A plastic mold for an air conditioner guide rail and its manufacturing method

Abstract

The present invention belongs to the technical field of injection molds, and particularly relates to a plastic mold for an air conditioner guide rail and a manufacturing method thereof. The present invention successively includes an injection plate, an upper template, a lower template, an ejection plate and a bottom plate. A straight cooling water channel upper mold core is arranged in the upper template, and a lower mold core is arranged in the lower template. When the mold is closed, the straight cooling water channel upper mold core and the lower mold core approach each other to form a cavity, and a conformal cooling forming component is arranged in the straight cooling water channel upper mold core. The present invention adopts a "customized" water channel design that combines local conformal cooling of inserts with global traditional straight-through cooling, solves the problems of slow cooling speed of traditional straight water channels, product warping and incomplete filling caused by uneven cooling, and at the same time, through the combined cooling of the two, the distance between the water channel pipe wall and the mold cavity can be made uniform and close to the surface of the mold cavity, so as to achieve the purpose of uniformly and quickly transferring the heat of the plastic melt, avoiding residual stress to the greatest extent and shortening the molding cycle.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molds, and relates to an air-conditioning guide rail plastic mold and a manufacturing method thereof. Background Art

[0002] When injection molding complex structural parts of an air-conditioning guide rail, due to usage requirements and space limitations, the shape is complex and the size is small. The arc-shaped structure of the working surface used for guiding has a thickness of only 7.5 mm. The forming insert is restricted by space and cannot be designed with a cooling water channel according to the conventional method. Cooling is difficult and the cooling speed is slow, which easily causes problems such as warping and incomplete filling of the product due to uneven cooling. At the same time, in order to improve efficiency, the molding cycle is required to be controlled within 40 s, which brings great difficulties to molding.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an air-conditioning panel mold [Application No.: 20182214706.1], which includes a mold body, an upper module, a lower module, screw holes, bolts, a first cavity, a second cavity, a first heat dissipation groove, a second heat dissipation groove, a fixing block, and a liquid inlet pipe. An upper module is arranged on the mold body, and the upper module and the lower module are connected by screw holes and bolts. Cooling pipes are arranged inside the first heat dissipation groove and the second heat dissipation groove. Positioning holes are arranged on the contact surfaces of the first cavity and the second cavity. Sealing protrusions and sealing grooves are respectively arranged on the contact surfaces of the first cavity and the second cavity. Temperature measuring holes are opened on the front and rear sides of the first cavity and the second cavity. At the same time, the lower sides of both sides of the second cavity are welded to the fixing block. In this air-conditioning panel mold, positioning holes are arranged at the contact surfaces of the upper module and the lower module, which play a role in positioning and installing between the upper module and the lower module, and are beneficial to the precise installation between the upper module and the lower module. However, this solution still has problems such as difficult cooling, slow cooling speed, easy warping of the product, incomplete filling, and a long molding cycle caused by uneven cooling. Summary of the Invention

[0004] The purpose of the present invention is to provide an air-conditioning guide rail plastic mold for the above problems.

[0005] Another purpose of the present invention is to provide a manufacturing method of an air-conditioning guide rail plastic mold for the above problems.

[0006] To achieve the above purposes, the present invention adopts the following technical solutions:

[0007] An air conditioner guide rail plastic mold, successively including an injection plate, an upper template, a lower template, an ejection plate and a bottom plate. A straight cooling water channel upper mold core is provided in the upper template, and a lower mold core is provided in the lower template. When the mold is closed, the straight cooling water channel upper mold core and the lower mold core approach each other to form a cavity. A conformal cooling forming component is provided in the straight cooling water channel upper mold core. The conformal cooling forming component is located between the straight cooling water channel upper mold core and the lower mold core. A straight cooling water channel is also provided in the straight cooling water channel upper mold core, and the straight cooling water channel corresponds to the position of the conformal cooling forming component.

[0008] In the above-mentioned air conditioner guide rail plastic mold, a conformal cooling placement groove is provided in the straight cooling water channel upper mold core. The conformal cooling forming component is located in the conformal cooling placement groove. The conformal cooling forming component includes a cooling forming fixed block arranged in the conformal cooling placement groove. A conformal cooling insert is provided at the bottom of the cooling forming fixed block, and a conformal cooling water channel is provided in the conformal cooling insert.

[0009] In the above-mentioned air conditioner guide rail plastic mold, the conformal cooling insert is arc-shaped, and the conformal cooling water channel is also arc-shaped. When the mold is closed, the conformal cooling insert is located in the cavity. Anti-detachment rib strips are provided in the straight cooling water channel upper mold core, and the anti-detachment rib strips are in abutting and cooperating connection with the cooling forming fixed block.

[0010] In the above-mentioned air conditioner guide rail plastic mold, a number of guide rail forming grooves symmetrically arranged along the center line of the conformal cooling insert are provided on the conformal cooling insert, and a bottom plate forming groove corresponding to the position of the conformal cooling insert is provided in the lower mold core.

[0011] In the above-mentioned air conditioner guide rail plastic mold, an injection main channel is provided in the injection plate, an injection hole corresponding to the position of the injection main channel and matching in shape is provided in the upper template, an injection pressurization hole corresponding to the position of the injection hole is provided in the straight cooling water channel upper mold core, and the cross-sectional area of the injection pressurization hole is smaller than the cross-sectional area of the injection hole.

[0012] In the above-mentioned air conditioner guide rail plastic mold, an injection top groove is connected to the bottom of the injection pressurization hole, an injection bottom groove corresponding to the position of the injection top groove is provided in the lower mold core, the length of the injection top groove is greater than the length of the injection bottom groove, and when the mold is closed, the injection top groove is connected to the cavity.

[0013] In the above-mentioned air conditioner guide rail plastic mold, a number of ejector pins symmetrically arranged along the center line of the ejection plate are provided at the top of the ejection plate. A mold core push rod is also provided at the top of the ejection plate, and the mold core push rod is in abutting and cooperating connection with the bottom of the straight cooling water channel upper mold core.

[0014] In the above-mentioned plastic mold for an air-conditioning guide rail, a number of positioning square irons symmetrically arranged along the center line of the ejector plate are provided on the ejector plate, and the positioning square irons are in abutting cooperation with the bottom of the lower template.

[0015] In the above-mentioned plastic mold for an air-conditioning guide rail, a number of ejector plate fixing shafts symmetrically arranged along the center line of the bottom plate are provided on the bottom plate, the positions of the ejector plate fixing shafts correspond to those of the ejector plate, and a number of square iron fixing shafts symmetrically arranged along the center line of the bottom plate are also provided on the bottom plate, and the positions of the square iron fixing shafts correspond to those of the positioning square irons.

[0016] A manufacturing method for a plastic mold of an air-conditioning guide rail includes the following steps: S1: First, place the cooling and forming fixed block and the conformal cooling insert into the internal part of the vacuum furnace body, and then heat the cooling and forming fixed block and the conformal cooling insert through the heating body; S2: When the temperatures of the cooling and forming fixed block and the conformal cooling insert reach the welding temperature, apply a certain pressure to the cooling and forming fixed block and the conformal cooling insert through the upper and lower pressure rods, and perform heat preservation and pressure maintenance. During this process, plastic deformation first occurs at the welding interface, making the interface contact more fully, and atoms diffuse and migrate through the interface or inside the matrix, and finally a defect-free welding structure is obtained.

[0017] Compared with the existing technology, the advantages of the present invention are as follows:

[0018] 1. The present invention adopts a "customized" waterway design that combines local conformal cooling of the insert with global traditional straight-through cooling, solves problems such as slow cooling speed of the traditional straight waterway, warping of the product caused by uneven cooling, and incomplete filling, and at the same time, through the combined cooling of the two, the distance between the waterway pipe wall and the mold cavity can be made uniform and close to the surface of the mold cavity, so as to achieve uniform and rapid heat transfer of the plastic melt, and to avoid residual stress to the greatest extent and shorten the molding cycle.

[0019] 2. By adopting the diffusion welding process, the present invention broadens the manufacturing channels for the conformal cooling waterway of the mold, effectively shortens the mold design cycle, simplifies the mold design steps, improves the mold cooling efficiency and ensures the mold strength, while reducing the production cost of users.

[0020] 3. The diffusion welding process adopted by the present invention has the characteristics of uniform and dense welds, no re-cracking on the welded surface, no fusion line on the appearance, and the same material properties as the raw materials. It can well solve the leakage problems generated by machining the conformal cooling waterway, and at the same time can avoid the limitations of material selection of 3D printing technology, the size constraints of large and medium-sized molds, and the poor material mechanical properties.

[0021] 4. The present invention is manufactured by the method of laminated solid diffusion welding, which can not only ensure the dimensional accuracy and strength of local forming, shorten the forming cycle, but also save costs, and fully exert the advantages of conformal cooling.

[0022] 5. By setting the core push rod and ejector pin in the present invention, after the injection molding and cooling are completed, through the cooperation of the two, the cooling water channel and the ejection mechanism will not interfere with each other, and the ejection efficiency and the quality of the molded part are relatively high.

[0023] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. Description of the Drawings

[0024] Figure 1 is the exploded structure schematic diagram of the present invention.

[0025] Figure 2 is the exploded structure schematic diagram of the present invention in another direction.

[0026] Figure 3 is the structure schematic diagram of the upper template.

[0027] Figure 4 is the structure schematic diagram of the straight cooling water channel upper core.

[0028] Figure 5 is the cross-sectional schematic diagram of the straight cooling water channel upper core.

[0029] Figure 6 is the structure schematic diagram of the conformal cooling forming assembly.

[0030] Figure 7 is the structure schematic diagram of the conformal cooling forming assembly in another direction.

[0031] Figure 8 is the structure schematic diagram of the lower core.

[0032] Figure 9 is the cross-sectional schematic diagram of the conformal cooling insert.

[0033] In the figure: injection plate 1, upper template 2, lower template 3, ejection plate 4, bottom plate 5, straight cooling water channel upper core 6, lower core 7, conformal cooling forming assembly 8, straight cooling water channel 9, conformal cooling placement groove 10, cooling forming fixing block 11, conformal cooling insert 12, conformal cooling water channel 13, anti-detachment rib 14, guide rail forming groove 15, bottom plate forming groove 16, injection main runner 17, injection hole 18, injection pressure hole 19, injection top groove 20, injection bottom groove 21, ejector pin 22, core push rod 23, positioning square iron 24, ejector plate fixing shaft 25, square iron fixing shaft 26. Detailed Embodiments

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Combined with Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown in the figures, a plastic mold for an air conditioner guide rail successively includes an injection plate 1, an upper template 2, a lower template 3, an ejection plate 4, and a bottom plate 5. A straight cooling water channel upper mold core 6 is provided in the upper template 2, and a lower mold core 7 is provided in the lower template 3. When the mold is closed, the straight cooling water channel upper mold core 6 and the lower mold core 7 approach each other to form a cavity. A conformal cooling forming assembly 8 is provided in the straight cooling water channel upper mold core 6. The conformal cooling forming assembly 8 is located between the straight cooling water channel upper mold core 6 and the lower mold core 7. A straight cooling water channel 9 is further provided in the straight cooling water channel upper mold core 6, and the position of the straight cooling water channel 9 corresponds to that of the conformal cooling forming assembly 8.

[0036] In this embodiment, after injection molding, cold water is introduced into the straight cooling water channel 9 and the conformal cooling forming assembly 8. A "customized" water channel design that combines local conformal cooling of inserts with global traditional through-cooling is adopted, which solves problems such as slow cooling speed of traditional straight water channels, warping of products caused by uneven cooling, and incomplete filling. At the same time, through the combined cooling of the two, the distance between the water channel wall and the mold cavity can be made uniform and close to the surface of the mold cavity, achieving the purpose of uniformly and rapidly transferring the heat of the plastic melt, avoiding residual stress to the greatest extent, and shortening the molding cycle.

[0037] Combined with Figure 6 、 Figure 7 、 Figure 9 As shown in the figures, a conformal cooling placement groove 10 is provided in the straight cooling water channel upper mold core 6. The conformal cooling forming assembly 8 is located in the conformal cooling placement groove 10. The conformal cooling forming assembly 8 includes a cooling forming fixing block 11 provided in the conformal cooling placement groove 10. A conformal cooling insert 12 is provided at the bottom of the cooling forming fixing block 11, and a conformal cooling water channel 13 is provided in the conformal cooling insert 12.

[0038] Specifically, the cooling forming fixing block 11 is used to fix the conformal cooling insert 12. When the mold needs to be cooled, cold water is injected into the conformal cooling water channel 13. The distance between the conformal cooling water channel 13 and the workpiece is uniform, and the heat can be taken away more uniformly and quickly. Uniform cooling can effectively prevent residual stress and small protrusion warping deformation caused by uneven shrinkage during the forming of complex structural parts, and at the same time achieve the purpose of shortening the molding cycle, and the quality of the workpiece is relatively high.

[0039] Combined with Figure 9As shown, the conformal cooling insert 12 is arc-shaped, and the conformal cooling water channel 13 is also arc-shaped. When the mold is closed, the conformal cooling insert 12 is located inside the mold cavity. An anti-disengagement rib 14 is provided in the straight cooling water channel upper mold core 6, and the anti-disengagement rib 14 is in abutting fit with the cooling and forming fixing block 11.

[0040] In this embodiment, the conformal cooling insert 12 is arc-shaped, and the conformal cooling water channel 13 is also arc-shaped, which is adapted to the shape of the air-conditioning guide rail part to be produced, fits the part shape to the greatest extent, ensures the cooling efficiency, and can effectively prevent the small protrusion warping deformation caused by residual stress and uneven shrinkage during the forming of complex structural parts.

[0041] Combined Figure 6 、 Figure 7 、 Figure 8 As shown, a plurality of guide rail forming grooves 15 symmetrically arranged along the center line of the conformal cooling insert 12 are provided on the conformal cooling insert 12, and a bottom plate forming groove 16 corresponding to the position of the conformal cooling insert 12 is provided in the lower mold core 7.

[0042] In this embodiment, the guide rail forming groove 15 is used to form the guide rail groove of the air-conditioning guide rail part, and the bottom plate forming groove 16 is used to form the bottom plate of the air-conditioning guide rail part, and is integrally injection-molded, with relatively high production efficiency.

[0043] Combined Figure 3 、 Figure 4 As shown, an injection main runner 17 is provided in the injection molding plate 1, an injection hole 18 corresponding to the position of the injection main runner 17 and having a matching shape is provided in the upper template 2, an injection pressure hole 19 corresponding to the position of the injection hole 18 is provided in the straight cooling water channel upper mold core 6, and the cross-sectional area of the injection pressure hole 19 is smaller than the cross-sectional area of the injection hole 18.

[0044] In this embodiment, when injection molding is required, the molten material is injected from the injection main runner 17. The molten material flows through the injection hole 18 and then into the injection pressure hole 19. The cross-sectional area of the injection pressure hole 19 is smaller than the cross-sectional area of the injection hole 18, ensuring that the injection pressure hole 19 has the effect of pressure injection molding, improving the injection molding quality, and reducing the generation of bubbles in the molten material.

[0045] Combined Figure 3 、 Figure 4 As shown, an injection top groove 20 is connected to the bottom of the injection pressure hole 19, an injection bottom groove 21 corresponding to the position of the injection top groove 20 is provided in the lower mold core 7, and the length of the injection top groove 20 is greater than the length of the injection bottom groove 21. When the mold is closed, the injection top groove 20 is connected to the mold cavity, and the molten material flows from the injection pressure hole 19 into the injection top groove 20 and the injection bottom groove 21, and finally flows into the mold cavity through the injection top groove 20 to complete the injection molding.

[0046] A number of ejector pins 22 symmetrically arranged along the center line of the ejector plate 4 are provided at the top of the ejector plate 4. A core pusher 23 is also provided at the top of the ejector plate 4, and the core pusher 23 is in abutting and cooperating contact with the bottom of the core of the straight cooling water channel upper die 6.

[0047] In this embodiment, after injection molding and cooling are completed, the core of the straight cooling water channel upper die 6 is moved a certain distance by the core pusher 23, and then the injection-molded part is ejected by the ejector pins 22, so that interference between the cooling water channel and the ejection mechanism will not be formed, and the ejection efficiency and the quality of the part are relatively high.

[0048] A number of positioning square irons 24 symmetrically arranged along the center line of the ejector plate 4 are provided on the ejector plate 4. The positioning square irons 24 are in abutting and cooperating contact with the bottom of the lower template 3, and the positioning square irons 24 play a role in fixing and supporting the lower template 3 to prevent the lower template 3 from shifting in position during the injection molding process.

[0049] A number of ejector plate fixing shafts 25 symmetrically arranged along the center line of the bottom plate 5 are provided on the bottom plate 5. The positions of the ejector plate fixing shafts 25 correspond to those of the ejector plate 4. A number of square iron fixing shafts 26 symmetrically arranged along the center line of the bottom plate 5 are also provided on the bottom plate 5. The positions of the square iron fixing shafts 26 correspond to those of the positioning square irons 24.

[0050] In this embodiment, during mold closing, the ejector plate fixing shafts 25 are inserted into the ejector plate 4 to fix the ejector plate 4, and the square iron fixing shafts 26 are inserted into the positioning square irons 24 to fix the positioning square irons 24.

[0051] The manufacturing method of the conformal cooling forming assembly is characterized by including the following steps: S1: First, the cooling forming fixing block 11 and the conformal cooling insert 12 are placed inside the vacuum furnace body, and then the cooling forming fixing block 11 and the conformal cooling insert 12 are heated by the heating element; S2: When the temperatures of the cooling forming fixing block 11 and the conformal cooling insert 12 reach the welding temperature, a certain pressure is applied to the cooling forming fixing block 11 and the conformal cooling insert 12 by the upper and lower pressure rods, and heat preservation and pressure holding are carried out. During this process, plastic deformation first occurs at the welding interface, making the interface contact more fully, and atoms diffuse and migrate through the interface or inside the matrix, and finally a defect-free welding structure is obtained.

[0052] In this embodiment, the laminated object manufacturing with diffusion bonding method is adopted to achieve the purpose of ensuring the local forming dimensional accuracy and strength, shortening the forming cycle, and saving costs, fully exerting the advantages of conformal cooling. For the design and manufacturing of medium and large-sized conformal cooling molds, the diffusion welding process can effectively shorten the mold design cycle, simplify the mold design steps, improve the mold cooling efficiency and ensure the mold strength without being restricted by the material type, while reducing the production cost of the end user. It has the characteristics of uniform and dense welds, no re-cracking on the welding surface, no fusion line on the appearance, and the same material properties as the raw materials. It can well solve the leakage problem caused by machining the conformal cooling water channels, and at the same time avoid the limitations of material selection of 3D printing technology, the size constraints of medium and large-sized molds, and the poor mechanical properties of materials.

[0053] The working principle of the present invention is as follows:

[0054] When injection molding is required, the molten material is injected from the injection main runner 17. After flowing through the injection hole 18, the molten material flows into the injection pressure hole 19. The cross-sectional area of the injection pressure hole 19 is smaller than that of the injection hole 18, ensuring the effect of pressure injection in the injection pressure hole 19, improving the injection quality, and reducing the generation of bubbles in the molten material. The molten material flows from the injection pressure hole 19 into the plastic top groove 20 and the injection bottom groove 21, and finally flows into the cavity through the injection top groove 20 to complete the injection molding.

[0055] After the injection molding is completed, cold water is introduced into the straight cooling water channel 9 and the conformal cooling water channel 13. The "customized" water channel design that combines the local conformal cooling of the insert with the global traditional straight-through cooling is adopted to solve the problems of slow cooling speed of the traditional straight water channel, warping and incomplete filling of the product caused by uneven cooling. At the same time, through the combined cooling of the two, the distance between the water channel pipe wall and the mold cavity can be made uniform and close to the surface of the mold cavity, achieving the purpose of uniformly and quickly transferring the heat of the plastic melt, avoiding residual stress to the greatest extent and shortening the forming cycle.

[0056] When the injection molding cooling is completed, after the upper mold core 6 of the straight cooling water channel is moved a certain distance by the mold core push rod 23, the injection-molded part can be ejected by the ejector pin 22, without causing interference between the cooling water channel and the ejection mechanism, and the ejection efficiency and the part quality are relatively high.

[0057] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention.

[0058] Although terms such as injection molding plate 1, upper template 2, lower template 3, ejector plate 4, bottom plate 5, straight cooling water channel upper die core 6, lower die core 7, conformal cooling forming component 8, straight cooling water channel 9, conformal cooling placement groove 10, cooling forming fixing block 11, conformal cooling insert 12, conformal cooling water channel 13, anti - detachment rib 14, guide rail forming groove 15, bottom plate forming groove 16, injection molding main runner 17, injection hole 18, injection molding pressure hole 19, injection molding top groove 20, injection molding bottom groove 21, ejector pin 22, die core push rod 23, positioning square iron 24, ejector plate fixing shaft 25, square iron fixing shaft 26 are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention, and interpreting them as any additional restriction is contrary to the spirit of the present invention.

Claims

1. An air conditioner guide rail plastic mold, successively including an injection plate (1), an upper template (2), a lower template (3), an ejection plate (4) and a bottom plate (5), characterized in that, The upper template (2) is provided with a direct cooling water channel upper die core (6), and the lower template (3) is provided with a lower die core (7). When the mold is closed, the direct cooling water channel upper die core (6) and the lower die core (7) approach each other to form a cavity. The direct cooling water channel upper die core (6) is provided with a conformal cooling forming component (8), and the conformal cooling forming component (8) is located between the direct cooling water channel upper die core (6) and the lower die core (7). The direct cooling water channel upper die core (6) is also provided with a direct cooling water channel (9), and the direct cooling water channel (9) corresponds to the position of the conformal cooling forming component (8). The top of the ejector plate (4) is provided with a number of ejector pins (22) symmetrically arranged along the center line of the ejector plate (4). The top of the ejector plate (4) is also provided with a die core push rod (23); the die core push rod (23) is in abutting contact with the bottom of the direct cooling water channel upper die core (6). The ejector plate (4) is provided with a number of positioning square irons (24) symmetrically arranged along the center line of the ejector plate (4), and the positioning square irons (24) are in abutting contact with the bottom of the lower template (3). The bottom plate (5) is provided with a number of ejector plate fixing shafts (25) symmetrically arranged along the center line of the bottom plate (5), and the ejector plate fixing shafts (25) correspond to the position of the ejector plate (4). The bottom plate (5) is also provided with a number of square iron fixing shafts (26) symmetrically arranged along the center line of the bottom plate (5), and the square iron fixing shafts (26) correspond to the position of the positioning square irons (24). The direct cooling water channel upper die core (6) is provided with a conformal cooling placement groove (10), and the conformal cooling forming component (8) is located in the conformal cooling placement groove (10). The conformal cooling forming component (8) includes a cooling forming fixing block (11) arranged in the conformal cooling placement groove (10). The bottom of the cooling forming fixing block (11) is provided with a conformal cooling insert (12), and the conformal cooling insert (12) is provided with a conformal cooling water channel (13).

2. The air conditioner guide rail plastic mold according to claim 1, characterized in that, The conformal cooling insert (12) is arc-shaped, and the conformal cooling water channel (13) is also arc-shaped. When the mold is closed, the conformal cooling insert (12) is located in the cavity. The direct cooling water channel upper die core (6) is provided with an anti-disengagement rib (14), and the anti-disengagement rib (14) is in abutting contact with the cooling forming fixing block (11).

3. The air conditioner guide rail plastic mold according to claim 2, characterized in that, The conformal cooling insert (12) is provided with a number of guide rail forming grooves (15) symmetrically arranged along the center line of the conformal cooling insert (12), and the lower die core (7) is provided with a bottom plate forming groove (16) corresponding to the position of the conformal cooling insert (12).

4. The air conditioner guide rail plastic mold according to claim 1, characterized in that, The injection plate (1) is provided with an injection main runner (17). The upper template (2) is provided with an injection hole (18) corresponding to the position of the injection main runner (17) and having a matching shape. The direct cooling water channel upper die core (6) is provided with an injection pressure hole (19) corresponding to the position of the injection hole (18), and the cross-sectional area of the injection pressure hole (19) is smaller than the cross-sectional area of the injection hole (18).

5. The air conditioner guide rail plastic mold according to claim 4, characterized in that, The bottom of the injection pressure hole (19) is connected with an injection top groove (20). An injection bottom groove (21) corresponding to the position of the injection top groove (20) is arranged in the lower mold core (7). The length of the injection top groove (20) is greater than that of the injection bottom groove (21). When the mold is closed, the injection top groove (20) is connected with the cavity.

6. The air conditioner guide rail plastic mold according to claim 1, characterized in that, The manufacturing method of the conformal cooling forming component (8) comprises the following steps: S1: Firstly, put the cooling forming fixing block (11) and the conformal cooling insert block (12) into the internal part of a vacuum furnace body, and then heat the cooling forming fixing block (11) and the conformal cooling insert block (12) through a heating body; S2: When the temperatures of the cooling forming fixing block (11) and the conformal cooling insert block (12) reach the welding temperature, apply a certain pressure to the cooling forming fixing block (11) and the conformal cooling insert block (12) through upper and lower pressure rods, and perform heat preservation and pressure holding. In this process, plastic deformation occurs at the welding interface first, making the interface contact more fully. Atoms diffuse and migrate through the interface or inside the matrix, and finally a welding structure without defects is obtained.

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