Injection mechanism of injection molding machine for processing ultra-large long and wide lamellar plastic products

Abstract

The utility model relates to the technical field of injection molding machines, in particular to an injection mechanism of an injection molding machine for processing and molding oversized long and wide sheet-shaped plastic products, and discloses an injection mechanism of an injection molding machine for processing and molding oversized long and wide sheet-shaped plastic products. The injection molding machine mainly comprises a machine body, a feeding hopper, an injection molding barrel, a mold mounting position, a mechanical arm mold opening position and an upper mold injection position, the mold mounting position and the mechanical arm mold opening position are arranged on the two sides of the machine body respectively, the upper mold injection position is located on the portion, between the mold mounting position and the mechanical arm mold opening position, of the machine body, and the injection molding barrel with a feeding screw is located above the upper mold injection position. A discharging opening of the feeding hopper is connected with a feeding opening of the injection molding barrel; a plurality of material distributing openings are formed in a discharging opening of the injection molding barrel, the material distributing openings are connected through material distributing pipes, and outlets of the material distributing openings correspond to upper mold injection holes formed in the upper mold injection positions; the upper mold injection holes of the upper mold injection position are uniformly distributed in the upper mold injection position; preferably, the number of the upper mold injection holes in the upper mold injection position is three.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine technical field especially is a kind of injection mechanism for processing and shaping super long wide flaky plastic product injection molding machine. BACKGROUND

[0002] Plastic products are widely used in various industries due to their bright colors, easy processing, durability and mass production.

[0003] Plastic products are generally preheated to a molten state and then extruded into the cavity of the molding mold on the injection molding machine with an injection screw. After cooling, the mold is opened and processed. When processing larger area plastic products, in order to extrude the molten plastic material into the cavity of the molding mold on the injection molding machine, the extrusion force of the injection molding machine is generally increased, so that the molten plastic material extruded into the cavity of the molding mold reaches every edge and corner, so that the product obtained after processing and shaping will not produce defective products.

[0004] However, when processing super long wide flaky plastic products such as automobile floor mats, defects such as "blown edge" and "missing corner" may occur. The reason is that the molten plastic material has poor flowability, and the cavity between the upper and lower molds of the molding mold is very narrow, making it difficult for the molten plastic material with poor flowability to flow in the cavity. As a result, the molten plastic material near the injection port is extruded out of the edge of the upper and lower molds, resulting in the "blown edge" phenomenon, while the molten plastic material at the far end of the cavity is still difficult to extrude, resulting in "missing corner" defective products. Therefore, manufacturers have to use machines with larger extrusion force to solve the problem, which further increases the production cost of the product. SUMMARY

[0005] The utility model aims at overcoming the defects of prior art, and provides an injection mechanism for processing super long wide flaky plastic product injection molding machine.

[0006] The utility model adopts the following technical solutions:

[0007] The injection mechanism of an injection molding machine for processing extra-large, long, wide, and thin sheet plastic products mainly includes a machine body, a feed hopper, an injection cylinder, a mold mounting position, a robot opening position, and an upper mold injection position. The mold mounting position and the robot opening position are respectively located on both sides of the machine body. The upper mold injection position is located on the machine body between the mold mounting position and the robot opening position. The injection cylinder with a feeding screw is located above the upper mold injection position. The discharge port of the feed hopper is connected to the inlet of the injection cylinder. The discharge port of the injection cylinder has multiple distribution ports, each of which is connected by a distribution pipe, and the outlet of each distribution port corresponds to the upper mold injection hole located at the upper mold injection position.

[0008] The upper mold injection holes of the upper mold injection position are evenly distributed on the upper mold injection position;

[0009] Preferably, the upper mold injection position has three upper mold injection holes.

[0010] This invention adds upper mold injection holes to the original upper mold injection position, and the upper mold injection holes are evenly distributed on the upper mold injection position, so that the molten plastic material injected through the upper mold injection holes can be easily injected into the edges and corners of the mold cavity, fundamentally eliminating the phenomena of "edge bursting" and "corner missing". Attached Figure Description

[0011] Appendix Fig. 1 This is a perspective view of the present utility model;

[0012] Appendix Fig. 2 This is a top view of the present invention;

[0013] Appendix Fig. 3 For the appendix Fig. 1 Enlarged view of point A;

[0014] Appendix Fig. 4 For the appendix Fig. 2 Enlarged view of section B. Detailed Implementation

[0015] See attached Figs. 1-4 The injection mechanism of an injection molding machine for processing ultra-large, long, wide, and thin sheet plastic products mainly includes a machine body 1, a feed hopper 2, an injection cylinder 3, a mold mounting position 4, a robot opening position 5, and an upper mold injection position 6. The mold mounting position 4 and the robot opening position 5 are respectively located on both sides of the machine body 1. The upper mold injection position 6 is located on the machine body 1 between the mold mounting position 4 and the robot opening position 5. The injection cylinder 3 with a feeding screw is located above the upper mold injection position 6. The outlet of the feed hopper 2 is connected to the inlet of the injection cylinder 3. The outlet of the injection cylinder 3 is provided with multiple distribution ports 31. Each distribution port 31 is connected through a distribution pipe 32, and the outlet of each distribution port 31 corresponds to the upper mold injection hole provided in the upper mold injection position 6.

[0016] The upper mold injection holes of the upper mold injection position 6 are uniformly distributed on the upper mold injection position 6.

[0017] The upper mold injection holes of the upper mold injection position 6 are preferably three.

[0018] When the utility model is applied, the operator puts the mold of the product to be processed into the mold installation position 4 on the machine body 1 and moves it to the lower side of the upper mold injection position 6, the plastic particles to be processed are poured into the feeding hopper 2, the feeding screw in the injection cylinder 3 extrudes the plastic material in the molten state into the discharge port of the injection cylinder 3, since the discharge port of the injection cylinder 3 is provided with a plurality of distribution ports 31 and each distribution port 31 is connected through a distribution pipe 32, the plastic material with poor flowability can quickly flow out at a plurality of points in the cavity of the forming mold and quickly flow to each area in the cavity, so that the purpose of rapid filling is achieved; after the upper and lower molds are cooled, they are moved to the mechanical hand mold opening position 5, the mold is opened through the mechanical hand, and the processed product is taken out.

[0019] When the utility model is used to process sheet-shaped plastic products, it is particularly suitable for processing rectangular products.

Claims

1. An injection mechanism for an injection molding machine that processes extra-large, long, wide, and thin sheet plastic products, mainly comprising a machine body, a feeding hopper, an injection barrel, a mold mounting position, a robot opening position, and an upper mold injection position. The mold mounting position and the robot opening position are respectively located on opposite sides of the machine body. The upper mold injection position is located on the machine body between the mold mounting position and the robot opening position. The injection barrel with a feeding screw is located above the upper mold injection position. The outlet of the feeding hopper is connected to the inlet of the injection barrel. Its characteristics are: The injection cylinder has multiple material distribution ports at its outlet. Each material distribution port is connected by a material distribution pipe, and the outlet of each material distribution port corresponds to the upper mold injection hole located at the upper mold injection position.

2. The injection mechanism of the injection molding machine for processing ultra-large, long, wide, and thin sheet-like plastic products according to claim 1, characterized in that: The upper mold injection holes of the upper mold injection position are evenly distributed on the upper mold injection position.

3. The injection mechanism of the injection molding machine for processing ultra-large, long, wide, and thin sheet-like plastic products according to claim 1, characterized in that: Preferably, the upper mold injection position has three upper mold injection holes.

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