Slide delay mechanism for injection mold

Abstract

The present application relates to the technical field of mould, in particular to a slider delay mechanism of injection mould, which is used to solve the problems of slider positioning deviation and damage to products during mould closing. The mechanism comprises a B plate and an A plate, the bottom of the A plate is provided with a guide column, the top of the B plate is provided with a guide sleeve, and the guide column and the guide sleeve are in sliding fit to improve the stability of mould closing. In the forming assembly, the slider seat is matched with the guide rod through the inclined hole: the inclined section of the guide rod drives the slider seat to move transversely to form a side hole structure, the vertical section of the guide rod stops the movement of the slider seat when entering the inclined hole, and the shoveling base is inserted into the side of the slider seat to resist the injection pressure. During demoulding, the inserting rod is first moved out of the inserting hole of the slider insert, the vertical section of the guide rod is moved out, then the inclined section drives the slider seat to reset, and the ejector rod pushes the ejector body to demould. The scheme controls the movement track of the slider through step-by-step action, reduces the mould closing deviation and the uneven force during demoulding, and simultaneously reduces the volume of the mould through compact layout.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a slider delay mechanism for injection molds. Background Technology

[0002] In the field of injection molding, for some plastic products with complex side holes or recesses, a slider mechanism is required for molding and demolding. Traditional slider mechanisms have some problems during mold closing and demolding.

[0003] During mold closing, due to the lack of effective guiding and stabilizing devices, the A and B plates of the mold are prone to shaking and deviation as they approach each other. This leads to inaccurate fit between the slider and the mold core and cavity, affecting the molding quality of the product and potentially damaging the mold. Moreover, traditional slider mechanisms do not provide precise control over the slider's movement. The slider may jam, fail to move to the correct position, or over-move during its movement, failing to meet the molding precision requirements of complex products.

[0004] During demolding, traditional slider mechanisms suffer from poor demolding sequence and coordination, easily leading to uneven demolding force. This can damage the product during demolding, causing deformation and cracking, thus reducing the product yield. In addition, traditional mold structures are often complex, with an unreasonable layout of components, resulting in larger mold size, higher manufacturing costs, and difficulties in installation, debugging, and maintenance.

[0005] Therefore, in order to solve the above problems and improve the molding quality, demolding effect and overall performance of injection molds, it is of great practical significance to develop a new type of injection mold slider delay mechanism. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as insufficient precision in controlling the movement of the slider mechanism, potential jamming, incomplete movement, or excessive movement of the slider during movement, which fails to meet the molding precision requirements of complex products. Traditional mold structures are often complex, with unreasonable layout of components, resulting in large mold volume, high manufacturing costs, and inconvenience in installation, debugging, and maintenance. Therefore, this invention proposes a slider delay mechanism for injection molds.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A slider delay mechanism for an injection mold includes a B plate and an A plate located above it. A guide post is fixedly installed at the bottom of the A plate, and a guide sleeve is fixedly installed at the top of the B plate. The guide post is slidably fitted inside the guide sleeve.

[0009] The molding assembly includes slider seats installed on both sides of the lower template and slider inserts fixed thereon. The top of the slider seats has an oblique hole, and the top of the slider inserts has an insertion hole.

[0010] The pushing assembly includes a guide rod, a shovel base, and an insert rod fixed to the bottom of the panel. The guide rod is engaged with an oblique hole, the shovel base is aligned with the side of the slider seat, and the insert rod is aligned with the insertion hole.

[0011] The demolding assembly includes an ejector plate that is slidably connected between square iron blocks and an ejector body fixed thereon;

[0012] During mold closing, the inclined section of the guide rod inserts into the inclined hole to drive the slider seat to move laterally. When the vertical section enters the inclined hole, the slider seat stops moving and the shovel base is inserted into its side. At the same time, the insert rod is inserted into the insertion hole. During demolding, the insert rod moves out of the insertion hole first. After the vertical section moves out, the inclined section drives the slider seat to reset. The ejector plate pushes up to drive the ejector body to demold.

[0013] In one possible design, the molding assembly further includes mounting brackets fixed to both sides of the lower template, with the slider seat slidably connected between the two mounting brackets.

[0014] In one possible design, the guide rod of the actuating assembly includes a main rod, a vertical section fixed to its bottom, and an inclined section fixed to the bottom of the vertical section, the inclination angle of the inclined section matching the inclined hole.

[0015] In one possible design, the demolding assembly further includes a return spring, with its two ends connected to the top of the ejector plate and the bottom of the B plate, respectively, for resetting the ejector plate.

[0016] In one possible design, a panel is fixedly mounted on the top of the A-plate, and the pushing component is integrated into the bottom of the panel.

[0017] In one possible design, the shovel base is inserted into the side of the slider seat when the vertical section enters the inclined hole to resist the injection pressure.

[0018] In one possible design, symmetrically arranged square irons are fixed to the bottom of the B plate, a base plate is fixed to the bottom of the square irons, and the demolding assembly is disposed between the square irons.

[0019] In one possible design, an upper template is fixedly installed at the bottom of the A-plate, and the lower template is used in conjunction with the upper template.

[0020] In this application, during mold closing, plate A moves closer to plate B, and the stability of mold closing is ensured by the setting of guide pillars and guide sleeves. At this time, multiple guide rods are inserted into the corresponding inclined holes in sequence. First, the inclined section is inserted into the inclined hole. At this time, the slider seat drives the slider insert to move laterally. When the vertical section enters the inclined hole, the slider seat stops moving. At the same time, the shovel base is inserted into one side of the slider seat to ensure the stability of the slider seat. While the vertical section enters the inclined hole, the panel drives the two insert rods to move down. The insert rods are inserted into the insert holes to realize the mold closing process.

[0021] During demolding, plates A and B move away from each other. The insert rod moves out of the insertion hole first, and the vertical section moves out of the inclined hole. When the inclined section moves out of the inclined hole, the slider seat begins to reset. The slider seat drives the slider insert to move laterally. The ejector plate moves up, driving the ejector body to move up. At this time, the ejector body pushes the finished product out, realizing the demolding process.

[0022] Beneficial effects: During the mold closing process, when plate A moves closer to plate B, the guide pillars and guide sleeves effectively ensure the stability of the mold closing, reduce the shaking and deviation of the mold during the mold closing process, and improve the service life of the mold and the quality stability of the molded products.

[0023] Multiple guide rods are sequentially inserted into corresponding angled holes. By utilizing the cooperation of the inclined and vertical sections with the angled holes, the lateral movement of the slider seat is precisely controlled. When the inclined section is inserted into the angled hole, the slider seat drives the slider insert to move laterally; when the vertical section enters the angled hole, the slider seat stops moving. This design makes the movement of the slider more controllable, meeting the molding requirements of complex products and ensuring product molding accuracy.

[0024] As the vertical section enters the inclined hole, the shovel base inserts into one side of the slider seat, further ensuring the stability of the slider seat after mold closing and preventing displacement of the slider seat due to pressure factors during injection molding, thereby ensuring the molding quality of the product.

[0025] During demolding, plates A and B move away from each other, and the components move in a specific sequence. The insert rod first moves out of the insertion hole, the vertical section moves out of the inclined hole, and when the inclined section moves out of the inclined hole, the slider seat begins to reset, driving the slider insert to move laterally. At the same time, the ejector plate moves up, driving the ejector body to eject the finished product. This orderly demolding process avoids damage to the product during demolding and improves the success rate and integrity of product demolding.

[0026] This slider delay mechanism organically combines the forming component, pushing component, and demolding component. The layout of each component is compact, making full use of the internal space of the mold. While ensuring the integrity of the mold function, it reduces the overall size of the mold, lowers the mold manufacturing cost, and also facilitates the installation, debugging, and maintenance of the mold. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a slider delay mechanism for an injection mold proposed in this utility model;

[0028] Figure 2 An exploded view of a slider delay mechanism for an injection mold according to this utility model;

[0029] Figure 3 This is a three-dimensional structural diagram of plate A in the slider delay mechanism of an injection mold proposed in this utility model;

[0030] Figure 4 This is a three-dimensional structural diagram of the panel in the slider delay mechanism of an injection mold proposed in this utility model.

[0031] Figure 5 This is a three-dimensional structural diagram of the mounting bracket and slider seat in the slider delay mechanism of an injection mold proposed in this utility model.

[0032] In the diagram: 1. Base plate; 2. Square iron; 3. B plate; 4. A plate; 5. Front panel; 6. Ejector plate; 7. Return spring; 8. Ejector body; 9. Guide sleeve; 10. Guide post; 11. Lower template; 12. Slider seat; 13. Guide rod; 14. Upper template; 15. Shovel base; 16. Insert rod; 17. Inclined section; 18. Vertical section; 19. Main rod; 20. Insertion hole; 21. Slider insert; 22. Angled hole; 23. Mounting bracket. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0034] In one embodiment: Refer to Figure 1-5 In practical applications, the slider delay mechanism is a whole mold structure in which multiple parts work together to complete the injection molding and demolding process.

[0035] The mold mainly consists of a basic frame formed by plate B3 and plate A4, with plate A4 positioned above plate B3. Guide pillars 10 are fixedly installed at the four bottom corners of plate A4, and guide sleeves 9 are correspondingly fixedly installed at the four top corners of plate B3. The guide pillars 10 are slidably connected inside plate B3. This design ensures precise guidance during mold closing, as plate A4 approaches plate B3, the guide pillars 10 slide within the guide sleeves 9, effectively preventing wobbling and deviation between plates A and B during this process. This guarantees mold closing stability and ensures accurate fit between the slider and the mold core and cavity, improving product molding quality and preventing mold damage due to inaccurate mold closing.

[0036] The lower template 11 is fixedly installed on the top of plate B3, and the upper template 14 is fixedly installed on the bottom of plate A4. The lower template 11 and the upper template 14 cooperate to form a cavity for molding plastic products. Molding components are provided on both sides of the lower template 11. The molding components include two mounting brackets 23 fixedly installed on one side of the lower template 11 and symmetrically arranged. The two mounting brackets 23 are slidably connected to the same slider seat 12. The top of the slider seat 12 has an oblique hole 22, and a slider insert 21 is fixedly installed on one side. The top of the slider insert 21 has an insertion hole 20. The slider insert 21 is used to mold complex structures such as side holes and side recesses on plastic products.

[0037] A pushing component is installed at the bottom of plate A4, and the pushing component is connected to plate A4 via panel 5. Panel 5 is fixedly installed at the top of plate A4. A guide rod 13 is fixedly installed at the bottom of panel 5. The guide rod 13 includes a main rod 19, a vertical section 18 is fixedly installed at the bottom of the main rod 19, and an inclined section 17 is fixedly installed at the bottom of the vertical section 18. Both the inclined section 17 and the vertical section 18 are used in conjunction with the inclined hole 22. A shovel base 15 is installed on both sides of the bottom of panel 5. The shovel base 15 is used in conjunction with the slider seat 12. At the same time, insertion rods 16 are also fixedly installed on both sides of the bottom of panel 5. The insertion rods 16 are used in conjunction with the insertion hole 20.

[0038] During the mold closing process, plate A 4 moves closer to plate B 3, and guide pillars 10 and guide sleeves 9 ensure mold closing stability. At this time, multiple guide rods 13 are inserted into the corresponding inclined holes 22 in sequence. The inclined section 17 is inserted into the inclined hole 22 first. Due to the inclined design of the inclined hole 22, the slider seat 12 moves laterally under the action of the guide rods 13, realizing the molding of side holes, side recesses and other structures of the plastic product. When the vertical section 18 enters the inclined hole 22, the slider seat 12 stops moving. At this time, the shovel base 15 is inserted into one side of the slider seat 12 to further ensure the stability of the slider seat 12 and prevent the slider seat 12 from being displaced due to pressure and other factors during injection molding, thus ensuring the molding accuracy of the product. At the same time, the panel 5 drives the two insert rods 16 to move down and insert the insert rods 16 into the insert holes 20, completing the mold closing process and preparing for subsequent injection molding.

[0039] A demolding assembly is provided at the bottom of plate B3. The demolding assembly includes two square irons 2 that are symmetrically arranged and fixedly installed at the bottom of plate B3. The bottom of the two square irons 2 is fixedly connected to the same base plate 1. The two square irons 2 are slidably connected to the same ejector plate 6. Multiple ejector bodies 8 are fixedly installed on the top of the ejector plate 6. Multiple return springs 7 are provided between the top of the ejector plate 6 and the bottom of plate B3.

[0040] This application can be used in the field of mold making, or in other fields applicable to this application.

[0041] In another embodiment: Reference Figure 1-5A sliding block delay mechanism for injection molds, used in the mold industry, involves the following steps during demolding: Plate A 4 and Plate B 3 move away from each other, and the insert rod 16 first moves out of the insertion hole 20, releasing the constraint on the sliding block insert 21. Simultaneously, the vertical section 18 moves out of the inclined hole 22. When the inclined section 17 moves out of the inclined hole 22, the sliding block seat 12 begins to reset, causing the sliding block insert 21 to move laterally, separating it from the molded plastic product. At this point, external power pushes the ejector plate 6 upwards, which in turn moves the ejector body 8 upwards, ejecting the finished product from the cavity, thus completing the demolding process. This orderly demolding sequence and coordinated action ensure uniform demolding force, preventing product damage during demolding, reducing product deformation and cracking, and improving product yield.

[0042] The entire mold has a compact and reasonable structure, and the layout of each component makes full use of the internal space of the mold. While ensuring the integrity of the mold's functions, it reduces the overall size of the mold, lowers the mold manufacturing cost, and also facilitates the installation, debugging and maintenance of the mold.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A slider delay mechanism for an injection mold, characterized in that, include: B plate (3) and A plate (4) located above it, with guide post (10) fixedly installed at the bottom of A plate (4) and guide sleeve (9) fixedly installed at the top of B plate (3), and guide post (10) slidingly fitted inside guide sleeve (9); The molding assembly includes a lower template (11), a slider seat (12) installed on both sides of the lower template (11), and a slider insert (21) fixed thereon. The slider seat (12) has an oblique hole (22) on its top, and the slider insert (21) has an insertion hole (20) on its top. The pushing assembly includes a panel (5) and a guide rod (13), a shovel base (15) and a plug rod (16) fixed to the bottom of the panel (5). The guide rod (13) is engaged with the inclined hole (22), the shovel base (15) is aligned with the side of the slider seat (12), and the plug rod (16) is aligned with the plug hole (20). The demolding assembly includes a square iron (2) and an ejector plate (6) slidably connected between the square iron (2) and an ejector body (8) fixed thereon.

2. The slider delay mechanism according to claim 1, characterized in that, The molding assembly also includes mounting brackets (23) fixed on both sides of the lower template (11), and the slider seat (12) is slidably connected between the two mounting brackets (23).

3. The slider delay mechanism according to claim 1, characterized in that, The guide rod (13) of the push assembly includes a main rod (19), a vertical section (18) fixed to its bottom, and an inclined section (17) fixed to the bottom of the vertical section (18), the inclination angle of the inclined section (17) matching the inclined hole (22).

4. The slider delay mechanism according to claim 1, characterized in that, The demolding assembly also includes a reset spring (7), the two ends of which are connected to the top of the ejector plate (6) and the bottom of the B plate (3) respectively, for resetting the ejector plate (6).

5. The slider delay mechanism according to claim 1, characterized in that, The panel (5) is fixedly installed on the top of the A plate (4), and the pushing component is integrated into the bottom of the panel (5).

6. The slider delay mechanism according to any one of claims 1-3, characterized in that, The shovel base (15) is inserted into the side of the slider seat (12) when the vertical section (18) enters the inclined hole (22) to resist the injection pressure.

7. The slider delay mechanism according to claim 1, characterized in that, The square iron (2) is fixedly and symmetrically arranged at the bottom of plate B (3), and the bottom plate (1) is fixed at the bottom of the square iron (2). The demolding assembly is arranged between the square irons (2).

8. The slider delay mechanism according to claim 4, characterized in that, The bottom of the A plate (4) is fixedly installed with an upper template (14), and the lower template (11) and the upper template (14) are used together.

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