Cutting chip extrusion cake equipment and its hydraulic system

Abstract

This utility model discloses a chip extrusion patty device and its hydraulic system, belonging to the field of chip processing technology. It includes a machine body and internal feeding unit, extrusion unit, power unit, and gate unit. The feeding unit has a first feeding hopper with a pushing mechanism, and a second feeding hopper with a spiral feeding rod extending to the feeding channel of the extrusion unit. A pressing arch plate is positioned above the spiral feeding rod outside the inlet of the feeding channel, with its edge aligned with the edge of the pushing plate of the pushing mechanism. The gate unit is located at the outlet of the extrusion unit. The hydraulic system is controlled via a control panel to drive the extrusion patty device. Chips enter the feeding channel under the coordinated action of the pushing plate, pressing arch plate, and spiral feeding rod, ensuring all chips are pushed into the feeding channel, preventing chip backflow, increasing effective feed volume, and thus improving work efficiency. The hydraulic drive allows for a more compact overall structure, smaller size, and lighter weight, further reducing energy consumption and noise.

Description

Technical Field

[0001] This utility model belongs to the field of cutting chip processing technology, and specifically relates to a cutting chip extrusion cake device and its hydraulic system. Background Technology

[0002] During the machining process of equipment such as lathes, drilling machines, milling machines, and gear hobbing machines, a large amount of cutting chips are generated. Due to the large quantity of these chips, they occupy a significant amount of space, making them inconvenient to stack and transport. Furthermore, the internal cutting oil or fluid leaks everywhere, causing environmental pollution. Currently, a novel cutting chip pressing machine with Chinese patent publication number CN223113792U has been applied in workshops, but the following problems have been found during its application:

[0003] During the feeding process, some of the cutting chips will turn upwards from the junction of the end of the spiral feed rod and the feed hopper, and cannot all enter the mold cavity used for pressing the cake mold smoothly. The cutting chips that are stuck in the local area need to be repeated many times before they can enter the pressing mold cavity, which seriously affects the work efficiency and is also not conducive to energy saving of the equipment.

[0004] Therefore, existing equipment needs to be improved to increase effective feeding, thereby improving work efficiency and reducing equipment energy consumption. Utility Model Content

[0005] To address the above problems, this utility model provides a chip extrusion cake device and its hydraulic system.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A chip extrusion briquetting device includes a machine body and a feeding unit, an extrusion unit, a power unit, and a gate unit disposed within the machine body. The feeding unit includes a first feeding hopper and a second feeding hopper with internal cavity communication. A pushing mechanism is provided at the upper part of the first feeding hopper. One end of a spiral feeding rod in the second feeding hopper is connected to the power unit, and the other end extends to the feeding channel of the extrusion unit. An arched pressing arch is provided on the outer side of the inlet of the feeding channel. The pressing arch is disposed above the spiral feeding rod, and the edge of the pressing arch can be aligned with the edge of the pushing plate of the pushing mechanism. The gate unit is disposed at the outlet end of the extrusion unit and is used to block the chips during the extrusion process. The pushing mechanism, the power unit, the extrusion unit, the gate unit, and the control panel on the top of the machine body are all connected to a controller.

[0008] Furthermore, the pushing mechanism includes a pushing hydraulic cylinder and a pushing plate. The cylinder body of the pushing hydraulic cylinder is inclinedly disposed on the inclined side wall of the first feed hopper. The piston rod of the pushing hydraulic cylinder is provided with a guide post connected to the pushing plate at its end. The guide post is connected to the inclined side wall through a guide plate. The middle part of the guide plate is provided with a guide hole that slides with the guide post. The pushing plate is L-shaped. One side plate of the pushing plate is perpendicular to the inclined side wall and is threadedly engaged with the lower end of the guide post. The other side plate of the pushing plate is parallel to the inclined side wall. The junction of the two side plates of the pushing plate is rounded.

[0009] Furthermore, both ends of the push plate are equipped with rollers for rolling along the inclined side wall of the first feed hopper during the movement of the push plate; the outer side of the cylinder body of the push hydraulic cylinder is equipped with a guard plate, the upper end of which is fixed to the upper edge of the first feed hopper and flush with the top surface of the machine body.

[0010] Furthermore, the spiral feed rod includes a spiral shaft and spiral blades on its outer wall, with a gap between the end of the spiral blades and the outer circle of the end of the spiral shaft, and a guide cone surface at the end of the spiral shaft.

[0011] Furthermore, the driving end of the spiral feed rod is connected to the driving mechanism, which is driven by a hydraulic motor. The outer edge of the spiral blade of the spiral feed rod matches the inner wall of the feed channel. The end of the spiral feed rod is located inside the outlet of the feed channel, and the outlet of the feed channel is connected to the mold cavity of the extrusion unit.

[0012] Furthermore, the upper parts of both the first and second feed hoppers are truncated pyramids, wider at the top and narrower at the bottom, and the bottom of the second feed hopper is a semi-cylindrical cavity for accommodating the spiral feed rod. One side of the first and second feed hoppers is an inwardly inclined sidewall. The upper parts of the other three sidewalls of the first feed hopper are vertically arranged, and the lower parts are inclined inward. The upper part of the second feed hopper is connected to the lower end of the first feed hopper, and the inclination of the upper and lower sidewalls is consistent. The lower parts of the other three sidewalls of the second feed hopper are inclined inward for connecting with the semi-cylindrical cavity. An installation plate is provided on the inner wall of the discharge end of the semi-cylindrical cavity. The middle part of the installation plate is provided with a through hole that communicates with the feed channel. The pressing arch plate is located on the top of the installation plate, above the through hole.

[0013] Furthermore, an arc-shaped upper arch is provided above the through hole of the mounting plate, and the pressure arch plate has the same curvature as the upper arch and is fitted to the top of the upper arch.

[0014] Furthermore, the extrusion unit includes an extrusion hydraulic cylinder, a pusher rod, and a pressing die. The pusher rod is connected to the end of the piston rod of the extrusion hydraulic cylinder, and the pusher rod slides in fit with the cavity of the pressing die. The side of the pressing die is provided with a feeding channel that communicates with the cavity. Both the pusher rod and the feeding channel are cylindrical. The feeding channel and the central axis of the pusher rod are perpendicular to each other. The pusher rod is used to cut filamentous cutting chips. The inner wall of the cavity is provided with an inner sleeve, and the Rockwell hardness of the inner sleeve after heat treatment is HRC60.

[0015] This utility model also provides a hydraulic system for extruding cutting chips, including the above-mentioned cutting chip extrusion equipment, as well as an oil tank, an oil pump, a pushing hydraulic cylinder of a pushing mechanism, an extrusion hydraulic cylinder of an extrusion unit, a gate hydraulic cylinder of a gate unit, and a hydraulic motor for driving a spiral feed rod, all located inside the machine body. The oil pump is driven by a motor, and the oil inlet of the oil pump is connected to the oil tank. The downstream outlet of the oil pump is connected to the extrusion hydraulic cylinder through a first electromagnetic reversing valve, to the gate hydraulic cylinder through a second electromagnetic reversing valve, to the pressure relief port through a third electromagnetic reversing valve, to the pushing hydraulic cylinder through a fourth electromagnetic reversing valve, and to the hydraulic motor through a fifth electromagnetic reversing valve. The return oil lines of the first, second, third, fourth, and fifth electromagnetic reversing valves are all connected to the oil tank.

[0016] The extrusion hydraulic cylinder is used to drive the pusher rod to press the cutting chips into cakes. The pusher hydraulic cylinder is used to drive the pusher plate downward to push the cutting chips into the second feed hopper. The gate hydraulic cylinder is used to drive the gate to rise and fall to facilitate the discharge of the slag cake. The hydraulic motor drives the spiral feed rod to rotate through the drive mechanism.

[0017] Furthermore, the return oil lines of the first, third, fourth, and fifth electromagnetic directional valves are all connected in parallel with the return oil main pipe, which is connected to the oil tank; the inlet oil lines of the first, second, third, fourth, and fifth electromagnetic directional valves are all connected in parallel with the inlet oil main pipe.

[0018] The second and fourth electromagnetic directional valves are equipped with stacked pressure reducing valves between their inlet and return oil lines, and the main inlet oil line and the main return oil line are equipped with stacked pressure reducing valves; the third electromagnetic directional valve is equipped with a plug-in pressure regulating valve between its inlet and return oil lines.

[0019] Furthermore, the oil pump has a filter at its inlet, a check valve at its outlet, a pressure gauge at its inlet, and a pressure sensor between its outlet and the main inlet pipe. The oil tank has a filler port and a level thermometer, which includes a level sensor and a temperature sensor. Two air coolers are installed on the return oil line of the second electromagnetic reversing valve.

[0020] The technological advancements achieved by this invention compared to existing technologies are as follows:

[0021] This invention features an arched pressing plate on the outside of the feed channel inlet, positioned above the spiral feed rod, with its edge aligned with the edge of the push plate of the pushing mechanism. The hydraulic system, controlled by a control panel, drives the pressing device. Cutting chips enter the feed channel through the combined action of the push plate, pressing plate, and spiral feed rod. The pressing plate pushes all the chips into the feed channel, preventing them from flipping upwards, thus improving effective feeding and increasing work efficiency. The hydraulic drive also allows for a more compact overall structure, smaller size, and lighter weight, further reducing energy consumption and noise. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 An external view of a chip extrusion patter device provided for an embodiment of this utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the first and second feed hoppers;

[0026] Figure 3 This is a schematic diagram showing the cooperation between the material pushing mechanism and the screw feed rod in the second feeding hopper in this embodiment of the present invention;

[0027] Figure 4 for Figure 3 Schematic diagram of the pusher mechanism;

[0028] Figure 5 This is a schematic diagram showing the cooperation between the spiral feed rod and the feed channel in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the spiral feed rod in this utility model;

[0030] Figure 7This is a cross-sectional structural diagram of the screw feed rod and the feed channel in this utility model, and the push rod and the pressing mold in this utility model.

[0031] Figure 8 A schematic diagram of the hydraulic circuit of a cutting chip extrusion cake hydraulic system provided by this utility model;

[0032] In the picture:

[0033] 1-Machine body; 2-First feed hopper; 3-Second feed hopper; 4-Spiral feed rod; 40-Spiral shaft; 41-Spiral blade; 42-Guide cone surface; 5-Feeding channel; 6-Pressure arch plate; 7-Push plate; 8-Control panel; 9-Push hydraulic cylinder; 10-Guide column; 11-Guide plate; 12-Roller; 13-Guard plate; 14-Hydraulic motor; 15-Upper arch; 16-Extrusion hydraulic cylinder; 17-Push rod; 18-Pressure mold; 19-Inner sleeve; 20-Inclined inner wall;

[0034] 21-Oil tank; 22-Oil pump; 23-Gate hydraulic cylinder; 24-Motor; 25-First solenoid directional valve; 26-Second solenoid directional valve; 27-Third solenoid directional valve; 28-Fourth solenoid directional valve; 29-Fifth solenoid directional valve; 30-Return oil main pipe; 31-Inlet oil main pipe; 32-Stacked pressure reducing valve; 33-Plank pressure regulating valve; 34-Filter; 35-Check valve; 36-Pressure gauge; 37-Pressure sensor; 38-Oil inlet; 39-Level sensor; 43-Temperature sensor; 44-Air cooler; 45-Switch; 46-Mounting plate. Detailed Implementation

[0035] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0036] like Figure 1 , Figure 2 and Figure 3As shown in the figure, a cutting chip extrusion cake device provided by this utility model includes a machine body 1 and a feeding unit, an extrusion unit, a power unit, and a gate unit disposed within the machine body 1. The feeding unit includes a first feeding hopper 2 and a second feeding hopper 3 with internal cavity communication. A pushing mechanism is provided on the upper part of the first feeding hopper 2. One end of the spiral feeding rod 4 in the second feeding hopper 3 is connected to the power unit, and the other end extends to the feeding channel 5 of the extrusion unit. An arched pressing arch plate 6 is provided on the outer side of the inlet of the feeding channel 5. The pressing arch plate 6 is disposed above the spiral feeding rod 4, and the edge of the pressing arch plate 6 can be aligned with the edge of the pushing plate 7 of the pushing mechanism. The gate unit is disposed at the outlet end of the extrusion unit and is used to block the cutting chips during the extrusion process. The pushing mechanism, the power unit, the extrusion unit, the gate unit, and the control panel 8 on the top of the machine body 1 are all connected to the controller. The equipment is automatically controlled via the control panel. The pushing mechanism pushes the cutting chips into the second feed hopper. With the coordinated action of the push plate, the pressure arch plate and the spiral feed rod, all the cutting chips can be pushed into the feed channel, avoiding the phenomenon of cutting chips turning up and improving the effective feed rate.

[0037] As a preferred structure, such as Figure 3 , 4 As shown, the pushing mechanism includes a pushing hydraulic cylinder 9 and a pusher plate 7. The cylinder body of the pushing hydraulic cylinder 9 is inclinedly mounted on the inclined side wall 20 of the first feed hopper 2. The piston rod of the pushing hydraulic cylinder 9 has a guide post 10 connected to the pusher plate 7 at its end. The guide post 10 is connected to the inclined side wall 20 through a guide plate 11, and the middle of the guide plate 11 has a guide hole that slides with the guide post 10. The pusher plate 7 is L-shaped. One side plate of the pusher plate 7 is perpendicular to the inclined side wall 20 and is threaded to the lower end of the guide post 10. The other side plate of the pusher plate 7 is parallel to the inclined side wall 20, and the junction of the two side plates of the pusher plate 7 is rounded. By adjusting the position of the pusher plate on the guide post, the downward pressure position of the cutting chips can be adjusted. At the same time, the cooperation between the guide post and the guide plate can improve the stability of the pusher plate during the pushing process. By optimizing the pusher plate structure, it is convenient to cooperate with the spiral feed rod to smoothly push the cutting chips into the feed channel.

[0038] Further optimize the above structure, such as Figure 1 , 4As shown, both ends of the push plate 7 are equipped with rollers 12 for rolling along the inclined side wall 20 of the first feed hopper 2 during the movement of the push plate 7; the outer side of the cylinder body of the pushing hydraulic cylinder 9 is equipped with a guard plate 13, the upper end of which is fixed to the upper edge of the first feed hopper 2 and flush with the top surface of the machine body 1. The use of rollers can reduce the resistance of the push plate during the lifting process and reduce energy consumption. The use of guard plates can protect the pushing hydraulic cylinder, and at the same time, the guard plate and the pushing mechanism are located below the top surface of the machine body, which can make the cutting chips feed inside the machine body, facilitate the cleaning of the machine body surface, and make the overall equipment exterior cleaner.

[0039] In specific embodiments of this utility model, such as Figure 5 , 6 As shown, the spiral feed rod 4 includes a spiral shaft 40 and spiral blades 41 on its outer wall. The end of the spiral blade 41 protrudes from the outer circle of the end of the spiral shaft 40, and the protrusion spacing is 3mm. With this structure, the end of the spiral blade can act like a fishhook, so that the ribbon-like cutting chips can be smoothly fed into the feed channel and the mold cavity when the spiral shaft rotates in the forward direction. At the same time, a guide cone surface 42 is provided at the end of the spiral shaft 40, which can reduce the resistance of the spiral shaft during the feeding process.

[0040] During assembly, the driving end of the spiral feed rod 4 is connected to the driving mechanism, which is driven by the hydraulic motor 14. The outer edge of the spiral blade 41 of the spiral feed rod 4 matches the inner wall of the feeding channel 5. The end of the spiral feed rod 4 is located inside the outlet of the feeding channel 5, and the outlet of the feeding channel 5 is connected to the mold cavity of the extrusion unit. The above-mentioned driving mechanism and hydraulic motor have been described in detail in patent CN223113792U, a novel chip pressing machine, and will not be repeated here.

[0041] In specific design, such as Figure 2As shown, the upper parts of the first feed hopper 2 and the second feed hopper 3 are both truncated pyramids with a larger upper part and a smaller lower part. The bottom of the second feed hopper 3 is a semi-cylindrical cavity used to accommodate the spiral feed rod 4. One side of the first feed hopper 2 and the second feed hopper 3 is an inwardly inclined sidewall 20. The upper parts of the other three sidewalls of the first feed hopper 2 are vertically arranged and the lower parts are inclined inward. The upper part of the second feed hopper 3 is connected to the lower end of the first feed hopper 2, and the inclination of the upper and lower sidewalls is the same. The lower parts of the other three sidewalls of the second feed hopper 3 are inclined inward and used to connect with the semi-cylindrical cavity. The inner wall of the discharge end of the semi-cylindrical cavity is provided with a mounting plate 46. The middle part of the mounting plate 46 is provided with a through hole that communicates with the feed channel 5. The pressing arch plate 6 is provided on the top of the mounting plate 46 and above the through hole. The mounting plate 46 has an arc-shaped upper arch 15 above its through hole. The pressure arch 6 has the same curvature as the upper arch 15 and is fitted to the top of the upper arch 15. This feed hopper structure ensures that the cutting chips smoothly enter the semi-cylindrical cavity. Furthermore, the double-layer structure formed by the mounting plate, pressure arch, and upper arch enhances the structural strength to resist the reverse thrust during the upward movement of the cutting chips.

[0042] In specific embodiments of this utility model, such as Figure 7 As shown, the extrusion unit includes an extrusion hydraulic cylinder 16, a pusher rod 17, and a pressing mold 18. The pusher rod 17 is connected to the end of the piston rod of the extrusion hydraulic cylinder 16, and the pusher rod 17 slides tightly into the mold cavity of the pressing mold 18. The pressing mold 18 has a feeding channel 5 that communicates with the mold cavity on its side. Both the pusher rod 17 and the feeding channel 5 are cylindrical, and the central axis of the feeding channel 5 is perpendicular to that of the pusher rod 17. The pusher rod 17 is used to cut filamentous cutting chips. The inner wall of the mold cavity is provided with an inner sleeve 19. The Rockwell hardness of the inner sleeve 19 after heat treatment is HRC60. Similarly, the pusher rod is also heat-treated to enhance its hardness. The interconnection relationship of the components of the extrusion unit and the specific structure of the pressing mold have been described in detail in the new type of cutting chip pressing machine in patent CN223113792U, and will not be repeated here. At the same time, the extrusion hydraulic cylinder adopts the hydraulic cylinder with explosion-proof buffer function in patent CN113833715B. The extrusion hydraulic cylinder drives the push rod to move forward along the mold cavity of the pressing mold. The end of the push rod can cut the filamentous cutting chips at the junction of the feeding channel and the inner sleeve feeding port, so that the slag cakes after the cutting chips are pressed can be independent and avoid the phenomenon of filamentous cutting chips connecting the slag cakes.

[0043] Meanwhile, a gate unit is provided at the outlet of the die cavity of the pressing mold. The gate unit includes a material blocking mechanism, a support frame for the die cavity outlet, and a drain plate. During the pressing process where the extrusion hydraulic cylinder pushes the push rod, the extruded cutting oil or cutting fluid will leak into the recovery tank below through the drain plate. During the extrusion of cutting chips in the pressing mold, the material blocking gate of the material blocking mechanism is in a closed state. After the slag cake is formed in the pressing mold, the gate hydraulic cylinder is activated to lift the material blocking gate, and at the same time, the extrusion hydraulic cylinder further advances to push out the slag cake. This part of the structure is also described in detail in the new cutting chip pressing machine patent CN223113792U, and will not be repeated here.

[0044] In addition, a circulation pump and a liquid level sensor are installed in the recycling tank at the bottom of the machine body. When the liquid level sensor detects the level of cutting oil or cutting fluid, the circulation pump starts automatically and draws the cutting oil or cutting fluid into the delivery pipeline and delivers it to the cold working machine tool, realizing the recycling of cutting oil or cutting fluid in cold working.

[0045] The aforementioned chip extrusion cake equipment can handle the cutting chips generated during cold working. The cutting chips are directly fed into the chip extrusion cake equipment through the interface of the machine tool chip conveyor. It can be used in conjunction with machine tools, drilling machines, milling machines, or sawing machines to achieve resource recycling and reuse.

[0046] This utility model also provides a hydraulic system for extruding cutting chips into a cake, such as... Figure 8 As shown, the device includes the aforementioned chip extrusion cake equipment, as well as an oil tank 21, an oil pump 22, a pushing hydraulic cylinder 9 of the pushing mechanism, a pressing hydraulic cylinder 16 of the extrusion unit, a gate hydraulic cylinder 23 of the gate unit, and a hydraulic motor 14 for driving the screw feed rod 4. The oil pump 22 is driven by a motor 24. The oil inlet of the oil pump 22 is connected to the oil tank 21. The downstream outlet of the oil pump 22 is connected to the pressing hydraulic cylinder 16 through a first electromagnetic reversing valve 25, to the gate hydraulic cylinder 23 through a second electromagnetic reversing valve 26, to the pressure relief port through a third electromagnetic reversing valve 27, to the pushing hydraulic cylinder 9 through a fourth electromagnetic reversing valve 28, and to the hydraulic motor 14 through a fifth electromagnetic reversing valve 29. The return oil lines of the first electromagnetic reversing valve 25, the second electromagnetic reversing valve 26, the third electromagnetic reversing valve 27, the fourth electromagnetic reversing valve 28, and the fifth electromagnetic reversing valve 29 are all connected to the oil tank 21. Meanwhile, the oil pump 22, the pusher hydraulic cylinder 9, the extrusion hydraulic cylinder 16, the gate hydraulic cylinder 23, the hydraulic motor 14, the first electromagnetic directional valve 25, the second electromagnetic directional valve 26, the third electromagnetic directional valve 27, the fourth electromagnetic directional valve 28, and the fifth electromagnetic directional valve 29 are all connected to the controller and can be automatically controlled by the hydraulic system.

[0047] In the specific design, limit switches are installed at both ends of the stroke of the extrusion hydraulic cylinder and the gate hydraulic cylinder to protect them. The motor 24 is a three-phase asynchronous motor. The first electromagnetic reversing valve 24 is model DSG-02-3C12 / DC24, which can control the extrusion hydraulic cylinder 16 to drive the push rod 17 to press the cutting chips into cakes. The second electromagnetic reversing valve 26 and the fourth electromagnetic reversing valve 28 are both model DSG-02-3C2 / DC24. The second electromagnetic reversing valve 26 can control the gate hydraulic cylinder 23 to drive the gate to rise and fall for easy discharge of the slag cake. The fourth electromagnetic reversing valve 28 can control the pusher hydraulic cylinder 9 to drive the push plate 7 downward to push the cutting chips into the second feed hopper 3. The third electromagnetic reversing valve 27 is model DSG-02-2B3B / DC24, which can facilitate the control of the oil circuit pressure. The fifth electromagnetic reversing valve 29 is model DSG-02-3C4 / DC24, which can control the hydraulic motor 14 to drive the spiral feed rod 4 to rotate through the drive mechanism to realize the feeding of the cake pressing mold cavity.

[0048] As a preferred structure, such as Figure 8 As shown, the return oil lines of the first electromagnetic directional valve 25, the third electromagnetic directional valve 27, the fourth electromagnetic directional valve 28, and the fifth electromagnetic directional valve 29 are all connected in parallel to the return oil main pipe 30, which is connected to the oil tank 21. The inlet oil lines of the first electromagnetic directional valve 25, the second electromagnetic directional valve 26, the third electromagnetic directional valve 27, the fourth electromagnetic directional valve 28, and the fifth electromagnetic directional valve 29 are all connected in parallel to the inlet oil main pipe 31. This structure makes the oil circuit more compact. A stacked pressure reducing valve 32 is provided between the inlet oil line and the return oil line of the second electromagnetic directional valve 26 and the fourth electromagnetic directional valve 28, and a stacked pressure reducing valve 32 is provided between the inlet oil main pipe 31 and the return oil main pipe 30. A plug-in pressure regulating valve 33 is provided between the inlet oil line and the return oil line of the third electromagnetic directional valve 27. The pressure of the hydraulic oil is controlled by the stacked pressure reducing valve and the plug-in pressure regulating valve to ensure the safe operation of the system.

[0049] In a specific embodiment of this utility model, the oil pump 22 has a filter 34 at its inlet and a check valve 35 at its outlet. A pressure gauge 36 is installed at the inlet of the check valve 35. A pressure sensor 37 is installed between the outlet of the check valve 35 and the main inlet pipe 31. The oil tank 21 has an oil filler 38 and a liquid level thermometer, which includes a liquid level sensor 39 and a temperature sensor 43. Two air coolers 44 are installed on the return oil line of the second electromagnetic reversing valve 26. The filter 34 is a mesh-type suction filter. Each of the stacked pressure reducing valves 32 is equipped with a pressure gauge 36. A switch 45 is installed on the pipeline connecting the pressure gauge 36 and the inlet of the check valve 35 to facilitate control of the hydraulic pressure, enabling the gate hydraulic cylinder to resist the extrusion force required for pressing the cake and allowing the pusher hydraulic cylinder to provide sufficient thrust to push the cutting chips into the spiral feed rod.

[0050] The aforementioned hydraulic system for extruding cutting chips into cakes can be integrated into the bottom of the machine body, which has the advantages of compact structure and light weight. It can realize the operation of feeding cutting chips, extruding them into cakes, and discharging the cakes. Compared with mechanical drive, it not only simplifies the structure but also reduces equipment energy consumption and noise.

[0051] In summary, this utility model has a compact structure and high working efficiency. It can be connected with the chip conveyor around the machine tool, allowing the cutting chips to directly enter the first feed hopper for automatic feeding. Then, the cutting chip waste is fed into the inner sleeve of the pressing mold by the spiral feed rod, and after being extruded and shaped by the push rod in the forming inner sleeve, a high-density slag cake is obtained. This achieves the purpose of recycling waste metal chips and slag from machine tools, which is more environmentally friendly. The compressed cutting chips can reduce the space occupied, facilitate transportation, and reduce the transportation cost of urban renewable resources.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A chip extrusion cake device, characterized in that: The device includes a main body and a feeding unit, an extrusion unit, a power unit, and a gate unit disposed within the main body. The feeding unit includes a first feeding hopper and a second feeding hopper with internal cavities connected. A pushing mechanism is provided at the upper part of the first feeding hopper. One end of a spiral feeding rod in the second feeding hopper is connected to the power unit, and the other end extends to the feeding channel of the extrusion unit. An arched pressing arch is provided on the outer side of the inlet of the feeding channel. The pressing arch is disposed above the spiral feeding rod, and the edge of the pressing arch can be aligned with the edge of the pushing plate of the pushing mechanism. The gate unit is disposed at the outlet end of the extrusion unit and is used to block cutting chips during the extrusion process. The pushing mechanism, power unit, extrusion unit, gate unit, and control panel are all connected to a controller.

2. The chip extrusion cake device according to claim 1, characterized in that: The pushing mechanism includes a pushing hydraulic cylinder and a pushing plate. The cylinder body of the pushing hydraulic cylinder is inclinedly disposed on the inclined side wall of the first feed hopper. The piston rod of the pushing hydraulic cylinder is provided with a guide post connected to the pushing plate at its end. The guide post is connected to the inclined side wall through a guide plate. The middle part of the guide plate is provided with a guide hole that slides with the guide post. The pushing plate is L-shaped. One side plate of the pushing plate is perpendicular to the inclined side wall and is threadedly engaged with the lower end of the guide post. The other side plate of the pushing plate is parallel to the inclined side wall. The junction of the two side plates of the pushing plate is rounded.

3. The chip extrusion cake device according to claim 2, characterized in that: Both ends of the push plate are equipped with rollers for rolling along the inclined side wall of the first feed hopper during the movement of the push plate; the outer side of the cylinder body of the push hydraulic cylinder is equipped with a guard plate, the upper end of which is fixed to the upper edge of the first feed hopper and flush with the top surface of the machine body.

4. The chip extrusion cake device according to claim 1, characterized in that: The spiral feed rod includes a spiral shaft and spiral blades on its outer wall. There is a gap between the end of the spiral blade and the outer circle of the end of the spiral shaft. The end of the spiral shaft is provided with a guide cone surface.

5. The chip extrusion cake device according to claim 4, characterized in that: The driving end of the spiral feed rod is connected to the driving mechanism, which is driven by a hydraulic motor. The outer edge of the spiral blade of the spiral feed rod matches the inner wall of the feed channel. The end of the spiral feed rod is located inside the outlet of the feed channel. The outlet of the feed channel is connected to the mold cavity of the extrusion unit.

6. The chip extrusion cake device according to claim 1, characterized in that: The upper parts of both the first and second feed hoppers are truncated pyramids, wider at the top and narrower at the bottom. The bottom of the second feed hopper is a semi-cylindrical cavity for accommodating the spiral feed rod. One side of the first and second feed hoppers is an inwardly sloping sidewall. The upper parts of the other three sidewalls of the first feed hopper are vertically arranged, and the lower parts are inclined inward. The upper part of the second feed hopper is connected to the lower end of the first feed hopper, and the inclination of the upper and lower sidewalls is consistent. The lower parts of the other three sidewalls of the second feed hopper are inclined inward to connect with the semi-cylindrical cavity. An installation plate is provided on the inner wall of the discharge end of the semi-cylindrical cavity. The middle part of the installation plate has a through hole that communicates with the feed channel. The pressing arch plate is located on the top of the installation plate, above the through hole.

7. The chip extrusion cake device according to claim 1, characterized in that: The extrusion unit includes an extrusion hydraulic cylinder, a push rod, and a pressing die. The push rod is connected to the end of the piston rod of the extrusion hydraulic cylinder, and the push rod slides into the cavity of the pressing die. The side of the pressing die has a feeding channel that communicates with the cavity. Both the push rod and the feeding channel are cylindrical. The feeding channel and the central axis of the push rod are perpendicular to each other. The push rod is used to cut filamentous cutting chips. The inner wall of the cavity is provided with an inner sleeve, and the Rockwell hardness of the inner sleeve after heat treatment is HRC60.

8. A hydraulic system for extruding cutting chips, characterized in that: The device includes a chip extrusion cake extrusion apparatus as described in any one of claims 1-7, and an oil tank, an oil pump, a pushing hydraulic cylinder of a pushing mechanism, a pressing hydraulic cylinder of a pressing unit, a gate hydraulic cylinder of a gate unit, and a hydraulic motor for driving a spiral feed rod. The oil pump is driven by a motor, the oil inlet of the oil pump is connected to the oil tank, and the downstream of the oil pump outlet is connected to the pressing hydraulic cylinder via a first electromagnetic reversing valve, to the gate hydraulic cylinder via a second electromagnetic reversing valve, to the pressure relief port via a third electromagnetic reversing valve, to the pushing hydraulic cylinder via a fourth electromagnetic reversing valve, and to the hydraulic motor via a fifth electromagnetic reversing valve. The return oil lines of the first, second, third, fourth, and fifth electromagnetic reversing valves are all connected to the oil tank.

9. A hydraulic system for extruding cutting chips according to claim 8, characterized in that: The return oil lines of the first, third, fourth and fifth electromagnetic directional valves are all connected in parallel with the return oil main pipe, which is connected to the oil tank; the inlet oil lines of the first, second, third, fourth and fifth electromagnetic directional valves are all connected in parallel with the inlet oil main pipe. The second and fourth electromagnetic directional valves are equipped with stacked pressure reducing valves between their inlet and return oil lines, and the main inlet oil line and the main return oil line are equipped with stacked pressure reducing valves; the third electromagnetic directional valve is equipped with a plug-in pressure regulating valve between its inlet and return oil lines.

10. A hydraulic system for extruding cutting chips according to claim 9, characterized in that: The oil pump has a filter at its inlet and a check valve at its outlet. The check valve has a pressure gauge at its inlet and a pressure sensor between its outlet and the main inlet pipe. The oil tank has a filler port and a level thermometer, which includes a level sensor and a temperature sensor. The return oil line of the second electromagnetic reversing valve has two air coolers.

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