Injection mold for solving problem of inverted buckle in product by using push plate slide block and oil cylinder

Abstract

The utility model provides an injection mold using a push plate sliding block and an oil cylinder to solve the problem of back-off inside a product, and relates to the field of helmet injection molds, the injection mold comprises a lower mold mechanism, the lower mold mechanism comprises a lower mold frame, an injection molding machine ejector rod, a fixing block, a first groove and a demolding oil cylinder, the top of the lower mold mechanism is provided with an upper mold, and the upper mold is provided with a lower mold; and an inverted buckle adjusting mechanism is arranged at the top of the lower die mechanism and comprises a pushing plate, a hollow groove, a front die block, a pushing oil cylinder, a sliding rear die block, a second groove and a side die block. After the pushing plate is jacked up, the second groove is aligned to one side of the top end of the fixing block, the pushing oil cylinder is started, the sliding rear module is pushed through the pushing oil cylinder, one side of the fixing block enters the sliding rear module, the distance between the front module and the sliding rear module is reduced, the mold stroke is reduced, and the mold quality is improved. The traditional process for a large back-off mold is simplified, and the cost of the mold is reduced.

Description

Technical Field

[0001] This utility model relates to the field of helmet injection mold technology, and in particular to an injection mold that uses a push plate slider and a hydraulic cylinder to solve the problem of internal undercutting of the product. Background Technology

[0002] Helmet injection molds are specialized molds used to manufacture helmets. They are made by injecting thermoplastic or thermosetting plastic into the mold cavity and allowing the plastic to cool and solidify under certain pressure, temperature and time conditions to obtain the desired helmet shell and related components.

[0003] In the existing technology, the large undercut grooves inside some helmets make the helmet manufacturing process more complicated, requiring the injection mold to have a larger stroke, which increases the cost of the injection mold. Secondly, the large undercut grooves also affect the demolding effect after the helmet is produced, thus affecting the helmet production rate. Utility Model Content

[0004] The purpose of this utility model is to provide an injection mold that uses a push plate slider and a hydraulic cylinder to solve the problem of internal undercutting in products. This addresses the issue mentioned in the background art, where the presence of large undercutting grooves in some helmets complicates the helmet manufacturing process, requires a large stroke in the injection mold, increases the cost of the injection mold, and also affects the demolding effect after helmet production, thus impacting the helmet production rate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a lower mold mechanism, wherein the lower mold mechanism includes a lower mold frame, an injection molding machine ejector rod, a fixing block, a first groove and a demolding cylinder, an upper mold is provided on the top of the lower mold mechanism, and an undercut adjustment mechanism is provided on the top of the lower mold mechanism, wherein the undercut adjustment mechanism includes a push plate, a hollow groove, a front module, a push cylinder, a sliding rear module, a second groove and a side module.

[0006] In a preferred embodiment, the top of the lower mold frame is movably connected to the bottom of the upper mold, and the interior of the lower mold frame has a movable opening, the inner wall of which is movably connected to the outer wall of the injection molding machine ejector rod.

[0007] In a preferred embodiment, the bottom end of the injection molding machine ejector pin is fixedly connected to the ejector end of the injection molding machine, and the top of the lower mold frame is fixedly connected to the bottom of the fixing block.

[0008] In a preferred embodiment, a first groove is provided on one side of the fixing block, and a placement groove is provided inside the lower mold frame. The inner wall of the placement groove is fixedly connected to the outer wall of the demolding cylinder housing.

[0009] In a preferred embodiment, the top of the injection molding machine push rod is fixedly connected to the bottom of the push plate, and the push plate has a hollow groove inside.

[0010] In a preferred embodiment, the internal space of the hollow slot can provide for the movement of the fixed block, and the top of the front end of the push plate is fixedly connected to the bottom of the front module.

[0011] In a preferred embodiment, the side of the push plate away from the front module is fixedly connected to the side of the push cylinder, and the extension end of the push cylinder is fixedly connected to the side of the sliding rear module.

[0012] In a preferred embodiment, a second groove is provided inside the side of the sliding module away from the push cylinder, and the inner wall of the second groove is movably connected to the top outer wall of the fixed block, and the inner wall of the first groove is movably connected to the top outer wall of the sliding module.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model first lifts the injection molding machine ejector rod through the ejector end of the injection molding machine, which in turn lifts the push plate. After the push plate is lifted, the second groove is aligned with the top side of the fixed block. The push cylinder is then activated, and the sliding rear module is pushed by the push cylinder, so that one side of the fixed block enters the interior of the sliding rear module, thereby reducing the distance between the front module and the sliding rear module. By setting up the push cylinder and the sliding rear module, the mold stroke is reduced, simplifying the process traditionally used for larger undercut molds and reducing mold costs.

[0015] 2. In this utility model, when demolding is required, after the fixed block enters the interior of the sliding rear module on one side, the demolding cylinder is activated. The top of the demolding cylinder lifts the injection-molded finished product for demolding. By reducing the distance between the front module and the sliding rear module, demolding of the finished product is facilitated, and the impact of large undercuts on demolding is reduced. Attached Figure Description

[0016] Figure 1 A schematic diagram of an injection mold for solving internal undercutting of a product using a push plate slider and a hydraulic cylinder, provided by this utility model;

[0017] Figure 2 A schematic diagram of the lower mold mechanism of an injection mold that uses a push plate slider and a hydraulic cylinder to solve the internal undercutting of a product, provided by this utility model;

[0018] Figure 3 This utility model provides a partial schematic diagram of an undercut adjustment mechanism for an injection mold that uses a push plate, slider, and hydraulic cylinder to resolve internal undercutting of a product.

[0019] Legend:

[0020] 1. Lower mold mechanism; 101. Lower mold frame; 102. Injection molding machine ejector rod; 103. Fixing block; 104. First groove; 105. Demolding cylinder; 2. Upper mold; 3. Inverted adjustment mechanism; 301. Push plate; 302. Hollow groove; 303. Front module; 304. Push cylinder; 305. Sliding rear module; 306. Second groove; 307. Side module. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 This utility model provides a technical solution including: a lower mold mechanism 1, which includes a lower mold frame 101, an injection molding machine ejector rod 102, a fixing block 103, a first groove 104, and a demolding cylinder 105. An upper mold 2 is provided on the top of the lower mold mechanism 1, and an undercut adjustment mechanism 3 is provided on the top of the lower mold mechanism 1. The undercut adjustment mechanism 3 includes a push plate 301, a hollow groove 302, a front module 303, a push cylinder 304, a sliding rear module 305, a second groove 306, and a side module 307.

[0023] In one embodiment, the top of the lower mold holder 101 is movably connected to the bottom of the upper mold 2, and the interior of the lower mold holder 101 has an opening for movement, the inner wall of which is movably connected to the outer wall of the injection molding machine ejector rod 102.

[0024] Specifically, the movable opening facilitates the guidance and positioning of the injection molding machine ejector rod 102, thereby facilitating the lifting of the push plate 301.

[0025] In one embodiment, the bottom end of the injection molding machine ejector rod 102 is fixedly connected to the ejector end of the injection molding machine, and the top of the lower mold holder 101 is fixedly connected to the bottom of the fixing block 103.

[0026] Specifically: the ejector pin 102 of the injection molding machine is lifted by the ejector end of the injection molding machine, which in turn lifts the push plate 301.

[0027] In one embodiment, a first groove 104 is provided on one side of the fixing block 103, and a placement groove is provided inside the lower mold frame 101, with the inner wall of the placement groove being fixedly connected to the outer wall of the housing of the demolding cylinder 105.

[0028] Specifically: The injection-molded finished product is lifted and demolded by the top of the demolding cylinder 105. The reduced distance between the front module 303 and the sliding rear module 305 facilitates demolding of the finished product and reduces the impact of large undercuts on demolding.

[0029] In one embodiment, the top of the injection molding machine push rod 102 is fixedly connected to the bottom of the push plate 301, and the push plate 301 has a hollow groove 302 inside.

[0030] Specifically: After the push plate 301 is lifted, the second groove 306 is aligned with the top side of the fixing block 103.

[0031] In one embodiment, the internal space of the hollow slot 302 provides for the movement of the fixed block 103, and the top of the front end of the push plate 301 is fixedly connected to the bottom of the front module 303.

[0032] Specifically: the hollow groove 302 is designed so that the push plate 301 is not affected by the fixing block 103 when it is lifted.

[0033] In one embodiment, the side of the push plate 301 away from the front module 303 is fixedly connected to one side of the push cylinder 304, and the extension end of the push cylinder 304 is fixedly connected to one side of the sliding rear module 305.

[0034] Specifically: Activate the push cylinder 304, and push the sliding module 305 by pushing the cylinder 304, so that one side of the fixed block 103 enters the interior of the sliding module 305.

[0035] In one embodiment, a second groove 306 is provided inside the side of the sliding module 305 away from the push cylinder 304, and the inner wall of the second groove 306 is movably connected to the top outer wall of the fixing block 103, and the inner wall of the first groove 104 is movably connected to the top outer wall of the sliding module 305.

[0036] Specifically: the distance between the front module 303 and the sliding rear module 305 is reduced, and the mold stroke is reduced by setting up the hydraulic cylinder 304 and the sliding rear module 305.

[0037] Working principle: First, the ejector pin 102 of the injection molding machine is lifted by the ejector end of the injection molding machine, which in turn lifts the push plate 301. After the push plate 301 is lifted, the second groove 306 is aligned with the top side of the fixed block 103. The push cylinder 304 is then activated, which pushes the sliding rear module 305, causing one side of the fixed block 103 to enter the interior of the sliding rear module 305. This reduces the distance between the front module 303 and the sliding rear module 305. When demolding is required, after one side of the fixed block 103 enters the interior of the sliding rear module 305, the demolding cylinder 105 is activated. The top of the demolding cylinder 105 lifts and demolds the injection-molded product.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A plastic injection mold for solving internal reverse screwing of a product by using a push plate slider and an oil cylinder, characterized in that, Include: Lower mold mechanism (1), the lower mold mechanism (1) includes lower mold frame (101), injection molding machine ejector rod (102), fixed block (103), first recess (104) and demolding oil cylinder (105), the top of the lower mold mechanism (1) is provided with upper mold (2), the top of the lower mold mechanism (1) is provided with reverse buckle adjusting mechanism (3), the reverse buckle adjusting mechanism (3) includes push plate (301), hollow slot (302), front module (303), push oil cylinder (304), sliding rear module (305), second recess (306) and side module (307).

2. The injection mold for solving the internal reverse thread of the product by using the push plate slider and the oil cylinder according to claim 1, characterized in that: The top of the lower mold frame (101) is movably connected with the bottom of the upper mold (2), and the inside of the lower mold frame (101) is provided with a movable opening, and the inner wall of the movable opening is movably connected with the outer wall of the injection molding machine ejector rod (102).

3. The injection mold for solving the internal reverse thread of the product by using the push plate slider and the oil cylinder according to claim 2, characterized in that: The bottom end of the injection molding machine ejector rod (102) is fixedly connected with the ejection end of the injection molding machine, and the top of the lower mold frame (101) is fixedly connected with the bottom of the fixed block (103).

4. The injection mold for solving the internal reverse thread of the product by the push plate slider and the oil cylinder according to claim 3, characterized in that: The side of the fixed block (103) is provided with a first recess (104), and the inside of the lower mold frame (101) is provided with a placing groove, and the inner wall of the placing groove is fixedly connected with the outer wall of the demolding oil cylinder (105).

5. The injection mold for solving the internal reverse thread of the product by using the push plate slider and the oil cylinder according to claim 1, characterized in that: The top of the injection molding machine ejector rod (102) is fixedly connected with the bottom of the push plate (301), and the inside of the push plate (301) is provided with a hollow slot (302).

6. The injection mold for solving the internal reverse thread of the product by the push plate slider and the oil cylinder according to claim 5, characterized in that: The inside space of the hollow slot (302) can provide the movement of the fixed block (103), and the top of the front end of the push plate (301) is fixedly connected with the bottom of the front module (303).

7. The injection mold for solving the internal reverse thread of the product by the push plate slider and the oil cylinder according to claim 6, characterized in that: The side of the push plate (301) away from the front module (303) is fixedly connected with one side of the push oil cylinder (304), and the extension end of the push oil cylinder (304) is fixedly connected with one side of the sliding rear module (305).

8. The injection mold for solving the internal reverse thread of the product by using the push plate slider and the oil cylinder according to claim 7, characterized in that: The side of the sliding rear module (305) away from the push oil cylinder (304) is provided with a second recess (306) inside, and the inner wall of the second recess (306) is movably connected with the top outer wall of the fixed block (103), and the inner wall of the first recess (104) is movably connected with the top outer wall of the sliding rear module (305).

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