Die-casting die for automotive upholstery

Abstract

The invention discloses a die-casting die for automotive upholstery, and relates to the technical field of automotive upholstery casting. A die-casting die for automotive upholstery comprises a left die and a right die, a guide sleeve is mounted on the surface of the periphery of the top of the left die in an embedded mode, a pouring sleeve is arranged on one side face of the right die, a guide column corresponding to the guide sleeve is mounted on the other side face of the right die, and the die-casting die further comprises an air collection cavity formed in the outer portion of the guide sleeve and formed in the left die; the two groups of exhaust holes are annularly distributed in the side wall of the guide sleeve; the extrusion part and the two groups of exhaust holes are arranged in the guide sleeve, the guide column is inserted into the guide sleeve at the initial stage of die assembly, one end of the guide column is in contact with the extrusion part, and a step-by-step exhaust mode of initial single-hole exhaust and multi-hole cooperative exhaust after stroke increase is adopted, so that on one hand, reverse injection of external air is avoided; on the other hand, the exhaust rate is self-adaptively adjusted, and the risk of scorching of the inner wall of the guide sleeve is eliminated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile trim casting, and particularly relates to a die-casting die for automobile interior trim. BACKGROUND

[0002] In the production process of automobile interior trim, the die-casting process is widely used due to its high efficiency and precision. At present, the commonly used die-casting die is mainly composed of left and right half dies, and the two are positioned by a guide column and a guide sleeve. In order to ensure that the air in the cavity can be smoothly discharged during the closing process, an exhaust groove is usually arranged at the connecting and fixing position of the guide sleeve and the die.

[0003] However, the existing exhaust groove design is generally simple, and a straight line type or a shallow groove type structure is usually adopted, which has the following significant problems: first, the exhaust passage has a small cross-sectional area and a single path, which leads to low exhaust efficiency and cannot effectively discharge the gas in the cavity in time; second, during the die-casting process, due to the unreasonable design of the exhaust groove, the gas in the cavity cannot be fully discharged, resulting in the formation of a high-pressure area in the local area, which causes the burning defect; at the same time, the back pressure generated by the residual gas increases the closing resistance, which affects the closing precision, which not only affects the appearance quality and mechanical properties of the product, but also causes corrosion and damage to the guide structure such as the guide column and the guide sleeve, shortens the service life of the die, and increases the production cost and maintenance difficulty. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a die-casting die for automobile interior trim which can overcome the above problems or at least partially solve the above problems.

[0005] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is as follows: a die-casting die for automobile interior trim, comprising a left die and a right die, a guide sleeve is embedded and installed on the top four peripheral surfaces of the left die, a pouring sleeve is arranged on one side surface of the right die, and a guide column is installed on the other side surface of the right die corresponding to the guide sleeve, further comprising: a gas collecting cavity arranged outside the guide sleeve and opened in the left die; two groups of exhaust holes arranged in a ring shape on the side wall of the guide sleeve; an extrusion piece installed in the guide sleeve; a movable connecting ring arranged at the inlet end of the guide sleeve; during die casting, the guide column is inserted into the guide sleeve to contact the extrusion piece, so that the two groups of exhaust holes are gradually opened for exhaust, and the connecting ring is driven to run synchronously by the displacement of the extrusion piece, thereby reducing the contact distance between the connecting ring and the surface of the guide column; at the same time, the connecting ring is energized by the inflation member during each downward movement of the extrusion piece, and the gas is sprayed out from the inlet end of the guide sleeve after the opening operation.

[0006] Preferably, the extrusion piece comprises a connecting disc arranged in the guide sleeve, a connecting plate is fixedly connected around the connecting disc, the connecting plate is slidingly connected in the second limiting port, the second limiting port is arranged on the side wall of the guide sleeve, a first limiting port is arranged on the inner wall of the guide sleeve, the first limiting port is communicated with the second limiting port, and the first limiting port is communicated with the exhaust hole.

[0007] Preferably, a blocking ring is slidingly connected in the first limiting port, one end of the blocking ring is fixedly connected with the connecting plate, the bottom of the connecting disc is fixedly connected with a reset spring, and the end of the reset spring is fixedly connected in the guide sleeve.

[0008] Preferably, one end of one of the connecting plates is fixedly connected with a connecting rod, a second opening is arranged on the side wall of the guide sleeve, one end of the connecting rod penetrates through the gas collecting cavity and the second opening and is attached to one side of the connecting ring, a limiting block is fixedly connected to the surface of the connecting rod, a telescopic spring is fixedly connected to one side of the limiting block, and the end of the telescopic spring is fixedly connected with the connecting ring.

[0009] Preferably, a cleaning brush is arranged on the inner wall of the connecting ring, a sliding seat is arranged on the outer wall of the connecting ring, the sliding seat is slidingly connected on the sliding rail, the sliding rail is arranged on the inner wall of the fixing ring, and the fixing ring is embeddedly arranged on the inner wall of the guide sleeve.

[0010] Preferably, a limiting sleeve is fixedly connected to the inner wall of the fixing ring, a first opening is arranged on the surface of the fixing ring and the guide sleeve, and the connecting rod slidingly penetrates in the first opening.

[0011] Preferably, the inflation piece comprises a cavity arranged in the connecting ring, a plurality of jet heads are annularly arranged on the top of the connecting ring, a telescopic hose is arranged in the connecting rod, one end of the telescopic hose is fixedly connected with the connecting ring, and an extrusion plate is fixedly connected to the bottom of the connecting rod.

[0012] Preferably, a T-shaped piece is fixedly connected to the bottom of the extrusion plate, a connecting barrel is slidingly connected to one end of the T-shaped piece, the other end of the telescopic hose penetrates in the connecting rod, the extrusion plate and the T-shaped piece, a one-way valve is arranged on one end of the telescopic hose, a plurality of safety valves are arranged on the jet heads, the connecting barrel is arranged in the gas collecting cavity, and an air suction pipe is fixedly connected to one end of the connecting barrel.

[0013] Preferably, an exhaust pipe is embeddedly arranged on the surface of the guide sleeve, one end of the exhaust pipe is communicated with the gas collecting cavity, the other end of the exhaust pipe extends to the outside of the guide sleeve and is provided with a one-way valve.

[0014] Preferably, a fixing block is fixedly connected to the top surface of the connecting disc, a groove is arranged on the surface of the fixing block, a positioning block is fixedly connected to the bottom of the guide column, and the positioning block is matched with the groove.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1、The present application sets the extrusion piece and two groups of exhaust holes in the guide sleeve, in the initial stage of mold closing, the guide column is inserted into the guide sleeve, one end of the guide column contacts with the extrusion piece, and the step-by-step exhaust mode of "initial single-hole exhaust, multi-hole coordinated exhaust after stroke increase" is adopted, on the one hand, it avoids the reverse filling of external air, on the other hand, it adaptively adjusts the exhaust rate and eliminates the risk of burning of the inner wall of the guide sleeve.

[0016] 2、The present application sets the connecting ring in the guide sleeve, in the mold closing stage, the connecting ring wipes and cleans the surface of the guide column inserted into the guide sleeve, removes the debris generated during casting, at the same time, the extrusion piece drives the connecting ring to move synchronously during mold closing, so that the cleaning brush on the connecting ring closely fits the surface of the guide column, and the wiping and cleaning can be performed again during mold opening, thereby improving the cleaning effect on the surface of the guide column.

[0017] 3、During the mold closing operation, the extrusion piece moves downward and drives the air charging piece to move synchronously, part of the air in the gas collecting cavity is collected and delivered to the connecting ring, when the storage reaches the preset pressure value, the air is sprayed through the air jet head on the connecting ring, at this time, it is just in the stage of mold opening, material taking, spray of release agent and demolding, the air curtain formed by the multiple air jet heads at the inlet end of the guide sleeve forms a protection, thereby preventing the release agent or other debris from entering the guide sleeve and providing good protection effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In the drawings: Figure 1 It is an overall exploded state structure schematic diagram of the die casting mold for the automotive interior part proposed by the present application; Figure 2 It is a side view cross-sectional structure schematic diagram of the die casting mold for the automotive interior part proposed by the present application; Figure 3 It is a left mold side cross-sectional structure schematic diagram in the die casting mold for the automotive interior part proposed by the present application; Figure 4 It is an enlarged structure schematic diagram of area A in the die casting mold for the automotive interior part proposed by the present application; Figure 3 Figure 5 It is an enlarged structure schematic diagram of area B in the die casting mold for the automotive interior part proposed by the present application; Figure 3 Figure 6 It is a left mold and guide sleeve local cross-sectional structure schematic diagram in the die casting mold for the automotive interior part proposed by the present application; Figure 7 It is an extrusion piece local cross-sectional structure schematic diagram in the die casting mold for the automotive interior part proposed by the present application; Figure 8 ​​A schematic view of a partial structure of a connecting ring in a die casting die for an automotive interior part is provided.

[0019] In the figure: 1, left die; 11, guide sleeve; 2, right die; 21, pouring sleeve; 22, guide column; 23, positioning block; 3, gas collecting cavity; 41, connecting disc; 42, fixing block; 43, connecting plate; 44, plugging ring; 45, exhaust hole; 46, first limiting opening; 47, return spring; 48, second limiting opening; 5, connecting ring; 51, sliding seat; 52, sliding rail; 53, fixing ring; 54, cleaning brush; 55, limiting sleeve; 56, first opening; 57, second opening; 58, connecting rod; 59, extension spring; 591, limiting block; 61, extrusion plate; 62, T-shaped piece; 63, connecting cylinder; 64, air suction pipe; 65, flexible hose; 66, cavity; 67, air jet head; 7, exhaust pipe. DETAILED DESCRIPTION

[0020] The application will be further described in detail below with reference to the accompanying drawings and examples, so that those skilled in the art can implement the application according to the description.

[0021] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0022] In the description of the application, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the 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 application.

[0023] Example 1: Reference Figures 1-8The utility model relates to an automobile interior part pressure casting die, including left mould 1 and right mould 2, and the top four -around surface of left mould 1 is embeddedly installed with guide sleeve 11, and one side of right mould 2 is provided with pouring sleeve 21, and the other side of right mould 2 is installed with guide column 22 corresponding to guide sleeve 11, further including: gas collection chamber 3 is set up in the outside of guide sleeve 11 and is opened in left mould 1, two groups of exhaust holes 45 are annularly distributed on the side wall of guide sleeve 11, extruding piece is installed in guide sleeve 11, movable connecting ring 5 is set up in the import end of guide sleeve 11, when pressure casting, guide column 22 is inserted into guide sleeve 11 and contacts extruding piece, so that two groups of exhaust holes 45 are gradually opened exhaust correspondingly, and the synchronous operation of connecting ring 5 is driven by the displacement of extruding piece, reduces the contact distance of connecting ring 5 and the surface of guide column 22, simultaneously, fills the energy of connecting ring 5 through inflator every time when extruding piece moves down, and after opening die operation, gas is spouted from the import end of guide sleeve 11.

[0024] In the production of automobile interior part pressure casting, the prior art has many obvious defects: the exhaust groove of traditional pressure casting die is simple in design, mostly linear or shallow groove type, the exhaust passage has small cross-sectional area and single path, leading to low exhaust efficiency, the gas in the cavity cannot be discharged in time, high pressure area is easily formed to cause burning defect, the back pressure generated by residual gas also increases the clamping resistance, affecting the clamping precision, not only damaging the appearance and mechanical properties of the product, but also corroding and damaging the guide structure such as guide column 22 and guide sleeve 11, shortening the service life of the die, increasing the production cost and maintenance difficulty; at the same time, the surface of guide column 22 is easy to leave casting debris, the existing cleaning structure has poor cleaning effect, affecting the guiding accuracy, and the release agent or debris is easy to enter the inside of guide sleeve 11, further aggravating the wear of the guide structure.

[0025] The present scheme effectively solves these problems through innovative design, and the working principle and effect of each component are as follows: when the mold closing operation is performed, the right mold 2 moves towards the left mold 1, the guide column 22 gradually inserts into the guide sleeve 11, one end of the guide column 22 contacts the extrusion piece in the guide sleeve 11 and pushes it downward. In the initial stage of mold closing, the displacement of the extrusion piece is small, only one set of exhaust holes 45 is opened, realizing single-hole exhaust. At this time, the cross-sectional area of the exhaust passage is moderate, which can not only exhaust part of the gas in the guide sleeve 11, but also avoid the reverse inflow of external air. With the increase of mold closing stroke, the depth of the guide column 22 inserted into the guide sleeve 11 increases, and the extrusion piece continues to move downward, driving all the exhaust holes 45 to open, realizing multi-hole coordinated exhaust, which significantly increases the cross-sectional area of the exhaust passage, can quickly exhaust the high-pressure gas formed in the guide sleeve 11 due to the reduction of space, and adaptively adjusts the exhaust rate, effectively eliminates the risk of burning caused by the compression of the gas in the inner wall of the guide sleeve 11. At the same time, the exhaust gas enters the gas collection chamber 3 arranged outside the guide sleeve 11 and inside the left mold 1, which plays a role in buffering and temporarily storing the gas, avoiding the generation of excessive airflow impact when the gas is directly exhausted, and then the gas is exhausted to the outside through the exhaust pipe 7. In the process of the extrusion piece moving downward, the movable connecting ring 5 is also driven to move synchronously. The connecting ring 5 is arranged at the inlet end of the guide sleeve 11, and its displacement reduces the contact distance between the connecting ring 5 and the surface of the guide column 22. The cleaning brush 54 on the connecting ring 5 is in closer contact with the surface of the guide column 22, and the surface of the guide column 22 inserted into the guide sleeve 11 is fully wiped during the mold closing stage, effectively removing the debris generated during casting, ensuring the cleanliness of the surface of the guide column 22 and improving the guiding accuracy. In the mold opening stage, the connecting ring 5 moves upward with the extrusion piece, and the surface of the guide column 22 is wiped and cleaned again, further improving the cleaning effect.

[0026] In addition, the inflation piece is also driven to move synchronously with the extrusion piece during each downward movement of the extrusion piece. The inflation piece collects part of the air in the gas collection chamber 3 and delivers it to the connecting ring 5 for storage. When the gas in the connecting ring 5 is stored to a preset pressure value, after the mold opening operation, it is just in the stage of opening the mold to take out the material and spray the release agent. The multiple air jets 67 on the connecting ring 5 spray gas to form an air curtain at the inlet end of the guide sleeve 11. The air curtain can effectively block the release agent or other debris from entering the guide sleeve 11, providing good protection for the guide structure of the guide sleeve 11 and the guide column 22, reducing wear and failure caused by impurities entering, prolonging the service life of the mold, reducing production cost and maintenance difficulty, and at the same time, the whole process is realized through mechanical linkage, without the need for additional power control devices, the structure is compact, the operation is stable and reliable, and the quality and efficiency of the die-casting production of automobile interior parts are significantly improved.

[0027] Embodiment 2: refer to Figure 3 , Figure 4 , Figure 6 and Figure 7The extrusion part further comprises a connecting disc 41 arranged in the guide sleeve 11, the connecting disc 41 is fixedly connected with a connecting plate 43 around the connecting disc 41, the connecting plate 43 is slidingly connected in a second limiting opening 48, the second limiting opening 48 is arranged on the side wall of the guide sleeve 11, a first limiting opening 46 is arranged on the inner wall of the guide sleeve 11, the first limiting opening 46 is in communication with the second limiting opening 48, the first limiting opening 46 is in communication with the exhaust hole 45, a blocking ring 44 is slidingly connected in the first limiting opening 46, one end of the blocking ring 44 is fixedly connected with the connecting plate 43, a reset spring 47 is fixedly arranged at the bottom of the connecting disc 41, and the end of the reset spring 47 is fixedly connected in the guide sleeve 11.

[0028] During the process of inserting the guide column 22 into the guide sleeve 11, in the initial stage, the space in the guide sleeve 11 is large, but the gas pressure is low, at this time, the single exhaust hole 45 or the gap in the side wall of the guide sleeve 11 can meet the exhaust demand, if the multi-hole is opened at this time, the outside air will be filled in the reverse direction due to the too large exhaust passage, especially when there is dust in the die-casting environment, the inner wall of the guide sleeve 11 will be polluted, and in the middle and later stages, the space in the guide sleeve 11 is rapidly reduced, and the pressure is rapidly increased, at this time, the number of exhaust holes 45 is increased, the exhaust cross-sectional area is instantaneously expanded, the high-pressure gas is rapidly released, the gas compression heating caused by insufficient exhaust is avoided, and the risk of burning the inner wall of the guide sleeve 11 is eliminated from the root, the design of the “on-demand distribution exhaust passage” ensures the controllability of the exhaust in the initial stage, and solves the bottleneck of high-pressure exhaust in the middle and later stages, in addition, when the guide column 22 is inserted, if all the exhaust holes 45 are instantaneously opened, the “back blowing force” will be generated due to the rapid exhaust of the gas, the guide column will be subjected to lateral force and eccentric load, the guiding accuracy will be affected, in the initial stage, the exhaust speed of the gas is slow, the back blowing force is small, the guide column 22 is stably stressed, and the smoothness of the initial insertion can be ensured, in the middle and later stages, the guide column 22 has been deeply inserted into the guide sleeve 11, and the guide column 22 and the guide sleeve 11 form stable support, even if the multi-hole exhaust generates a larger back blowing force, the eccentric load will not be caused, the guiding accuracy is ensured, the wear of the guide column 22 and the guide sleeve 11 is effectively reduced, and the size deviation of the casting caused by the eccentric load is avoided.

[0029] Embodiment 3: refer to 4, Figure 5 , Figure 6 and Figure 8The difference between the embodiment 2 is that: one end of the connecting plate 43 is fixed with a connecting rod 58, the sidewall of the guide sleeve 11 is provided with a second opening 57, one end of the connecting rod 58 penetrates the gas collecting cavity 3 and the second opening 57 and is attached to one side of the connecting ring 5, the surface of the connecting rod 58 is fixed with a limiting block 591, one side of the limiting block 591 is fixed with a telescopic spring 59, the end of the telescopic spring 59 is fixedly connected with the connecting ring 5, the inner wall of the connecting ring 5 is provided with a cleaning brush 54, the outer wall of the connecting ring 5 is installed with a sliding seat 51, the sliding seat 51 is slidingly connected on the sliding rail 52, the sliding rail 52 is installed on the inner wall of the fixed ring 53, the fixed ring 53 is embeddedly installed on the inner wall of the guide sleeve 11, the inner wall of the fixed ring 53 is fixed with a limiting sleeve 55, the surface of the fixed ring 53 and the guide sleeve 11 is provided with a first opening 56, the connecting rod 58 slidingly penetrates in the first opening 56.

[0030] When the mold is closed, the guide column 22 pushes the extrusion piece to move downward, the extrusion piece drives the connecting rod 58 to move synchronously, one end of the connecting rod 58 is connected with the connecting ring 5, drives the connecting ring 5 to move downward synchronously, in the process of moving of the connecting ring 5, the sliding seat 51 slides on the sliding rail 52, limits the movement of the connecting ring 5, makes the movement of the connecting ring 5 more stable, the guide column 22 extends into the guide sleeve 11, the surface of the guide column 22 contacts with the cleaning brush 54 installed on the surface of the connecting ring 5, the cleaning brush 54 can wipe and clean the debris on the surface of the guide column 22, with the downward movement of the connecting ring 5 driven by the extrusion piece, the connecting ring 5 is limited by the structure of the limiting sleeve 55, when the connecting ring 5 moves downward, the whole moves to the center of the connecting ring 5, at this time, one end of the connecting rod 58 is separated from the connecting ring 5, the cleaning brush 54 on the connecting ring 5 is more closely attached to the surface of the guide column 22, effectively improves the scale and debris on the surface of the guide column 22, avoids the uneven cleaning phenomenon of the traditional fixed cleaning method, effectively cleans the part where the debris is easily accumulated between the guide column 22 and the fixed end of the right mold 2.

[0031] It should be noted that the connecting ring 5 is an annular pipe body made of aluminum alloy material, the outer layer is coated with rubber material, the surface of the rubber is coated with a lubricating coating, the displacement and deformation of the connecting ring 5 is small, so it will not cause the structure to be unable to run smoothly.

[0032] Embodiment 4: refer to Figure 4 , Figure 5 and Figure 6The same as example 3, further more: the inflator includes a cavity 66 opened in the inside of the connecting ring 5, the top of the connecting ring 5 is annularly distributed with the jet heads 67, the inside of the connecting rod 58 is sleeved with the flexible tube 65, one end of the flexible tube 65 is fixedly connected with the connecting ring 5, the bottom of the connecting rod 58 is fixedly connected with the extrusion plate 61, the bottom of the extrusion plate 61 is fixedly connected with the T-shaped piece 62, one end of the T-shaped piece 62 is slidably connected with the connecting cylinder 63, the other end of the flexible tube 65 penetrates in the connecting rod 58, the extrusion plate 61 and the T-shaped piece 62, one end of the flexible tube 65 is provided with a one-way valve, the safety valve is arranged on the plurality of jet heads 67, the connecting cylinder 63 is arranged in the gas collecting cavity 3, one end of the connecting cylinder 63 is fixedly connected with the air suction pipe 64, the surface of the guide sleeve 11 is embeddedly arranged with the exhaust pipe 7, one end of the exhaust pipe 7 is communicated with the gas collecting cavity 3, the other end of the exhaust pipe 7 extends to the outside of the guide sleeve 11 and is provided with a one-way valve.

[0033] When the extrusion piece moves downward, the extrusion plate 61 arranged at one end of the connecting rod 58 extrudes the T-shaped piece 62, the T-shaped piece 62 is composed of a sliding rod and a piston and slides in the inside of the connecting cylinder 63, the air in the inside of the connecting cylinder 63 is compressed, at this time, the one-way valve at one end of the flexible tube 65 located at the T-shaped piece 62 is opened, the gas enters the inside of the cavity 66 through the flexible tube 65 and is stored, at this time, the gas cannot run out, when the gas pressure in the cavity 66 reaches a predetermined threshold value at the jet head 67, the gas is sprayed from the jet head 67, because the jet head 67 is arranged at an inclined angle and the sprayed gas flow is fan-shaped, the gas flows sprayed from the plurality of jet heads 67 form a gas curtain towards the center of the inlet end of the guide sleeve 11, good protection is formed, dust and debris after mold opening cannot enter the guide sleeve 11, wherein the jet head 67 sprays the gas flow, the device is in the mold opening state, the sprayed gas can assist in cooling the mold to a certain extent and improve the cooling effect of the mold.

[0034] It should be noted that the flexible tube 65 is composed of a steel pipe and a TPU hose, the connecting end of the flexible tube 65 and the connecting ring 5 is made of a steel pipe material, the steel pipe penetrates into the connecting rod 58 and is connected through the TPU hose, in this way, when the connecting ring 5 and the connecting rod 58 are separated, the steel pipe can play a limiting support role, guaranteeing the reciprocating separation operation of the subsequent structure.

[0035] The top surface of the connecting disc 41 is fixedly connected with the fixed block 42, the surface of the fixed block 42 is provided with a groove, the bottom of the guide column 22 is fixedly connected with the positioning block 23, the positioning block 23 is matched with the groove, when the mold is closed, the positioning block 23 corresponds to the groove on the fixed block 42, the stress is uniformly distributed, improving the uniformity of the stress of the extrusion piece.

[0036] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but cannot be understood as the limitation of the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are equivalent modifications and evolutions of the above embodiments according to the essential technology of the present application, and these all belong to the protection scope of the present application.

Claims

1. A die-casting mold for automotive interior parts, comprising a left mold (1) and a right mold (2), wherein a guide sleeve (11) is embedded and installed on the top periphery of the left mold (1), a casting sleeve (21) is provided on one side of the right mold (2), and a guide post (22) is installed on the other side of the right mold (2) corresponding to the guide sleeve (11), characterized in that, Also includes: The gas collecting cavity (3) is located outside the guide sleeve (11) and is opened inside the left mold (1); Two sets of exhaust holes (45) are arranged in a ring on the side wall of the guide sleeve (11); The extrusion component is installed inside the guide sleeve (11); A movable connecting ring (5) is provided at the inlet end of the guide sleeve (11); During die casting, the guide post (22) is inserted into the guide sleeve (11) to contact the extruder, so that the two sets of vent holes (45) gradually open to release air. The displacement of the extruder drives the connecting ring (5) to run synchronously, reducing the contact distance between the connecting ring (5) and the surface of the guide post (22). At the same time, the connecting ring (5) is energized by the air inflator each time the extruder moves downward. After the mold opening operation, gas is ejected from the inlet end of the guide sleeve (11).

2. The die-casting mold for automotive interior parts according to claim 1, characterized in that, The extrusion component includes a connecting plate (41) disposed inside the guide sleeve (11). A connecting plate (43) is fixedly connected around the connecting plate (41). The connecting plate (43) is slidably connected inside the second limiting port (48). The second limiting port (48) is opened on the side wall of the guide sleeve (11). A first limiting port (46) is opened on the inner wall of the guide sleeve (11). The first limiting port (46) is connected to the second limiting port (48). The first limiting port (46) is connected to the exhaust port (45).

3. The die-casting mold for automotive interior parts according to claim 2, characterized in that, The first limiting port (46) has a sealing ring (44) slidably connected inside. One end of the sealing ring (44) is fixedly connected to the connecting plate (43). The bottom of the connecting plate (41) is fixedly equipped with a reset spring (47). The end of the reset spring (47) is fixedly connected inside the guide sleeve (11).

4. The die-casting mold for automotive interior parts according to claim 3, characterized in that, One end of one of the connecting plates (43) is fixed with a connecting rod (58), and the side wall of the guide sleeve (11) is provided with a second opening (57). One end of the connecting rod (58) passes through the air collection cavity (3) and the second opening (57) and fits against one side of the connecting ring (5). A limit block (591) is fixed on the surface of the connecting rod (58), and a telescopic spring (59) is fixed on one side of the limit block (591). The end of the telescopic spring (59) is fixedly connected to the connecting ring (5).

5. A die-casting mold for automotive interior parts according to claim 4, characterized in that, The inner wall of the connecting ring (5) is provided with a cleaning brush (54), and the outer wall of the connecting ring (5) is provided with a slide (51). The slide (51) is slidably connected to the slide rail (52). The slide rail (52) is installed on the inner wall of the fixing ring (53). The fixing ring (53) is embedded in the inner wall of the guide sleeve (11).

6. The die-casting mold for automotive interior parts according to claim 5, characterized in that, The inner wall of the fixing ring (53) is fixed with a limiting sleeve (55), and the surfaces of the fixing ring (53) and the guide sleeve (11) are provided with a first opening (56), and the connecting rod (58) slides through the first opening (56).

7. A die-casting mold for automotive interior parts according to claim 6, characterized in that, The inflatable component includes a cavity (66) opened inside the connecting ring (5), and air jets (67) are installed in a ring on the top of the connecting ring (5). A telescopic hose (65) is sleeved inside the connecting rod (58), one end of the telescopic hose (65) is fixedly connected to the connecting ring (5), and a compression plate (61) is fixed at the bottom of the connecting rod (58).

8. A die-casting mold for automotive interior parts according to claim 7, characterized in that, The bottom of the extrusion plate (61) is fixed with a T-shaped piece (62), one end of the T-shaped piece (62) is slidably connected to a connecting cylinder (63), the other end of the telescopic hose (65) passes through the connecting rod (58), the extrusion plate (61) and the T-shaped piece (62), one end of the telescopic hose (65) is provided with a one-way valve, multiple jet heads (67) are provided with safety valves, the connecting cylinder (63) is installed in the air collection chamber (3), and one end of the connecting cylinder (63) is fixed with an air intake pipe (64).

9. A die-casting mold for automotive interior parts according to claim 1, characterized in that, An exhaust pipe (7) is embedded in the surface of the guide sleeve (11). One end of the exhaust pipe (7) is connected to the gas collection chamber (3), and the other end of the exhaust pipe (7) extends to the outside of the guide sleeve (11) and is equipped with a one-way valve.

10. A die-casting mold for automotive interior parts according to claim 3, characterized in that, A fixing block (42) is fixed on the top surface of the connecting plate (41), and a groove is provided on the surface of the fixing block (42). A positioning block (23) is fixed on the bottom of the guide post (22), and the positioning block (23) is adapted to the groove.

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