Fully-coated cooling device for machine barrel

Abstract

A fully-coated cooling device for a machine barrel comprises a barrel body, the barrel body is divided into a discharging section and a feeding section, a discharging opening is formed in the discharging section, an annular groove is formed in the connecting position of the discharging section and the feeding section, cooling water can be introduced into the annular groove, and the feeding section is connected with the annular groove. A spiral baffle capable of enabling cooling water to move forwards spirally is arranged in the annular groove, a sealing cover is arranged on an opening of the annular groove, and water passing openings capable of being communicated with the starting position and the ending position of the spiral baffle respectively are formed in the sealing cover. The utility model has the advantages that the barrel body adopts an integrated design, so that the barrel bodies at the two ends do not need to be spliced mutually, and a fixed flange and a fixed screw are omitted; through the structure of the annular groove and the spiral baffle, materials and cooling water can be subjected to sufficient heat exchange, the annular groove is sealed through the sealing cover, the water passing opening is reserved in the sealing cover, and after the water passing opening is communicated with the conveying pump, the high-speed circulating cooling function of the cooling water can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine barrel technology, and in particular to a fully enclosed cooling device for the barrel. Background Technology

[0002] A Chinese invention patent application (CN201510043876.9) entitled "A Cooling Device for Injection Molding Machine Barrel" discloses a barrel cooling device for an injection molding machine. The device includes a barrel and a barrel base, with the barrel base fitted around the outside of the barrel. Both the barrel base and the barrel have material discharge ports. The barrel base has cooling water channels with inlets and outlets at both ends, located around the material discharge ports. The water channels are directly formed on the barrel base, moving the cooling water channels from the top of the barrel to the barrel base, without the need for welding other components. This invention discloses a barrel cooling device for injection molding machines with a simple structure, simple processing technology, and good leak-proof effect. It improves cooling efficiency, effectively prevents heat transfer to the rear, shortens the melting process of the plastic, and increases melting efficiency. However, the injection molding machine barrel has changed from a two-part barrel assembly method to a barrel fixed to a barrel base method. In essence, it is still a structure of processing two parts in sections to make cooling water pipes and then assembling them. Furthermore, the distance between the cooling water pipes and the inner wall of the barrel is increased compared to making them directly on the barrel. Therefore, the structure of this device still needs further improvement. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a fully enclosed cooling device for the barrel, which has a cooling structure directly installed on the unloading section of the barrel, has strong overall integrity, and is easy to install, in view of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a fully enclosed cooling device for a cylinder, including a cylinder body, the cylinder body being divided into a feeding section and a feeding section, a feeding port being provided on the feeding section, characterized in that: an annular groove for cooling water to pass through is provided at the connection position between the feeding section and the feeding section, a spiral baffle for allowing the cooling water to spiral forward is provided in the annular groove, a sealing cover is provided on the opening of the annular groove, and a water inlet is provided on the sealing cover for communicating with the start and end positions of the spiral baffle respectively.

[0005] As an improvement, the opening of the annular groove can preferably be divided into an upper opening and a lower opening by a partition rod, and the sealing cover includes an arc-shaped upper cover and a lower cover, with two water inlets provided on the lower cover.

[0006] As a further improvement, a steam outlet can preferably be provided on the upper cover.

[0007] As an improvement, the sealing cover can preferably be sealed to the corresponding opening by sealing strips on both sides of the sealing cover.

[0008] As a further improvement, the top surface of the sealing cover may preferably be provided with annular notches on both sides, and the corresponding sealing strip is fitted into the recess formed by the notch and the corresponding cylinder sidewall.

[0009] As an improvement, a spiral friction groove that can increase the heat exchange area between the material and the cooling water can preferably be provided on the inner wall of the cylinder at the position corresponding to the annular groove.

[0010] In a further improvement, the spiral friction groove can preferably extend from the discharge port to the feed end of the feeding section.

[0011] As an improvement, the diameter of the unloading section can preferably be larger than the diameter of the feeding section.

[0012] Further improvements include the option to provide positioning holes at the bottom of the barrel corresponding to the discharge port, and to provide positioning holes at intervals at the top of the feeding section.

[0013] As a further improvement, a connecting flange can preferably be welded to the end of the feeding section, and the end of the connecting flange is provided with a keyway for inserting a positioning key.

[0014] Compared with the prior art, the advantages of this utility model are as follows: the cylinder adopts an integrated design, eliminating the need for the two end cylinders to be spliced ​​together, thus omitting the fixing flange and fixing screws; through the structure of the annular groove and spiral baffle, the material can fully exchange heat with the cooling water, the annular groove is sealed by a sealing cover, and a water inlet is left on the sealing cover. After the water inlet is connected to the conveying pump, the high-speed circulation cooling function of the cooling water can be realized; a spiral friction groove is provided on the inner wall of the cylinder to further increase the heat exchange between the material and the cooling water, and to keep the material conveyed into the feeding section warm, avoiding the phenomenon of coating due to temperature rise, maintaining the stable conveying of solid materials, and achieving high material conveying efficiency and good conveying effect. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A three-dimensional image from another angle;

[0017] Figure 3 yes Figure 1 Side projection view;

[0018] Figure 4 yes Figure 3 Cross-sectional view along line AA;

[0019] Figure 5 yes Figure 1 Exploded structural diagram;

[0020] Figure 6 yes Figure 5 A structural breakdown diagram from another perspective. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 6 As shown, the fully enclosed cooling device of this embodiment includes a cylinder body, which is divided into a feeding section 1 and a feeding section 2. A feeding port 11 is provided on the feeding section 1. An annular groove 12, through which cooling water can pass, is provided at the connection between the feeding section 1 and the feeding section 2. A spiral baffle 13, which allows the cooling water to spiral forward, is provided within the annular groove 12. A sealing cover is provided on the opening of the annular groove 12, and a water inlet 31, which connects to the beginning and end positions of the spiral baffle 13, respectively, is provided on the sealing cover. The opening of the annular groove 12 is divided into an upper opening and a lower opening by a partition rod. The sealing cover includes an arc-shaped upper cover 4 and a lower cover 3, with two water inlets 31 provided on the lower cover 3. A steam outlet 41 is provided on the upper cover 4. The sealing cover is sealed to the corresponding openings by sealing strips 42 on both sides of the sealing cover. The top surface of the sealing cap has annular notches on both sides, and the corresponding sealing strip is fitted into the recess formed by the notch and the corresponding side wall of the cylinder.

[0023] A spiral friction groove 14 is provided on the inner wall of the cylinder corresponding to the annular groove 12, which can increase the heat exchange area between the material and the cooling water. The spiral friction groove 14 extends from the discharge port 11 to the feed end of the feeding section 2.

[0024] The diameter of the unloading section 1 is larger than the diameter of the feeding section 2. A positioning hole 15 is provided at the bottom of the barrel corresponding to the unloading port 11, and positioning holes 15 are provided at intervals at the top of the feeding section 2. A connecting flange 5 is welded to the end of the unloading section 1, and a keyway 51 for inserting a positioning key is provided at the end of the connecting flange 5.

Claims

1. A barrel-type cooling device with full enclosure, comprising a barrel body, the barrel body being divided into a feeding section (1) and a feeding section (2), wherein a feeding port (11) is provided on the feeding section (1), characterized in that: An annular groove (12) for cooling water to pass through is provided at the connection between the feeding section (1) and the feeding section (2). A spiral baffle (13) for the cooling water to spiral forward is provided in the annular groove (12). A sealing cover is provided on the opening of the annular groove (12). A water inlet (31) is provided on the sealing cover for connecting to the beginning and end positions of the spiral baffle (13).

2. The barrel-enclosed cooling device according to claim 1, characterized in that: The opening of the annular groove (12) is divided into an upper opening and a lower opening by a partition rod. The sealing cover includes an arc-shaped upper cover (4) and a lower cover (3), and two water inlets (31) are provided on the lower cover (3).

3. The barrel-enclosed cooling device according to claim 2, characterized in that: A steam outlet (41) is provided on the upper cover (4).

4. The barrel-enclosed cooling device according to any one of claims 1 to 3, characterized in that: The sealing cover is sealed to the corresponding opening by the sealing strips (42) on both sides of the sealing cover.

5. The barrel-enclosed cooling device according to claim 4, characterized in that: The top surface of the sealing cap is provided with annular notches on both sides, and the corresponding sealing strip is fitted into the recess formed by the notch and the corresponding cylinder side wall.

6. The barrel-enclosed cooling device according to any one of claims 1 to 3, characterized in that: A spiral friction groove (14) is provided on the inner wall of the cylinder corresponding to the annular groove (12) to increase the heat exchange area between the material and the cooling water.

7. The barrel-enclosed cooling device according to claim 6, characterized in that: The spiral friction groove (14) extends from the discharge port (11) to the feed end of the feeding section (2).

8. The barrel-enclosed cooling device according to any one of claims 1 to 3, characterized in that: The diameter of the unloading section (1) is larger than the diameter of the feeding section (2).

9. The barrel-enclosed cooling device according to claim 8, characterized in that: A positioning hole (15) is provided at the bottom of the barrel corresponding to the discharge port (11), and positioning holes (15) are provided at intervals at the top of the feeding section (2).

10. The barrel-enclosed cooling device according to claim 8, characterized in that: A connecting flange (5) is welded to the end of the feeding section (1), and the end of the connecting flange (5) is provided with a keyway (51) into which a positioning key can be inserted.

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