Rapid forming injection molding mold for shoes

Abstract

The utility model relates to a quick-forming injection molding mold for shoes, which belongs to the technical field of injection molding molds for shoes and comprises a bottom plate, a lower mold fixed on the bottom plate, an upper mold embedded at the top of the lower mold mounted on the bottom plate through a rotary support, a lower forming groove arranged on the lower mold, and a middle filling block arranged in the forming groove. One side of the middle filling block is rotationally connected with the bottom plate through a supporting part, an upper forming groove is formed in the bottom of the upper mold, an injection molding pipe is arranged on the side wall of the lower mold and communicates with a lower forming groove in the lower mold, an auxiliary injection opening is formed in the side wall of the middle filling block, and a tail pipe communicating with external injection molding equipment is fixed to the supporting part. According to the utility model, the auxiliary injection port is arranged on the side wall of the middle filling block, and the middle filling block is connected with external injection molding equipment through the injection molding channel, so that multi-point injection molding filling can be carried out during injection molding, and the molding speed is effectively increased.

Description

Technical Field

[0001] This utility model relates to the field of shoe injection molding mold technology, and in particular to a rapid prototyping shoe injection molding mold. Background Technology

[0002] Using injection molding molds to produce injection molded shoes allows for one-time molding, which is very fast. In this process, plastic material is injected into the mold through an injection molding machine, and then the shoe product is formed after being pressurized and heated for a period of time. Because injection molded products are molded in one piece, they are often used for slippers and some shoes whose outer materials are not completely covered with plastic.

[0003] For example, Chinese utility model patent document, announcement number CN211807546U, discloses an injection mold for integral molding of camouflage boots and shoe uppers. By setting an installation plate, a pull rod and a second spring, the lower mold can be installed, which facilitates disassembly and makes it more convenient to use. By setting a fixed seat, the cylinder and the upper mold can be connected, thus achieving the purpose of detachable installation. By setting a first spring, when the mold is lifted, the first spring resets and drives the ejector rod to perform the product ejection work.

[0004] In the process of manufacturing injection molded shoes, plastic material needs to be injected through the injection port. However, the injection port of traditional molding molds is located in a single position. It is necessary to wait for the material to completely fill the mold cavity before the next process can be carried out. If there is an empty cavity, a defective product will be produced. The waiting time in the injection process is long, which is a waste of production time. On the other hand, opening multiple injection holes in the mold is costly, so it is often difficult to shorten the molding time. Utility Model Content

[0005] To overcome the technical defects of the existing technology, this utility model provides a rapid prototyping injection molding mold for shoes. By setting an auxiliary injection port on the side wall of the intermediate filler block and connecting it to an external injection molding equipment through an injection channel, multi-point injection filling can be performed during injection molding, effectively increasing the molding speed.

[0006] The technical solution adopted by this utility model is as follows: It includes a base plate, on which a lower mold is fixed. An upper mold, embedded in the top of the lower mold, is mounted on the base plate via a rotating bracket. The lower mold has a lower forming groove, and an intermediate filling block is provided within the forming groove. One side of the intermediate filling block is rotatably connected to the base plate via a support. The bottom of the upper mold has an upper forming groove. A cavity layer is left between the intermediate filling block, the upper mold, and the lower mold. After plastic material is injected, it can fill and form the shape of a footwear product. The upper mold requires... The lower mold has a reserved vent hole. An injection tube is provided on the side wall of the lower mold, and the injection tube is connected to the lower forming groove on the lower mold. An auxiliary injection port is provided on the side wall of the intermediate filler block. A tail pipe connected to an external injection molding device is fixed on the support. An injection channel connected to the tail pipe is provided in the intermediate filler block. One end of the injection channel extends to the side wall of the auxiliary injection port. A sealing device is provided in the intermediate filler block. The sealing device is used to seal the auxiliary injection port after injection to ensure the appearance quality of the injection molded product.

[0007] Preferably, in order to facilitate external operation to open the upper mold and the intermediate filling block, the support is provided with a rear operating rod, and the side wall of the upper mold is fixed with a front operating plate through a connecting plate.

[0008] Preferably, in order to facilitate the sealing of the injection channel, the inner wall of the auxiliary injection port is provided with a flat portion, through which the injection channel extends. The sealing device includes a telescopic component, and a sealing block is provided on one side of the telescopic component. The sealing block is slidably engaged in the auxiliary injection port.

[0009] Preferably, in order to facilitate the movement of the telescopic rod by using gas, the telescopic component includes a cylinder, one end of which is slidably engaged with the telescopic rod, the sealing block is fixed to one end of the telescopic rod, the other end of the telescopic rod extends into the cylinder and is fixed with a sealing disc, a contraction spring is fixed to one side of the sealing disc, and a pneumatic tube is provided on the outer wall of the cylinder.

[0010] Preferably, in order to facilitate the rapid and uniform injection of plastic material into the mold, the auxiliary injection ports located on both sides of the intermediate filler block are symmetrically arranged, the telescopic rods are provided at both ends of the cylinder, a partition plate is fixed in the middle of the cylinder, the two sides of the partition plate are respectively connected to one end of the corresponding contraction spring, the pneumatic tube is located on one side of the partition plate, and the partition plate has a notch corresponding to the pneumatic tube.

[0011] Preferably, in order to facilitate control over whether to block auxiliary injection ports at different locations, the pneumatic tube extends to the support through a gas pipeline and is connected to an external high-pressure gas source, and the contraction strength of the contraction springs on both sides of the partition plate is different.

[0012] Preferably, in order to quickly inject plastic by adding auxiliary injection ports, the intermediate filler block is provided with a pair of auxiliary injection ports on one side wall, the pneumatic tube extends to the support part through a gas pipeline and is connected to an external high-pressure gas source, and the cylinder on the side of the paired auxiliary injection ports is connected to the same gas pipeline.

[0013] Preferably, in order to facilitate control over whether to block auxiliary injection ports at different locations, the contraction strengths of the contraction springs in the paired cylinders are different.

[0014] The beneficial effects of this utility model are: by setting auxiliary injection ports on the side wall of the intermediate filler block and connecting them to external injection molding equipment through injection channels, the auxiliary injection ports are opened on the side wall of the intermediate filler block, and injection channels are set on the inner wall after auxiliary injection. During injection molding, multi-point injection filling can be performed, effectively increasing the molding speed. In order to prevent gas accumulation, a sealing device can be used to control whether each injection channel on the intermediate filler block is closed. At the same time, after injection molding is completed, the sealing device can fill the auxiliary injection ports to prevent defects in the appearance of the injection-molded footwear products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation structure of the sealing device in Embodiment 1 of this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the cylinder in Embodiment 1 of this utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0020] Figure 6 This is a schematic diagram of the sealing device structure of Embodiment 2 of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Lower mold; 3. Rotating support; 4. Upper mold; 401. Front operating plate; 5. Intermediate filler block; 6. Support part; 601. Tail pipe; 602. Rear operating rod; 7. Injection tube; 8. Auxiliary injection port; 9. Sealing device; 91. Telescopic component; 911. Cylinder; 912. Telescopic rod; 913. Sealing disc; 914. Contraction spring; 915. Pneumatic pipe; 92. Sealing block; 10. Divider disc. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings: Example

[0023] like Figures 1-4 As shown, this embodiment provides a rapid prototyping injection molding mold for shoes. A base plate 1 has a lower mold 2 fixed on it. An upper mold 4, embedded in the top of the lower mold 2, is mounted on the base plate 1 via a rotating bracket 3. The lower mold 2 has a lower forming groove, and an intermediate filling block 5 is provided within the forming groove. One side of the intermediate filling block 5 is rotatably connected to the base plate 1 via a support 6. The bottom of the upper mold 4 has an upper forming groove. A cavity layer is left between the intermediate filling block 5, the upper mold 4, and the lower mold 2, which can fill and form the shape of the shoe product after plastic material is injected. The upper mold 4 needs to have vent holes. An injection tube 7 is provided on the side wall of the lower mold 2. The injection tube 7 and... The lower forming groove on the lower mold 2 is connected. An auxiliary injection port 8 is provided on the side wall of the intermediate filler block 5. A tail pipe 601 connected to an external injection molding equipment is fixed on the support part 6. An injection channel connected to the tail pipe 601 is provided in the intermediate filler block 5. One end of the injection channel extends to the side wall of the auxiliary injection port 8. A sealing device 9 is provided in the intermediate filler block 5. The sealing device 9 is used to seal the auxiliary injection port 8 after injection to ensure the appearance quality of the injection molded product. A rear operating rod 602 is provided on the support part 6. A front operating plate 401 is fixed on the side wall of the upper mold 4 through a connecting plate. This makes it easy to open the upper mold 4 and the intermediate filler block 5 from the outside.

[0024] The inner wall of the auxiliary injection port 8 is provided with a flat part, through which the injection channel passes. The sealing device 9 includes a telescopic component 91, and a sealing block 92 is provided on one side of the telescopic component 91. The sealing block 92 is slidably engaged in the auxiliary injection port 8, which facilitates the sealing of the injection channel.

[0025] The telescopic component 91 includes a cylinder 911, one end of which is slidably engaged with a telescopic rod 912. A sealing block 92 is fixed to one end of the telescopic rod 912. The other end of the telescopic rod 912 extends into the cylinder 911 and is fixed with a sealing disc 913. A contraction spring 914 is fixed to one side of the sealing disc 913. A pneumatic tube 915 is provided on the outer wall of the cylinder 911, which facilitates the movement of the telescopic rod 912 by using gas.

[0026] The auxiliary injection ports 8 located on both sides of the middle filling block 5 are symmetrically arranged. Both ends of the cylinder 911 are provided with telescopic rods 912. A partition plate 10 is fixed in the middle of the cylinder 911. The two sides of the partition plate 10 are respectively connected to one end of the corresponding contraction spring 914. The pneumatic pipe 915 is located on one side of the partition plate 10. The partition plate 10 is provided with a notch corresponding to the pneumatic pipe 915, which facilitates the rapid and uniform injection of plastic material into the mold.

[0027] The pneumatic tube 915 extends to the support part 6 through the gas pipeline and is connected to the external high-pressure air source. The contraction strength of the contraction springs 914 on both sides of the partition plate 10 is different, which makes it easy to control whether to block the auxiliary injection ports 8 at different positions.

[0028] In use, this mold features auxiliary injection ports 8 on the sidewalls of the intermediate filler block 5, connected to external injection molding equipment via injection channels. The auxiliary injection ports 8 are located on the sidewalls of the intermediate filler block 5, and injection channels are provided on the inner wall after the auxiliary injection. This allows for multi-point injection filling during molding, effectively increasing molding speed. To prevent gas accumulation, a sealing device 9 controls the closure of each injection channel on the intermediate filler block 5. After injection molding, the sealing device 9 fills the auxiliary injection ports 8, preventing defects in the appearance of the molded footwear products. Specifically, high-pressure air is supplied by a pneumatic tube 915. The pressure allows the sealing disc 913 to move, which in turn allows the telescopic rod 912 to push the sealing block 92. The contraction springs 914 on both sides of the separator disc 10 have different strengths. The contraction spring 914 with lower strength is stretched first and blocks the corresponding auxiliary injection port 8. In this way, the telescopic rod 912 at different positions can be moved by a single pneumatic tube 915. It should be noted that the sealing disc 913 inside the cylinder 911 will compress the space on the other side when it moves. In order to ensure the normal movement of the telescopic rod 912, an additional pipe connecting the side wall of the cylinder 911 to the outside is required to balance the gas. Example

[0029] like Figure 5 and Figure 6 As shown, this embodiment provides another implementation of the telescopic component 91. Auxiliary injection ports 8 are provided in pairs on one side wall of the intermediate filler block. The pneumatic pipe 915 extends to the support part 6 through the gas pipeline and is connected to the external high-pressure gas source. The cylinder 911 on one side of the paired auxiliary injection ports 8 is connected to the same gas pipeline. In this way, plastic injection can be performed quickly by increasing the number of auxiliary injection ports 8. The contraction strength of the contraction springs 914 in the paired cylinders 911 is different, which makes it easy to control whether to block the auxiliary injection ports 8 at different positions.

[0030] In this embodiment, external gas is still needed to drive the telescopic rods 912 on different cylinders 911 to move. In use, gas with different pressures is provided to the inside of the cylinder 911 to make the corresponding auxiliary injection port 8. In actual application, the height of the auxiliary injection port 8 can be set according to the requirements, thereby realizing the sequential closing of the injection channels at different positions.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A rapid prototyping injection molding mold for shoes, comprising a base plate (1) on which a lower mold (2) is fixed, characterized in that: The bottom plate (1) is provided with an upper mold (4) embedded in the top of the lower mold (2) through a rotating support (3), the lower mold (2) is provided with a lower forming groove, the intermediate filler block (5) is arranged in the forming groove, one side of the intermediate filler block (5) is rotatably connected with the bottom plate (1) through a support part (6), the bottom of the upper mold (4) is provided with an upper forming groove, the sidewall of the lower mold (2) is provided with an injection pipe (7), the injection pipe (7) is communicated with the lower forming groove on the lower mold (2), the sidewall of the intermediate filler block (5) is provided with an auxiliary injection port (8), the support part (6) is fixedly provided with a tail pipe (601) communicated with an external injection equipment, the intermediate filler block (5) is provided with an injection channel communicated with the tail pipe (601), one end of the injection channel extends to the sidewall of the auxiliary injection port (8), and the intermediate filler block (5) is provided with a plugging device (9).

2. The rapid prototyping, injection molding mold for footwear according to claim 1, characterized in that: The support part (6) is provided with a rear operating rod (602), and the sidewall of the upper mold (4) is fixedly provided with a front operating plate (401) through a connecting plate.

3. The rapid prototyping, injection molding shoe mold of claim 1, wherein: The inner wall of the auxiliary injection port (8) is provided with a flat part, the injection channel is arranged to pass through the flat part, and the plugging device (9) comprises a telescopic part (91), one side of the telescopic part (91) is provided with a plugging block (92), and the plugging block (92) is slidably connected in the auxiliary injection port (8).

4. The rapid prototyping, injection molding mold for footwear of claim 3, wherein: The telescopic part (91) comprises a cylinder (911), one end of the cylinder (911) is slidably connected with a telescopic rod (912), the plugging block (92) is fixed at one end of the telescopic rod (912), the other end of the telescopic rod (912) extends into the cylinder (911) and is fixedly provided with a sealing disc (913), one side of the sealing disc (913) is fixedly provided with a contraction spring (914), and the outer wall of the cylinder (911) is provided with a pneumatic pipe (915).

5. The rapid prototyping, injection molding shoe mold of claim 4, wherein: The auxiliary injection ports (8) located on both sides of the intermediate filler block (5) are symmetrically arranged, both ends of the cylinder (911) are provided with the telescopic rod (912), a partition disc (10) is fixedly arranged in the cylinder (911), both sides of the partition disc (10) are connected with one end of the corresponding contraction spring (914), the pneumatic pipe (915) is located on one side of the partition disc (10), and the partition disc (10) is provided with a notch corresponding to the pneumatic pipe (915).

6. The rapid prototyping, injection molding mold for footwear of claim 5, wherein: The pneumatic pipe (915) extends to the support part (6) through a gas pipeline and is communicated with an external high-pressure gas source, and the contraction strengths of the contraction springs (914) on both sides of the partition disc (10) are different.

7. The rapid prototyping, injection molding shoe mold of claim 4, wherein: The sidewall of the intermediate filler block is provided with a pair of auxiliary injection ports (8), the pneumatic pipe (915) extends to the support part (6) through a gas pipeline and is communicated with an external high-pressure gas source, and the cylinder (911) on one side of the pair of auxiliary injection ports (8) is communicated with the same gas pipeline.

8. The rapid prototyping, injection molding mold for footwear according to claim 7, characterized in that: The contraction strength of the contraction spring (914) in the cylinder (911) arranged in pairs is not the same.

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