Large heat glue way structure for improving product burr

Abstract

The application relates to the technical field of hot runner molding, in particular to a large-piece hot glue runner structure for improving product burrs, which comprises an upper fixed plate, a hot runner system, a positioning ring arranged in the upper fixed plate, a fixing device arranged on the positioning ring, a main runner nozzle arranged below the positioning ring, a positioning block arranged at one side of the main runner nozzle, the hot runner system further comprising a shunt plate, a plurality of cushion blocks arranged between the shunt plate and the upper fixed plate, a hot glue runner bearing plate locked by a fixing screw arranged at one side of the shunt plate, and a positioning pin arranged at the other side of the shunt plate, the main runner nozzle is connected with the hot glue runner through a runner, and cushion blocks are arranged at two sides of the hot glue runner. The scheme is reasonable in structure and technology, and through repeated tests, the problem of product burrs of the large-piece hot glue runner mold is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to hot runner mold technical field, specifically to a large piece of hot glue way structure for improving product burr.

BACKGROUND

[0002] In today's industrialized society, the application of mold is very wide, among them, the use of hot glue way mold is more and more, when using hot glue way mold, the hot glue way mold of the flow distribution plate is the center part, it will be transmitted to the nozzle of the main runner nozzle through the flow channel to each injection point nozzle, therefore, the most basic requirement of hot glue way mold for flow distribution plate is that it has enough mechanical strength, can withstand the pressure of the plastic melt in the flow channel, the thickness of the flow distribution plate can not be too thin or too thick, too thin will affect its strength, too thick will make the hot glue way mold heat, use too much energy, and slow heating speed. Generally, the design of most flow distribution plates is relatively thin, therefore, the mechanical strength becomes particularly important, especially for large hot glue way mold, in order to avoid power waste, generally thin flow distribution plate is used, and because of the structure limitation of large hot glue way mold, the flow channel plate is opened in large area, which leads to insufficient pressure bearing, through trial molding, it is found that because the injection pressure of large hot glue way mold is limited, the product formed by injection molding will have burr problem, which is not easy to solve.

[0003] Therefore, it is necessary to invent a large hot glue way mold capable of bearing injection pressure to ensure that the product of the hot glue way mold will not have burr when the mold is injection molded.

SUMMARY

[0004] Therefore, the purpose of the present application is to provide a large hot glue way mold for improving product burr, which is verified by repeated test results, and is beneficial to improve product burr and improve product yield.

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

[0006] A large hot glue way structure for improving product burr, comprising an upper fixed plate and a hot runner system, characterized in that: the upper fixed plate is provided with a positioning ring, the positioning ring is provided with a fixing device to assist the positioning of the positioning ring, a main runner nozzle is arranged below the positioning ring, the hot runner system is provided with a flow distribution plate, a hot glue way bearing plate is arranged below the flow distribution plate, a first pad is arranged between the flow distribution plate and the upper fixed plate, a second pad is arranged below the hot glue way of the flow distribution plate, the first pad and the second pad are used to increase the pressure bearing area and increase the wear resistance, and a center support block is arranged below the center of the flow distribution plate.

[0007] The main flow channel nozzle is connected with the hot glue channel through a hot glue channel injection flow channel, and a positioning block is arranged at one side of the main flow channel nozzle.

[0008] The fixing device is a positioning ring part with an internal hollow.

[0009] The first cushion block is a meson cushion block processed through heat treatment, and is mainly used between the shunt plate and the upper fixed plate and between the shunt plate and the hot glue channel pressure bearing plate below.

[0010] The second cushion block is a mouth heat cushion block processed through heat treatment, and is mainly used on the hot glue channel to increase the pressure bearing area of the hot glue channel.

[0011] One side of the shunt plate is provided with a fixing screw to lock the shunt plate on the hot glue channel bearing plate.

[0012] One side of the shunt plate is further provided with a positioning pin.

[0013] The center support block is a heat insulation material.

[0014] Compared with the prior art, the present application increases the pressure bearing area of each flow channel plate in the hot flow channel mold by improving and increasing the cushion block, improves the mold pressure bearing capacity, makes the glue injection sufficient, and improves the product burr.

DRAWINGS

[0015] Figure 1 is a structural side view of the present application.

[0016] Figure 2 is an enlarged view of the second cushion block of the present application.

[0017] Figure 3 is an enlarged view of the first cushion block of the present application.

[0018] Figure 4 is a planar top view of the structure of the present application.

DETAILED DESCRIPTION

[0019] In order to further understand the purpose, technical effects and technical means of the present application, the following will be described in detail in conjunction with the drawings. As shown in Figure 1 , Figure 2 , Figure 3 The hot glue channel mold for improving the burr of large products of the present application comprises the following parts: an upper fixed plate (1), a hot flow channel system (2);

[0020] The upper fixing plate (1) is made of heat insulation material, which is also called heat insulation plate. Its main function is to prevent the heat of the molten plastic fluid from flowing to the injection molding machine when the injection molding machine is working. In addition, the upper fixing plate also has the function of fixing the overall mold structure. The upper fixing plate (1) is also provided with a positioning ring (12), which is a metal ring. The positioning ring (12) is mainly used in hot runner molds to match the molding machine (not shown in the figure) and the nozzle sleeve (not shown in the figure) in the pouring machine. The hollow (122) in the center is used to let the molding machine (not shown in the figure) shoot plastic into the flow channel. Therefore, the positioning ring (12) has the characteristics of high temperature resistance. The nozzle sleeve is also called the machine nozzle. Two fixing devices (13) are respectively arranged on both sides of the center of the positioning ring (12) inside the positioning ring (12). The fixing device (13) is a hollow positioning ring (12) part. The two positioning devices (13) are mainly used to assist the positioning of the positioning ring (12). In addition, a main flow channel nozzle (14) is arranged below the center of the positioning ring (12). A positioning block (15) is arranged on one side of the main flow channel nozzle (14). The positioning block (15) is used to fix the position of the main flow channel nozzle (14) to ensure that it does not deviate when shooting plastic. The upper fixing plate (1) is provided below the hot runner system (2).

[0021] The hot runner system (2) comprises a flow distribution plate (22) which is mainly used for distributing the molten material in the main runner nozzle (14) to the hot glue runner injection channel (24), and a plurality of first pads (23) are arranged between the flow distribution plate (22) and the upper fixed plate (1), and the optimal number is generally three, the first pad (23) is a meson pad customized from the manufacturer, the material is SK-3, and the wear resistance of the material is increased in the heat treatment process to ensure that other parts are not damaged during use, and the shape is a metal ring shape, which is mainly placed between the flow distribution plate (22) and the upper fixed plate (1) and the flow distribution plate (22) and the hot glue runner support plate (29) to increase the pressure bearing area of the flow distribution plate (22) in the center of the hot runner injection channel (24) of the hot runner system (2). The center of the hot runner injection channel (24) is connected with the upper main runner nozzle (14), and after the plastic is injected by the molding machine (not shown in the figure), the plastic is sent to the injection channel (24) by the main runner nozzle (14), and the injection channel (24) is divided into two sides, and each side of the flow channel is provided with a hot glue runner (25), and each side of the hot glue runner (25) is provided with a second pad (26), the second pad (26) is a nozzle heat pad made of SK-3 material after heat treatment, and the wear resistance is increased, which is mainly placed between the hot glue runner (25) and the hot glue runner support plate (29), and the main shape is a cuboid shape, and a groove (262) is arranged on the surface of part of the second pad (26) to facilitate the matching of the hot glue runner (25). In addition, a supporting block (27) is arranged below the flow distribution plate (22) to support the flow distribution plate (22), and the supporting block (27) is located at the lower center position of the flow distribution plate (22), and a fixed screw (28) is arranged on one side of the flow distribution plate (22) to lock the flow distribution plate (22) on the hot glue runner support plate (29), and the hot glue runner support plate (29) is located below the flow distribution plate (22), and the first pad (23) is arranged between the two, and a positioning pin (21) is arranged on the other side of the flow distribution plate (22) to fix the flow distribution plate.

[0022] In addition, the hot glue runner mold of the present application is also provided with a power plug (3), and the second pad (26) and the first pad (23) are used for open hot glue runner large molds, and when the mold is a needle valve type hot glue runner mold, a cylinder pad (not shown in the figure) is used.

[0023] Through the above implementation, it is more reasonable, and in the production line, the flow channel plate of the large hot glue runner mold is improved due to the problem of structure, and the pressure bearing area is increased, which has been used for multiple models and multiple molds by front-line personnel, and the effect is remarkable.

[0024] The technical principles of the present application are described above in combination with specific embodiments, and these descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without any creative effort, and these embodiments will all fall within the protection scope of the present application.

Claims

1. A hot-runner structure for improving the flash of a product, comprising an upper fixed plate and a hot runner system, characterized in that: The upper fixed plate is provided with a positioning ring, the positioning ring is provided with a fixing device to assist positioning of the positioning ring, a main runner nozzle is arranged below the positioning ring, the hot runner system is provided with a distribution plate, a hot glue channel bearing plate is arranged below the distribution plate, first gaskets are arranged between the distribution plate and the upper fixed plate and between the distribution plate and the hot glue channel bearing plate, second gaskets are arranged on both sides of the hot glue channel below the distribution plate, the first gaskets and the second gaskets are used to increase the bearing area and increase the wear resistance, and a center support block is further fixedly arranged below the center of the distribution plate. The first gaskets are meson gaskets processed through heat treatment, the second gaskets are nozzle hot gaskets processed through heat treatment, and are mainly used on the hot glue channel to increase the bearing area of the hot glue channel, the second gaskets are mainly in the shape of a cuboid, and the surfaces of some second gaskets are provided with grooves to match the hot glue channel.

2. A bulk hot glue joint structure for improving the product's edge, according to claim 1, characterized in that: The main runner nozzle is connected with the hot glue channel through a hot glue channel injection runner, and a positioning block is further arranged on one side of the main runner nozzle.

3. A bulk hot glue joint structure for improving the product's edge, according to claim 1, characterized in that: The fixing device is a positioning ring part with an internal hollow.

4. A bulk hot glue joint structure for improving the product's edge, according to claim 1, characterized in that: A fixing screw is arranged on one side of the distribution plate to lock the distribution plate on the hot glue channel bearing plate.

5. A bulk hot glue joint structure for improving the product's edge, according to claim 1, characterized in that: A positioning pin is further arranged on one side of the distribution plate.

6. A bulk hot glue joint structure for improving the appearance of a product edge according to claim 1, wherein: The center support block is a heat insulation material.

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