Composite machine barrel for injection molding machine

Abstract

The utility model provides a composite machine barrel for an injection molding machine. The composite machine barrel solves the problem that an existing injection molding machine is large in occupied area. The second machine barrel is arranged above the first machine barrel; the feeding screw rod is arranged in the second machine barrel; the connecting seat is arranged between the second machine barrel and the first machine barrel, the connecting seat is provided with a blanking channel, one end of the blanking channel is connected with the discharge port of the second machine barrel, and the other end of the blanking channel is connected with the feed port of the first machine barrel; the heating rings are uniformly distributed on the outer walls of the second machine barrel and the first machine barrel; and the first exhaust hole is formed in the top of the second machine barrel. The second machine barrel is used for heating and drying a plastic raw material to evaporate water on the surface of the plastic raw material, then the plastic raw material is discharged through the first exhaust hole, the dried plastic raw material enters the first machine barrel through the blanking channel, and the first machine barrel is used for compacting and melting the plastic raw material and then performing injection molding; the first cylinder and the second cylinder are arranged up and down, so that the length of the injection molding machine cylinder can be effectively reduced, and the volume of the whole machine is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a composite barrel for injection molding machines. Background Art

[0002] The working principle of the injection molding machine is to add granular or powdered plastic into the barrel, and through the rotation of the screw and the heating of the outer wall of the barrel, the plastic is molten. The machine then closes the mold and moves the injection seat forward so that the nozzle is close to the gate of the mold. Then, pressurized oil is introduced into the injection cylinder to push the screw forward, thereby injecting the molten material into the closed mold with a lower temperature at a very high pressure and a relatively fast speed. After a certain period of time and pressure maintenance and cooling, it solidifies and forms, and the mold can be opened to take out the product. The barrel of the injection molding machine is generally divided into three sections. The first section is close to the feeding port and is used for preliminary heating and plastic transportation; the second section is in the middle and is used for further heating and compaction and melting of the plastic; the third section is close to the mold and is used to ensure that the plastic is completely melted and suitable for injection molding. This results in a longer barrel length, which in turn makes the entire machine larger and occupies a large area. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a composite barrel for an injection molding machine, which solves the problem that the existing injection molding machine occupies a large area.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A composite barrel for an injection molding machine, comprising a first barrel and further comprising:

[0006] a second barrel, disposed above the first barrel;

[0007] a feeding screw disposed in the second barrel, wherein the feeding screw is equipped with a power element;

[0008] A connecting seat is provided between the second barrel and the first barrel, wherein the connecting seat is provided with a blanking channel, one end of the blanking channel is connected to the discharge port of the second barrel, and the other end is connected to the feed port of the first barrel;

[0009] Heating rings are evenly distributed on the outer walls of the second barrel and the first barrel;

[0010] Exhaust hole No. 1 is set on the top of the second barrel.

[0011] The outer wall of the top of the second barrel is provided with a long groove, and the No. 1 exhaust holes are evenly distributed in the long groove.

[0012] The top of the connecting seat is provided with at least one feeding hole for communicating with the blanking channel.

[0013] The connecting seat is in a stepped shape, and the feed hole is arranged on each stepped surface.

[0014] One side of the connecting seat is also provided with an exhaust port for communicating with the blanking channel.

[0015] A baffle is provided at the exhaust port, and the baffle is provided with a No. 2 exhaust hole for communicating with the exhaust port, and the baffle is arranged at an angle.

[0016] The second barrel includes a No. 1 barrel body and a No. 2 barrel body. The feed port of the second barrel is arranged on the No. 1 barrel body, and the No. 1 barrel body is made of heat-insulating material.

[0017] The exteriors of the second barrel and the first barrel are both equipped with heat insulation covers.

[0018] The beneficial effects of the utility model are:

[0019] The second barrel is used to heat and dry the plastic raw material, evaporate the moisture on its surface, and then discharge it through the No. 1 exhaust hole. The dried plastic raw material enters the first barrel through the blanking channel. The first barrel is used to compact, melt and then injection mold the plastic raw material. By arranging the first and second barrels up and down, the length of the injection molding barrel can be effectively reduced, thereby reducing the volume of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the present utility model.

[0021] Figure 2 It is a schematic diagram of installing the heat insulation cover of the utility model.

[0022] Figure 3 It is a cross-sectional schematic diagram of the connecting seat of the utility model.

[0023] Figure 4 It is a schematic diagram of the connecting seat of the utility model.

[0024] Figure 5 It is a schematic diagram of the cooperation between the second barrel and the connecting seat of the utility model.

[0025] Figure 6 This utility model Figure 5 Enlarged schematic diagram of point A in the middle.

[0026] Figure 7 It is a cross-sectional schematic diagram of the cooperation between the second barrel and the connecting seat of the utility model.

[0027] First barrel 1, second barrel 2, No. 1 barrel 21, No. 2 barrel 22, feeding screw 3, connecting seat 4, blanking channel 5, heating ring 6, No. 1 exhaust hole 7, long groove 8, feed hole 9, exhaust port 10, baffle 11, No. 2 exhaust hole 12, heat insulation cover 13. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] In the embodiment, Figure 1 、 Figure 3 , such as 5, Figure 6 、 Figure 7 As shown, a composite barrel for an injection molding machine includes a first barrel 1, characterized in that it also includes:

[0030] The second barrel 2 is arranged above the first barrel 1;

[0031] A feeding screw 3 is provided in the inner hole of the second barrel 2, and the feeding screw 3 is equipped with a power element;

[0032] A connecting seat 4 is provided between the second barrel 1 and the first barrel 2. The connecting seat 4 is provided with a blanking channel 5. One end of the blanking channel 5 is connected to the discharge port of the second barrel 2, and the other end is connected to the feed port of the first barrel 1.

[0033] Heating coils 6 are evenly distributed on the outer walls of the second barrel 2 and the first barrel 1;

[0034] The first exhaust hole 7 is provided at the top of the second barrel 1 and is communicated with the second barrel 1 .

[0035] The power element is a motor, which is used to drive the feeding screw 3 to rotate and feed the material. The second barrel 2 is used to heat and dry the plastic raw material, evaporate the moisture on its surface, and then discharge it through the No. 1 exhaust hole 7. The dried plastic raw material enters the first barrel 1 through the blanking channel 5. The first barrel 1 is used to compact, melt and then injection mold the plastic raw material; by arranging the first barrel 1 and the second barrel 2 up and down, the length of the injection molding barrel can be effectively reduced, thereby reducing the volume of the entire machine.

[0036] In the embodiment, as in 5, Figure 6 As shown, the outer wall of the top of the second barrel 1 is provided with a long groove 8, and the first exhaust holes 7 are evenly distributed in the long groove 8. The long groove 8 leaves a distance between the heating ring 6 and the first exhaust holes 7, so that the gas can be discharged from various positions of the second barrel 2, thereby improving the pre-drying quality of the plastic raw material.

[0037] In the embodiment, Figure 1 、 Figure 2 , such as 3, Figure 4 As shown, the top of the connecting seat 4 is provided with at least one feed hole 9 for communicating with the blanking channel 5. Additives can be added through the feed hole 9 according to production needs, thereby changing the ratio of plastic raw materials and additives to produce products with different physical and chemical properties, with good versatility.

[0038] In the embodiment, Figure 1 、 Figure 2 , such as 3, Figure 4 As shown, the connecting seat 4 is stepped, and the feed hole 9 is provided on each step surface. Multiple feed holes 9 can simultaneously add different additives to improve production efficiency.

[0039] In the embodiment, Figure 3 As shown, one side of the connecting seat 4 is further provided with an exhaust port 10 for communicating with the blanking channel 5. It can be used to exhaust the raw materials entering the first barrel 1 to ensure the quality of the product.

[0040] In the embodiment, Figure 3 、 Figure 4 As shown, a baffle 11 is provided at the exhaust port 10. The baffle 11 has a second exhaust hole 12 for communicating with the exhaust port 10. The baffle 11 is tilted. The baffle 11 prevents debris from entering the first barrel 1 through the exhaust port 10 and affecting the quality of the product. Furthermore, the tilted baffle 11 prevents debris from accumulating on the baffle 11 and blocking the second exhaust hole 12.

[0041] In the embodiment, Figure 5 As shown, the second barrel 2 includes a first barrel 21 and a second barrel 22. The feed port of the second barrel 2 is provided on the first barrel 21, which is made of a heat-insulating material. This prevents the plastic raw material at the feed port of the second barrel 2 from softening prematurely, which would reduce the friction between the plastic raw material at the feed port of the second barrel 2 and the inner wall of the first barrel 21 and cause material blockage.

[0042] In the embodiment, Figure 2 As shown, the exterior of the second barrel 2 and the first barrel 1 are both equipped with heat insulation covers 13 to protect the staff from being burned when they come into contact with the outer wall of the barrel.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of illustrating the present invention and are not intended to limit the implementation methods of the present invention. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to provide an exhaustive list of implementation methods. However, any obvious variations or modifications arising from the essence of the present invention remain within the scope of protection of the present invention.

Claims

1. A composite barrel for an injection molding machine, comprising a first barrel (1), characterized in that: Also includes: A second barrel (2) is arranged above the first barrel (1); A feeding screw (3) is arranged in the inner hole of the second barrel (2), and the feeding screw (3) is equipped with a power element; A connecting seat (4) is arranged between the second barrel (1) and the first barrel (2), and the connecting seat (4) is provided with a blanking channel (5), one end of the blanking channel (5) is connected to the discharge port of the second barrel (2), and the other end is connected to the feed port of the first barrel (1); Heating rings (6) are evenly distributed on the outer walls of the second barrel (2) and the first barrel (1); The first exhaust hole (7) is provided at the top of the second barrel (1) and is in communication with the second barrel (1).

2. The composite barrel for an injection molding machine according to claim 1, wherein: The outer wall of the top of the second barrel (1) is provided with a long groove (8), and the No. 1 exhaust holes (7) are evenly distributed in the long groove (8).

3. The composite barrel for an injection molding machine according to claim 1, wherein: The top of the connecting seat (4) is provided with at least one feeding hole (9) for communicating with the blanking channel (5).

4. The composite barrel for an injection molding machine according to claim 3, wherein: The connecting seat (4) is stepped, and the feed hole (9) is provided on each stepped surface.

5. The composite barrel for an injection molding machine according to claim 1, wherein: An exhaust port (10) for communicating with the blanking channel (5) is also provided on one side of the connecting seat (4).

6. The composite barrel for an injection molding machine according to claim 5, wherein: A baffle (11) is provided at the exhaust port (10), and the baffle (11) is provided with a second exhaust hole (12) for communicating with the exhaust port (10), and the baffle (11) is arranged at an angle.

7. The composite barrel for an injection molding machine according to claim 1, wherein: The second barrel (2) comprises a first barrel (21) and a second barrel (22), the feed port of the second barrel (2) is arranged on the first barrel (21), and the first barrel (21) is made of a heat-insulating material.

8. The composite barrel for an injection molding machine according to claim 1, wherein: A heat shield (13) is installed on the outside of the second barrel (2) and the first barrel (1).

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