CN115816893A - Metal packing machine - Google Patents

Abstract

The invention provides a metal packing machine, which relates to the technical field of waste metal treatment and comprises a feed box, a door cover assembly, a first pre-compression mechanism, a second pre-compression mechanism, a final-stage compression box and at least one final-stage compression mechanism. The first pre-compression mechanism compresses the material for the first time, the second pre-compression mechanism compresses the material for the second time, and the final compression mechanism further compresses the material for the final time on the basis of the second compression. The first compression and the second compression are located in a bin, and the further final compression is located in a final compression bin. The scheme of this application can effectively solve the rate of utilization that produces after the compressive strength of current traditional baling press is bigger and the problem that work efficiency is low, power is big, equipment cost height etc..

Description

Metal packing machine

Technical Field

The application relates to the technical field of waste metal treatment, in particular to a metal packing machine.

Background

Metal baling is one of the main ways of scrap handling, and referring to fig. one, a metal baling apparatus (hereinafter, simply referred to as a metal baler) commonly used today includes: the compression cylinder I1 and the compression push head I2, the compression cylinder II 3 and the compression push head 4, a door cover 5, a material box 6 and the like, wherein the compression cylinder is generally a hydraulic oil cylinder. The metal baling press's function is exactly that add the material into workbin 6 earlier, compress into a packet piece with it again, and the compression process is: after reinforced completion, door closure 5 is closed and the locking (can play certain pre-compaction effect when expecting much), and first compression mechanism carries out the first compression to the material to compression cylinder 1 and compression push head 2 constitution, and compression cylinder two 3 and compression push head two 4 constitution second compression mechanism carry out ultimate compression to the material, then each compression mechanism and door closure reset, and the packing piece is taken out to the operative employee operation equipment, accomplishes a packing process. The maximum compression force of the metal packer refers to the maximum rated thrust of the final compression cylinder.

In recent years, the maximum compression force of metal baling machines has developed from hundreds of tons to over 2000 tons at present, and as the compression force becomes larger, the following problems become more and more prominent:

the utilization rate and the working efficiency of the first and large-tonnage metal packing machines are lower and lower. The existing metal packer can only stand by to stop working when charging, and the utilization rate is not high all the time. The purpose of increasing the compression force of the large-tonnage metal packing machine is to increase the density and the weight of a single package, which requires more material to be added each time, so that the charging time is longer each time, and the utilization rate of the large-tonnage metal packing machine is lower under the condition that the compression time is basically unchanged. Similarly, the longer the charging time, the longer the total working time to complete a single bale (charging time plus compression time), and the lower the working efficiency.

And the power of a second large-tonnage metal packing machine is also increased more and more, and the capacitance of a common customer site is difficult to meet. The main reason is that after the cylinder diameter of the compression oil cylinder is greatly increased, in order to maintain the same working efficiency, the power of the equipment must be greatly increased, the equipment power of the 2000-ton metal packer on the market is close to about 500kW, and the power of the 2000-ton metal packer is generally increased by several times compared with the power of a small-tonnage metal packer.

Third, large tonnage metal balers are expensive. For one reason, the size of the compression cylinder of a large-tonnage metal packing machine far exceeds the common conventional size, for example, the radial size of the maximum compression cylinder of a metal packing machine with more than 1500 tons exceeds 1000mm, and the compression cylinder needs to be manufactured by adopting a special forging process, so that the cost is very high. Secondly, the structure of the existing metal packer is similar to that of the first drawing, and in the compression process, the smaller the gap between the push head and each wall plate of the material box is, the better the gap is, and the phenomenon that the blockage is caused because the light and thin material is extruded into the gap is avoided. As can be seen from the figure, the compression cylinders are all installed on the bin 6, and the compression force of the compression cylinders is completely borne by the bin, so that the bin wall plate is deformed, and the gap between the pushing head and the wall plate is enlarged.

Disclosure of Invention

The technical problem that this application will be solved lies in, to prior art's the aforesaid not enough, provides a metal baling press.

A metal strapping machine comprising:

the material box comprises a base, two side walls and a front wall, wherein the base is positioned at the bottom of the material box, the two side walls are positioned at opposite positions on two sides of the material box, and the front wall is transversely arranged between the two side walls; the two side walls are a first side wall and a second side wall;

a door assembly capable of opening or closing the chute from above the chute;

a first precompression mechanism comprising: the first compression push head is arranged in the trough, and the first hydraulic cylinder can drive the first compression push head to longitudinally compress the material along the extending direction of the side wall; the advancing direction of the first compression pushing head for compressing the materials is the direction approaching to the front wall;

a second precompression mechanism comprising: the second compression push head is arranged in the trough and close to the front wall, and the second hydraulic cylinder can drive the second compression push head to move from one side of the first side wall to one side of the second side wall along the extending direction of the front wall so as to transversely compress the material; the second hydraulic cylinder is mounted on the first side wall;

a final stage compression box having a final stage compression chamber formed therein;

the final compression mechanism consists of a compression push head arranged in a final compression chamber and a hydraulic cylinder for driving the compression push head to compress materials; the total rated thrust of all hydraulic cylinders contained in any final-stage compression mechanism is greater than the total rated thrust of all first hydraulic cylinders; the total rated thrust of all the hydraulic cylinders included in any one of the final-stage compression mechanisms is larger than the total rated thrust of all the second hydraulic cylinders.

In an improved technical scheme, the number of the final-stage compression mechanisms is one, namely the first final-stage compression mechanism.

In an improved technical solution, the number of the final-stage compression mechanisms is two, that is, the final-stage compression mechanism includes a second final-stage compression mechanism and a third final-stage compression mechanism, and a compression direction of the second final-stage compression mechanism and a compression direction of the third final-stage compression mechanism are perpendicular to each other.

In an improved technical scheme, the final stage compression box is fixedly connected with the second side wall; the second side wall is provided with a first material passing hole for communicating the material groove with the final-stage compression chamber so as to allow compressed materials formed after the second pre-compression mechanism compresses to pass through; the position of the first material passing hole is overlapped with the projection position of the second compression push head on the second side wall along the compression movement direction of the second compression push head;

and a first gate device capable of opening or closing the first material passing hole is further arranged on the second side wall.

In a modified technical scheme, the first gate device comprises a first gate plate matched with the first material passing hole and a first execution element used for driving the first gate plate to act so as to open or close the first material passing hole.

In an improved technical scheme, a discharge port for discharging and a second gate device capable of opening or closing the discharge port are further arranged on the final compression box.

In a modified aspect, the second gate device includes: the second flashboard is matched with the discharge hole, and the second execution element can open or close the discharge hole.

In an improved technical scheme, the final stage compression box is further provided with a material ejecting device for ejecting a compressed material block in the final stage compression chamber from a material outlet.

In a modified solution, the final stage compression box is fixed with the front wall.

In an improved technical scheme, a second material passing hole for communicating the material groove with the final-stage compression chamber to allow a compressed material formed after the second pre-compression mechanism compresses to pass through is formed in the front wall;

and the front wall is also provided with a third gate device capable of opening or closing the second material passing hole.

In this application, after the material adds the completion, first precompression mechanism carries out the first compression to the material, and second precompression mechanism carries out the second compression to the material. And the final compression mechanism further compresses the material on the basis of the second compression. The first compression and the second compression are pre-compression, the final compression mechanism is independent of the bin, and the final compression mechanism can work simultaneously with the next feeding. The technical scheme of the application has the following technical effects:

firstly, according to the general working condition of the existing large-tonnage metal packing machine, only a small compression force is used in the first most compression stroke (perhaps, about 30% of the maximum compression force is used in the first 60% compression stroke), and only in the last few compression stroke stages, the force can be increased sharply, and the time consumption is the longest. In this application, set up the required hydro-cylinder of most compression strokes before the current metal baling press as corresponding precompression jar, set up the required hydro-cylinder of final compression stroke as ultimate compression jar. The final compression cylinder can be charged next time when working, which is equivalent to overlapping part of the working time of each packaging with the charging time of the next time, thereby effectively improving the utilization rate of the metal packaging machine. Meanwhile, in the application, firstly, the pre-compression oil cylinder is greatly reduced, and on the premise of keeping the same working efficiency, the system power required for driving the pre-compression oil cylinder to move can also be greatly reduced. Secondly, when the final compression mechanism works, the final compression mechanism only needs to be synchronously completed with the next feeding process in principle, and the feeding time is longer exactly every time, so the requirement on the movement speed of the final compression cylinder is greatly reduced, and the system power required for driving the final compression mechanism is not high. Compared with the measurement and calculation of a 2000-ton metal packing machine with the same tonnage, the working time (feeding time plus pre-compression time) of a single packing block can be shorter than the existing working time under the condition that the power is saved by about half, and therefore the working efficiency is effectively improved.

The second, this application scheme is that every power large stroke long compression cylinder in current large-tonnage metal baling press all turns into a long little hydro-cylinder of stroke and a short big hydro-cylinder of stroke, and the big hydro-cylinder weight light of stroke is short, and the cost reduces by a wide margin thereupon. In addition, because the precompression cylinder arranged on the feed box is changed into a small oil cylinder, the stress of the feed box is greatly reduced, and the feed box of the existing large-tonnage packing machine can be directly changed into the feed box of the small-tonnage metal packing machine, so that the cost is greatly reduced. In addition, the increased final compression box only needs to contain the pre-compressed materials, so that the volume is small, and the final compression box can be made into a closed structure without a door cover, so that the stress requirement is easily met, and the cost is low. Therefore, the whole structure cost of the packer of the scheme can be reduced compared with the existing large-tonnage metal packer.

To sum up, the method effectively solves the problems of low utilization rate and working efficiency, large power and high cost of the existing large-tonnage metal packing machine.

Drawings

Fig. 1 is a schematic structural view of a prior art metal baler of the background of the present application.

Fig. 2 is a schematic structural diagram of a metal baler in an embodiment of the present application.

Fig. 3 is another schematic view of the structure of the metal baler in the embodiment of the present application.

Fig. 4 is a schematic view of the structure of the metal baler in the final compression box position in the embodiment of the present application.

Fig. 5 is another schematic view of the structure of the metal baler in the embodiment of the present application.

Fig. 6 is another schematic view of the metal baler in the final compression box position in the embodiment of the present application.

Fig. 7 is another schematic view of the structure of the metal baler in the embodiment of the present application.

Detailed Description

The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

The compression force of the traditional metal packer is increased more and more, and the problems of low equipment utilization rate and working efficiency, high power, high cost and the like can be caused. In order to solve the above problems, the present application proposes a metal baler, which is specifically described below with reference to the accompanying drawings.

Referring to fig. 2-7, the metal baler comprises a bin 10, a door assembly 20, a first pre-compression mechanism 30, a second pre-compression mechanism 40, a final compression bin 50, at least one final compression mechanism. Wherein the first precompression mechanism 30 compresses the material a first time and the second precompression mechanism 40 compresses the material a second time. And the final compression mechanism further compresses the material on the basis of the second compression to form a metal packaging block.

The first precompression mechanism 30 includes a first compression ram 31 and a first hydraulic cylinder 32. The second precompression mechanism 40 includes a second compression ram 41 and a second hydraulic cylinder 42. The first hydraulic cylinder 32 is used for driving the first compression pushing head 31, and the second hydraulic cylinder 42 is used for driving the second compression pushing head 41.

The final-stage compression mechanism is composed of a compression ram provided in the final-stage compression chamber 51 and a hydraulic cylinder for driving the compression ram to compress the material. Wherein the total rated thrust of all the hydraulic cylinders included in any one of the final-stage compression mechanisms is greater than the total rated thrust of all the first hydraulic cylinders 32; the total rated thrust of all the hydraulic cylinders included in any one of the final-stage compression mechanisms is larger than the total rated thrust of all the second hydraulic cylinders 42. When there are a plurality of final stage compression mechanisms, the above comparative relationship holds for any of the final stage compression mechanisms.

In the present application, the rated thrust is the thrust generated by the hydraulic cylinder under the rated pressure, and the rated pressure of the hydraulic cylinder is the highest pressure that the hydraulic cylinder can continuously use and is an inherent parameter of the hydraulic cylinder. The total rated thrust is the resultant force of all the hydraulic cylinders on the corresponding mechanism under the rated thrust, and when only one hydraulic cylinder is contained on the corresponding mechanism, the total rated thrust is the rated thrust of a single hydraulic cylinder. Referring specifically to fig. 7, the number of the first hydraulic cylinders 32 is 2, and the total rated thrust is the resultant force of the two first hydraulic cylinders 32 under the rated thrust. The number of the second hydraulic cylinders 42 is 2, and the total rated thrust is the resultant force of the two second hydraulic cylinders 42 at the rated thrust. The number of the fourth hydraulic cylinders 64 is 2, and the total rated thrust is the resultant force of the two fourth hydraulic cylinders 64 at the rated thrust. The number of fifth hydraulic cylinders 66 is 1, and the total rated thrust thereof is the rated thrust of a single fifth hydraulic cylinder 66. Referring to fig. 6, the number of third hydraulic cylinders 62 is 1, and the total rated thrust thereof is the rated thrust of a single third hydraulic cylinder 62.

The metal baler may comprise several final stage compression mechanisms, in particular the number of final stage compression mechanisms may be 1, 2, 3, 4, 5, 8230 \8230;. A typical number may be 1 or 2, i.e. 1 or 2 more compressions of the preliminary packed mass obtained after pre-compression in the final compression chamber 51, as will be exemplified below.

First embodiment

Referring to fig. 2-6, the number of final stage compression mechanisms is one, i.e., the metal baler has only the first final stage compression mechanism 60a, one final stage compression mechanism. The first final-stage compression mechanism 60a performs the third compression, i.e., the final-stage compression, on the material based on the second compression. The first and second compressions are located in the bin 10 and the third compression is located in the final compression bin 50.

The magazine 10 has a trough 11 comprising a base 12 at the bottom of the magazine 10, two side walls 13 at opposite sides of the trough 11, and a front wall 14 lying between the side walls 13. The two sidewalls 13 are specifically a first sidewall 131 and a second sidewall 132.

The upper part of the feed box 10 is open, and materials can be added into the feed chute 11 from the upper part of the feed box 10. The gate assembly 20 can open or close the trough 11 from above the trough 11. When the first pre-compression mechanism 30 and the second pre-compression mechanism 40 compress the materials, the gate cover assembly 20 seals the bin 10 and limits the materials above the bin 11. After the first and second precompression mechanisms 30, 40 have been compressed, the door assembly 20 is opened and material is added.

Referring to fig. 2 and 3, the door assembly 20 includes a door cover plate 21 and a third actuator 22. The door panel 21 is rotatably connected to the material box 10, and specifically, a hinge connection may be used between the door panel 21 and the material box 10. The third actuator 22 is used for driving the door cover plate 21 to act, and under the driving of the third actuator 22, the door cover plate 21 can be rotatably covered above the material box 10 to seal the material groove 11 or rotatably open the material box 10. In particular, the third actuator 22 may be a hydraulic cylinder.

The first precompression mechanism 30 is used for compressing the material for the first time and includes a first compression ram 31 and a first hydraulic cylinder 32. A first compression ram 31 is disposed in the trough 11, and a first hydraulic cylinder 32 is used to drive the first compression ram 31 to compress the material longitudinally along the extension direction of the side wall 13. The direction of the advancing compressed material of the first compression pushing head 31 is the direction approaching to the front wall 14.

The second precompression mechanism 40 is used for compressing the material for the second time based on the first compression, and comprises a second compression pushing head 41 and a second hydraulic cylinder 42. A second compression ram 41 is disposed within the trough 11 adjacent the front wall 14. The second hydraulic cylinder 42 is used for driving the second compression push head 41 to move from the side of the first side wall 131 to the side of the second side wall 132 along the extending direction of the front wall 14 so as to transversely compress the material. The second hydraulic cylinder 42 is mounted on the first side wall 131.

The final stage compression chamber 51 is formed inside the final stage compression box 50. The first final compression mechanism 60a is used for performing a third compression on the material based on the second compression, and the third compression is positioned in the final compression box 50. The first final-stage compression mechanism 60a comprises a third compression push head 61 and a third hydraulic cylinder 62, the third compression push head 61 is arranged in the final-stage compression chamber 51, and the third hydraulic cylinder 62 is used for driving the third compression push head 61 to compress the material in the final-stage compression chamber 51; the total rated thrust of the third hydraulic cylinder 62 is greater than the total rated thrust of the second hydraulic cylinder 42.

Referring to fig. 5, the first compression pusher 31 compresses the material along a first compression direction x, i.e. longitudinally along the extension direction of the side wall 13. The second compressing push head 41 compresses the material along the second compressing direction y, i.e. moves from the side of the first sidewall 131 to the side of the second sidewall 132 along the extending direction of the front wall 14 to compress the material laterally. The third compressing pusher 61 compresses the material in a third compressing direction z.

Further, the working process of the metal packer is as follows: the door assembly 20 is opened to place the bin 10 in an open state, material is then added, and the door assembly 20 is closed to enclose the bin 10 after material addition is complete. Next, the first precompression mechanism 30 compresses the material for a first time, and the first hydraulic cylinder 32 drives the first compression ram 31 to advance to a predetermined position to compress the material for a first time, after the first compression is completed, the material is located between the first compression ram 31 and the front wall 14. At this time, the first compression pushing head 31 is kept still, the second precompression mechanism 40 compresses the material for the second time, and the second hydraulic cylinder 42 drives the second compression pushing head 41 to compress the material transversely along the y direction. After the second compression is completed, the compression process in the bin 10 is completed, and then the first gate device 70 opens the gate 71, the second hydraulic cylinder 42 drives the second compression ram 41 to push the compressed material into the final compression chamber 50 continuously along the y direction, the first compression ram 31 and the second compression ram 41 can start to retract to the initial position for the next compression, the first gate device 70 closes the gate 71, and simultaneously, the gate cover assembly 20 is opened for the material addition of the next compression.

After the first compression and the second compression are completed, the material enters the final-stage compression box 50, the first final-stage compression mechanism 60a performs third compression on the material, and the third hydraulic cylinder 62 pushes the third compression push head 61 to perform third compression on the material, that is, after the final compression, the final packaging block is formed. After the first and second compressions are completed, the operator may proceed to the next charge of material to the bin 10 while the first final compression mechanism 60a performs the final compression within the final compression bin 50.

The final stage compression box 50 can be fixedly connected to the hopper 10, and an openable and closable shutter is provided between the final stage compression chamber 51 and the trough 11. In this way, the material after the second compression in the bin 10 can be directly pushed into the final compression chamber 51 by the first compression pushing head 31 or the second compression pushing head 41 for final compression, so that the continuous automatic processing of the equipment can be realized.

In some embodiments, referring to fig. 2, 3 and 5, the final stage compression box 50 is fixed to the second sidewall 132; the second side wall 132 is provided with a first material passing hole 1321 for communicating the trough 11 with the final-stage compression chamber 51 so as to pass through a compressed material formed after the second pre-compression mechanism 40 compresses; the position of the first material passing hole 1321 overlaps the projection position of the second compression pushing head 41 on the second side wall 132 along the compression movement direction, so that the second compression pushing head 41 can directly push the material into the first material passing hole 1321 and make the material pass through the first material passing hole 1321 and enter the final stage compression chamber 51.

The second sidewall 132 is further provided with a first gate device 70 capable of opening or closing the first material passing hole 1321. After the material is compressed for the second time in the bin 10, the first gate device 70 is opened, and the second hydraulic cylinder 42 drives the second compression pushing head 41 to push the material, so that the material is forced to enter the final compression chamber 51 through the first material passing hole 1321. When the compression of the material is performed in the bin 10 or the final compression box 50, it is necessary to keep the first gate device 70 in a closed state.

Specifically, the first shutter device 70 includes a first shutter 71 and a first actuator. The first gate 71 is adapted to the first material passing hole 1321, and can be used to close the first material passing hole 1321. The first actuator is used for driving the first shutter 71 to act so as to open or close the first material passing hole 1321. The first actuator may be an electric, hydraulic or electric actuator, such as a cylinder or a ram. The opening and closing action of the first shutter 71 may be rotation and translation. In a particular example, as shown in fig. 5, the first shutter 71 is opened and closed by sliding translation on the second side wall 132, the first actuator being in particular a hydraulic cylinder.

Referring to fig. 5, the third compressing pusher 61 compresses the material in the third compressing direction z. A third hydraulic cylinder 62 is installed at one end of the final stage compression box 50 far away from the first material passing hole 1321; the compression movement direction of the third compression pushing head 61 is the direction approaching to the first material passing hole 1321. In the example shown in fig. 5, the second compression direction y of the second compression pusher 41 and the third compression direction z of the third compression pusher 61 are opposite directions, and are both directed toward the first shutter 71 in the closed state.

The third compressing head 61 compresses the material in the final compressing chamber 51, and the final compressing chamber 51 is an elongated sliding channel for the third compressing head 61 to slide and compress the material, and the extending direction of the elongated sliding channel is the same as the third compressing direction z.

Referring to fig. 4 and 5, the final compression box 50 is further provided with a discharge port 52 for discharging, and the material is discharged from the discharge port 52 after the final compression is completed. The discharge hole 52 is further provided with a second gate device 80, and the second gate device 80 is used for opening or closing the discharge hole 52. During the compression of the material, the second gate device 80 is in a closed state, and after the compression of the material is completed, the second gate device 80 is opened to discharge the material.

The second shutter device 80 includes a second shutter 81 and a second actuator 82. The second shutter 81 is adapted to the discharge opening 52, and the second actuator 82 is used for opening or closing the discharge opening 52. The second actuator 82 may be an electric, hydraulic, or electric actuator, such as a cylinder or ram, or other electrically controlled element. The opening and closing actions of the second shutter 81 may be rotation and translation. In a particular example, as shown in fig. 5, the second shutter 81 is opened and closed by sliding translation on the final stage compression box 50, the second actuator 82 being in particular a hydraulic cylinder.

Further, the final stage compression box 50 is provided with an ejector 90 for ejecting the compressed material block in the final stage compression chamber 51 from the discharge port 52. The material ejecting device 90 is a length expansion device, and may be a pneumatic device, a hydraulic device, an electric device, such as an air cylinder, an oil cylinder, an electric screw expansion device, or the like.

In an alternative embodiment, final stage compression box 50 is fixed with front wall 14. The front wall 14 is provided with a second material passing hole for communicating the trough 11 with the final compression chamber 51 to pass through the compressed material formed by the compression of the second precompression mechanism 40. The front wall 14 is further provided with a third gate device capable of opening or closing the second material passing hole. Similar to the case where the final-stage compression box 50 is disposed on the side of the second side wall 132, when the second precompression mechanism 40 retracts after compression, the third gate device opens, the first hydraulic cylinder 32 drives the first compression ram 31 to push the material, the material is forced to enter the final-stage compression chamber 51 through the second material passing hole, and then the third gate device closes so that the first final-stage compression mechanism 60a performs final compression on the material. The third gate device is similar to the first gate device 70, and includes a third gate and a fourth actuator for driving the third gate, which can be referred to the description of the first gate device 70 and will not be described herein.

In the present application, the first actuator, the second actuator, the third actuator and the fourth actuator may be electric actuators, hydraulic actuators or electric actuators, such as air cylinders or oil cylinders.

In the present application, after the material is added, the first pre-compression mechanism 30 compresses the material for the first time, the second pre-compression mechanism 40 compresses the material for the second time, and the first final-stage compression mechanism 60a compresses the material for the third time on the basis of the second compression, i.e., final-stage compression.

Second embodiment

Referring to fig. 2 to 7, the number of the final-stage compression mechanisms is two, that is, the metal baler has two final-stage compression mechanisms, a second final-stage compression mechanism 60b and a third final-stage compression mechanism 60c, and the compression direction of the second final-stage compression mechanism 60b and the compression direction of the third final-stage compression mechanism 60c are perpendicular to each other.

The working process of the metal packer is as follows: the door assembly 20 is opened to place the bin 10 in an open state, material is then added, and the door assembly 20 is closed to enclose the bin 10 after material addition is complete. Next, the first precompression mechanism 30 compresses the material for a first time, and the first hydraulic cylinder 32 drives the first compression ram 31 to advance to a predetermined position to compress the material for a first time, after the first compression is completed, the material is located between the first compression ram 31 and the front wall 14. At this time, the first compression pushing head 31 is kept still, the second precompression mechanism 40 compresses the material for the second time, and the second hydraulic cylinder 42 drives the second compression pushing head 41 to compress the material transversely along the y direction. After the second compression is completed, the compression process in the bin 10 is completed, and then the first gate device 70 opens the gate 71, the second hydraulic cylinder 42 drives the second compression ram 41 to push the compressed material into the final compression chamber 50 continuously along the y direction, the first compression ram 31 and the second compression ram 41 can start to retract to the initial position for the next compression, the first gate device 70 closes the gate 71, and simultaneously, the gate cover assembly 20 is opened for the material addition of the next compression.

After the first compression and the second compression are completed, the primary packed block is formed and enters the final stage compression box 50, and the second final stage compression mechanism 60b and the third final stage compression mechanism 60c perform final compression on the primary packed block twice to form a final packed block.

Specifically, the second final-stage compression mechanism 60b includes a fourth compression ram 63 and a fourth hydraulic cylinder 64. The third final-stage compression mechanism 60c includes a fifth compression ram 65 and a fifth hydraulic cylinder 66. First, under the driving of the fourth hydraulic cylinder 64, the fourth compression pushing head 63 advances to a predetermined position to perform the first final compression on the material. Then, the fourth compression pushing head 63 is kept still, and the fifth compression pushing head 65 performs the second final compression on the material under the driving of the fifth hydraulic cylinder 66. It should be understood that the operation processes of the second final-stage compression mechanism 60b and the third final-stage compression mechanism 60c are similar to the operation processes of the first precompression mechanism 30 and the second precompression mechanism 40, and thus are not described in detail herein.

After two final compressions, the final packed mass is formed. After the first and second compressions are completed, the operator may proceed to the next charge of material to the bin 10 while the second and third final compression mechanisms 60b, 60c perform final compression within the final compression box 50.

It should be understood that only the portions different from the first embodiment are specifically described above. Other related contents may specifically refer to the contents of the first embodiment, and other related technical features in the first embodiment may be equally applicable to the technical solution of the second embodiment.

Further, referring to fig. 4, the final stage compression box 50 may be provided with a second gate device 80, so that the bale blocks in the final stage compression box 50 can be directly pushed out. In a second embodiment, referring to fig. 7, the bale in the final stage compression box 50 can be pushed out using the fourth compression ram 63 of the second final stage compression mechanism 60 b.

In some embodiments, the final stage compression box 50 may not have the discharge port 52 and the second gate device 80, and after the packing is completed, the final stage compression mechanism is directly used to push the packed blocks back to the bin 10 through the first material passing hole 1321 or the second material passing hole. Specifically, after the final compression mechanism in the final compression box 50 and the two pre-compression mechanisms in the bin 10 complete compression simultaneously, the first gate device 70 of the first material passing hole 1321 opens, the final compression mechanism pushes the bale back into the bin 10, the gate assembly 20 opens, and the pre-compressed bale is pushed into the final compression box 50 after being directly removed from the bin 10. Further, if the final-stage compression mechanism is arranged as shown in fig. 7, the third final-stage compression mechanism 60c can be used for pushing the bale, and the pushing direction of the fifth compression ram 65 needs to be aligned with the first material passing hole 1321.

In this application, after the material adds the completion, first precompression mechanism carries out the first compression to the material, and second precompression mechanism carries out the second compression to the material. And the final compression mechanism further compresses the material on the basis of the second compression. The first compression and the second compression are pre-compression, and the final compression mechanism is independent of the bin and can work simultaneously with the next feeding. In the technical scheme of the application, each embodiment has the following technical effects, and only the differences in the effect degree exist:

firstly, according to the general working condition of the existing large-tonnage metal packing machine, only a small compression force is used in the first most compression stroke (perhaps, about 30% of the maximum compression force is used in the first 60% compression stroke), and only in the last few compression stroke stages, the force can be increased sharply, and the time consumption is the longest. In this application, set up the required hydro-cylinder of most compression strokes before the current metal baling press as corresponding precompression jar, set up the required hydro-cylinder of final compression stroke as ultimate compression jar. The final compression cylinder can be charged next time when working, which is equivalent to overlapping part of the working time of each packaging with the charging time of the next time, thereby effectively improving the utilization rate of the metal packaging machine. Meanwhile, in the application, firstly, the pre-compression oil cylinder is greatly reduced, and on the premise of keeping the same working efficiency, the system power required for driving the pre-compression oil cylinder to move can also be greatly reduced. Secondly, when the final compression mechanism works, the final compression mechanism only needs to be synchronously completed with the next feeding process in principle, and the feeding time is longer exactly every time, so the requirement on the movement speed of the final compression cylinder is greatly reduced, and the system power required for driving the final compression mechanism is not high. Compared with the measurement and calculation of a 2000-ton metal packing machine with the same tonnage, the working time (feeding time plus pre-compression time) of a single packing block can be shorter than the existing working time under the condition that the power is saved by about half, and therefore the working efficiency is effectively improved.

The second, this application scheme is that every power large stroke long compression cylinder in current large-tonnage metal baling press all turns into a long little hydro-cylinder of stroke and a short big hydro-cylinder of stroke, and the big hydro-cylinder light in stroke is short, and the cost reduces along with increasing substantially. In addition, because the precompression cylinder arranged on the feed box is changed into a small oil cylinder, the stress of the feed box is greatly reduced, and the feed box of the existing large-tonnage packing machine can be directly changed into the feed box of the small-tonnage metal packing machine, so that the cost is greatly reduced. In addition, the increased final compression box only needs to contain the pre-compressed materials, so that the volume is small, and the final compression box can be made into a closed structure without a door cover, so that the mechanical property is better, the stress requirement is easily met, and the cost is not high. Therefore, the overall structure cost of the packer of the scheme can be reduced compared with the existing large-tonnage metal packer.

To sum up, the method effectively solves the problems of low utilization rate and working efficiency, large power and high cost of the existing large-tonnage metal packing machine.

In the embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

In the description of the present application, it is to be understood that the terms "bottom," "upper," and the like refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.

Claims (10)

1. A metal strapping machine, comprising:

the material box (10) is provided with a material groove (11) and comprises a base (12) positioned at the bottom of the material box (10), two side walls (13) positioned at opposite positions on two sides of the material groove (11) and a front wall (14) transversely arranged between the two side walls (13); the two side walls (13) are a first side wall (131) and a second side wall (132);

a door assembly (20), the door assembly (20) being capable of opening or closing the trough (11) from above the trough (11);

a first pre-compression mechanism (30) comprising: the first compression push head (31) is arranged in the trough (11), and the first hydraulic cylinder (32) can drive the first compression push head (31) to longitudinally compress the materials along the extending direction of the side wall (13); the advancing direction of the first compression pushing head (31) for compressing the materials is the direction approaching to the front wall (14);

a second precompression mechanism (40) comprising: the second compression push head (41) is arranged in the trough (11) and close to the front wall (14), and the second hydraulic cylinder (42) can drive the second compression push head (41) to move from one side of the first side wall (131) to one side of the second side wall (132) along the extending direction of the front wall (14) so as to transversely compress the materials; the second hydraulic cylinder (42) is mounted on the first side wall (131);

a final stage compression box (50) in which a final stage compression chamber (51) is formed;

the final-stage compression mechanism is composed of a compression push head arranged in a final-stage compression chamber (51) and a hydraulic cylinder for driving the compression push head to compress materials; wherein the total rated thrust of all the hydraulic cylinders included in any one of the final-stage compression mechanisms is greater than the total rated thrust of all the first hydraulic cylinders (32); the total rated thrust of all the hydraulic cylinders included in any one of the final-stage compression mechanisms is larger than the total rated thrust of all the second hydraulic cylinders (42).

2. The metal baler according to claim 1, characterized in that the number of final compression mechanisms is one, namely the first final compression mechanism (60 a).

3. The metal baler according to claim 1, characterized in that the number of final compression mechanisms is two, i.e. comprising a second final compression mechanism (60 b) and a third final compression mechanism (60 c), and the compression direction of the second final compression mechanism (60 b) and the compression direction of the third final compression mechanism (60 c) are perpendicular to each other.

4. The metal baler according to claim 1, characterized in that the final compression box (50) is fixed to the second side wall (132); the second side wall (132) is provided with a first material passing hole (1321) for communicating the material groove (11) with the final compression chamber (51) so as to allow a compressed material formed after the second pre-compression mechanism (40) compresses to pass through; the position of the first material passing hole (1321) is overlapped with the projection position of the second compression push head (41) on the second side wall (132) along the compression movement direction of the second compression push head;

the second side wall (132) is also provided with a first gate device (70) capable of opening or closing the first material passing hole (1321).

5. The metal baler according to claim 4, characterized in that the first shutter means (70) comprises a first shutter (71) adapted to the first through hole (1321) and a first actuator for actuating the first shutter (71) to open or close the first through hole (1321).

6. The metal baler according to claim 1, characterized in that the final compression box (50) is further provided with a discharge opening (52) for discharging, and a second shutter device (80) capable of opening or closing the discharge opening (52).

7. Metal baler according to claim 6, characterized in that said second shutter means (80) comprise: a second shutter (81) adapted to the outlet (52), and a second actuator (82) capable of opening or closing the outlet (52).

8. The metal baler according to claim 7, characterized in that the final compression box (50) is further provided with an ejector (90) for ejecting the mass of compressed material in the final compression chamber (51) from the discharge opening (52).

9. The metal baler according to claim 1, characterized in that the final compression box (50) is fixed together with the front wall (14).

10. The metal baler according to claim 9, characterized in that the front wall (14) is provided with a second feed hole for communicating the chute (11) with the final compression chamber (51) for passing through the compressed material formed after compression by the second pre-compression mechanism (40);

and a third gate device capable of opening or closing the second material passing hole is further arranged on the front wall (14).

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