A quick-change device and method for spot cooling inside a die-casting mold

Abstract

The present invention discloses a quick-change device and method for spot cooling inside a die-casting mold, which belongs to the technical field of high-pressure casting. The spot cooling mechanism includes a core needle and an inner cooling tube. The inner cooling tube is coaxially arranged inside the core needle, and the two ends of the core needle are respectively connected to the mounting groove and the mold cavity. The driving mechanism includes a power component and a moving component. The moving component is arranged in the mounting groove, and a quick-change joint is provided at the end of the moving component facing the inner cooling tube, and the quick-change joint is detachably connected to the end of the inner cooling tube. A cooling pipe is provided in the moving component, and the cooling pipe is connected to the inner cooling tube. A corresponding quick-change method is also disclosed. The present invention provides a quick-change device and method for spot cooling inside a die-casting mold, which can not only realize the convenient dismantling of the entire spot cooling structure without the mold being hoisted, but also complete the convenient replacement and maintenance of the leakage position of the spot cooling tube structure, thereby significantly improving the maintenance efficiency of the spot cooling structure while simplifying the maintenance process of the spot cooling structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-pressure casting, and in particular relates to a quick-change device and method for spot cooling inside a die-casting mold. Background Art

[0002] As one of the important technical means for workpiece preparation, high-pressure casting is widely used in various technical fields of production and preparation due to its wide range of applications, low workpiece preparation cost, and batch and reusable characteristics.

[0003] In the field of high-pressure casting technology, for specific parts of the mold, it is necessary to quickly cool the local high-temperature areas during the die-casting process, that is, to perform spot cooling on the core and slider. This can not only accurately control the solidification order of the molten metal and avoid the occurrence of defects such as shrinkage cavities or shrinkage, but also reduce the local high temperature of the workpiece, thereby reducing the thermal stress inside the casting, reducing the risk of workpiece deformation and cracking, and also making the casting surface smoother and reducing surface defects.

[0004] In the related art, spot cooling of die-cast parts is usually achieved by a spot cooling structure set on the mold. The spot cooling tube of the spot cooling structure is usually fixed to the mold by threaded fitting. If the spot cooling structure is damaged, resulting in mold leakage, in the process of replacing and repairing the spot cooling structure, it is usually necessary to first lift the mold open, and then the entire spot cooling structure needs to be disassembled from the mold. Therefore, the fault repair process in the related art is relatively complicated, and the repair efficiency of the spot cooling structure repaired in this way is also low. Summary of the Invention

[0005] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides a quick-change device and method for spot cooling inside a die-casting mold, which can not only conveniently dismantle the entire spot cooling structure without lifting the mold, but also conveniently replace and repair the leakage position of the spot cooling pipe structure, thereby simplifying the spot cooling structure maintenance process while significantly improving the maintenance efficiency of the spot cooling structure.

[0006] To achieve the above-mentioned object, the present invention provides a quick-change device for spot cooling inside a die-casting mold, which is arranged on a mold frame, wherein a mold cavity is arranged on one end surface of the mold frame; a mounting groove is arranged on the end surface of the mold frame facing away from the mold cavity; and the quick-change device is mounted in the mounting groove;

[0007] The quick-change device includes a driving mechanism and a spot cooling mechanism;

[0008] The spot cooling mechanism includes a core pin and an inner cooling tube, wherein the inner cooling tube is coaxially arranged inside the core pin, one end of the core pin is arranged on the bottom surface of the mounting groove, and the other end of the core pin passes through the mold frame and reaches the mold cavity;

[0009] The driving mechanism includes a power component and a moving component, the moving component is arranged in the mounting groove, and a quick-change joint is provided at the end of the moving component facing the inner cooling tube, the quick-change joint is detachably connected to the end of the inner cooling tube; the power component cooperates with the moving component to drive the moving component to move;

[0010] At least one cooling pipe is provided in the moving component, and the cooling pipe is communicated with the inner cooling pipe and is used for introducing a cooling medium into the inner cooling pipe.

[0011] As a further preferred embodiment of the present invention, a gear pair is provided between the power component and the motion component, a gear is provided at the rotating end of the power component, and the motion component includes a rack meshing with the gear.

[0012] As a further preferred embodiment of the present invention, the moving component is slidably fitted into the mounting groove.

[0013] As a further preferred embodiment of the present invention, the moving component further includes a mounting base slidably connected to the mounting groove, and the rack is slidably disposed on the mounting base.

[0014] As a further preferred embodiment of the present invention, the quick-change connector is a trumpet-shaped ring structure, and a plurality of notches are provided on the large-diameter end of the trumpet-shaped ring structure along the circumferential direction.

[0015] As a further preferred embodiment of the present invention, an annular force equalizing ring is provided on the large diameter end of the quick-change connector, an abutment groove is provided on the force equalizing ring, and the large diameter end of the quick-change connector abuts in the abutment groove.

[0016] As a further preferred embodiment of the present invention, the small diameter end of the quick-change connector abuts the mounting base, and a U-shaped barb is provided at the end of the rack facing the cavity, and the U-shaped barb is configured as follows: the U-shaped barb abuts or disengages from the force equalizing ring as the rack moves.

[0017] As a further preferred embodiment of the present invention, the cooling pipe includes an injection pipe and a return pipe, the injection pipe is connected to the inner cooling pipe, and the return pipe is used to lead out the high-temperature cooling medium.

[0018] As a further preferred embodiment of the present invention, a mounting shell is provided in the mounting groove, and a detachable cover is provided on the end surface of the mounting shell facing away from the cavity.

[0019] The present invention also discloses a quick-change method for spot cooling inside a die casting mold, which is used for replacing the spot cooling inside the die casting mold. The method is implemented by using the quick-change device for spot cooling inside the die casting mold, and includes the following steps:

[0020] The power component drives the moving component to move away from the mold cavity until the quick-change connector is separated from the end of the inner cooling tube;

[0021] Remove the driving mechanism from the installation slot and replace the moving component;

[0022] Reinstalling the replaced moving component into the installation slot;

[0023] The power component drives the moving component to move toward the cavity until the quick-change connector is re-engaged with the end of the inner cooling tube.

[0024] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

[0025] (1) The quick-change device for spot cooling inside the die-casting mold of the present invention includes a driving mechanism and a spot cooling mechanism. The spot cooling mechanism includes a core needle and an inner cooling tube. The inner cooling tube is coaxially arranged inside the core needle. One end of the core needle is arranged on the bottom surface of the mounting groove, and the other end of the core needle passes through the mold frame and reaches the mold cavity. The driving mechanism includes a power component and a moving component. The moving component is arranged in the mounting groove, and a quick-change joint is provided at the end of the moving component facing the inner cooling tube. The quick-change joint is detachably connected to the end of the inner cooling tube. A cooling pipe is provided inside the moving component, and the cooling pipe is connected to the inner cooling tube. The quick-change device can not only realize the convenient dismantling of the entire spot cooling structure without lifting the mold, but also complete the convenient replacement and maintenance of the leaking position of the spot cooling tube structure, thereby simplifying the maintenance process of the spot cooling structure while significantly improving the maintenance efficiency of the spot cooling structure.

[0026] (2) The quick-change device for spot cooling inside the die-casting mold of the present invention adopts a quick-change joint with a trumpet-shaped ring structure and is equipped with a plurality of notches at the large-diameter end of the quick-change joint. As the quick-change joint moves with the mounting base, the trumpet-shaped ring-shaped outward-turning clamping plate can compress the outer wall of the inner cooling tube, thereby completing the quick connection between the inner cooling tube and the moving component. At the same time, by providing a force-equalizing ring at the end of the quick-change joint facing the cavity and a U-shaped barb provided on the rack, the force transmitted by the power component can be evenly applied to the outward-turning clamping plate through the force-equalizing ring, ensuring that the outward-turning clamping plate can be deformed under the action of the force-equalizing ring, so that the quick-change joint can be quickly disassembled from the inner cooling tube, providing convenience for the replacement of the spot cooling structure.

[0027] (3) The quick-change device and method for spot cooling inside the die-casting mold of the present invention have a simple structure, stable operation, and convenient replacement. It uses a trumpet-shaped quick-change joint to achieve a detachable connection between the internal cooling tube and the end of the moving component, and ensures that the injection hole in the internal cooling tube can form a stable and accurate connection with the cooling pipe on the moving base, thereby ensuring that the cooling medium can be continuously and stably transmitted from the cooling pipe to the cooling return chamber, and then ensuring the spot cooling effect of the entire core on the die-casting. At the same time, the present application provides an installation groove on the end face of the mold frame away from the mold cavity, and provides an installation shell for accommodating the drive mechanism in the installation groove, so that the staff can directly repair and replace the spot cooling device from the outside of the mold frame without having to lift the mold frame during the repair of the spot cooling structure, thereby improving the repair and replacement efficiency of the spot cooling structure, and has good application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the driving mechanism and spot cooling mechanism of the quick-change device for spot cooling inside the die-casting mold in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the mold frame, drive mechanism, and spot cooling mechanism of the quick-change device for spot cooling inside a die-casting mold according to an embodiment of the present invention;

[0030] Figure 3 2. It is a top view of a quick-change device for spot cooling inside a die-casting mold according to an embodiment of the present invention;

[0031] Figure 4 yes Figure 3 Cross-sectional view at AA;

[0032] Figure 5 yes Figure 3 Cross-sectional view at BB;

[0033] Figure 6 yes Figure 5 A partial enlarged view of point Ⅰ in the middle.

[0034] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0035] 1. Mold frame; 101. Mounting housing; 102. Cover plate; 103. Clamping ring; 104. First T-shaped slide;

[0036] 2. Driving mechanism; 201. Connecting rod; 202. Gear;

[0037] 3. Spot cooling mechanism; 301. Rack; 302. Second T-shaped slider; 303. U-shaped barb; 304. Mounting base; 305. First T-shaped slider; 306. Second T-shaped chute; 307. First stepped hole; 308. Injection channel; 309. Return channel; 310. Quick-change connector; 311. Equalizing ring; 312. Internal cooling tube; 313. Injection hole; 314. Return hole;

[0038] 4. Core needle; 401. Cooling reflux chamber. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] Example:

[0045] See also Figures 1 to 6 The quick-change device and method for spot cooling inside the die-casting mold in the preferred embodiment of the present invention can not only conveniently complete the dismantling of the entire spot cooling structure without lifting the mold, but also conveniently replace and repair the leakage position of the spot cooling pipe structure, thereby simplifying the spot cooling structure maintenance process and significantly improving the maintenance efficiency of the spot cooling structure.

[0046] Specifically, if Figures 1 to 6 As shown in , in a preferred embodiment of the present application, the quick-change device for spot cooling in the die-casting mold is provided on the mold frame 1. Preferably, the mold frame 1 is a movable mold frame 1 or a fixed mold frame 1. A cavity is provided on one end face of the mold frame 1. At the same time, a mounting groove is provided on the end face of the mold frame 1 facing away from the cavity. The notch of the mounting groove is provided on the end face of the mold frame 1. Accordingly, the quick-change device is installed in the mounting groove. In actual use, if the spot cooling in the die-casting mold fails, there is no need to separate the movable mold and the fixed mold. The spot cooling in the die-casting mold can be directly replaced from the mounting groove of the mold frame 1 facing away from the cavity, thereby simplifying the replacement process of the spot cooling in the die-casting mold and improving the replacement efficiency.

[0047] Furthermore, the quick-change device includes a drive mechanism 2 and a spot cooling mechanism 3. The spot cooling mechanism 3 includes a core pin 4 and an internal cooling tube 312. The internal cooling tube 312 is coaxially disposed within the core pin 4, with one end of the core pin 4 disposed on the bottom surface of the mounting slot and the other end extending through the mold frame 1 until it reaches the mold cavity. During actual use, the internal cooling tube 312 circulates a cooling medium, lowering the temperature of the core pin 4. Simultaneously, the core pin 4 rapidly lowers the temperature of the corresponding position of the die-casting in the mold cavity, thereby achieving spot cooling of the die-casting.

[0048] Furthermore, the driving mechanism 2 includes a power component and a moving component, wherein the moving component is arranged in the installation groove, and a quick-change connector 310 is provided at the end of the moving component facing the inner cooling tube 312, and at least one cooling channel is provided in the moving component. During actual use, the quick-change connector 310 provided at the end of the moving component is buckled onto the inner cooling tube 312, so that the cooling pipe can be connected to the inner cooling tube 312, and the cooling medium in the cooling pipe can reduce the temperature of the core needle 4.

[0049] During the actual use of the spot cooling mechanism 3, the cause of leakage is usually damage to the connection between the cooling channel and the internal cooling pipe 312. During the replacement of the cooling channel, the detachable connection of the quick-change joint 310 can conveniently separate the connection between the cooling pipe and the internal cooling pipe 312, thereby facilitating the repair of leakage in the spot cooling structure.

[0050] It is worth noting that in the preferred embodiment of the present application, the mounting groove is in the shape of a cuboid, with the length of the cuboid being the first direction, the width of the cuboid being the second direction, and the height of the cuboid being the third direction. Preferably, the inner cooling tube 312 and the core needle 4 both extend along the third direction.

[0051] Furthermore, in a preferred embodiment of the present application, a gear pair is provided between the power component and the moving component. Specifically, a gear 202 is provided on the rotating end of the power component. Accordingly, the moving component includes a rack 301, which cooperates with the gear 202 on the moving end. Preferably, the rack 301 is coaxially arranged with the core needle 4 along the third direction, so that the power component can drive the moving component to reciprocate along the third direction.

[0052] Further preferably, in the preferred embodiment of the present application, the moving component further includes a mounting base 304. Preferably, the mounting base 304 is slidably arranged on the side wall surface of the mounting groove, and a quick-change connector 310 is provided at the end of the mounting base 304 facing the core needle 4. Specifically, a first T-shaped slider 305 is provided on the side wall surface of the mounting base 304. Correspondingly, a first T-shaped slide 104 adapted to the first T-shaped slider 305 is provided on the side wall surface of the mounting groove. Preferably, one end of the first T-shaped slide 104 extends along the third direction until the end of the first T-shaped slide 104 is located at the notch position of the mounting groove, so that when the quick-change connector 310 provided on the end of the mounting base 304 fails, the staff can conveniently replace the mounting base 304 along the first T-shaped slide 104, thereby significantly improving the repair efficiency of spot cooling leakage.

[0053] In more detail, in a preferred embodiment of the present application, a first stepped hole 307 is provided on the side of the mounting base 304 facing the core needle 4, and the first stepped hole 307 includes a large diameter section and a small diameter section, wherein a quick-change connector 310 with a trumpet-shaped annular structure is embedded in the large diameter section. Preferably, the outer wall surface of the small diameter section of the quick-change connector 310 abuts the inner wall surface of the large diameter section of the first stepped hole 307. Accordingly, the large diameter end of the quick-change connector 310 is a trumpet section, one end of the trumpet section is fixed on the inner side of the small diameter section of the quick-change connector 310, and the trumpet section gradually extends out of the first stepped hole 307 along the third direction.

[0054] Further preferably, a plurality of notches are provided at circumferential intervals on the horn section, and a plurality of outward-folding clamps are formed on the horn section at circumferential intervals. During actual use, the quick-change connector 310 gradually abuts against the outer wall of the inner cooling tube 312. At this time, the outward-folding clamp is deformed to clamp the outer wall of the inner cooling tube 312, thereby fixing the position of the inner cooling tube 312.

[0055] Preferably, a hook extending radially is provided at the end of the outward-turned clamping plate facing the core needle 4 .

[0056] Further preferably, an annular sealing ring is provided between the quick-change connector 310 and the large-diameter section of the stepped opening.

[0057] Furthermore, in a preferred embodiment of the present application, a rack 301 extending in the third direction is slidably provided on the end surface of the mounting base 304 facing away from the first T-shaped chute 104. Specifically, a second T-shaped chute 306 is provided on the end surface of the mounting base 304 facing away from the first T-shaped chute 104, and a second T-shaped slider 302 is provided on the end surface of the rack 301 facing the mounting base 304. Preferably, the length of the second T-shaped slider 302 in the third direction is less than the length of the second T-shaped chute 306 in the third direction.

[0058] Further preferably, in the preferred embodiment of the present application, the moving component also includes a force equalizing ring 311, which is annular. Accordingly, an abutment groove is provided on the force equalizing ring 311. At the same time, the annular side wall surface of the abutment groove extending along the third direction abuts against the outer wall surface of the large diameter end of the first stepped hole 307, and the bottom of the abutment groove along the third direction abuts against the end of the hook.

[0059] More specifically, in a preferred embodiment of the present application, at least one U-shaped barb 303 is provided at the end of the rack 301 facing the core needle 4, and the end of each U-shaped barb 303 abuts against the force-equalizing ring 311. During actual use, the power component drives the rack 301 to move, causing the U-shaped barb 303 to abut against the upper hook of the force-equalizing ring 311. The groove bottom of the force-equalizing ring 311 abuts and lifts the hook, causing the hook to extend outward and deform, releasing the grip of the horn section on the side wall of the inner cooling tube 312, thereby facilitating the removal of the inner cooling tube 312 from the moving component.

[0060] Furthermore, in a preferred embodiment of the present application, in order to ensure that the U-shaped hook 303 can abut against the force equalizing ring 311, the distance between the bottom end surface of the U-shaped hook 303 and the bottom end surface of the force equalizing ring 311 is less than the length between the second T-shaped slider 302 groove and the second T-shaped slider 302 along the third direction, so as to ensure that when the rack 301 slides to the end of the second T-shaped slot 306 along the third direction, the claw of the U-shaped hook 303 can abut against the force equalizing ring 311, thereby enabling the gear 202 at the end of the power component to drive the rack 301 to move, thereby cutting off the claw of the U-shaped hook and the force equalizing ring 311, driving the force equalizing ring 311 to lift the quick-change connector 310, so that the quick-change connector 310 is separated from the outer wall surface of the inner cooling tube 312, so as to realize convenient disassembly of the quick-change connector 310 and the inner cooling tube 312.

[0061] Further preferably, in the preferred embodiment of the present application, the cooling pipe includes an injection channel 308, and accordingly, an injection hole 313 connected to the injection channel 308 is provided on the inner cooling tube 312. At the same time, a blind hole is provided along the third direction in the core needle 4, and the inner cooling tube 312 is coaxially arranged in the blind hole of the core needle 4. The injection hole 313 of the inner cooling tube 312 is connected to the blind hole of the core needle 4, and there is a certain gap between the outer wall surface of the inner cooling tube 312 and the inner wall surface of the blind hole, so that the cooling medium flowing out of the inner cooling tube 312 can flow and fill the entire blind hole of the core needle 4, thereby realizing cooling of the entire core needle 4.

[0062] More specifically, in a preferred embodiment of the present application, the inner cooling tube 312 is shaped as a stepped shaft. Accordingly, a second stepped hole corresponding to the inner cooling tube 312 is provided along the third direction within the core pin 4. Specifically, the larger diameter end of the inner cooling tube 312 is embedded in the larger diameter end of the second stepped hole provided on the core pin 4. Preferably, the larger diameter end of the inner cooling tube 312 and the larger diameter end of the second stepped hole provided on the core pin 4 are in sealed contact. The smaller diameter end of the inner cooling tube 312 is completely embedded in the smaller diameter end of the second stepped hole provided on the core pin 4, and a cooling reflow chamber 401 is formed between the smaller diameter end of the inner cooling tube 312 and the outer wall of the second stepped hole provided on the inner cooling tube 312.

[0063] Furthermore, in a preferred embodiment of the present application, a reflux hole 314 is further provided at the large diameter end of the inner cooling tube 312. The reflux hole 314 extends along a third direction through the large diameter end of the inner cooling tube 312, so that the two ends of the reflux hole 314 are connected to the first stepped hole 307 and the reflux chamber, respectively. In actual use, the cooling medium flows out from the cooling channel and is injected into the reflux chamber after passing through the injection hole 313 to ensure that the reflux chamber can be filled with sufficient cooling medium. During the continuous spot cooling of the die casting by the core needle 4, the temperature of the cooling medium rises, and the heated cooling medium flows from the reflux hole 314 into the first stepped hole 307, thereby forming a cooling medium circulation loop, thereby ensuring that the temperature of the core needle 4 can be kept relatively stable throughout the spot cooling process of the die casting.

[0064] Further preferably, in a preferred embodiment of the present application, a plurality of cooling pipes are provided at the small-diameter end of the first stepped hole 307 along the first direction or the second direction, penetrating the side wall of the mounting base 304. The cooling pipes are connected to the internal cooling pipe 312, ensuring that the cooling medium in the cooling pipes can flow into the internal cooling pipe 312. Specifically, the cooling pipes include an injection channel 308 and a return channel 309. The injection channel 308 is an L-shaped pipe, one end of which extends along the first direction and penetrates the side wall of the mounting base 304. The other end of the L-shaped pipe is located in the first stepped hole 307 and extends along the third direction until it is connected to the injection hole 313.

[0065] In more detail, in a preferred embodiment of the present application, a groove extending from a third direction is provided on the large diameter end of the internal cooling tube 312. At the same time, in the groove, a hollow tube body is provided at the end of the injection hole 313, and the hollow tube body is embedded in the injection channel 308. Preferably, the outer wall surface of the hollow tube body is abutted and sealed against the inner wall surface of the injection channel 308 to improve the sealing of the connection between the two.

[0066] Furthermore, in a preferred embodiment of the present application, the return channel 309 also extends along the first direction and penetrates the sidewall of the mounting base 304, allowing the return channel 309 to communicate with the first stepped hole 307. Accordingly, in the groove of the inner cooling tube 312, the return hole 314 extends along the third direction, allowing the return hole 314 to communicate with the bottom end surface of the groove and the cooling return chamber 401, ensuring that the high-temperature cooling medium can flow from the return chamber into the first stepped hole 307 through the return hole 314, and the high-temperature cooling medium in the first stepped hole 307 then flows out of the return channel 309.

[0067] Further preferably, in a preferred embodiment of the present application, the core pin 4 is embedded in the bottom end surface of the mounting groove. At the same time, a clamping ring 103 is provided on the large-diameter end of the core pin 4. The clamping ring 103 abuts against the top end surface of the core pin 4 to secure the core pin 4 to the bottom end surface of the mounting groove. Preferably, the clamping ring 103 is threadedly fixed to the bottom end of the mounting groove.

[0068] Furthermore, in a preferred embodiment of the present application, the power component further includes a connecting rod 201 and a rotary motor. One end of the connecting rod 201 is fixedly connected to the output shaft of the rotary motor, and the other end of the connecting rod 201 extends in a first direction to form a rotary end, and a gear 202 is provided on the rotary end. Preferably, the connecting rod 201 includes a first rod body and a second rod body, and the first rod body and the second rod body are hinged or detachably connected to each other, so that when the mounting base 304 is replaced, the connecting rod 201 can be prevented from affecting the replacement of the mounting base 304.

[0069] Furthermore, in a preferred embodiment of the present application, a mounting housing 101 is provided in the mounting groove, and the drive mechanism 2 is installed in the mounting housing 101. Preferably, a detachably connected cover plate 102 is provided at the end of the mounting housing 101 away from the cavity to facilitate replacement and maintenance of the spot cooling structure.

[0070] Furthermore, in a preferred embodiment of the present application, a quick-change method for spot cooling inside a die-casting mold is also disclosed, which is implemented using the quick-change device for spot cooling inside a die-casting mold described above, and specifically includes the following steps:

[0071] The power component drives the moving component to move away from the cavity until the quick-change connector 310 is separated from the end of the inner cooling tube 312.

[0072] Remove the driving mechanism 2 from the installation slot and replace the moving component.

[0073] Reinstall the replaced moving component into the mounting slot.

[0074] The power component drives the moving component to move toward the cavity until the quick-change connector 310 is reconnected to the end of the inner cooling tube 312 .

[0075] The quick-change device and method for spot cooling inside the die-casting mold of the present invention have a simple structure, stable operation, and convenient replacement. It uses a trumpet-shaped quick-change joint 310 to achieve a detachable connection between the internal cooling tube 312 and the end of the moving component, and ensures that the injection hole 313 in the internal cooling tube 312 can form a stable and accurate connection with the cooling pipe on the moving base, thereby ensuring that the cooling medium can be continuously and stably transmitted from the cooling pipe to the cooling return chamber 401, and then ensuring the spot cooling effect of the entire core needle 4 on the die-casting. At the same time, the present application provides an installation groove on the end face of the mold frame 1 away from the mold cavity, and provides an installation shell 101 for accommodating the drive mechanism 2 in the installation groove, so that when the staff repairs the spot cooling structure, they do not need to lift the mold frame 1, and can directly repair and replace the spot cooling device from the outside of the mold frame 1, thereby improving the repair and replacement efficiency of the spot cooling structure, and has good application prospects and promotion value.

[0076] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-change device for spot cooling inside a die-casting mold, which is arranged on a mold frame, and a mold cavity is arranged on one end surface of the mold frame; characterized in that: The mold frame is provided with a mounting groove on the end surface facing away from the mold cavity; the quick change device is installed in the mounting groove; The quick-change device includes a driving mechanism and a spot cooling mechanism; The spot cooling mechanism includes a core pin and an inner cooling tube, wherein the inner cooling tube is coaxially arranged inside the core pin, one end of the core pin is arranged on the bottom surface of the mounting groove, and the other end of the core pin passes through the mold frame and reaches the mold cavity; The driving mechanism includes a power component and a moving component, the moving component is arranged in the mounting groove, and a quick-change joint is provided at the end of the moving component facing the inner cooling tube, the quick-change joint is detachably connected to the end of the inner cooling tube; the power component cooperates with the moving component to drive the moving component to move; A gear pair is provided between the power component and the motion component, a gear is provided at the rotating end of the power component, and the motion component includes a rack meshing with the gear; At least one cooling pipe is provided in the moving component, and the cooling pipe is communicated with the inner cooling pipe and is used for introducing a cooling medium into the inner cooling pipe.

2. The quick-change device for spot cooling inside the die casting mold according to claim 1, wherein: The moving component is slidably fitted into the mounting groove.

3. The quick-change device for spot cooling inside the die casting mold according to claim 2, wherein: The moving component further includes a mounting base slidably connected to the mounting groove, and the rack is slidably arranged on the mounting base.

4. The quick-change device for spot cooling inside the die casting mold according to claim 3, wherein: The quick-change connector is a trumpet-shaped ring structure, and a plurality of notches are provided on the large-diameter end of the trumpet-shaped ring structure along the circumferential direction.

5. The quick-change device for spot cooling inside the die casting mold according to claim 4, wherein: An annular force equalizing ring is provided on the large diameter end of the quick-change joint. An abutment groove is provided on the force equalizing ring, and the large diameter end of the quick-change joint abuts in the abutment groove.

6. The quick-change device for spot cooling inside the die casting mold according to claim 5, wherein: The small diameter end of the quick-change connector abuts the mounting base, and a U-shaped hook is provided at the end of the rack facing the cavity. The U-shaped hook is configured to abut or disengage from the force equalizing ring as the rack moves.

7. The quick-change device for spot cooling inside a die casting mold according to any one of claims 1 to 6, wherein: The cooling pipeline includes an injection pipeline and a return pipeline. The injection pipeline is connected to the inner cooling pipe, and the return pipeline is used to lead out the high-temperature cooling medium.

8. The quick-change device for spot cooling inside a die casting mold according to any one of claims 1 to 6, wherein: A mounting shell is arranged in the mounting groove, and a detachable cover plate is arranged on the end surface of the mounting shell facing away from the cavity.

9. A quick-change method for spot cooling inside a die casting mold, used for replacing spot cooling inside a die casting mold, characterized in that: The method is implemented by using a quick-change device for spot cooling inside a die casting mold according to any one of claims 1 to 8, comprising the following steps: The power component drives the moving component to move away from the mold cavity until the quick-change connector is separated from the end of the inner cooling tube; Remove the driving mechanism from the mounting slot and replace the moving component; Reinstalling the replaced moving component into the installation slot; The power component drives the moving component to move toward the mold cavity until the quick-change connector is re-engaged with the end of the inner cooling tube.

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