Thin-wall part injection mold with cooling runner

Abstract

The invention relates to the technical field of child toy car production, and discloses a thin-wall part injection mold with a cooling runner, the thin-wall part injection mold comprises a base box, the rear side of the base box is fixedly connected with an assembly frame, the inner side of the assembly frame is provided with a driving assembly, and the output end of the driving assembly is fixedly connected with an upper cover plate; assembling rings are fixedly connected to the four corners of the upper cover plate, guide columns are fixedly connected to the four corners of the top of the base box, the inner sides of the assembling rings are slidably connected with the outer sides of the corresponding guide columns, an upper mold is fixedly connected to the bottom of the upper cover plate, and a cooling runner is formed in the upper mold. The device has the functions of efficient cooling and automatic demolding, the production efficiency and the product quality are improved, automatic blowing cooling is achieved through mechanical linkage after injection molding, and high-temperature deformation of a plastic part is avoided; and meanwhile, automatic demolding is synchronously completed, manual operation is omitted, labor intensity is reduced, potential damage of workers to plastic parts is reduced, and production stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of children's toy car production, in particular to a thin-walled part injection mold with cooling runner. BACKGROUND

[0002] In the field of children's toy car production, thin-walled plastic parts are widely used due to their light weight, moderate structural strength, etc. These parts are usually manufactured using injection molding process. As the core equipment, the performance of the injection mold directly affects the molding quality, production efficiency and manufacturing cost of the product. With the increasing requirements of product precision and production speed in the children's toy car market, the injection mold needs to meet the requirements of rapid cooling, stable demolding and long-term durability to adapt to the strict standards for the size stability and surface quality of thin-walled parts in large-scale production.

[0003] In the prior art, the injection mold for thin-walled parts of children's toy cars is usually composed of upper and lower molds, which are driven by a driving assembly to realize the actions of closing and opening the mold. The cooling system usually adopts the method of opening a runner inside the mold to pass in cooling water to cool the cavity; the demolding process usually relies on manual assistance or a separately arranged demolding cylinder, which uses a ejector pin or a ejector plate to eject the molded plastic part from the mold.

[0004] However, the existing technology has obvious deficiencies in actual production: on the one hand, the cooling and demolding processes lack linkage, and after cooling is completed, the separate demolding mechanism needs to be started, which prolongs the production cycle, and manual demolding is prone to deformation or surface scratches of the plastic part due to uneven operation force, affecting the product qualification rate, especially in the production of thin-walled parts, such defects are more obvious, increasing the subsequent mold repair and rework costs. Therefore, the present application provides a thin-walled part injection mold with cooling runner to solve the deficiencies in the prior art. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a thin-walled part injection mold with cooling runner to solve the problems mentioned in the background.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: A thin-walled part injection mold with a cooling runner, comprising a base box, characterized in that the rear side of the base box is fixedly connected with an assembly frame, the inner side of the assembly frame is installed with a driving assembly, the output end of the driving assembly is fixedly connected with an upper cover plate, a hydraulic cylinder is arranged in the driving assembly, the inside of the driving assembly is provided with a glue inlet, the four corners of the upper cover plate are fixedly connected with an assembly ring, the top four corners of the base box are fixedly connected with guide columns, the inner side of the assembly ring is slidably connected with the outer side of the corresponding guide column, the bottom of the upper cover plate is fixedly connected with an upper mold, the inside of the upper mold is provided with a cooling runner, the top of the base box is provided with a lower mold groove, the glue inlet is communicated with the lower mold groove, so that the molten glue is injected between the lower mold groove and the upper mold through the glue inlet, the outside of the upper mold is engaged with the inside of the lower mold groove, and the outside of the base box is provided with a cooperation mechanism on both sides.

[0007] The cooperation mechanism comprises an outer shell, a connecting block, an air cylinder and a demolding assembly, one side of the outer shell is fixedly connected with one side of the outside of the base box, the inside of the outer shell is rotatably connected with a rotating rod, the outer side of the rotating rod is fixedly connected with a cylindrical gear one and a cylindrical gear two, and the cylindrical gear one is located close to the base box.

[0008] Preferably, one end of the connecting block is fixedly connected with the outer side of the upper cover plate, the bottom of the connecting block is fixedly connected with a rack plate one, the bottom end of the rack plate one penetrates through the outer wall of the outer shell, and one side of the rack plate one is engaged with the cylindrical gear one.

[0009] Preferably, the outer side of the air cylinder is fixedly connected with one side of the outside of the base box, one end of the air cylinder is slidably connected with a sliding rod, one end of the sliding rod is fixedly connected with a rack plate two, the top of the rack plate two is engaged with the cylindrical gear two, the bottom of the rack plate two is slidably connected with the inside of the sliding groove, the bottom of the rack plate two is slidably connected with the inside of the sliding groove, the bottom of the rack plate two is slidably connected with the inside of the sliding groove, and the bottom of the rack plate two is slidably connected with the inside of the sliding groove.

[0010] Preferably, the other end of the sliding rod is fixedly connected with a piston, the outer side of the piston is slidably connected with the inside of the air cylinder, the outer side of the air cylinder is fixedly connected with an air outlet pipe, the other end of the air cylinder is provided with an air inlet, the inside of the air inlet and the air outlet pipe is provided with a one-way valve, one end of the air outlet pipe is fixedly connected with a spray head, and the spray head is installed on the top of the base box and is not below the upper cover plate.

[0011] Preferably, the demolding assembly comprises a sleeve ring, the outer side of the sleeve ring is fixedly connected with the other side of the rack plate one, the inside of the sleeve ring is slidably connected with a T-shaped rod, the bottom of the T-shaped rod is fixedly connected with a U-shaped rod, and the U-shaped rod is located in the inside of the base box.

[0012] Preferably, the inner bottom wall of the lower mold groove is provided with a movable groove, the inner bottom wall of the movable groove is fixedly connected with a limiting support, the top of the limiting support is provided with a top mold disc, the outer side of the top mold disc is slidably connected with the outer side of the movable groove, and one end of the U-shaped rod is in contact with the bottom of the top mold disc.

[0013] Preferably, the inside of the base box is provided with two cavities, the inner top wall of the cavity is fixedly connected with a spring telescopic rod, the bottom of the spring telescopic rod is fixedly connected with a pressing block, and the bottom of the pressing block is in contact with the outer side of the U-shaped rod.

[0014] Preferably, the inside of the base box is provided with two buffer assemblies, the buffer assembly comprises an arc-shaped inner cavity, the arc-shaped inner cavity is arranged in the inside of the base box, two damping telescopic rods are installed in the inside of the arc-shaped inner cavity, and the two damping telescopic rods are arranged in an axis-symmetrical mode at the top passage of the arc-shaped inner cavity.

[0015] Preferably, the output end of the damping telescopic rod is fixedly connected with a sliding block, the top of the sliding block is rotatably connected with a connecting rod, and one end of the two connecting rods is rotatably connected with a receiving block.

[0016] Preferably, the outer side of the receiving block is slidably connected with the inner wall of the top passage of the arc-shaped inner cavity, the bottom of the upper cover plate is fixedly connected with two falling blocks, and the two falling blocks are located directly above the two receiving blocks, respectively.

[0017] The application provides a thin-walled part injection mold with a cooling flow channel.

[0018] 1. The device has high-efficiency cooling and automatic demolding functions, improves production efficiency and product quality, realizes automatic air blowing and cooling after injection molding through mechanical linkage, avoids plastic part deformation at high temperature, and simultaneously completes automatic demolding, saves manual operation, reduces labor intensity, reduces potential damage of manual operation to the plastic part, and guarantees production stability.

[0019] 2. The device has a good buffer protection mechanism, prolongs the service life of the mold and guarantees injection precision, effectively buffers impact force through components such as connecting rods and damping telescopic rods when the mold is closed, reduces mold vibration and damage, the guide structure ensures accurate mold closing, improves the size precision of the plastic part, reduces mold maintenance cost, and is suitable for long-term stable production. DETAILED DESCRIPTION

[0020] Figure 1 It is a front perspective view of the application;

[0021] Figure 2 It is a right side perspective view of the application;

[0022] Figure 3 It is Figure 2Enlarged view at A;

[0023] Figure 4 Structure diagram of the cooperation mechanism of the present application;

[0024] Figure 5 Structure diagram of the demolding assembly of the present application;

[0025] Figure 6 Structure diagram of the buffer assembly of the present application; Figure 5 Enlarged view at B;

[0026] Figure 7 Structure diagram of the buffer assembly of the present application;

[0027] Figure 8 Top view of the present application;

[0028] Figure 9 Front view of the present application;

[0029] Figure 10 Side view of the present application.

[0030] Wherein, 1, base box; 2, assembly frame; 3, driving assembly; 4, upper cover plate; 5, guide column; 6, assembly ring; 7, lower mold groove; 8, upper mold; 9, cooperation mechanism; 901, outer shell; 902, connecting block; 903, rack plate one; 904, rotating rod; 905, cylindrical gear one; 906, cylindrical gear two; 907, supporting plate; 908, sliding groove; 909, rack plate two; 910, air cylinder; 911, sliding rod; 912, piston; 913, air inlet; 914, air outlet pipe; 915, spray head; 10, demolding assembly; 1001, sleeve ring; 1002, T-shaped rod; 1003, U-shaped rod; 1004, top mold disc; 1005, limiting support; 1006, movable groove; 1007, cavity; 1008, spring telescopic rod; 1009, pressing block; 11, buffer assembly; 1101, arc-shaped inner cavity; 1102, damping telescopic rod; 1103, sliding block; 1104, connecting rod; 1105, receiving block; 1106, falling block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to the drawings in the specification of the present application Figure 1 - the drawings in the specification of the present application Figure 10The embodiment of the present application provides a thin-wall part injection mold with a cooling runner, which is used for producing a part of a children's toy car. The injection mold comprises a base box 1, a mounting frame 2 fixedly connected to the rear side of the base box 1, a driving assembly 3 installed on the inner side of the mounting frame 2, a hydraulic cylinder arranged in the driving assembly 3, and a glue inlet arranged in the driving assembly 3. The driving assembly 3 is started, and the output end of the driving assembly 3 can drive the upper cover plate 4 fixedly connected to the output end to move. The four corners of the upper cover plate 4 are fixedly connected with assembly rings 6, the four corners of the top of the base box 1 are fixedly connected with guide columns 5, and the inner side of the assembly ring 6 is slidably connected with the outer side of the corresponding guide column 5. The structure design can guarantee the stability and accuracy of the upper cover plate 4 during movement.

[0033] The bottom of the upper cover plate 4 is fixedly connected with an upper mold 8, the inside of the upper mold 8 is provided with a cooling runner, the cooling runner in the inside of the upper mold 8 is used for cooling the molten plastic in the injection mold, and the molten plastic is quickly solidified to form. The top of the base box 1 is provided with a lower mold groove 7, when the upper cover plate 4 is driven by the driving assembly 3 to move downwards, the outside of the upper mold 8 can be precisely clamped with the inside of the lower mold groove 7, so as to form a closed cavity, and provide space for the injection molding of the plastic. The glue inlet is connected with the lower mold groove 7, so that the molten glue is injected into the lower mold groove 7 and the upper mold 8 through the glue inlet.

[0034] The outside of the base box 1 is provided with a cooperation mechanism 9. The cooperation mechanism 9 comprises an outer cover 901, a connecting block 902, an air cylinder 910 and a demolding assembly 10. One side of the outer cover 901 is fixedly connected to the outside of the base box 1, and provides an installation space and protection for other parts of the cooperation mechanism 9. The inside of the outer cover 901 is rotatably connected with a rotating rod 904, the outside of the rotating rod 904 is fixedly connected with a cylindrical gear one 905 and a cylindrical gear two 906, and the cylindrical gear one 905 is located close to the base box 1. One end of the connecting block 902 is fixedly connected to the outside of the upper cover plate 4, when the hydraulic cylinder of the driving assembly 3 drives the upper cover plate 4 to move upwards, the connecting block 902 will be synchronously moved upwards. The bottom of the connecting block 902 is fixedly connected with a rack plate one 903, the bottom end of the rack plate one 903 penetrates through the outer wall of the outer cover 901, and one side of the rack plate one 903 is engaged with the cylindrical gear one 905. Therefore, when the rack plate one 903 moves upwards, the cylindrical gear one 905 will be driven to rotate.

[0035] Since the cylindrical gear 905 and the cylindrical gear 906 are both fixed on the rotating rod 904, the cylindrical gear 906 will rotate synchronously under the driving of the rotating rod 904. The outer side of the air cylinder 910 is fixedly connected to the outer side of the base box 1, and the sliding rod 911 is slidably connected to the through hole at one end of the air cylinder 910. The sliding rod 911 is fixedly connected to the rack plate 909 at one end, and the rack plate 909 is in engagement with the top of the cylindrical gear 906. When the cylindrical gear 906 rotates, the rack plate 909 will be driven to move. The lower part of the outer cover 901 is provided with the supporting plate 907 with the slide groove 908 opened at the top, and the supporting plate 907 is fixedly connected to the outer side of the base box 1. The bottom of the rack plate 909 is slidably connected to the inner side of the slide groove 908, so that the stability of the rack plate 909 during movement can be ensured. The other end of the sliding rod 911 is fixedly connected to the piston 912, and the outer side of the piston 912 is slidably connected to the inner side of the air cylinder 910. When the rack plate 909 moves, the sliding rod 911 will drive the piston 912 to move in the air cylinder 910. The outer side of the air cylinder 910 is fixedly connected to the air outlet pipe 914, and the other end of the air cylinder 910 is provided with the air inlet 913. The inner sides of the air inlet 913 and the air outlet pipe 914 are both provided with one-way valves. When the piston 912 moves towards the air outlet pipe 914, the air in the air cylinder 910 will be squeezed out, and after passing through the air outlet pipe 914 to the spray head 915, it will blow and cool the formed plastic part, accelerate the cooling process of the plastic part, and improve the production efficiency.

[0036] The demolding assembly 10 comprises the sleeve ring 1001, and the outer side of the sleeve ring 1001 is fixedly connected to the other side of the rack plate 903. When the rack plate 903 continuously moves upwards, the sleeve ring 1001 will move upwards synchronously. The inner side of the sleeve ring 1001 is slidably connected to the T-shaped rod 1002, and the bottom of the T-shaped rod 1002 is fixedly connected to the U-shaped rod 1003. The U-shaped rod 1003 is located in the inner part of the base box 1. The inner bottom wall of the lower mold groove 7 is provided with the movable groove 1006, and the inner bottom wall of the movable groove 1006 is fixedly connected to the limiting support 1005. The top of the limiting support 1005 is provided with the top mold disc 1004, and the outer side of the top mold disc 1004 is slidably connected to the outer side of the movable groove 1006. When the sleeve ring 1001 drives the T-shaped rod 1002 to move upwards, one end of the U-shaped rod 1003 will lift the top mold disc 1004, and the top mold disc 1004 will lift the plastic part in the inner part of the lower mold groove 7 for demolding, thereby completing the separation process of the plastic part from the mold. Two cavities 1007 are opened in the inner part of the base box 1, the inner top wall of the cavity 1007 is fixedly connected to the spring telescopic rod 1008, the bottom of the spring telescopic rod 1008 is fixedly connected to the pressing block 1009, the bottom of the pressing block 1009 is in contact with the outer side of the U-shaped rod 1003, and the spring telescopic rod 1008 and the pressing block 1009 can buffer and reset the U-shaped rod 1003.

[0037] The inside of the base box 1 is also provided with two buffer assemblies 11, which comprise arc-shaped cavities 1101 opened in the inside of the base box 1. Two damping telescopic rods 1102 are installed in the inside of the arc-shaped cavities 1101 and arranged in the top passage of the arc-shaped cavities 1101 in an axisymmetric manner. The output end of the damping telescopic rod 1102 is fixedly connected with a sliding block 1103, the top of the sliding block 1103 is rotatably connected with a connecting rod 1104, one end of the two connecting rods 1104 is rotatably connected with a receiving block 1105, and the outside of the receiving block 1105 is slidably connected with the inner wall of the top passage of the arc-shaped cavity 1101. The bottom of the upper cover plate 4 is fixedly connected with two falling blocks 1106, and the two falling blocks 1106 are respectively located directly above the two receiving blocks 1105. When the upper die 8 moves downward to perform die closing, the falling block 1106 will be in contact with the receiving block 1105, then the impact force is transmitted to the two connecting rods 1104, and then the sliding block 1103 moves to extrude the damping telescopic rod 1102, so that the impact force generated when the upper die 8 moves downward is buffered and removed, avoiding damage to the die due to excessive impact force, prolonging the service life of the die.

[0038] Specifically, the device is specially used for producing parts of children's toy cars. In the injection molding process, the cooling runner inside the upper mold 8 can quickly cool the molten plastic injected into the mold cavity, accelerate its solidification and forming, and ensure the forming quality and precision of thin-walled parts. After the injection molding is completed, the hydraulic cylinder of the driving assembly 3 is started, and the output end will drive the upper cover plate 4 to move upward along the guide column 5 stably. During this process, the connecting block 902 moves upward synchronously with the upper cover plate 4, and then drives the rack plate one 903 to move upward. The meshing action of the rack plate one 903 and the cylindrical gear one 905 makes the cylindrical gear one 905 rotate. Since the cylindrical gear one 905 and the cylindrical gear two 906 are both fixed on the rotating rod 904, the rotating rod 904 will drive the cylindrical gear two 906 to rotate synchronously. The meshing of the cylindrical gear two 906 and the rack plate two 909 will make the rack plate two 909 slide stably in the sliding groove 908 of the supporting plate 907, and then drive the sliding rod 911 to push the piston 912 to move in the direction of the air outlet pipe 914, so that the air in the air cylinder 910 is sprayed out from the nozzle 915 through the air outlet pipe 914. The sprayed air flow can further blow and cool the just-formed plastic parts to avoid deformation due to high temperature, and at the same time, it can accelerate the cooling speed to improve the production efficiency. In addition, when the rack plate one 903 continuously moves upward, the sleeve ring 1001 connected thereto will drive the T-shaped rod 1002 to move upward, and the T-shaped rod 1002 will drive the U-shaped rod 1003 to move synchronously. One end of the U-shaped rod 1003 will lift the top mold disc 1004, and the top mold disc 1004 will slide upward in the movable groove 1006, thereby lifting the plastic parts in the lower mold groove 7 to realize automatic demolding, which saves the trouble of manual demolding, reduces the labor intensity and avoids damage to the plastic parts caused by manual operation. When the upper mold 8 moves downward under the driving of the hydraulic cylinder of the driving assembly 3, the falling block 1106 at the bottom of the upper cover plate 4 will first contact the receiving block 1105. The impact force generated during the clamping is transmitted to the two connecting rods 1104 through the receiving block 1105, which drives the connecting rod 1104 to push the sliding block 1103 to move in the arc-shaped inner cavity 1101 and press the damping telescopic rod 1102. The telescopic action of the damping telescopic rod 1102 can effectively buffer and remove the impact force, reduce the vibration and damage of the mold during clamping, prolong the service life of the mold, and at the same time, ensure the accuracy of the clamping to ensure the dimensional accuracy of the injection molded parts.

[0039] Working principle: the device is used for producing children's toy car parts, the cooling flow channel in the upper die 8 is used for cooling during injection molding, then the hydraulic cylinder of the driving assembly 3 is started to drive the upper cover plate 4 to move upwards, at this time the connecting block 902 drives the rack plate one 903 to move upwards, and then the cylindrical gear one 905 rotates, then under the drive of the rotating rod 904, the cylindrical gear two 906 rotates synchronously, and then the rack plate two 909 moves, and then the sliding rod 911 drives the piston 912 to move to the air outlet pipe 914, and the air in the air cylinder 910 is extruded and discharged, and after passing through the air outlet pipe 914 to the spray head 915, the formed plastic part is blown and cooled; in addition, when the rack plate one 903 continuously moves upwards, the sleeve ring 1001 drives the T-shaped rod 1002 to move upwards, and then one end of the U-shaped rod 1003 lifts the top die disc 1004, and the top die disc 1004 lifts the plastic part in the lower die groove 7 to demold; when the upper die 8 moves downwards to close the mold, the falling block 1106 contacts the bearing block 1105, and then the impact force is transmitted to the two connecting rods 1104, and then the sliding block 1103 moves to extrude the damping telescopic rod 1102, so that the impact force is buffered and removed.

[0040] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A thin-walled part injection mold with cooling runner, comprising a base box (1), characterized in that, The rear side of the base box (1) is fixedly connected with an assembling frame (2), the inner side of the assembling frame (2) is provided with a driving assembly (3), the output end of the driving assembly (3) is fixedly connected with an upper cover plate (4), a hydraulic cylinder is arranged in the driving assembly (3), the inside of the driving assembly (3) is provided with a glue inlet, the four corners of the upper cover plate (4) are fixedly connected with assembling rings (6), the top of the base box (1) is fixedly connected with guide columns (5) at four corners, the inner side of the assembling ring (6) is slidably connected with the outer side of the corresponding guide column (5), the bottom of the upper cover plate (4) is fixedly connected with an upper mold (8), the inside of the upper mold (8) is provided with a cooling flow channel, the top of the base box (1) is provided with a lower mold groove (7), the glue inlet is communicated with the lower mold groove (7), so that the molten glue is injected between the lower mold groove (7) and the upper mold (8) through the glue inlet, the outside of the upper mold (8) is clamped with the inside of the lower mold groove (7), and the outside of the base box (1) is provided with a cooperation mechanism (9) on both sides. The cooperation mechanism (9) comprises an outer cover (901), a connecting block (902), an air cylinder (910) and a demolding assembly (10), one side of the outer cover (901) is fixedly connected with the outside of the base box (1), the inside of the outer cover (901) is rotatably connected with a rotating rod (904), the outer side of the rotating rod (904) is fixedly connected with a cylindrical gear one (905) and a cylindrical gear two (906), and the cylindrical gear one (905) is located close to the base box (1).

2. The thin-walled part injection mold with a cooling runner according to claim 1, wherein, One end of the connecting block (902) is fixedly connected with the outer side of the upper cover plate (4), the bottom of the connecting block (902) is fixedly connected with a rack plate one (903), the bottom end of the rack plate one (903) penetrates through the outer wall of the outer cover (901), and one side of the rack plate one (903) is engaged with the cylindrical gear one (905).

3. The thin-walled part injection mold with a cooling runner according to claim 2, wherein, The outer side of the air cylinder (910) is fixedly connected with the outside of the base box (1), one end of the air cylinder (910) is slidably connected with a sliding rod (911) at a through hole, one end of the sliding rod (911) is fixedly connected with a rack plate two (909), the top of the rack plate two (909) is engaged with the cylindrical gear two (906), the bottom of the rack plate two (909) is slidably connected with the inside of the sliding groove (908).

4. The thin-walled part injection mold with a cooling runner according to claim 3, wherein, The other end of the sliding rod (911) is fixedly connected with a piston (912), the outer side of the piston (912) is in sliding connection with the inner side of the air cylinder (910), the outer side of the air cylinder (910) is fixedly connected with an air outlet pipe (914), the other end of the air cylinder (910) is provided with an air inlet (913), the interiors of the air inlet (913) and the air outlet pipe (914) are provided with one-way valves, one end of the air outlet pipe (914) is fixedly connected with a spray head (915), and the spray head (915) is installed on the top of the base box (1) and does not under the upper cover plate (4).

5. The thin-walled part injection mold with a cooling runner according to claim 1, wherein, The demolding assembly (10) comprises a sleeve ring (1001), the outer side of the sleeve ring (1001) is fixedly connected to the other side of the rack plate (903), and the inner side of the sleeve ring (1001) is in sliding connection with a T-shaped rod (1002).

6. The thin-walled part injection mold with a cooling runner according to claim 5, wherein, The inner bottom wall of the lower mold groove (7) is provided with a movable groove (1006), the inner bottom wall of the movable groove (1006) is fixedly connected with a limiting support (1005), the top of the limiting support (1005) is provided with a top mold disc (1004), the outer side of the top mold disc (1004) is in sliding connection with the outer side of the movable groove (1006), and one end of the U-shaped rod (1003) is in contact with the bottom of the top mold disc (1004).

7. The thin-walled part injection mold with a cooling runner according to claim 6, wherein The inside of the base box (1) is provided with two cavities (1007), the inner top wall of the cavity (1007) is fixedly connected with a spring telescopic rod (1008), the bottom of the spring telescopic rod (1008) is fixedly connected with a pressing block (1009), and the bottom of the pressing block (1009) is in contact with the outer side of the U-shaped rod (1003).

8. The thin-walled part injection mold with a cooling runner according to claim 1, wherein, The inside of the base box (1) is provided with two buffer assemblies (11), the buffer assembly (11) comprises an arc-shaped inner cavity (1101), the arc-shaped inner cavity (1101) is arranged in the inside of the base box (1), and two damping telescopic rods (1102) are arranged in the arc-shaped inner cavity (1101) in an axis-symmetrical manner.

9. The thin-walled part injection mold with a cooling runner according to claim 8, wherein, The output end of the damping telescopic rod (1102) is fixedly connected with a sliding block (1103), the top of the sliding block (1103) is rotatably connected with a connecting rod (1104), and one end of the connecting rod (1104) is rotatably connected with a receiving block (1105).

10. The thin-walled part injection mold with a cooling runner according to claim 9, wherein, The outer side of the receiving block (1105) is in sliding connection with the inner wall of the top passage of the arc-shaped inner cavity (1101), and the bottom of the upper cover plate (4) is fixedly connected with two falling blocks (1106). The outer side of the receiving block (1105) is in sliding connection with the inner wall of the top passage of the arc-shaped inner cavity (1101), and the bottom of the upper cover plate (4) is fixedly connected with two falling blocks (1106).

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