Injection mechanism of injection molding machine

Abstract

The invention discloses an injection mechanism of an injection molding machine, and belongs to the technical field of injection molding machines. The pre-injection unit is arranged on the bracket; the pre-injection unit is used for containing pre-injected materials; the injection unit is arranged on the support, and the injection unit and the pre-injection unit are arranged side by side; the injection unit is communicated with the pre-injection unit through a connecting pipe, materials pre-injected in the pre-injection unit are injected into the injection unit through the connecting pipe, and the injection unit injects the materials into the mold closing mechanism. The injection mechanism of the injection molding machine is of a side injection type feeding structure, side injection type feeding is carried out, the length of a glue injection nozzle is obviously shortened through the side injection type structure, raw materials can be saved for each mold, and cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding machines, and in particular relates to an injection mechanism of an injection molding machine. Background Art

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

[0003] However, in the prior art, the injection mechanism in the injection molding machine adds raw materials such as silicone rubber into the pre-injection cavity, which is then pushed into the screw cavity by an oil cylinder, and then pushed into the injection cylinder by a motor. The rubber is added into the inclined pre-injection cavity and pushed upward by the oil cylinder, which is not convenient for adding and pushing, and the feeding is inconvenient and the safety is low. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an injection mechanism of an injection molding machine, which adopts the following technical solutions:

[0005] An injection mechanism of an injection molding machine, comprising:

[0006] Bracket;

[0007] A pre-injection unit, the pre-injection unit is arranged on the bracket; the pre-injection unit is used to contain the pre-injected material;

[0008] An injection unit is arranged on the bracket and arranged side by side with the pre-injection unit; the injection unit and the pre-injection unit are connected through a connecting pipe, the pre-injected material in the pre-injection unit is injected into the injection unit through the connecting pipe, and the injection unit injects the material into the clamping mechanism.

[0009] Furthermore, the pre-injection unit includes a pre-injection barrel and a pre-injection cylinder; the pre-injection barrel is connected to the bracket; a feeding port is provided on the pre-injection barrel; the pre-injection cylinder is connected to the pre-injection barrel to inject the material in the pre-injection barrel into the injection unit.

[0010] Furthermore, the interior of the pre-injection cylinder is hollow to form a pre-injection cavity; the pre-injection cavity is used to contain the pre-injected material.

[0011] Furthermore, the output end of the pre-injection cylinder is arranged in the pre-injection cavity to press the pre-injected material in the pre-injection cavity into the injection unit.

[0012] Furthermore, the injection unit includes a syringe and an injection cylinder; the syringe is connected to the bracket and is arranged side by side with the pre-injection cylinder; one end of the syringe is connected to the pre-injection cylinder through the connecting tube; the other end of the syringe is provided with a feeding outlet; the feeding outlet is connected to the clamping mechanism; the injection cylinder is connected to the syringe, and the injection cylinder injects the material in the syringe from the feeding outlet into the clamping mechanism.

[0013] Furthermore, the interior of the injection barrel is hollow to form an injection cavity; the injection cavity is connected to the pre-injection cavity through the connecting tube; and the material in the pre-injection cavity enters the injection cavity through the connecting tube.

[0014] Furthermore, an electronic ruler is provided in the injection cavity to achieve metered injection.

[0015] Beneficial effects:

[0016] (1) The injection mechanism of the injection molding machine provided by the present invention eliminates the need for a screw stirring structure and does not require a motor to drive the screw stirring, thereby saving process time and electrical energy and improving efficiency.

[0017] (2) In the injection mechanism of an injection molding machine provided by the present invention, the raw material is directly pushed and deflated in the pre-injection cavity, the material is pushed horizontally, the material is convenient to discharge and add, and the safety is high. Then, the raw material is pushed into the injection cavity, which saves energy and time, is safe and environmentally friendly, and ensures product quality.

[0018] (3) The injection mechanism of an injection molding machine provided by the present invention is a side injection structure, which performs side injection feeding. Through the side injection structure, the length of the injection nozzle is significantly shortened, and each mold can save raw materials and reduce costs. Since the main machine and the automatic injection unit are separated, a better layout can be combined. Through electrical automation, the injection mode and the molding mode can also be realized, realizing diversified use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the injection mechanism of the injection molding machine of the present invention;

[0020] Figure 2 A top view of the injection mechanism of the injection molding machine of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection between the injection mechanism, the mold clamping mechanism and the control mechanism of the injection molding machine of the present invention;

[0022] Among them, 1. bracket; 2. pre-injection tube; 3. pre-injection cylinder; 4. feeding port; 5. pre-injection cavity; 6. injection tube; 7. injection cylinder; 8. injection cavity; 9. connecting pipe; 10. mold clamping mechanism; 11. control mechanism. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] Example 1

[0026] Reference Figures 1 to 3 , an injection mechanism of an injection molding machine, comprising:

[0027] Bracket 1;

[0028] A pre-injection unit, which is arranged on the bracket 1; the pre-injection unit is used to contain the pre-injection material;

[0029] The injection unit is arranged on the bracket 1 and arranged side by side with the pre-injection unit; the injection unit and the pre-injection unit are connected through a connecting pipe 10, and the pre-injected material in the pre-injection unit is injected into the injection unit through the connecting pipe 10, and the injection unit injects the material into the clamping mechanism 10.

[0030] Through the above technical solution, the pre-injection unit and the injection unit are arranged side by side on the same horizontal line to form a side injection structure, and side injection feeding is carried out to achieve horizontal advancement of materials. Through the side injection structure, the length of the injection nozzle is significantly shortened, and each mold can save raw materials, reduce costs, and improve safety.

[0031] In this embodiment, the pre-injection unit includes a pre-injection barrel 2 and a pre-injection cylinder 3; the pre-injection barrel 2 is connected to the bracket 1; a feeding port 4 is provided on the pre-injection barrel 2; the pre-injection cylinder 3 is connected to the pre-injection barrel 2 to inject the material in the pre-injection barrel 2 into the injection unit.

[0032] Through the above technical solution, the material is added from the feeding port 4, the material is directly pushed and deflated in the pre-injection chamber 5, the density can be adjusted during pushing, and the material is pushed into the injection chamber 8 through the pre-injection cylinder 3, which saves energy and time, is safe and environmentally friendly, and ensures product quality.

[0033] In this embodiment, the interior of the pre-injection cylinder 2 is hollow to form a pre-injection cavity 5; the pre-injection cavity 5 is used to contain the pre-injected material.

[0034] In this embodiment, the output end of the pre-injection cylinder 3 is arranged in the pre-injection chamber 5 to press the pre-injected material in the pre-injection chamber 5 into the injection unit.

[0035] In this embodiment, the injection unit includes an injection barrel 6 and an injection cylinder 7; the injection barrel 6 is connected to the bracket 1 and is arranged side by side with the pre-injection barrel 2; one end of the injection barrel 6 is connected to the pre-injection barrel 2 through a connecting tube 9; a feeding outlet is provided at the other end of the injection barrel 6; the feeding outlet is connected to the clamping mechanism; the injection cylinder 7 is connected to the injection barrel 6, and the injection cylinder 7 injects the material in the injection barrel 6 from the feeding outlet into the clamping mechanism.

[0036] The feeding outlet of the injection cylinder 6 is connected to the mold clamping mechanism 10 , and the mold clamping mechanism 10 is also connected to the control mechanism 11 , and the control mechanism 11 controls the injection of the material in the injection structure and the clamping of the mold clamping mechanism 10 .

[0037] Through the above technical solution, the injection cylinder 7 presses the material in the injection tube 6 out from the feeding outlet, and the pressed material enters the mold clamping mechanism.

[0038] In this embodiment, the interior of the injection barrel 6 is hollow to form an injection cavity 8 ; the injection cavity 8 is connected to the pre-injection cavity 5 via a connecting tube 10 ; and the material in the pre-injection cavity 5 enters the injection cavity 8 via the connecting tube 9 .

[0039] In this embodiment, an electronic ruler is provided in the injection cavity 8 to achieve metered injection.

[0040] Through the above technical solution, the electronic ruler is set in the injection chamber 8, and the displacement of the injection cylinder 7 is accurately controlled by the electronic ruler to achieve metered injection; the pressure in the injection chamber 8 is released through the pre-injection chamber 5, and the pushing and deflation are carried out to adjust the pushing density.

[0041] The working process of the injection mechanism of an injection molding machine provided by the present invention is as follows:

[0042] The material is added into the pre-injection cavity 5 in the pre-injection cylinder 2 from the feeding port 4; the pre-injection cylinder 3 presses out the material in the pre-injection cavity 5 and presses it into the injection cavity 8 in the injection cylinder 6 through the connecting pipe 9; the injection cylinder 7 presses out the material in the injection cavity 8 from the feeding outlet and the pressed material is injected into the clamping mechanism 10 from the feeding outlet.

[0043] The above are only preferred embodiments of the present invention and do not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An injection mechanism of an injection molding machine, characterized in that: include: Bracket; A pre-injection unit, the pre-injection unit is arranged on the bracket; the pre-injection unit is used to contain the pre-injected material; An injection unit is arranged on the bracket and arranged side by side with the pre-injection unit; the injection unit and the pre-injection unit are connected through a connecting pipe, the pre-injected material in the pre-injection unit is injected into the injection unit through the connecting pipe, and the injection unit injects the material into the clamping mechanism.

2. The injection mechanism of the injection molding machine according to claim 1, characterized in that: The pre-injection unit includes a pre-injection barrel and a pre-injection cylinder; the pre-injection barrel is connected to the bracket; a feeding port is provided on the pre-injection barrel; the pre-injection cylinder is connected to the pre-injection barrel, and the pre-injection cylinder injects the material in the pre-injection barrel into the injection unit.

3. The injection mechanism of the injection molding machine according to claim 2, characterized in that: The interior of the pre-injection cylinder is hollow to form a pre-injection cavity; the pre-injection cavity is used to contain the pre-injected material.

4. The injection mechanism of the injection molding machine according to claim 3, characterized in that: The output end of the pre-injection cylinder is arranged in the pre-injection cavity to press the pre-injected material in the pre-injection cavity into the injection unit.

5. The injection mechanism of the injection molding machine according to claim 4, characterized in that: The injection unit includes a syringe and an injection cylinder; the syringe is connected to the bracket and is arranged side by side with the pre-injection cylinder; one end of the syringe is connected to the pre-injection cylinder through the connecting tube; the other end of the syringe is provided with a feeding outlet; the feeding outlet is connected to the clamping mechanism; the injection cylinder is connected to the syringe, and the injection cylinder injects the material in the syringe from the feeding outlet into the clamping mechanism.

6. The injection mechanism of the injection molding machine according to claim 5, characterized in that: The interior of the injection barrel is hollow to form an injection cavity; the injection cavity is connected to the pre-injection cavity through the connecting tube; the material in the pre-injection cavity enters the injection cavity through the connecting tube.

7. The injection mechanism of the injection molding machine according to claim 6, characterized in that: An electronic ruler is arranged in the injection cavity to realize metered injection.

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