Mold opening structure of inverted plastic mold

Abstract

The utility model discloses a mould opening structure of an inverted plastic mould, which relates to the technical field of inverted plastic moulds and comprises a bottom plate, a mould plate is arranged at the top of the bottom plate, mounting grooves are arranged on two sides of the mould plate, ejection mechanisms are arranged in the mounting grooves, and positioning rods are arranged at two ends of the side edge of the bottom plate. Square iron is arranged below the bottom plate and located on the outer side of the positioning rod, a first pressing plate and a second pressing plate are arranged in the middles of the square iron at the two ends, a hot runner plate is arranged at the bottom of the square iron, exhaust grooves are formed in the side edge of the hot runner plate, and connecting mechanisms are arranged on the side faces of the hot runner plate and the second pressing plate. According to the upside-down mounting plastic mold, the mold opening stroke design is optimized, the mold strength is improved, the demolding conditions are improved, and the overall performance and the using effect of the upside-down mounting plastic mold are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flip plastic mould technical field especially flip plastic mould's mould opening structure. BACKGROUND

[0002] The existing plastic mould is a combination type plastic mould for compression molding, extrusion molding, injection molding, blow molding and low foaming molding, and various tools and products used in our daily production and life, such as the base of a machine tool, the outer shell of a machine body, a screw head, a button and the outer shell of various household appliances, are closely related to the mould, the shape of the mould determines the appearance of these products, and the processing mode and precision of the mould determine the quality of these products, the flip plastic mould as a special mould structure has unique advantages in the production of specific plastic products, compared with the traditional vertical mould, the structure and process characteristics of the flip mould can better meet the production requirements in some application scenarios, such as improving product quality and shortening the molding cycle, however, the flip plastic mould also faces some technical challenges in the design, manufacturing and use process, and needs in-depth research and development.

[0003] In the mould opening process of the flip plastic mould, the separation direction of the core and the cavity is opposite to the thrust direction of the oil cylinder ejection mechanism, which may cause uneven stress of the mould, and then reduce the overall strength of the mould, under long-term use, the mould may deform, crack and the like, affecting the molding quality of the product and the service life of the mould, secondly, unreasonable mould gap may cause demolding difficulty, which not only affects the production efficiency, but also may cause product damage or mould damage. UTILITY MODEL CONTENTS

[0004] The mould opening structure of the flip plastic mould provided by the utility model solves the problems of reduced mould strength and demolding difficulty in the mould opening process of the existing flip plastic mould.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A mould opening structure of a flip plastic mould, comprising a bottom plate, the top of the bottom plate is provided with a mould plate, the two sides of the mould plate are provided with mounting grooves, the mounting grooves are internally provided with an ejection mechanism, the two ends of the side edge of the bottom plate are provided with positioning rods, the outer side of the positioning rods below the bottom plate is provided with square irons, the middle of the square irons at the two ends is provided with first pressing plates and second pressing plates, the bottom of the square iron is provided with a hot runner plate, the side edge of the hot runner plate is provided with an exhaust groove, the side surface of the hot runner plate and the second pressing plate is provided with a connecting mechanism, and the side surface of the hot runner plate is provided with through holes matched with the positioning rods in sliding connection.

[0007] Preferably, the ejection mechanism comprises an oil cylinder machine, a connecting rod, a ejector pin plate, a groove, a bolt, a fixed plate and a placing groove, and the bottom plate is provided with a groove, the side edge of the groove is provided with a fixed plate through a bolt, and the oil cylinder machine is installed above the fixed plate and inside the installation groove.

[0008] Preferably, the bottom of the oil cylinder machine is provided with a connecting rod, the connecting rod is located inside the side edge of the first pressing plate, the side edge of the second pressing plate is provided with a placing groove, and the placing groove is provided with an ejector pin plate inside.

[0009] Preferably, a plurality of groove holes are arranged inside the first pressing plate and the second pressing plate, and a plurality of positioning pins are arranged inside the groove holes.

[0010] Preferably, the connecting mechanism comprises a connecting groove, a connecting block and a threaded hole, and the hot runner plate and the second pressing plate are provided with matching connecting grooves on both sides, the connecting grooves are provided with connecting blocks inside, and the connecting grooves and the connecting blocks are provided with matching threaded holes inside.

[0011] Preferably, the top of the positioning rod is provided with a threaded rod outside, and the mold plate is provided with a cavity inside.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The mold opening structure of the inverted plastic mold, the oil cylinder machine is installed above the fixed plate and inside the installation groove, the bottom of the oil cylinder machine is provided with a connecting rod, the bottom of the connecting rod is provided with an ejector pin plate inside the placing groove of the second pressing plate, which can ensure that the mold plate is not damaged during demolding, at the same time, the ejector pin has flexibility and can accurately eject specific parts of the product, and the system reasonably distributes the ejection force to prevent the product from being deformed or damaged during demolding, thereby improving the overall performance and use effect of the inverted plastic mold.

[0014] 2. Through the pushing action of the oil cylinder machine, the connecting rod and the ejector pin plate, the inverted plastic mold reasonably distributes the ejection force during mold opening, adjusts the structure, thereby improving the mold strength and durability, avoiding mold deformation and cracking caused by stress concentration, and secondly, selecting a high-strength and wear-resistant mold material to improve the carrying capacity and durability of the mold.

[0015] 3. The bottom plate, mold plate, square iron and hot runner plate are internally provided with positioning rods, so that the positioning precision is higher when the mold is closed, the overall performance and appearance effect of the inverted plastic mold are improved, meanwhile, the appearance of the inverted plastic mold is free of residues during mold opening, the product does not need post-processing, the post-mold part only needs to meet the requirements of the glue position surface, and the product is easier to be grabbed by a robot and other automatic equipment on the movable mold, which is beneficial to realize full automation of injection molding production, improves production efficiency, ensures product quality and further improves the automation level. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model.

[0017] Figure 2 It is another perspective structure schematic view of the utility model.

[0018] Figure 3 It is an explosion structure schematic view of the utility model.

[0019] Figure 4 It is a structure schematic view of the ejection mechanism of the utility model.

[0020] Reference signs in the drawing: 1, bottom plate; 2, mold plate; 3, mounting groove; 4, positioning rod; 5, square iron; 6, first pressing plate; 7, second pressing plate; 8, hot runner plate; 9, exhaust groove; 10, through hole; 11, oil cylinder machine; 12, connecting rod; 13, ejector plate; 14, groove; 15, bolt; 16, fixed plate; 17, placing groove; 18, slot hole; 19, positioning pin; 20, connecting groove; 21, connecting block; 22, threaded hole; 23, threaded rod; 24, cavity. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] REFERENCE Figures 1-4The utility model provides a technical scheme: a structure of opening mould of upside down plastic mould, including bottom plate 1, bottom plate 1 top is provided with mould plate 2, and mould plate 2 both sides are provided with mounting groove 3, and mounting groove 3 inside is provided with ejection mechanism, and bottom plate 1 side edge both ends are provided with positioning rod 4, bottom plate 1 below is located positioning rod 4 outside and is provided with square iron 5, and two end square iron 5 middle part is provided with first pressing plate 6 and second pressing plate 7, and square iron 5 bottom is provided with hot runner plate 8, and hot runner plate 8 side is provided with exhaust groove 9, solve the phenomenon of gas, help to improve the overall performance and product quality of upside down plastic mould, and hot runner plate 8 and second pressing plate 7 side are provided with connecting mechanism, and hot runner plate 8 side is provided with the through -hole 10 of matching with positioning rod 4 and sliding connection, ensure that when closing, positioning accuracy is higher, improve the overall performance and appearance effect of upside down plastic mould.

[0023] Referring to Figure 2 , Figure 4 , the ejection mechanism includes a cylinder machine 11, a connecting rod 12, a ejector pin plate 13, a groove 14, a bolt 15, a fixed plate 16, and a placing groove 17. The bottom plate 1 side is provided with the groove 14, and the groove 14 side is provided with the fixed plate 16 through the bolt 15. The cylinder machine 11 is installed inside the fixed plate 16 and located inside the mounting groove 3. The bottom of the cylinder machine 11 is provided with the connecting rod 12, and the connecting rod 12 is located inside the first pressing plate 6 side. The second pressing plate 7 side middle part is provided with the placing groove 17, and the placing groove 17 inside is provided with the ejector pin plate 13. The connecting rod 12 is connected to the ejector pin plate 13 inside the placing groove 17 to form the ejection mechanism. It ensures that the mould plate 2 is not damaged during demolding. At the same time, the cylinder machine 11 reasonably distributes the distribution of ejection force to prevent the product from being deformed or damaged during demolding, and improves the overall performance and use effect of the upside down plastic mould.

[0024] Referring to Figure 1 , Figure 3 , a plurality of groove holes 18 are arranged inside the first pressing plate 6 and the second pressing plate 7, and a plurality of positioning pins 19 are arranged inside the groove holes 18. The connecting mechanism includes a connecting groove 20, a connecting block 21, and a threaded hole 22. The hot runner plate 8 and the second pressing plate 7 are provided with matching connecting grooves 20 on both sides. The connecting groove 20 is provided with the connecting block 21 inside. The connecting groove 20 and the connecting block 21 are provided with matching threaded holes 22 inside. It ensures the closing precision and the overall stability. The positioning rod 4 top outside is provided with a threaded rod 23, and the mould plate 2 inside is provided with a cavity 24.

[0025] Specifically, during use of the structure of opening mould of upside down plastic mould, first, the mould parts are cleaned and inspected to ensure that the part quality meets the assembly standard. When assembling the core and the cavity 24, attention should be paid to the adjustment of the relative position and gap to ensure the closing precision. For the ejection mechanism, the cooperation between the ejection elements and the core and the cavity 24 should be checked to ensure smooth ejection without interference.

[0026] In operation, after the product is injected, the core is opened, the product is left in the cavity 24 inside the mold plate 2, the oil cylinder machine 11 moves to make the connecting rod 12 move to the oil cylinder direction, drives the bottom plate 1, realizes the product to separate from the mold, then the oil cylinder machine 11 moves to the opposite direction, makes the bottom plate 1 reset, starts the next cycle, the side of the hot runner plate 8 is provided with the exhaust groove 9, solves the phenomenon of trapped gas, helps to improve the overall performance and product quality of the inverted plastic mold, at the same time, the positioning rod 4 and the positioning pin 19 ensure the precision and accuracy of the overall injection mold opening.

[0027] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A mold opening structure for an inverted plastic mold, comprising a base plate (1), characterized in that, The bottom plate (1) top is provided with mold plate (2), and the both sides of the mold plate (2) are provided with mounting groove (3), the inside of the mounting groove (3) is provided with ejection mechanism, and the both ends of the side edge of the bottom plate (1) are provided with positioning rod (4), the bottom of the bottom plate (1) is provided with square iron (5) outside the positioning rod (4), and the middle of the square iron (5) is provided with first pressing plate (6) and second pressing plate (7) at both ends, the bottom of the square iron (5) is provided with hot runner plate (8), and the side edge of the hot runner plate (8) is provided with exhaust groove (9), the side of the hot runner plate (8) and the second pressing plate (7) is provided with connecting mechanism, and the side of the hot runner plate (8) is provided with through hole (10) matched with the positioning rod (4) in sliding connection.

2. The mold opening structure of claim 1, wherein, The ejection mechanism includes oil cylinder machine (11), connecting rod (12), ejector pin plate (13), groove (14), bolt (15), fixed plate (16), placing groove (17), and the side of the bottom plate (1) is provided with groove (14), the side edge of the groove (14) is provided with fixed plate (16) through bolt (15), and the oil cylinder machine (11) is installed above the fixed plate (16) inside the mounting groove (3).

3. The mold opening structure of claim 2, wherein, The bottom of the oil cylinder machine (11) is provided with connecting rod (12), and the connecting rod (12) is located inside the side edge of the first pressing plate (6), the middle of the side edge of the second pressing plate (7) is provided with placing groove (17), and the inside of the placing groove (17) is provided with ejector pin plate (13), the connecting rod (12) is connected to the ejector pin plate (13) inside the placing groove (17) to constitute the ejection mechanism.

4. The mold opening structure of claim 1, wherein, The inside of the first pressing plate (6) and the second pressing plate (7) is provided with a plurality of groove holes (18), and the inside of the groove hole (18) is provided with a plurality of positioning pins (19).

5. The mold opening structure of claim 1, wherein, The connecting mechanism includes connecting groove (20), connecting block (21), screw hole (22), and the both sides of the hot runner plate (8) and the second pressing plate (7) are provided with matching connecting groove (20), the inside of the connecting groove (20) is provided with connecting block (21), and the inside of the connecting groove (20) and the connecting block (21) is provided with matching screw hole (22).

6. The mold opening structure of claim 1, wherein, The top outside of the positioning rod (4) is provided with threaded rod (23), and the inside of the mold plate (2) is provided with cavity (24).

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