion moldings are used to ensure that the density of the large counterweight is uniform. Through the above-mentioned actions, the adhesive force on both sides and side plates of the semi-finished large-scale counterweight in the forming chamber 8 is reduced, so that the semi-finished large-scale counterweight is removed from the forming chamber 8 during the next process.

Conventional one-time pressing and molding of the top is generally used in small-sized counterweights. In the production of large-scale counterweights, the one-time pressing and forming of the top will cause expansion deformation and cannot meet the size requirements. Therefore, the present invention adopts the top And lateral double pressing molding.

Step 5: Then the lateral hydraulic cylinders 3 on both sides are depressurized, and after the corresponding side plate is slightly loosened, the pressure is quickly increased, so that the corresponding side plate is squeezed on the semi-finished large counterweight again.

Step 6: After the shaping is completed, the hydraulic cylinder 1 of the main engine releases the pressure, driving the pressure plate 12 of the main engine to return to the initial state, and at the same time the second hydraulic cylinder 9 releases the pressure to drive the half-moon-shaped connecting block 13 to open the compartment cover 2; then the first hydraulic cylinder 7 adds The pressure drives the forming chamber door 5 to move vertically upwards, and ensures that the position of the forming chamber door 5 does not affect the semi-finished large counterweight to move out from the forming chamber 8.

Step 7: Then insert the next pallet vertically into the pallet insertion position 11 so that it fits against the left side of the previous semi-finished large counterweight, and then through the mobile injection machine from the top of the injection bin 10 Inject as much material as a single large weight in one shot.

Step 8: pressurize the second hydraulic cylinder 9 to drive the half-moon-shaped connecting block 13 to close the bin cover 2; then pressurize the main engine hydraulic cylinder 1 to drive the main engine pressure plate 12 to move horizontally in the direction of the forming bin 8, compressing the material in the injection bin 10 Into the forming chamber 8, at the same time, the semi-finished large-scale counterweight that has been pressed for the first time in the forming chamber 8 is pushed out of the forming chamber 8.

Step 9: When the second infrared position sensor detects that the right side of the main machine pressing plate 12 has moved to position b, the third infrared position sensor detects that the semi-finished large counterweight that has been pressed for the first time is completely pushed out to the unpowered roller 6, at this time the main engine hydraulic cylinder 1 stops moving, and the pressure relief of the first hydraulic cylinder 7 drives the forming warehouse door 5 to move vertically downward to the bottom.

Step 10: The semi-finished large counterweight that has been pressed for the first time moves forward to the maintenance area through the unpowered roller 6 for maintenance.

Step 11: Then the main machine hydraulic cylinder 1 is pressurized to drive the main machine pressure plate 12 to continue to move horizontally towards the forming chamber 8, and compress the material in the injection chamber 10 into the forming chamber 8 until the first infrared position sensor detects the main machine pressure plate 12 The right side of the machine has moved to position a, and now the supporting plate is pressed against the door 5 of the forming warehouse; repeat the above steps to enter the next cycle.

Beneficial effects of the present invention:

(1) The present invention effectively divides the equipment into the injection bin 10 and the forming bin 8, and utilizes the characteristic of pressure transmission after forming, and pushes out the molding counterweight in the molding bin 8 under the action of the main engine hydraulic cylinder 1 , which reduces the production of molds, and also avoids the defect of large size deviation of counterweights pressed by different molds;

(2) The present invention replaces the traditional mold concrete pouring method, and concentrates injection, compression, removal of the mold box, disassembly of the mold box, cleaning of the mold box, brushing of the mold box, and reset of the mold box into one process; it is produced by the moldless pressing method The large counterweight block effectively shortens the production cycle, and the production efficiency is several times that of the pouring method;

(3) The present invention belongs to integrated equipment, which effectively reduces mold cost and labor cost, improves automation rate, and improves production efficiency compared with pouring equipment;

(4) Compared with the conventional one-time press-molding at the top, the present invention uses two press-molding at the top side to make the density of the counterweight more uniform and the external dimensions more accurate.

The above-described embodiments are only described as preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made should fall within the scope of protection of the present invention, and the technical content claimed for protection in the present invention has been fully recorded in the technical requirements.

Claims (9)

1. A pressing method of a mould-free pressing device for preparing a large-scale balancing weight is characterized by comprising the following steps of: the pressing equipment comprises an injection bin, a forming bin, a length extrusion mechanism, a bin cover, a forming bin door, a supporting plate, a width extrusion mechanism and a height extrusion mechanism; the injection bin and the forming bin are arranged in a left-right collinear way and integrally formed into a hollow cuboid structure which is horizontally and transversely arranged; the upper surface of the injection bin is open, and the two bin covers are arranged front and back and are hinged with the top of the injection bin in a split mode; the right side surface of the molding bin is open, and the molding bin door vertically moves up and down along the molding bin to open and close the molding bin door; a length extrusion mechanism is horizontally arranged on the left inner side surface of the injection bin, and materials are compressed into the forming bin through the length extrusion mechanism, so that extrusion molding of the large-scale balancing weight in the length direction is performed; the inner top surface of the forming bin is vertically provided with a height extrusion mechanism, the front inner side surface and the rear inner side surface of the forming bin are horizontally and symmetrically provided with a width extrusion mechanism, and extrusion molding of the large-scale balancing weight in the height and width directions is performed through the cooperation of the height extrusion mechanism and the width extrusion mechanism;

a plurality of half-moon-shaped connecting blocks are vertically arranged at intervals along the length direction of one edge of each bin cover far away from the center of the injection bin, the arc-shaped grooves of each half-moon-shaped connecting block are clamped on the corresponding edge of the corresponding bin cover, the upper end of each half-moon-shaped connecting block is welded and fixed with the upper surface of the corresponding bin cover, and the lower end of each half-moon-shaped connecting block is vertically hinged with the corresponding position of the front outer side surface or the rear outer side surface of the injection bin through a heavy hinge; a second hydraulic cylinder is vertically and obliquely arranged between each half-moon-shaped connecting block and the front outer side surface or the rear outer side surface of the injection bin, and the bin cover is opened and closed through the half-moon-shaped connecting blocks under the driving of the second hydraulic cylinder;

the right outer side of the forming bin is transversely provided with an unpowered roller which is arranged between the forming bin outlet and the curing zone inlet, does not influence the action of the forming bin door, and moves the pressed semi-finished product large-sized balancing weight forward into the curing zone for curing; a third infrared position sensor is arranged between the unpowered roller and the forming bin, and the monitoring end of the third infrared position sensor is arranged towards the outlet direction of the forming bin, so that whether the pressed semi-finished large balancing weight is moved out of the forming bin is monitored;

two first hydraulic cylinders are also vertically and symmetrically arranged on the front side and the rear side of the forming bin gate, and the two first hydraulic cylinders are arranged on the front side and the rear side of the unpowered roller shaft at intervals, so that the forming bin gate is driven to vertically move up and down through the first hydraulic cylinders to open and close the forming bin gate;

a position a is marked on the left side in the forming bin, a first infrared position sensor is arranged in the forming bin relative to the position a, and the length of the large balancing weight is judged whether to be compressed in place or not through the cooperation of the first infrared position sensor and a main machine pressing plate; a supporting plate inserting position is also arranged in the forming bin relative to the position a, and the supporting plate is of a rectangular structure matched with the inside of the forming bin and is horizontally and transversely connected with the forming bin in a sliding manner through the supporting plate inserting position;

a position b is marked on the right side of the inner part of the injection bin relative to the left side of the position a, a second infrared position sensor is arranged in the injection bin relative to the position b, and when the second infrared position sensor is matched with the main machine pressing plate to judge that the forming bin door is to be closed again, the main machine hydraulic cylinder needs to stop action, so that the closing of the forming bin door is prevented from being influenced by the material required by pressing the next large-scale balancing weight;

the length extrusion mechanism comprises a main machine hydraulic cylinder and a main machine pressing plate; a plurality of host hydraulic cylinders are uniformly distributed on the left outer side surface of the injection bin at intervals, each host hydraulic cylinder is horizontally and transversely arranged, and the telescopic ends of the host hydraulic cylinders vertically extend to the inside of the injection bin respectively and are connected with the host pressing plates which are vertically and longitudinally arranged; the main machine pressing plate horizontally and transversely moves under the drive of the main machine hydraulic cylinder, compresses materials into the forming bin, and performs extrusion molding on the length direction of the large-sized balancing weight;

the width extrusion mechanism comprises a lateral hydraulic cylinder and a side plate; a plurality of lateral hydraulic cylinders are respectively and uniformly distributed on the front and rear outer side surfaces of the forming bin at intervals, each lateral hydraulic cylinder is horizontally and longitudinally arranged, and the telescopic ends of the lateral hydraulic cylinders respectively extend to the inside of the forming bin vertically and are connected with the corresponding side plates which are vertically and transversely arranged; the side plates horizontally and longitudinally move under the drive of the lateral hydraulic cylinders, and extrusion molding is carried out on the width direction of the large-scale balancing weights;

the high extrusion mechanism comprises an upper hydraulic cylinder and a top plate; a plurality of upper hydraulic cylinders are uniformly distributed on the upper surface of the forming bin at intervals, each upper hydraulic cylinder is vertically arranged, and the telescopic ends of the upper hydraulic cylinders vertically extend downwards to the inside of the forming bin respectively and are connected with the horizontally arranged top plate; under the drive of an upper hydraulic cylinder, the top plate moves vertically up and down, and extrusion molding is carried out on the height direction of the large-sized balancing weight;

the pressing method comprises the following steps:

step one: firstly, the equipment is in an initial state, namely a main machine hydraulic cylinder, a lateral hydraulic cylinder and an upper hydraulic cylinder are all in a pressure relief state, a main machine pressing plate is positioned at the leftmost side, a bin cover is in an open state, and a forming bin door is positioned at the bottom;

step two: when the device works for the first time, firstly, the supporting plate is vertically inserted into the supporting plate insertion position, and materials required by a single large-scale balancing weight are injected from the top of the material injection bin through the movable material injection machine;

step three: the half-moon-shaped connecting block is driven to close the bin cover by the pressurization of the second hydraulic cylinder; then the main machine hydraulic cylinder is pressurized to drive the main machine pressing plate to horizontally move towards the direction of the forming bin, materials in the material injection bin are compressed into the forming bin until the first infrared position sensor detects that the right side surface of the main machine pressing plate is moved to the position a, and the supporting plate is abutted against the forming bin door;

step four: the upper hydraulic cylinder and the lateral hydraulic cylinders on the two sides are sequentially pressurized, and respectively drive the top plate and the corresponding side plates to extrude and shape the materials in the forming bin twice, so that a semi-finished large balancing weight which is pressed for the first time is obtained;

step five: then the lateral hydraulic cylinders at the two sides are decompressed, and the corresponding side plates are rapidly pressurized after being slightly loosened, so that the corresponding side plates are extruded on the semi-finished large-scale balancing weight again;

step six: after the shaping is finished, the main machine hydraulic cylinder is decompressed to drive the main machine pressing plate to retract to an initial state, and meanwhile, the second hydraulic cylinder is decompressed to drive the half-moon-shaped connecting block to open the bin cover; then the first hydraulic cylinder is pressurized to drive the forming bin gate to vertically move upwards, and the position of the forming bin gate is ensured not to influence the removal of the semi-finished large balancing weight from the forming bin;

step seven: then vertically inserting the next supporting plate into the supporting plate inserting position to enable the next supporting plate to be abutted against the left side of the previous semi-finished large balancing weight, and injecting materials required by a single large balancing weight from the top of an injection bin through a movable material injecting machine;

step eight: the half-moon-shaped connecting block is driven to close the bin cover by the pressurization of the second hydraulic cylinder; then the main machine hydraulic cylinder is pressurized to drive the main machine pressing plate to horizontally move towards the direction of the forming bin, materials in the material injection bin are compressed into the forming bin, and meanwhile, the semi-finished large-scale balancing weight pressed for the first time in the forming bin is ejected out of the forming bin;

step nine: when the second infrared position sensor detects that the right side surface of the main machine pressing plate moves to the position b, the third infrared position sensor detects that the first pressed semi-finished large balancing weight is completely pushed out to the unpowered roller, at the moment, the main machine hydraulic cylinder stops acting, and the first hydraulic cylinder releases pressure to drive the forming bin door to vertically move downwards to the bottom;

step ten: the semi-finished large balancing weight pressed for the first time moves forwards to a curing area through an unpowered roller for curing;

step eleven: then the main machine hydraulic cylinder is pressurized to drive the main machine pressing plate to continuously move horizontally towards the direction of the forming bin, materials in the material injection bin are compressed into the forming bin until the first infrared position sensor detects that the right side surface of the main machine pressing plate moves to the position a, and at the moment, the supporting plate is abutted against the forming bin door; repeating the steps to enter the next round of cycle.

2. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight according to claim 1, wherein the pressing method comprises the following steps of: the two bin covers horizontally cover the top of the injection bin, and the sum of the areas of the two bin covers is consistent with the upper surface area of the injection bin; the tail of each second hydraulic cylinder is vertically hinged with the corresponding position of the injection bin, the telescopic ends of the second hydraulic cylinders are vertically hinged with the corresponding positions of the outer arc surfaces of the half-moon-shaped connecting blocks in an inclined upward mode, and then under the driving of the second hydraulic cylinders, the bin cover is opened and closed through the half-moon-shaped connecting blocks.

3. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight according to claim 1, wherein the pressing method comprises the following steps of: the area of the molding bin gate is larger than the sectional area of the molding bin, and the molding bin gate is vertically and hermetically attached to the right side surface of the molding bin, so that materials are prevented from overflowing in the pressing process; the tail of each first hydraulic cylinder is arranged below the outlet of the forming bin, the telescopic ends of the first hydraulic cylinders are vertically upwards connected with the forming bin door, and the forming bin door is positioned at the bottom when the telescopic ends of the first hydraulic cylinders are positioned at the retraction limit positions.

4. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight according to claim 1, wherein the pressing method comprises the following steps of: the distance between the position a and the forming bin gate is the sum of the length of a large balancing weight and the thickness of the supporting plate; when the supporting plate is inserted into the supporting plate inserting position, the right side surface of the supporting plate is positioned in the same vertical plane with the position a.

5. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight, which is disclosed in claim 4, is characterized in that: and the position b is required to ensure that the closing of the forming bin door is not affected by the material required by pressing the next large-sized balancing weight when the last large-sized balancing weight is completely moved out of the forming bin.

6. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight, which is disclosed in claim 4, is characterized in that: the action of each host hydraulic cylinder is synchronous, and the stroke of each host hydraulic cylinder is larger than the distance between the left inner side surface of the injection bin and the position a.

7. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight according to claim 1, wherein the pressing method comprises the following steps of: and when the telescopic ends of the lateral hydraulic cylinders are positioned at the retraction limit positions, the distance between the two side plates is required to be ensured to be consistent with the width of the large balancing weight.

8. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight according to claim 1, wherein the pressing method comprises the following steps of: and when the telescopic ends of the upper hydraulic cylinders are positioned at the retraction limit positions, the distance between the top plate and the inner bottom surface of the forming bin is required to be ensured to be consistent with the height of the large-scale balancing weight.

9. The pressing method of the die-free pressing equipment for preparing the large-scale balancing weight according to claim 1, wherein the pressing method comprises the following steps of: in the fourth step, the time of each extrusion molding is 3-5 seconds, and the density uniformity of the large-sized balancing weight is ensured through two extrusion molding.