Plastic reel mold

Abstract

The utility model discloses a plastic reel mould which comprises a mould core and a mould cavity, a core pulling assembly is arranged between the mould core and the mould cavity in a penetrating mode, and the core pulling assembly comprises a first core plate and a second core plate. According to the application, the four groups of guide columns are respectively inserted into the core plate I and the core plate II, are obliquely arranged and are all connected with the movable mold wall plate of the injection molding machine, the four groups of inclined guide columns can immediately pull out the core plate I and the core plate II leftwards and rightwards along the backward movement direction of the movable mold wall plate of the injection molding machine to be completely separated from a product, and after a core-pulling slide block is completely separated from the product, the core plate I and the core plate II are completely separated from the product. A product can be immediately ejected out through the ejector pin system, the mold opening time can be shortened through the four sets of guide columns attached to a movable mold wall plate of an injection molding machine, a traditional oil cylinder mode is replaced, the opening time of a core pulling assembly is shortened, meanwhile, the defects of oil leakage and the like caused by an oil cylinder are overcome, and due to the fact that the injection molding period is shortened, the production efficiency is improved. Therefore, the service life of the die can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic reel processing, in particular to a plastic reel mould. Background Art

[0002] A reel is a commonly used part, which is usually used to wind up the tape strip, thereby fixing the tape strip, and has guard plates on both sides. It can generally be called a reel part, such as a seat belt winding reel, an electronic component carrier reel, etc. In the prior art, some reels are made of high-hardness cardboard. In order to reduce the processing cost of the reel, many reels are made of plastic material by injection molding due to the low cost of plastic materials.

[0003] Chinese patent publication number CN105479689B, publication date 20180202, discloses a mold for carrier disk injection molding, including a mold frame, the mold frame including a core, a cavity and a side core pulling mechanism, a molding cavity is formed between the core, the cavity and the side core pulling mechanism, a first exhaust structure connected to the upper end face of the molding cavity is arranged in the core, a second exhaust structure connected to the lower end face of the molding cavity is arranged in the cavity, and a third exhaust structure connected to the side of the molding cavity is formed between the side core pulling mechanism and the core and / or the cavity.

[0004] Most of the existing plastic reel molds such as the above-mentioned ones adopt a side core pulling mechanism, but in the specific implementation process, most of them use a cylinder as a power source, that is, they all use a cylinder core pulling. The cylinder core pulling must wait until the rear mold wall plate of the injection molding machine is fully opened before the cylinder core pulling can be started, which prolongs the molding cycle. In addition, the use of cylinder core pulling is prone to oil leakage, which may cause accidents caused by slipping on the ground, and the life of the cylinder is not long. Therefore, it is urgent to propose a corresponding plastic reel mold to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a plastic reel mold in order to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plastic scroll mold comprises a core and a cavity, a core pulling assembly is arranged between the core and the cavity, the core pulling assembly comprises a core plate 1 and a core plate 2, the opposite surfaces of the core plate 1 and the core plate 2 are engaged with each other, and the inner surface walls of the arc-shaped ends of the core plate 1 and the core plate 2 are fixedly installed with fixed plates, and four groups of guide columns are respectively arranged inside the core plate 1 and the core plate 2, and the four groups of guide columns are all arranged at an angle.

[0008] Preferably, an annular water channel 1 and a vertical hole 1 are opened on the top of the core, and the annular water channel 1 is connected to the vertical hole 1. An annular water channel 2 and a vertical hole 2 are opened on the side of the core cavity away from the core, and the annular water channel 2 is connected to the vertical hole 2.

[0009] Preferably, a plurality of exhaust ports are provided at the bottom of the core cavity, and the plurality of exhaust ports are distributed in a ring shape.

[0010] Preferably, a protrusion is integrally formed at the horizontal end of the core plate one, and a side of the core plate two close to the core plate one is engaged with the protrusion.

[0011] Preferably, the core plate 1 and the core plate 2 are both provided with through holes, and the cross sections of the four groups of through holes are all parallelogram structures. The four groups of guide posts are respectively inserted into the core plate 1 and the core plate 2 through the four groups of through holes.

[0012] Preferably, four groups of grooves are provided on both sides of the horizontal end of the core, and the four groups of guide pillars are overlapped with the outer wall of the core through the four groups of grooves respectively.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. In the present application, four groups of guide posts are respectively inserted into the core plate 1 and the core plate 2, and the four groups of guide posts are arranged at an angle and are all connected to the mechanical mold wall plate of the injection molding machine. As the mechanical mold wall plate of the injection molding machine moves backward, the four groups of inclined guide posts can immediately pull the core plate 1 and the core plate 2 out to the left and right, and completely separate them from the product. After the core pulling slider is completely separated from the product, the product can be immediately ejected through the ejector system. The four groups of guide posts arranged in close contact with the mechanical mold wall plate of the injection molding machine can reduce the time to open the mold, replacing the traditional oil cylinder method, shortening the opening time of the core pulling assembly while avoiding the disadvantages such as oil leakage caused by the oil cylinder, and because the injection molding cycle is shortened, the service life of the mold can be extended.

[0015] 2. In the present application, annular water channel 1 and annular water channel 2 are respectively provided on the opposite surfaces of the core and the cavity, and vertical hole 1 and vertical hole 2 which are connected to annular water channel 1 and annular water channel 2 are synchronously provided, so that the cooling of the molten material can be completed more evenly and efficiently, and the time for the molten high-temperature material to be fixed into a product can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0017] Figure 2 A schematic diagram of the structure of a core pulling assembly provided according to an embodiment of the utility model is shown;

[0018] Figure 3A schematic diagram of the structure of a fixing plate provided according to an embodiment of the utility model is shown;

[0019] Figure 4 A schematic diagram of the core cavity structure provided according to an embodiment of the utility model is shown.

[0020] Legend:

[0021] 1. Core; 2. Core cavity; 3. Core pulling assembly; 301. Core plate one; 302. Core plate two; 4. Guide column; 5. Perforation; 6. Groove; 7. Annular water channel one; 8. Vertical hole one; 9. Fixed plate; 10. Annular water channel two; 11. Vertical hole two; 12. Exhaust port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A plastic reel mold, comprising a core 1 and a cavity 2, a core pulling assembly 3 is provided between the core 1 and the cavity 2, the core pulling assembly 3 comprises a core plate 1 301 and a core plate 2 302, the opposite surfaces of the core plate 1 301 and the core plate 2 302 are engaged with each other, and a fixing plate 9 is fixedly installed on the inner surface wall of the arc-shaped end of the core plate 1 301 and the core plate 2 302, four groups of guide pillars 4 are respectively provided inside the core plate 1 301 and the core plate 2 302, and the four groups of guide pillars 4 are all inclined;

[0025] Four groups of guide pillars 4 are respectively inserted into the core plate 1 301 and the core plate 2 302. The four groups of guide pillars 4 are inclined and connected to the mechanical mold wall panel of the injection molding machine. As the mechanical mold wall panel of the injection molding machine moves backward, the four groups of inclined guide pillars 4 can immediately pull the core plate 1 301 and the core plate 2 302 out to the left and right until the core plate 1 301 and the core plate 2 302 are completely separated from the product. The product can be immediately ejected through the ejector system. The four groups of guide pillars 4 set in conjunction with the mechanical mold wall panel of the injection molding machine can reduce the time for opening the mold, replacing the traditional oil cylinder method, shortening the opening time of the core pulling assembly 3 while avoiding the disadvantages of oil leakage caused by the oil cylinder. In addition, because the injection molding cycle is shortened, the service life of the mold can be extended.

[0026] Specifically, Figure 2 and Figure 4As shown, an annular water channel 1 7 and a vertical hole 1 8 are provided on the top of the core 1, and the annular water channel 1 7 and the vertical hole 1 8 are connected. An annular water channel 2 10 and a vertical hole 2 11 are provided on the side of the core cavity 2 away from the core 1, and the annular water channel 2 10 and the vertical hole 2 11 are connected. An annular water channel 1 7 and an annular water channel 2 10 are provided on the opposite sides of the core 1 and the cavity 2, respectively, and vertical holes 1 8 and 11 connected to the annular water channel 1 7 and the annular water channel 2 10 are synchronously provided, so that the cooling of the molten material can be completed more evenly and efficiently, and the time for the molten high-temperature material to be fixed into a product can be reduced.

[0027] Specifically, Figure 2 and Figure 3 As shown, multiple groups of exhaust ports 12 are provided at the bottom of the core cavity 2, and the multiple groups of exhaust ports 12 are distributed in a ring shape for adjusting the internal pressure of the mold. A protrusion is integrally formed at the horizontal end of the core plate 1 301, and the side of the core plate 2 302 close to the core plate 1 301 is engaged with the protrusion, thereby ensuring the stability of the cooperation between the core plate 1 301 and the core plate 2 302 and avoiding longitudinal misalignment between the two. Both the core plate 1 301 and the core plate 2 302 are provided with perforations 5, and the cross-sections of the four groups of perforations 5 are parallelogram structures. Four groups of guide pillars 4 are respectively inserted into the core plate 1 301 and the core plate 2 302 through the four groups of perforations 5, thereby ensuring the inclined state of the four groups of guide pillars 4, and four groups of grooves 6 are provided on both sides of the horizontal end of the core 1. The four groups of guide pillars 4 are overlapped with the outer wall of the core 1 through the four groups of grooves 6, respectively, to ensure the best initial position of the four groups of guide pillars 4 while avoiding movement conflict between the guide pillars 4 and the core 1.

[0028] Working principle: Four groups of guide pillars 4 are respectively inserted into the core plate 1 301 and the core plate 2 302. The four groups of guide pillars 4 are inclined and connected to the mechanical mold wall plate of the injection molding machine. As the mechanical mold wall plate of the injection molding machine moves backward, the four groups of inclined guide pillars 4 can immediately pull the core plate 1 301 and the core plate 2 302 out to the left and right until the core plate 1 301 and the core plate 2 302 are completely separated from the product. The product can be immediately ejected through the ejector system. By fitting the four groups of guide pillars 4 set on the mechanical mold wall plate of the injection molding machine, the time for opening the mold can be reduced. It replaces the traditional oil cylinder method, shortens the opening time of the core pulling component 3, avoids the disadvantages of oil leakage caused by the oil cylinder, and shortens the injection molding cycle, thereby extending the service life of the mold. An annular water channel 1 7 and an annular water channel 2 10 are respectively provided on the opposite surfaces of the core 1 and the cavity 2, and are synchronously equipped with a vertical hole 1 8 and a vertical hole 2 11 connected to the annular water channel 1 7 and the annular water channel 2 10, so that the cooling of the molten material can be completed more evenly and efficiently, and the time for the molten high-temperature material to be fixed into a product can be reduced.

[0029] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic reel mold, comprising a core (1) and a core cavity (2), characterized in that: A core pulling assembly (3) is provided between the core (1) and the core cavity (2), and the core pulling assembly (3) includes a core plate 1 (301) and a core plate 2 (302), the opposite surfaces of the core plate 1 (301) and the core plate 2 (302) are engaged with each other, and a fixing plate (9) is fixedly installed on the inner surface wall of the arc-shaped end of the core plate 1 (301) and the core plate 2 (302), and four groups of guide columns (4) are respectively provided inside the core plate 1 (301) and the core plate 2 (302), and the four groups of guide columns (4) are all inclined.

2. A plastic reel mold according to claim 1, characterized in that: The top of the core (1) is provided with an annular water channel (7) and a vertical hole (8), and the annular water channel (7) is connected to the vertical hole (8); the side of the core cavity (2) away from the core (1) is provided with an annular water channel (10) and a vertical hole (11), and the annular water channel (10) is connected to the vertical hole (11).

3. A plastic reel mold according to claim 2, characterized in that: The bottom of the core cavity (2) is provided with a plurality of groups of exhaust ports (12), and the plurality of groups of exhaust ports (12) are distributed in a ring shape.

4. A plastic reel mold according to claim 3, characterized in that: The horizontal end of the core plate 1 (301) is integrally formed with a protrusion, and the side of the core plate 2 (302) close to the core plate 1 (301) is engaged with the protrusion.

5. A plastic reel mold according to claim 4, characterized in that: The core plate 1 (301) and the core plate 2 (302) are both provided with through holes (5), and the cross-sections of the four groups of through holes (5) are all parallelogram structures. The four groups of guide pillars (4) are respectively inserted into the core plate 1 (301) and the core plate 2 (302) through the four groups of through holes (5).

6. A plastic reel mold according to claim 5, characterized in that: Four groups of grooves (6) are provided on both sides of the horizontal end of the core (1), and the four groups of guide pillars (4) are overlapped with the outer wall of the core (1) through the four groups of grooves (6).

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