Side water gap waste and product separation type injection mold

Abstract

The utility model relates to a side water gap waste and product separation type injection mold which comprises a front mold and a rear mold, a main runner and a front mold water gap groove are formed in the front mold, and the front mold water gap groove is communicated with the main runner; an ejector pin is arranged in the rear mold, an ejector pin position water gap groove is formed in the upper end of the ejector pin, a sliding groove is formed in the ejector pin position water gap groove in the rear mold, a sliding structure is connected to the sliding groove in a sliding mode, a sliding block water gap groove is formed in the sliding structure, and the sliding block water gap groove is communicated with the front mold water gap groove and the ejector pin position water gap groove. The sliding structure moves to drive the water gap waste of the sliding block water gap groove to move, and the front mold water gap groove, the ejector pin water gap groove and the sliding block water gap groove are staggered and deformed, so that the water gap waste is separated from a product in the mold; and after the product is ejected, the water gap waste cutting processing can be carried out without manual trimming and clamp-assisted punching.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a side gate waste and product separation injection mold. Background Art

[0002] The basic structure of the injection mold is divided into forming parts, pouring system, guide mechanism, ejection device, lateral parting and core pulling mechanism, cooling and heating system and exhaust system according to the use function. The function of the cooling and heating system is to adjust the process temperature of the mold, which is composed of a cooling system or a heating system. The cooling system refers to the water channel system opened in the mold, which is connected to the external water source and forms one or more water circuits in the mold as needed. Coolant is introduced into the water channel and circulated continuously to bring the excess heat in the mold out of the mold; the heating system is to introduce hot water into the water channel and circulate it continuously to heat the mold.

[0003] At present, there are four major types of water entry methods used in injection molds.

[0004] ① Direct water entry: The water inlet is directly set on the front mold surface of the product. After molding, the product needs to be processed to remove the waste from the water inlet, resulting in water outlet marks on the surface of the product, affecting the appearance quality of the product. This water entry method is only suitable for products with low appearance requirements.

[0005] ② Needle point water entry: The sprue is also opened directly on the front mold surface of the product. Although there is no need to remove the sprue after molding, there are traces of breaking (or needle valve sealing traces) on the sprue position on the surface of the product, which affects the appearance quality of the product. Therefore, it is only suitable for products that do not require high local appearance of the front mold surface.

[0006] ③ Submerged water: The water inlet is set at the periphery of the rear mold surface of the product. There is no need to remove the water outlet after molding, but the size of the glue inlet is relatively small, so it is not suitable for products with a large surface area and a large weight.

[0007] ④ Side water entry: It is a widely used water entry method with the advantages of easy molding, high appearance quality, small deformation and suitability for various types of products. However, the product needs to be processed to remove the waste material of the nozzle after ejection. The current coping methods include manual trimming and fixture-assisted punching, which have low production efficiency and high production costs. Utility Model Content

[0008] The purpose of the utility model is to design a side sprue waste and product separation injection mold, which can realize the separation of the sprue waste and the product in the mold, and the product does not need to be processed to cut off the sprue waste after ejection, so as to solve the problems raised by the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a side-gate waste and product separation injection mold is provided, comprising a front mold and a rear mold, the front mold is provided with a main flow channel and a front mold gate groove, the front mold gate groove is connected with the main flow channel; an ejector is provided in the rear mold, an ejector position gate groove is provided at the upper end of the ejector, a slide groove is provided in the rear mold on the ejector position gate groove, the slide groove is slidably connected to a sliding structure, a sliding block gate groove is provided on the sliding structure, and the sliding block gate groove is respectively connected with the front mold gate groove and the ejector position gate groove.

[0010] Furthermore, the sliding structure includes a sliding block and a driving connecting rod, the driving connecting rod is connected to the sliding block, and the sliding block is provided with the sliding block water outlet groove.

[0011] Furthermore, guide pressing blocks are respectively installed on both sides of the sliding block on the sliding groove.

[0012] Furthermore, the sliding block is convex, the guiding pressing block is inverted convex, and the guiding pressing block cooperates with the sliding block.

[0013] Furthermore, the guide pressing block is fixedly connected to the rear mold by screws.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model sets a sliding structure, opens the sliding block nozzle groove on the sliding structure, and moves the sliding structure, driving the nozzle waste of the sliding block nozzle groove to move, thereby achieving the purpose of separating the nozzle waste from the product; at the same time, under the sliding action of the sliding structure in the slide groove, the front mold nozzle groove, the ejector position nozzle groove and the sliding block nozzle groove are misaligned and deformed, and the nozzle waste of the front mold nozzle groove and the ejector position nozzle groove isolate the main channel and the ejector respectively, so that the main channel and the ejector are not affected in any way, and at the same time, the nozzle waste is kept as a whole with the sliding block nozzle groove, and can be ejected out of the mold by the ejector, so that the nozzle waste and the product in the mold are separated. This technical solution can maintain the original advantages of the side water entry method, and at the same time separate the nozzle waste from the product in the mold, and the product does not need to be manually trimmed and fixture-assisted punching to cut the nozzle waste after ejection, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 Sectional view at AA;

[0019] Figure 3 for Figure 1 Sectional view at the middle BB;

[0020] The names of the components marked in the figure are as follows:

[0021] 1. Front mold; 2. Back mold; 3. Main channel; 4. Front mold sprue groove; 5. Ejector; 6. Ejector position sprue groove; 7. Slide; 8. Sliding block sprue groove; 9. Sliding block; 10. Driving connecting rod; 11. Guide pressure block; 12. Screw. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] Example: Reference Figure 1-3A side-gate waste and product separation injection mold comprises a front mold 1 and a rear mold 2. The front mold 1 is provided with a main channel 3 and a front mold gate groove 4, and the front mold gate groove 4 is connected with the main channel 3; an ejector 5 is provided in the rear mold 2, and an ejector position gate groove 6 is provided at the upper end of the ejector 5; a slide groove 7 is provided on the ejector position gate groove 6 in the rear mold 2, and a sliding structure is slidably connected on the slide groove 7, and the sliding structure comprises a sliding block 9 and a driving connecting rod 10, and the driving connecting rod 10 is connected to the sliding block 9, and a sliding block gate groove 8 is provided on the sliding block 9. Guide pressing blocks 11 are respectively installed on both sides of the sliding block 9 on the slide groove 7, the sliding block 9 is convex, and the guide pressing block 11 is inverted convex, the guide pressing block 11 cooperates with the sliding block 9, and the guide pressing block 11 is fixedly connected to the rear mold 2 by screws 12, and the sliding block 9 slides stably on the slide groove 7 under the action of the guide pressing block 11. The sliding block water inlet groove 8 is connected with the front mold water inlet groove 4 and the ejector position water inlet groove 6 respectively. The utility model opens the sliding block water inlet groove 9 on the sliding block 9, and the sliding block 9 moves on the slide groove 7 under the power of the driving connecting rod 10, and the water inlet waste of the sliding block water inlet groove 9 is also moved accordingly, so as to achieve the purpose of separating the water inlet waste from the product. Then, under the sliding action of the sliding structure in the slide groove 7, the front mold water inlet groove 4, the ejector position water inlet groove 6 and the sliding block water inlet groove 9 are misaligned and deformed, and the water inlet waste of the front mold water inlet groove 4 and the water inlet waste of the ejector position water inlet groove 6 isolate the main channel 3 and the ejector 5 respectively, so that the main channel 3 and the ejector 5 are not affected in any way, and at the same time, they are kept as a whole with the water inlet waste of the sliding block water inlet groove 9, and can be ejected out of the mold by the ejector 5, so that the water inlet waste is separated from the product in the mold. Finally, after the cooling of the sliding block 9 is completed, when the product is ejected from the sliding block 9 area, the sliding block 9 will first detach from the mold. At this time, the mold is in an internal suspended state and the product is ready to be ejected. When the mold is opened, the sliding block 9 will slide out first without affecting the product itself. The utility model can maintain the original advantages of the side-entry water entry method, while separating the sprue waste from the product in the mold. After the product is ejected, there is no need for manual trimming and fixture-assisted punching to remove the sprue waste. The number of product processing steps is reduced, the corresponding processing cost is reduced, the processing defect rate is reduced, and the processing chain time is shortened. At the same time, it has obvious advantages in setting up one person and multiple machines for fully automatic production.

[0024] The working principle of the utility model is as follows: before opening the mold, the sliding block 9 moves on the slide groove 7 under the power of the driving connecting rod 10, and the nozzle waste material of the sliding block nozzle groove 9 is also moved accordingly. At the same time, the front mold nozzle groove 4, the ejector nozzle groove 6 and the sliding block nozzle groove 9 are misaligned and deformed, and can be ejected out of the mold by the ejector 5, so that the nozzle waste material and the product in the mold are separated. This is how it works.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A side-gate waste and product separation injection mold, comprising a front mold (1) and a rear mold (2), characterized in that: The front mold (1) is provided with a main flow channel (3) and a front mold water inlet groove (4), and the front mold water inlet groove (4) is connected to the main flow channel (3); the rear mold (2) is provided with an ejector pin (5), and the upper end of the ejector pin (5) is provided with an ejector position water inlet groove (6); the rear mold (2) is provided with a slide groove (7) located on the ejector position water inlet groove (6), and the slide groove (7) is slidably connected with a sliding structure, and the sliding structure is provided with a sliding block water inlet groove (8), and the sliding block water inlet groove (8) is respectively connected to the front mold water inlet groove (4) and the ejector position water inlet groove (6).

2. The side gate waste and product separation injection mold according to claim 1, characterized in that: The sliding structure comprises a sliding block (9) and a driving connecting rod (10), wherein the driving connecting rod (10) is connected to the sliding block (9), and the sliding block water inlet groove (8) is provided on the sliding block (9).

3. The side outlet waste and product separation injection mold according to claim 2 is characterized in that: Guide pressing blocks (11) are respectively installed on the sliding groove (7) and on both sides of the sliding block (9).

4. The side gate waste and product separation injection mold according to claim 3 is characterized in that: The sliding block (9) is convex, the guiding pressing block (11) is inverted convex, and the guiding pressing block (11) cooperates with the sliding block (9).

5. The side gate waste and product separation injection mold according to claim 3, characterized in that: The guide pressing block (11) is fixedly connected to the rear mold (2) via screws (12).

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