Paste resin feed injection device

Abstract

The utility model discloses a paste resin feed injection device belongs to the technical field of feed device, including the mounting panel, the mounting panel end installs the magnetic coupler, the magnetic coupler surface is connected with the stirring motor of installing the other side of mounting panel through the belt and rotates each other, the magnetic coupler end installs the stirring plasticizing screw rod, and the stirring plasticizing screw rod one side installs the feeding plunger cylinder, the feeding plunger cylinder end installs the feeding oil cylinder, when the material reaches the screw rod front end and enters the feeding port of plunger cylinder, thereby completes the plasticization of material, thereby avoids the deposition problem of raw material in the plunger cylinder, and simultaneously avoids the problem that the poor plasticization of rear material is caused by the short heating time.

Description

Technical Field

[0001] This utility model belongs to the field of protective fence technology, and in particular relates to a resin feeding and injection device. Background Technology

[0002] Current paste resin injection molding machines mainly consist of a stirring screw assembly and a plunger assembly. This device has a simple structure; the paste resin raw material enters the screw's feed inlet, is stirred and conveyed by the screw, and then fed into the plunger assembly. Metering stops when the metering device reaches the set value. During injection, the injection cylinder pushes the piston inside the metering device, sending the material from the plunger cylinder into the closed mold cavity for cooling and molding. This structure has the following drawbacks in actual production: 1. It cannot solve the problem of raw material sedimentation in the plunger cylinder, resulting in uneven flake inclusions in the injection molded product, leading to unstable product quality. 2. When a large injection volume is required, the raw material in the plunger cylinder enters the mold after passing through the screw; due to the short heating time, the material in the later stages suffers from poor plasticization. 3. The plunger structure's feeding is at the front end, causing resin residue, resulting in long color change times and wasted cleaning resin. Therefore, we propose a paste resin feeding injection molding device. Utility Model Content

[0003] This utility model provides a paste resin feeding injection device, which adds a feeding plunger cylinder to the traditional feed inlet, and completes the storage displacement measurement by changing the value of the displacement sensor connected to the plunger rod to the set measurement value.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a paste resin feeding injection device, comprising a mounting plate, a magnetic coupler mounted at the end of the mounting plate, the surface of the magnetic coupler being rotatably connected to a stirring motor mounted on the other side of the mounting plate via a belt, a stirring and plasticizing screw mounted at the end of the magnetic coupler, a feeding plunger cylinder mounted on one side of the stirring and plasticizing screw, a feeding cylinder mounted at the end of the feeding plunger cylinder, a feeding port mounted on the side of the feeding plunger cylinder away from the feeding cylinder, a sealing ring mounted at the output end of the stirring and plasticizing screw, and an injection cylinder and a storage bin mounted on both sides of the sealing ring respectively, the storage bin being provided with a discharge port.

[0005] Furthermore, a discharge sealing rod is installed at the end of the discharge port.

[0006] Furthermore, a feed sealing rod is installed on the side of the feed plunger cylinder near the feed inlet.

[0007] The beneficial effects of this utility model are:

[0008] This resin feeding injection device utilizes the thrust primarily from the feed piston to propel the material within the screw groove, gradually plasticizing it. Once the material reaches the screw tip, it enters the feed inlet of the plunger cylinder, thus completing the plasticization process. This avoids the problem of raw material sedimentation within the plunger cylinder and prevents poor plasticization of the subsequent material due to insufficient heating time. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0010] Figure 2 This is a top view of the structure of this utility model;

[0011] Figure 3 This is a side view of the structure of this utility model;

[0012] Figure 4 This is a frontal cross-sectional view of the present invention.

[0013] In the picture:

[0014] 1. Mounting plate; 2. Mixing motor; 3. Belt; 4. Magnetic coupler; 5. Feed inlet; 6. Mixing and plasticizing screw; 7. Feeding plunger cylinder; 8. Feeding cylinder; 9. Storage silo; 10. Injection cylinder; 11. Sealing ring; 12. Discharge sealing rod; 13. Discharge port; 14. Feeding sealing rod. Detailed Implementation

[0015] To further understand the utility model's content, features, and effects, the following embodiments are provided, along with detailed descriptions in conjunction with the accompanying drawings.

[0016] Example:

[0017] Please see Figure 1 - Figure 4 A paste resin feeding injection device includes a mounting plate 1. A magnetic coupler 4 is installed at one end of the mounting plate 1. The surface of the magnetic coupler 4 is rotatably connected to a stirring motor 2 installed on the other side of the mounting plate 1 via a belt 3. A stirring and plasticizing screw 6 is installed at one end of the magnetic coupler 4. A feed plunger cylinder 7 is installed on one side of the stirring and plasticizing screw 6. A feeding cylinder 8 is installed at the end of the feed plunger cylinder 7. A feed inlet 5 is installed on the side of the feed plunger cylinder 7 away from the feeding cylinder 8. A feed sealing rod 14 is installed on the side of the feed plunger cylinder 7 near the feed inlet 5. A sealing ring 11 is installed at the output end of the stirring and plasticizing screw 6. An injection cylinder 10 and a storage bin 9 are respectively installed on both sides of the sealing ring 11. The storage bin 9 is provided with a discharge port 13. A discharge sealing rod 12 is installed at the end of the discharge port 13.

[0018] By adding a primary feed plunger cylinder 7 to the traditional feed inlet, a feed sealing device is installed at the feed inlet 5 of the feed plunger cylinder 7. The other end of the sealing device is connected to the hopper. The feed plunger cylinder 7 is driven by a feeding hydraulic cylinder 8 or an electric cylinder. The discharge port 13 of the feed plunger cylinder 7 is connected to the feed inlet of the screw, and the discharge port of the screw is connected to the feed inlet of the plunger cylinder. The feed inlet of the plunger cylinder is located at the rear of the plunger cylinder. The diameter of the plunger rod is smaller than the diameter of the plunger cylinder, so the plasticized material is conveyed forward from the gap between the plunger rod and the plunger cylinder to the front end of the plunger rod, and then pushes the plunger rod to move backward. This causes the displacement sensor connected to the plunger rod to change its value to the set metering value, completing the storage displacement metering. Before injection, The feed sealing rod is closed, the discharge sealing rod is opened, and the piston of the injection cylinder 10 pushes the plunger rod forward to send the plastic material in the storage bin 10 into the closed cavity of the mold for cooling and molding. After injection, the storage sealing rod is closed and the feed sealing rod 14 is opened. At this time, the feed plunger cylinder 7 moves backward. After the feed cylinder has moved for the required time, the feed sealing rod is opened, and the piston of the feed plunger cylinder 7 pushes the feed piston to move, sending the paste resin into the tail of the screw. The thrust of its movement mainly comes from the thrust of the feed piston, which pushes the resin to move in the screw groove and gradually plasticize it. When the material reaches the front end of the screw, it enters the feed port of the plunger cylinder, thus completing the plasticization of the material.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A resin feeding and injection device, comprising a mounting plate (1), characterized in that: A magnetic coupler (4) is installed at the end of the mounting plate (1). The surface of the magnetic coupler (4) is connected to the stirring motor (2) installed on the other side of the mounting plate (1) via a belt (3). A stirring and plasticizing screw (6) is installed at the end of the magnetic coupler (4). A feed plunger cylinder (7) is installed on one side of the stirring and plasticizing screw (6). A feeding cylinder (8) is installed at the end of the feed plunger cylinder (7). A feed inlet (5) is installed on the side of the feed plunger cylinder (7) away from the feeding cylinder (8). A sealing ring (11) is installed at the output end of the stirring and plasticizing screw (6). An injection cylinder (10) and a storage bin (9) are installed on both sides of the sealing ring (11). A discharge port (13) is provided in the storage bin (9).

2. A paste resin feeding injection device according to claim 1, wherein: A discharge sealing rod (12) is installed at the end of the discharge port (13).

3. A paste resin feeding injection device according to claim 1, wherein: The feed plunger cylinder (7) is equipped with a feed sealing rod (14) on the side near the feed inlet (5).

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