CN216068483U - Injection mold - Google Patents
Injection mold Download PDFInfo
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- CN216068483U CN216068483U CN202121886107.2U CN202121886107U CN216068483U CN 216068483 U CN216068483 U CN 216068483U CN 202121886107 U CN202121886107 U CN 202121886107U CN 216068483 U CN216068483 U CN 216068483U
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Abstract
The utility model discloses an injection mold, which comprises an injection mold front mold and an injection mold rear mold, wherein the injection mold front mold and the injection mold rear mold are mutually matched and connected in an up-down arrangement mode, a runner is directly arranged in the injection mold front mold from top to bottom, the upper end of the runner is communicated with a glue inlet, the lower end of the runner is communicated with a hot nozzle, the diameter of the runner is gradually increased from the glue inlet to the hot nozzle, the runner is conical in shape, a front mold core capable of moving up and down is also arranged in the injection mold front mold, a front mold cavity is arranged in the middle of the front mold core, and the runner is communicated with the front mold cavity through the hot nozzle; the rear mould of the injection mould is provided with a rear mould core, the rear mould core is provided with a rear mould cavity, and the rear mould cavity is communicated with the front mould cavity and is jointed with the front mould cavity so as to form a forming cavity of a product. The utility model solves the problems of color lines and printing of injection products caused by overlarge injection pressure and flow rate of the rubber material, solves the problem that the rubber material possibly solidifies after entering the cavity due to the influence of the temperature of the rubber material, and improves the quality and the qualification rate of the products.
Description
Technical Field
The utility model relates to the technical field of injection molding, in particular to an injection mold.
Background
The mold, known as the "industrial parent", is a specialized tool that assists in the formation of metallic or non-metallic materials. There are many methods for plastic molding, and injection molding is the most commonly used plastic molding technique and one of the most common processing methods in the plastic industry at present, and can mold plastic products with complex shapes and structures at one time. The injection mold consists of a movable mold and a fixed mold, the movable mold is arranged on a movable template of the injection molding machine, and the fixed mold is arranged on a fixed template of the injection molding machine. And the movable and fixed die are closed to form a pouring system and a cavity during injection molding, and the plastic product is taken out by means of an ejection mechanism after the movable and fixed die are separated after injection molding is finished.
In the existing injection mold, single-cavity mold injection is carried out, when a plastic melt passes through a straight runner, the diameter of the runner is unchanged, so that the flow rate and the pressure are overlarge, and finally, an injection molding product may generate color lines and stamping traces to influence the injection molding effect. When molten rubber passes through a runner with a long diameter, the temperature of the rubber entering a cavity may be affected, so that some rubber is solidified, and the product quality is affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an injection mold, which solves the problems of color lines and printing of an injection product caused by overlarge injection pressure and flow rate of a sizing material and the problem that the sizing material possibly solidifies after entering a cavity due to the influence of the temperature of the sizing material.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an injection mold comprises an injection mold front mold and an injection mold rear mold which are mutually matched and connected in an upper and lower arrangement mode,
the front mold of the injection mold is directly provided with a runner from top to bottom, the upper end of the runner is communicated with a glue inlet, the lower end of the runner is communicated with a hot nozzle, the diameter of the runner is gradually increased from the glue inlet to the hot nozzle, the runner is conical in shape, a front mold core capable of moving up and down is further arranged in the front mold of the injection mold, a front mold cavity is arranged in the middle of the front mold core, and the runner is communicated with the front mold cavity through the hot nozzle;
the rear mould of the injection mould is provided with a rear mould core, the rear mould core is provided with a rear mould cavity, and the rear mould cavity is communicated with the front mould cavity and is jointed with the front mould cavity so as to form a forming cavity of a product;
the injection mold is characterized in that the rear mold of the injection mold is also provided with an ejection device, the ejection device is arranged at the bottom of the rear mold core, the ejection device can eject the front mold core through a reset rod to separate the front mold core from the rear mold core, and an ejector pin is used for ejecting a formed product to separate the product from a rear mold cavity of the rear mold core.
Preferably, the injection mold front mold comprises a positioning ring, a front mold fixing plate and a front mold core, the positioning ring is arranged in the front mold fixing plate, the front mold core is arranged on the bottom side of the front mold fixing plate through a reset rod, the reset rod is telescopically arranged in the rear mold base plate, and a front mold cavity of the front mold core is connected with a rubber inlet arranged on the positioning ring through a flow channel.
Preferably, the rear mold of the injection mold comprises a rear mold fixing plate, a rear mold seat plate, a rear mold core, a rear mold cushion block and an ejection device, wherein the rear mold cushion block is arranged on each of two sides of the rear mold fixing plate, the ejection device is arranged in the middle of the rear mold cushion block, the rear mold seat plate is arranged on the top side of the ejection device through the rear mold cushion block, and the rear mold core is arranged in the rear mold seat plate.
Preferably, ejecting device includes thimble, release link, ejecting backing plate and liftout plate, ejecting backing plate establishes the top side at back mould fixed plate, ejecting backing plate passes through the release link scalability and runs through in liftout plate and back mould bedplate and is connected with the front mould mold core, the release link includes first release link and second release link, and first release link runs through in the liftout plate and is connected with the second release link that runs through back mould bedplate, and the second release link is connected with the front mould mold core, the thimble is established in back mould fixed plate, the thimble passes ejecting backing plate, liftout plate, back mould bedplate and back mould core and product contact in proper order.
Preferably, the injection mold front mold further comprises a guide mechanism, wherein the guide mechanism is a guide pin, and the guide pin penetrates through and is fixed in guide holes of the front mold fixing plate and the rear mold seat plate.
Preferably, an injection guide pin is arranged between the front die fixing plate and the rear die base plate and corresponds to injection guide holes formed in the front die fixing plate and the rear die base plate respectively, the injection guide pins are arranged in the injection guide holes, six injection guide holes are formed, and included angles between two adjacent injection guide holes are 60 degrees.
Preferably, the injection mold rear mold further comprises a positioning piece, wherein the positioning piece is a positioning pin, and the positioning pin penetrates through the rear mold cushion block and the rear mold seat plate to enable the rear mold cushion block and the rear mold seat plate to be fixedly connected with the rear mold fixing plate.
Preferably, the rear mold of the injection mold further comprises a rear mold supporting rod, the rear mold supporting rod is arranged between the rear mold fixing plate and the rear mold seat plate, and the rear mold supporting rod and the rear mold cushion block jointly support the weight of the rear mold seat plate.
Preferably, the injection mold rear mold further comprises backing plate fixing rods, and the backing plate fixing rods are arranged on two sides of the rear mold fixing plate and used for fixing the ejection backing plate and the ejection plate.
Preferably, the injection mold further comprises a cooling device, the cooling device comprises a water inlet and a water outlet and a cooling water channel, the cooling water channel is respectively arranged inside the front mold core and the rear mold core, and the water inlet and the water outlet are respectively arranged on the right sides of the front mold core and the rear mold core and are respectively communicated with the cooling water channel.
The utility model has the advantages that: through the injection mold front mould and the injection mold rear mould that set up, injection mold front mould and injection mold rear mould cooperate and form the die cavity, at the injection molding sizing material in-process, through changing the taper that the runner diameter is crescent to change the sizing material velocity of flow, thereby improve the sizing material and produce the phenomenon of colored line, stamp to the injection moulding product, and be favorable to the sizing material to freeze and break away from the runner after the solidification. The hot nozzle is arranged, so that the phenomenon that the molten rubber material is solidified in the injection molding process is prevented; the simple ejection mechanism is arranged, the product can be easily ejected out after the product is cooled, and the production efficiency of the product is further improved.
Drawings
FIG. 1 is a schematic structural view of an injection mold of the present invention;
FIG. 2 is an exploded view of the injection mold of the present invention;
FIG. 3 is another exploded view of the injection mold of the present invention;
FIG. 4 is a cross-sectional view of an injection mold of the present invention;
FIG. 5 is a schematic structural view of a thimble of the injection mold of the present invention;
FIG. 6 is a schematic view of the front and back cavities of the injection mold of the present invention.
The reference numerals in the specification are as follows:
1. positioning rings; 2. a front mold fixing plate; 3. a front mold core; 4. an injection guide pin; 5. producing a product; 6. a guide pin; 7. a water inlet and outlet; 8. a rear mold base plate; 9. a thimble; 10. a base plate fixing rod; 11. positioning pins; 12. a rear mold fixing plate; 13. a rear mold support bar; 14. a rear mold cushion block; 15. ejecting the backing plate; 16. ejecting the plate; 17. a first restoring rod; 18. a rear mold core; 19. a second restoring rod; 20. a glue inlet; 21. a flow channel; 22. a hot nozzle; 23. a cooling water channel; 24. a front mold cavity; 25. and (4) forming a rear mold cavity.
Detailed Description
To facilitate an understanding of the utility model, the utility model is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In order to better explain the above injection mold so as to better understand the concept of the above injection mold, as shown in fig. 1, an injection mold includes: the injection mold comprises an injection mold front mold and an injection mold rear mold, wherein the injection mold front mold is used for being attached to the injection mold rear mold.
It should be noted that: the front mold and the rear mold of the injection mold are matched to form a forming cavity, the diameter of the runner is gradually increased from the glue inlet 20 to the hot nozzle 22 in the injection molding process, so that the molten glue keeps a uniform pressure gradient in the runner, the flowing of the glue is facilitated, the injection molding pressure is reduced, the phenomenon that the glue generates stamping marks on products is improved, and the section of the runner is conical in shape, so that the glue can be separated from the runner after being solidified by cooling. The hot nozzle 22 is arranged to prevent the molten rubber material from solidifying in the injection molding process; the ejector pins 9 are simple, so that the product 5 can be easily ejected out after the product is cooled, and the production efficiency of the product is further improved.
As shown in fig. 2, 4 and 6, the front mold of the injection mold comprises a front mold fixing plate 2, a positioning ring 1, a glue inlet 20, a front mold core 3, a runner 21 and a hot nozzle 22, the positioning ring 1 is arranged on the front mold fixing plate 2, the glue inlet 20 is communicated with the positioning ring 1, the front mold core 3 is arranged below the front mold fixing plate 2, a front mold cavity 24 is formed in the front mold core 3, the runner 21 penetrates through the front mold fixing plate 2 and the front mold core 3, the runner 21 is communicated with the glue inlet 20 and the front mold cavity 24, and the diameter of the runner 21 at the end of the front mold cavity 24 is larger than the diameter of the runner 21 at the end of the glue inlet 20. The rear mold of the injection mold comprises a rear mold fixing plate 12, an ejection cushion plate 15, an ejection plate 16, a rear mold base plate 8, a rear mold core 18 and two rear mold cushion blocks 14, wherein the two rear mold cushion blocks 14 are respectively arranged at two ends of the rear mold fixing plate 12, the ejection cushion plate 15 is arranged on the rear mold fixing plate 12, the ejection plate 16 is arranged on the ejection cushion plate 15, the ejection plate 16 and the ejection cushion plate 15 are both arranged between the two rear mold cushion blocks 14, two ends of the rear mold base plate 8 are respectively arranged on the two rear mold cushion blocks 14, the rear mold base plate 8 is provided with the rear mold core 18, the rear mold core 18 is provided with a rear mold cavity 25, the front mold core 3 is attached to the rear mold core 18, and the front mold cavity 24 is communicated with the rear mold cavity 25 to form a product forming cavity.
As shown in fig. 1, 2, 3 and 6, after the front mold core 3 and the rear mold core 18 are attached to each other, the front mold cavity 24 is communicated with the rear mold cavity 25 to form a product cavity, and after the glue is injected from the glue inlet 20, the glue enters the cavity through the flow channel 21 and the hot nozzle 22, and is cooled and shaped to form the product 5.
It should be further noted that when the rubber enters the flow channel 21 from the rubber inlet 20, the diameter of the flow channel gradually increases from the rubber inlet 20 to the hot nozzle 22, so that the flow rate and pressure of the rubber are reduced, the phenomenon that the rubber generates stamping marks on the product 5 is improved, and the section of the flow channel 21 is conical, which is beneficial to the separation of the rubber from the flow channel 21 after the rubber is solidified by cooling. The hot nozzle 22 is arranged to prevent the molten rubber material from solidifying in the injection molding process; the ejector pins 9 of the simple ejection mechanism can easily eject the product after the product is cooled, and the production efficiency of the product is further improved.
In the process of attaching the front mold core 3 to the rear mold core 18, for example, the front mold of the injection mold further comprises a guide mechanism, the guide mechanism comprises four guide pins 6, and the four guide pins 6 are respectively arranged at four end angle positions of the front mold fixing plate 2; four guide holes matched with the guide pins 6 are formed in the rear mold base plate 8, and the four guide pins 6 penetrate through the four guide holes respectively; the injection mold front mold and the injection mold rear mold respectively comprise six injection guide pins 4, and the injection guide pins 4 are respectively arranged on the front mold fixing plate 2 and the rear mold seat plate 8; six injection guide holes matched with the injection guide pins 4 are respectively formed in the front mold fixing plate 2 and the rear mold base plate 8, and the included angle between every two adjacent injection guide holes is 60 degrees; the injection mold rear mold also comprises a positioning piece, the positioning piece comprises four positioning pins 11, and the four positioning pins 11 are respectively arranged at four end corner positions of a rear mold fixing plate 12; four positioning holes are respectively formed in the rear mold fixing plate 12, the rear mold base plate 8 and the two rear mold cushion blocks 14, and the four positioning pins 11 respectively correspond to the four positioning holes, namely the four positioning pins 11 penetrate through the two rear mold cushion blocks 14 to connect the rear mold fixing plate 12 and the rear mold base plate 8; the injection mold back mould also comprises two backing plate fixing rods 10, and the two backing plate fixing rods 10 are arranged on two sides of the back mould fixing plate 12 and used for fixing an ejection backing plate 15 and an ejection plate 16.
As shown in fig. 2, 4 and 5, in order to eject the formed product from the rear mold cavity 25, the injection mold further includes an ejection device, the ejection device includes an ejector pin 9, a first reset rod 17 and a second reset rod 19, the first reset rod 17 and the second reset rod 19 are respectively disposed at four corners of the ejection pad 15, and the ejector pin 9 is disposed at the center of the rear mold fixing plate 12; the injection mold further comprises a cooling device, the cooling device comprises a water inlet and outlet 7 and a cooling water channel 23, the cooling water channel 23 is respectively arranged inside the front mold core 3 and the rear mold core 18, and the water inlet and outlet 7 is respectively arranged on the right sides of the front mold core 3 and the rear mold core 18 and is communicated with the cooling water channel 23; in this manner, by raising the ejector shim plate 15, the reset rod 17 is raised to raise the reset rod 19, so that the front mold core 3 is separated from the rear mold core 18, and then the product is ejected from the rear mold cavity 25 through the ejector pins 9.
According to the injection mold, the front injection mold and the rear injection mold are matched to form the cavity, the diameter of the straight runner 21 is changed to change the flow speed of the rubber material during the rubber material injection process, so that the phenomena of color lines and stamping of the rubber material on an injection molded product are improved, and the section of the runner 21 is conical, so that the rubber material can be separated from the runner after being solidified by cooling. The hot nozzle 22 is arranged to prevent the molten rubber material from solidifying in the injection molding process; the ejector pins 9 of the simple ejection mechanism can easily eject the product after the product is cooled, and the production efficiency of the product is further improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides an injection mold, includes injection mold front mould and injection mold back mould, the above-mentioned, lower mode of setting mutually supports and connects its characterized in that behind injection mold front mould and the injection mold:
a runner (21) is directly arranged in the front mold of the injection mold from top to bottom, the upper end of the runner (21) is communicated with a glue inlet (20), the lower end of the runner is communicated with a hot nozzle (22), the diameter of the runner (21) is gradually increased from the glue inlet (20) to the hot nozzle (22), the runner is conical, a front mold core (3) capable of moving up and down is further arranged in the front mold of the injection mold, a front mold cavity (24) is arranged in the middle of the front mold core (3), and the runner (21) is communicated with the front mold cavity (24) through the hot nozzle (22);
the rear mould of the injection mould is provided with a rear mould core (18), the rear mould core (18) is provided with a rear mould cavity (25), and the rear mould cavity (25) is communicated with the front mould cavity (24) and is jointed with the front mould cavity so as to form a forming cavity of the product (5);
the rear mold of the injection mold is also provided with an ejection device, the ejection device is arranged at the bottom of the rear mold core (18), the ejection device can eject the front mold core (3) through a reset rod to separate the front mold core from the rear mold core (18), and an ejector pin (9) ejects a molded product (5) to separate the product (5) from a rear mold cavity (25) of the rear mold core (18).
2. An injection mold according to claim 1, characterized in that: the injection mold front mold comprises a positioning ring (1), a front mold fixing plate (2) and a front mold core (3), wherein the positioning ring (1) is arranged in the front mold fixing plate (2), the front mold core (3) is arranged on the bottom side of the front mold fixing plate (2) through a reset rod, the reset rod is arranged in a rear mold base plate (8) in a telescopic mode, and a front mold cavity (24) of the front mold core (3) is connected with a rubber inlet (20) formed in the positioning ring (1) through a flow channel (21).
3. An injection mold according to claim 1, characterized in that: injection mold back mould, including back mould fixed plate (12), back mould bedplate (8), back mould mold core (18), back mould cushion (14) and ejecting device, the both sides of back mould fixed plate (12) are equipped with back mould cushion (14) respectively, the intermediate position of back mould cushion (14) is equipped with ejecting device, ejecting device's top side is equipped with back mould bedplate (8) through back mould cushion (14), is equipped with back mould mold core (18) in back mould bedplate (8).
4. An injection mould according to claim 1 or 3, characterized in that: the ejection device comprises ejector pins (9), a reset rod, an ejection base plate (15) and an ejection plate (16), wherein the ejection base plate (15) is arranged on the top side of a rear die fixing plate (12), the ejection base plate (15) is connected with a front die core (3) through the reset rod in a telescopic mode of penetrating through the ejection plate (16) and a rear die base plate (8), the reset rod comprises a first reset rod (17) and a second reset rod (19), the first reset rod (17) penetrates through the ejection plate (16) and is connected with the second reset rod (19) penetrating through the rear die base plate (8), the second reset rod (19) is connected with the front die core (3), the ejector pins (9) are arranged in the rear die fixing plate (12), and the ejector pins (9) sequentially penetrate through the ejection base plate (15), the ejection plate (16), the rear die base plate (8) and the rear die core (18) to be in contact with a product (5).
5. An injection mold according to claim 1, characterized in that: the injection mold front mold further comprises a guide mechanism, the guide mechanism is a guide pin (6), and the guide pin (6) penetrates through and is fixed in guide holes of the front mold fixing plate (2) and the rear mold seat plate (8).
6. An injection mould according to claim 2 or 5, characterized in that: the injection guide structure is characterized in that an injection guide pin (4) is arranged between the front die fixing plate (2) and the rear die base plate (8), the injection guide pin (4) corresponds to injection guide holes formed in the front die fixing plate (2) and the rear die base plate (8) respectively, the injection guide pin (4) is arranged in the injection guide holes, six injection guide holes are formed, and included angles between two adjacent injection guide holes are 60-degree in distribution.
7. An injection mold according to claim 1, characterized in that: the injection mold rear mold further comprises a positioning piece, the positioning piece is a positioning pin (11), and the positioning pin (11) penetrates through the rear mold cushion block (14) and the rear mold seat plate (8), so that the rear mold cushion block (14) and the rear mold seat plate (8) are fixedly connected with the rear mold fixing plate (12).
8. An injection mold according to claim 1, characterized in that: the rear mould of the injection mould further comprises a rear mould supporting rod (13), the rear mould supporting rod (13) is arranged between the rear mould fixing plate (12) and the rear mould seat plate (8), and the rear mould supporting rod (13) and the rear mould cushion block (14) jointly support the weight of the rear mould seat plate (8).
9. An injection mold according to claim 1, characterized in that: the injection mold rear mold further comprises a backing plate fixing rod (10), wherein the backing plate fixing rod (10) is arranged on two sides of the rear mold fixing plate (12) and used for fixing an ejection backing plate (15) and an ejection plate (16).
10. An injection mold according to claim 1, characterized in that: the injection mold further comprises a cooling device, the cooling device comprises a water inlet and outlet (7) and a cooling water channel (23), the cooling water channel (23) is respectively arranged inside the front mold core (3) and the rear mold core (18), and the water inlet and outlet (7) is respectively arranged on the right sides of the front mold core (3) and the rear mold core (18) and is respectively communicated with the cooling water channel (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121886107.2U CN216068483U (en) | 2021-08-12 | 2021-08-12 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121886107.2U CN216068483U (en) | 2021-08-12 | 2021-08-12 | Injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN216068483U true CN216068483U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121886107.2U Active CN216068483U (en) | 2021-08-12 | 2021-08-12 | Injection mold |
Country Status (1)
| Country | Link |
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| CN (1) | CN216068483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199720A1 (en) * | 2021-08-12 | 2022-09-29 | 广东海洋大学 | Injection mold |
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2021
- 2021-08-12 CN CN202121886107.2U patent/CN216068483U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199720A1 (en) * | 2021-08-12 | 2022-09-29 | 广东海洋大学 | Injection mold |
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