Tin bar rapid forming device integrated with ice-making cooling module

Abstract

The invention relates to the technical field of metal casting, in particular to a tin bar rapid forming device integrated with an ice-making cooling module, which comprises a rack, a mold body fixedly mounted on the rack is internally provided with a cavity, and a discharging assembly and a die-casting assembly are respectively mounted on the rack corresponding to the bottom and the top of the cavity in a sealing manner; a material melting kettle with the volume larger than the total volume of the cavities is installed on the machine frame corresponding to the die-casting assembly, the material melting kettle is communicated with the cavities through the die-casting assembly, and a first ice-making cooling module and a first ice-making cooling module are installed on the material melting kettle and the die body respectively. The die-casting assembly moves up and down, air in the cavity can be discharged before casting, the pressure in the cavity can be increased during casting, and the problems that casting is uneven and product defects are caused due to the fact that molten tin materials only depend on self weight and are poor in flowability are effectively solved; in addition, the die-casting assembly can complete feeding and discharging in the up-down moving process, high-efficiency forming machining is achieved, and the quality of formed products and the production efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal casting, in particular to a tin bar rapid forming device integrated with an ice-making cooling module. BACKGROUND

[0002] At present, with the rapid development of electronic information industry, electronic components are accelerating iteration towards high density and miniaturization. Especially in the fields of chip packaging, micro-electro-mechanical systems in aerospace, automobiles, high-speed rails and other frontiers, the pitch of solder joints is continuously reduced, and the precision and reliability of soldering materials are almost rigorously required. Environment-friendly lead-free solder has become the mainstream choice for electronic component welding, but its production technology has encountered many difficult problems, especially the serious deficiencies in forming quality and production efficiency exposed by traditional tin bar forming devices, which have become a major obstacle to the development of the industry.

[0003] At present, the traditional tin bar forming device adopts open casting forming in the production process, and only uses the gravity flow of the molten tin itself to the cavity.

[0004] When open casting, the molten tin directly contacts with air, and a large amount of air is easily involved in the flow process, not only easy to form pores and reduce the mechanical properties of the tin bar, but also the surface of the molten tin is easy to oxidize and form an oxide film, resulting in the problems of tin bar surface pitting, mottling or uneven color; at the same time, dust and impurities in the air are also easy to mix into the molten material, forming inclusion defects and affecting the purity of the tin bar.

[0005] Only relying on the gravity flow of the molten tin itself to the cavity, it is difficult to provide enough pressure to push the tin to completely fill, and easy to appear "lack of meat", "shrinkage" and other problems. At the same time, when the tin cools and shrinks, there is a lack of feeding pressure, which will further aggravate the size deviation, thereby reducing the quality of the tin bar.

[0006] In addition, the speed of gravity flow is low, which leads to a long time-consuming filling process. At the same time, the open casting has a fast heat dissipation speed, and the tin is easy to cool in advance. In order to avoid rapid solidification, the melting temperature needs to be increased, which further prolongs the cooling time, resulting in the extension of the production cycle of the tin bar, which not only increases the energy consumption but also reduces the overall production efficiency.

[0007] Therefore, how to construct a closed pressure casting system to realize efficient filling and rapid and accurate cooling of the molten tin while reducing the risk of impurity pollution is a problem that needs to be solved by those skilled in the art. SUMMARY

[0008] In order to solve the quality problems such as air hole, oxidation and insufficient filling caused by open casting and gravity flow of the traditional tin bar forming device, and to overcome the technical bottleneck of low cooling efficiency and long production cycle, and to meet the urgent needs of electronic information industry for high-precision and high-reliability environmentally friendly lead-free solder, the application provides a tin bar rapid forming device integrated with ice-making cooling module.

[0009] The tin bar rapid forming device integrated with ice-making cooling module provided by the application adopts the following technical scheme: A tin bar rapid forming device integrated with ice-making cooling module, comprising a rack, a mold body fixedly installed on the rack, a plurality of annularly distributed cavities formed in the mold body, the cavities penetrating through both ends of the mold body, a discharging assembly sealingly installed on the rack near the bottom of the mold body corresponding to the cavities, a die casting assembly sealingly installed on the top of the rack corresponding to the cavities, a melting kettle sealingly installed on the rack corresponding to the die casting assembly, the volume of the melting kettle being greater than the total volume of all the cavities, the top of the die casting assembly being sealingly and slidably connected inside the melting kettle, the bottom of the die casting assembly being sealingly and slidably connected inside the cavities, the cavities and the melting kettle being in communication through the die casting assembly, a melting temperature control system being installed on the melting kettle, and an ice-making cooling module being connected to the mold body.

[0010] Further, the discharging assembly comprises a first mounting plate fixedly installed on the rack, a first mounting hole being formed in the center of the first mounting plate corresponding to the mold body, a rotating disc being rotatably connected inside the first mounting hole, a discharging port being formed in the rotating disc corresponding to each of the cavities, the distance between adjacent two discharging ports being greater than the maximum width of the cavities, a first driven gear being fixedly sleeved on the outside of the rotating disc, a first driving member being fixedly installed on the outside of the mold body corresponding to the first driven gear, a first driving gear being fixedly installed on the first driving member and engaged with the first driven gear.

[0011] Further, the die casting assembly comprises a second mounting plate fixedly installed on the rack, a driving hole being formed in the second mounting plate corresponding to each of the cavities, a driving pipe being threadedly and drivingly connected inside the driving hole, one end of the driving pipe being inserted into the cavity, the other end of the driving pipe being inserted into the melting kettle; a die casting piston being fixedly connected to the end of the driving pipe inserted into the cavity, the die casting piston being sealingly and slidably connected inside the cavity, a die casting channel being formed in the die casting piston and in communication with the driving pipe; and a driving assembly being drivingly connected to the end of the driving pipe inserted into the melting kettle.

[0012] Further, the driving assembly comprises a mounting disc, the mounting disc is sealingly connected in the melting kettle, the driving pipes are penetrating through and sealingly connected on the mounting disc, the center of the mounting disc is fixedly installed with a second driving member, the second driving member is fixedly installed with a second driving gear, the driving pipes are fixedly installed with a second driven gear corresponding to the second driving gear, and the second driven gear is engaged with the second driving gear.

[0013] Further, the output shaft of the second driving member is fixedly installed with a stirring assembly inside the melting kettle, the stirring assembly comprises a mounting sleeve, the mounting sleeve is fixedly installed on the output shaft of the second driving member, the outer side of the mounting sleeve is installed with a plurality of annularly distributed stirring rods, the stirring rods are opened with a long strip-shaped feeding port on the side facing the rotating direction, and the stirring rods are opened with a spraying hole obliquely arranged towards the top of the melting kettle.

[0014] Further, the driving hole is fixedly installed with a limiting pin, the outer side of the driving pipe is opened with a spiral-shaped driving groove corresponding to the limiting pin, and the driving pipe is opened with a circular groove smoothly communicated with the driving groove corresponding to the two ends of the driving groove.

[0015] Further, the driving pipe is rotatably installed with an elastic frame on the side of the circular groove away from the driving groove, the elastic frame is fixedly installed with a plurality of annularly distributed elastic sheets, the elastic sheets are arranged in a spiral shape, the elastic sheets are opened with a round corner on the end away from the elastic frame, and the rotation directions of the two elastic sheets close to the two ends of the driving pipe are opposite.

[0016] Further, the melting temperature control system comprises a heat insulation cylinder, the heat insulation cylinder is fixedly and sealingly sleeved on the outer side of the melting kettle, the outer side of the melting kettle is installed with an electric heating wire coiled on the melting kettle between the inner side of the heat insulation cylinder, the outer side of the electric heating wire close to the outer side of the melting kettle is filled with a heat conducting material, the outer side of the electric heating wire close to the inner side of the heat insulation cylinder is filled with a heat insulation material, and the first temperature sensor is sealingly installed on the die casting assembly inside the melting kettle.

[0017] Further, the ice making cooling module comprises a second temperature sensor, the second temperature sensor is fixedly installed on the die body inside corresponding to the cavity, the die body is opened with a spiral-shaped heat exchange channel corresponding to the cavity, the die body is fixedly installed with a connecting seat on the outer side, the connecting seat is connected with an output pipe and an input pipe, the output pipe and the input pipe are connected with the two ends of the heat exchange channel respectively on the end close to the connecting seat, and the output pipe and the input pipe are connected with an ice making cooling assembly on the end away from the connecting seat.

[0018] Further, the ice-making cooling assembly comprises an ice-making box, an ice maker and a conveying pump are fixedly and sealingly connected on the ice-making box, the ice maker is electrically connected with the second temperature sensor, the output pipe is fixedly and sealingly connected on the ice-making box, and the input pipe is sealingly connected with the conveying pump.

[0019] The achieved beneficial effects are: The application utilizes the up-down movement of the die-casting assembly, which can not only discharge the air in the cavity before casting, but also increase the pressure inside the cavity during casting, effectively solving the problem of uneven casting and product defects caused by poor flowability of the molten tin material relying on only the self-weight, and the die-casting assembly can also complete feeding and discharging during the up-down movement, realizing efficient molding processing and being beneficial to improving the quality and production efficiency of the molded products. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a whole structure schematic diagram of one embodiment of the application.

[0021] Figure 2 is a structure exploded schematic diagram of one embodiment of the application.

[0022] Figure 3 is an internal structure schematic diagram of one embodiment of the application.

[0023] Figure 4 is a structure exploded schematic diagram of the discharging assembly in one embodiment of the application.

[0024] Figure 5 is Figure 3 is an enlarged schematic diagram of the first part structure in the application.

[0025] Figure 6 is a structure exploded schematic diagram of the die-casting assembly in one embodiment of the application.

[0026] Figure 7 is a three-dimensional structure schematic diagram of the elastic frame in one embodiment of the application.

[0027] Figure 8 is a sectional structure schematic diagram of the ice-making cooling assembly in one embodiment of the application.

[0028] Figure 9 is a three-dimensional structure schematic diagram of the stirring assembly in one embodiment of the application.

[0029] Explanation of reference signs: 100, rack; 101, stand column; 102, universal wheel; 103, connecting hole; 200, mold body; 201, cavity; 300, discharging assembly; 301, first mounting plate; 302, first mounting hole; 303, rotating disc; 304, discharging port; 305, first driven gear; 306, first driving piece; 307, first driving gear; 400, die casting assembly; 401, second mounting plate; 402, driving hole; 403, driving pipe; 404, die casting piston; 405, die casting channel; 406, limiting pin; 407, driving groove; 408, circular ring groove; 409, elastic frame; 410, elastic sheet; 411, round corner; 412, spiral channel; 413, connecting cavity; 500, melting kettle; 501, barrel; 502, barrel cover; 503, feeding pipe; 504, pressure control valve; 505, top cover; 600, melting temperature control system; 601, heat insulation barrel; 602, electric heating wire; 603, first temperature sensor; 700, ice making cooling module; 701, second temperature sensor; 703, heat exchange channel; 704, connecting seat; 705, output pipe; 706, input pipe; 707, ice making box; 708, ice maker; 709, conveying pump; 800, driving assembly; 801, mounting disc; 802, second driving piece; 803, second driving gear; 804, second driven gear; 900, stirring assembly; 901, mounting sleeve; 902, stirring rod; 903, feeding port; 904, material spraying hole. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying drawings. Figures 1-9 The present application is further described in detail.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The application discloses a tin strip rapid forming device integrated with an ice-making cooling module.

[0034] Please refer to Figures 1-9 In an embodiment of the application, the tin strip rapid forming device integrated with the ice-making cooling module comprises a rack 100, a mold body 200 fixedly installed on the rack 100, a plurality of annularly distributed cavities 201 formed in the mold body 200, the cavities 201 penetrating through two ends of the mold body 200, a discharging assembly 300 sealingly installed on the rack 100 and corresponding to the cavities 201 at a position close to the bottom of the mold body 200, a die-casting assembly 400 sealingly installed on the rack 100 and corresponding to the cavities 201 at the top of the mold body 200, a melting kettle 500 sealingly arranged on the rack 100 and corresponding to the die-casting assembly 400, the volume of the melting kettle 500 being greater than the total volume of all the cavities 201, the die-casting assembly 400 being sealingly and slidably connected to the inside of the melting kettle 500, the die-casting assembly 400 being sealingly and slidably connected to the inside of the cavity 201, and the cavity 201 and the melting kettle 500 being communicated through the die-casting assembly 400; a melting temperature control system 600 is installed on the melting kettle 500, and an ice-making cooling module 700 is connected to the mold body 200.

[0035] In the working process, the bottom of the cavity 201 is first closed by the discharging assembly 300, and then the die-casting assembly 400 is controlled to move from top to bottom; in the process of moving from top to bottom, the bottom of the die-casting assembly 400 fills the cavity 201, air in the cavity 201 is discharged, and at the same time, negative pressure is formed in the inside of the melting kettle 500, so that tin strip raw materials are sucked into the inside of the melting kettle 500.

[0036] In the process of casting, the die-casting assembly 400 is controlled to move from bottom to top; in the process of moving from bottom to top, the bottom of the die-casting assembly 400 moves away from the cavity 201, and at the same time, the top of the die-casting assembly 400 extrudes the molten tin in the inside of the melting kettle 500, so that the molten tin is injected into the inside of the cavity 201 through the die-casting assembly 400; since the volume of the melting kettle 500 is greater than the total volume of all the cavities 201, the pressure in the inside of the melting kettle 500 and the cavity 201 gradually increases along with the movement of the die-casting assembly 400 from bottom to top, until the casting is completed; after the product is solidified and shaped, the cavity 201 is opened by the discharging assembly 300; after the cavity 201 is opened, the die-casting assembly 400 is controlled to move from top to bottom again; in the process of moving from top to bottom, the bottom of the die-casting assembly 400 pushes out the product in the inside of the cavity 201.

[0037] Please refer to Figures 1-9In an embodiment of the present application, the rack 100 comprises four arrayed columns 101, each of which is fixedly installed with a universal wheel 102 at the bottom. The columns 101 sequentially pass through the corners of the discharging assembly 300, the mold body 200, the die casting assembly 400, and the melting kettle 500, and each of which is provided with a connecting hole 103 corresponding to the column 101. The column 101 is fixedly connected with the discharging assembly 300, the mold body 200, the die casting assembly 400, and the melting kettle 500 by passing through the connecting hole 103.

[0038] In the working process, the components are sequentially fixed on the rack 100 by the columns 101 passing through the connecting holes 103 of the discharging assembly 300, the mold body 200, the die casting assembly 400, and the melting kettle 500, forming a stable overall structure. The universal wheels 102 enable the entire die casting device to be conveniently moved in the workshop, facilitating the equipment to be positioned, overhauled, or the production layout to be adjusted. The columns 101 provide stable support, ensuring the relative positions of the components to be fixed, avoiding the displacement or shaking of the components due to the pressure effect, which affects the casting precision.

[0039] Please refer to Figures 1-9 In an embodiment of the present application, the discharging assembly 300 comprises a first mounting plate 301 fixedly installed on the rack 100. The first mounting plate 301 is provided with a first mounting hole 302 at the center corresponding to the mold body 200. A rotating disc 303 is rotatably connected inside the first mounting hole 302. The rotating disc 303 is provided with a discharging port 304 corresponding to each cavity 201. The distance between the adjacent two discharging ports 304 is greater than the maximum width of the cavity 201. The rotating disc 303 is fixedly sleeved with a first driven gear 305 on the outside. The mold body 200 is fixedly installed with a first driving member 306 corresponding to the first driven gear 305 on the outside. The first driving member 306 is fixedly installed with a first driving gear 307. The first driving gear 307 is engaged with the first driven gear 305.

[0040] In the working process, the first driving member 306 can drive the first driving gear 307 fixedly installed at the output end to rotate. Since the first driving gear 307 is engaged with the first driven gear 305 sleeved on the outside of the rotating disc 303, the first driven gear 305 will synchronously rotate with the rotation of the first driving gear 307, thereby driving the rotating disc 303 to rotate in the first mounting hole 302. Before casting, the rotating disc 303 is driven by the first driving member 306 to rotate to the position where the discharging port 304 on the rotating disc 303 and the cavity 201 on the mold body 200 are staggered, so as to complete the sealing of the cavity 201.

[0041] When the molten tin material in the cavity 201 is completed solidification molding, the first drive member 306 drives the rotating disc 303 to rotate to the ejection port 304 on the rotating disc 303 aligns with the cavity 201 on the mold body 200. When each ejection port 304 aligns with the corresponding cavity 201, the control of the die casting assembly 400 is moved from top to bottom, and the bottom of the die casting assembly 400 will push out the product inside the cavity 201. The molded product can be smoothly pushed out of the cavity 201 through the ejection port 304, and the ejection process is completed.

[0042] Please refer to Figures 1-9 In an embodiment of the present application, the first drive member 306 is configured as a servo motor, which realizes accurate control of the rotating disc 303 through a closed-loop control system. The servo motor is provided with an encoder to monitor the output shaft angle in real time and feed back the position data to the control system. When it is necessary to close the cavity 201, the control system drives the servo motor to rotate the first driving gear 307 according to the preset angle instruction, and the rotating disc 303 is accurately rotated to the position where the ejection port 304 is misaligned with the cavity 201 through gear engagement.

[0043] Please refer to Figures 1-9 In an embodiment of the present application, the die casting assembly 400 includes a second mounting plate 401 fixedly installed on the rack 100. The second mounting plate 401 is provided with a drive hole 402 corresponding to each cavity 201. The drive hole 402 is threadedly connected with a drive pipe 403. One end of the drive pipe 403 is inserted into the cavity 201, and the other end of the drive pipe 403 is inserted into the melting kettle 500. The end of the drive pipe 403 inserted into the cavity 201 is fixedly connected with a die casting piston 404. The die casting piston 404 is sealingly and slidably connected in the cavity 201. The die casting piston 404 is provided with a die casting channel 405 in communication with the drive pipe 403. The end of the drive pipe 403 inserted into the melting kettle 500 is drivingly connected with a drive assembly 800.

[0044] When the molten tin material is cast, the drive assembly 800 is started to drive the drive pipe 403 to rotate. Since the drive pipe 403 is threadedly connected with the drive hole 402 on the second mounting plate 401, the drive pipe 403 will displace in the axial direction with the rotation.

[0045] When the material is cast, the driving assembly 800 drives the driving pipe 403 to move towards the melting kettle 500, and the die casting piston 404 moves synchronously, so that the molten tin in the melting kettle 500 enters the die casting channel 405 through the driving pipe 403, and finally enters the inside of the cavity 201 through the die casting channel 405; during the die casting process, the die casting piston 404 is in sealing sliding connection with the inner wall of the cavity 201, so as to ensure that the material cannot leak from the gap between the piston and the cavity wall, and as the die casting piston 404 continuously presses the material into the cavity 201, until the cavity 201 is filled, the casting process is completed.

[0046] After the material is solidified and formed, the driving assembly 800 drives the driving pipe 403 to move towards the cavity 201, and the die casting piston 404 ejects the product inside the cavity 201 after solidification and formation. At the same time, the die casting piston 404 is reset, preparing for the next casting.

[0047] Please refer to Figures 1-9 In a specific embodiment of the present application, a limiting pin 406 is fixedly installed in the driving hole 402, and a spiral driving groove 407 is formed on the outer side of the driving pipe 403 corresponding to the limiting pin 406. The driving pipe 403 is provided with a circular groove 408 in smooth communication with the driving groove 407 at both ends of the driving groove 407.

[0048] During the working process, when the driving assembly 800 drives the driving pipe 403 to rotate, because the driving groove 407 on the outer side of the driving pipe 403 cooperates with the limiting pin 406 in the driving hole 402, with the rotation of the driving pipe 403, the relative movement between the driving groove 407 and the limiting pin 406 causes the driving pipe 403 to displace axially, thereby driving the die casting piston 404 to move up and down in the cavity 201, realizing the suction and die casting of the material.

[0049] When the driving pipe 403 moves up and down to the limit position, with the continuous rotation of the driving pipe 403, the limiting pin 406 will enter the circular groove 408, at this time the driving pipe 403 continues to rotate, but the axial displacement stops, and the driving pipe 403 will drive the die casting piston 404 to keep rotating at the limit position.

[0050] When the die casting piston 404 moves to the lower limit position, the circular groove 408 can be used to continue the rotation of the driving pipe 403 and the die casting piston 404, and the rotation of the driving pipe 403 can prevent the upper end of the driving groove 407 from impacting the limiting pin 406, avoiding the breakage of the limiting pin 406 caused by the impact.

[0051] When the die-casting piston 404 moves to the upper limit position, the driving pipe 403 and the die-casting piston 404 can continue to rotate by using the circular ring groove 408, and the rotation of the driving pipe 403 can not only prevent the lower end of the driving groove 407 from impacting the limit pin 406, but also avoid the limit pin 406 from being broken by the impact.

[0052] The rotation of the die-casting piston 404 can also prevent the raw material inside the die-casting channel 405 from being solidified with the raw material inside the cavity 201 into an integral whole, so as to facilitate demolding and also ensure that the product can form a better end face.

[0053] When the driving pipe 403 needs to move in the reverse direction, the driving assembly 800 drives the driving pipe 403 to reverse, the limit pin 406 can smoothly enter the driving groove 407 from the circular ring groove 408 again, and the driving pipe 403 drives the die-casting piston 404 to move in the reverse direction.

[0054] Please refer to Figures 1-9 In an embodiment of the present application, the elastic frame 409 is rotatably installed on one side of the driving pipe 403 away from the circular ring groove 408, a plurality of annular elastic sheets 410 are fixedly installed on the elastic frame 409, the elastic sheets 410 are arranged in a spiral shape, a rounded corner 411 is formed at one end of the elastic sheet 410 away from the elastic frame 409, and the rotation directions of the two elastic sheets 410 close to the two ends of the driving pipe 403 are opposite.

[0055] In the working process, when the driving pipe 403 rotates to the position where the limit pin 406 enters the inside of the circular ring groove 408, the driving pipe 403 stops moving in the axial direction. At this time, the elastic sheets 410 on the elastic frame 409 abut against the second mounting plate 401 and are elastically deformed. When the driving pipe 403 needs to move in the reverse direction, the driving assembly 800 drives the driving pipe 403 to reverse, and the thrust generated by the elastic deformation of the elastic sheets 410 will assist the driving pipe 403 to move in the reverse direction, so that the limit pin 406 more stably and reliably enters the driving groove 407 from the circular ring groove 408 on the driving pipe 403, and the stability of the driving pipe 403 in the reversing process of the axial movement is increased.

[0056] Please refer to Figures 1-9 In an embodiment of the present application, the die-casting channel 405 is arranged as a plurality of helical channels 412 arranged in a central symmetry with the center axis of the die-casting piston 404 as the center, one end of the helical channel 412 penetrates the bottom end of the die-casting piston 404, the top end of the die-casting piston 404 is provided with a connecting cavity 413 in communication with the driving pipe 403, and the connecting cavity 413 is in communication with the top ends of all the helical channels.

[0057] In the process of pressure casting of the molten tin material, the molten tin material enters the connecting cavity 413 at the top end of the pressure casting piston 404 from the driving pipe 403. Since the connecting cavity 413 is in communication with a plurality of helical channels 412 arranged in a central symmetry, the material is uniformly distributed into each helical channel 412. When the driving pipe 403 drives the pressure casting piston 404 to move towards the top of the cavity 201, the material in the helical channel 412 flows into the cavity 201 under pressure. Due to the special structure of the helical channel 412, the material generates a rotating motion during the flow process. This rotating flow enables the material to more uniformly fill the space in the cavity 201 when entering the cavity 201, reducing the dead angle and bubbles caused by the direct impact of the material on the cavity wall. At the same time, the central symmetry of the helical channel 412 ensures the uniformity of material flow in all directions, further improving the filling effect.

[0058] Referring to Figures 1-9 In an embodiment of the present application, the cross-sectional shape of the cavity 201 is circular. The cavity 201 with a circular cross-sectional shape can be used to produce a tin strip with a circular cross-sectional shape.

[0059] It can be understood that in other embodiments of the present application, the cross-sectional shape of the cavity 201 can also be rectangular. When the cavity 201 with a rectangular cross-sectional shape is used, only a rectangular block that is sealingly rotatably connected to the outside of the pressure casting piston 404 is needed. The outer side surface of the rectangular block is sealingly and slidably connected to the inner side surface of the cavity 201 to produce a tin strip with a rectangular cross-sectional shape.

[0060] Referring to Figures 1-9 In an embodiment of the present application, the melting kettle 500 includes a barrel 501 fixedly installed on the frame 100. The bottom end of the barrel 501 is fixedly and sealingly connected to the top surface of the second mounting plate 401. A barrel cover 502 is fixedly and sealingly installed at the top end of the barrel 501. An inlet pipe 503 and a pressure control valve 504 are fixedly and sealingly connected to the barrel cover 502. The inlet pipe 503 is connected to an external raw material conveying device through a quantitative control valve. The pressure control valve 504 is used to control the pressure inside the melting kettle 500. A top cover 505 is detachably and sealingly connected to the top of the barrel cover 502.

[0061] Before pressure casting of the molten tin material, the inside of the melting kettle 500 can be inspected, cleaned and installed and debugged by opening the top cover 505. After completing the preparation work, the top cover 505 is closed to seal the melting kettle 500. The molten tin material in the external raw material conveying device can be conveyed into the melting kettle 500 through the inlet pipe 503. The amount of material is accurately controlled by the quantitative control valve to ensure the consistency of each feeding.

[0062] During the process of pressure casting of molten tin material, the pressure control valve 504 monitors and adjusts the internal pressure of the melting kettle 500 in real time. When the internal pressure exceeds the preset value, the pressure control valve 504 automatically opens the pressure relief to prevent material overflow or damage to equipment due to excessive pressure. When the pressure is insufficient, the pressure control valve 504 is closed to maintain stable pressure. In this way, a closed-loop control can be formed with the pressure casting assembly, so that the real-time pressure value of each cavity is equal to the set working pressure value.

[0063] For reference Figures 1-9 In one specific embodiment of the present application, the melting temperature control system 600 includes a heat insulation cylinder 601, which is fixedly and sealingly sleeved outside the melting kettle 500. A coiled heating wire 602 is installed between the outer side of the melting kettle 500 and the inner side of the heat insulation cylinder 601. The outer part of the heating wire 602 close to the outer side of the melting kettle 500 is filled with a heat-conducting material, and the outer part of the heating wire 602 close to the inner side of the heat insulation cylinder 601 is filled with a heat insulation material. A first temperature sensor 603 is sealingly installed inside the melting kettle 500 on the pressure casting assembly 400.

[0064] During the process of pressure casting of molten tin material, the melting temperature control system 600 controls the temperature of the material in the melting kettle 500 by the following method: First, the control system supplies power to the heating wire 602 according to the preset process temperature parameters. After the heating wire 602 coiled on the melting kettle 500 is powered on, heat is generated, which is quickly and uniformly transferred to the melting kettle 500 through the heat-conducting material on the inner side, thereby heating the molten tin material in the cylinder to the appropriate molten state.

[0065] During this process, the first temperature sensor 603 installed inside the melting kettle 500 on the pressure casting assembly 400 monitors the temperature of the material in the cylinder in real time and feeds back the temperature data to the control system. When the temperature is lower than the preset value, the control system increases the power supply of the heating wire 602 to speed up the heating speed; when the temperature approaches or reaches the preset value, the power supply is reduced to keep the temperature stable.

[0066] The heat insulation material filled outside the heat insulation cylinder 601 and the heating wire 602 effectively prevents heat loss to the outside, reduces heat loss, avoids affecting surrounding equipment and operating personnel, and ensures the heating efficiency and accuracy of temperature control.

[0067] For reference Figures 1-9In an embodiment of the present application, the heat-conducting material outside the heating wire 602 and close to the melting kettle 500 needs to have high thermal conductivity, high-temperature stability, electrical insulation, and mechanical strength. The heat-conducting material can be alumina (Al2O3) ceramic, aluminum nitride (AlN) ceramic, etc. The high-thermal-conductivity material accelerates the temperature response speed, reduces the fluctuation range to ±1°C, ensures the stability of the molten tin material, and improves the product performance consistency.

[0068] Please refer to Figures 1-9 In an embodiment of the present application, the heat-insulating material filled inside the heat-insulating cylinder 601 outside the heating wire 602 can be ceramic fiber (such as aluminum silicate fiber) or aerogel composite material. By filling the heat-insulating material, a high-efficiency heat shield is formed to ensure that the heat of the heating wire 602 is concentrated and conducted to the inside of the melting kettle 500, reducing the loss to the outside of the device, and at the same time protecting the heat-insulating cylinder 601 and the surrounding structure from high temperature.

[0069] Please refer to Figures 1-9 In an embodiment of the present application, the ice-making cooling module 700 includes a second temperature sensor 701 fixedly installed at a position corresponding to the cavity 201 inside the mold body 200. The cavity 201 inside the mold body 200 is provided with a heat exchange channel 703 arranged in a spiral shape. The mold body 200 is fixedly installed with a connecting seat 704 on the outside. The connecting seat 704 is connected with an output pipe 705 and an input pipe 706. The output pipe 705 and the input pipe 706 are respectively connected with two ends of the heat exchange channel 703 at one end close to the connecting seat 704. The other end of the output pipe 705 and the input pipe 706 away from the connecting seat 704 is connected with an ice-making cooling assembly.

[0070] In the process of die casting the molten tin material, the ice-making cooling assembly delivers cooling medium at a set temperature to the connecting seat 704 through the input pipe 706. The cooling medium enters the heat exchange channel 703 arranged in a spiral shape inside the mold body 200 from the connecting seat 704. The spiral-shaped heat exchange channel 703 enables the heat-conducting medium to flow uniformly around the cavity 201 and fully exchanges heat with the mold material around the cavity 201, thereby accurately controlling the temperature of the cavity 201. The cooling medium after heat exchange flows back to the ice-making cooling assembly through the output pipe 705, forming a closed loop. The second temperature sensor 701 monitors the temperature at the position of the cavity 201 in real time and feeds back the temperature data to the ice-making cooling assembly. The temperature control system dynamically adjusts the temperature and flow of the heat-conducting medium according to the feedback data, ensuring that the temperature of the cavity 201 always remains within the set process range. In the solidification and molding stage, the low-temperature cooling medium rapidly cools down, shortening the molding cycle.

[0071] Please refer to Figures 1-9In an embodiment of the present application, the ice-making cooling assembly includes an ice-making tank 707, and an ice maker 708 and a delivery pump 709 are fixedly and sealingly connected to the ice-making tank 707, the ice maker 708 is electrically connected with the second temperature sensor 701, and an output pipe 705 is fixedly and sealingly connected to the ice-making tank 707, and an input pipe 706 is sealingly connected with the delivery pump 709.

[0072] In the working process, the second temperature sensor 701 monitors the key temperature node data in the tin strip forming process in real time and feeds back the information to the ice maker 708. When the monitored temperature is higher than the set threshold, the ice maker 708 is started to quickly make ice in the ice-making tank 707. The delivery pump 709 draws the cooling liquid in the ice-making tank 707, and delivers it to the corresponding part of the tin strip forming through the input pipe 706 and the output pipe 705 to cool and cool the molten or just-formed tin strip. After the cooling liquid completes heat dissipation, it flows back to the ice-making tank 707 to form a circulating cooling. Through the linkage of the temperature sensor and the ice maker and the delivery pump, dynamic and accurate control of the tin strip cooling process is realized.

[0073] In an embodiment of the present application, the cooling medium uses a cooling liquid prepared by mixing ethylene glycol and water at a ratio of 3:7 to 5:5.

[0074] In actual operation, the mixing ratio of ethylene glycol and deionized water can be adjusted according to the target freezing point, for example, the freezing point of 3:7 ratio is about -12℃, and the freezing point of 5:5 ratio can reach -35℃. By adjusting the ratio, the freezing point can be reduced to below -35℃ to avoid freezing of the cooling liquid due to low temperature during the ice-making cooling process, ensuring smooth operation of the circulating system, especially suitable for the low-temperature environment generated by the ice maker. At the same time, the mixed system of ethylene glycol and water retains the high thermal conductivity of water (thermal conductivity coefficient about 0.5-0.6 W / (m•K)), which is much higher than that of pure organic cooling liquid, and can quickly absorb the heat generated during the tin strip forming, which is beneficial to accelerate the cooling process.

[0075] Please refer to Figures 1-9 In an embodiment of the present application, the driving assembly 800 includes a mounting disc 801 sealingly and slidingly connected in the melting kettle 500, the driving pipes 403 all penetrate through the mounting disc 801 and are sealingly and rotatably connected to the mounting disc 801, the center of the mounting disc 801 is fixedly installed with a second driving member 802, the second driving member 802 is fixedly installed with a second driving gear 803, the driving pipes 403 are all fixedly installed with a second driven gear 804 corresponding to the second driving gear 803, and the second driven gear 804 is engaged with the second driving gear 803.

[0076] In the casting process of the molten tin material, when it is required to drive the die casting assembly 400 to perform die casting, the second driving member 802 is started to drive the second driving gear 803 fixed on the output shaft thereof to rotate. Since the second driving gear 803 is engaged with the second driven gears 804 on each driving pipe 403, the rotation of the second driving gear 803 can synchronously drive all the second driven gears 804 to rotate, and then drive the driving pipe 403 fixedly connected with the second driven gears 804 to rotate. Since the driving pipe 403 is threadedly driven in the driving hole 402, the rotation of the driving pipe 403 can be converted into axial movement, which can drive the die casting piston 404 to move up and down in the cavity 201, and synchronously drive the mounting disc 801 to move up and down in the melting kettle 500, so as to realize the suction and die casting operation of the molten tin material.

[0077] When the second driving member 802 drives the driving pipe 403 to rotate and move downward, the driving pipe 403 drives the die casting piston 404 to move downward in the cavity 201, and synchronously drives the mounting disc 801 to move downward in the melting kettle 500, so as to realize the suction of the external material into the melting kettle 500 while the air in the cavity 201 is discharged, and realize the suction operation of the material.

[0078] When the second driving member 802 drives the driving pipe 403 to rotate and move upward, the driving pipe 403 drives the die casting piston 404 to move upward in the cavity 201, and synchronously drives the mounting disc 801 to move upward in the melting kettle 500, so as to realize the die casting of the material in the melting kettle 500 into the cavity 201, and realize the die casting operation of the material.

[0079] Please refer to Figures 1-9 In an embodiment of the present application, the second driving member 802 is configured as an alternating current permanent magnet synchronous motor. The alternating current permanent magnet synchronous motor (PMSM) has an output torque 15%-20% higher than that of a direct current motor under the same volume, is suitable for a space-limited scene, does not need a brush and a commutator, has low maintenance cost, and is suitable for a continuous operation industrial scene. Meanwhile, the alternating current permanent magnet synchronous motor adopts a vector control technology to realize precise torque control, and torque fluctuation is less than ±1%. The alternating current permanent magnet synchronous motor has strong anti-interference ability and is suitable for a complex electromagnetic environment.

[0080] It can be understood that in other embodiments of the present application, the second driving member 802 can also be configured as other motors, for example, a direct current servo motor. The direct current servo motor has a rated torque up to dozens of N•m, and a short-time overload torque can reach 2-3 times of the rated value. The response time is less than 50 ms, the direct current servo motor supports frequent forward and reverse rotation switching, and is suitable for a working condition requiring rapid start and stop. Moreover, the direct current servo motor maintains constant torque output at low speed, and is suitable for the thread transmission of the die casting assembly 400 which needs to overcome large static friction.

[0081] Please refer toFigures 1-9 In one specific embodiment of the present application, a stirring assembly 900 is fixedly installed on the output shaft of the second driving member 802 inside the melting kettle 500. The stirring assembly 900 comprises a mounting sleeve 901 fixedly installed on the output shaft of the second driving member 802, and a plurality of annularly and uniformly distributed stirring rods 902 mounted on the outer side of the mounting sleeve 901. A long strip-shaped feeding port 903 is formed on one side of the stirring rod 902 facing the rotating direction thereof, and a material spraying hole 904 is formed on one side of the stirring rod 902 facing the top of the melting kettle 500 and is obliquely upwardly arranged.

[0082] In the working process, when the second driving member 802 is started, the output shaft drives the mounting sleeve 901 to rotate, and the stirring rods 902 mounted on the outer side of the mounting sleeve 901 are synchronously rotated. The rotation of the stirring rods 902 can mechanically stir the surrounding material and promote the mixing and flowing of the material. At the same time, in the rotating process of the stirring rods 902, the molten tin material in the melting kettle 500 enters the rod body from the feeding port 903 on the stirring rod 902. Due to the centrifugal force generated by the rotation of the stirring rod 902, the material entering the rod body is sprayed out through the obliquely upwardly arranged material spraying hole 904. The obliquely upwardly arranged angle of the material spraying hole 904 enables the material to be sprayed to the middle and upper regions of the melting kettle 500, forming a circulating flow. In the whole process, the stirring assembly 900 and the driving assembly 800 share the power source of the second driving member 802, realizing synchronous operation. While the driving pipe 403 drives the die casting piston 404 to perform die casting operation, the stirring assembly 900 dynamically stirs the molten tin material in the melting kettle 500, ensuring the uniformity of the material.

[0083] The implementation principle of the tin bar rapid forming device integrated with the ice-making cooling module according to the embodiment of the present application is as follows: The present application realizes rapid and high-quality forming of tin bars through closed die casting, precise temperature control and high-efficiency cooling.

[0084] Firstly, the discharge assembly 300 seals the bottom of the cavity 201, the driving assembly 800 drives the driving pipe 403 to move downward, the die casting piston 404 discharges the air inside the cavity 201, the mounting disc 801 moves downward to form negative pressure in the melting kettle 500 to suck the raw material. The electric heating wire 602 of the melting temperature control system 600 heats and melts the raw material of the tin bar, and the electric heating wire 602 and the first temperature sensor 603 maintain the stable melting state of the molten tin material.

[0085] Then, the driving assembly 800 is reversely driven, the die casting piston 404 moves upward, the mounting disc 801 extrudes the tin material in the melting kettle 500, and the tin material is injected into the cavity 201 through the spiral-shaped channel 412. The volume of the melting kettle 500 is greater than the total volume of the cavities 201, and the pressure control valve 504 is matched to ensure that the tin material is completely filled without defects.

[0086] Then, the ice-making cooling module 700 is started, the second temperature sensor 701 monitors the temperature of the cavity 201, the ice maker 708 prepares the cooling liquid, and the delivery pump 709 pumps it into the spiral heat exchange channel 703, and then it flows back through the output pipe 705 after rapid heat absorption, realizing rapid solidification of the tin material.

[0087] Finally, the rotating disc 303 of the discharge assembly 300 is aligned with the discharge port 304, the driving pipe 403 is lowered to make the die casting piston 404 eject the formed tin bar. The stirring assembly 900 is synchronously operated to ensure uniform tin material, solve the traditional defects throughout the process, and efficiently produce high-quality tin bars.

[0088] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tin bar rapid prototyping device with an integrated ice making and cooling module, characterized by: The invention comprises a frame (100), a mold body (200) is fixedly mounted on the frame (100), a plurality of annular evenly distributed cavities (201) are opened inside the mold body (200), the cavities (201) pass through both ends of the mold body (200), a discharge assembly (300) is sealed and mounted on the frame (100) at a position close to the bottom of the mold body (200) corresponding to the cavity (201), a die-casting assembly (400) is sealed and mounted on the frame (100) at a position close to the bottom of the mold body (200) corresponding to the cavity (201), and a die-casting assembly (400) is sealed and mounted on the frame (100) corresponding to the die-casting assembly (400). The component (400) is installed with a sealed melt kettle (500), the volume of the melt kettle (500) is greater than the total volume of all the cavities (201), the top of the die-cast component (400) is sealed and slidably connected to the inside of the melt kettle (500), and the bottom of the die-cast component (400) is sealed and slidably connected to the inside of the cavity (201), and the cavity (201) and the melt kettle (500) are connected through the die-cast component (400); a melting temperature control system (600) is installed on the melt kettle (500), and an ice-making cooling module (700) is connected to the mold body (200).

2. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 1, characterized in that: The discharge assembly (300) includes a first mounting plate (301), which is fixedly mounted on the frame (100); a first mounting hole (302) is provided at the center of the first mounting plate (301) corresponding to the mold body (200); a rotating disk (303) is rotatably connected inside the first mounting hole (302); a discharge port (304) is provided on the rotating disk (303) corresponding to each of the mold cavities (201); a distance between two adjacent discharge ports (304) is greater than the maximum width of the mold cavity (201); a first driven gear (305) is fixedly sleeved on the outer side of the rotating disk (303); a first driving member (306) is fixedly mounted on the outer side of the mold body (200) corresponding to the first driven gear (305); a first driving gear (307) is fixedly mounted on the first driving member (306); and the first driving gear (307) is meshed with the first driven gear (305).

3. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 1, characterized in that: The die-casting assembly (400) includes a second mounting plate (401), the second mounting plate (401) is fixedly mounted on the frame (100), a driving hole (402) is provided on the second mounting plate (401) corresponding to each of the cavities (201), a driving tube (403) is connected to the internal thread of the driving hole (402), one end of the driving tube (403) is inserted into the interior of the cavity (201), and the other end of the driving tube (403) is inserted into the cavity (201). The driving tube (403) is inserted into the mold cavity (201), one end of which is fixedly connected to a die-casting piston (404), the die-casting piston (404) is sealingly and slidingly connected to the mold cavity (201), and a die-casting channel (405) connected to the driving tube (403) is provided inside the die-casting piston (404); the driving tube (403) is inserted into the mold cavity (500), one end of which is transmission-connected to a driving assembly (800).

4. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 3, characterized in that: The driving assembly (800) includes a mounting plate (801), the mounting plate (801) is sealingly and slidably connected to the melting pot (500), the driving tubes (403) all pass through the mounting plate (801) and are sealingly and rotatably connected to the mounting plate (801), a second driving member (802) is fixedly mounted at the center of the mounting plate (801), a second driving gear (803) is fixedly mounted on the second driving member (802), a second driven gear (804) is fixedly mounted on the driving tubes (403) corresponding to the second driving gear (803), and the second driven gear (804) is meshed with the second driving gear (803).

5. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 4, characterized in that: A stirring assembly (900) is fixedly installed on the output shaft of the second driving member (802) inside the melt kettle (500), and the stirring assembly (900) includes a mounting sleeve (901), and the mounting sleeve (901) is fixedly installed on the output shaft of the second driving member (802). A plurality of annular stirring rods (902) are installed on the outer side of the mounting sleeve (901), and a long strip-shaped feed port (903) is provided on the side of the stirring rod (902) facing the direction of rotation thereof, and a spray hole (904) is provided on the side of the stirring rod (902) facing the top of the melt kettle (500) and arranged obliquely upward.

6. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 3, characterized in that: A limit pin (406) is fixedly installed inside the driving hole (402), and a spirally arranged driving groove (407) is provided on the outer side surface of the driving tube (403) corresponding to the limit pin (406). An annular groove (408) which is smoothly connected to the driving groove (407) is provided at both ends of the driving tube (403) corresponding to the driving groove (407).

7. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 6, characterized in that: An elastic frame (409) is rotatably mounted on the driving tube (403) at one side of the annular groove (408) away from the driving groove (407), and a plurality of annularly evenly distributed spring pieces (410) are fixedly mounted on the elastic frame (409). The spring pieces (410) are arranged in a spiral shape, and a rounded corner (411) is provided at one end of the spring piece (410) away from the elastic frame (409). The two spring pieces (410) respectively close to the two ends of the driving tube (403) have opposite rotation directions.

8. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 1, characterized in that: The melting temperature control system (600) includes an insulating tube (601), which is fixedly and sealedly mounted on the outside of the melting kettle (500), and an electric heating wire (602) wound on the melting kettle (500) is installed between the outer side of the melting kettle (500) and the inner side of the insulating tube (601), and the outer part of the heating wire (602) close to the outer side of the melting kettle (500) is filled with a heat-conducting material, and the outer part of the heating wire (602) close to the inner side of the insulating tube (601) is filled with a heat-insulating material; a first temperature sensor (603) is sealed and installed on the die-casting component (400) inside the melting kettle (500).

9. The tin bar rapid prototyping device with integrated ice making and cooling module according to claim 1, characterized in that: The ice-making cooling module (700) comprises a second temperature sensor (701), which is fixedly mounted at a position inside the mold body (200) corresponding to the mold cavity (201); a heat exchange channel (703) arranged in a spiral shape is provided inside the mold body (200) corresponding to the mold cavity (201); a connecting seat (704) is fixedly mounted on the outside of the mold body (200); an output pipe (705) and an input pipe (706) are connected to the connecting seat (704); one end of the output pipe (705) and the input pipe (706) close to the connecting seat (704) are respectively connected to two ends of the heat exchange channel (703); and one end of the output pipe (705) and the input pipe (706) away from the connecting seat (704) are connected to an ice-making cooling assembly.

10. The tin bar rapid prototyping device integrated with an ice making and cooling module according to claim 9, characterized in that: The ice-making cooling assembly comprises an ice-making refrigerator (707), an ice-maker (708) and a delivery pump (709) being fixedly and sealedly connected to the ice-making refrigerator (707), the ice-maker (708) being electrically connected to the second temperature sensor (701), the output pipe (705) being fixedly and sealedly connected to the ice-making refrigerator (707), and the input pipe (706) being sealedly connected to the delivery pump (709).

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