Die-casting die for valve cover machining

Abstract

The die-casting die for valve deck machining comprises a fixed die with a die cavity, a movable die with a feeding pipe, a guiding system and a cooling system, and the cooling system comprises a cooling ring cavity which is arranged in the fixed die and surrounds the die cavity; the spraying ring shell is rotationally mounted on the outer peripheral wall of the cooling ring cavity through a driving device, a guide mechanism is arranged between the outer peripheral wall and the cooling ring cavity, and a plurality of spraying holes are formed in the inner peripheral wall at intervals; in daily use, by the adoption of the technical scheme, the water diversion device supplies external cooling water into the spraying ring shell and sprays the external cooling water to the peripheral wall of the inner side of the cooling ring cavity from all the spraying holes, meanwhile, the driving device acts to drive the spraying ring shell to rotate in the circumferential direction and ascend and descend in a reciprocating mode at the same time, and therefore the cooling effect is achieved. And multiple cooling water flows can be sprayed on the peripheral wall of the inner side of the cooling ring cavity in a three-dimensional manner, so that the cooling efficiency of the fixed mold is improved.

Description

Technical Field

[0001] The invention relates to the field of valve cover die-casting, in particular to a die-casting mold for valve cover processing. Background Art

[0002] The valve cover die-casting mold is a special mold used for die-casting parts such as valve covers. Die casting is a molding method that quickly injects liquid or semi-liquid metal into the die-casting mold cavity under high pressure, and obtains the casting after pressure maintenance, cooling and solidification.

[0003] The die-casting mold usually includes a fixed mold part, a movable mold part, a guide mechanism and a cooling system. For example, the Chinese invention patent with the announcement number CN116511461B is a surveillance camera aluminum alloy shell die-casting mold, which forms a mold body through the cooperation between the mold body and the pressure plate, pushes the mold body downward through the telescopic rod, and completes the extrusion of the feed component, so that the material inside the feed component enters the mold body, and the aluminum alloy shell of the surveillance camera is formed;

[0004] In order to carry out normal die-casting production, the mold temperature must be kept basically constant. The existing cooling system is mostly water-cooled. A pipeline is opened in the mold to allow cooling water to flow through the pipeline to cool the mold. However, the cooling water flows toward the outlet of the pipeline, the higher the temperature. The defects are:

[0005] 1. The mold cannot be cooled evenly, and the cooling effect is poor;

[0006] 2. Various substances in the cooling water will gradually accumulate in the cooling pipeline during a long period of circulation, affecting the cooling effect of the cooling water on the mold. Summary of the invention

[0007] The present invention aims to solve one of the technical problems existing in the prior art.

[0008] The present application provides a die-casting mold for valve cover processing, comprising a fixed mold with a mold cavity, a movable mold with a feed pipe, a guide system and a cooling system, wherein the cooling system comprises:

[0009] A cooling ring cavity is arranged in the fixed mold and surrounds the mold cavity;

[0010] A spray ring shell is rotatably mounted on the outer peripheral wall of the cooling ring cavity through a driving device, a guide mechanism is provided between the outer peripheral wall and the cooling ring cavity, and a plurality of spray holes are provided at intervals on the inner peripheral wall;

[0011] The water diversion device is used to connect the inner cavity of the spray ring shell with the external water supply system.

[0012] The water diversion device includes:

[0013] A bottom ring, which is rotatably mounted on the bottom of the spray ring housing;

[0014] A fixed pipe, which is fixed at the bottom of the cooling ring cavity and has its lower end connected to an external water supply system;

[0015] The floating pipe is installed in the fixed pipe in a lifting and sliding manner, the upper end of which is fixedly connected to the bottom ring, and the inner cavity of which is connected to the inner cavity of the spray ring shell;

[0016] The spring is sleeved on the outside of the fixed tube, and the upper end and the lower end of the spring are respectively pressed against the bottom surface of the bottom ring and the top surface of the fixed tube.

[0017] The guiding agencies include:

[0018] A wave annular groove is disposed around the outer peripheral wall of the cooling annular cavity;

[0019] A plurality of sliding blocks are fixedly arranged at intervals on the outer peripheral wall of the spray ring shell and are all slidably matched with the wave ring groove.

[0020] The diameter of one end of the spray hole away from the inner cavity of the spray ring shell is smaller than that of the other end.

[0021] The cooling system also includes:

[0022] An external thread is provided on the inner peripheral wall of the cooling ring cavity;

[0023] A lifting sleeve is sleeved on the inner peripheral wall of the cooling ring cavity, and the inner peripheral wall is provided with an internal thread engaged with the external thread;

[0024] Wherein, the driving device can drive the lifting sleeve to rotate.

[0025] The drive unit includes:

[0026] An inner gear column is rotatably mounted in the cooling ring cavity and is transmission-connected to the lifting sleeve via an inner gear ring;

[0027] The outer gear column is rotatably mounted in the cooling ring cavity and is drivingly connected to the spray ring shell through the outer gear ring;

[0028] A driving gear, which is used to mesh with the inner gear column or the outer gear column and is driven to rotate by the motor;

[0029] The switching mechanism is used to control the movement of the driving gear so that it meshes with the inner gear column or the outer gear column for transmission.

[0030] The switching mechanism includes:

[0031] An arc groove is arranged at the bottom of the cooling ring cavity and is located between the inner tooth column and the outer tooth column;

[0032] The swing arm, the motor is fixed at one end of the swing arm, and the other end is rotatably connected to the bottom surface of the fixed mold through a rotating shaft concentric with the arc groove;

[0033] A push-swing mechanism, used for pushing the swing arm to rotate around the rotating shaft;

[0034] The output shaft of the motor movably passes through the arc groove and extends into the cooling ring cavity, and is fixedly connected with the driving gear.

[0035] The push-swing mechanism includes:

[0036] A pair of fixed frames, fixed on the bottom surface of the fixed mold;

[0037] A push rod, which is pushed by an adjustment cylinder and slidably mounted on a pair of fixed frames;

[0038] A notch is provided on the top surface of the push rod, and the bottom surface thereof slides and rubs with the bottom surface of the swing arm;

[0039] A guide groove, which is arranged in the middle of the swing arm;

[0040] The guide block is fixedly arranged in the middle of the bottom surface of the notch and is slidably matched with the guide groove.

[0041] The guidance system includes:

[0042] A top plate, which is fixed on the top of the fixed mold through a pair of guide vertical rods;

[0043] A pair of sliding holes, used to enable the movable mold to be slidably installed between a pair of guide vertical rods;

[0044] A pair of lifting cylinders are fixed on the top of the top plate, and the pistons pass through the top plate and are fixedly connected to the top of the movable mold.

[0045] Also disclosed is an operating method for a die-casting mold for valve cover processing, comprising the following steps:

[0046] S1, operate the switching mechanism to make the driving gear mesh with the outer gear column;

[0047] S2, start the external water supply system to supply cooling water into the spray ring shell through the water diversion device, so that the cooling water can be sprayed onto the external threads of the inner peripheral wall of the cooling ring cavity through each spray hole;

[0048] S3, the motor rotates, the driving gear, the outer gear ring and the spray ring shell rotate, and at the same time the spray ring shell rises and falls in the cooling ring cavity, spraying the inner peripheral wall of the cooling ring cavity in three dimensions;

[0049] S4, stop the motor and the external water supply system, operate the switching system, and make the driving gear mesh with the internal gear column;

[0050] S5, start the motor, the driving gear and the lifting sleeve rotate, the internal thread and the external thread cooperate, and the lifting sleeve rises;

[0051] S6, the motor reverses, the driving gear and the lifting sleeve reverse, the internal thread and the external thread cooperate, and the lifting sleeve descends.

[0052] The beneficial effects of the present invention are as follows:

[0053] 1. Through the arrangement of cooling ring cavity, spray ring shell, driving device, several spray holes, bottom ring, fixed pipe, Dongguan, spring, wave ring groove and several sliders, the cooling water flow is evenly distributed on the inner wall of the cooling ring cavity in a three-dimensional spraying manner to improve the cooling effect;

[0054] 2. Through the arrangement of the external thread, lifting sleeve, internal thread and driving device, it is convenient to clean the substances attached to the inner wall of the cooling ring cavity, so that the cooling water can directly contact the external thread and the inner wall of the cooling ring cavity, so that the cooling system can be self-cleaning and maintain a good cooling effect for a long time without maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A three-dimensional diagram (complete) of a die-casting mold for valve cover processing in an embodiment of the present application;

[0056] Figure 2 This is a three-dimensional diagram of a die-casting mold for valve cover processing in an embodiment of the present application (the front side of the fixed mold is cut open);

[0057] Figure 3 This is a three-dimensional diagram of the driving device in the embodiment of the present application;

[0058] Figure 4 This is a three-dimensional view of the fixed mold in the embodiment of the present application cut through from the bottom;

[0059] Figure 5 This is a three-dimensional diagram of the spray ring shell and the bottom ring in the embodiment of the present application;

[0060] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0061] Reference numerals

[0062] 1-mold cavity, 2-fixed mold, 3-feed pipe, 4-movable mold, 5-guide system, 6-cooling system, 61-cooling ring cavity, 62-spray ring shell, 63-spray hole, 64-water diversion device, 641-bottom ring, 642-fixed pipe, 643-floating pipe, 644-spring, 65-external thread, 66-lifting sleeve, 67-internal thread, 7-guiding mechanism, 71-wave ring groove, 72-slider, 8-driving device, 81-inner tooth column, 82-inner tooth ring, 83-outer tooth column, 84-outer tooth ring, 85-driving gear, 86-motor, 9-switching mechanism, 91-arc groove, 92-swing arm, 93-push swing mechanism, 931-fixed frame, 932-push rod, 933-missing groove, 934-guide groove, 935-guide block. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0064] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0065] In the following, in conjunction with the accompanying drawings, a die-casting mold for valve cover processing provided in an embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0066] Embodiment 1:

[0067] like Figures 1 to 6 As shown, an embodiment of the present application provides a die-casting mold for valve cover processing, including a fixed mold 2 with a mold cavity 1, a movable mold 4 with a feed pipe 3, a guide system 5 and a cooling system 6, the cooling system 6 includes a cooling ring cavity 61, which is arranged in the fixed mold 2 and surrounds the outside of the mold cavity 1; a spray ring shell 62, which is rotatably installed on the outer peripheral wall of the cooling ring cavity 61 through a driving device 8, a guiding mechanism 7 is provided between the outer peripheral wall and the cooling ring cavity 61, and a plurality of spray holes 63 are provided on the inner peripheral wall at intervals; a water diversion device 64, which is used to connect the inner cavity of the spray ring shell 62 with the external water supply system.

[0068] Furthermore, the water diversion device 64 includes a bottom ring 641, which is rotatably installed at the bottom of the spray ring shell 62; a fixed pipe 642, which is fixed at the bottom of the cooling ring cavity 61, and the lower end of which is connected to the external water supply system; a floating pipe 643, which is installed in the fixed pipe 642 for lifting and sliding, the upper end of which is fixed to the bottom ring 641, and the inner cavity is connected to the inner cavity of the spray ring shell 62; a spring 644, which is sleeved on the outside of the fixed pipe 642, and the upper and lower ends are respectively pressed against the bottom surface of the bottom ring 641 and the top surface of the fixed pipe 642.

[0069] Furthermore, the guide mechanism 7 includes a wave annular groove 71 which is circumferentially arranged on the outer peripheral wall of the cooling annular cavity 61 ; a plurality of sliders 72 are fixedly arranged on the outer peripheral wall of the spray ring shell 62 at intervals and all slideably cooperate with the wave annular groove 71 .

[0070] Preferably, the diameter of the spray hole 63 at one end away from the inner cavity of the spray ring shell 62 is smaller than that at the other end.

[0071] Furthermore, the guide system 5 includes a top plate 51, which is fixed to the top of the fixed mold 2 through a pair of guide vertical rods 52; a pair of sliding holes 53, used to slide the movable mold 4 between the pair of guide vertical rods 52; a pair of lifting cylinders 54, which are fixed to the top of the top plate 51, and the pistons pass through the top plate 51 and are fixed to the top of the movable mold 4.

[0072] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the external water supply system supplies coolant into the fixed pipe 642, the coolant flows through the floating pipe 643 and the inner cavity of the spray ring shell 62, and is sprayed from each spray hole 63 to the inner circumferential wall of the cooling ring cavity 61. The driving device 8 simultaneously drives the spray ring shell 62 to rotate, and each slider 72 slides in the corresponding wave ring groove 71, so that the spray ring shell 62 reciprocates and rises and falls while rotating. The spring 644 always provides an upward thrust to the bottom ring 641, so that the bottom ring 641 maintains a seal with the bottom of the spray ring shell 62. The relative position of the floating pipe 643 and the spray ring shell 62 changes with the rotation of the spray ring shell 62, so that the temperature of each place in the spray ring shell 62 is the same, the temperature difference of the cooling water sprayed from each spray port is small, and the cooling of the inner circumferential wall of the cooling ring cavity 61 is uniform.

[0073] Embodiment 2:

[0074] like Figures 1 to 6 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the cooling system 6 also includes:

[0075] An external thread 65, which is provided on the inner peripheral wall of the cooling ring cavity 61;

[0076] The lifting sleeve 66 is sleeved on the inner peripheral wall of the cooling ring cavity 61 , and the inner peripheral wall is provided with an internal thread 67 engaged with the external thread 65 . The driving device 8 can drive the lifting sleeve 66 to rotate.

[0077] Furthermore, the driving device 8 includes an inner gear column 81, which is rotatably installed in the cooling ring cavity 61 and is connected to the lifting sleeve 66 through the inner gear ring 82; an outer gear column 83, which is rotatably installed in the cooling ring cavity 61 and is connected to the spray ring shell 62 through the outer gear ring 84; a driving gear 85, which is used to engage with the inner gear column 81 or the outer gear column 83 and is driven to rotate by the motor 86; a switching mechanism 9, which is used to control the movement of the driving gear 85 so that it engages with the inner gear column 81 or the outer gear column 83 for transmission.

[0078] Also disclosed is an operating method for a die-casting mold for valve cover processing, comprising the following steps:

[0079] S1, operate the switching mechanism 9 to make the driving gear 85 mesh with the outer tooth column 83;

[0080] S2, start the external water supply system to supply cooling water into the spray ring shell 62 through the water diversion device 64, so that the cooling water can be sprayed onto the external threads 65 on the inner peripheral wall of the cooling ring cavity 61 through each spray hole 63;

[0081] S3, the motor 86 rotates, the driving gear 85, the outer gear ring 84 and the spray ring shell 62 rotate, and at the same time the spray ring shell 62 rises and falls in the cooling ring cavity 61, and the inner peripheral wall of the cooling ring cavity 61 is sprayed three-dimensionally;

[0082] S4, stop the motor 86 and the external water supply system, operate the switching system, and make the driving gear 85 mesh with the internal gear column 81;

[0083] S5, start the motor 86, the driving gear 85 and the lifting sleeve 66 rotate, the internal thread 67 and the external thread 65 are matched with each other, and the lifting sleeve 66 rises;

[0084] S6, the motor 86 reverses, the driving gear 85 and the lifting sleeve 66 reverse, the internal thread 67 and the external thread 65 cooperate with each other, and the lifting sleeve 66 descends.

[0085] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when it is necessary to clean the inner peripheral wall of the cooling ring cavity 61, the switching mechanism 9 controls the driving gear 85 to mesh with the inner tooth column 81 for transmission, and the motor 86 drives the driving gear 85 to drive the inner tooth column 81 to rotate, thereby driving the lifting sleeve 66 to rotate, and the internal thread 67 cooperates with the external thread 65 to make the lifting sleeve 66 rise and fall on the inner peripheral wall of the cooling ring cavity 61, scrape off the impurities attached to the external thread 65, and then the motor 86 reverses to make the lifting sleeve 66 descend, and the switching mechanism 9 controls the driving gear 85 to separate from the internal tooth column 81 and mesh with the external tooth column 83 for transmission, and the motor 86 drives the driving gear 85 to drive the external tooth column 83 to rotate, thereby driving the spray ring shell 62 to rotate and rise and fall at the same time, and the external water supply system operates, so that cooling water is sprayed from each spray hole 63 to flush the external thread 65, and the cooling water in the cooling ring cavity 61 is collected at the bottom and discharged from the arc groove 91.

[0086] Embodiment 3:

[0087] like Figures 1 to 6 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the switching mechanism 9 includes an arc groove 91, which is arranged at the bottom of the cooling ring cavity 61 and is located between the inner tooth column 81 and the outer tooth column 83; a swing arm 92, the motor 86 is fixed at one end thereof, and the other end is rotatably connected to the bottom surface of the fixed mold 2 through a rotating shaft concentric with the arc groove 91; a push-swing mechanism 93, which is used to push the swing arm 92 to rotate around the rotating shaft, and the output shaft of the motor 86 movably passes through the arc groove 91 and extends into the cooling ring cavity 61, and is fixedly connected to the driving gear 85.

[0088] Furthermore, the push-and-swing mechanism 93 includes a pair of fixed frames 931, which are fixed on the bottom surface of the fixed mold 2; a push rod 932, which is pushed by the adjustment cylinder and slidably installed in the pair of fixed frames 931; a slot 933, which is arranged on the top surface of the push rod 932, and the bottom surface slides and rubs with the bottom surface of the swing arm 92; a guide groove 934, which is arranged in the middle of the swing arm 92; and a guide block 935, which is fixed in the middle of the bottom surface of the slot 933 and slidably cooperates with the guide groove 934.

[0089] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when it is necessary to adjust the engagement of the driving gear 85 with the inner tooth column 81 or the outer tooth column 83, the cylinder action is adjusted to push the push rod 932 to slide in a pair of fixed frames 931, and the guide block 935 slides in the guide groove 934 while pushing the swing arm 92 to rotate around the rotating shaft, and the driving gear 85 at the other end can be disengaged from the engagement of the inner tooth column 81 with the outer tooth column 83 or disengaged from the engagement of the outer tooth column 83 with the inner tooth column 81, thereby controlling the independent operation of the various functions of the cooling system 6.

[0090] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0091] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A die-casting mold for valve cover processing, comprising a fixed mold (2) with a mold cavity (1), a movable mold (4) with a feed pipe (3), a guide system (5) and a cooling system (6), characterized in that: The cooling system (6) comprises: A cooling annular cavity (61) is arranged in the fixed mold (2) and surrounds the mold cavity (1); A spray ring shell (62) is rotatably mounted on the outer peripheral wall of the cooling ring cavity (61) through a driving device (8), a guide mechanism (7) is provided between the outer peripheral wall and the cooling ring cavity (61), and a plurality of spray holes (63) are provided at intervals on the inner peripheral wall; A water diversion device (64) is used to connect the inner cavity of the spray ring shell (62) with an external water supply system.

2. A die-casting mold for valve cover processing according to claim 1, characterized in that: The water diversion device (64) comprises: A bottom ring (641) is rotatably mounted on the bottom of the spray ring housing (62); A fixed pipe (642), which is fixedly arranged at the bottom of the cooling ring cavity (61), and the lower end of which is connected to an external water supply system; A floating pipe (643) is installed in the fixed pipe (642) in a lifting and sliding manner, with its upper end fixedly connected to the bottom ring (641) and its inner cavity communicating with the inner cavity of the spray ring shell (62); The spring (644) is sleeved on the outside of the fixed tube (642), and the upper end and the lower end are respectively pressed against the bottom surface of the bottom ring (641) and the top surface of the fixed tube (642).

3. The die-casting mold for valve cover processing according to claim 1, characterized in that: The guiding mechanism (7) comprises: A wave annular groove (71) is disposed around the outer peripheral wall of the cooling annular cavity (61); A plurality of sliding blocks (72) are fixedly arranged at intervals on the outer peripheral wall of the spray ring shell (62) and are all slidably matched with the wave ring groove (71).

4. The die-casting mold for valve cover processing according to claim 1, characterized in that: The diameter of one end of the spray hole (63) away from the inner cavity of the spray ring shell (62) is smaller than that of the other end.

5. The die-casting mold for valve cover processing according to claim 1, characterized in that: The cooling system (6) further comprises: An external thread (65) is arranged on the inner peripheral wall of the cooling ring cavity (61); A lifting sleeve (66) is sleeved on the inner peripheral wall of the cooling ring cavity (61), and the inner peripheral wall is provided with an internal thread (67) meshing with the external thread (65); Wherein, the driving device (8) can drive the lifting sleeve (66) to rotate.

6. A die-casting mold for valve cover processing according to claim 5, characterized in that: The driving device (8) comprises: An inner gear column (81) is rotatably mounted in the cooling ring cavity (61) and is transmission-connected to the lifting sleeve (66) via an inner gear ring (82); An external tooth column (83) is rotatably mounted in the cooling ring cavity (61) and is transmission-connected to the spray ring housing (62) via an external tooth ring (84); A driving gear (85), which is used to mesh with the inner tooth column (81) or the outer tooth column (83) and is driven to rotate by a motor (86); A switching mechanism (9) is used to control the movement of the driving gear (85) so that it meshes with the inner tooth column (81) or the outer tooth column (83) for transmission.

7. A die-casting mold for valve cover processing according to claim 6, characterized in that: The switching mechanism (9) comprises: An arc groove (91) is arranged at the bottom of the cooling ring cavity (61) and is located between the inner tooth column (81) and the outer tooth column (83); A swing arm (92), the motor (86) being fixedly mounted at one end thereof, and the other end being rotatably connected to the bottom surface of the fixed mold (2) via a rotating shaft concentric with the arc groove (91); A push-swing mechanism (93), used for pushing the swing arm (92) to rotate around the rotation axis; The output shaft of the motor (86) movably passes through the arc groove (91) and extends into the cooling ring cavity (61), and is fixedly connected to the driving gear (85).

8. The die-casting mold for valve cover processing according to claim 7, characterized in that: The push-and-swing mechanism (93) comprises: A pair of fixed frames (931) fixedly mounted on the bottom surface of the fixed mold (2); A push rod (932), which is pushed by an adjustment cylinder and slidably installed in a pair of fixed frames (931); A notch (933) is provided on the top surface of the push rod (932), and the bottom surface thereof slides and rubs against the bottom surface of the swing arm (92); A guide groove (934) disposed in the middle of the swing arm (92); The guide block (935) is fixedly arranged at the middle part of the bottom surface of the notch (933) and is slidably matched with the guide groove (934).

9. The die-casting mold for valve cover processing according to claim 1, characterized in that: The guiding system (5) comprises: A top plate (51) is fixed on the top of the fixed mold (2) via a pair of guide vertical rods (52); A pair of sliding holes (53) for enabling the movable mold (4) to be slidably mounted between a pair of guide vertical rods (52); A pair of lifting cylinders (54) are fixedly arranged on the top of the top plate (51), and the pistons both pass through the top plate (51) and are fixedly connected to the top of the movable mold (4).

10. An operating method for a die-casting mold for valve cover processing according to claim 6, characterized in that: The following steps are involved: S1, operating the switching mechanism (9) to make the driving gear (85) mesh with the outer tooth column (83); S2, start the external water supply system to supply cooling water into the spray ring shell (62) through the water diversion device (64), so that the cooling water can be sprayed from each spray hole (63) onto the external thread (65) on the inner peripheral wall of the cooling ring cavity (61); S3, the motor (86) rotates, the driving gear (85), the outer gear ring (84) and the spray ring shell (62) rotate, and at the same time the spray ring shell (62) rises and falls in the cooling ring cavity (61), spraying the inner peripheral wall of the cooling ring cavity (61) in three dimensions; S4, stop the motor (86) and the external water supply system, operate the switching system, and make the driving gear (85) mesh with the inner gear column (81); S5, start the motor (86), the driving gear (85) and the lifting sleeve (66) rotate, the internal thread (67) and the external thread (65) are matched in transmission, and the lifting sleeve (66) rises; S6, the motor (86) rotates in the reverse direction, the driving gear (85) and the lifting sleeve (66) rotate in the reverse direction, the internal thread (67) and the external thread (65) are in transmission cooperation, and the lifting sleeve (66) descends.

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