Injection mold

Abstract

The utility model discloses an injection mold, which relates to the technical field of injection molds and comprises a fixed mold, a mold frame, a movable mold and an ejection mechanism, the movable mold and the ejection mechanism are arranged on the mold frame, and the ejection mechanism comprises an ejection seat slidably arranged in the mold frame and an inclined ejection structure arranged on the ejection seat. The pitched roof structure comprises a pitched roof insert core and a pull needle, the pitched roof insert core is used for enclosing a product cavity together with the movable mold and the fixed mold and is used for ejecting a product out of the product cavity, the pull needle is arranged on the ejection seat, and the pitched roof insert core is arranged in the movable mold in a sliding manner; and the pull needle penetrates out of the mold frame and extends into the movable mold to be connected with the inclined ejector insert core through a quick disassembly and assembly structure. According to the injection mold, the problem of insufficient space is solved, and meanwhile, the assembly and debugging difficulty and the production cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and specifically to an injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products. Specifically, they refer to the process of injecting molten plastic into a product cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product.

[0003] Currently, an ejector mechanism is generally used to eject the product from the product cavity. The drive mechanism applies thrust to the ejector mechanism, and the angled ejector and ejector pin of the ejector mechanism push the product away from the product cavity.

[0004] However, the existing injection mold's angled ejector is relatively thick and occupies a large space in the injection mold, affecting the spatial arrangement of the injection mold. In addition, the material of the angled ejector is required to be hard, wear-resistant, have appropriate elasticity, and not easily broken, which is more expensive than other ejector materials, resulting in high production costs for injection molds. At the same time, the angled ejector is fixed to the ejector seat with screws, which makes the assembly and debugging of the injection mold difficult. Utility Model Content

[0005] To address the aforementioned deficiencies in existing technologies, this utility model provides an injection mold that solves the problem of insufficient space while reducing assembly and debugging difficulties and production costs.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An injection mold includes a fixed mold, a mold base, a movable mold, and an ejection mechanism disposed on the mold base. The ejection mechanism includes an ejector seat slidably disposed within the mold base and an angled ejector structure disposed on the ejector seat. The angled ejector structure includes an angled ejector insert for forming a product cavity together with the movable mold and the fixed mold and for ejecting the product from the product cavity, and a pull pin disposed on the ejector seat. The angled ejector insert is slidably disposed within the movable mold, and the pull pin extends out of the mold base and into the movable mold, connecting with the angled ejector insert via a quick-release structure.

[0008] The quick-release structure includes a T-slot that is disposed on the inclined insert and passes through the inclined insert, and a T-head that is disposed on the pull pin and is adapted to the T-slot.

[0009] The inclined ejector includes a molding ejector portion and an inclined connecting portion. The molding ejector portion is used to form the product cavity together with the moving mold and the fixed mold and to eject the product from the product cavity. The T-slot is provided on the connecting portion.

[0010] The pull pin is provided with a foolproof pressure head, and the ejector seat is provided with a foolproof pressure groove adapted to the foolproof pressure head. The pull pin is pressed against the ejector seat by the foolproof pressure head and the foolproof pressure groove.

[0011] The ejector seat includes a base plate, a pressure plate, and a mounting plate. The pressure plate presses the mounting plate onto the base plate through a pressing structure, and the pressure plate is fixedly connected to the base plate through a locking member. The mounting plate and the base plate together form the anti-foolproof pressing groove.

[0012] The anti-mistake pressure groove includes an elongated groove disposed on the mounting plate for accommodating the anti-mistake pressure head and a circular hole adapted to the pull pin and penetrating the mounting plate. The circular hole is located in the elongated groove, and the anti-mistake pressure head has an anti-mistake plane that cooperates with the straight groove wall of the elongated groove.

[0013] The pressure plate is provided with a mounting plate clearance hole that penetrates the pressure plate, and the side of the pressure plate near the base plate is provided with two pressure grooves. The two pressure grooves are located on opposite sides of the mounting plate clearance hole and are connected to the mounting plate clearance hole. The opposite sides of the mounting plate are respectively provided with pressure ears that are adapted to the pressure grooves. The two pressure ears correspond one-to-one with the two pressure grooves. The two pressure ears and the two pressure grooves constitute the clamping structure.

[0014] The ejection mechanism further includes multiple ejector pins disposed on the ejector seat. The ejector pins pass through the mold frame and through the moving mold. The ejector pins, together with the moving mold, the fixed mold, and the inclined ejector pin, form the product cavity and are used to eject the product from the product cavity.

[0015] The mold frame is provided with a sliding guide structure, the ejector seat is slidably disposed on the sliding guide structure, and an elastic element is provided between the ejector seat and the mold frame.

[0016] The mold frame includes an upper mold frame plate, a lower mold frame plate, and a support plate connected between the upper mold frame plate and the lower mold frame plate. The sliding guide structure is a guide post disposed between the upper mold frame plate and the lower mold frame plate. The ejector seat and the elastic element are both sleeved on the guide post, and the elastic element is located between the ejector seat and the upper mold frame plate. The lower mold frame plate is provided with a through hole for the drive mechanism to extend into and lift the ejector seat.

[0017] By adopting the above technical solution, the beneficial effects of this utility model are:

[0018] The injection mold provided by this utility model replaces the long traditional angled ejector with a shorter angled ejector, and uses a pull pin to connect the angled ejector to the ejector seat. This design not only shortens the length of the angled ejector by more than 70%, reducing the material and processing costs of the angled ejector, but also allows the shortened angled ejector to be directly installed on the moving mold, eliminating the clearance slot for the angled ejector on the ejector seat. This saves space for the installation of other ejectors on the ejector seat, which is beneficial for the spatial arrangement of the injection mold and solves the problem of insufficient space in the injection mold. At the same time, the pull pin and the angled ejector are connected by a quick-release structure, which facilitates assembly and debugging and reduces the difficulty of assembly and debugging. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the injection mold of this utility model;

[0020] Figure 2 yes Figure 1 Exploded view of the ejector mechanism;

[0021] Figure 3 yes Figure 2 A structural diagram of the other side;

[0022] In the diagram: 1. Mold frame; 11. Upper mold frame plate; 12. Lower mold frame plate; 121. Through hole; 13. Support plate; 2. Moving mold; 21. Moving mold body; 22. Mold core; 23. Insert; 3. Angled ejector; 31. Molding ejection part; 32. Connecting part; 321. T-slot; 4. Pull pin; 41. T-head; 42. Anti-foolproof pressure head; 421. Anti-foolproof plane; 5. Ejector seat; 51. Base plate; 52. Pressure plate; 521. Mounting plate clearance hole; 522. Pressure groove; 53. Mounting plate; 531. Long oval groove; 532. Round hole; 533. Pressure ear; 6. Locking component; 7. Ejector pin; 8. Elastic component; 9. Guide post. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0024] like Figures 1 to 3As shown, this embodiment provides an injection mold, including a fixed mold (not shown in the figure), a mold base 1, a movable mold 2 and an ejection mechanism disposed on the mold base 1. The ejection mechanism includes an ejector seat 5 slidably disposed in the mold base 1 and an inclined ejector structure disposed on the ejector seat 5. The inclined ejector structure includes an inclined ejector 3 for forming a product cavity together with the movable mold 2 and the fixed mold and for ejecting the product from the product cavity, and a pull pin 4 disposed on the ejector seat. The inclined ejector 3 is slidably disposed in the movable mold 2. The pull pin 4 passes through the mold base 1 and extends into the movable mold 2 and is connected to the inclined ejector 3 through a quick-release structure.

[0025] In this embodiment, the injection mold replaces the long traditional angled ejector with a shorter angled ejector 3, and uses a pull pin 4 to connect the angled ejector 3 to the ejector seat 5. This not only shortens the length of the angled ejector 3 by more than 70%, reducing the material and processing costs of the angled ejector 3, but also allows the shortened angled ejector 3 to be directly installed on the moving mold 2, eliminating the clearance groove of the angled ejector 3 on the ejector seat 5. This saves space for the installation of other ejectors on the ejector seat 5, which is beneficial for the spatial arrangement of the injection mold and solves the problem of insufficient space in the injection mold. At the same time, the pull pin 4 and the angled ejector 3 are connected by a quick-release structure, which facilitates assembly and debugging and reduces the difficulty of assembly and debugging.

[0026] The quick-assembly / disassembly structure in this embodiment includes a T-slot 321 disposed on and penetrating the inclined insert 3, and a T-head 41 disposed on the pull pin 4 and adapted to the T-slot 321. This quick-assembly / disassembly structure enables rapid assembly and disassembly of the inclined insert 3 and the pull pin 4, facilitating assembly and debugging by workers, saving assembly and debugging time, and improving work efficiency.

[0027] In this embodiment, the inclined ejector 3 includes a molding ejector part 31 and an inclined connecting part 32. The molding ejector part 31 is used to form a product cavity together with the moving mold 2 and the fixed mold and to eject the product from the product cavity. The T-slot 321 is provided on the connecting part 32.

[0028] Specifically, the moving mold 2 includes a moving mold body 21, a mold core 22 disposed within the moving mold body 21, and an insert 23 penetrating the moving mold body 21 and the mold core 22. The angled ejector 3 is slidably disposed within the insert 23. The molding ejection part 31 of the angled ejector 3, together with the insert 23, the mold core 22, the moving mold body 21, and the fixed mold, forms a product cavity. The pull pin 4 passes through the mold frame 1 and extends into the insert 23, connecting with the connecting part 32 of the angled ejector 3 through a T-head and a T-slot 321.

[0029] In this embodiment, the pull pin 4 is provided with a foolproof pressure head 42, and the ejector seat 5 is provided with a foolproof pressure groove that matches the foolproof pressure head 42. The pull pin 4 is pressed onto the ejector seat 5 by the foolproof pressure head 42 and the foolproof pressure groove. The foolproof pressure head 42 and the foolproof pressure groove cooperate with each other, which not only eliminates the need for screws, making the assembly of the pull pin 4 and the ejector seat 5 easy, but also allows the operator to accurately connect the pull pin 4 and the ejector seat 5 without spending attention, experience, or professional knowledge, thus saving assembly time.

[0030] In this embodiment, the ejector seat 5 includes a base plate 51, a pressure plate 52, and a mounting plate 53. The pressure plate 52 presses the mounting plate 53 onto the base plate 51 through a pressing structure, and the pressure plate 52 is fixedly connected to the base plate 51 through a locking member (bolt) 6. The mounting plate 53 and the base plate 51 together form a foolproof pressing groove.

[0031] Specifically, the anti-mistake pressure groove includes an elongated groove 531 disposed on the mounting plate 53 for accommodating the anti-mistake pressure head 42 and a circular hole 532 adapted to the pull pin 4 and penetrating the mounting plate 53. The circular hole 532 is located in the elongated groove 531, and the anti-mistake pressure head 42 has an anti-mistake plane 421 that cooperates with the straight groove wall of the elongated groove 531.

[0032] In this embodiment, the pressure plate 52 is provided with a mounting plate clearance hole 521 that penetrates the pressure plate 52, and two pressure grooves 522 are provided on the side of the pressure plate 52 near the bottom plate 51. The two pressure grooves 522 are located on opposite sides of the mounting plate clearance hole 521 and are connected to the mounting plate clearance hole 521. The opposite sides of the mounting plate 53 are respectively provided with pressure ears 533 that are adapted to the pressure grooves 522. The two pressure ears 533 correspond one-to-one with the two pressure grooves 522. The two pressure ears 533 and the two pressure grooves 522 constitute the above-mentioned pressing structure. That is, when the pressure plate 52 is fixed on the bottom plate 51 by the locking member 6, the pressure plate 52 simultaneously presses the mounting plate 53 onto the bottom plate 51, and the two pressure ears 533 are respectively located in the two pressure grooves 522.

[0033] The ejection mechanism in this embodiment also includes multiple ejector pins 7 disposed on the ejector seat 5. The ejector pins 7 pass through the mold frame 1 and through the moving mold 2. The ejector pins 7 are used to form a product cavity together with the moving mold 2, the fixed mold and the inclined ejector 3 and to eject the product from the product cavity. The structure of the ejector pins 7 and the connection method between the ejector pins 7 and the ejector seat 5 are existing technologies and will not be described in detail here.

[0034] In this embodiment, the mold frame 1 is provided with a sliding guide structure, the ejector seat 5 is slidably disposed on the sliding guide structure, and an elastic element 8 is provided between the ejector seat 5 and the mold frame 1. This arrangement improves the linearity of the ejector seat 5's sliding.

[0035] Specifically, the mold frame 1 includes an upper mold frame plate 11, a lower mold frame plate 12, and a support plate 13 connected between the upper mold frame plate 11 and the lower mold frame plate 12. The sliding guide structure is a guide post 9 disposed between the upper mold frame plate 11 and the lower mold frame plate 12. The ejector seat 5 and the elastic element 8 are both sleeved on the guide post 9, and the elastic element 8 is located between the ejector seat 5 and the upper mold frame plate 11. The lower mold frame plate 12 is provided with a through hole 121 for the drive mechanism (not shown in the figure) to extend into and lift the ejector seat 5. In this embodiment, the elastic element 8 is preferably a spring.

[0036] The above is only one embodiment of the injection mold of this utility model; there are many other embodiments, which will not be elaborated here. In summary, the injection mold of this utility model, by replacing the long traditional angled ejector with a shorter angled ejector 3 and using a pull pin 4 to connect the angled ejector 3 to the ejector seat 5, not only shortens the length of the angled ejector 3 by more than 70%, reducing the material and processing costs of the angled ejector 3, but also allows the shortened angled ejector 3 to be directly installed on the moving mold 2, eliminating the clearance groove of the angled ejector 3 on the ejector seat 5, saving space for the installation of other ejectors on the ejector seat 5, which is beneficial to the spatial arrangement of the injection mold and solves the problem of insufficient space in the injection mold. At the same time, the pull pin 4 and the angled ejector 3 are connected by a quick-release structure, and the pull pin 4 and the ejector seat 5 are connected by a clamping and foolproof structure, eliminating the screw-locking process, facilitating assembly and debugging, reducing the difficulty of assembly and debugging, and improving work efficiency.

[0037] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.

Claims

1. An injection mold, comprising a fixed mold, a mold base, a movable mold disposed on the mold base, and an ejection mechanism, wherein the ejection mechanism comprises an ejector seat slidably disposed within the mold base and an inclined ejector structure disposed on the ejector seat, characterized in that, The inclined ejector structure includes an inclined ejector for forming a product cavity together with the moving mold and the fixed mold and for ejecting the product from the product cavity, and a pull pin disposed on the ejector seat. The inclined ejector is slidably disposed in the moving mold, and the pull pin extends out of the mold frame and into the moving mold and is connected to the inclined ejector through a quick-release structure.

2. The injection mold according to claim 1, characterized in that, The quick-release structure includes a T-slot disposed on the inclined insert and passing through the inclined insert, and a T-head disposed on the pull pin and adapted to the T-slot.

3. The injection mold according to claim 2, characterized in that, The inclined ejector includes a molding ejection portion and an inclined connecting portion. The molding ejection portion is used to form the product cavity together with the moving mold and the fixed mold and to eject the product from the product cavity. The T-slot is provided on the connecting portion.

4. The injection mold according to claim 1, characterized in that, The pull pin is provided with a foolproof pressure head, and the ejector seat is provided with a foolproof pressure groove adapted to the foolproof pressure head. The pull pin is pressed against the ejector seat by the foolproof pressure head and the foolproof pressure groove.

5. The injection mold according to claim 4, characterized in that, The ejector seat includes a base plate, a pressure plate, and a mounting plate. The pressure plate presses the mounting plate onto the base plate through a pressing structure, and the pressure plate is fixedly connected to the base plate through a locking member. The mounting plate and the base plate together form the anti-foolproof pressing groove.

6. The injection mold according to claim 5, characterized in that, The anti-mistake pressure groove includes an elongated groove disposed on the mounting plate for accommodating the anti-mistake pressure head and a circular hole adapted to the pull pin and penetrating the mounting plate. The circular hole is located in the elongated groove, and the anti-mistake pressure head has an anti-mistake plane that mates with the straight groove wall of the elongated groove.

7. The injection mold according to claim 5, characterized in that, The pressure plate is provided with a mounting plate clearance hole that penetrates the pressure plate, and the side of the pressure plate near the base plate is provided with two pressure grooves. The two pressure grooves are located on opposite sides of the mounting plate clearance hole and are connected to the mounting plate clearance hole. The opposite sides of the mounting plate are respectively provided with pressure ears that are adapted to the pressure grooves. The two pressure ears correspond one-to-one with the two pressure grooves. The two pressure ears and the two pressure grooves constitute the clamping structure.

8. The injection mold according to claim 1, characterized in that, The ejection mechanism also includes multiple ejector pins disposed on the ejector seat. The ejector pins pass through the mold frame and through the moving mold. The ejector pins are used to form the product cavity together with the moving mold, the fixed mold and the inclined ejector pin, and are used to eject the product from the product cavity.

9. The injection mold according to any one of claims 1 to 8, characterized in that, The mold frame is provided with a sliding guide structure, the ejector seat is slidably disposed on the sliding guide structure, and an elastic element is provided between the ejector seat and the mold frame.

10. The injection mold according to claim 9, characterized in that, The mold frame includes an upper mold frame plate, a lower mold frame plate, and a support plate connected between the upper mold frame plate and the lower mold frame plate. The sliding guide structure is a guide post disposed between the upper mold frame plate and the lower mold frame plate. The ejector seat and the elastic element are both sleeved on the guide post, and the elastic element is located between the ejector seat and the upper mold frame plate. The lower mold frame plate is provided with a through hole for the drive mechanism to extend into and lift the ejector seat.

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