Special injection molding machine for solid silica gel with double injection molding ports

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a special injection molding machine for solid silica gel with double injection molding ports, which comprises an injection molding barrel and a piston type injection molding barrel, a feeding port of the piston type injection molding cylinder is connected with a discharging port of the injection molding cylinder through a connecting cylinder, a first discharging port is formed in the side face of the connecting cylinder, and the discharging port of the piston type injection molding cylinder is a second discharging port. According to the utility model, the piston type injection molding cylinder is designed and is used for temporarily storing materials in a mold preparation stage; and during injection molding, the first discharging opening and the second discharging opening supply materials at the same time, so that rapid material filling is achieved, and the injection molding efficiency of large workpieces or solid workpieces is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a special injection molding machine for solid silicone with double injection molding ports. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics; the injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] Traditional injection molding machines only have one injection port or directly divide one injection port into multiple branches. This will affect production efficiency due to slow material discharge during the injection molding of some large workpieces or solid workpieces. Therefore, the utility model provides a new type of double injection port solid silicone special injection molding machine. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a double injection port solid silicone special injection molding machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A double injection port solid silicone special injection molding machine, comprising:

[0007] An injection molding barrel for producing a molten material;

[0008] A piston-type injection molding cylinder, wherein the feed port of the piston-type injection molding cylinder is connected to the discharge port of the injection molding cylinder via a connecting cylinder, a first discharge port is provided on the side of the connecting cylinder, and the discharge port of the piston-type injection molding cylinder is a second discharge port;

[0009] A non-return component is arranged between the piston-type injection molding cylinder and the connecting cylinder, and the non-return component is used to prevent the molten material inside the piston-type injection molding cylinder from flowing back into the connecting cylinder.

[0010] As a further description of the above technical solution:

[0011] The injection molding cylinder for producing molten material includes: a first cylinder body, a spiral conveyor is arranged inside the first cylinder body, a feeding assembly connected to the inner cavity of the first cylinder body is arranged on the side of the first cylinder body, a main heating element is arranged on the outer side of the first cylinder body, and one end of the spiral conveyor is connected to a driving element.

[0012] As a further description of the above technical solution:

[0013] The piston type injection molding cylinder comprises: a second cylinder body, a piston disc is arranged inside the second cylinder body, one end of the piston disc is fixedly connected to a telescopic member, and the fixed part of the telescopic member is relatively fixed to the second cylinder body.

[0014] As a further description of the above technical solution:

[0015] An auxiliary heating element is fixedly connected to the outer side of the second cylinder.

[0016] As a further description of the above technical solution:

[0017] It also includes a bracket, both ends of which are fixedly connected to a mounting plate, and the fixed part of the telescopic member and the main body of the driving member are fixedly connected to the mounting plate.

[0018] As a further description of the above technical solution:

[0019] The anti-return component comprises a shaft, and the two ends of the shaft are respectively fixedly connected with a baffle plate and a baffle frame, and the end of the baffle frame is provided with a plurality of through openings, and the baffle plate is located on the inner side of the piston injection cylinder.

[0020] As a further description of the above technical solution:

[0021] The middle section of the feed assembly has a large diameter portion for storing materials.

[0022] As a further description of the above technical solution:

[0023] Control valves are installed at the ends of the first discharge port and the second discharge port.

[0024] The utility model has the following beneficial effects:

[0025] 1. Compared with the prior art, this double-injection-port solid silicone special injection molding machine is designed with a piston-type injection cylinder for temporary material storage during the mold preparation stage; during injection molding, the first discharge port and the second discharge port are used to feed the material simultaneously, thereby achieving rapid filling and improving the injection molding efficiency of large workpieces or solid workpieces.

[0026] 2. Compared with the prior art, the double-injection-port solid silicone injection molding machine has a piston-type injection molding cylinder equipped with an independent auxiliary heating element to ensure that the temperature of the solid silicone inside the piston-type injection molding cylinder is always within a suitable range to ensure the quality of the injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a double-injection-port solid silicone injection molding machine proposed by the utility model;

[0028] Figure 2This is a front view of a double injection port solid silicone special injection molding machine proposed by the utility model;

[0029] Figure 3 This is a top view of a double injection port solid silicone special injection molding machine proposed by the utility model;

[0030] Figure 4 for Figure 3 Section view of the section line at BB;

[0031] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. First cylinder; 2. Main heating element; 3. Screw conveyor; 4. Feeding assembly; 5. Driving element; 6. Mounting plate; 7. Bracket; 8. Second cylinder; 9. Auxiliary heating element; 10. Telescopic element; 11. Piston disc; 12. Connecting cylinder; 13. First discharge port; 14. Second discharge port; 15. Check assembly; 151. Shaft; 152. Baffle plate; 153. Baffle frame. DETAILED DESCRIPTION

[0034] Reference Figure 1-Figure 5 The utility model provides a double-injection-port solid silicone injection molding machine, comprising: an injection molding cylinder and a piston-type injection molding cylinder for producing molten material; the feed port of the piston-type injection molding cylinder is connected with the discharge port of the injection molding cylinder through a connecting cylinder 12, a first discharge port 13 is arranged on the side of the connecting cylinder 12, and the discharge port of the piston-type injection molding cylinder is a second discharge port 14; and a non-return component 15 is arranged between the piston-type injection molding cylinder and the connecting cylinder 12, and the non-return component 15 is used to prevent the molten material inside the piston-type injection molding cylinder from flowing back into the connecting cylinder 12.

[0035] When in use, the molten material generated by the injection molding cylinder enters into the piston injection molding cylinder, and the piston injection molding cylinder adjusts the volume by its own piston, so as to realize temporary storage of the molten material (referring to liquid silicone). In this way, when the mold is ready, the molten material generated by the injection molding cylinder can be injected into the mold cavity through the connecting cylinder 12 and the first discharge port 13; at the same time, the piston injection molding cylinder is actuated, and the internal piston is squeezed to make the molten material enter into the mold cavity through the second discharge port 14, so as to realize rapid filling; after keeping warm and maintaining pressure for a period of time, the mold is opened and the workpiece is taken out. During this period of time, the piston injection molding cylinder is just preparing for filling and preparing for the next injection molding, so as to realize efficient injection molding of large workpieces or solid workpieces.

[0036] In one embodiment, an injection molding cylinder for producing molten material includes: a first cylinder 1, a screw conveyor 3 is arranged inside the first cylinder 1, a feeding assembly 4 connected to the inner cavity of the first cylinder 1 is arranged on the side of the first cylinder 1, a main heating element 2 is arranged on the outer side of the first cylinder 1, and one end of the screw conveyor 3 is connected to a driving element 5.

[0037] The output end of the driving member 5 drives the screw conveying member 3 to rotate, thereby conveying the granular material entering the first cylinder 1 from the feeding assembly 4 forward, the granular material is heated and melted by the main heating member 2, and is pressurized and conveyed forward by the screw conveying member 3.

[0038] In one embodiment, the piston-type injection molding cylinder includes: a second cylinder 8, a piston disc 11 is arranged inside the second cylinder 8, one end of the piston disc 11 is fixedly connected to a telescopic member 10, the fixed part of the telescopic member 10 is relatively fixed to the second cylinder 8, and when the telescopic member 10 moves, it pushes the piston disc 11 to move relative to the second cylinder 8, thereby changing the volume of the second cylinder 8 in the working state.

[0039] In one embodiment, an auxiliary heating element 9 is fixedly connected to the outer side of the second cylinder 8 to keep the material inside the second cylinder 8 warm.

[0040] In one embodiment, it also includes: a bracket 7, both ends of the bracket 7 are fixedly connected to the mounting plate 6, the fixed part of the telescopic member 10 and the main body of the driving member 5 are fixedly connected to the mounting plate 6, the bracket 7 is a long rod-shaped, used to maintain the position of each structure; for example, the first cylinder 1 and the second cylinder 8 can be fixed together with the bracket 7.

[0041] In one embodiment, the anti-return assembly 15 includes: a shaft 151, with a baffle 152 and a baffle frame 153 fixedly connected to both ends of the shaft 151, and a plurality of through openings are provided at the end of the baffle frame 153. The baffle 152 is located on the inner side of the piston injection cylinder.

[0042] like Figure 5 As shown in , when the pressure inside the piston injection molding cylinder increases, the baffle 152 will be pushed tightly against the inner side of the second cylinder 8, thereby achieving sealing; conversely, when the pressure inside the connecting cylinder 12 is relatively high, the liquid material inside can easily enter the piston injection molding cylinder.

[0043] In one embodiment, the middle section of the feed assembly 4 has a large diameter storage portion for temporarily storing granular materials.

[0044] In one embodiment, control valves are installed at the ends of the first discharge port 13 and the second discharge port 14 .

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-injection-port solid silicone injection molding machine, comprising an injection molding cylinder for producing molten material, characterized in that: Also includes: A piston-type injection molding cylinder, wherein the feed port of the piston-type injection molding cylinder is connected to the discharge port of the injection molding cylinder via a connecting cylinder (12), a first discharge port (13) is provided on the side of the connecting cylinder (12), and the discharge port of the piston-type injection molding cylinder is a second discharge port (14); A non-return component (15) is provided between the piston-type injection molding cylinder and the connecting cylinder (12), and the non-return component (15) is used to prevent the molten material inside the piston-type injection molding cylinder from flowing back into the connecting cylinder (12).

2. A double injection port solid silicone special injection molding machine according to claim 1, characterized in that: The injection molding cylinder for producing molten material comprises: a first cylinder (1), a screw conveying member (3) is arranged inside the first cylinder (1), a feeding assembly (4) connected to the inner cavity of the first cylinder (1) is arranged on the side of the first cylinder (1), a main heating member (2) is arranged on the outer side of the first cylinder (1), and one end of the screw conveying member (3) is connected to a driving member (5).

3. A double injection port solid silicone special injection molding machine according to claim 2, characterized in that: The piston-type injection molding cylinder comprises: a second cylinder body (8), a piston disc (11) is arranged inside the second cylinder body (8), one end of the piston disc (11) is fixedly connected to a telescopic member (10), and the fixed part of the telescopic member (10) is relatively fixed to the second cylinder body (8).

4. A double injection port solid silicone special injection molding machine according to claim 3, characterized in that: An auxiliary heating element (9) is fixedly connected to the outer side of the second cylinder (8).

5. A double injection port solid silicone injection molding machine according to claim 3, characterized in that: Also includes: A bracket (7), both ends of which are fixedly connected to a mounting plate (6), and a fixed portion of the telescopic member (10) and a main body of the driving member (5) are fixedly connected to the mounting plate (6).

6. A double injection port solid silicone injection molding machine according to claim 1, characterized in that: The anti-return component (15) comprises a shaft (151), the two ends of which are respectively fixedly connected with a baffle (152) and a baffle frame (153), the end of the baffle frame (153) being provided with a plurality of through openings, and the baffle (152) being located on the inner side of a piston-type injection molding cylinder.

7. A double injection port solid silicone injection molding machine according to claim 2, characterized in that: The middle section of the feed assembly (4) has a large diameter portion for storing materials.

8. The double-injection-port solid silicone injection molding machine according to claim 1, characterized in that: Control valves are installed at the ends of the first discharge port (13) and the second discharge port (14).

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