Manufacturing method of multi-section cooling machine barrel

Abstract

The manufacturing method of the multi-section cooling machine barrel comprises the following steps: manufacturing the barrel body and manufacturing the connecting structure; a liquid inlet channel and a liquid outlet channel are manufactured in the connecting protrusion, and cooling channels are manufactured in the side wall of the feeding section, so that the cooling channels are arranged in the axial direction of the barrel and circumferentially distributed in the side wall of the feeding section. And a liquid inlet pipe is arranged in the cooling channel, so that the liquid inlet pipe is communicated with the liquid inlet channel, a liquid passing gap is reserved between the outer wall of the liquid inlet pipe and the inner wall of the cooling channel, and the liquid passing gap is communicated with the liquid outlet channel, so that the manufacturing of the multi-section cooling machine barrel is completed. The multi-section cooling device has the advantages that the multiple cooling channels penetrate through the machine barrel, so that the machine barrel is subjected to multi-section cooling, whether mold warm oil or cooling water is introduced into the cooling channels, the temperature of a melt is constant, temperature cooling of the whole machine barrel is achieved, materials in the machine barrel are fed smoothly, and the using effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of barrel manufacturing, and in particular to a method for manufacturing a multi-stage cooling barrel. Background Art

[0002] There is a Chinese invention patent application with application number CN201510043876.9 and the name of "A cooling device for the barrel of an injection molding machine" which discloses a cooling device for the barrel of an injection molding machine, including a barrel and a barrel seat, the barrel seat is sleeved on the outside of the barrel, the barrel seat and the barrel are both provided with a blanking port, the barrel seat is provided with a cooling water channel, and the two ends of the cooling water channel are respectively provided with a water inlet and a water outlet, and the cooling water channel is located around the blanking port; a water channel is directly opened on the barrel seat, and the cooling water channel is moved from the barrel to the barrel seat, and no other parts need to be welded. The barrel cooling device disclosed in the invention has a simple structure, a simple processing technology, and a good leak-proof effect; the cooling effect is improved, the heat is effectively prevented from being transferred to the rear, the melting process of the plastic is shortened, and the melting efficiency is improved. However, the cooling water channel of the barrel of the injection molding machine only covers the area around the blanking port, and the arrangement range of the cooling water channel is small, so the structure of the barrel cooling device of the injection molding machine needs to be further improved. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for manufacturing a multi-stage cooling barrel in which a cooling water channel can cover the feeding position of the barrel and realize cooling of various parts of the barrel in response to the above-mentioned existing technical status.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: the manufacturing method of the multi-stage cooling barrel is characterized by comprising the following steps:

[0005] 1. Making a barrel, a feeding section and a feeding section, and making a barrel feeding port on the feeding section;

[0006] 2. Making a connection structure, making a connection protrusion on the outer wall of the end of the feeding section, so that the connection protrusion is connected to the unloading section;

[0007] 3. Making a cooling liquid channel, making a liquid inlet channel and a liquid outlet channel in the connecting protrusion, and making a cooling channel in the side wall of the feeding section, so that the cooling channel is arranged along the axial direction of the cylinder and distributed circumferentially in the side wall of the feeding section;

[0008] Fourth, install the liquid inlet pipe. Set the liquid inlet pipe in the cooling channel so that the liquid inlet pipe is connected with the liquid inlet channel, leave a liquid gap between the outer wall of the liquid inlet pipe and the inner wall of the cooling channel, and connect the liquid gap with the liquid outlet channel, thus completing the production of the multi-stage cooling barrel.

[0009] As an improvement, in step three, the liquid inlet channel can preferably be a long liquid inlet hole directly drilled on the connecting protrusion, the long liquid inlet holes are distributed along the circumference of the connecting protrusion, and adjacent long liquid inlet holes are connected, and the end openings of the long liquid inlet holes are sealed by bolts.

[0010] As an improvement, in step three, the liquid outlet channel can preferably be a long liquid outlet hole directly drilled on the connecting protrusion, the long liquid outlet holes are distributed along the circumference of the connecting protrusion, and adjacent liquid outlet holes are connected, and the end openings of the long liquid outlet holes are sealed by bolts.

[0011] As an improvement, in step 2, the connecting protrusion may preferably be a connecting flange, and platform surfaces distributed at intervals are made on the side wall of the connecting flange, and the bolts are connected to the corresponding long hole openings of the platform surfaces.

[0012] As an improvement, in step four, the cooling channel is connected to the liquid inlet channel, and a hollow positioning nut may preferably be fixed on the connecting port between the cooling channel and the liquid inlet channel, and the end of the liquid inlet pipe is connected to the positioning nut.

[0013] As a further improvement, an end face opening may be preferably provided on the end face of the connecting protrusion, the cooling channel is a long hole structure drilled directly along the axial direction of the cylinder, the end face opening is the end opening of the long hole structure, and a bolt is embedded and sealed on each of the end face openings.

[0014] As an improvement, in step one, the barrel discharge port may preferably be disposed eccentrically relative to the discharge section.

[0015] As a further improvement, the inner wall of the barrel corresponding to the barrel discharge port may preferably be a spiral slope that can increase the forward thrust of the material.

[0016] As an improvement, a lower material section cooling channel may preferably be provided in the side wall of the lower material section.

[0017] As a further improvement, the cooling channel of the unloading section may preferably include a front channel, a middle channel surrounding the unloading port of the barrel, and a rear channel, and the front channel, the middle channel and the rear channel are interconnected.

[0018] Compared with the prior art, the advantages of the present invention are: a cooling channel is made in the side wall of the feeding section, so that the cooling channel is arranged along the axial direction of the barrel and distributed circumferentially in the side wall of the feeding section, there are multiple cooling channels and they pass through the barrel respectively, so that the barrel is cooled in multiple stages, and whether the mold temperature oil or cooling water passes through the cooling channel, it is beneficial to keep the temperature of the melt constant, realize the temperature cooling of the entire barrel, make the barrel material feeding smooth, and have a good use effect; a liquid inlet pipe is installed in the cooling channel, which extends the flow distance of the coolant, fully takes away the heat of the barrel, and also helps to avoid the reflux of the coolant and reduce the energy consumption of the coolant circulation; the liquid inlet channel, the liquid outlet channel, the cooling channel, and the cooling channel of the feeding section are all directly processed on the barrel by drilling, which reduces the difficulty of production and facilitates the determination and production of specific specifications; the barrel feeding port adopts an offset single-sided inclined setting, which can force the viscous solid material to be well extruded and can be sheared, which is conducive to material feeding and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the manufacturing process of an embodiment of the present invention;

[0020] Figure 2 It is a three-dimensional diagram of a barrel made according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 The structural breakdown diagram of

[0022] Figure 4 yes Figure 2 A top view of

[0023] Figure 5 yes Figure 4 Sectional view along line AA;

[0024] Figure 6 yes Figure 4 The cross section along line BB;

[0025] Figure 7 yes Figure 4 The cross-section along the CC line;

[0026] Figure 8 yes Figure 4 The cross section along line DD in the middle;

[0027] Fig. 9 yes Figure 4 The cross-section along line EE in the middle;

[0028] Fig.10 yes Figure 4 Section along line FF;

[0029] Fig.11 yes Figure 2A three-dimensional diagram of the middle and lower material section;

[0030] Fig.12 yes Fig.11 Side projection of

[0031] Fig.13 yes Fig.12 The cross section along line GG in the middle;

[0032] Fig.14 yes Figure 2 A three-dimensional diagram of the feeding section;

[0033] Fig.15 yes Fig.14 The structural breakdown diagram of

[0034] Fig.16 yes Figure 5 Enlarged view of part I. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings.

[0036] like Figures 1 to 16 As shown, the method for manufacturing a multi-stage cooling barrel of this embodiment 1 includes the following steps:

[0037] 1. Make a barrel, a feeding section 1 and a feeding section 2, and make a barrel feeding port 11 on the feeding section 1; the barrel feeding port 11 is eccentrically arranged relative to the feeding section. The inner wall of the barrel corresponding to the barrel feeding port 11 is a spiral inclined surface 111 that can increase the forward thrust of the material.

[0038] 2. Make a connecting structure, make a connecting protrusion 3 on the outer wall of the end of the feeding section 2, so that the connecting protrusion 3 is connected to the unloading section 1; the connecting protrusion 3 is a connecting flange, and platform surfaces 33 are made on the side wall of the connecting flange with intervals, and the bolts 5 are connected to the corresponding long hole openings of the platform surfaces 33.

[0039] 3. Making a cooling liquid channel, making a liquid inlet channel 31 and a liquid outlet channel 32 in the connecting protrusion 3, and making a cooling channel 21 in the side wall of the feeding section 2, so that the cooling channel 21 is arranged along the axial direction of the cylinder and distributed circumferentially in the side wall of the feeding section 2;

[0040] 4. Install the liquid inlet pipe 4. Set the liquid inlet pipe 4 in the cooling channel 21 so that the liquid inlet pipe 4 is connected to the liquid inlet channel 31. Leave a liquid gap between the outer wall of the liquid inlet pipe 4 and the inner wall of the cooling channel 21 so that the liquid gap is connected to the liquid outlet channel 32. This completes the production of the multi-stage cooling barrel.

[0041] In step 3, the liquid inlet channel 31 is a liquid inlet long hole directly drilled on the connecting protrusion 3, the liquid inlet long holes are distributed along the circumference of the connecting protrusion 3, and the adjacent liquid inlet long holes are connected, and the end openings of the liquid inlet long holes are sealed by bolts 5. The liquid outlet channel 32 is a liquid outlet long hole directly drilled on the connecting protrusion 3, the liquid outlet long holes are distributed along the circumference of the connecting protrusion 3, and the adjacent liquid outlet long holes are connected, and the end openings of the liquid outlet long holes are sealed by bolts 5.

[0042] In step 4, the cooling channel 21 is connected with the liquid inlet channel 31, and a hollow positioning nut 41 is fixed on the connecting port between the cooling channel 21 and the liquid inlet channel 31, and the end of the liquid inlet pipe 4 is connected to the positioning nut 41. An end face opening is arranged on the end face of the connecting protrusion 3, and the cooling channel 21 is a long hole structure directly drilled along the axial direction of the barrel, and the end face opening is the end opening of the long hole structure, and a bolt 5 is embedded and sealed on each end face opening. When the barrel is working, remove one bolt 5 of each of the liquid inlet channel 31 and the liquid outlet channel 32, and connect the opening to the circulation pump and the cooling water source through a pipeline, so as to realize the circulating cooling of the cooling water. The cooling water flows from the liquid inlet channel 31 along the liquid inlet pipe 4, flows out from the opening at the other end of the liquid inlet pipe 4, enters the liquid gap, and then flows into the liquid outlet channel 32 along the liquid gap, and finally leaves the barrel.

[0043] In step 4, before the barrel is manufactured, a cooling channel for the blanking section is provided in the side wall of the blanking section 1. The cooling channel for the blanking section includes a front channel 12, a middle channel 13 surrounding the barrel blanking port 11, and a rear channel 14. The front channel 12, the middle channel 13, and the rear channel 14 are interconnected. The front channel 12, the middle channel 13, and the rear channel 14 are also manufactured by drilling holes directly in the barrel. The specific structure can be seen in FIG. Figures 8 to 10 When the barrel is working, open one bolt of each of the front channel 12 and the rear channel 14, and connect the openings to the circulation pump and the cooling water source through pipes to achieve circulating cooling of cooling water. The difference from the water path of the feeding section is that the water path of the unloading section is shorter, so there is no need to use the liquid inlet pipe 4.

Claims

1. A method for manufacturing a multi-stage cooling barrel, characterized in that: The following steps are included:

1. Manufacturing a barrel, manufacturing a material discharge section (1) and a material feeding section (2), and manufacturing a barrel discharge port (11) on the material discharge section (1); 2. Making a connection structure, making a connection protrusion (3) on the outer wall of the end of the feeding section (2), so that the connection protrusion (3) is connected to the unloading section (1); 3. Making a cooling liquid channel, making a liquid inlet channel (31) and a liquid outlet channel (32) in the connecting protrusion (3), and making a cooling channel (21) in the side wall of the feeding section (2), so that the cooling channel (21) is arranged along the axial direction of the cylinder and distributed circumferentially in the side wall of the feeding section (2); Fourth, install the liquid inlet pipe (4). The liquid inlet pipe (4) is arranged in the cooling channel (21) so that the liquid inlet pipe (4) is connected to the liquid inlet channel (31). A liquid gap is left between the outer wall of the liquid inlet pipe (4) and the inner wall of the cooling channel (21), so that the liquid gap is connected to the liquid outlet channel (32), thereby completing the production of the multi-stage cooling barrel.

2. The method according to claim 1, characterized in that: In step three, the liquid inlet channel (31) is a long liquid inlet hole directly drilled on the connecting protrusion (3), the long liquid inlet holes are distributed along the circumference of the connecting protrusion (3), and adjacent long liquid inlet holes are connected, and the end openings of the long liquid inlet holes are sealed by bolts (5).

3. The method according to claim 1, characterized in that: In step three, the liquid outlet channel (32) is a long liquid outlet hole directly drilled on the connecting protrusion (3), the long liquid outlet holes are distributed along the circumference of the connecting protrusion (3), and adjacent liquid outlet holes are connected, and the end openings of the long liquid outlet holes are sealed by bolts (5).

4. The method according to claim 2 or 3, characterized in that: In step 2, the connecting protrusion (3) is a connecting flange, and platform surfaces (33) are formed on the side wall of the connecting flange at intervals, and the bolts (5) are connected to the corresponding long hole openings of the platform surfaces (33).

5. The method according to any one of claims 1 to 3, characterized in that: In step 4, the cooling channel (21) is connected to the liquid inlet channel (31), a hollow positioning nut (41) is fixed on the connecting port between the cooling channel (21) and the liquid inlet channel (31), and the end of the liquid inlet pipe (4) is connected to the positioning nut (41).

6. The method according to claim 5, characterized in that: An end face opening is provided on the end face of the connecting protrusion (3); the cooling channel (21) is a long hole structure drilled directly along the axial direction of the cylinder; the end face opening is the end opening of the long hole structure; and a bolt (5) is embedded and sealed on each end face opening.

7. The method according to any one of claims 1 to 3, characterized in that: In step 1, the barrel discharge port (11) is eccentrically arranged relative to the discharge section.

8. The method according to claim 7, characterized in that: The inner wall of the barrel corresponding to the barrel discharge port (11) is a spiral inclined surface (111) capable of increasing the forward thrust of the material.

9. The method according to any one of claims 1 to 3, characterized in that: A material lowering section cooling channel is arranged in the side wall of the material lowering section (1).

10. The manufacturing method according to claim 9, characterized in that: The cooling channel of the unloading section comprises a front channel (12), a middle channel (13) surrounding the unloading port (11) of the barrel, and a rear channel (14); the front channel (12), the middle channel (13) and the rear channel (14) are interconnected.

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