Hydraulic baler for metal scrap

Abstract

The application relates to the technical field of presses, in particular to a hydraulic packing machine for metal waste, which comprises a frame, an upper pressing plate, a compression mechanism and a cleaning mechanism, the frame comprises a bottom plate and multiple side plates, the compression mechanism comprises a main pressing assembly and a side pressing assembly, the main pressing assembly comprises a main hydraulic cylinder and a main pressing head, the cleaning mechanism comprises a connecting piece, an elastic piece, a reset block and multiple movable strips, a connecting plate is arranged on the upper side of the bottom plate, the main pressing head slides against the connecting plate, the connecting piece is connected with the bottom plate through the elastic piece, a plurality of connecting grooves are arranged on the connecting plate, and each movable strip extends into the upper side of the connecting piece through each connecting groove; the front side end surface of the movable strip is a vertical surface, the rear side end surface of the movable strip is inclined from the bottom to the top to the front side; the height of the reset block is greater than the height of the movable strip, the main pressing head is in movable abutment with the reset block, and when the main pressing head retreats backward, the movable strip moves downward through the downward pressing block, and the packing machine promotes the separation of impurities and metal waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressing machines, in particular to a hydraulic packing machine for metal scrap. BACKGROUND

[0002] The extrusion packing of metal scrap is an important link in the process of scrap metal recycling and reuse. The metal scrap is usually irregular in shape and large in volume. In related technologies, a hydraulic metal packing machine is often used to compress the metal scrap into regular blocks, so as to greatly reduce the volume of the metal scrap, facilitate loading, unloading and transportation, and also facilitate subsequent smelting and other processing processes. The metal scrap may contain some impurities (such as sand particles, stone blocks, glass, etc.). The physical properties (such as hardness and elasticity) of these impurities are different from those of the metal scrap, which may form uneven stress points during compression, resulting in uneven compression of the metal scrap, and some areas may not achieve the ideal density and shape. The presence of impurities also affects the flowability and compressibility of the metal scrap during compression, resulting in irregular shape of the compressed metal block and affecting the packing quality.

[0003] The patent document with the authorized announcement number CN112776406B discloses a packing machine for recycling of construction scrap metal, which comprises a compression tank, a hydraulic pressing plate, a hydraulic compression component and a hydraulic head. The right side top of the compression tank is movably connected with the right side bottom of the hydraulic pressing plate. The right side bottom of the compression tank is movably connected with the right side outer wall of the hydraulic compression component. The left side of the hydraulic compression component is movably connected with the left side of the hydraulic head. The packing machine provided by the patent document combines the compression tank, the hydraulic pressing plate and the hydraulic compression component, and uses the gravitational potential energy to remove the stone particles falling during the extrusion of the scrap metal, and simultaneously cleans the stone particles in time to prevent the accumulation of stone particles and other debris in the compression tank.

[0004] In actual production, there are many types of metal scrap. The packing machine provided by the above patent document is used to compress the metal debris generated by the demolition of buildings. The construction scrap metal is mainly composed of scrap steel bars. When the packing machine extrudes the scrap steel bars, the impurities such as stone blocks are easily dropped from the gaps of the steel bars to the bottom of the compression tank, which facilitates subsequent collection. However, when the packing machine is used to compress scrap metal such as iron filings or iron wires, the impurities are easily blocked and difficult to fall to the bottom of the compression tank, resulting in unsatisfactory removal effect of the impurities during compression of the metal scrap, and further affecting the packing effect of the metal scrap. SUMMARY

[0005] The present application provides a hydraulic packing machine for metal scrap, which aims to solve the problem that the impurities in the metal scrap are difficult to separate when the packing machine in related technologies compresses and packs the scrap metal, and the impurities affect the compression effect of the metal block when the impurities are compressed together with the metal scrap.

[0006] The hydraulic packing machine for metal scrap of the present application comprises a frame, an upper pressing plate and a compression mechanism arranged in the frame, the frame comprises a horizontally arranged bottom plate and a plurality of vertically arranged side plates, the compression mechanism comprises a main pressing assembly and a side pressing assembly, the main pressing assembly comprises a main hydraulic cylinder and a main pressing head, a cleaning mechanism is further arranged in the frame, the cleaning mechanism comprises a connecting piece, an elastic piece, a reset block and a plurality of movable strips, a connecting plate is fixed in parallel on the upper side of the bottom plate, the main pressing head slides against the connecting plate, the connecting piece is between the connecting plate and the bottom plate, the connecting piece is connected with the bottom plate through the elastic piece, a plurality of connecting grooves corresponding to the movable strips are arranged on the connecting plate, each movable strip extends into the upper side of the connecting piece through the connecting groove, and the movable strips are arranged in intervals along the moving direction of the main pressing head; the side facing the extrusion direction of the main pressing head is the front side, the front end surface of the movable strip is a vertical surface, and the rear end surface of the movable strip is inclined from bottom to top towards the front side; the reset block is located at the rear side of each movable strip, the height of the reset block is greater than the height of the movable strip, the main pressing head is in movable abutment with the reset block, and a pressing block is arranged at the rear side of the lower end of the main pressing head, and the pressing block presses the movable strip to move downward when the main pressing head retreats backward.

[0007] The beneficial effects are that the separation of impurities in the metal scrap compression and packaging operation is promoted, and the packaging effect of the metal scrap is improved, the main pressing assembly cooperates with the cleaning mechanism, when the metal scrap is extruded, the main hydraulic cylinder drives the main pressing head to move in the frame and extrude the metal scrap, the main pressing head moves against the connecting plate and is in interval contact with each movable strip, and the movable strip moves downward, the connecting piece moves downward as a whole and extrudes the elastic piece to store power when the movable strip moves downward, the reset piece drives the connecting piece to move upward and reset when the main pressing head passes one movable strip, each movable strip quickly pops out from the connecting groove and knocks the metal scrap, and each movable strip knocks the metal scrap in intervals when the main pressing head compresses the metal scrap, which effectively promotes the separation of impurities from the metal scrap and facilitates the falling of impurities on the connecting plate, the impurities fall between the movable strip and the connecting groove when the movable strip moves downward, and a gap is formed between the movable strip and the connecting groove when the main pressing head resets to push the reset block to move downward, so that the impurities fall between the connecting plate and the bottom plate, facilitating the subsequent collection and discharge of the impurities; in addition, the contact position and angle of the metal scrap and the main pressing head are changed when the movable strip knocks the metal scrap in intervals, which avoids the problem of serious local wear of the main pressing head and is beneficial to prolong the service life of the packing machine.

[0008] Preferably, the pressing block is connected with the main pressing head through a reset piece, the rear end surface of the pressing block is inclined from top to bottom towards the front, and the inclined surface end of the pressing block is in movable abutment with the movable strip.

[0009] The beneficial effect is that the normal return of the main pressing head is ensured, the inclined end of the lower pressing block abuts against the straight side of the movable strip when the main pressing head is reset, and the movable strip is pressed to move downward, so that the movable strip does not block the return of the main pressing head, and the normal cycle operation of the packing machine is ensured.

[0010] Preferably, the rear side of the connecting groove is inclined to form a guide portion.

[0011] The beneficial effect is that the inclined guide portion facilitates temporary storage of the falling impurities, the connecting groove is recessed at the position of the guide portion, the impurities are pushed into the guide portion when the main pressing head slides against the connecting plate, the reset block is fully moved downward when the main pressing head is reset, a gap is formed between the movable strip and the connecting groove, and the impurities in the guide portion slide along the inclined direction of the guide portion to the connecting groove and further fall through the gap between the connecting groove and the movable strip to the space between the connecting plate and the bottom plate.

[0012] Preferably, the front side end surface of the reset block is inclined from bottom to top to the rear side, and the rear end of the main pressing head movably abuts against the front side end surface of the reset block.

[0013] The beneficial effect is that the reset block is smoothly pushed downward during the return of the main pressing head, the main pressing head contacts the front side end surface of the reset block when the main pressing head returns, the reset block is pressed to move downward when the main pressing head contacts the front side end surface of the reset block, the connecting member is integrally moved downward, a gap for impurity falling is formed between the movable strip and the connecting groove, and the collection of impurities is facilitated.

[0014] Preferably, the frame body is further provided with a pressing mechanism, the pressing mechanism includes a pressing plate, a pressing rod and a transmission assembly, the pressing rod is vertically arranged, the pressing plate is connected with the upper end of the pressing rod, the pressing rod is elastically connected with the frame body in the vertical direction, and the transmission assembly pushes the pressing plate to move downward in the gap between the front side plate of the frame body and the main pressing head.

[0015] The beneficial effect is that the generation of burrs during the packing of metal waste is reduced, and the packing quality of the metal waste is further improved, the pressing plate is pushed to move downward in the gap between the frame body and the pressing plate by the transmission assembly when the main pressing head is pressed against the metal waste, the burrs of the metal waste are avoided in the gap between the frame body and the pressing plate, the overall degree of the packed metal block is further improved, and the influence of the burrs on the subsequent stacking and transportation of the metal block is avoided.

[0016] Preferably, a guide rod is fixed on the connecting piece, the guide rod is parallel to the pressing rod, the transmission assembly comprises a mounting plate, a connecting seat, a connecting shaft, a gear one and a gear two, the mounting plate is fixed on the front side of the frame body, the connecting seat is elastically connected with the mounting plate in the horizontal direction, the connecting shaft is rotatably arranged on the connecting seat, the gear one is unidirectionally rotatably connected with the connecting shaft, the gear two is fixed with the connecting shaft and unidirectionally rotatably connected with the connecting seat, the guide rod is provided with a tooth part one, the pressing rod is provided with a tooth part two, the gear one is engaged with the tooth part one, and the gear two is engaged with the tooth part two.

[0017] The beneficial effect is that the flexibility of the metal waste at the extrusion gap of the extrusion plate is improved, the guide rod, the pressing rod, the connecting shaft and the gear one and the gear two are matched, the main pressing head extrudes the metal waste while the extrusion plate interval moves downward to extrude the metal waste at the gap between the pressing plate and the front side plate of the frame body, the extrusion strength of the metal waste at the gap is ensured, and the quality of the metal waste after extrusion is improved.

[0018] Preferably, the upper end of the guide rod is provided with a reset part, the reset part is inclined from top to bottom to the rear side, and when the main pressing head extrudes the reset block to completely move downward, the reset part abuts against the gear one and pushes the gear one to move to the front side.

[0019] The beneficial effect is that the reset part is arranged, the downward movement of the extrusion plate is facilitated after one-time compression work is completed, the extrusion reset block moves downward when the main pressing head is reset, the guide rod moves downward to abut against the gear one and push the gear one to move to the front side, that is, the whole connecting seat moves to the front side, the gear two is separated from the tooth part two, the pressing rod is reset under the elastic action, and the extrusion plate is reset.

[0020] Preferably, the upper end of the inner side of the front side plate is inclined from top to bottom to the rear side, the extrusion plate moves downward to fit the inclined section of the side plate, and the extrusion plate is elastically connected with the pressing rod in the horizontal direction.

[0021] The beneficial effect is that the interference of the extrusion plate on the buckling action of the pressing plate in the initial state is avoided, the extrusion plate is located on the upper side of the inclined section of the front side plate in the initial state, the pressing plate does not contact the extrusion plate when buckling, and the extrusion plate enters the gap between the pressing plate and the front side plate only after passing through the inclined section of the front side plate.

[0022] Preferably, the side pressing assembly comprises a side pressing head and a side hydraulic cylinder, the extending end of the side hydraulic cylinder is fixed with the side pressing head, and each movable strip avoids the movement space of the side pressing head.

[0023] The setting range of each movable strip avoids the moving path of the side pressing head, can effectively avoid the interference of the movable strip to the extrusion work of the side pressing head, and ensures the normal operation of the side pressing assembly.

[0024] Preferably, the frame body is further provided with a discharging mechanism, the discharging mechanism comprising a driving structure and a discharging push plate, the driving structure driving the discharging push plate to rotate.

[0025] The beneficial effect is that the automation of the packing machine is improved, and after the metal waste is extruded in the frame body, the driving structure drives the discharging push plate to rotate, and the discharging push plate pushes the compressed metal block to the outside of the frame body.

[0026] The beneficial effect of the present application is that:

[0027] (1) The separation of impurities in the metal waste compression and packing operation is promoted, and the packing effect of the metal waste is improved. The main pressure assembly cooperates with the cleaning mechanism. When the metal waste is extruded, the main hydraulic cylinder drives the main pressure head to move in the frame body and extrude the metal waste. When the main pressure head moves with the connecting plate, it is in contact with each movable strip and extrudes the movable strip to move downward. When the movable strip moves downward, the connecting piece moves downward as a whole and extrudes the elastic piece to store power. When the main pressure head passes one movable strip, the reset piece drives the connecting piece to move upward and reset. Each movable strip quickly pops out of the connecting groove and knocks the metal waste. When the main pressure head compresses the metal waste, each movable strip knocks the metal waste at intervals, effectively promoting the separation of impurities from the metal waste, and facilitating the falling of impurities onto the connecting plate. When the movable strip moves downward, the impurities fall between the movable strip and the connecting groove. When the main pressure head resets to the push reset block and moves downward, a gap is formed between the movable strip and the connecting groove. The impurities fall between the connecting plate and the bottom plate, facilitating the subsequent collection and discharge of the impurities. In addition, when the movable strip knocks the metal waste at intervals, it is also convenient to change the contact position and angle of the metal waste with the main pressure head, avoiding the problem of serious local wear of the main pressure head, and facilitating the extension of the overall service life of the packing machine.

[0028] (2) Reduce the generation of burrs when packing metal waste, further improve the packing quality of metal waste, when the main pressure head extrudes the metal waste, through the transmission assembly, the extrusion plate is pushed to move downward at the gap between the frame and the lower pressing plate, avoiding the generation of burrs at the gap between the frame and the lower pressing plate, further improving the overall degree of metal block packing, avoiding the influence of burrs on the subsequent stacking and transportation of metal block, in addition, through the cooperation of the guide rod, the lower pressing rod, the connecting shaft and the gear one and the gear two, when the main pressure head extrudes the metal waste, the extrusion plate moves downward at intervals to extrude the metal waste at the gap between the lower pressing plate and the front side plate of the frame, ensuring the extrusion strength of the metal waste at the gap, and further improving the quality of the extruded metal waste. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the left view of the present application.

[0030] Figure 2 is the top view of the present application.

[0031] Figure 3 is the structure diagram of the inside of the frame body in the present application.

[0032] Figure 4 is the structure diagram of the connection between the cleaning mechanism and the pressing mechanism in the present application.

[0033] Figure 5 is the structure diagram of the pressing mechanism in the present application.

[0034] Figure 6 is the structure diagram of the connection between the main pressing head and the pressing block in the present application.

[0035] Figure 7 is the structure diagram of the connection between the main pressing head and the pressing block in the present application.

[0036] Reference signs:

[0037] 1, frame body; 11, hydraulic cylinder; 111, upper pressing plate; 12, main hydraulic cylinder; 121, main pressing head; 122, pressing block; 13, side hydraulic cylinder; 131, side pressing head; 14, discharging push plate; 141, driving structure; 15, bottom plate; 2, connecting plate; 21, connecting piece; 22, movable strip; 221, guide part; 23, elastic piece; 24, guide rod; 241, tooth part one; 242, reset part; 25, reset block; 3, extrusion plate; 31, pressing rod; 311, tooth part two; 32, connecting seat; 321, gear one; 322, gear two; 323, connecting shaft; 33, mounting plate. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0039] As shown in Figures 1 to 3 The hydraulic packing machine for metal waste provided by the present application comprises a frame body 1, an upper pressing plate 111, a compression mechanism, a cleaning mechanism and a discharging mechanism. The frame body 1 comprises a horizontally arranged bottom plate 15 and four vertically arranged side plates, each of which surrounds a rectangular frame shape, and a compression cavity for compressing metal waste is formed inside the frame body 1. The upper pressing plate 111 is connected with a hydraulic cylinder 11, which pushes the upper pressing plate 111 to rotate relative to the frame body 1 and buckle at the upper end of the compression cavity, preventing the metal waste from overflowing during the compression process. The compression mechanism extrudes the metal waste put into the compression cavity.

[0040] The compression mechanism comprises a main compression assembly and a side compression assembly. The main compression assembly comprises a main hydraulic cylinder 12 and a main compression head 121. The main hydraulic cylinder 12 is installed on the frame 1 and pushes the main compression head 121 to move along the length direction of the frame 1 in the compression cavity and compress the metal scrap. The side compression assembly comprises a side hydraulic cylinder 13 and a side compression head 131. The side hydraulic cylinder 13 is installed on the frame 1 and pushes the side compression head 131 to compress the metal scrap along the width direction of the frame 1 in the compression cavity. After the metal scrap is packed into regular metal blocks, the metal blocks are pushed out of the compression cavity by the discharging mechanism. The discharging mechanism comprises a driving structure 141 and a discharging push plate 14. The discharging push plate 14 can be an "L" shaped plate. The driving structure 141 is installed on the frame 1. The driving end of the driving structure 141 is connected with the discharging push plate 14 and drives the discharging push plate 14 to rotate. When the discharging push plate 14 rotates, the metal blocks are pushed out of the compression cavity.

[0041] As shown in Figure 3 and Figure 4 The cleaning mechanism is used to cooperate with the compression mechanism during the compression of the metal scrap and separate and remove the impurities on the metal scrap in time, so as to reduce the influence of the impurities on the packing effect of the metal scrap during the compression of the metal scrap. The cleaning mechanism comprises a connecting piece 21, an elastic piece 23, a reset block 25 and a plurality of movable strips 22. A connecting plate 2 is fixed in the frame 1 and is horizontally arranged on the upper side of the bottom plate 15. The main compression head 121 slides against the connecting plate 2. The connecting piece 21 is located between the connecting plate 2 and the bottom plate 15. The connecting piece 21 is connected with the bottom plate 15 through the elastic piece 23. The elastic piece 23 can comprise but is not limited to a spring and an elastic telescopic rod. A plurality of elastic pieces 23 can be arranged. Each elastic piece 23 is evenly arranged between the connecting piece 21 and the bottom plate 15. Under the elastic force of the elastic piece 23, the upper end surface of the elastic piece 23 is attached to the lower end surface of the connecting plate 2. The connecting piece 21 can be a mesh plate or a frame. Each movable strip 22 is fixed on the upper end surface of the connecting piece 21. The connecting piece 21 and each movable strip 22 can be an integral structure. Each movable strip 22 is evenly arranged along the moving direction of the main compression head 121. Each movable strip 22 is arranged to avoid the moving path of the side compression head 131. The connecting plate 2 is provided with a plurality of connecting grooves. Each connecting groove corresponds to each movable strip 22 in the vertical direction. Each movable strip 22 extends into the upper side of the connecting plate 2 through each connecting groove.

[0042] The front side of the movable strip 22 is a vertical surface, and the end surface of the rear side of the movable strip 22 is inclined from bottom to top towards the front side. When the main pressing head 121 moves forward in contact with the connecting plate 2, the main pressing head 121 sequentially contacts each movable strip 22 and abuts against the movable strip 22 to move downward, so that the movable strip 22 is retracted into the connecting groove. When the main pressing head 121 moves downward to extrude the movable strip 22, each elastic member 23 on the lower side of the connecting piece 21 is compressed to store energy. After the main pressing head 121 is separated from the movable strip 22, the connecting piece 21 is bounced upward under the elastic force of the elastic member 23, and each movable strip 22 is quickly extended from the connecting groove and strikes the metal waste, so as to promote the separation of impurities from the metal waste. When the main pressing head 121 moves to extrude the metal waste in contact with the connecting plate 2, the connecting piece 21 and each movable strip 22 are sequentially extruded and moved downward by each movable strip 22, so that the metal waste is repeatedly struck by each movable strip 22 during the compression process, thereby promoting the complete separation of impurities from the metal waste, further improving the separation effect of impurities from the metal waste, and reducing the influence of impurities on the packaging quality of the metal waste during the compression and packaging operation.

[0043] As shown in Figure 6 and Figure 7 , the rear side of the main pressing head 121 is further provided with a lower pressing block 122. When the main pressing head 121 moves backward, the lower pressing block 122 sequentially abuts against each movable strip 22 and extrudes the movable strip 22 to move downward. When the main pressing head 121 extrudes the movable strip 22 to move downward, the movable strip 22 can prevent the main pressing head 121 from returning. Specifically, the lower pressing block 122 is connected to the main pressing head 121 by a return member. The return member can be an elastic telescopic rod, or a combination of a connecting rod and a spring. The end surface of the rear side of the lower pressing block 122 moves forward from top to bottom. When the lower pressing block 122 moves to the rear side with the main pressing head 121, the inclined surface of the lower pressing block 122 first contacts the upper end of the rear surface of the movable strip 22. When the lower pressing block 122 continuously moves backward to extrude the return member and store energy, the rear end of the main pressing head 121 contacts the front end of the lower pressing block 122. The main pressing head 121 pushes the lower pressing block 122 to move synchronously. The main pressing head 121 extrudes the movable strip 22 to move downward into the connecting groove. The main pressing head 121 smoothly passes through the position of the movable strip 22, avoiding the influence of the movable strip 22 on the returning action of the main pressing head 121, and ensuring the continuous and stable operation of the packaging machine.

[0044] The reset block 25 is located at the rear side of each movable strip 22, and the reset block 25 is fixed with the connecting piece 21. A groove is formed on the connecting plate 2 for the reset block 25 to pass through. The reset block 25 is in sliding fit with the connecting plate 2 in the vertical direction. The height of the reset block 25 is greater than the height of each movable strip 22. The front end surface of the reset block 25 is inclined from top to bottom towards the front side. The rear end of the main pressing head 121 is in active abutment with the inclined surface of the reset block 25. When the main pressing head 121 slides in close contact with the reset block 25, the reset block 25 is pushed downward. When the reset block 25 is pressed to be flush with the upper surface of the connecting plate 2, each movable strip 22 is fully inserted into the connecting groove, and a gap is formed between the movable strip 22 and the connecting groove. That is, the upper space of the connecting plate 2 and the lower space of the connecting plate 2 are connected through the connecting groove. The impurities knocked off by the movable strip 22 fall into the lower space of the connecting plate 2 along the inclined side of the movable strip 22. The connecting piece 21 is provided in a mesh or frame structure, which can effectively prevent impurities from falling on the upper side of the connecting piece 21.

[0045] When the movable strip 22 strikes the metal waste, impurities fall on the connecting plate 2. In order to further ensure that the impurities fall smoothly from the gap between the movable strip 22 and the connecting groove, the rear side of the connecting groove is provided with a guide portion 221 with a height decreasing from rear to front. When the main pressing head 121 slides in close contact with the connecting plate 2, the falling impurities are pushed to the position where the guide portion 221 is located. When the main pressing head 121 is reset, the reset block 25 is pushed downward at the rear side of each movable strip 22. The depth of the movable strip 22 relative to the connecting groove increases, and a gap is formed between the inclined side of the movable strip 22 and the connecting groove. The impurities accumulated at the guide portion 221 slide along the inclined direction of the guide portion 221 into the connecting groove and further into the lower space of the connecting plate 2. The movable plate detachably connected between the bottom plate 15 and the connecting plate 2 can be provided between the bottom plate 15 and the connecting plate 2, so that the staff can regularly detach the movable plate and clean the impurities between the connecting plate 2 and the bottom plate 15.

[0046] The arrangement of each movable strip 22 can also promote the change of the contact position of the metal waste with the main pressing head 121 and the side plate of the frame body 1. When some building metal waste is compressed, the hardness angle of the steel bars in the building metal waste. If the end of the steel bar directly abuts against the main pressing head 121 when the main pressing head 121 presses the metal waste, a relatively large pressure will be generated on the main pressing head 121, which will cause serious local wear on the main pressing head 121 and accelerate the aging speed of the main pressing head 121. The interval between each movable strip 22 strikes the metal waste, which not only promotes the separation of impurities, but also changes the angle of the steel bars or other hard metal parts in the compression cavity during the striking process. The contact position of the metal waste with the main pressing head 121 is constantly changed, the pressure on the local part of the main pressing head 121 during compression is reduced, and the service life of the main pressing head 121 is prolonged.

[0047] When the lower pressing plate is rotated and buckled on the upper end of the compression cavity, a gap will inevitably be formed between the lower pressing plate and the front side plate of the compression cavity. When the metal scrap is being pressed, part of the metal scrap will be squeezed into the gap between the lower pressing plate and the front side plate, which will cause the last metal block to have burrs. The existence of the burrs will affect the stacking and transportation of the metal block. The frame 1 is also provided with a lower pressing mechanism for processing the burrs on the metal block.

[0048] As shown in Figures 3 to 5 , the lower pressing mechanism comprises an extrusion plate 3, a lower pressing rod 31 and a transmission assembly. The lower pressing rod 31 is vertically arranged, the extrusion plate 3 is connected with the upper end of the lower pressing rod 31, and the lower pressing rod 31 is elastically connected with the frame 1 in the vertical direction. The lower pressing rod 31 can be connected with the frame 1 through a spring or an elastic telescopic rod. When the lower pressing rod 31 moves downward, it extrudes the spring or the elastic telescopic rod connected therewith and stores the force. The transmission assembly pushes the extrusion plate 3 to move downward in the gap between the front side plate of the frame 1 and the main pressing head 121, and extrudes the metal scrap entering the gap between the front side plate of the frame 1 and the main pressing head 121.

[0049] The connecting piece 21 is fixed with a guide rod 24 which is parallel to the lower pressing rod 31. The transmission assembly comprises a mounting plate 33, a connecting seat 32, a connecting shaft 323, a gear one 321 and a gear two 322. The mounting plate 33 is fixed on the front side of the frame 1. The connecting seat 32 is elastically connected with the mounting plate 33 in the horizontal direction. The connecting shaft 323 is rotatably assembled on the connecting seat 32. The gear one 321 is unidirectionally rotatably connected with the connecting shaft 323. The gear two 322 is fixed with the connecting shaft 323 and unidirectionally rotatably connected with the connecting seat 32. Specifically, the gear one 321 is connected with the connecting shaft 323 through a one-way bearing, and the gear two 322 is connected with the connecting seat 32 through a one-way bearing. The guide rod 24 is provided with a tooth part one 241, and the lower pressing rod 31 is provided with a tooth part two 311. The gear one 321 is engaged with the tooth part one 241, and the gear two 322 is engaged with the tooth part two 311.

[0050] When the metal scrap is being extruded, the hydraulic cylinder 11 connected with the upper pressing plate 111 pushes the upper pressing plate 111 to rotate and buckle on the upper end of the compression cavity. Then the main pressing head 121 is driven by the main hydraulic cylinder 12 to move in the compression cavity and extrude the metal scrap in the compression cavity. The main pressing head 121 extrudes each movable strip 22 to move downward, and drives the connecting piece 21 to move downward intermittently. The guide rod 24 moves up and down synchronously with the connecting piece 21. When the guide rod 24 moves downward, the gear one 321 rotates under the engagement of the gear one 321 and the tooth part one 241, and drives the connecting shaft 323 to rotate synchronously. The gear two 322 rotates with the connecting shaft 323. When the gear two 322 rotates, it pushes the lower pressing rod 31 to move downward. When the lower pressing rod 31 moves downward, it pushes the extrusion plate 3 to extend into the gap between the upper pressing plate 111 and the frame 1 and extrude the metal scrap in the gap, preventing the burrs from being generated between the frame 1 and the upper pressing plate 111 when the metal scrap is compressed.

[0051] When the connecting piece 21 is reset and moves up under the action of the elastic piece 23, the gear one 321 rotates in the other direction under the meshing action of the gear one 321 and the tooth part one 241, and the connecting shaft 323 does not rotate with the gear one 321 under the action of the one-way bearing, so the position of the guide rod 24 and the extrusion plate 3 does not change, that is, in the process that the main pressing head 121 extrudes the metal waste, the extrusion plate 3 moves downward at intervals to extrude the metal waste at the gap between the extrusion frame 1 and the lower pressing plate.

[0052] In the initial state, the extrusion plate 3 is located on the upper side of the front side plate of the frame 1, in order to avoid the interference of the extrusion plate 3 on the action of the lower pressing plate buckling on the upper end of the compression cavity, the upper end of the inner side of the front side plate is inclined from top to bottom to the rear side, and the extrusion plate 3 moves downward when it is attached to the inclined section of the side plate. The extrusion plate 3 is elastically connected to the lower pressing rod 31 in the horizontal direction, and the extrusion plate 3 can be connected to the lower pressing rod 31 through a tension spring, so that when the extrusion plate 3 slides along the inner wall of the front side plate of the frame 1, the extrusion plate 3 moves away from the lower pressing rod 31 in the horizontal direction and stretches the tension spring to store energy. In order to further improve the strength of the extrusion plate 3 in extruding the metal waste and the stability of the downward movement, the lower pressing rod 31, the guide rod 24 and the transmission assembly are all provided with two groups, and the two lower pressing rods 31 are connected to the extrusion plate 3 at the same time.

[0053] In the process that the lower pressing rod 31 moves downward to continuously extrude the spring, in order to ensure that the extrusion plate 3 can be reset smoothly after the extrusion of the metal waste is completed, the upper end of the guide rod 24 is also provided with a reset part 242, the reset part 242 is provided with an inclined surface opposite to the gear one 321, and the inclined surface is inclined from top to bottom to the rear side. When the main pressing head 121 extrudes the reset block 25 to move downward, the guide rod 24 moves downward to the reset part 242 and abuts against the gear one 321, the entire connecting seat 32 moves to the direction close to the mounting plate 33 through the extrusion of the gear one 321, at the same time, the gear two 322 and the tooth part two 311 are separated, the lower pressing rod 31 is reset under the action of the elastic force of the spring, and the extrusion plate 3 moves upward to reset. After the extrusion plate 3 is reset, it is automatically attached to the upper end of the lower pressing rod 31 under the action of the tension spring.

[0054] The hydraulic packing machine for metal waste provided by the application effectively promotes the separation of impurities from the metal waste in the packing process, promotes the change of the angle of the metal in the compression cavity in the extrusion process, improves the compression effect of the metal waste, reduces the wear of the compression cavity side wall and the main pressing head in the compression process, and prolongs the service life of the packing machine.

[0055] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A hydraulic baler for metal scrap, comprising a frame, an upper pressure plate, and a compression mechanism disposed within the frame, wherein the frame comprises a horizontally arranged base plate and a plurality of vertically arranged side plates, and the compression mechanism comprises a main pressure assembly and a side pressure assembly, the main pressure assembly comprising a main hydraulic cylinder and a main pressure head, characterized in that, The frame also includes a cleaning mechanism, which comprises a connector, an elastic element, a reset block, and multiple movable strips. A connecting plate is fixed parallel to the upper side of the base plate. The main pressure head slides against the connecting plate. The connector is located between the connecting plate and the base plate and is connected to the base plate via the elastic element. The connecting plate has several connecting grooves corresponding to each movable strip. Each movable strip extends into the upper side of the connector through its respective connecting groove and is spaced apart along the moving direction of the main pressure head. The side facing the pressing direction of the main pressure head is the front side, the front end face of the movable strip is vertical, and the rear end face of the movable strip is inclined from bottom to top towards the front side. The reset block is located behind each movable strip, and the height of the reset block is greater than the height of the movable strip. The main pressure head abuts against the reset block. A lower pressing block is provided on the rear side of the lower end of the main pressure head. When the main pressure head retracts, the lower pressing block presses against the movable strip and moves downward.

2. The hydraulic baler for metal scrap according to claim 1, characterized in that, The lower pressure block is connected to the main pressure head through a reset component. The rear end face of the lower pressure block is inclined from top to bottom and forward. The inclined end of the lower pressure block is in contact with the movable strip.

3. The hydraulic baler for metal scrap according to claim 1, characterized in that, The rear side of the connecting groove slopes downward from back to front to form a guide section.

4. The hydraulic baler for metal scrap according to claim 1, characterized in that, The front end face of the reset block is inclined from bottom to top and then to the rear, and the rear end of the main pressure head is in movable contact with the front end face of the reset block.

5. The hydraulic baler for metal scrap according to claim 1, characterized in that, The frame is also provided with a pressing mechanism, which includes a pressing plate, a pressing rod and a transmission assembly. The pressing rod is arranged vertically, the pressing plate is connected to the upper end of the pressing rod, the pressing rod is elastically connected to the frame in the vertical direction, and the transmission assembly pushes the pressing plate to move down the gap between the front side plate of the frame and the main pressing head.

6. The hydraulic baler for metal scrap according to claim 5, characterized in that, A guide rod is fixed on the connector, and the guide rod is parallel to the pressing rod. The transmission assembly includes a mounting plate, a connecting seat, a connecting shaft, a first gear, and a second gear. The mounting plate is fixed to the front side of the frame. The connecting seat is elastically connected to the mounting plate in the horizontal direction. The connecting shaft is rotatably mounted on the connecting seat. The first gear is unidirectionally rotatably connected to the connecting shaft. The second gear is fixed to the connecting shaft and unidirectionally rotatably connected to the connecting seat. The guide rod has a first tooth, and the pressing rod has a second tooth. The first gear meshes with the first tooth, and the second gear meshes with the second tooth.

7. The hydraulic baler for metal scrap according to claim 6, characterized in that, The upper end of the guide rod is provided with a reset part, which is inclined from top to bottom and rearward. When the main pressure head squeezes the reset block to move completely downward, the reset part abuts against the gear and pushes the gear to move forward.

8. The hydraulic baler for metal scrap according to claim 6, characterized in that, The upper end of the inner side of the front side plate is inclined from top to bottom and rear. When the extrusion plate moves down, the inclined section that is in contact with the side plate moves down. The extrusion plate is elastically connected to the pressure rod in the horizontal direction.

9. The hydraulic baler for metal scrap according to claim 1, characterized in that, The side pressure assembly includes a side pressure head and a side hydraulic cylinder. The extended end of the side hydraulic cylinder is fixed to the side pressure head, and each of the movable bars avoids the movement space of the side pressure head.

10. The hydraulic baler for metal scrap according to claim 1, characterized in that, The frame is also provided with a discharge mechanism, which includes a drive structure and a discharge push plate. The drive structure drives the discharge push plate to rotate.

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