Feed opening structure of machine barrel

Abstract

A machine barrel feeding opening structure comprises a machine barrel feeding section capable of being communicated with a machine barrel discharging section, a feeding opening is formed in the machine barrel feeding section, the machine barrel feeding section is divided into a machine barrel feeding section body and a machine barrel feeding section body, the feeding opening is formed in the side portion of the machine barrel feeding section body, an annular concave part is arranged on the outer wall of the machine barrel feeding section body, and the machine barrel feeding section body is connected with the machine barrel feeding section body. An annular heat conduction boss is arranged on the bottom face of the annular concave part, and a spiral groove capable of being embedded with a cooling water pipe is formed in the heat conduction boss. The cooling device has the advantages that materials can be cooled at the material feeding position, a transmission water inlet and outlet hole type cooling mode is changed, a cooling water pipe winding mode is adopted, a heating ring can be additionally arranged outside the cooling water pipe, the cooling effect can be achieved, heating can be achieved at the same time, the temperature balance degree is high, and the cooling effect is good. And the problem that the temperature of each area is too clear due to extrusion of transmission cooling water is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of injection molding machine cylinder technical field, especially refers to a cylinder blanking port structure. BACKGROUND

[0002] A kind of cooling device of injection molding machine cylinder is disclosed in the Chinese utility model patent with the application No. CN201821352535.5 named "a kind of cooling device of injection molding machine cylinder", including injection molding machine cylinder, fin and water pipe, the screw is rotated in the injection molding machine cylinder, and the front end of injection molding machine cylinder is provided with injection port, the upper part of right of injection molding machine cylinder is provided with feed inlet, and feed inlet is installed with feed tank, the outside of injection molding machine cylinder is ringed with heating hoop, and the ring of heating hoop is provided with fin, the middle ring of fin is provided with water pipe, and water pipe is communicated with water tank.The cooling device of injection molding machine cylinder, structure is reasonably arranged, the combination of fin and cooling water circulation system is utilized, the injection molding machine cylinder with excessively high heat is cooled, the heat dissipation area of fin is large, and heat diffusion speed is fast, simultaneously, the circulating cooling water of environmental protection low cost is used to cool down, and cooling mode is gentle, and mechanical damage cannot be caused, and it is economic and environmental protection, overall heat dissipation device is simple, heat dissipation effect is fast, and cost is low, and the economic pressure of factory is also reduced. However, the cooling device of the cylinder is arranged at the position corresponding to material stirring structure, and there is no cooling structure at material feeding position, so the structure of the cylinder still needs to be further improved. SUMMARY

[0003] The utility model solves the technical problem to be aimed at the above-mentioned prior art status and provides a kind of cylinder blanking port structure that can cool material at material feeding position.

[0004] The utility model discloses the technical scheme for solving the above-mentioned technical problem: the cylinder blanking port structure of the utility model, including the cylinder feeding section that can be connected with the cylinder discharge section, is provided with blanking port on the cylinder feeding section, and its characterized in that: the cylinder feeding section is divided into cylinder blanking section and cylinder feeding section, the blanking port is arranged at the side of cylinder blanking section, annular recess is arranged on the outer wall of the cylinder feeding section, annular heat-conducting boss is arranged on the bottom surface of the annular recess, and helical groove that can embed cooling water pipe is arranged on the heat-conducting boss.

[0005] As improvement, the cooling water pipe can preferably be copper pipe that can be spirally arranged, the diameter of the copper pipe is less than the opening depth of the helical groove, the bottom of the helical groove is arc surface, and the outer wall of the copper pipe is adapted to the arc surface.

[0006] Further improvement, the outer wall of the copper pipe can preferably be coated with heating ring.

[0007] As an improvement, the inner wall of the barrel feeding section corresponding to the helical groove is circumferentially provided with protrusions extending out of the inner wall of the barrel feeding section.

[0008] Further improvement, the inner wall of the barrel feeding section between the end of the protrusion close to the discharge port and the adjacent protrusion away from the discharge port can be preferably provided with a slope surface respectively.

[0009] As an improvement, the end surface of the discharge port can be preferably an arc surface with a recessed middle part.

[0010] As an improvement, the end part of the barrel discharge section can be preferably provided with an end recess, and a bearing capable of reducing friction of the screw is arranged in the end recess.

[0011] Further improvement, the bearing can be preferably two, and an annular gap is left between the two bearings, and an oil injection hole is arranged on the side wall of the barrel discharge section corresponding to the gap.

[0012] As an improvement, a material blocking protrusion capable of preventing backflow of the material can be preferably arranged on the inner wall of the barrel discharge section corresponding to the discharge port.

[0013] Further improvement, a through groove can be preferably arranged on the inner wall of the barrel discharge section, the material blocking protrusion is inserted into the through groove, and a positioning block is arranged on the outer wall of the barrel discharge section, and the positioning block is fixed with the material blocking protrusion.

[0014] Compared with the prior art, the utility model has the advantages that the helical groove capable of embedding the cooling water pipe is arranged at the feeding position of the barrel, so that the material can be cooled at the material feeding position, the structure changes the cooling mode of the transmission in-out water hole type, the heating ring can be added outside the cooling water pipe in the form of winding the cooling water pipe, the temperature balance degree is high, the problem that the transmission cooling water causes the temperature of each region to be too distinct due to extrusion is avoided, the protrusions are circumferentially distributed on the inner wall of the barrel feeding section corresponding to the helical groove, the extrusion of the material can be increased, meanwhile, more large-particle materials can be stored through the space between the adjacent protrusions, so that the discharging capacity of the sheet material and the small-particle material is enhanced, the discharge port adopts the circular arc discharging form, the conveying fluency of the solid material is ensured, and the backflow of the conveying material is not easy. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the utility model embodiment;

[0016] Figure 2 It is a side projection view of Figure 1 ; It is

[0017] Figure 3 It is Figure 2 the sectional view along line A-A in ;

[0018] Figure 4 is Figure 1 a structural exploded view of the

[0019] Figure 5 is Figure 4 a further structural exploded view of the

[0020] Figure 6 is Figure 5 a further structural exploded view of the

[0021] Figure 7 is Figure 6 a structural exploded view of the DETAILED DESCRIPTION

[0022] The utility model will be described in further detail below in conjunction with the drawings.

[0023] As Figures 1 to 7 shown, the machine cylinder blanking port structure of the embodiment, including can with machine cylinder discharge section intercommunication machine cylinder feeding section, set up blanking port on machine cylinder feeding section, machine cylinder feeding section is divided into machine cylinder blanking section 1 and machine cylinder feeding section 2, blanking port 11 is set up in the side of machine cylinder blanking section 1, set up annular recess 21 on the outer wall of machine cylinder feeding section 2, set up annular heat conduction boss on the bottom surface of annular recess 21, set up the helical groove 22 that can embed cooling water pipe 3 on heat conduction boss. Cooling water pipe 3 is copper pipe that can be helically arranged, the diameter of copper pipe is less than the opening depth of helical groove 22, the bottom of helical groove 22 is arc surface, the outer wall of copper pipe is adapted to arc surface. The outer wall of copper pipe is covered with heating ring. The specific structure of heating ring belongs to the known technology, and the heating ring can be heated by electricity to increase the heat conduction temperature of the outer wall of the copper pipe. Through the joint action of the heating ring and the copper pipe filled with cooling water, the position of the helical groove is maintained at a constant temperature.

[0024] The inner wall of machine cylinder feeding section 2 corresponding to helical groove 22 is circumferentially distributed with convex strip 23, and convex strip 23 protrudes from the inner wall of machine cylinder feeding section 2. A slope surface is arranged on the inner wall of machine cylinder feeding section 2 at the end of convex strip close to blanking port 11 and between adjacent convex strips away from blanking port 11, respectively.

[0025] The end surface of blanking port 11 is an arc surface 111 with a concave middle part. An end recess 12 is arranged at the end of machine cylinder blanking section 1, and a bearing 4 for reducing the friction of the screw is arranged in the end recess 12. There are two bearings 4, and an annular gap 13 is left between the two bearings. An oil injection hole 14 is arranged on the side wall of machine cylinder blanking section corresponding to the gap 13. A bearing recess is arranged on the outer wall of bearing 4, and an inner wall recess is arranged on the inner wall of end recess 12. Bearing 4 is fixed in end recess 12 by positioning pins 41.

[0026] The material blocking protrusion 5 is inserted into the inner cavity of the barrel discharging section, when the screw rotates to push the material, the material blocking protrusion 5 can block the material flowing reversely, avoid the material flowing reversely back to the discharging opening 11, and make the discharging more smooth. The inner wall of the barrel discharging section 1 is provided with a through slot 15, the material blocking protrusion 5 is inserted into the through slot 15, and the outer wall of the barrel discharging section 1 is provided with a positioning block 6, the positioning block 6 is fixed with the material blocking protrusion 5.

Claims

1. A barrel discharge port structure, comprising a barrel feed section that communicates with a barrel discharge section, wherein a discharge port is provided on the barrel feed section, characterized in that: The barrel feeding section is divided into a barrel unloading section (1) and a barrel feeding section (2). The unloading port (11) is located on the side of the barrel unloading section (1). An annular recess (21) is provided on the outer wall of the barrel feeding section (2). An annular heat-conducting boss is provided on the bottom surface of the annular recess (21). A spiral groove (22) that can fit the cooling water pipe (3) is provided on the heat-conducting boss.

2. The barrel discharge port structure according to claim 1, characterized in that: The cooling water pipe (3) is a copper pipe that can be spirally arranged. The diameter of the copper pipe is smaller than the opening depth of the spiral groove (22). The bottom of the spiral groove (22) is an arc surface, and the outer wall of the copper pipe is adapted to the arc surface.

3. The barrel discharge port structure according to claim 2, characterized in that: A heating coil is wrapped around the outer wall of the copper tube.

4. The barrel discharge port structure according to any one of claims 1 to 3, characterized in that: The inner wall of the feed section (2) of the barrel corresponding to the spiral groove (22) is circumferentially distributed with convex strips (23), which extend out of the inner wall of the feed section (2).

5. The barrel discharge port structure according to claim 4, characterized in that: Sloping surfaces are provided on the inner wall of the feeding section of the barrel near the end of the protrusion close to the discharge port (11) and between adjacent protrusions far from the discharge port (11).

6. The barrel discharge port structure according to any one of claims 1 to 3, characterized in that: The end face of the feed port (11) is an arc-shaped surface (111) with a concave middle section at both ends.

7. The barrel discharge port structure according to any one of claims 1 to 3, characterized in that: An end groove (12) is provided at the end of the barrel feeding section (1), and a bearing (4) that can reduce screw friction is provided in the end groove (12).

8. The barrel discharge port structure according to claim 7, characterized in that: There are two bearings (4), with an annular gap (13) between them. An oil injection hole (14) is provided on the side wall of the barrel feeding section corresponding to the gap (13).

9. The barrel discharge port structure according to any one of claims 1 to 3, characterized in that: A baffle protrusion (5) is provided on the inner wall of the barrel feeding section corresponding to the feeding port (11) to prevent material backflow.

10. The barrel discharge port structure according to claim 9, characterized in that: A through groove (15) is provided on the inner wall of the barrel feeding section (1), and the material blocking protrusion (5) is inserted into the through groove (15). A positioning block (6) is provided on the outer wall of the barrel feeding section (1), and the positioning block (6) is fixed to the material blocking protrusion (5).

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