Ex situ guided pattern stripping die-casting mold

Abstract

This invention discloses a displacement-guided die-casting mold, relating to the field of die-casting mold technology. It includes an upper mold frame and a lower mold frame, with several fixing groups and fastening components arranged between them. The fastening components include several inclined guide pillars and several sliding groups. The inclined guide pillars are located on the upper mold frame, and the sliding groups are located on the lower mold. The inclined guide pillars extend into the sliding groups, and cooling channels are provided inside the sliding groups and the lower mold. A mold cavity assembly is located on the side of the sliding group near the center of the lower mold. The fixing groups and inclined guide pillars position and fasten the upper and lower mold frames when they are closed. During the movement of the inclined guide pillars, the mold cavity assemblies move through the sliding groups, causing the multiple mold cavity assemblies to converge towards the axis of the lower mold to form a forming cavity. Molten metal is injected through the injection port during the die-casting process, and coolant flows through the cooling channels, thereby improving the efficiency of the die-casting process.

Description

Technical Field

[0001] This invention relates to the field of die casting mold technology, specifically a displacement-guided type ejection die casting mold. Background Technology

[0002] Die casting molds are the core process equipment in pressure casting production. The basic principle is to fill the mold cavity with molten non-ferrous metals (such as aluminum alloys, zinc alloys, magnesium alloys, etc.) at extremely high speed under high pressure, and then rapidly solidify and form the shape under pressure, thereby obtaining metal parts with clear contours, accurate dimensions, and smooth surfaces. This process has significant advantages such as high production efficiency, high material utilization, and the ability to form complex thin-walled components, and has been widely used in many industrial fields such as automobile manufacturing, aerospace, and hardware tools. With the increasing demands for quality in modern manufacturing, particularly the stringent requirements on internal density, dimensional accuracy, and surface quality, the design and manufacturing level of die-casting molds has become a key factor determining product competitiveness. Traditional die-casting molds typically consist of an upper mold and a lower mold. On the one hand, under long-term high-pressure and high-temperature cyclic working conditions, the mold's guiding accuracy is easily affected, leading to poor alignment when the mold cavity assembly closes, affecting the uniformity of the die-cast part's wall thickness and resulting in poor die-casting quality. On the other hand, the cooling system design of existing molds is generally quite simple, usually only a straight-through cooling water channel is set in the mold cavity. This results in extremely uneven temperature distribution in the forming cavity after the molten metal enters from the injection port, leading to poor die-casting quality. Summary of the Invention

[0003] The purpose of this invention is to provide a displacement-guided die casting mold to solve the problem of poor die casting quality in existing technologies.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An off-site guided ejector die casting mold includes an upper mold frame and a lower mold frame. An upper mold is provided at the bottom of the upper mold frame, and a lower mold is provided at the top of the lower mold frame. The upper mold is located above the lower mold. A plurality of fixing groups and fastening components are provided between the upper mold frame and the lower mold frame. The fixing group includes a fixing groove and a fixing pin. The fixing pin is provided on the upper mold frame, and the fixing groove is provided on the lower mold frame. The fixing pin extends into the fixing groove. The fastening assembly includes several inclined guide posts and several sliding groups. The inclined guide posts are disposed on the upper mold frame and are located between two adjacent fixing pins. The sliding groups are located on the lower mold and the inclined guide posts extend into the sliding groups. Cooling channels are provided between the sliding groups and the interior of the lower mold. Each sliding group has a mold cavity assembly on its side near the center of the lower mold. The mold cavity assembly is slidably connected to the upper mold and the lower mold respectively. A sprue is provided on the upper mold frame and the sprue is aligned with one of the mold cavity assemblies.

[0005] During the movement of the upper mold frame to the lower mold frame, the upper mold frame drives the upper mold to move to the lower mold. During the movement of the upper mold frame, the upper mold frame drives the fixed assembly and fastening assembly to move, so that the fixed pin and inclined guide post set on the upper mold frame move to the fixed groove and the sliding assembly respectively, so that the fixed pin and inclined guide post position and fasten the upper mold frame and the lower mold frame together. As the inclined guide post moves, it drives the sliding assembly to move, which in turn drives the mold cavity assembly to move. As a result, several mold cavity assemblies move together towards the axis of the lower mold, so that the upper mold, lower mold, and several mold cavity assemblies cooperate to form a molding cavity. Molten metal is then injected into the molding cavity through the injection port for die casting. During the die casting process, coolant is introduced into the cooling channel to improve the efficiency of die casting.

[0006] Preferably, the sliding assembly consists of a sliding block and two fixed frames. The two fixed frames are arranged on the lower mold frame, and the sliding block is located between the two fixed frames. A track is provided on one side of the two fixed frames opposite to each other, and the sliding block is slidably connected to the fixed frames through the track.

[0007] When the upper and lower mold frames are separated, the sliding block is located on the side of the fixed frame away from the lower mold frame. When the upper mold frame moves to the lower mold frame, the upper mold frame drives the inclined guide post to move closer to the lower mold frame. During the movement, the inclined guide post extends into the guide hole. As the distance between the upper and lower mold frames decreases, the inclined guide post moves continuously along the axis of the upper mold frame. In turn, the inclined guide post drives the sliding block to move along the track on the fixed frame towards the axis of the lower mold frame. Finally, after the upper and lower mold frames are closed, the inclined guide post and the fixing pin cooperate to fasten the upper and lower mold frames. When the die casting process requires separation, the upper mold frame moves away from the lower mold frame. During this movement, the upper mold frame drives the inclined guide post to move away from the axis of the upper mold frame. In turn, the inclined guide post drives the sliding block to move away from the lower mold frame, and the sliding block drives the mold cavity assembly to separate.

[0008] Preferably, the sliding block is provided with a guide hole, the inclined guide post extends into the guide hole, the axis of the inclined guide post coincides with the axis of the guide hole, and the axis of the inclined guide post forms an angle with the axis of the upper mold.

[0009] As the inclined guide post moves downwards along the mold frame, it extends into the guide hole, limiting the guide post's position. During this movement, the inclined guide post drives the sliding block through the guide hole, causing the sliding block to slide along the track of the fixed frame. This allows several sliding blocks to move several mold cavity assemblies along the side of the fixed frame, enabling the mold cavity assemblies to simultaneously move towards the center to form a molding cavity, and also simultaneously move towards the edge for separation and demolding.

[0010] Preferably, a plurality of mold cavity assemblies are combined with the upper mold and the lower mold to form a molding cavity, and an overflow bag is provided in the fixed frame located on the side opposite to the injection port. The injection port and the overflow bag are respectively connected to the molding cavity.

[0011] After the molten metal is injected into the molding cavity through the injection port, it flows towards the side near the overflow bag, allowing excess molten metal to be discharged through the overflow bag, thus preventing the molten metal from overflowing through the injection port.

[0012] Preferably, the cooling channel consists of a small conveying channel, a large conveying channel, and a connecting channel. The small conveying channel is located on the side near the injection port, the large conveying channel is located on the side away from the injection port, and the connecting channel is located between the small conveying channel and the large conveying channel, and the connecting channel is connected to both the small conveying channel and the large conveying channel.

[0013] The coolant enters through a small delivery channel, then flows into a connecting channel, and then through the connecting channel to the large delivery channel. This allows the coolant to recover and utilize heat during its flow, and to heat the molding cavity and overflow package, thus preheating the molding cavity and overflow package for better die casting of molten metal.

[0014] Preferably, both the small and large conveying channels are Tesla tube structures.

[0015] Preferably, the flow-blocking end of the small conveying channel and the flow-blocking end of the large conveying channel are connected in series through a connecting channel.

[0016] Since both the small and large delivery channels are Tesla tube structures, and the obstruction ends of the small and large delivery channels are connected in series via a connecting channel, the coolant enters from the open end of the small delivery channel and exits from the obstruction end. The coolant is not affected by channel resistance and thus passes quickly through the small delivery channel, transferring heat from near the injection port towards the overflow tank. When the coolant is delivered to the large delivery channel via the connecting channel, it enters from the obstruction end and exits from the open end, thus... Within the large conveying channel, flow resistance is generated due to the channel's influence, resulting in a longer flow time for the coolant. This effectively transfers the heat carried in the small conveying channel to the side away from the injection port, thus achieving heat recovery and utilization. This heat is then used to heat the molding cavity and overflow pot on the side away from the injection port, making the molten metal flow more smoothly within the molding cavity and overflow pot. This avoids localized cooling within the molding cavity and overflow pot, which would cause the molten metal to solidify quickly upon contact with cold air, leading to blockages in the molding cavity's conveying process. Consequently, the quality of die casting is further improved.

[0017] Preferably, the conveying cross-section of the small conveying channel is smaller than that of the large conveying channel.

[0018] Because the cross-section of the smaller conveying channel is smaller than that of the larger conveying channel, the flow velocity of the coolant in the smaller conveying channel is greater than that in the larger conveying channel. Furthermore, since the smaller conveying channel is closer to the injection port, the temperature of the molten metal near the injection port is higher during the injection process. Therefore, when the coolant is conveyed through the smaller conveying channel with its smaller cross-section, the high temperature near the injection port can be carried away by increasing the flow velocity. As the coolant carrying heat flows through the larger conveying channel, the flow velocity of the coolant near the larger conveying channel slows down due to the larger conveying cross-section. This allows the heat to be conducted to the area away from the injection port, ensuring that the temperature of the molding cavity in that area does not decrease. This avoids the phenomenon of rapid cooling of the molten metal during injection due to encountering a colder molding cavity, thereby improving the quality of die casting.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. By scientifically arranging a fixing assembly consisting of fixing pins and fixing grooves between the upper and lower mold frames, and a fastening assembly consisting of inclined guide pillars and sliding blocks, dual guidance and precise positioning are achieved during the mold closing process. During the mold closing action, the upper mold frame drives the inclined guide pillars vertically downwards. The inclined guide pillars extend into the guide holes on the sliding block, thereby driving the sliding block to slide smoothly along the track on the fixing frame towards the central axis of the mold. This causes the mold cavity assembly, fixed to the inner side of the sliding block, to synchronously move towards the center. This ensures that the mold cavity assembly, after closing, forms a coaxial and sealed molding cavity with the upper and lower molds, thus avoiding casting wall thickness deviations and flash defects caused by mold closing misalignment.

[0020] 2. By setting up a cooling channel system inside the sliding assembly and the lower mold, consisting of a small conveying channel, a large conveying channel, and a connecting channel connected in series, and designing the channel near the injection port (high-temperature zone) as a Tesla tube structure with a smaller conveying cross-section, and the channel away from the injection port (low-temperature zone) as a Tesla tube structure with a larger conveying cross-section, and using a "flow-blocking end to flow-blocking end" series connection, the coolant first flows through the flow-through end of the small conveying channel at a higher flow rate. Due to the unidirectional flow-guiding characteristics of the Tesla tube, the resistance of the coolant is extremely small when flowing in the forward direction, which can quickly dissipate the excess heat generated near the injection port due to the injection of high-temperature molten metal. The efficient removal of residual heat enables rapid cooling of the high-temperature areas of the mold, preventing sticking and thermal fatigue caused by localized overheating. Subsequently, the coolant carrying heat enters the obstruction end of the large conveying channel through the connecting channel. At this point, due to the reversal of the flow direction and the sudden increase in the conveying cross-section, the coolant encounters great flow resistance in the large conveying channel, and the flow rate is significantly reduced. This allows the coolant sufficient time to efficiently and continuously release the heat it carries through the channel wall to the mold cavity area away from the injection port (i.e., the end of the molten metal filling and the overflow area), thereby achieving active preheating and heat preservation of the low-temperature areas of the mold. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the upper mold frame; Figure 4 This is a schematic diagram of the lower mold frame structure; Figure 5 This is a top view of the lower mold frame; Figure 6 This is a schematic diagram of the cooling channel structure; Figure 7 This is a top view of the cooling channel.

[0022] In the diagram: 1. Upper mold frame; 11. Upper mold; 12. Fixing assembly; 2. Lower mold frame; 21. Lower mold; 3. Fastening assembly; 31. Angled guide post; 32. Sliding assembly; 33. Sliding block; 34. Fixing frame; 35. Guide hole; 4. Cooling channel; 41. Small conveying channel; 42. Large conveying channel; 43. Connecting channel; 5. Mold cavity assembly; 6. Molding cavity; 61. Injection port; 62. Overflow bag. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-5 The first embodiment of the present invention shown is a displacement-guided die casting mold, including an upper mold frame 1 and a lower mold frame 2. The upper mold frame 1 is provided with an upper mold 11 at its bottom, and the lower mold frame 2 is provided with a lower mold 21 at its top. The upper mold 11 is located above the lower mold 21. A plurality of fixing groups 12 and fastening components 3 are provided between the upper mold frame 1 and the lower mold frame 2. The fixing group 12 includes a fixing groove and a fixing pin. The fixing pin is provided on the upper mold frame 1, and the fixing groove is provided on the lower mold frame 2. The fixing pin extends into the fixing groove. The fastening assembly 3 includes several inclined guide posts 31 and several sliding groups 32. The inclined guide posts 31 are disposed on the upper mold frame 1 and are located between two adjacent fixing pins. The sliding groups 32 are located on the lower mold 21 and the inclined guide posts 31 extend into the sliding groups 32. Cooling channels 4 are provided inside the sliding groups 32 and the lower mold 21. Each sliding group 32 is provided with a mold cavity assembly 5 on the side near the center of the lower mold 21. The mold cavity assembly 5 is slidably connected to the upper mold 11 and the lower mold 21 respectively. The upper mold frame 1 is provided with an injection port 61, which is aligned with one of the mold cavity assemblies 5.

[0025] In one specific embodiment of the present invention, the sliding assembly 32 consists of a sliding block 33 and two fixed frames 34. The two fixed frames 34 are arranged on the lower mold frame 2, and the sliding block 33 is located between the two fixed frames 34. A track is provided on the opposite side of the two fixed frames 34, and the sliding block 33 is slidably connected to the fixed frame 34 through the track.

[0026] In one specific embodiment of the present invention, the sliding block 33 is provided with a guide hole 35, the inclined guide post 31 extends into the guide hole 35, the axis of the inclined guide post 31 coincides with the axis of the guide hole 35, and the axis of the inclined guide post 31 has an angle with the axis of the upper mold 11.

[0027] In one specific embodiment of the present invention, a plurality of mold cavity assemblies 5 are combined with the upper mold 11 and the lower mold 21 to form a molding cavity 6. An overflow bag 62 is provided in the fixing frame 34 located on the side opposite to the injection port 61. The injection port 61 and the overflow bag 62 are respectively connected to the molding cavity 6.

[0028] like Figures 6-7 The second embodiment of the present invention shown provides a cooling channel 4 that differs from that of the first embodiment. The difference lies in that the traditional cooling channel 4 is changed from a direct-flow channel to a small delivery channel 41 and a large delivery channel 42 composed of two Tesla tubes at both ends. This allows the coolant to enter through the flow-through end of the small delivery channel 41 and exit through the flow-blocking end. After flowing through the connecting channel 43, it enters again through the flow-blocking end of the large delivery channel 42 and exits through the flow-through end of the large delivery channel 42. This results in a faster flow velocity and reduced flow resistance in the small delivery channel 41, thus achieving rapid cooling. In contrast, the coolant has a slower flow velocity and greater flow resistance in the large delivery channel 42, causing the heat exchange temperature in the small delivery channel 41 to be conducted to the end near the overflow package 62, thereby achieving the effect of preheating the molding cavity 6 and the overflow package 62.

[0029] The specific content is as follows: In one specific embodiment of the present invention, the cooling channel 4 is composed of a small conveying channel 41, a large conveying channel 42, and a connecting channel 43. The small conveying channel 41 is located on the side close to the injection port 61, the large conveying channel 42 is located on the side away from the injection port 61, and the connecting channel 43 is located between the small conveying channel 41 and the large conveying channel 42, and the connecting channel 43 is connected to both the small conveying channel 41 and the large conveying channel 42.

[0030] In one specific embodiment of the present invention, both the small conveying channel 41 and the large conveying channel 42 are Tesla tube structures.

[0031] In one specific embodiment of the present invention, the flow-blocking end of the small conveying channel 41 and the flow-blocking end of the large conveying channel 42 are connected in series through the connecting channel 43.

[0032] In one specific embodiment of the present invention, the conveying cross-section of the small conveying channel 41 is smaller than that of the large conveying channel 42.

[0033] Working principle of the invention: During the movement of the upper mold frame 1 to the lower mold frame 2, the upper mold frame 1 drives the upper mold 11 to move to the lower mold 21. During the movement of the upper mold frame 1, the upper mold frame 1 drives the fixed assembly 12 and the fastening assembly 3 to move, so that the fixed pin and the inclined guide post 31 set on the upper mold frame 1 move to the fixed groove and the sliding assembly 32 respectively, so that the fixed pin and the inclined guide post 31 position and fasten the upper mold frame 1 and the lower mold frame 2 together. When the upper mold frame 1 and the lower mold frame 2 are separated, the sliding block 33 is located on the side of the fixed frame 34 away from the lower mold frame 2. When the upper mold frame 1 moves to the lower mold frame 2, the upper mold frame 1 drives the inclined guide post 31 to move closer to the lower mold frame 2. During the movement, the inclined guide post 31 extends into the guide hole 35. As the distance between the upper mold frame 1 and the lower mold frame 2 continuously decreases, the inclined guide post 31 continuously moves along the axis of the upper mold frame 1. In turn, the inclined guide post 31 drives the sliding block 33 to move, causing the sliding block 33 to move along the track on the fixed frame 34 to the side closer to the axis of the lower mold frame 2. Finally, after the upper mold frame 1 and the lower mold frame 2 are closed, the inclined guide post 31 and the fixing pin cooperate to fasten the upper mold frame 1 and the lower mold frame 2. As the inclined guide post 31 moves downwards towards the mold frame 2, it extends into the guide hole 35, thereby limiting the guide post 31 to the guide hole 35. During the movement, the inclined guide post 31 drives the sliding block 33 through the guide hole 35, causing the sliding block 33 to slide along the track of the fixed frame 34. This allows several sliding blocks 33 to drive several mold cavity assemblies 5 to move along the side of the fixed frame 34, thereby causing several mold cavity assemblies 5 to move simultaneously towards the center to form the molding cavity 6, and also to move simultaneously towards the edge for separation and demolding. After the molten metal is injected into the molding cavity 6 through the injection port 61, the molten metal then flows towards the side closer to the overflow bag 62 after entering the molding cavity 6, so that the excess molten metal can be discharged through the overflow bag 62, thereby preventing the molten metal from overflowing through the injection port 61. The coolant enters through the small conveying channel 41, then flows through the small conveying channel 41 into the connecting channel 43, and then through the connecting channel 43 to the large conveying channel 42. This allows the coolant to recover and utilize heat during the flow process, and heats the molding cavity 6 and the overflow package 62, thereby putting the molding cavity 6 and the overflow package 62 in a preheated state. Since both the small conveying channel 41 and the large conveying channel 42 are Tesla tube structures, and the flow-blocking ends of the small conveying channel 41 and the large conveying channel 42 are connected in series via the connecting channel 43, the coolant enters from the flow-through end of the small conveying channel 41 and exits from the flow-blocking end of the small conveying channel 41. The coolant is not affected by the flow resistance and thus passes quickly through the small conveying channel 41, transferring the heat near the injection port 61 towards the side closer to the overflow bag 62. When the coolant is transported to the large conveying channel 42 via the connecting channel 43, since the coolant enters from the flow-blocking end of the large conveying channel 42, the heat from the large conveying channel 41 is transferred from the flow-blocking end of the small conveying channel 41 to the side closer to the overflow bag 62. The coolant flows out from the flow end of 2, and the coolant will be affected by the flow channel in the large conveying channel 42, resulting in a longer flow time in the large conveying channel 42. This can effectively transfer the heat carried in the small conveying channel 41 to the side away from the injection port 61, thereby realizing the recovery and utilization of heat. This heat is used to heat the forming cavity 6 and overflow bag 62 on the side away from the injection port 61, so that the molten metal flows more smoothly in the forming cavity 6 and overflow bag 62, avoiding the phenomenon that the forming cavity 6 is locally cold, causing the molten metal to solidify quickly upon encountering cold, resulting in blockage of the conveying in the forming cavity 6. Because the conveying cross-section of the small conveying channel 41 is smaller than that of the large conveying channel 42, the flow velocity of the coolant in the small conveying channel 41 is greater than that in the large conveying channel 42. Furthermore, because the small conveying channel 41 is closer to the injection port 61, the temperature of the molten metal near the injection port 61 is higher during the injection process. Therefore, when the coolant is conveyed through the small conveying channel 41 with its smaller conveying cross-section, the high temperature near the injection port 61 can be carried away by increasing the flow velocity. When the coolant carrying heat flows through the large conveying channel 42, the flow velocity of the coolant near the large conveying channel 42 slows down due to the larger conveying cross-section. As a result, the heat can be conducted to the area away from the injection port 61, thus ensuring that the temperature of the forming cavity 6 in this area does not decrease. This avoids the phenomenon of rapid cooling of the molten metal when it encounters the colder forming cavity 6 during the injection process. When the die casting process requires separation, the upper mold frame 1 moves away from the lower mold frame 2. During the movement of the upper mold frame 1, the inclined guide post 31 moves away from the axis of the upper mold frame 1. In turn, the inclined guide post 31 moves away from the axis of the upper mold frame 1. During the movement of the inclined guide post 31, the sliding block 33 moves away from the lower mold frame 2. As a result, the sliding block 33 causes the mold cavity assembly 5 to separate.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A displacement-guided type die-casting mold, characterized in that: The assembly includes an upper mold frame (1) and a lower mold frame (2). The upper mold frame (1) has an upper mold (11) at its bottom and a lower mold (21) at its top. The upper mold (11) is located above the lower mold (21). Several fixing groups (12) and fastening components (3) are provided between the upper mold frame (1) and the lower mold frame (2). The fixing group (12) includes a fixing groove and a fixing pin. The fixing pin is provided on the upper mold frame (1) and the fixing groove is provided on the lower mold frame (2). The fixing pin extends into the fixing groove. The fastening assembly (3) includes several inclined guide posts (31) and several sliding groups (32). The inclined guide posts (31) are set on the upper mold frame (1) and are located between two adjacent fixing pins. The sliding groups (32) are located on the lower mold (21) and the inclined guide posts (31) extend into the sliding groups (32). The sliding groups (32) and the interior of the lower mold (21) are provided with cooling channels (4). Each sliding group (32) is provided with a mold cavity assembly (5) on the side near the center of the lower mold (21). The mold cavity assembly (5) is slidably connected to the upper mold (11) and the lower mold (21) respectively. The upper mold frame (1) is provided with a sprue port (61) and the sprue port (61) is aligned with one of the mold cavity assemblies (5).

2. The off-site guided type die casting mold according to claim 1, characterized in that: The sliding assembly (32) consists of a sliding block (33) and two fixed frames (34). The two fixed frames (34) are set on the lower mold frame (2). The sliding block (33) is located between the two fixed frames (34). A track is provided on the opposite side of the two fixed frames (34). The sliding block (33) is slidably connected to the fixed frame (34) through the track.

3. The off-site guided type die casting mold according to claim 2, characterized in that: The sliding block (33) is provided with a guide hole (35), and the inclined guide post (31) extends into the guide hole (35). The axis of the inclined guide post (31) coincides with the axis of the guide hole (35), and the axis of the inclined guide post (31) has an angle with the axis of the upper mold (11).

4. The off-site guided type die casting mold according to claim 1, characterized in that: Several mold cavity assemblies (5) are combined with the upper mold (11) and the lower mold (21) to form a molding cavity (6). An overflow bag (62) is provided in a fixed frame (34) on the side opposite to the injection port (61). The injection port (61) and the overflow bag (62) are respectively connected to the molding cavity (6).

5. The off-site guided type die casting mold according to claim 1, characterized in that: The cooling channel (4) consists of a small conveying channel (41), a large conveying channel (42), and a connecting channel (43). The small conveying channel (41) is located on the side close to the injection port (61), the large conveying channel (42) is located on the side away from the injection port (61), and the connecting channel (43) is located between the small conveying channel (41) and the large conveying channel (42). The connecting channel (43) is connected to the small conveying channel (41) and the large conveying channel (42) respectively.

6. The off-site guided type die casting mold according to claim 5, characterized in that: Both the small conveying channel (41) and the large conveying channel (42) are Tesla tube structures.

7. A displacement-guided type die-casting mold according to claim 5, characterized in that: The flow-blocking end of the small conveying channel (41) and the flow-blocking end of the large conveying channel (42) are connected in series through a connecting channel (43).

8. A displacement-guided type die-casting mold according to claim 5, characterized in that: The conveying cross section of the small conveying channel (41) is smaller than that of the large conveying channel (42).

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