A forging device for a forging

Abstract

The application provides a forging device for forgings, comprising a rack, a forming die, a forging head and a cleaning mechanism. The cleaning mechanism comprises a cooling channel, a sealing cover and a gas path unit; the forming die defines a die cavity; the cooling channel is arranged at the periphery of the die cavity; the sealing cover is movable between multiple positions; the multiple positions comprise a first position sealing a loading and unloading opening; and the gas path unit is configured to selectively spray a cleaning gas to the inner wall of the die cavity or establish a negative pressure environment in the die cavity when the sealing cover is in the first position. Through the arrangement of the cooling channel, the sealing cover and the gas path unit, the magnesium scraps in the die cavity can be efficiently and safely cleaned by a three-step cooperative cleaning process of "low-temperature embrittlement-gas blowing-negative pressure separation". The whole cleaning process does not require manual intervention and is safe and controllable, avoids the safety hazards brought by traditional manual cleaning, reduces the labor intensity and improves the cleaning efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forging presses, in particular to a forging device for forgings. BACKGROUND

[0002] The content of this section only provides background information related to the present application, which may not constitute prior art.

[0003] Magnesium alloy forgings, as a kind of metal forging products with the characteristics of lightweight, high strength, etc., are widely used in electronic equipment, aerospace and other fields.

[0004] In related technologies, for cylindrical magnesium alloy forgings such as automobile steering columns, a die forging forging method is usually used for processing. Since magnesium alloy is a kind of metal material with low hardness, magnesium alloy scraps (referred to as "magnesium scraps" for short) are easily produced in the process of high-pressure forging and adhere to the inner wall of the die cavity. Therefore, after the magnesium alloy forging is taken out of the die cavity after forging, the magnesium scraps remaining in the die cavity need to be cleaned.

[0005] The common way to clean the magnesium scraps at present is to manually hold a scraper to scrape and clean the magnesium scraps adhering to the inner wall of the die cavity. It has been proved in practice that this cleaning method not only has high labor intensity, but also has high risk because the magnesium scraps are flammable and the high temperature during the friction contact between the scraper and the inner wall of the die cavity may cause the magnesium scraps to burn. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a forging device for forgings to at least overcome the above technical problems caused by manually holding a scraper to clean the magnesium scraps in the die cavity.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] The present application provides a forging device for forgings, comprising:

[0009] a rack;

[0010] a forming die fixedly arranged on the rack; the forming die defines a die cavity with a taking and placing opening at the top;

[0011] a forging head vertically movable and arranged directly above the taking and placing opening; and

[0012] a cleaning mechanism, the cleaning mechanism comprising:

[0013] a cooling channel arranged at the periphery of the die cavity; the cooling channel is used for selectively flowing cooling liquid to cool the die cavity;

[0014] a sealing cover, movable between a plurality of positions under the drive of a first driving device; the plurality of positions including a first position in which the take-off port is sealed, and a second position in which the sealing cover is located beside the forming die;

[0015] a gas path unit configured to selectively spray a cleaning gas to an inner wall of the mold cavity or establish a negative pressure environment in the mold cavity when the sealing cover is in the first position.

[0016] Optionally, the sealing cover is provided with a flexible sealing ring surrounding the take-off port; when the sealing cover is in the first position, the flexible sealing ring presses the forming die around the periphery of the take-off port;

[0017] The plurality of positions further includes a third position between the first position and the second position; when the sealing cover is in the third position, the flexible sealing ring is parallel to the plane in which the take-off port is located;

[0018] Furthermore, the movement of the sealing cover between the first position and the third position is linear movement along the vertical direction.

[0019] Optionally, the first driving device includes:

[0020] a guide sleeve fixedly arranged; an outer wall of the guide sleeve is provided with a limiting slide continuously extending along the vertical direction; the limiting slide includes a linear segment located at the lower side and an arc segment located at the upper side;

[0021] a guide column, one end of which is connected to the sealing cover, and the other end of which penetrates through the guide sleeve along the vertical direction and is in sliding fit with the guide sleeve; an outer wall of the guide column is provided with a limiting column which is slidable along the limiting slide;

[0022] a linear driver for driving the guide column to reciprocally move along the vertical direction.

[0023] Optionally, the gas path unit includes:

[0024] a gas pipeline arranged on the sealing cover and including an air passage located in the sealing cover; when the sealing cover is in the first position, the air passage faces the inside of the mold cavity;

[0025] a first gas path assembly for providing the cleaning gas;

[0026] a second gas path assembly for pumping negative pressure;

[0027] Both the first gas path assembly and the second gas path assembly selectively communicate with the gas pipeline.

[0028] Optionally, the cross section of the mold cavity is circular; the gas pipeline includes:

[0029] A main pipeline is arranged inside the sealing cover and extends along the radial direction of the mold cavity; the main pipeline is rotatable around the axis of the mold cavity under the driving of a second driving device;

[0030] A plurality of air vents are arranged on the main pipeline; the plurality of air vents are sequentially and staggeredly arranged along the radial direction of the mold cavity, so that when the main pipeline rotates, the cleaning gas sprayed from the plurality of air vents covers all areas of the inner wall of the mold cavity.

[0031] Optionally, the gas pipeline further comprises a secondary pipeline in communication with the main pipeline;

[0032] The secondary pipeline is rotatably arranged on the sealing cover and coaxial with the mold cavity;

[0033] The first gas path assembly and the second gas path assembly are selectively in communication with the secondary pipeline;

[0034] The second driving device comprises:

[0035] A driving motor is fixedly arranged on the sealing cover;

[0036] A transmission mechanism is arranged between the output end of the driving motor and the secondary pipeline to drive the secondary pipeline to rotate.

[0037] Optionally, the gas pipeline further comprises a tee pipe; a first port of the tee pipe is in communication with one end of the secondary pipeline away from the main pipeline through a rotary joint;

[0038] The first gas path assembly comprises a first gas pump and a gas storage container for storing the cleaning gas; the gas inlet of the first gas pump is in communication with the gas storage container; the gas outlet of the first gas pump is in communication with the second port of the tee pipe through a first gas path; a first valve is arranged on the first gas path;

[0039] The second gas path assembly comprises a second gas pump and a collection container; the gas outlet of the second gas pump is in communication with the collection container; the gas inlet of the second gas pump is in communication with the third port of the tee pipe through a second gas path; a second valve is arranged on the second gas path.

[0040] Optionally, the cooling channel comprises a circumferential cooling section and a bottom cooling section in communication with each other;

[0041] The circumferential cooling section is helical and arranged around the peripheral wall of the circumferential inner wall of the mold cavity; the bottom cooling section is serpentine and arranged below the bottom wall of the mold cavity.

[0042] Optionally, the cooling channel has an inner diameter of 2-5 mm.

[0043] The cooling channel further comprises a liquid inlet and a liquid outlet penetrating the outer wall of the forming die.

[0044] Optionally, the cleaning mechanism further comprises a frame body provided with a roller; the first driving device and the gas path unit are both mounted on the frame body.

[0045] The technical scheme of the embodiment of the present application has at least the following advantages and beneficial effects:

[0046] The forging device for forgings provided by the present application can realize efficient and safe cleaning of magnesium scraps in the die cavity of the die through the three-step collaborative cleaning process of "low-temperature embrittlement-gas blowing-negative pressure separation" by virtue of the arrangement of the cooling channel, the sealing cover and the gas path unit. The whole cleaning process does not need manual participation and is safe and controllable, thereby avoiding the safety hazards brought by traditional manual cleaning and reducing the labor intensity. Moreover, the time for completing one cleaning can be controlled within several minutes, thereby effectively improving the cleaning efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 The structural schematic diagram of the forging device for forgings provided by the embodiment of the present application in one state is shown, which shows the case when the sealing cover is in the first position;

[0048] Figure 2 The structural schematic diagram of the forging device for forgings provided by the embodiment of the present application in another state is shown, which shows the case when the sealing cover is in the second position;

[0049] Figure 3 The sectional view of Figure 1

[0050] Figure 4 The enlarged view of the local structure at A in Figure 3

[0051] Figure 5 The structural schematic diagram of the cleaning mechanism provided by the embodiment of the present application except the cooling channel in one perspective is shown;

[0052] Figure 6 The structural schematic diagram of the cleaning mechanism provided by the embodiment of the present application except the cooling channel in another perspective is shown;

[0053] Figure 7 The structural schematic diagram of the sealing cover and the first driving device provided by the embodiment of the present application is shown;

[0054] Figure 8 The structural schematic diagram of the guide sleeve provided by the embodiment of the present application is shown;

[0055] ​​Figure 9 For Figure 6 Local structure at B is enlarged;

[0056] Figure 10 The structure diagram of the main pipe and the auxiliary pipe provided by the embodiment of the present application.

[0057] Icon: 10-frame, 20-molding die, 21-die cavity, 22-take and put opening, 30-forging head, 40-hydraulic system, 50-cleaning mechanism, 51-cooling channel, 511-liquid inlet, 512-liquid outlet, 513-circumferential cooling section, 514-bottom cooling section, 52-sealing cover, 53-first driving device, 531-guide sleeve, 532-guide column, 533-linear driver, 534-limiting slide, 5341-linear section, 5342-arc section, 535-limiting column, 54-gas path unit, 541-gas pipeline, 5411-ventilation port, 5412-main pipe, 5413-auxiliary pipe, 5414-three-way pipe, 5415-rotary joint, 542-first gas path assembly, 5421-first gas pump, 5422-gas storage container, 5423-first gas path, 5424-first valve, 543-second gas path assembly, 5431-second gas pump, 5432-collection container, 5433-second gas path, 5434-second valve, 55-flexible sealing ring, 56-second driving device, 561-driving motor, 562-transmission mechanism, 57-frame body. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in combination with specific embodiments. The same reference signs in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0059] Compared with the embodiments shown in the drawings, the feasible implementation schemes within the scope of protection of the present application can have fewer components, other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. In addition, two or more components in the drawings can be implemented in a single component, or a single component shown in the drawings can be implemented as multiple separate components.

[0060] The embodiment of the present application provides a forging device for forgings, in particular a forging press suitable for processing cylindrical magnesium alloy forgings such as automobile steering columns. Figure 1 and Figure 2The schematic diagrams of the forging apparatus provided in the embodiments of the present invention are shown in two different states. Figure 3 for Figure 1 A sectional view; Figure 4 for Figure 3 Enlarged view of the local structure at point A in the middle.

[0061] like Figures 1 to 3 As shown, according to an embodiment of the present invention, the forging apparatus may include a frame 10, a forming die 20, and a forging head 30.

[0062] The forming mold 20 is fixedly mounted on the frame 10. The forming mold 20 defines a mold cavity 21 with a pick-and-place opening 22 at the top. The pick-and-place opening 22 is mainly used for the magnesium alloy forging to be forged to enter the mold cavity 21 and for the forged magnesium alloy forging to leave the mold cavity 21.

[0063] The forging head 30 is arranged vertically above the pick-and-place port 22. Exemplarily, the forging head 30 can be vertically reciprocated under the drive of a hydraulic system 40 mounted on the frame 10.

[0064] The above-described structure is the structure of a forging press known in the prior art for die forging cylindrical magnesium alloy forgings. Its specific working process will not be described in detail here.

[0065] As can be seen from the description of the invention in the background section, in order to effectively overcome the technical problems caused by manually cleaning magnesium shavings from the mold cavity 21 with a handheld scraper, the following description continues... Figures 1 to 3 The forging apparatus provided in this embodiment of the invention may further include a cleaning mechanism 50. The cleaning mechanism 50 is mainly used to replace manual cleaning of magnesium shavings remaining in the mold cavity 21 after forging.

[0066] Specifically, in combination Figures 3 to 6 As shown, the cleaning mechanism 50 may include a cooling channel 51, a sealing cover 52, a first drive device 53, and an air passage unit 54.

[0067] like Figure 4 As shown, the cooling channel 51 is disposed on the periphery of the mold cavity 21. Exemplarily, the cooling channel 51 can be a microchannel integrally formed inside the molding die 20 by injection molding. This cooling channel 51 is used to selectively supply coolant to cool the mold cavity 21, thereby reducing the temperature of magnesium chips remaining in the mold cavity 21.

[0068] The forming die 20 can be made of copper-tungsten alloy, so that the cold can be conducted to the die cavity 21 more quickly to improve the refrigeration efficiency. The cooling liquid can be liquid nitrogen or low-temperature ethanol, so that the temperature of the die cavity 21 can be sharply reduced in a short time, further improving the refrigeration efficiency. The cooling channel 51 can include a liquid inlet 511 and a liquid outlet 512 penetrating through the outer side wall of the forming die 20. The liquid inlet 511 can be in communication with an external cooling liquid source, so that the cooling liquid provided by the external cooling liquid source can enter the cooling channel 51 through the liquid inlet 511 and flow out of the forming die 20 from the liquid outlet 512.

[0069] The inventors of the present application have found that the brittleness of magnesium chips is significantly enhanced at low temperatures (e.g. below 0°C), which makes the magnesium chips more fragile. At the same time, under low temperature conditions, the difference in the thermal expansion coefficient between the magnesium chips and the inner wall of the die cavity 21 will result in a weakened interfacial bonding force between them, making the magnesium chips more easily separated from the inner wall of the die cavity 21. Therefore, by arranging the cooling channel 51 to cool the die cavity 21, the magnesium chips on the inner wall of the die cavity 21 are more fragile and more easily separated from the inner wall of the die cavity 21, thereby facilitating subsequent further cleaning of the magnesium chips.

[0070] The sealing cover 52 is mainly used to selectively seal the access opening 22 of the die cavity 21. Specifically, the sealing cover 52 can be driven by the first driving device 53 to move between a plurality of positions. The plurality of positions include a first position (see Figure 1 、 Figure 3 or Figure 4 ) for sealing the access opening 22, and a second position (see Figure 2 ) beside the forming die 20. In this way, when cleaning the magnesium chips, a completely sealed die cavity 21 is constructed, and when not cleaning the magnesium chips, the sealing cover 52 can be located beside the forming die 20 to avoid affecting the normal work of the forging head 30.

[0071] The gas path unit 54 is configured to selectively spray cleaning gas to the inner wall of the die cavity 21 or create a negative pressure environment in the die cavity 21 when the sealing cover 52 is in the first position.

[0072] Based on the above arrangement, the magnesium chips in the die cavity 21 can be cleaned by the following method:

[0073] First, the sealing cover 52 is driven by the first driving device 53 to move from the second position shown in Figure 2 to the first position shown in Figure 1 to seal the access opening 22 of the die cavity 21, thereby constructing a completely sealed die cavity 21, see Figure 4Subsequently, cooling liquid is introduced into the cooling channel 51 to cool the mold cavity 21, so that the magnesium chips in the mold cavity 21 are more brittle and are more easily separated from the inner wall of the mold cavity 21.

[0074] On this basis, the inner wall of the mold cavity 21 is first sprayed with high-pressure cleaning gas by the gas path unit 54, so that the magnesium chips adhering to the inner wall of the mold cavity 21 are blown down by the cleaning gas, and the magnesium chips in the mold cavity 21 are further broken, so that the magnesium chips are more easily sucked away. The cleaning gas can be but is not limited to argon. By using argon, on the one hand, it is beneficial to reduce the oxygen concentration in the mold cavity 21, so as to establish a safer cleaning environment in the mold cavity 21. On the other hand, the high-density characteristics of argon can enhance the stripping efficiency of the gas flow on the embrittled magnesium chips, and the chemical inertness can not only prevent the secondary oxidation of the magnesium chips during the cleaning process, but also effectively avoid other chemical reactions, which provides the possibility for subsequent recycling of high-purity magnesium chips.

[0075] Subsequently, the gas path unit 54 stops spraying the cleaning gas, and a negative pressure environment is established in the mold cavity 21 by the gas path unit 54 to separate the gas in the mold cavity 21 together with the magnesium chips from the mold cavity 21, thereby completing the cleaning of the magnesium chips. After the magnesium chip cleaning is completed, the sealing cover 52 returns to the second position to prepare for the next magnesium alloy forging forging.

[0076] According to the embodiments of the present application, by the arrangement of the cooling channel 51, the sealing cover 52 and the gas path unit 54, the magnesium chips in the mold cavity 21 can be efficiently and safely cleaned by the three-step collaborative cleaning process of "low-temperature embrittlement-gas blowing-negative pressure separation". The entire cleaning process does not require manual intervention and is safe and controllable, avoiding the safety hazards brought by traditional manual cleaning and reducing the labor intensity. Moreover, the time for completing one cleaning can be controlled within a few minutes, effectively improving the cleaning efficiency.

[0077] In some possible embodiments, the cross section of the mold cavity 21 is circular to adapt to the cylindrical magnesium alloy forging. In order to further improve the refrigeration effect on the mold cavity 21, it is continued to refer to Figure 4 As shown in the figure, the cooling channel 51 can include a circumferential cooling section 513 and a bottom cooling section 514 which are in communication with each other.

[0078] The circumferential cooling section 513 is mainly used for cooling the circumferential inner wall of the mold cavity 21, and can be in a spiral shape and arranged around the circumferential inner wall of the mold cavity 21. The bottom cooling section 514 is mainly used for cooling the bottom inner wall of the mold cavity 21, and can be in a meandering shape (similar to a meandering "serpent" or "S shape") and laid under the bottom wall of the mold cavity 21.

[0079] This design helps to extend the flow time of the coolant inside the cooling channel 51, thereby allowing the flowing coolant to fully cool the mold cavity 21 and improve the cooling effect. Furthermore, when the cooling channel 51 includes a circumferential cooling section 513 and a bottom cooling section 514, the inlet 511 can be connected to the top of the circumferential cooling section 513, and the outlet 512 can be connected to the bottom cooling section 514. This allows the coolant entering the circumferential cooling section 513 through the inlet 511 to flow towards the bottom cooling section 514 under gravity and finally exit from the outlet 512, reducing the pressure required for the coolant to flow within the cooling channel 51.

[0080] In some possible embodiments, the cooling channel 51 can specifically be a microchannel with an inner diameter of 2-5 mm. The inventors of this invention have found that when the coolant is liquid nitrogen, if the inner diameter of the cooling channel 51 is less than 2 mm, the resistance to the coolant flow within the cooling channel 51 will be too high, easily leading to uneven cooling; if the inner diameter of the cooling channel 51 is greater than 5 mm, it will affect the structural strength of the molding die 20. Taking all factors into consideration, embodiments of this invention recommend an inner diameter of 2-5 mm for the cooling channel 51 to balance cooling effect and structural strength of the molding die 20.

[0081] In some possible embodiments, combined Figure 4 As shown, a flexible sealing ring 55 may also be provided on the sealing cover 52 surrounding the loading / unloading port 22. When the sealing cover 52 is in the first position sealing the loading / unloading port 22, the flexible sealing ring 55 presses against the top surface of the molding die 20 surrounding the loading / unloading port 22 to form a reliable seal, thereby improving the sealing effect. The flexible sealing ring 55 may be, but is not limited to, a fluororubber sealing ring with an Ω-shaped cross-section.

[0082] Based on this, the multiple positions of the aforementioned sealing cover 52 may further include a third position between the first and second positions. Specifically, when the sealing cover 52 is in the third position, the flexible sealing ring 55 is parallel to the plane containing the pick-up / drop-off port 22. Furthermore, the movement of the sealing cover 52 between the first and third positions is a vertical linear movement.

[0083] Based on the above settings, when it is necessary for the sealing cover 52 to move from the first position to the second position, the sealing cover 52 will first move from the first position to the third position, and then move from the third position to the second position; correspondingly, when it is necessary for the sealing cover 52 to move from the second position to the first position, the sealing cover 52 will first move from the second position to the third position, and then move from the third position to the first position.

[0084] Understandably, when the sealing cover 52 is in the third position, the flexible sealing ring 55 is parallel to the plane of the pick-up and drop-off port 22, and the movement of the sealing cover 52 between the first and third positions is a vertical linear movement. Therefore, as the sealing cover 52 moves from the third position to the first position to seal the pick-up and drop-off port 22, the flexible sealing ring 55 will continuously approach the pick-up and drop-off port 22 in a manner that is basically parallel to the plane of the pick-up and drop-off port 22, thereby squeezing the molding die 20 around the pick-up and drop-off port 22 to form a seal. This design allows the flexible sealing ring 55 to deform in an orderly manner along its own axial direction, avoiding bending or scratching of the molding die 20. While ensuring the sealing effect, it also helps to improve the service life of the flexible sealing ring 55.

[0085] In some possible embodiments, the first drive device 53 may be constructed, but is not limited to, in the manner described below, to enable the movement of the sealing cover 52 between the first position, the second position, and the third position.

[0086] Combination Figure 5 , Figure 7 and Figure 8 As shown, the first driving device 53 may include a guide sleeve 531, a guide post 532, and a linear actuator 533. The guide sleeve 531 extends vertically and is fixedly installed. The outer wall of the guide sleeve 531 is provided with a vertically continuously extending limiting slide 534, which includes a lower straight segment 5341 and an upper arcuate segment 5342. The top end of the straight segment 5341 and the bottom end of the arcuate segment 5342 are smoothly connected.

[0087] One end (top) of the guide post 532 is connected to the sealing cover 52, and the other end (bottom) of the guide post 532 passes vertically through the guide sleeve 531 and slides with the guide sleeve 531, so that the guide post 532 can drive the sealing cover 52 to slide vertically. At the same time, the outer wall of the guide post 532 is provided with a limiting post 535 that can slide along the limiting slide 534, that is, the limiting post 535 is slidably disposed in the limiting slide 534.

[0088] The linear actuator 533 is used to drive the guide post 532 to reciprocate vertically. Exemplarily, the linear actuator 533 can be a conventional linear drive device such as a hydraulic cylinder, pneumatic cylinder, or electric actuator. Furthermore, the output end of the linear actuator 533 can be connected to the end of the guide post 532 furthest from the sealing cover 52, i.e., the bottom end of the guide post 532.

[0089] Based on the above settings, when the sealing cover 52 is in the first position, the limiting post 535 is located at the bottom end of the straight segment 5341, see Figure 1 , Figure 5 or Figure 7When the linear driver 533 drives the guide column 532 to move upward along the vertical direction, the limiting column 535 will first slide in the linear segment 5341, and at this time, the guide column 532 will drive the sealing cover 52 to move upward along the vertical direction from the first position; when the limiting column 535 moves to the connection position of the linear segment 5341 and the arc segment 5342, the guide column 532 just drives the sealing cover 52 to move to the third position; thereafter, with the linear driver 533 continuing to drive the guide column 532 to move upward along the vertical direction, the limiting column 535 enters the arc segment 5342 and continues to move upward along the arc segment 5342, at this time, the guide column 532 will not only continue to move upward along the vertical direction, but also rotate in the horizontal plane, so as to drive the sealing cover 52 to move from the third position to the second position beside the forming die 20 in the form of horizontal rotation while moving upward, at this time, the limiting column 535 is located at the top end of the arc segment 5342, see Figure 2 .

[0090] It can be understood that this design not only can realize the arbitrary movement of the sealing cover 52 between the first position, the second position and the third position, but also the whole movement only needs one linear driver 533 as a power source, which effectively reduces the energy consumption and cost.

[0091] It can be understood that this design not only can realize the arbitrary movement of the sealing cover 52 between the first position, the second position and the third position, but also the whole movement only needs one linear driver 533 as a power source, which effectively reduces the energy consumption and cost.

[0092] In some possible embodiments, the gas path unit 54 can be configured in the following manner, but is not limited to, so as to enable the gas path unit 54 to selectively spray cleaning gas to the die cavity 21 or establish a negative pressure environment in the die cavity 21.

[0093] In combination with the content shown in FIG. Figures 4 to 6 The gas path unit 54 can include a gas pipeline 541, a first gas path assembly 542 and a second gas path assembly 543. The gas pipeline 541 is arranged on the sealing cover 52 so as to be able to move with the sealing cover 52. The gas pipeline 541 includes an air inlet 5411 located in the sealing cover 52, and when the sealing cover 52 is in the first position, the air inlet 5411 faces the inside of the die cavity 21.

[0094] The first gas path assembly 542 is used to provide cleaning gas. The second gas path assembly 543 is used to create negative pressure. Both the first gas path assembly 542 and the second gas path assembly 543 are selectively connected to the gas line 541. Specifically, when the first gas path assembly 542 is connected to the gas line 541, the second gas path assembly 543 is disconnected from the gas line 541; when the second gas path assembly 543 is connected to the gas line 541, the first gas path assembly 542 is disconnected from the gas line 541.

[0095] Thus, when cleaning gas needs to be injected into the mold cavity 21, the first air passage assembly 542 is connected to the gas pipeline 541, and the second air passage assembly 543 is disconnected from the gas pipeline 541. The cleaning gas provided by the first air passage assembly 542 enters the gas pipeline 541 and is then sprayed onto the inner wall of the mold cavity 21 through the vent 5411. Correspondingly, when a negative pressure environment needs to be established, the first air passage assembly 542 is disconnected from the gas pipeline 541, and the second air passage assembly 543 is connected to the gas pipeline 541. The second air passage assembly 543 draws negative pressure into the mold cavity 21 through the vent 5411, and the gas in the mold cavity 21, along with magnesium shavings, is drawn out through the vent 5411.

[0096] This design allows the first gas path assembly 542 and the second gas path assembly 543 to share the gas pipeline 541, which helps to optimize the structure of the gas path unit 54 and reduce costs.

[0097] In some possible embodiments, when the cross-section of the mold cavity 21 is circular, combined with Figure 4 and Figure 10 As shown, the gas line 541 may further include a main line 5412. The main line 5412 is located inside the sealing cover 52 and extends radially along the mold cavity 21. The main line 5412 can rotate horizontally about the axis of the mold cavity 21 under the drive of the second drive device 56. In this case, selective communication between the first gas path assembly 542 and the second gas path assembly 543 and the gas line 541 refers to communication with the main line 5412.

[0098] Furthermore, the main pipeline 5412 is closed at both ends along its own axial direction, and the main pipeline 5412 is provided with multiple vents 5411 as described above. The multiple vents 5411 are arranged alternately along the radial direction of the mold cavity 21 (see...). Figure 4 or Figure 10 This ensures that when the main pipeline 5412 rotates, the cleaning gas ejected from the multiple vents 5411 covers all areas of the inner wall of the mold cavity 21. In other words, for each rotation of the main pipeline 5412, the sum of the areas swept by the projections of the multiple vents 5411 onto the bottom wall of the mold cavity 21 is not less than the area of ​​the bottom wall of the mold cavity 21.

[0099] Based on the above arrangement, during the injection of the cleaning gas, only the first gas path assembly 542 needs to be communicated with the main pipe 5412, and the main pipe 5412 is rotated, so that the cleaning gas can be injected to all areas of the inner wall of the mold cavity 21. Correspondingly, during the negative pressure extraction, only the second gas path assembly 543 needs to be communicated with the main pipe 5412, and the main pipe 5412 is rotated, so that the gas and magnesium chips in all areas inside the mold cavity 21 can be efficiently extracted. This design not only helps to improve the uniformity during the injection of the cleaning gas and the negative pressure extraction, but also further simplifies the structure of the gas pipe 541.

[0100] In some possible embodiments, in combination with the content shown in Figure 4 and Figure 9 , the gas pipe 541 can further include a sub-pipe 5413 communicated with the main pipe 5412. The sub-pipe 5413 is rotationally arranged on the sealing cover 52 and coaxial with the mold cavity 21. The bottom end of the sub-pipe 5413 can be communicated with the main pipe 5412, and the top end can extend from the top of the sealing cover 52 to outside the sealing cover 52. The first gas path assembly 542 and the second gas path assembly 543 are both selectively communicated with the sub-pipe 5413.

[0101] The second driving device 56 can include a driving motor 561 and a transmission mechanism 562. The driving motor 561 can be fixedly arranged on the top of the sealing cover 52, and the output end of the driving motor 561 is drivingly connected with the sub-pipe 5413 through the transmission mechanism 562, so as to drive the sub-pipe 5413 to rotate, thereby driving the main pipe 5412 to rotate around the axis of the mold cavity 21 through the sub-pipe 5413. Exemplarily, the transmission mechanism 562 can be a gear transmission structure, for example, a driven gear can be sleeved on the part of the sub-pipe 5413 extending outside the top of the sealing cover 52, a driving gear is arranged on the output end of the driving motor 561, and the driven gear is engaged with the driving gear, so as to achieve the transmission between the driving motor 561 and the sub-pipe 5413. This design can simplify the structure of the second driving device 56 and the gas pipe 541 as much as possible while enabling the main pipe 5412 to rotate around the axis of the mold cavity 21.

[0102] In some possible embodiments, in order to enable the first gas path assembly 542 and the second gas path assembly 543 to be selectively communicated with the rotatable sub-pipe 5413, in combination with the content shown in Figures 4 to 6 , Figure 9 , the gas pipe 541 can further include a three-way pipe 5414. The first port of the three-way pipe 5414 is communicated with one end of the sub-pipe 5413 away from the main pipe 5412 through a rotary joint 5415, so that when the sub-pipe 5413 drives the main pipe 5412 to rotate, the fixed part of the rotary joint 5415 remains stationary.

[0103] AsFigure 5 As shown, the first gas path assembly 542 can include a first gas pump 5421 and a gas storage container 5422 for storing the cleaning gas. The gas inlet of the first gas pump 5421 is in communication with the gas storage container 5422; the gas outlet of the first gas pump 5421 is in communication with the second port of the three-way pipe 5414 through the first gas path 5423. The first gas path 5423 is provided with a first valve 5424.

[0104] As shown, the second gas path assembly 543 includes a second gas pump 5431 and a collection container 5432. The gas outlet of the second gas pump 5431 is in communication with the collection container 5432; the gas inlet of the second gas pump 5431 is in communication with the third port of the three-way pipe 5414 through the second gas path 5433. The second gas path 5433 is provided with a second valve 5434. Figure 6

[0105] Among them, at least part of the first gas path 5423 and the second gas path 5433 can be a hose (not shown in the figure) to adapt to the movement of the sealing cover 52. The first valve 5424 and the second valve 5434 can both be solenoid valves.

[0106] Based on the above setting, when the second driving device 56 drives the sub-pipe 5413 to rotate, the positions of the three-way pipe 5414, the first gas path 5423 and the second gas path 5433 remain unchanged under the action of the rotary joint 5415. On this basis, when it is needed to spray the cleaning gas into the mold cavity 21, the first valve 5424 is opened and the second valve 5434 is closed, and the first gas pump 5421 is started to extract the cleaning gas stored in the gas storage container 5422, so that the cleaning gas flows through the first gas path 5423, the three-way pipe 5414, the rotary joint 5415, the sub-pipe 5413 and the main pipe 5412 in turn, and is sprayed into the mold cavity 21 through the air port 5411 on the main pipe 5412; correspondingly, when it is needed to establish a negative pressure environment, the second valve 5434 is opened and the first valve 5424 is closed, and the second gas pump 5431 is started to extract the gas and magnesium chips in the mold cavity 21 to the collection container 5432 for collection.

[0107] This design not only realizes selective spraying of cleaning gas into the mold cavity 21 or establishment of a negative pressure environment in the mold cavity 21, but also realizes centralized collection of magnesium chips to facilitate subsequent recycling of the magnesium chips.

[0108] Of course, a gas-solid separator (such as a cyclone separator) can also be added to the gas flow path of the second gas path assembly 543 if possible, for example, a gas-solid separator can be further added downstream of the collection container 5432 to separate the gas and magnesium chips extracted from the mold cavity 21 through the gas-solid separator, thereby further improving the convenience of recycling the magnesium chips. ​

[0109] In some possible embodiments, as shown in Figure 5 or Figure 6 illustrated, the cleaning mechanism 50 further comprises a rack 57 provided with a roller. The aforementioned first driving device 53 (in particular, the guide sleeve 531 and the linear driver 533 and the like), the air path unit 54 (in particular, the first air pump 5421, the second air pump 5431, the air storage container 5422 and the collection container 5432 and the like in the air path unit 54) can be mounted on the rack 57. In this way, the structural integrity of the cleaning mechanism 50 can be ensured, and the position of the cleaning mechanism 50 can be adjusted as needed, so that the disassembly and assembly process of the entire forging device is more convenient and fast.

[0110] The preferred embodiments of the present application have been described above with the aid of drawings, but those skilled in the art will foresee various modifications and variations that fall within the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A forging device for a forging, characterized by comprising: The utility model relates to a kind of clean-up mechanism, including: Rack; Forming die, fixedly arranged on the rack; The forming die defines the die cavity with top having pick-and-place mouth; Forging head, vertically movable arrangement is arranged in the top of pick-and-place mouth; And, The clean-up mechanism, the clean-up mechanism includes: Cooling channel, be located in the periphery of the die cavity;The cooling channel is used to selectively supply cooling fluid flow, to cool the die cavity; Sealing cover, it can be driven by first driving device and move between multiple positions;The multiple positions include the first position of sealing pick-and-place mouth, and the second position of being located at the side of the forming die; Gas path unit, the gas path unit is configured to selectively spray cleaning gas to the inner wall of the die cavity or establish negative pressure environment in the die cavity when the sealing cover is in the first position; Flexible sealing ring is provided on the sealing cover around the pick-and-place mouth;When the sealing cover is in the first position, the flexible sealing ring extrudes the forming die of the pick-and-place mouth periphery; The multiple positions also include the third position between the first position and the second position;When the sealing cover is in the third position, the flexible sealing ring is parallel with the plane where the pick-and-place mouth is located; And, the movement of the sealing cover between the first position and the third position is vertical linear motion; The gas path unit includes: Gas pipeline, provided on the sealing cover, and including air vent in the sealing cover;When the sealing cover is in the first position, the air vent is directed to the inside of the die cavity; First gas path component, for providing the cleaning gas; Second gas path component, for pumping negative pressure; The first gas path component and the second gas path component are selectively communicated with the gas pipeline; The cross section of the die cavity is circular;The gas pipeline includes: Main pipeline, located inside the sealing cover, and extends along the radial direction of the die cavity;The main pipeline can be rotated around the axis of the die cavity under the drive of second driving device; Multiple air vents are provided on the main pipeline;Multiple air vents are sequentially staggered arranged along the radial direction of the die cavity, so that when the main pipeline rotates, the cleaning gas sprayed by multiple air vents covers all areas of the inner wall of the die cavity.

2. The forging apparatus according to claim 1, characterized by The first driving device includes: Guide sleeve, fixedly arranged;The outer wall of the guide sleeve is provided with limit slide that extends continuously along vertical direction;The limit slide includes linear segment located below and arc segment located above; Guide column, one end is connected to the sealing cover, and the other end passes through the guide sleeve along vertical direction, and is in sliding fit with the guide sleeve;The outer wall of the guide column is provided with limit column that can slide along the limit slide; Linear driver, for driving the guide column to reciprocate along vertical direction.

3. The forging apparatus according to claim 1, wherein The gas pipeline also includes auxiliary pipeline communicated with the main pipeline; The auxiliary pipeline is rotationally arranged on the sealing cover, and is coaxial with the die cavity; The first gas path component and the second gas path component are selectively communicated with the auxiliary pipeline; The second driving device includes: Driving motor, fixedly arranged on the sealing cover; A transmission mechanism is arranged between the output end of the driving motor and the auxiliary pipeline to drive the auxiliary pipeline to rotate.

4. The forging apparatus according to claim 3, wherein The gas pipeline further comprises a tee joint, a first port of the tee joint being communicated with one end of the auxiliary pipeline away from the main pipeline through a rotary joint; The first gas path assembly comprises a first gas pump and a gas storage container for storing the cleaning gas; an air inlet of the first gas pump is communicated with the gas storage container; an air outlet of the first gas pump is communicated with a second port of the tee joint through a first gas path; and a first valve is arranged on the first gas path. The second gas path assembly comprises a second gas pump and a collecting container; an air outlet of the second gas pump is communicated with the collecting container; an air inlet of the second gas pump is communicated with a third port of the tee joint through a second gas path; and a second valve is arranged on the second gas path.

5. The forging apparatus according to claim 1, wherein The cooling channel comprises a circumferential cooling section and a bottom cooling section which are communicated with each other; The circumferential cooling section is in a spiral shape and surrounds the periphery of the circumferential inner wall of the mold cavity; and the bottom cooling section is in a meandering shape and is laid under the bottom wall of the mold cavity.

6. The apparatus according to claim 1 or 5, wherein The inner diameter of the cooling channel is 2-5 mm; The cooling channel further comprises a liquid inlet and a liquid outlet which penetrate through the outer sidewall of the forming mold.

7. The forging apparatus according to claim 1, wherein The cleaning mechanism further comprises a frame body provided with a roller; and the first driving device and the gas path unit are both mounted on the frame body.

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