Continuous hot extrusion device for induction heating powder

Abstract

The invention relates to the technical field of metal powder processing, in particular to an induction heating powder continuous hot extrusion device which comprises a machine table, a supporting frame is mounted at the top of the machine table, mounting frames are symmetrically mounted on the outer wall of a rotating shaft, and cover plate assemblies matched with heating and heat preservation assemblies are slidably mounted on the mounting frames. By arranging the two upper dies capable of being switched back and forth and the lower die, when metal powder is subjected to hot extrusion machining, one upper die can be switched to the position above the lower die through the driving assembly, then the upper die is switched to the position above the lower die through the connecting column, and then the lower die is switched to the position above the lower die through the connecting column. Then the upper die is pressed downwards through the driving assembly and is in butt joint with the lower die, assembling of the dies is completed, normal operation of work is guaranteed, after one set of materials is machined, the driving assembly can drive the machined upper die to be switched to the discharging position for discharging, and at the moment, the other set of upper die is switched to the position above the lower die; and the continuous hot extrusion processing of the metal powder is realized by repeating the steps.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder processing, and particularly to an induction heating powder continuous hot extrusion device. Background Art

[0002] A block-shaped contact generally refers to an electrical contact component with a block shape, which is widely used in the electrical and electronic fields. It is generally made of metals with good electrical conductivity such as copper and silver through hot extrusion molding. That is, before extrusion, the blank or powder is first heated to a temperature above the metal crystallization temperature and then hot extruded into a rod shape, and then formed into a block by cutting. However, the existing hot extrusion device for hot extruding metal powder into a strip needs to wait for the mold of the extrusion device to cool down before disassembling the mold to take out the finished product after the product is extruded and formed, resulting in non-continuous processing, which reduces the processing efficiency of the powder hot extrusion device, such as the patent document with the application number CN201710560944.8. Therefore, the present invention has developed an induction heating powder continuous hot extrusion device to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide an induction heating powder continuous hot extrusion device, which can continuously hot extrude and process metal powder and improve the processing efficiency.

[0004] To achieve the above purpose, the technical solution provided by the present invention is as follows: An induction heating powder continuous hot extrusion device includes a machine table. A heating and heat preservation component with an opening at the top and a lower mold are installed on the top of the machine table, and the height of the lower mold is lower than that of the heating and heat preservation component and is located inside the cavity of the heating and heat preservation component. An extrusion power component inserted into the lower mold is installed at the bottom of the machine table; A support frame is installed on the top of the machine table. A rotating shaft and a reciprocating lead screw are rotatably connected through the top of the support frame, and the rotating shaft penetrates through both ends of the reciprocating lead screw. Mounting frames are symmetrically installed on the outer wall of the rotating shaft. A cover plate component cooperating with the heating and heat preservation component is slidably installed on the mounting frames. An upper mold is installed at the top of the inner cavity of the cover plate component through a connecting column. A sliding seat is threadedly connected to the outer wall of the reciprocating lead screw. A first convex block for pushing the cover plate component downward is arranged at the bottom of one side of the sliding seat. A limiting rod is installed on the top of the support frame, and the limiting rod passes through the sliding seat. A driving component is installed on the top of the support frame. The driving component includes a forward and reverse servo motor. A first driven bevel gear is installed on the outer wall of the rotating shaft. A second driven bevel gear is installed on the outer wall of the reciprocating lead screw. An incomplete bevel gear sequentially meshed with the first driven bevel gear and the second driven bevel gear is installed on the output shaft of the forward and reverse servo motor.

[0005] Preferably, the heating and heat preservation component includes a heat preservation sleeve which is coaxially arranged with the lower die. An inductance coil is arranged around the inner wall of the heat preservation sleeve, and an air inlet pipe is communicated with the side wall of the heat preservation sleeve.

[0006] Preferably, the cross-sectional shape of the inner wall of the upper die is conical. An extrusion port is formed at the top of the upper die. A material guiding pipe which is matched with the extrusion port is installed at the top of the inner cavity of the cover plate component, and there is a gap between the bottom of the material guiding pipe and the top of the upper die.

[0007] Preferably, the inductance coil is arranged at the reduced-diameter port position of the upper die.

[0008] Preferably, the cover plate component includes a cover plate. A first sliding column is installed at the top of the cover plate. One end of the first sliding column passes through the top of the mounting frame and is installed with a first limiting block which is matched with the first convex block. A first spring is sleeved on the outer wall of the first sliding column, and the first spring is located between the first limiting block and the mounting frame.

[0009] Preferably, the mounting frame includes a fixed rod connected to the rotating shaft. One end of the fixed rod away from the rotating shaft is connected with a concave mounting seat with an opening downward. One end of the first sliding column passes through the top of the concave mounting seat. Limiting grooves are symmetrically formed on the opposite side walls of the concave mounting seat. Sliding blocks which are matched with the limiting grooves are symmetrically and fixedly connected to the opposite sides of the cover plate.

[0010] Preferably, a positioning column is fixedly connected to the top of one of the concave mounting seats. An arc-shaped positioning groove which is matched with the positioning column is formed at the bottom of the sliding seat.

[0011] Preferably, the extrusion power component includes an electric cylinder. The telescopic end of the electric cylinder is inserted into the lower die and connected with an extrusion gasket. The extrusion gasket is slidably connected with the inner wall of the lower die. The electric cylinder is installed at the bottom of the tabletop of the machine tool through a fixing frame. L-shaped rods are symmetrically fixedly connected to the opposite side walls of the telescopic end of the electric cylinder. One end of the L-shaped rod passes through the tabletop of the machine tool and is located inside the heating and heat preservation component. The free end of the L-shaped rod is provided with an inclined first inclined surface. Locking components for locking the extruded material are symmetrically installed at the opposite sides of the top of the upper die. One ends of the two locking components away from each other both extend out of the edge of the upper die and are provided with second inclined surfaces which are matched with the first inclined surface. When the first inclined surface contacts and presses the second inclined surface, the two locking components are pushed to slide and lock the extruded material.

[0012] Preferably, the locking assembly includes a fixed sleeve and an extrusion column. The extrusion column passes through and slides in the inner cavity of the fixed sleeve. At one end of the two extrusion columns away from each other, extrusion blocks are symmetrically fixedly connected. The extrusion blocks are provided with second inclined surfaces. A second spring is sleeved on the outer wall of the extrusion column, and the second spring is located between the extrusion block and the end of the fixed sleeve. A limiting hole is formed in the top side wall of the fixed sleeve. An elastic limiting column is fixedly connected to the outer wall of the extrusion column and is matched with the limiting hole. When the elastic limiting column is inserted into the limiting hole, the two locking assemblies lock the extruded material.

[0013] Preferably, two unlocking rods that are slidably connected through the top of the cover plate and are matched with the two limiting holes are provided. The tops of the two unlocking rods pass through the mounting frame and are connected to a connecting block. A second convex block is provided at the bottom of one side of the sliding seat, and the second convex block is arranged opposite to the first convex block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing two upper molds that can be switched back and forth and a lower mold, during the hot extrusion processing of metal powder, after one upper mold is switched above the lower mold through the driving assembly, the upper mold can be pressed down and docked with the lower mold through the driving assembly to complete the assembly of the mold, ensuring the normal progress of the work. After a set of materials is processed, the processed upper mold can be driven by the driving assembly to be switched to the blanking position for blanking. At this time, the other set of upper molds is switched above the lower mold, and so on, realizing the continuous hot extrusion processing of metal powder, improving the processing efficiency. And the entire switching process can be achieved only by using a set of driving assemblies, reducing the complexity and cost of the equipment. At the same time, during the entire docking process, the mold first rotates in place and then descends for docking, ensuring the accuracy of the mold docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of the hot extrusion device of the present invention; Figure 2 is a front sectional structural diagram of the hot extrusion device of the present invention; Figure 3 is Figure 2 a schematic enlarged view of the structure at A in Figure 4 is a schematic connection structure diagram of the extrusion power member and its connecting components in the hot extrusion device of the present invention; Figure 5 It is a schematic structural diagram of a cover plate assembly and its connecting components in the hot extrusion device of the present invention; Figure 6 For Figure 5 It is an enlarged schematic structural diagram of part B in Figure 7 It is a schematic connection structure diagram of a rotating shaft and its connecting components in the hot extrusion device of the present invention; Figure 8 It is another schematic structural diagram of a cover plate assembly and its connecting components in the hot extrusion device of the present invention.

[0017] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. Machine table; 2. Heating and heat preservation assembly; 21. Heat preservation sleeve; 22. Inductive coil; 23. Air inlet pipe; 3. Lower die; 4. Extrusion power component; 41. Electric cylinder; 42. Extrusion gasket; 43. Fixed frame; 44. L-shaped rod; 5. Support frame; 6. Rotating shaft; 7. Reciprocating lead screw; 8. Mounting frame; 81. Fixed rod; 82. Concave mounting seat; 83. Positioning column; 9. Cover plate assembly; 91. Cover plate; 92. First sliding column; 93. First limiting block; 94. First spring; 10. Upper die; 101. Extrusion port; 102. Material guiding pipe; 11. Sliding seat; 111. Limiting rod; 112. Arc-shaped positioning groove; 12. First convex block; 13. Driving assembly; 131. Positive and negative servo motor; 132. First driven bevel gear; 133. Second driven bevel gear; 134. Incomplete bevel gear; 14. Locking assembly; 141. Fixed sleeve; 142. Extrusion column; 143. Extrusion block; 144. Second spring; 145. Limiting hole; 146. Elastic limiting column; 147. Mounting rod; 15. Unlocking rod; 151. Connecting block; 16. Second convex block. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] As Figure 1-8 shown: Embodiment 1 of the present invention is: As Figure 1 And 2As shown in the figure, an induction heating powder continuous hot extrusion device includes a machine table 1. On the top of the machine table 1, there is a heating and heat preservation component 2 with an opening at the top and a lower die 3. The height of the lower die 3 is lower than that of the heating and heat preservation component 2 and is located inside the heating and heat preservation component 2. At the bottom of the machine table 1, there is an extrusion power component 4 inserted into the inside of the lower die 3; On the top of the machine table 1, there is a support frame 5. A rotating shaft 6 and a reciprocating lead screw 7 are rotatably connected through the top of the support frame 5. The rotating shaft 6 penetrates through both ends of the reciprocating lead screw 7. On the outer wall of the rotating shaft 6, there are symmetrically installed mounting frames 8. A cover plate component 9 that cooperates with the heating and heat preservation component 2 is slidably installed on the mounting frames 8. At the top of the inner cavity of the cover plate component 9, an upper die 10 is installed through a connecting column. A sliding seat 11 is threadedly connected to the outer wall of the reciprocating lead screw 7. At the bottom of one side of the sliding seat 11, there is a first convex block 12 for pushing the cover plate component 9 downward. On the top of the support frame 5, there is a limiting rod 111, and the limiting rod 111 passes through the sliding seat 11. On the top of the support frame 5, there is a driving component 13. The driving component 13 includes a positive and negative servo motor 131. On the outer wall of the rotating shaft 6, there is a first driven bevel gear 132. On the outer wall of the reciprocating lead screw 7, there is a second driven bevel gear 133. The output shaft of the positive and negative servo motor 131 is installed with an incomplete bevel gear 134 that is sequentially meshed with the first driven bevel gear 132 and the second driven bevel gear 133.

[0020] As Figure 4 shown in the figure, in this embodiment, the heating and heat preservation component 2 includes a heat preservation sleeve 21, and the heat preservation sleeve 21 is coaxially arranged with the lower die 3. An inductor coil 22 is arranged around the inner wall of the heat preservation sleeve 21. The heat preservation sleeve 21 is communicated with an air inlet pipe 23 on the side wall. Among them, when an electric current passes through the inductor coil, an electromagnetic induction phenomenon is generated, causing eddy currents to be generated inside the conductor, thereby generating heat to uniformly heat the die. And high-pressure oxygen can be injected into the heat preservation sleeve through the air inlet pipe.

[0021] As Figure 5 shown in the figure, in this embodiment, the cross-sectional shape of the inner wall of the upper die 10 is conical. An extrusion port 101 is opened at the top of the upper die 10. A material guiding pipe 102 that cooperates with the extrusion port 101 is installed at the top of the inner cavity of the cover plate component 9. And there is a spacing between the bottom of the material guiding pipe 102 and the top of the upper die 10. Setting the inner cross-sectional shape of the upper die to be conical can enable the material to gradually deform during the upward extrusion process and then be extruded from the extrusion port. And the setting of the material guiding pipe can enable the extruded finished product material to be inserted into the material guiding pipe after extrusion at the upper end to play a guiding role and prevent the product from bending.

[0022] As Figure 4 shown in the figure, in this embodiment, the inductor coil 22 is arranged at the variable diameter port position of the upper die 10. The powder material is melted by heat at the variable diameter port position of the upper die and then extruded through an extrusion gasket. Being in a molten state at the variable diameter port can ensure the rapid extrusion of the powder material.

[0023] As shown Figure 5 in the figure, in this embodiment, the cover plate assembly 9 includes a cover plate 91. A first sliding column 92 is installed on the top of the cover plate 91. One end of the first sliding column 92 passes through the top of the mounting frame 8 and is installed with a first limiting block 93 that cooperates with the first convex block 12. A first spring 94 is sleeved on the outer wall of the first sliding column 92, and the first spring 94 is located between the first limiting block 93 and the mounting frame 8. Among them, when the reciprocating lead screw rotates, it can drive the first connecting rod and the first convex block to rotate, so that the first convex block gradually contacts the first limiting block, thereby pushing the cover plate down through the first limiting block and the first sliding column, so that the cover plate presses down against the heat preservation sleeve. During the hot extrusion process of the material, the first convex block can always exert pressure on the first limiting block, thereby ensuring the stability of the connection between the cover plate and the heat preservation sleeve. At the same time, in order to improve the sealing performance between the cover plate and the heat preservation sleeve, a sealing groove and a sealing strip that cooperate with each other are provided at the bottom of the cover plate and the top of the heat preservation sleeve.

[0024] As shown Figure 5 in the figure, in this embodiment, the mounting frame 8 includes a fixed rod 81 connected to the rotating shaft 6. One end of the fixed rod 81 away from the rotating shaft 6 is connected with a concave mounting seat 82 with an opening downward. One end of the first sliding column 92 passes through the top of the concave mounting seat 82. Limiting grooves are symmetrically opened on the opposite side walls of the concave mounting seat 82. Sliders that cooperate with the limiting grooves are symmetrically fixed on the opposite sides of the cover plate 91. The cooperation of the sliders and the sliding grooves can further ensure the stability of the lifting and sliding of the cover plate.

[0025] As shown Figure 5 and 7 in the figure, in this embodiment, in order to make the switching of the upper die more accurate, a positioning column 83 is fixedly connected to the top of a concave mounting seat 82. An arc-shaped positioning groove 112 that cooperates with the positioning column 83 is opened at the bottom of the sliding seat 11. When the upper die is switched, the concave mounting seat can synchronously drive the positioning column to slide along the arc-shaped positioning groove. When the upper die rotates in place, the positioning column can abut against the end of the arc-shaped positioning groove, thereby preventing the upper die from continuing to rotate forward due to inertia and ensuring the accuracy of the switching of the upper die.

[0026] As shown Figure 4 and 6As shown, in this embodiment, in order to enable the material to adhere to the upper mold after extrusion is completed, so that the upper mold can carry the product together during switching, and also to prevent the product from falling due to shaking during switching. Therefore, the extrusion power component 4 includes an electric cylinder 41. The telescopic end of the electric cylinder 41 is inserted into the lower mold 3 and connected with an extrusion gasket 42. The extrusion gasket 42 is slidably connected to the inner wall of the lower mold 3. The electric cylinder 41 is installed at the bottom of the table surface of the machine table 1 through a fixing frame 43. L-shaped rods 44 are symmetrically and fixedly connected to the opposite side walls of the telescopic end of the electric cylinder 41. One end of the L-shaped rod 44 passes through the table surface of the machine table 1 and is located inside the heating and heat preservation component 2. The free end of the L-shaped rod 44 is provided with an inclined first inclined surface. Locking components 14 for locking the extruded material are symmetrically installed on the opposite sides of the top of the upper mold 10. One ends of the two locking components 14 away from each other both extend out of the edge of the upper mold 10 and are provided with second inclined surfaces that cooperate with the first inclined surface. When the first inclined surface and the second inclined surface contact and squeeze, it pushes the two locking components 14 to slide and lock the extruded material. During the hot extrusion process, the electric cylinder pushes the extrusion gasket to slide, thereby pushing the metal powder upward, and then extruding it from the extrusion port to realize the hot extrusion processing of the metal powder. Moreover, using an electric cylinder as the driving force can provide a stable thrust, ensure uniform force on the product, ensure the extrusion effect. At the same time, a jack, a hydraulic cylinder and other devices can also be used as the thrust source. At the same time, the electric cylinder can also drive the L-shaped rod to gradually rise. And when the extrusion gasket completely extrudes the material onto the upper mold, the first inclined surface of the L-shaped rod contacts the second inclined surface of the locking component and pushes the locking component to slide, so as to squeeze and lock the product located in the space between the material guiding pipe and the upper mold through the locking component, so that the product can adhere to the upper mold when the upper and lower molds are separated, and also prevent the product from falling during the switching process.

[0027] As Figure 6 shown, in this embodiment, the locking component 14 includes a fixed sleeve 141 and an extrusion column 142. The extrusion column 142 penetrates and slides in the inner cavity of the fixed sleeve 141. Extrusion blocks 143 are symmetrically and fixedly connected to the opposite ends of the two extrusion columns 142 away from each other. The extrusion block 143 is provided with a second inclined surface. A second spring 144 is sleeved on the outer wall of the extrusion column 142, and the second spring 144 is located between the extrusion block 143 and the end of the fixed sleeve 141. A limiting hole 145 is opened on the top side wall of the fixed sleeve 141. An elastic limiting column 146 that cooperates with the limiting hole 145 is fixedly connected to the outer wall of the extrusion column 142. When the elastic limiting column 146 is inserted into the limiting hole 145, the two locking components 14 lock the extruded material. When the first inclined surface and the second inclined surface contact, it can push the extrusion column to slide, so that one end of the extrusion column gradually approaches the product. At the same time, the elastic limiting column also gradually approaches the limiting hole until the elastic limiting column is inserted into the limiting hole, and the extrusion column also squeezes and fixes the product, realizing the automatic locking of the product.

[0028] As Figure 5 shown, in this embodiment, in order to facilitate unlocking of the product, two unlocking rods 15 that cooperate with the two limit holes 145 are slidably connected through the top of the cover plate 91. The tops of the two unlocking rods 15 pass through the mounting frame 8 and are connected with a connecting block 151. A second convex block 16 is arranged at the bottom of one side of the sliding seat 11, and the second convex block 16 is arranged opposite to the first convex block 12. After the product is switched in place, the sliding seat drives the second convex block to descend, so that the second convex block abuts against the connecting block and pushes the two unlocking rods to slide downward, thereby ejecting the elastic limit post out of the limit hole. Then, under the action of the restoring force of the second spring, the extrusion post quickly returns to its original position to complete unlocking of the product.

[0029] The specific working process of this embodiment is as follows: When hot extrusion processing is to be performed on metal powder (taking silver-tin powder as an example), the staff first adds a certain amount of metal powder into the lower die 3, and then starts the induction coil 22 for heating.

[0030] Then, the positive and negative servo motor 131 is started in the forward direction. The positive and negative servo motor 131 drives the incomplete bevel gear 134 to rotate with the first driven bevel gear 132 first, thereby driving the rotating shaft 6 to rotate and rotating a set of cover plate assemblies 9 above the heat preservation sleeve 21. At the same time, during the rotation process, the positioning post 83 rotates along the arc-shaped positioning groove 112 at the bottom of the sliding seat 11. When the cover plate assembly 9 rotates in place, the positioning post 83 slides to the end of the arc-shaped positioning groove 112 to prevent the cover plate assembly 9 from deviating due to inertia. Then, the incomplete bevel gear 134 disengages from the contact with the first driven bevel gear 132 and meshes with the second driven bevel gear 133, thereby driving the reciprocating lead screw 7 to rotate forward, so that the sliding seat 11 and the first convex block 12 gradually descend under the limiting action of the limiting rod 111 and contact the first limiting block 93, squeezing the first limiting block 93 and the first sliding column 92 to slide downward, thereby pushing the cover plate 91 and the upper die 10 to descend, so that the cover plate 91 covers the heat preservation sleeve 21 and the upper die 10 covers the lower die 3 (at this time, the sliding seat 11 slides to the bottom end of the reciprocating lead screw 7).

[0031] Then, high-pressure oxygen is injected into the heat-insulating sleeve 21 through the air inlet pipe 23. The high-pressure oxygen enters the mold through the extrusion port 101 and oxidizes the powder in the mold into silver tin oxide. After waiting for the heating temperature of the mold to reach the set value (a set of thermocouples are inserted into the side wall of the position where the lower mold 3 is close to the reduced-diameter port of the upper mold 10 to detect the temperature of the inner cavity of the mold), the electric cylinder 41 is started. The electric cylinder 41 pushes the extrusion gasket 42 and the L-shaped rod 44 to rise. The extrusion gasket 42 pushes the silver tin oxide powder to rise. After passing through the deformation of the inner conical surface of the upper mold 10, it is extruded from the extrusion port 101 to form a rod, and enters the guide pipe 102 which is gradually inserted. As the extrusion gasket 42 gradually rises, the material is evenly extruded until the extrusion gasket 42 rises to the docking position of the lower mold 3 and the upper mold 10 and then stops rising. At the same time, the first inclined surface of the L-shaped rod 44 gradually contacts the second inclined surface of the extrusion block 143, thereby pushing the extrusion column 142 to slide and gradually approach the extruded product until the product is locked and fixed. At this time, the elastic limit column 146 is inserted into the limit hole 145 to complete the hot extrusion processing of the metal powder.

[0032] Then, the forward and reverse servo motor 131 is started in reverse. The forward and reverse servo motor 131 drives the incomplete bevel gear 134 to rotate in reverse and first drives the second driven bevel gear 133 and the reciprocating lead screw 7 to rotate in reverse, so that the first convex block 12 is separated from the first limit block 93, and the sliding seat 11 rises to the top of the reciprocating lead screw 7. The cover plate assembly 9 slides upward under the restoring force of the first spring 94, so that the cover plate assembly 9 is separated from the heat-insulating sleeve 21. Then, the incomplete bevel gear 134 meshes with the first driven bevel gear 132 to drive the rotating shaft 6 and the cover plate assembly 9 to rotate, thereby realizing the switching of the cover plate assembly 9. The cover plate assembly 9 with the product is conveyed under the second convex block 16 (during the switching process of the cover plate assembly 9, the staff adds a fixed amount of metal powder into the lower mold 3). Then, the incomplete bevel gear 134 is continuously reversed, so that the sliding seat 11 continues to descend under the drive of the reciprocating lead screw 7 and presses the cover plate assembly 9 to realize the docking of the mold. Then, the forward and reverse servo motor 131 is turned off (at this time, the teeth of the incomplete bevel gear 134 are between the first driven bevel gear 132 and the second driven bevel gear 133); when the sliding seat 11 descends, it can also synchronously drive the second convex block 16 to descend and extrude the corresponding connecting block 151, so that the unlocking rod 15 descends and extrudes and unlocks the elastic limit column 146, while the extrusion column 142 returns to its original position under the restoring force of the second spring 144, releasing the locking of the extruded product, so that the product can be smoothly removed. After the product is smoothly removed, further processing is carried out on the rod, such as cutting processing, to cut into block-shaped contacts.

[0033] After the cover plate assembly 9 of this group is extruded, the forward and reverse servo motor 131 is started forward again, and the incomplete bevel gear 134 is meshed with the second driven bevel gear 133, driving the reciprocating screw 7 to rotate forward, thereby driving the sliding seat 11 to rise, and then the incomplete bevel gear 134 is meshed with the first driven bevel gear 132 to drive the rotating shaft 6 to rotate forward, and the cover plate assembly 9 with the product is transported to the bottom of the second protrusion 16, and then the incomplete bevel gear 134 continues to rotate forward, driving the sliding seat 11 to descend, and the mold docking and product unlocking operations are carried out, and this reciprocating operation is repeated to achieve uninterrupted and continuous extrusion of metal powder and improve production efficiency.

[0034] like Figure 8 As shown, in this embodiment, in order to facilitate the unloading of products, the locking assembly 14 can also be set to the following structure: The tops of the two fixed sleeves 141 are connected with mounting rods 147, and the mounting rods 147 are fixedly connected to the concave mounting seat 82 and slidably connected to the cover plate 91, and the fixed sleeves 141 are detachably connected to the top of the upper mold 10, and the remaining structures are consistent with the above embodiment.

[0035] The above structure allows the cover assembly 9 and the upper mold 10 to slide downward and cover the insulation sleeve 21 under the extrusion of the first protrusion 12. At this time, since the fixed sleeve 141 is fixed by the mounting rod 147, the height of the fixed sleeve 141 will not change (at this time, the fixed sleeve 141 is still within the spacing range between the feed pipe 102 and the top of the upper mold 10). During the extrusion process pushed by the electric cylinder 41, the L-shaped rod 44 is also pushed to slide synchronously, so that the L-shaped rod 44 gradually contacts the extrusion block 143 to lock the extruded product. After the extrusion is completed, the first protrusion 12 is separated from the contact with the first limit block 93, so that the cover assembly 9 rises. At this time, since the extruded product is locked by the locking assembly 14, a downward pulling force will be generated on the extruded product during the rising process of the cover assembly 9, so that the bottom part of the extruded product extends out of the bottom of the upper mold 10, so that when taking the material, the staff can have a force point to facilitate the removal of the product.

[0036] In the above embodiment, the action process of the forward and reverse servo motor 131 can be controlled by a preset program.

[0037] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An induction heating powder continuous hot extrusion device, characterized in that: The machine comprises a platform (1), wherein a heating and heat preservation component (2) having an opening at the top and a lower mold (3) are mounted on the top of the machine (1), wherein the height of the lower mold (3) is lower than that of the heating and heat preservation component (2) and is located in the inner cavity of the heating and heat preservation component (2), and an extrusion power component (4) inserted into the lower mold (3) is mounted on the bottom of the machine (1); A support frame (5) is installed on the top of the machine (1); a rotating shaft (6) and a reciprocating screw (7) are rotatably connected to the top of the support frame (5); the rotating shaft (6) passes through both ends of the reciprocating screw (7); a mounting frame (8) is symmetrically installed on the outer wall of the rotating shaft (6); a cover plate assembly (9) that cooperates with the heating and heat preservation assembly (2) is slidably installed on the mounting frame (8); an upper mold (10) is installed on the top of the inner cavity of the cover plate assembly (9) via a connecting column; a sliding seat (11) is threadedly connected to the outer wall of the reciprocating screw (7); a first bottom portion of one side of the sliding seat (11) is provided for pushing the cover plate assembly (9) downwards. A protrusion (12), a limit rod (111) is installed on the top of the support frame (5), and the limit rod (111) passes through the sliding seat (11), a driving assembly (13) is installed on the top of the support frame (5), and the driving assembly (13) comprises a forward and reverse servo motor (131), a first driven bevel gear (132) is installed on the outer wall of the rotating shaft (6), a second driven bevel gear (133) is installed on the outer wall of the reciprocating screw rod (7), and an incomplete bevel gear (134) is installed on the output shaft of the forward and reverse servo motor (131) and is meshed with the first driven bevel gear (132) and the second driven bevel gear (133) in sequence.

2. The induction heating powder continuous hot extrusion device according to claim 1 is characterized in that: The heating and heat-insulating component (2) comprises a heat-insulating sleeve (21), and the heat-insulating sleeve (21) is coaxially arranged with the lower mold (3), an inductor coil (22) is arranged around the inner wall of the heat-insulating sleeve (21), and an air inlet pipe (23) is connected between the heat-insulating sleeve (21) and the side wall.

3. The induction heating powder continuous hot extrusion device according to claim 2 is characterized in that: The cross-sectional shape of the inner wall of the upper mold (10) is conical, the top of the upper mold (10) is provided with an extrusion port (101), the top of the inner cavity of the cover plate assembly (9) is provided with a feed guide tube (102) that cooperates with the extrusion port (101), and a spacing is provided between the bottom of the feed guide tube (102) and the top of the upper mold (10).

4. The induction heating powder continuous hot extrusion device according to claim 3 is characterized in that: The inductor coil (22) is arranged at the diameter-changing opening of the upper mold (10).

5. The induction heating powder continuous hot extrusion device according to claim 1, characterized in that: The cover plate assembly (9) comprises a cover plate (91), a first sliding column (92) being mounted on the top of the cover plate (91), one end of the first sliding column (92) passing through the top of the mounting frame (8) and being mounted with a first limiting block (93) cooperating with the first protrusion (12), a first spring (94) being sleeved on the outer wall of the first sliding column (92), and the first spring (94) being located between the first limiting block (93) and the mounting frame (8).

6. The induction heating powder continuous hot extrusion device according to claim 5, characterized in that: The mounting frame (8) comprises a fixing rod (81) connected to the rotating shaft (6); one end of the fixing rod (81) away from the rotating shaft (6) is connected to a concave mounting seat (82) with an opening downward; one end of the first sliding column (92) passes through the top of the concave mounting seat (82); the concave mounting seat (82) is symmetrically provided with limiting grooves on two opposite side walls; and sliding blocks that cooperate with the limiting grooves are symmetrically fixedly connected to two opposite sides of the cover plate (91).

7. The induction heating powder continuous hot extrusion device according to claim 6, characterized in that: A positioning column (83) is fixedly connected to the top of the concave mounting seat (82), and an arc-shaped positioning groove (112) cooperating with the positioning column (83) is formed through the sliding seat (11).

8. The induction heating powder continuous hot extrusion device according to claim 1, characterized in that: The extrusion power member (4) comprises an electric cylinder (41), the telescopic end of the electric cylinder (41) is inserted into the interior of the lower mold (3) and connected to an extrusion gasket (42), and the extrusion gasket (42) is slidably connected to the inner wall of the lower mold (3), the electric cylinder (41) is mounted on the bottom of the table of the machine (1) through a fixing frame (43), and the telescopic end of the electric cylinder (41) is symmetrically fixed to the opposite side walls with L-shaped rods (44), and one end of the L-shaped rod (44) passes through the inner wall of the machine (1). The table top is located inside the heating and heat preservation component (2); the free end of the L-shaped rod (44) is provided with an inclined first slope; locking components (14) for locking the extruded material are symmetrically installed on two opposite sides of the top of the upper mold (10); the ends of the two locking components (14) that are away from each other extend out of the edge of the upper mold (10) and are provided with a second slope that cooperates with the first slope; when the first slope and the second slope are in contact and extruded, the two locking components (14) are pushed to slide and lock the extruded material.

9. The induction heating powder continuous hot extrusion device according to claim 8, characterized in that: The locking assembly (14) comprises a fixed sleeve (141) and an extrusion column (142), and the extrusion column (142) penetrates and slides in the inner cavity of the fixed sleeve (141), and the ends of the two extrusion columns (142) that are away from each other are symmetrically fixed with an extrusion block (143), and the extrusion block (143) is provided with a second inclined surface, and the outer wall of the extrusion column (142) is sleeved with a second spring (144), and the second spring (144) is located between the extrusion block (143) and the end of the fixed sleeve (141), and the top side wall of the fixed sleeve (141) is provided with a limiting hole (145), and the outer wall of the extrusion column (142) is fixed with an elastic limiting column (146) that cooperates with the limiting hole (145), and when the elastic limiting column (146) is inserted into the limiting hole (145), the two locking assemblies (14) lock the extruded material.

10. The induction heating powder continuous hot extrusion device according to claim 9, characterized in that: The top of the cover plate (91) is penetrated by two unlocking rods (15) that cooperate with the two limiting holes (145) and are slidably connected thereto. The tops of the two unlocking rods (15) pass through the mounting frame (8) and are connected to a connecting block (151). A second protrusion (16) is provided at the bottom of one side of the sliding seat (11), and the second protrusion (16) is arranged opposite to the first protrusion (12).

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