An injection molding mold for the production of motorcycle rear trunk

Abstract

The invention discloses an injection molding mold for producing a motorcycle rear trunk, and the invention relates to the technical field of injection molds. The invention comprises an upper mold, the outer side surface of the upper mold is fixedly connected to the side of the telescopic rod away from the shell, the exhaust pipe is arranged at the top center of the upper mold, and the surface of the exhaust pipe is fixedly connected to the inner side surface of the upper mold, the bottom of the lower mold is fixedly connected to the top of the base, the outer side surface of the base is fixedly connected to the inner wall of the shell, the cooling component is arranged inside the shell, and the cooling component is fixedly connected to the bottom of the base, the injection molding component is arranged at the interval between the shell and the cooling component, and the injection molding component is fixedly connected to the bottom of the base, the telescopic rod is arranged, and automatic mold closing and demoulding are realized, and the cooling component can accelerate the cooling of the raw material, increase the injection molding speed, and improve the efficiency. Through the injection molding component, the air between the upper mold and the lower mold is ejected, which can reduce the exhaust operation before injection molding, making the operation more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection molding mold for producing a motorcycle rear trunk. Background Art

[0002] Motorcycle rear trunk injection molding is a process for manufacturing motorcycle rear trunks. The injection molding process usually includes the following steps: mold design and manufacturing, designing and manufacturing precise injection molds according to the shape and size requirements of the motorcycle rear trunk, material preparation, selecting suitable plastic materials, such as polypropylene, polyethylene or engineering plastics, and performing pretreatment such as drying; injection molding, heating plastic particles to a molten state, injecting the molten plastic into the mold cavity through the screw of the injection molding machine, cooling and solidifying, in the mold, the molten plastic quickly cools and solidifies to form the shape of the motorcycle rear trunk, demoulding, after the solidification is completed, opening the mold and taking out the molded rear trunk;

[0003] During the injection molding process, the air in the mold should be exhausted as much as possible. The structure of the rear trunk requires the mold to be divided into two parts. Frequent mold closing requires frequent exhaust, which makes the operation more complicated. Insufficient exhaust can easily cause bubbles or gaps inside the injection molded parts, affecting the strength of the injection molded parts. At the same time, a pouring gate will be generated on the molded injection molded parts after molding. The pouring gate will affect the demolding of the injection molded parts and cause a certain amount of waste of raw materials. Therefore, we proposed an injection molding mold for the production of motorcycle rear trunks. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an injection molding mold for producing a motorcycle rear trunk, comprising:

[0005] A housing, and a telescopic rod disposed on the top of the housing;

[0006] A molding mechanism, wherein the molding mechanism has a cooling structure for cooling during demoulding;

[0007] The top of the shell is fixedly connected to the bottom of the telescopic rod, the bottom of the forming mechanism is fixedly connected to the top of the shell, and one end of the telescopic rod away from the shell is fixedly connected to the surface of the forming mechanism;

[0008] Wherein, the forming mechanism comprises:

[0009] An upper mold, the inner side of which is arranged in the shape of the outer side of the motorcycle rear trunk, and an exhaust pipe arranged on the top of the upper mold, the exhaust pipe being controlled by a valve;

[0010] A lower mold, the outer side of which is configured to be in the shape of the inner side of a motorcycle rear trunk, and a base disposed at the bottom of the lower mold;

[0011] A cooling component, the cooling component having a pipeline structure, is used to cool the formed rear trunk;

[0012] An injection molding component, the injection molding component has four injection ports for injecting raw materials;

[0013] The outer side surface of the upper mold is fixedly connected to the side of the telescopic rod away from the shell, and the exhaust pipe is arranged at the top center of the upper mold. The surface of the exhaust pipe is fixedly connected to the inner side of the upper mold, the bottom of the lower mold is fixedly connected to the top of the base, the outer side of the base is fixedly connected to the inner wall of the shell, the cooling component is arranged inside the shell, and the cooling component is fixedly connected to the bottom of the base, the injection molding component is arranged at the interval between the shell and the cooling component, and the injection molding component is fixedly connected to the bottom of the base, the telescopic rod is started to drive the upper mold and the lower mold to close the mold, the injection molding component is started, the injection molding component inputs raw materials to the interval between the upper mold and the lower mold, the raw materials rise evenly, and the air is discharged from the exhaust pipe, when the raw materials enter the exhaust pipe, close its valve, at this time the raw materials fill the interval between the upper mold and the lower mold, at this time start the cooling component, the cooling component cools the raw materials, and then completes the molding, finally start the telescopic rod, completes the demoulding, sets the telescopic rod, realizes automatic mold closing and demoulding, and the cooling component can accelerate the cooling of the raw materials, improve the injection molding speed, and improve the efficiency, through the injection molding component, the air between the upper mold and the lower mold is ejected, the exhaust operation before injection molding can be reduced, and the operation is more convenient.

[0014] Further, a first hexagonal hole is opened on one side of the upper mold close to the shell, and a plurality of the first hexagonal holes are arranged along the circumference of the upper mold. A second hexagonal hole is opened on one side of the lower mold close to the shell, and a plurality of the second hexagonal holes are arranged along the circumference of the lower mold. Tube bodies are arranged inside the plurality of the first hexagonal holes and the second hexagonal holes, and the surface of the tube body inside the upper mold is slidably connected to the inner wall of the first hexagonal hole, and the surface of the tube body inside the lower mold is fixedly connected to the inner wall of the second hexagonal hole, and the tube body It is arranged to be hexagonal, and the tube body located inside the upper mold is fixedly connected to the top of the base on one side close to the outer shell. A filling component is arranged inside the base, and a first hexagonal hole is arranged to cooperate with the tube body to limit the lifting and lowering of the upper mold, thereby ensuring that the upper mold and the lower mold are aligned when the mold is closed, and ensuring that the upper mold will not be offset when demolding to avoid scratching the trunk after molding. At the same time, the arrangement of the first hexagonal hole and the second hexagonal hole constitutes a honeycomb structure, which can reduce the quality of the mold while enhancing the pressure resistance of the mold and maintaining the molding effect.

[0015] Furthermore, the base includes a bottom plate, the outer side surface of the bottom plate is fixedly connected to the inner wall of the shell, the tube body located inside the upper mold is fixedly connected to the side of the bottom plate away from the shell, the inner side surface of the bottom plate is fixedly connected with a connecting plate, the connecting plate is arranged at the four corners of the bottom plate, and the four connecting plates are fixedly connected to the outer side surface of the lower mold on one side close to the center of the bottom plate, and there is a gap between the lower mold and the bottom plate, cooling water is injected from the center of the bottom plate, and the cooling water enters the lower mold. Due to the gap between the bottom plate and the lower mold, the cooling water will gradually fill the gap between the bottom plate and the connecting plate, and the tube body located inside the lower mold is connected to the inner cavity of the lower mold through the gap between the bottom plate and the connecting plate to form a communicating vessel, thereby ensuring that the cooling water level inside the tube body and the lower mold is always equal, ensuring that no residue is generated when the cooling water is discharged.

[0016] Furthermore, a circular groove is provided on one side of the bottom plate away from the outer shell, and the circular groove is provided directly below the tube body located inside the upper mold, and the circular groove is connected with the gap between the bottom plate and the connecting plate. The circular groove is connected with the gap between the bottom plate and the connecting plate through the circular groove, so that the tube body inside the upper mold, the tube body inside the lower mold, and the inner cavity of the lower mold together constitute a communicating vessel, thereby ensuring that the cooling water heights inside the three are the same, ensuring that the cooling water is discharged smoothly after cooling is completed, avoiding cooling water residue that affects the next injection molding process, and avoiding premature solidification of the raw material. During the cooling process, the tube body inside the upper mold, the tube body inside the lower mold, and the inner cavity of the lower mold are all filled with cooling water, so that both the inside and outside of the injection molded part can be cooled during cooling to ensure the cooling effect, so that the injection molded part can be demolded faster.

[0017] Furthermore, the filling component includes triangular blocks, and the triangular blocks are provided in four groups, and each group of the triangular blocks is symmetrically arranged at the interval between two adjacent connecting plates, the sides of the two triangular blocks that are close to each other are rotationally connected, and the sides of the two triangular blocks that are far away from each other are arranged in an arc and are slidably connected with the surface of the connecting plate, and the triangular blocks separate the interval between the bottom plate and the upper mold and the lower mold to prevent cooling water from entering the interval between the upper mold and the lower mold, and the raw materials are injected into the interval between the upper mold and the lower mold, and the raw materials enter the top of the triangular blocks. Through the symmetrically arranged triangular blocks, the inclined tops can converge the raw materials on each side to the center, ensuring that when the raw materials are injected from the four corners, the center can be filled to avoid gaps or bubbles, and when the valve of the exhaust pipe is closed, the raw materials continue to be filled, and the arc surface of the triangular block slides on the surface of the connecting plate, and the triangular block enters the interval between the connecting plate and the bottom plate. The top of the triangular block and the top of the connecting plate form a complete plane, ensuring that there will be no extra grooves at the bottom of the molded injection molded part, and at the same time, the raw materials can continue to be filled to ensure that the interval between the upper mold and the lower mold can be completely filled to avoid gaps or bubbles.

[0018] Furthermore, a groove is provided on one side of the triangular block close to the bottom plate, and the groove is provided on the side where two adjacent triangular blocks are away from each other, a spring is fixedly connected to the top of the inner wall of the groove, and one end of the spring away from the triangular block is fixedly connected to the side of the bottom plate away from the outer shell. The spring is provided so that it can be reset after demolding to ensure the use of the triangular block for the next injection molding, and the bottom of the triangular block can contact the cooling water on the top of the bottom plate to ensure cooling and demolding of the bottom of the injection molded part to avoid adhesion between the injection molded part and the triangular block.

[0019] Furthermore, the cooling component includes a water inlet pipe, the surface of the water inlet pipe is fixedly connected to the center of the bottom plate, the side of the water inlet pipe away from the bottom plate is fixedly connected to a first pump body, the side of the first pump body away from the water inlet pipe is fixedly connected to a water injection pipe, one end of the water injection pipe away from the first pump body is bent and extended to the outside of the shell, and the surface of the water injection pipe is fixedly connected to the inner side of the shell, the water pipe is connected through the water injection pipe, the first pump body is started, water is injected into the interior of the lower mold, and cooling water is finally filled into the interior of the lower mold and the tube body. After cooling is completed, the cooling water is pumped out. Since the water inlet pipe is arranged at the center of the bottom plate and is at the bottom of the entire communicating vessel, the cooling water inside the communicating vessel formed by the lower mold and the tube body can be completely pumped out to ensure that it will not affect the subsequent injection molding.

[0020] Furthermore, the injection molding component includes a branch pipe, which is symmetrically arranged at the four corners of the base plate, and the branch pipe passes through the bottom of the base plate and the connecting plate, and extends to the gap between the upper mold and the lower mold. The raw material is injected into the gap between the upper mold and the lower mold through the branch pipe. The raw material rises in a V shape around the upper mold and the lower mold with the help of triangular blocks, which can gather the air to the middle and finally completely fill the surroundings of the gap between the upper mold and the lower mold. Finally, the air is completely discharged through the exhaust pipe to complete the injection molding of the top.

[0021] Furthermore, a cylinder is provided on the side of the branch pipe away from the base plate, the surface of the cylinder is fixedly connected to the surfaces of several branch pipes, the side of the cylinder away from the base plate is fixedly connected to the second pump body, the side of the second pump body away from the cylinder is fixedly connected to an injection molding tube, one end of the injection molding tube away from the second pump body extends to the outside of the shell, and the surface of the injection molding tube is fixedly connected to the inner side surface of the shell, the injection molding tube is connected to the raw material, the second pump body is started, and the raw material passes through the injection molding tube, the second pump body, the cylinder, and the branch pipe in sequence.

[0022] Furthermore, the surface of the branch pipe located at the interval between the bottom plate and the connecting plate is bent inwardly, and a hollow tube is arranged outside the bent position of the branch pipe, and both ends of the hollow tube are respectively fixedly connected to the sides of the bottom plate and the connecting plate that are close to each other, and the interior of the hollow tube is vacuum-arranged. The inwardly bent surface can cool the pouring port into a slender column, and can better separate it from the uncooled raw material in the branch pipe during demoulding, and the vacuum interior of the hollow tube can insulate the bent position of the branch pipe, so that the bent position will not cool rapidly after the injection is stopped, and the injection molded part can be demoulded within the time difference between the injection molded part cooling down and the pouring port not cooling down, so as to avoid the generation of a larger pouring port and the waste of raw materials.

[0023] The present invention has the beneficial effects:

[0024] 1. The present invention sets a molding mechanism, and the cooling component can accelerate the cooling of the raw materials, increase the injection speed, and improve the efficiency. The air between the upper mold and the lower mold is ejected through the injection molding component, which can reduce the exhaust operation before injection molding and make the operation more convenient. The first hexagonal hole cooperates with the tube body to limit the lifting and lowering of the upper mold, ensure the alignment of the upper mold and the lower mold when the mold is closed, and ensure that the upper mold will not be offset during demolding to avoid scratching the trunk after molding. At the same time, the setting of the first hexagonal hole and the second hexagonal hole constitutes a honeycomb structure, which can reduce the quality of the mold while enhancing the pressure resistance of the mold and maintaining the molding effect.

[0025] 2. The present invention provides a circular groove which is connected with the gap between the bottom plate and the connecting plate, so that the tube body inside the upper mold, the tube body inside the lower mold, and the inner cavity of the lower mold together constitute a communicating vessel, thereby ensuring that the cooling water heights inside the three are the same, ensuring that the cooling water is discharged smoothly after cooling is completed, avoiding cooling water residue that affects the next injection molding process and avoids premature solidification of the raw materials. During the cooling process, the tube body inside the upper mold, the tube body inside the lower mold, and the inner cavity of the lower mold are all filled with cooling water, so that both the inner and outer sides of the injection molded part can be cooled during cooling to ensure the cooling effect, so that the injection molded part can be demolded faster.

[0026] 3. The present invention sets a filling component, and the triangular block separates the gap between the bottom plate and the upper and lower molds to prevent cooling water from entering the gap between the upper and lower molds. The raw materials are injected into the gap between the upper and lower molds, and the raw materials enter the top of the triangular block. The symmetrically arranged triangular blocks have inclined tops, which can converge the raw materials on each side to the center, ensuring that when the raw materials are injected from the four corners, the center can be filled to avoid gaps or bubbles. After the valve of the exhaust pipe is closed, the raw materials continue to be filled, and the arc surface of the triangular block slides on the surface of the connecting plate and enters the gap between the connecting plate and the bottom plate. The top of the triangular block and the top of the connecting plate form a complete plane, ensuring that there will be no extra grooves at the bottom of the molded injection molded part, and the raw materials can continue to be filled to ensure that the gap between the upper and lower molds can be completely filled to avoid gaps or bubbles.

[0027] 4. The present invention provides a branch pipe, and the inwardly curved surface of the branch pipe can cool the pouring port into a slender column, so that it can be better separated from the uncooled raw material in the branch pipe during demoulding. The vacuum interior of the hollow tube can insulate the bending position of the branch pipe, so that the bending position will not cool down quickly after the injection is stopped. The injection molded part can be demoulded within the time difference between the cooling of the injection molded part and the pouring port not cooling down, so as to avoid the generation of a larger pouring port and the waste of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an injection molding mold for producing a motorcycle rear trunk of the present invention;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper mold of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the upper mold of the present invention;

[0031] Figure 4 It is a schematic diagram of the tube structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the triangular block structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the cross-sectional structure of the bottom plate of the present invention;

[0034] Figure 7 This is a schematic diagram of the filling assembly structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the cooling component of the present invention;

[0036] Fig. 9 This is a schematic diagram of the structure of the injection molding component of the present invention;

[0037] Fig.10 It is a schematic diagram of the cross-sectional structure of the branch pipe of the present invention.

[0038] In the figure: 1. shell; 2. telescopic rod; 3. molding mechanism; 31. upper mold; 32. exhaust pipe; 33. lower mold; 34. base; 341. bottom plate; 342. connecting plate; 343. circular groove; 35. cooling component; 351. water injection pipe; 352. first pump body; 353. water inlet pipe; 36. injection molding component; 361. injection molding pipe; 362. second pump body; 363. cylinder; 364. branch pipe; 365. hollow tube; 37. first hexagonal hole; 38. second hexagonal hole; 39. filling component; 391. triangle block; 392. slot body; 393. spring; 310. tube body. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0040] Example 1, please refer to Figure 1-Figure 7 The present invention is an injection molding mold for producing a motorcycle rear trunk, comprising:

[0041] A housing 1, and a telescopic rod 2 arranged on the top of the housing 1;

[0042] The molding mechanism 3 has a cooling structure for cooling during demoulding;

[0043] The top of the housing 1 is fixedly connected to the bottom of the telescopic rod 2, the bottom of the forming mechanism 3 is fixedly connected to the top of the housing 1, and one end of the telescopic rod 2 away from the housing 1 is fixedly connected to the surface of the forming mechanism 3;

[0044] Wherein, the forming mechanism 3 comprises:

[0045] An upper mold 31, the inner side of which is configured to be in the shape of the outer side of a motorcycle rear trunk, and an exhaust pipe 32 disposed on the top of the upper mold 31, the exhaust pipe 32 being controlled by a valve;

[0046] A lower mold 33, the outer side of which is configured to be in the shape of the inner side of a motorcycle rear trunk, and a base 34 disposed at the bottom of the lower mold 33;

[0047] A cooling component 35, the cooling component 35 having a pipeline structure, is used to cool the formed rear trunk;

[0048] An injection molding assembly 36, the injection molding assembly 36 having four injection ports for injecting raw materials;

[0049] The outer side surface of the upper mold 31 is fixedly connected to the side of the telescopic rod 2 away from the shell 1, the exhaust pipe 32 is arranged at the top center of the upper mold 31, and the surface of the exhaust pipe 32 is fixedly connected to the inner side surface of the upper mold 31, the bottom of the lower mold 33 is fixedly connected to the top of the base 34, the outer side surface of the base 34 is fixedly connected to the inner wall of the shell 1, the cooling component 35 is arranged inside the shell 1, and the cooling component 35 is fixedly connected to the bottom of the base 34, the injection molding component 36 is arranged at the gap between the shell 1 and the cooling component 35, and the injection molding component 36 is fixedly connected to the bottom of the base 34, the telescopic rod 2 is started, the upper mold 31 and the lower mold 33 are driven to close the mold, the injection molding component 36 is started, and the injection molding component 36 inputs raw materials into the gap between the upper mold 31 and the lower mold 33. The material rises evenly, thereby exhausting the air from the exhaust pipe 32. When the raw material enters the exhaust pipe 32, its valve is closed. At this time, the raw material fills the gap between the upper mold 31 and the lower mold 33. At this time, the cooling component 35 is started, and the cooling component 35 cools the raw material, and then the molding is completed. Finally, the telescopic rod 2 is started to complete the demoulding. The telescopic rod 2 is set to realize automatic mold closing and demoulding. The cooling component 35 can accelerate the cooling of the raw material, increase the injection speed, and improve the efficiency. The air between the upper mold 31 and the lower mold 33 is ejected through the injection molding component 36, which can reduce the exhaust operation before injection molding, making the operation more convenient.

[0050] A first hexagonal hole 37 is provided on one side of the upper mold 31 close to the housing 1, and a plurality of the first hexagonal holes 37 are arranged along the circumference of the upper mold 31. A second hexagonal hole 38 is provided on one side of the lower mold 33 close to the housing 1, and a plurality of the second hexagonal holes 38 are arranged along the circumference of the lower mold 33. A tube body 310 is provided inside each of the plurality of first hexagonal holes 37 and the second hexagonal holes 38. The surface of the tube body 310 located inside the upper mold 31 is slidably connected to the inner wall of the first hexagonal hole 37, and the surface of the tube body 310 located inside the lower mold 33 is fixedly connected to the inner wall of the second hexagonal hole 38, and the tube body 310 is provided It is hexagonal, and the tube body 310 located inside the upper mold 31 is fixedly connected to the top of the base 34 near the side of the shell 1. A filling component 39 is arranged inside the base 34. A first hexagonal hole 37 is arranged to cooperate with the tube body 310, which can limit the lifting and lowering of the upper mold 31 to ensure that the upper mold 31 and the lower mold 33 are aligned when the molds are closed, and to ensure that the upper mold 31 will not be offset when the molds are demolded to avoid scratching the trunk after molding. At the same time, the setting of the first hexagonal hole 37 and the second hexagonal hole 38 constitutes a honeycomb structure, which can reduce the quality of the mold while enhancing the pressure resistance of the mold to maintain the molding effect.

[0051] The base 34 includes a bottom plate 341, the outer side of the bottom plate 341 is fixedly connected to the inner wall of the shell 1, the tube body 310 located inside the upper mold 31 is fixedly connected to the side of the bottom plate 341 away from the shell 1, and the inner side of the bottom plate 341 is fixedly connected to a connecting plate 342, which is arranged at the four corners of the bottom plate 341, and the side of the four connecting plates 342 close to the center of the bottom plate 341 is fixedly connected to the outer side of the lower mold 33, and there is a gap between the lower mold 33 and the bottom plate 341, so that Cooling water is injected into the center of the bottom plate 341, and the cooling water enters the lower mold 33. Due to the gap between the bottom plate 341 and the lower mold 33, the cooling water will gradually fill the gap between the bottom plate 341 and the connecting plate 342. The tube body 310 located inside the lower mold 33 is connected to the inner cavity of the lower mold 33 through the gap between the bottom plate 341 and the connecting plate 342 to form a communicating vessel, thereby ensuring that the cooling water levels in the tube body 310 and the lower mold 33 are always equal, ensuring that no residue is generated when the cooling water is discharged.

[0052] A circular groove 343 is provided on one side of the bottom plate 341 away from the shell 1. The circular groove 343 is provided just below the tube body 310 located inside the upper mold 31, and the circular groove 343 is communicated with the gap between the bottom plate 341 and the connecting plate 342. The circular groove 343 is communicated with the gap between the bottom plate 341 and the connecting plate 342 through the circular groove 343, so that the tube body 310 inside the upper mold 31, the tube body 310 inside the lower mold 33, and the inner cavity of the lower mold 33 together constitute a communicating vessel, thereby ensuring that the cooling water heights inside the three are the same, ensuring that the cooling water is smoothly discharged after the cooling is completed, avoiding cooling water residue that affects the next injection molding process and preventing the raw material from solidifying prematurely. During the cooling process, the tube body 310 inside the upper mold 31, the tube body 310 inside the lower mold 33, and the inner cavity of the lower mold 33 are all filled with cooling water, so that both the inner and outer sides of the injection molded part can be cooled during cooling to ensure the cooling effect, so that the injection molded part can be demolded faster.

[0053] The filling assembly 39 includes triangular blocks 391, and the triangular blocks 391 are provided in four groups. Each group of triangular blocks 391 is symmetrically arranged at the interval between two adjacent connecting plates 342. The two triangular blocks 391 are rotatably connected on the side close to each other, and the two triangular blocks 391 are arranged in an arc on the side away from each other, and are slidably connected with the surface of the connecting plate 342. The triangular blocks 391 separate the bottom plate 341 from the interval between the upper mold 31 and the lower mold 33 to prevent cooling water from entering the interval between the upper mold 31 and the lower mold 33. The raw material is injected into the interval between the upper mold 31 and the lower mold 33, and the raw material enters the top of the triangular block 391. Through the symmetrically arranged triangular blocks 391, its inclination The inclined top can gather the raw materials on each side to the center, ensuring that when the raw materials are injected from the four corners, the center can be filled to avoid gaps or bubbles. When the valve of the exhaust pipe 32 is closed, the raw materials continue to be filled in, and the arc surface of the triangular block 391 slides on the surface of the connecting plate 342. The triangular block 391 enters the gap between the connecting plate 342 and the bottom plate 341. The top of the triangular block 391 and the top of the connecting plate 342 form a complete plane, ensuring that there will be no extra grooves at the bottom of the molded injection molded part. At the same time, the raw materials can continue to be filled to ensure that the gap between the upper mold 31 and the lower mold 33 can be completely filled to avoid gaps or bubbles.

[0054] A groove 392 is provided on one side of the triangular block 391 close to the bottom plate 341, and the groove 392 is provided on the side where two adjacent triangular blocks 391 are away from each other, a spring 393 is fixedly connected to the top of the inner wall of the groove 392, and one end of the spring 393 away from the triangular block 391 is fixedly connected to the side of the bottom plate 341 away from the shell 1. The spring 393 is provided to complete reset after demoulding to ensure the use of the triangular block 391 for the next injection molding, and the bottom of the triangular block 391 can contact the cooling water on the top of the bottom plate 341 to ensure cooling and demoulding of the bottom of the injection molded part to avoid adhesion between the injection molded part and the triangular block 391.

[0055] Example 2, please refer to Figure 1-Figure 10 The cooling component 35 includes a water inlet pipe 353, the surface of which is fixedly connected to the center of the bottom plate 341, a first pump body 352 is fixedly connected to the side of the water inlet pipe 353 away from the bottom plate 341, a water injection pipe 351 is fixedly connected to the side of the first pump body 352 away from the water inlet pipe 353, one end of the water injection pipe 351 away from the first pump body 352 is bent and extends to the outside of the shell 1, and the surface of the water injection pipe 351 is fixedly connected to the inner side of the shell 1, the water pipe is connected through the water injection pipe 351, the first pump body 352 is started, and water is injected into the lower mold 33, and the cooling water is finally filled into the lower mold 33 and the tube body 310. After cooling is completed, the cooling water is pumped out. Since the water inlet pipe 353 is arranged at the center of the bottom plate 341 and is at the bottom of the entire communicating vessel, the cooling water in the communicating vessel formed by the lower mold 33 and the tube body 310 can be completely pumped out to ensure that it will not affect the subsequent injection molding.

[0056] The injection molding assembly 36 includes a branch pipe 364, which is symmetrically arranged at the four corners of the bottom plate 341, and the branch pipe 364 passes through the bottom of the bottom plate 341 and the connecting plate 342, and extends to the gap between the upper mold 31 and the lower mold 33. The raw material is injected into the gap between the upper mold 31 and the lower mold 33 through the branch pipe 364. The raw material rises in a V shape around the upper mold 31 and the lower mold 33 with the cooperation of the triangular block 391, which can gather the air to the middle, and finally completely fill the surroundings of the gap between the upper mold 31 and the lower mold 33. Finally, the air is completely discharged through the exhaust pipe 32 to complete the injection molding of the top.

[0057] A cylinder 363 is provided on the side of the branch pipe 364 away from the bottom plate 341, and the surface of the cylinder 363 is fixedly connected to the surfaces of several branch pipes 364. The side of the cylinder 363 away from the bottom plate 341 is fixedly connected to the second pump body 362, and the side of the second pump body 362 away from the cylinder 363 is fixedly connected to the injection molding tube 361. One end of the injection molding tube 361 away from the second pump body 362 extends to the outside of the shell 1, and the surface of the injection molding tube 361 is fixedly connected to the inner side surface of the shell 1. The injection molding tube 361 is connected to the raw material, and the second pump body 362 is started. The raw material passes through the injection molding tube 361, the second pump body 362, the cylinder 363, and the branch pipe 364 in sequence.

[0058] The surface of the branch pipe 364 located at the interval between the bottom plate 341 and the connecting plate 342 is bent inwardly, and a hollow tube 365 is arranged outside the bent position of the branch pipe 364. The two ends of the hollow tube 365 are respectively fixedly connected to the sides of the bottom plate 341 and the connecting plate 342 that are close to each other, and the internal vacuum setting of the hollow tube 365 and the inwardly bent surface can cool the pouring port into a slender column, so that it can be better separated from the uncooled raw material in the branch pipe 364 during demoulding, and the vacuum interior of the hollow tube 365 can insulate the bent position of the branch pipe 364, so that the bent position will not cool down quickly after the injection is stopped, and the injection molded part can be demoulded within the time difference between the injection molded part cooling down and the pouring port not cooling down, so as to avoid the formation of a larger pouring port and the waste of raw materials.

[0059] When in use, the upper mold 31 and the lower mold 33 are molded together, the injection tube 361 is connected to the raw material, and the second pump body 362 is started. The raw material passes through the injection tube 361, the second pump body 362, the cylinder 363, and the branch pipe 364 in sequence, and is injected into the gap between the upper mold 31 and the lower mold 33 through the branch pipe 364. The raw material enters the top of the triangular block 391, and its inclined top can converge the raw materials on each side to the center, ensuring that when the raw material is injected from the four corners, the center can be filled to avoid gaps or bubbles. The raw material rises evenly, thereby discharging the air from the exhaust pipe 32. When the raw material enters the exhaust pipe 32, it is closed. Close its valve. At this time, the raw material fills the gap between the upper mold 31 and the lower mold 33. When the valve of the exhaust pipe 32 is closed, the raw material continues to be filled in. The arc surface of the triangular block 391 slides on the surface of the connecting plate 342. The triangular block 391 enters the gap between the connecting plate 342 and the bottom plate 341. Then stop injecting the raw material, connect the water pipe through the water injection pipe 351, start the first pump body 352, and inject water into the lower mold 33. Finally, the cooling water is filled into the lower mold 33 and the tube body 310. After cooling, the cooling water is pumped out, the telescopic rod 2 is started, the upper mold 31 is demoulded, and the injection molded part is taken out to complete the injection molding.

[0060] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An injection molding mold for producing a motorcycle rear trunk, characterized in that: include: A housing (1), and a telescopic rod (2) arranged on the top of the housing (1); A molding mechanism (3), the molding mechanism (3) having a cooling structure for cooling during demoulding; The top of the shell (1) is fixedly connected to the bottom of the telescopic rod (2), the bottom of the shaping mechanism (3) is fixedly connected to the top of the shell (1), and one end of the telescopic rod (2) away from the shell (1) is fixedly connected to the surface of the shaping mechanism (3); Wherein, the forming mechanism (3) comprises: An upper mold (31), the inner side of the upper mold (31) being arranged in the shape of the outer side of a motorcycle rear trunk, and an exhaust pipe (32) arranged on the top of the upper mold (31), the exhaust pipe (32) being controlled by a valve; A lower mold (33), the outer side surface of the lower mold (33) being arranged in the shape of the inner side surface of a motorcycle rear trunk, and a base (34) arranged at the bottom of the lower mold (33); A cooling component (35), the cooling component (35) having a pipeline structure, and used for cooling the formed rear trunk; An injection molding component (36), the injection molding component (36) having four injection molding ports for injecting raw materials; The outer side surface of the upper mold (31) is fixedly connected to a side of the telescopic rod (2) away from the outer shell (1); the exhaust pipe (32) is arranged at the top center of the upper mold (31), and the surface of the exhaust pipe (32) is fixedly connected to the inner side surface of the upper mold (31); the bottom of the lower mold (33) is fixedly connected to the top of the base (34); the outer side surface of the base (34) is fixedly connected to the inner wall of the outer shell (1); the cooling component (35) is arranged inside the outer shell (1), and the cooling component (35) is fixedly connected to the bottom of the base (34); the injection molding component (36) is arranged at the interval between the outer shell (1) and the cooling component (35), and the injection molding component (36) is fixedly connected to the bottom of the base (34); The base (34) comprises a bottom plate (341), the outer side surface of the bottom plate (341) is fixedly connected to the inner wall of the outer shell (1), the tube body (310) located inside the upper mold (31) is fixedly connected to a side of the bottom plate (341) away from the outer shell (1), the inner side surface of the bottom plate (341) is fixedly connected to a connecting plate (342), the connecting plate (342) is arranged at four corners of the bottom plate (341), and one side of the four connecting plates (342) close to the center of the bottom plate (341) is fixedly connected to the outer side surface of the lower mold (33), and there is a gap between the lower mold (33) and the bottom plate (341); A circular groove (343) is provided on a side of the bottom plate (341) away from the housing (1), the circular groove (343) is provided just below the tube body (310) located inside the upper mold (31), and the circular groove (343) is communicated with a gap between the bottom plate (341) and the connecting plate (342); The filling assembly (39) comprises triangular blocks (391), wherein the triangular blocks (391) are provided in four groups, wherein each group of triangular blocks (391) is symmetrically arranged at the interval between two adjacent connecting plates (342), wherein the sides of the two triangular blocks (391) close to each other are rotationally connected, and the sides of the two triangular blocks (391) away from each other are arranged in an arc shape and are slidably connected to the surface of the connecting plate (342); A groove body (392) is provided on a side of the triangular block (391) close to the bottom plate (341), and the groove body (392) is provided on a side of two adjacent triangular blocks (391) that are away from each other. A spring (393) is fixedly connected to the top of the inner wall of the groove body (392), and one end of the spring (393) away from the triangular block (391) is fixedly connected to a side of the bottom plate (341) away from the housing (1).

2. The injection molding die for producing a motorcycle rear trunk according to claim 1, characterized in that: A first hexagonal hole (37) is provided on a side of the upper mold (31) close to the outer shell (1), and a plurality of the first hexagonal holes (37) are arranged along the circumference of the upper mold (31). A second hexagonal hole (38) is provided on a side of the lower mold (33) close to the outer shell (1), and a plurality of the second hexagonal holes (38) are arranged along the circumference of the lower mold (33). Tubes (310) are provided inside the plurality of the first hexagonal holes (37) and the second hexagonal holes (38), and are located on the upper mold (31). The surface of the tube body (310) inside the mold (31) is slidably connected to the inner wall of the first hexagonal hole (37), the surface of the tube body (310) inside the lower mold (33) is fixedly connected to the inner wall of the second hexagonal hole (38), and the tube body (310) is arranged in a hexagonal shape. The side of the tube body (310) inside the upper mold (31) close to the outer shell (1) is fixedly connected to the top of the base (34), and a filling component (39) is arranged inside the base (34).

3. The injection molding mold for producing a motorcycle rear trunk according to claim 2, characterized in that: The cooling component (35) comprises a water inlet pipe (353), the surface of the water inlet pipe (353) being fixedly connected to the center of the bottom plate (341), the side of the water inlet pipe (353) away from the bottom plate (341) being fixedly connected to a first pump body (352), the side of the first pump body (352) away from the water inlet pipe (353) being fixedly connected to a water injection pipe (351), one end of the water injection pipe (351) away from the first pump body (352) being bent and extending to the outside of the outer shell (1), and the surface of the water injection pipe (351) being fixedly connected to the inner side surface of the outer shell (1).

4. The injection molding die for producing a motorcycle rear trunk according to claim 3, characterized in that: The injection molding assembly (36) comprises a branch pipe (364), the branch pipe (364) being symmetrically arranged at the four corners of the bottom plate (341), and the branch pipe (364) penetrating the bottom of the bottom plate (341) and the connecting plate (342), and extending to the gap between the upper mold (31) and the lower mold (33).

5. The injection molding die for producing a motorcycle rear trunk according to claim 4, characterized in that: A cylinder (363) is provided on the side of the branch pipe (364) away from the bottom plate (341); the surface of the cylinder (363) is fixedly connected to the surfaces of a plurality of branch pipes (364); the side of the cylinder (363) away from the bottom plate (341) is fixedly connected to a second pump body (362); the side of the second pump body (362) away from the cylinder (363) is fixedly connected to an injection molding tube (361); one end of the injection molding tube (361) away from the second pump body (362) extends to the outside of the outer shell (1), and the surface of the injection molding tube (361) is fixedly connected to the inner side surface of the outer shell (1).

6. The injection molding die for producing a motorcycle rear trunk according to claim 5, characterized in that: The surface of the branch pipe (364) located at the interval between the bottom plate (341) and the connecting plate (342) is bent inwardly, and a hollow pipe (365) is arranged outside the bent position of the branch pipe (364), and two ends of the hollow pipe (365) are respectively fixedly connected to the bottom plate (341) and the side of the connecting plate (342) close to each other, and the interior of the hollow pipe (365) is set to be vacuum.

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