Lithium ribbon extruder die mechanism

Abstract

The present application relates to lithium strip forming technology field, specifically to a kind of lithium strip extruding machine die mechanism, a kind of lithium strip extruding machine die mechanism, comprising: base, horizontally set on ground, the first end of base is fixedly connected with front die holder, the tail end of base is fixedly connected with rear die holder;Guide shaft, four are provided, and the tail end of four guide shafts is fixedly connected between front die holder and rear die holder along x-axis direction respectively;Locking beam, slidingly connected on four guide shafts, movable die beam, slidingly connected on four guide shafts, extrusion power assembly, fixedly connected on rear die holder, die changing assembly, horizontally set on ground, traction assembly, fixedly connected in front die holder, hydraulic station, horizontally set on ground, control assembly, set on front die holder, the present application is cooperated by extrusion power assembly, die changing assembly, traction assembly etc. Whole, realize lithium strip forming flow optimization, it is convenient to replace mould, realize machine traction lithium strip and other functions, good reliability.

Description

Technical Field

[0001] This invention relates to the field of lithium strip forming technology, and more particularly to a die mechanism for a lithium strip extrusion press. Background Technology

[0002] Lithium strip is a specific form of metallic lithium product. It is a strip-shaped material made of high-purity metallic lithium through mechanical processing. Lithium strip has a wide range of applications, mainly including lithium batteries, electronic devices and energy storage. Among them, ultra-thin lithium strip, as a negative electrode material, can improve the energy density and range of batteries and is widely used in electric vehicles and portable electronic devices.

[0003] The lithium strip calendering machine in Publication No. CN221231297U uses a method of forming lithium strip by calendering metallic lithium into lithium strip using rolls. However, when the lithium strip initially bites into the rolls, the rolling force suddenly increases from zero to the set value. Due to the characteristics of its own roll pressing mechanism, the formed lithium strip head forms a wedge-shaped thickened area (i.e., an arc-shaped head), which does not meet the specifications. The production method of ultra-wide metallic lithium strip in Publication No. CN106914503B introduces a method of forming lithium strip by extruding it through a die. However, the extruded lithium strip still needs a traction device to pull the lithium strip for the next step, such as winding. If there is no traction device, manual traction will increase labor costs and traction instability. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a die mechanism for a lithium strip extrusion press to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides a lithium strip extrusion die mechanism, comprising:

[0006] The base is horizontally set on the ground. A front mold base is fixedly connected to the upper part of the front end of the base, and a rear mold base is fixedly connected to the upper part of the rear end of the base.

[0007] Four guide shafts are provided, and the four guide shafts are distributed in a rectangular shape. The two ends of the four guide shafts are fixedly connected between the front mold base and the rear mold base along the x-axis, respectively.

[0008] A locking beam is slidably connected to the four guide shafts and located between the front mold base and the rear mold base. A transfer seat is detachably connected to the center of the locking beam.

[0009] The moving mold beam is slidably connected to the four guide shafts and is located between the front mold base and the rear mold base;

[0010] The extrusion power assembly is fixedly connected to the rear die base and is drively connected to the clamping beam and the moving die beam. The moving die beam is fixedly connected to the extrusion power assembly.

[0011] A mold changing assembly is horizontally set on the ground. An extrusion mold is detachably connected to the mold changing assembly, and the extrusion mold communicates with the transfer seat.

[0012] The traction assembly is fixedly connected inside the front die holder and communicates with the extrusion die;

[0013] A hydraulic station is horizontally installed on the ground. The hydraulic station is connected to multiple hydraulic pipelines, which are connected to the extrusion power assembly, the die changing assembly, and the feeding assembly.

[0014] The control assembly is mounted on the front mold base and is electrically connected to the hydraulic station, the feeding assembly, and the traction assembly.

[0015] As an optional implementation, the extrusion power assembly includes an extrusion cylinder. The outer end of the extrusion cylinder is fixedly connected to the center of the rear die base. The outer end of the piston rod of the extrusion cylinder is fixedly connected to the moving die beam. An extrusion head is fixedly connected to the head of the piston rod of the extrusion cylinder. Two closed cylinders are fixedly connected to the rear die base in a mirror-symmetrical manner in the z-axis direction relative to the axis of the extrusion cylinder. The piston heads of the two closed cylinders are fixedly connected to the side of the locking beam facing the moving die beam.

[0016] As an optional implementation, both the guide shaft and the closed cylinder are fitted with corrugated telescopic rubber sleeves.

[0017] As an optional implementation, the mold changing assembly includes a guide bracket fixedly connected to the rear mold base. The extrusion mold is slidably connected to the guide bracket along the y-axis. A cylinder bracket is also fixedly connected to one side of the rear mold base. A push-pull cylinder is rotatably connected to the cylinder bracket with the z-axis as the rotation axis. The telescopic section of the push-pull cylinder is detachably connected to the extrusion mold. The mold changing assembly also includes a mold changing frame horizontally set on the ground. A mold placement platform is slidably connected to the top of the mold changing frame along the z-axis. A top extension cylinder is fixedly connected to the mold changing frame. The telescopic end of the top extension cylinder is fixedly connected to the mold placement platform. The oil circuits of the push-pull cylinder and the top extension cylinder are connected to the oil circuit of the hydraulic station.

[0018] As an optional implementation, the transfer seat has an extrusion chamber inside, and a vacuum groove is provided in the extrusion chamber facing the moving mold beam. A vacuum hole is provided in the vacuum groove, and a vacuum pipe is connected to the vacuum hole. A vacuum pump is connected to the vacuum pipe, and a vacuum gauge is also connected to the vacuum pipe. The vacuum pump is electrically connected to the control assembly. A conical guide port is provided on the other side of the extrusion chamber, and the conical guide port fits against the extrusion die. The extrusion die includes a die pad, and the die pad slides... The mold pad is movably connected within the guide bracket. The upper and lower ends of the mold pad are detachably connected to the upper mold and the lower mold, respectively. A strip-shaped gap is left between the upper mold and the lower mold. The upper mold and the lower mold have symmetrical designs and are both trapezoidal. The acute angles of the upper mold and the lower mold correspond to the conical guide port. The distance between the inclined sides of the upper mold and the lower mold increases along the x-axis toward the traction assembly. One end of the mold pad communicates with the cavity between the upper mold and the lower mold through a waist-shaped through hole. A guide plate is fixedly connected to the waist-shaped through hole.

[0019] As an optional implementation, the traction assembly includes a traction frame, with two running frames fixedly connected to both sides of the traction frame in a mirror-symmetrical manner. Each running frame has a guide rail in its middle, and a slider is slidably connected to each guide rail. A drive shaft is rotatably connected to the upper and lower ends of each slider. The diameter of the outer end of the middle of the drive shaft is smaller than the diameter of the outer ends of the two ends of the drive shaft. A drive gear is driven to both ends of each drive shaft. An annular protrusion extends outward from one side of each drive gear. A first one-way bearing is disposed inside the annular protrusion of each drive gear. The inner end of the first one-way bearing is fixedly connected to the outer side of the annular protrusion of the drive gear. A conveying roller is fitted onto the outer ends of every two opposing first one-way bearings. The inner ends of the conveying roller are fixedly connected to the outer ends of the corresponding one-way bearings. The radial cross-section of the conveying roller has... The guide plate has two arc-shaped protrusions with different heights and a passage area with the smallest diameter and no fluctuation. The end of the guide plate faces the conveying roller. A motor bracket is fixedly connected to the outside of one of the sliders. A drive motor is fixedly connected to the motor bracket. The main shaft of the drive motor is connected to the transmission shaft at the upper end. Two transmission gears on the same side mesh with each other. A second one-way bearing is fixedly connected to the outer ends of the transmission shaft at the upper end. A rubber wheel is fixedly connected to the outer end of each second one-way bearing. A linear motion bar is fixedly connected to the lower top of each running frame. The linear motion bar includes a rack that meshes with the transmission gear and a protrusion that is fixedly connected to it. When the rubber wheel contacts the protrusion, the transmission gear disengages from the rack. When the rubber wheel leaves the protrusion, the transmission gear contacts the rack.

[0020] As an optional implementation, the control assembly includes a boom fixedly connected to the front mold base, and a control box fixedly connected to the end of the boom, wherein a controller is disposed in the control box.

[0021] Furthermore, a ranging bracket is fixedly connected to the top of the front mold base and the rear mold base, and a displacement sensor is provided on the ranging bracket. The displacement sensor is electrically connected to the controller.

[0022] As an optional implementation, the hydraulic station includes an oil tank with a heater at the bottom, the heater being connected to the oil circuit of the hydraulic station. The hydraulic station also includes an oil cooler, which is connected to the oil circuit of the hydraulic station. The hydraulic station is located outdoors.

[0023] As an optional implementation, two linear guide rails are fixedly connected to the bottom ends of the base in a mirror image, and the two linear guide rails are slidably connected to the locking beam and the moving beam.

[0024] The beneficial effects of the present invention are as follows: The present invention achieves optimized flow in lithium strip forming by the overall coordination of the extrusion power assembly, the mold changing assembly, and the traction assembly, which facilitates mold replacement and enables functions such as machine traction of lithium strip. Compared with traditional lithium strip machines, it has better reliability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view diagram of an embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0028] Figure 3 This is a side view of an embodiment of the present invention;

[0029] Figure 4 This is an embodiment of the present invention. Figure 3 Isometric side sectional view at point AA;

[0030] Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged view of section B;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of a portion of an embodiment of the present invention. Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of a portion of an embodiment of the present invention. Figure 2 ;

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of the traction assembly in an embodiment of the present invention. Figure 1 ;

[0034] Figure 9 This is a schematic diagram of the three-dimensional structure of the traction assembly in an embodiment of the present invention. Figure 2 ;

[0035] Figure 10 This is an embodiment of the present invention. Figure 9 Enlarged view of a portion of point C in the middle;

[0036] Figure 11 The internal structure of the traction assembly in an embodiment of the present invention Figure 1 ;

[0037] Figure 12 The internal structure of the traction assembly in an embodiment of the present invention Figure 2 .

[0038] The diagram is marked as follows:

[0039] 1. Base; 11. Front die holder; 12. Rear die holder; 13. Guide shaft; 14. Locking beam; 15. Transfer seat; 16. Moving die beam; 17. Linear guide rail; 2. Extrusion power assembly; 21. Extrusion cylinder; 22. Extrusion head; 23. Sealing cylinder; 3. Die changing assembly; 31. Extrusion die; 32. Guide bracket; 33. Cylinder bracket; 34. Push-pull cylinder; 35. Die changing frame; 36. Die placement platform; 361. Ejection cylinder; 37. Extrusion chamber; 371. Vacuum tank; 372. Vacuum hole; 373. Vacuum tube; 374. Vacuum gauge; 375. Conical guide port; 38. Die pad; 381. Upper die; 382. 4. Lower mold; 383. Waist-shaped through hole; 384. Guide plate; 4. Traction assembly; 41. Traction frame; 411. Running frame; 412. Guide slide rail; 42. Slider; 43. Drive shaft; 431. Drive gear; 432. First one-way bearing; 433. Second one-way bearing; 44. Conveyor roller; 441. Through area; 45. Motor bracket; 451. Drive motor; 46. Rubber wheel; 47. Linear motion bar; 471. Rack; 472. Protrusion; 5. Hydraulic station; 51. Oil tank; 52. Heater; 53. Oil cooler; 6. Control assembly; 61. Hoist; 62. Control box; 63. Distance measuring bracket; 64. Displacement sensor. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0041] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] like Figures 1-12 As shown, a lithium strip extrusion die 31 mechanism includes:

[0043] The base 1 is horizontally set on the ground. A front mold base 11 is fixedly connected to the upper part of the front end of the base 1, and a rear mold base 12 is fixedly connected to the upper part of the rear end of the base 1.

[0044] Four guide shafts 13 are provided, and the four guide shafts 13 are arranged in a rectangular shape. The two ends of the four guide shafts 13 are fixedly connected between the front mold base 11 and the rear mold base 12 along the x-axis, respectively.

[0045] The mold-locking beam 14 is slidably connected to the four guide shafts 13 and located between the front mold base 11 and the rear mold base 12. The center of the mold-locking beam 14 is detachably connected to the central pivot 15.

[0046] The moving mold beam 16 is slidably connected to the four guide shafts 13 and is located between the front mold base 11 and the rear mold base 12;

[0047] The extrusion power assembly 2 is fixedly connected to the rear die base 12 and is drively connected to the locking die beam 14 and the moving die beam 16. The moving die beam 16 is fixedly connected to the extrusion power assembly 2.

[0048] The mold changing assembly 3 is horizontally set on the ground. An extrusion mold 31 is detachably connected to the mold changing assembly 3. The extrusion mold 31 communicates with the transfer seat 15.

[0049] The traction assembly 4 is fixedly connected inside the front mold base 11 and communicates with the extrusion mold 31;

[0050] Hydraulic station 5 is horizontally set on the ground. Hydraulic station 5 is connected to multiple hydraulic pipes. The multiple hydraulic pipes are connected to the extrusion power assembly 2, the mold changing assembly 3 and the feeding assembly.

[0051] The control assembly 6 is mounted on the front mold base 11 and is electrically connected to the hydraulic station 5, the feeding assembly, and the traction assembly 4.

[0052] As an optional implementation method, such as Figure 2 As shown, the extrusion power assembly 2 includes an extrusion cylinder 21. The outer end of the extrusion cylinder 21 is fixedly connected to the center of the rear die base 12. The outer end of the piston rod of the extrusion cylinder 21 is fixedly connected to the moving die beam 16. An extrusion head 22 is fixedly connected to the head of the piston rod of the extrusion cylinder 21. Two closed cylinders 23 are fixedly connected to the rear die base 12 in a mirror-symmetrical manner in the z-axis direction relative to the axis of the extrusion cylinder 21. The piston heads of the two closed cylinders 23 are fixedly connected to the side of the locking beam 14 facing the moving die beam 16.

[0053] Thus, the moving mold beam 16 is horizontally guided by four guide shafts 13, and the outer end of the piston rod of the extrusion cylinder 21 is fixedly connected to the moving mold beam 16, ensuring the weight support of the piston rod of the extrusion cylinder 21 and ensuring the coaxiality between the piston rod of the extrusion cylinder 21 and the central rotating seat 15. The two closed cylinders 23 provide the movement capability of the locking mold beam 14 in the x-axis direction, so that when producing lithium strip, the locking mold beam 14 makes the central rotating seat 15 closely adhere to the upper mold 381 and the lower mold 382. When cleaning the extrusion cavity 37 or changing the mold, the two closed cylinders 23 are driven to retract, so that the locking mold beam 14 moves away from the upper mold 381 and the lower mold 382.

[0054] As an optional implementation method, such as Figure 2 As shown, corrugated telescopic rubber sleeves are fitted on both the guide shaft 13 and the closed oil cylinder 23;

[0055] In this way, the corrugated telescopic sleeve can provide dust protection for the four guide shafts 13 and the closed cylinder 23 without affecting the operation of the equipment. On the other hand, when the lithium metal is loaded into the extrusion chamber 37 by lifting, if the lithium metal accidentally collides with the four guide shafts 13 and the closed cylinder 23, it can also reduce the damage to both.

[0056] As an optional implementation method, such as Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, the mold changing assembly 3 includes a guide bracket 32 ​​fixedly connected to the rear mold base 12. The extrusion mold 31 is slidably connected to the guide bracket 32 ​​along the y-axis. A cylinder bracket 33 is also fixedly connected to one side of the rear mold base 12. A push-pull cylinder 34 is rotatably connected to the cylinder bracket 33 with the z-axis as the rotation axis. The telescopic section of the push-pull cylinder 34 is detachably connected to the extrusion mold 31. The mold changing assembly 3 also includes a mold changing frame 35 horizontally set on the ground. A mold placement platform 36 is slidably connected to the top of the mold changing frame 35 along the z-axis. A top extension cylinder 361 is fixedly connected to the mold changing frame 35. The telescopic end of the top extension cylinder 361 is fixedly connected to the mold placement platform 36. The oil circuits of the push-pull cylinder 34 and the top extension cylinder 361 are connected to the oil circuit of the hydraulic station 5.

[0057] Therefore, producing lithium strips of different specifications requires changing molds of different specifications. The metal molds are heavy, and the equipment itself has structural limitations. Changing molds requires workers to be inside the equipment, which is not only inefficient but also dangerous in the confined space, making it difficult to avoid accidents. Therefore, a mold changing assembly 3 is designed. The extrusion mold 31 slides along the y-axis in the guide bracket 32 ​​by the extension and retraction of the push-pull cylinder 34. After the position is adjusted, the extrusion mold 31 can be fixed. The push-pull cylinder 34, which is rotatably connected to the cylinder bracket 33, can be disengaged from the extrusion mold 31 after the mold changing is completed, and rotates from the y-axis direction to the x-axis direction, reducing space occupation. During mold changing, the mold to be replaced is moved to one side by the push-pull cylinder 34 and placed on the mold placement platform 36 before being moved away. The mold to be installed can also be adjusted by the extension and retraction of the top extension cylinder 361 to adjust the height of the mold placement platform 36 from the ground. This, along with the installation of the guide bracket 32 ​​and the extension and retraction of the push-pull cylinder 34, assists in the entire mold changing process.

[0058] As an optional implementation method, such as Figure 5As shown, the transfer seat 15 has an extrusion chamber 37 inside. A vacuum groove 371 is provided inside the extrusion chamber 37 facing the moving mold beam 16. A vacuum hole 372 is provided inside the vacuum groove 371. A vacuum tube 373 is connected to the vacuum hole 372, and a vacuum pump is connected to the vacuum tube 373. A vacuum gauge 374 is also connected to the vacuum tube 373. The vacuum pump is electrically connected to the control assembly 6. A conical guide port 375 is provided on the other side of the extrusion chamber 37. The conical guide port 375 fits against the extrusion mold 31. The extrusion mold 31 includes a mold pad 38, which is slidably connected to the guide port 374. Inside the bracket 32, the upper mold 38 is detachably connected to the upper mold 381 and the lower mold 382 at its upper and lower ends, respectively. A strip-shaped gap is left between the upper mold 381 and the lower mold 382. The upper mold 381 and the lower mold 382 are symmetrically designed and are both trapezoidal. The acute angles of the upper mold 381 and the lower mold 382 correspond to the conical guide port 375. The distance between the inclined sides of the upper mold 381 and the lower mold 382 increases along the x-axis toward the traction assembly 4. One end of the head of the mold pad 38 communicates with the cavity between the upper mold 381 and the lower mold 382 through a waist-shaped through hole 383. A guide plate 384 is fixedly connected to the waist-shaped through hole 383.

[0059] Thus, there is a small gap between the extrusion head 22 and the extrusion chamber 37. After the lithium metal is placed in the extrusion chamber 37, the extrusion head 22 will penetrate into the extrusion chamber 37, but will not directly submerge the vacuum groove 371. At this time, the extrusion chamber 37 is evacuated to maintain a negative pressure state. Then the extrusion head 22 submerges the vacuum groove 371 to extrude and form the lithium metal. The design of the conical guide port 375 allows the compressed lithium metal to flow more smoothly and stably between the upper die 381 and the lower die 382 to produce lithium strip. The upper die 381 and the lower die 382 are both trapezoidal structures, that is, the pressure point is two acute angles, which have less contact with the lithium metal and are less likely to stick. The guide plate 384 keeps the compressed lithium strip in direction and in contact with the traction assembly 4.

[0060] As an optional implementation method, such as Figure 1 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the traction assembly 4 includes a traction frame 41. Two running frames 411 are fixedly connected to both sides of the traction frame 41 in a mirror-symmetrical manner. Each running frame 411 has a guide rail 412 in its middle. A slider 42 is slidably connected to each guide rail 412. A drive shaft 43 is rotatably connected to the upper and lower ends of each slider 42. The diameter of the outer end of the middle section of the drive shaft 43 is smaller than the diameter of the outer ends of both ends of the drive shaft 43. A drive gear 431 is drively connected to both ends of each drive shaft 43. One side of the drive gear 431 has an outwardly extending annular protrusion. A first one-way bearing 432 is disposed inside the inner side of each outwardly extending annular protrusion of the drive gear 431. The inner end of the first one-way bearing 432 is fixedly connected to the outer side of the outwardly extending annular protrusion of the drive gear 431. A conveying roller 44 is fitted onto the outer ends of every two opposing first one-way bearings 432. The two inner ends of the conveying roller 44 are fixedly connected to the outer ends of the corresponding one-way bearings. The radial section of the conveying roller 44 has two arc-shaped protrusions with different heights. And a passage zone 441 with the smallest diameter and no fluctuation, the end of the guide plate 384 faces the conveying roller 44, a motor bracket 45 is fixedly connected to the outside of one of the sliders 42, a drive motor 451 is fixedly connected to the motor bracket 45, the main shaft of the drive motor 451 is connected to the transmission shaft 43 at the upper end, two transmission gears 431 on the same side mesh with each other, and a second one-way bearing 433 is fixedly connected to the outer ends of the transmission shaft 43 at the upper end. Each of the second one-way bearings 433 has a rubber wheel 46 fixedly connected to its outer end. Each of the running frames 411 has a linear motion bar 47 fixedly connected to its top lower side. The linear motion bar 47 includes a rack 471 that meshes with the transmission gear 431 and a protrusion 472 that is fixedly connected to it. When the rubber wheel 46 contacts the protrusion 472, the transmission gear 431 disengages from the rack 471. When the rubber wheel 46 leaves the protrusion 472, the transmission gear 431 contacts the rack 471.

[0061] Thus, when the passage areas 441 of the two conveying rollers 44 are opposite, a gap is left between the two conveying rollers 44 for the lithium strip to pass through. When the lithium strip is located between the conveying rollers 44, the main shaft of the drive motor 451 can rotate forward, causing the two meshing transmission gears 431 to rotate, thereby causing the two opposing arc-shaped protrusions to clamp the lithium strip. Multiple different arc-shaped protrusions can accommodate lithium strips with different gaps. During clamping, the transmission gears 431 disengage from the rack 471, and the rubber wheel 46 contacts the protrusion 472. The limiting directions of the first one-way bearing 432 and the second one-way bearing 433 are opposite. The functions of the first one-way bearing 432 and the second one-way bearing 433 are as follows: When the conveyor roller 44 is rotating and clamping, the rubber wheel 46 does not rotate while the conveyor roller 44 can rotate, so that the slider 42 itself does not move. After clamping is completed, the lithium strip is pulled. At this time, the main shaft of the drive motor 451 reverses, causing the rubber wheel 46 to drive the slider 42 to move. In the latter part, the transmission gear 431 drives the slider 42 to move when it is engaged with the rack 471, so that the lithium strip is brought out while being clamped. The clamping and moving states do not interfere with each other. After the lithium strip is conveyed, the slider 42 moves a certain distance towards the extrusion chamber 37. At the same time, the conveyor roller 44 will also loosen the clamping of the lithium strip due to rotating a certain angle, which facilitates further operation of the extended lithium strip.

[0062] As an optional implementation method, such as Figure 1 and 2 As shown, the control assembly 6 includes a rod 61 fixedly connected to the front mold base 11, and a control box 62 fixedly connected to the end of the rod 61. A controller is provided inside the control box 62.

[0063] In this way, the overall control of the equipment can be achieved, such as adjusting the pressure required for different lithium strip products.

[0064] Furthermore, such as Figure 2 As shown, a ranging bracket 63 is also fixedly connected to the top of the front mold base 11 and the rear mold base 12. A displacement sensor 64 is provided on the ranging bracket 63, and the displacement sensor 64 is electrically connected to the controller.

[0065] Thus, the displacement sensor 64 is used to sense the precise extension and retraction of the compression cylinder 21.

[0066] As an optional implementation method, such as Figure 2 As shown, the hydraulic station 5 includes an oil tank 51, a heater 52 is provided at the bottom of the oil tank 51, the heater 52 is connected to the oil circuit of the hydraulic station 5, the hydraulic station 5 also includes an oil cooler 53, the oil cooler 53 is connected to the oil circuit of the hydraulic station 5, and the hydraulic station 5 is located outdoors;

[0067] Thus, under normal circumstances, the hydraulic oil in hydraulic station 5 tends to have lower viscosity and reduced pressure stability in the summer high temperature, while the hydraulic oil tends to have higher viscosity in the winter low temperature, which slows down the response of the entire hydraulic system, reduces fluidity, and increases the load on the oil pump.

[0068] As an optional implementation method, such as Figure 2 As shown, two linear guide rails 17 are fixedly connected to the bottom ends of the base 1 in a mirror image, and the two linear guide rails 17 are slidably connected to the locking beam 14 and the moving beam 16;

[0069] Thus, after the lithium strip is extruded, there will be residual metallic lithium in the extrusion head 22 due to the small gap between it and the extrusion chamber 37. The residual metallic lithium will not be evenly distributed. In order to reduce the wear between the extrusion head 22 and the extrusion chamber 37, it is necessary to ensure the accuracy of the axial movement of the moving mold beam 16 and the locking mold beam 14x.

[0070] In this embodiment, the operator places high-purity lithium metal in a state awaiting processing into the extrusion chamber 37. The extrusion head 22 in the extrusion power assembly 2 is used to extrude the lithium metal by controlling the assembly 6. The lithium metal flows in from the conical guide port 375 under pressure and flows out from the strip-shaped gap between the upper die 381 and the lower die 382 to form a lithium strip. The extruded lithium strip reaches the front of the traction assembly 4 through the guide plate 384. Finally, the traction assembly 4 clamps the lithium strip and transports it.

[0071] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A lithium strip extrusion die mechanism, characterized in that, include: The base (1) is horizontally set on the ground. A front mold base (11) is fixedly connected to the top of the front end of the base (1), and a rear mold base (12) is fixedly connected to the top of the rear end of the base (1). Four guide shafts (13) are provided. The four guide shafts (13) are arranged in a rectangular shape. The two ends of the four guide shafts (13) are fixedly connected between the front mold base (11) and the rear mold base (12) along the x-axis, respectively. The locking beam (14) is slidably connected to the four guide shafts (13) and located between the front mold base (11) and the rear mold base (12). The locking beam (14) is detachably connected to a central pivot (15). The moving mold beam (16) is slidably connected to the four guide shafts (13) and located between the front mold base (11) and the rear mold base (12); The extrusion power assembly (2) is fixedly connected to the rear die base (12) and is connected to the locking die beam (14) and the moving die beam (16) in a transmission manner. The moving die beam (16) is fixedly connected to the extrusion power assembly (2). The mold changing assembly (3) is horizontally set on the ground. The mold changing assembly (3) is detachably connected to the extrusion mold (31), and the extrusion mold (31) is connected to the transfer seat (15). The traction assembly (4) is fixedly connected inside the front mold base (11) and communicates with the extrusion mold (31); The hydraulic station (5) is horizontally set on the ground. The hydraulic station (5) is connected to multiple hydraulic pipes. The multiple hydraulic pipes are connected to the extrusion power assembly (2), the mold changing assembly (3) and the feeding assembly. The control assembly (6) is mounted on the front mold base (11) and is electrically connected to the hydraulic station (5), the loading assembly and the traction assembly (4); The mold changing assembly (3) includes a guide bracket (32) fixedly connected to the rear mold base (12), the extrusion mold (31) is slidably connected to the guide bracket (32) along the y-axis, and a cylinder bracket (33) is fixedly connected to one side of the rear mold base (12). A push-pull cylinder (34) is rotatably connected to the cylinder bracket (33) with the z-axis as the rotation axis. The extension section of the push-pull cylinder (34) is detachably connected to the extrusion mold (31). The mold changing assembly (3) also includes a mold changing frame (35) horizontally set on the ground. A mold placement platform (36) is slidably connected to the top of the mold changing frame (35) along the z-axis. A top extension cylinder (361) is fixedly connected to the mold changing frame (35). The extension end of the top extension cylinder (361) is fixedly connected to the mold placement platform (36). The oil circuits of the push-pull cylinder (34) and the top extension cylinder (361) are connected to the oil circuit of the hydraulic station (5). The transfer seat (15) is provided with an extrusion chamber (37). A vacuum groove (371) is provided in the extrusion chamber (37) facing the moving mold beam (16). A vacuum hole (372) is provided in the vacuum groove (371). A vacuum tube (373) is connected to the vacuum hole (372). A vacuum pump is connected to the vacuum tube (373). A vacuum gauge (374) is also connected to the vacuum tube (373). The vacuum pump is electrically connected to the control assembly (6). A conical guide port (375) is provided on the other side of the extrusion chamber (37). The conical guide port (375) is in contact with the extrusion mold (31). The extrusion mold (31) includes a mold pad (38). The mold pad (38) is slidably connected to the guide support. Inside the frame (32), the upper mold (38) and the lower mold (382) are detachably connected at the upper and lower ends of the mold pad (38). There is a strip gap between the upper mold (381) and the lower mold (382). The upper mold (381) and the lower mold (382) have symmetrical external structures and are both trapezoidal. The acute angles of the upper mold (381) and the lower mold (382) correspond to the conical guide port (375). The distance between the inclined sides of the upper mold (381) and the lower mold (382) along the x-axis toward the traction assembly (4) increases accordingly. One end of the head of the mold pad (38) communicates with the cavity between the upper mold (381) and the lower mold (382) through a waist-shaped through hole (383). A guide plate (384) is fixedly connected to the waist-shaped through hole (383). The traction assembly (4) includes a traction frame (41). Two running frames (411) are fixedly connected to both sides of the traction frame (41) in a mirror-symmetrical manner. Each running frame (411) has a guide rail (412) in the middle. A slider (42) is slidably connected to each guide rail (412). A drive shaft (43) is rotatably connected to the upper and lower ends of the side of each slider (42). The diameter of the outer circle end of the middle part of the drive shaft (43) is smaller than the diameter of the outer circle ends of the two ends of the drive shaft (43). A drive gear (431) is drivenly connected to both ends of each drive shaft (43). One side of the drive gear (431) has an outwardly extending annular protrusion. Each drive gear (431) has a first one-way bearing (432) on the inner side of the outwardly extending annular protrusion. The inner end of the first one-way bearing (432) is fixedly connected to the outer side of the outwardly extending annular protrusion of the drive gear (431). A conveying roller (44) is sleeved on the outer end of every two opposing first one-way bearings (432). The two inner ends of the conveying roller (44) are fixedly connected to the outer ends of the corresponding one-way bearings. The radial section of the conveying roller (44) has two arc-shaped protrusions with different protrusion heights and a section of circular diameter. A minimal and stable passage zone (441) is provided, with the end of the guide plate (384) facing the conveyor roller (44). A motor bracket (45) is fixedly connected to the outside of one of the sliders (42), and a drive motor (451) is fixedly connected to the motor bracket (45). The main shaft of the drive motor (451) is connected to the transmission shaft (43) located at the upper end. Two transmission gears (431) located on the same side mesh with each other. A second one-way bearing (433) is fixedly connected to the outer ends of the transmission shaft (43) located at the upper end. Each second one-way bearing... A rubber wheel (46) is fixedly connected to the outer end of each bearing (433). A linear motion bar (47) is fixedly connected to the lower top of each running frame (411). The linear motion bar (47) includes a rack (471) that meshes with the transmission gear (431) and a protrusion (472) that is fixedly connected to it. When the rubber wheel (46) contacts the protrusion (472), the transmission gear (431) disengages from the rack (471). When the rubber wheel (46) leaves the protrusion (472), the transmission gear (431) contacts the rack (471).

2. The lithium strip extrusion die mechanism according to claim 1, characterized in that, The extrusion power assembly (2) includes an extrusion cylinder (21). The outer end of the extrusion cylinder (21) is fixedly connected to the center of the rear die base (12). The outer end of the piston rod of the extrusion cylinder (21) is fixedly connected to the moving die beam (16). An extrusion head (22) is fixedly connected to the piston rod head of the extrusion cylinder (21). Two closed cylinders (23) are fixedly connected to the rear die base (12) in a mirror-symmetrical manner in the z-axis direction relative to the axis of the extrusion cylinder (21). The piston heads of the two closed cylinders (23) are fixedly connected to the side of the locking beam (14) facing the moving die beam (16).

3. The lithium strip extrusion die mechanism according to claim 1, characterized in that, Both the guide shaft (13) and the closed cylinder (23) are fitted with corrugated telescopic rubber sleeves.

4. The lithium strip extrusion die mechanism according to claim 1, characterized in that, The control assembly (6) includes a boom (61) fixedly connected to the front mold base (11), and a control box (62) is fixedly connected to the end of the boom (61). A controller is provided inside the control box (62).

5. The lithium strip extrusion die mechanism according to claim 1, characterized in that, The front mold base (11) and the rear mold base (12) are also fixedly connected to a ranging bracket (63), and a displacement sensor (64) is provided on the ranging bracket (63). The displacement sensor (64) is electrically connected to the controller.

6. The lithium strip extrusion die mechanism according to claim 1, characterized in that, The hydraulic station (5) includes an oil tank (51), and a heater (52) is provided at the bottom of the oil tank (51). The heater (52) is connected to the oil circuit of the hydraulic station (5). The hydraulic station (5) also includes an oil cooler (53), which is connected to the oil circuit of the hydraulic station (5). The hydraulic station (5) is located outdoors.

7. The lithium strip extrusion die mechanism according to claim 1, characterized in that, The base (1) has two linear guide rails (17) fixedly connected to its bottom ends in a mirror image. The two linear guide rails (17) are slidably connected to the locking beam (14) and the moving beam (16).

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