Injection mold for multi-mold deep-cavity product

Abstract

The utility model relates to the technical field of injection molding, in particular to an injection mold for a multi-mold deep-cavity product, which comprises an upper mold and a lower mold, the middle parts of the upper mold and the lower mold are respectively provided with an upper mold core and a lower mold core which are correspondingly arranged, the upper surface of the lower mold core is provided with N lower cavities, the upper mold core is provided with N through upper cavities, the upper mold cavity and the corresponding lower mold cavity are oppositely arranged, the upper mold cavity is provided with an upper mold core, the upper mold core comprises a fixing part located outside the upper mold cavity, a transition part matched with the upper mold cavity and a forming part stretching into the lower mold cavity, and a forming space is formed between the forming part and the side wall of the lower mold cavity; a vertical runner is arranged in the middle of the upper mold core and communicated with the forming space, the lower mold core is connected with a lower cooling device, the upper mold core is connected with an upper cooling device, and due to the fact that the upper cooling device and the lower cooling device are arranged on the upper mold core and the lower mold core respectively, formed finished products can be rapidly cooled after injection molding.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection mold for multi-mode deep cavity products. Background Art

[0002] Most plastic products used in daily life are produced through injection molds. In order to improve product production efficiency, many injection molds currently adopt a multi-mold structure to inject multiple products at a time. Currently, multi-molds generally produce products with relatively simple structures. When faced with deep-cavity products, deep-cavity products have higher requirements for heat dissipation. Therefore, most of them generally use a single mold, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of the utility model is to provide an injection mold for multi-mode deep cavity products to address the deficiencies of the existing technology, and the injection mold can effectively increase production efficiency.

[0004] The technical solution adopted by this utility model is:

[0005] An injection mold for multi-mode deep-cavity products, comprising: an upper mold and a lower mold, wherein the middle portions of the upper mold and the lower mold are respectively provided with corresponding upper mold cores and lower mold cores, the upper surface of the lower mold core is provided with N lower cavities, and the upper mold core is provided with N penetrating upper cavities, the upper cavities are arranged opposite to the corresponding lower cavities, the upper cavity is provided with an upper mold core, the upper mold core comprises a fixing portion located outside the upper cavity, a transition portion cooperating with the upper cavity, and a molding portion extending into the lower cavity, a molding space is formed between the molding portion and the side wall of the lower cavity; a vertical flow channel is provided in the middle portion of the upper mold core, the vertical flow channel is connected to the molding space, the lower mold core is connected to a lower cooling device, and the upper mold core is connected to an upper cooling device, and N is 2, 3 or 4.

[0006] Furthermore, the upper cooling device includes two vertical cooling pipes arranged vertically, the upper ends of the vertical cooling pipes are bent to form transverse cooling pipes, the ends of the transverse cooling pipes are connected with interfaces, and the lower ends of the vertical cooling pipes are connected with longitudinal cooling pipes.

[0007] Preferably, one end of the longitudinal cooling tube extends outward to form an extension tube.

[0008] Furthermore, the lower cooling device includes lower cooling pipes arranged on both sides of the lower mold core, and the lower cooling pipes include a lower open rectangular cooling pipe and an upper open rectangular cooling pipe. The left end of the lower open rectangular cooling pipe extends downward with a main lower vertical cooling pipe, and the left end of the upper open rectangular cooling pipe extends downward with a secondary lower vertical cooling pipe. The lower ends of the main lower vertical cooling pipe and the secondary lower vertical cooling pipe both extend out of the lower mold core and are sleeved with sealing rings. The right end of the lower open rectangular cooling pipe is connected to the right end of the upper open rectangular cooling pipe through an intermediate vertical pipe. The lower end of the main lower vertical cooling pipe is connected to the main horizontal cooling pipe, and the lower end of the secondary lower vertical cooling pipe is connected to the secondary horizontal cooling pipe; the ends of the main horizontal cooling pipe and the secondary horizontal cooling pipe are both connected with interfaces.

[0009] Furthermore, the fixing portion of the upper mold core protrudes from the upper mold plate, a nozzle plate is provided above the upper mold plate, an inner concave hole matching the fixing portion of the upper mold core is provided below the nozzle plate, and the nozzle plate is provided with a connecting hole and fixedly connected to the upper mold core by bolts.

[0010] Furthermore, the nozzle plate is provided with a horizontal transverse main channel, both ends of the horizontal transverse main channel are provided with horizontal longitudinal branch channels, and both ends of the horizontal longitudinal branch channels are respectively connected to the vertical channel.

[0011] Furthermore, an intermediate plate and an upper fixed plate are provided above the nozzle plate, the upper fixed plate is connected to a sprue sleeve and a fixing ring, the upper fixed plate is provided with 4 mounting holes and respectively connected to nozzle hooks, and the lower end of the nozzle hook is connected to the end of the horizontal longitudinal branch channel.

[0012] The beneficial effects of the utility model are as follows: the utility model can quickly cool the molded finished product after injection molding by respectively arranging an upper cooling device and a lower cooling device on the upper mold core and the lower mold core. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of this embodiment.

[0014] Figure 2 for Figure 1 Schematic diagram of a structure in which the upper fixing plate is removed.

[0015] Figure 3 for Figure 2 Schematic diagram of a structure without the middle plate.

[0016] Figure 4 for Figure 3 A structural diagram without the nozzle plate.

[0017] Figure 5 for Figure 4 A structural diagram with the upper template removed.

[0018] Figure 6 for Figure 5 A structural diagram with the lower template removed.

[0019] Figure 7 for Figure 6 Schematic diagram of the structure without the upper mold core, lower mold core and one mold core.

[0020] Figure 8 This is a structural diagram of the cooperation between the upper cooling device and the upper mold core.

[0021] Figure 9 This is a structural diagram of the upper cooling device.

[0022] Figure 10 This is a structural diagram of the lower cooling device.

[0023] Reference numerals:

[0024] 1 - Retaining ring; 2 - Upper retaining plate; 3 - Middle plate; 4 - Gate plate; 5 - Upper mold; 6 - Lower mold; 7 - Upper cooling device; 8 - Lower cooling device; 9 - Sprue bushing; 10 - Gate hook; 11 - Upper mold core; 12 - Vertical runner; 13 - Horizontal longitudinal branch runner; 14 - Horizontal transverse main runner; 15 - Upper mold core; 19 - Lower mold core.

[0025] 111 - fixing portion; 112 - transition portion; 113 - forming portion;

[0026] 71 - horizontal cooling pipe; 72 - vertical cooling pipe; 73 - extension pipe; 74 - longitudinal cooling pipe;

[0027] 81 - upper open rectangular cooling pipe; 82 - lower open rectangular cooling pipe; 83 - middle vertical pipe; 84 - auxiliary lower vertical cooling pipe; 85 - main lower vertical cooling pipe; 86 - main horizontal cooling pipe; 87 - auxiliary horizontal cooling pipe. DETAILED DESCRIPTION

[0028] The following is a detailed description of the present invention with reference to the accompanying drawings. Figures 1 to 10 shown.

[0029] Example: See Figure 4 、 Figure 5 as well as Figure 6 An injection mold for multi-mold deep cavity products, comprising: an upper mold 5 and a lower mold 6, wherein the middle portions of the upper mold 5 and the lower mold 6 are provided with corresponding upper mold cores 15 and lower mold cores 19, respectively. The upper surface of the lower mold core 19 is provided with N lower cavities, and the upper mold core 15 is provided with N through-going upper cavities, wherein the upper cavities are arranged opposite to the corresponding lower cavities, and the upper cavities are provided with upper mold cores 11, see Figure 8The upper mold core 11 includes a fixing portion 111 located outside the upper mold cavity, a transition portion 112 cooperating with the upper mold cavity, and a molding portion 113 extending into the lower mold cavity, and a molding space is formed between the molding portion 113 and the side wall of the lower mold cavity; a vertical flow channel 12 is provided in the middle of the upper mold core 11, and the vertical flow channel 12 is connected to the molding space, the lower mold core 19 is connected to the lower cooling device 8, and the upper mold core 11 is connected to the upper cooling device 7, and N is 2, 3 or 4.

[0030] In the prior art, when designing multiple cavities, the inlet gate of the molding space within the cavity is generally set above or on the side of the cavity. The technical solution of the present application sets the inlet gate below the molding space; by setting a vertical flow channel 12, liquid plastic is introduced from the lower middle part of the molding space, and the opening of the product is upward. By connecting the lower cooling device 8 to the lower mold core 19, and the upper mold core 15 is connected to the upper cooling device 7, after molding, the temperature of the lower mold core 19 is reduced under the cooling of the lower cooling device 8, and the upper mold core 11 is cooled by the cooling of the upper cooling device 7. The inner side of the molded product is assisted by the molding part 113 of the upper mold core 11, and the outer side of the molded finished product is cooled by the lower mold core 19. The cooling speed is accelerated by the internal and external cooling method. Secondly, in this embodiment, N=4.

[0031] See also Figure 9 The upper cooling device 7 includes two vertical cooling pipes 72 arranged vertically. The upper ends of the vertical cooling pipes 72 are bent to form a transverse cooling pipe 71. The ends of the transverse cooling pipes 71 are connected with interfaces. The lower ends of the vertical cooling pipes 72 are connected with longitudinal cooling pipes 74.

[0032] In order to cool the upper mold core 11, this technical solution sets up two vertical cooling pipes 72. The two vertical cooling pipes 72 penetrate deep into the upper mold core 11, pass through the fixed part 111, the transition part 112 and penetrate into the forming part 113. Finally, a longitudinal cooling pipe 74 is set in the forming part 113, and the longitudinal cooling pipe 74 is connected to the vertical cooling pipe 72. Secondly, to facilitate the introduction of cold water, a transverse cooling pipe 71 is set at the upper end of the vertical cooling pipe 72. When the transverse cooling pipe 71 is specifically set up, it extends out of the upper mold core 15 fixed plate where the upper mold core 15 is located and is connected to an interface, one of which is a water inlet interface and the other is a water outlet interface. When in use, the water inlet interface is connected to the water inlet pipe of the coolant, and the water outlet interface is connected to the water outlet pipe of the coolant. The coolant enters from one of the horizontal cooling tubes 71 and enters the interior of the upper mold core 11 along the corresponding vertical cooling tube 72, and refluxes under the guidance of the longitudinal cooling tube 74, another vertical tube and the horizontal cooling tube 71; the upper mold core 11 is cooled by the two vertical cooling tubes 72.

[0033] Preferably, one end of the longitudinal cooling pipe 74 extends outward to form an extension pipe 73 .

[0034] The extension tube 73 is close to the molding space. After molding, the extension tube 73 is close to the inner wall of the product, which can quickly assist in cooling the product.

[0035] Furthermore, the lower cooling device 8 includes lower cooling pipes arranged on both sides of the lower mold core 19, and the lower cooling pipes include a lower open rectangular cooling pipe 82 and an upper open rectangular cooling pipe 81. The left end of the lower open rectangular cooling pipe 82 extends downward with a main lower vertical cooling pipe 85, and the left end of the upper open rectangular cooling pipe 81 extends downward with a secondary lower vertical cooling pipe 84. The lower ends of the main lower vertical cooling pipe 85 and the secondary lower vertical cooling pipe 84 both extend out of the lower mold core 19 and are sleeved with sealing rings. The right end of the lower open rectangular cooling pipe 82 is connected to the right end of the upper open rectangular cooling pipe 81 through an intermediate vertical pipe 83. The lower end of the main lower vertical cooling pipe 85 is connected to the main horizontal cooling pipe 86, and the lower end of the secondary lower vertical cooling pipe 84 is connected to the secondary horizontal cooling pipe 87; the ends of the main horizontal cooling pipe 86 and the secondary horizontal cooling pipe 87 are both connected with interfaces.

[0036] The lower cooling device 8 forms two open cooling pipes arranged in parallel up and down by setting a lower open rectangular cooling pipe 82 and an upper open rectangular cooling pipe 81. The right end of the lower open rectangular cooling pipe 82 is connected to the right end of the upper open rectangular cooling pipe 81 through an intermediate vertical pipe 83, so that the lower open rectangular cooling pipe 82 and the upper open rectangular cooling pipe 81 make rational use of space; in the specific setting, the main lower vertical cooling pipe 85 and the auxiliary lower vertical cooling pipe 84 are arranged at intervals and are sealed with the lower mold core 19 through a sealing ring; the lower ends of the main lower vertical cooling pipe 85 and the auxiliary lower vertical cooling pipe 84 are respectively connected to the main horizontal cooling pipe 86 and the auxiliary horizontal cooling pipe 87 arranged at intervals, and the ends of the main horizontal cooling pipe 86 and the auxiliary horizontal cooling pipe 87 are both connected with interfaces. When in use, one of the interfaces is connected to the liquid inlet pipe of the cooling system, and the other interface is connected to the liquid outlet pipe of the cooling system. The low-temperature coolant enters from one of the interfaces, flows through the lower cooling device 8 and flows out from the other interface. Since the lower cooling device 8 is arranged inside the lower mold core 19, the lower mold core 19 is cooled.

[0037] Furthermore, the fixing portion 111 of the upper mold core 11 protrudes from the upper mold plate, a sprue plate 4 is provided above the upper mold plate, an inner concave hole matching the fixing portion 111 of the upper mold core 11 is provided below the sprue plate 4, and the sprue plate 4 is provided with a connecting hole and fixedly connected to the upper mold core 11 by bolts.

[0038] In order to facilitate the fixation of the upper mold core 11, since the fixing part 111 of the upper mold core 11 protrudes from the upper mold core 15, it can only be fixed to the sprue plate 4. An inner concave hole is provided on the lower end surface of the sprue plate 4 to accommodate the fixing part 111, and the upper mold core 11 is fixedly connected by bolts. When the mold is opened, the sprue plate 4 moves together with the upper mold core 15, thereby avoiding relative movement between the upper mold core 11 and the upper mold core 15.

[0039] Furthermore, the nozzle plate 4 is provided with a horizontal transverse main channel 14 , and horizontal longitudinal branch channels 13 are respectively provided at both ends of the horizontal transverse main channel 14 , and both ends of the horizontal longitudinal branch channel 13 are respectively connected to the vertical channel 12 .

[0040] In the specific setting, the horizontal transverse main channel 14 is opposite to the gate of the gate sleeve 9. In this embodiment, the upper mold core 15 is provided with 4 upper cavities. When designing the flow channel, it is necessary to correspond to the 4 cavities; therefore, this application adopts a simple 2*2 method, through the cooperation of the horizontal transverse main channel 14 and the horizontal longitudinal branch channel 13, the plastic liquid is injected into the 4 vertical flow channels 12 and enters the 4 cavities.

[0041] Furthermore, an intermediate plate 3 and an upper fixed plate 2 are provided above the sprue plate 4. The upper fixed plate 2 is connected to a sprue sleeve 9 and a fixing ring 1. The upper fixed plate 2 is provided with 4 mounting holes and is respectively connected to a sprue hook 10. The lower end of the sprue hook 10 is connected to the end of the horizontal longitudinal branch channel 13.

[0042] Four mounting holes and a nozzle hook needle 10 are provided so that when the nozzle plate 4 is separated, the nozzle material can be separated from the nozzle plate 4 by the nozzle hook needle 10 without affecting the next injection molding.

[0043] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. An injection mold for a multi-mode deep cavity product, comprising: The upper mold and the lower mold, the middle parts of the upper mold and the lower mold are respectively provided with corresponding upper mold cores and lower mold cores, the upper surface of the lower mold core is provided with N lower cavities, and the upper mold core is provided with N penetrating upper cavities, the upper cavities and the corresponding lower cavities are arranged opposite to each other, and are characterized in that: the upper mold cavity is provided with an upper mold core, the upper mold core includes a fixed part located outside the upper mold cavity, a transition part matching the upper mold cavity and a molding part extending into the lower mold cavity, and a molding space is formed between the molding part and the side wall of the lower mold cavity; a vertical flow channel is provided in the middle part of the upper mold core, the vertical flow channel is connected to the molding space, the lower mold core is connected to a lower cooling device, and the upper mold core is connected to an upper cooling device, and N is 2, 3 or 4.

2. The injection mold for multi-mode deep cavity products according to claim 1, characterized in that: The upper cooling device includes two vertical cooling pipes arranged vertically, the upper ends of the vertical cooling pipes are bent to form transverse cooling pipes, the ends of the transverse cooling pipes are connected with interfaces, and the lower ends of the vertical cooling pipes are connected with longitudinal cooling pipes.

3. The injection mold for multi-mode deep cavity products according to claim 2, characterized in that: One end of the longitudinal cooling pipe extends outward to form an extension pipe.

4. The injection mold for a multi-mode deep cavity product according to claim 1, characterized in that: The lower cooling device includes lower cooling pipes arranged on both sides of the lower mold core, and the lower cooling pipes include a lower open rectangular cooling pipe and an upper open rectangular cooling pipe. The left end of the lower open rectangular cooling pipe is downwardly extended with a main lower vertical cooling pipe, and the left end of the upper open rectangular cooling pipe is downwardly extended with a secondary lower vertical cooling pipe. The lower ends of the main lower vertical cooling pipe and the secondary lower vertical cooling pipe both extend out of the lower mold core and are sleeved with sealing rings. The right end of the lower open rectangular cooling pipe is connected to the right end of the upper open rectangular cooling pipe through an intermediate vertical pipe. The lower end of the main lower vertical cooling pipe is connected to the main horizontal cooling pipe, and the lower end of the secondary lower vertical cooling pipe is connected to the secondary horizontal cooling pipe; the ends of the main horizontal cooling pipe and the secondary horizontal cooling pipe are both connected with interfaces.

5. The injection mold for multi-mode deep cavity products according to claim 1, characterized in that: The fixing portion of the upper mold core protrudes from the upper mold plate, a nozzle plate is provided above the upper mold plate, an inner concave hole matching the fixing portion of the upper mold core is provided below the nozzle plate, and the nozzle plate is provided with a connecting hole and fixedly connected to the upper mold core by bolts.

6. The injection mold for multi-mode deep cavity products according to claim 5, characterized in that: The nozzle plate is provided with a horizontal transverse main channel, and both ends of the horizontal transverse main channel are respectively provided with horizontal longitudinal branch channels, and both ends of the horizontal longitudinal branch channels are respectively connected to the vertical channel.

7. The injection mold for multi-mode deep cavity products according to claim 6, characterized in that: An intermediate plate and an upper fixed plate are provided above the nozzle plate. The upper fixed plate is connected to a sprue sleeve and a fixing ring. The upper fixed plate is provided with four mounting holes and is respectively connected to nozzle hooks. The lower end of the nozzle hook is connected to the end of the horizontal longitudinal branch channel.

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