A glue injection mechanism for an injection molding machine

Abstract

The utility model discloses a glue injection mechanism for an injection molding machine, comprising a fixed base, a glue injection cylinder and a feed hopper; the glue injection cylinder is fixedly installed on one side of the top of the fixed base, a servo motor is fixedly installed on the other side of the top of the fixed base, a transmission shaft is installed on the servo motor near one side of the glue injection cylinder, a feed hopper is fixedly welded and installed on one side of the top of the glue injection cylinder, and the feed hopper is interconnected with the inside of the glue injection cylinder; a first bevel gear is fixedly installed on the transmission shaft, a support is fixedly installed on one side of the feed hopper, and a rotating rod is vertically rotatably installed in the support. The utility model can drive the auger blades inside the feed hopper to rotate synchronously while the servo motor drives the auger to inject, so that the uniform speed feeding of the raw materials inside the feed hopper can be realized, and the accumulation and blockage of the raw materials during the feeding process can be effectively prevented, and there is no need to set up an additional motor for driving, and the production cost and the use cost will not increase too much.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a glue injection mechanism of an injection molding machine. 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. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat plastics and apply high pressure to the molten plastics to make it eject and fill the mold cavity. The injection system is one of the most important components of the injection molding machine. Generally, there are three main forms: plunger type, screw type, and screw pre-plastic plunger injection type. The most widely used is the screw type. Its function is to heat and plasticize a certain amount of plastic within a specified time in one cycle of the injection molding machine, and then inject the molten plastic into the mold cavity through the screw under a certain pressure and speed;

[0003] However, the current injection molding machine injection mechanism often feeds plastic raw materials naturally into the hopper by gravity, and this feeding method will cause uneven speed and easy clogging, which often affects the injection molding efficiency and quality.

[0004] Therefore, how to provide a glue injection mechanism for an injection molding machine is a problem that those skilled in the art need to solve urgently. Utility Model Content

[0005] One purpose of the utility model is to provide a glue injection mechanism for an injection molding machine. The utility model can drive the auger to inject while driving the auger blades inside the feed hopper to rotate synchronously while using a servo motor. Therefore, uniform feeding of raw materials inside the feed hopper can be achieved, and accumulation and blockage of raw materials during the feeding process can be effectively prevented. There is no need to set up an additional motor for driving, and the production cost and the use cost will not increase too much.

[0006] According to an embodiment of the utility model, a glue injection mechanism of an injection molding machine includes a fixed base, a glue injection cylinder and a feed hopper;

[0007] The injection molding cylinder is fixedly installed on one side of the top of the fixed base, a servo motor is fixedly installed on the other side of the top of the fixed base, a transmission shaft is installed on the servo motor near the side of the injection molding cylinder, a feed hopper is fixedly welded and installed on one side of the top of the injection molding cylinder, and the feed hopper is connected to the inside of the injection molding cylinder;

[0008] A first bevel gear is fixedly mounted on the transmission shaft, a support is fixedly mounted on one side of the feed hopper, a rotating rod is vertically and rotatably mounted in the support, a second bevel gear is fixedly mounted on the bottom of the rotating rod, the second bevel gear is meshed with the first bevel gear, a first pulley is fixedly welded on the top of the rotating rod, an L-shaped bracket is fixedly welded on the top of the support and close to one side of the feed hopper, a movable shaft is vertically and rotatably mounted in the L-shaped bracket, an auger blade is fixedly welded below the movable shaft, a second pulley is fixedly welded on the top of the movable shaft, and belts are mounted on the second pulley and the first pulley.

[0009] Optionally, the other end of the transmission shaft passes through the injection cylinder and is transmission-connected to the auger inside the injection cylinder.

[0010] Optionally, a plurality of groups of electric heaters are sleeved and installed on the outer wall of the injection molding cylinder, and the plurality of groups of electric heaters are equidistantly distributed and installed on the injection molding cylinder.

[0011] Optionally, an injection nozzle is fixedly mounted on a side of the injection cylinder away from the servo motor, and the injection nozzle is communicated with the interior of the injection cylinder.

[0012] Optionally, the auger blade is installed at the connection point between the inside of the feed hopper and the injection cylinder.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can drive the first bevel gear to rotate while the servo motor drives the auger inside the injection molding cylinder to rotate, and the first bevel gear can drive the second bevel gear, the rotating rod and the first pulley to rotate, and then the second pulley and the movable shaft can be driven to rotate through the belt, at which time the auger blades at the bottom of the movable shaft can be driven to rotate to uniformly transport the raw materials in the feed hopper to the injection molding cylinder, which can ensure that the raw materials can actively and stably enter the injection molding cylinder, prevent the situation where the raw materials are accumulated and blocked to cause the material to be discharged unsmoothly, ensure the stability of the injection molding, and the injection molding and material discharge can be carried out synchronously by starting the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a front view structural diagram of a glue injection mechanism of an injection molding machine proposed by the utility model;

[0017] Figure 2 The utility model is a schematic diagram of a top view of the structure of an injection molding machine capable of injecting glue.

[0018] In the figure: 1. fixed base; 2. injection cylinder; 3. servo motor; 4. transmission shaft; 5. first bevel gear; 6. electric heater; 7. injection nozzle; 8. feed hopper; 9. support; 10. rotating rod; 11. second bevel gear; 12. first pulley; 13. L-shaped bracket; 14. movable shaft; 15. second pulley; 16. belt; 17. auger blade. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] refer to Figure 1-2 , a glue injection mechanism of an injection molding machine, comprising a fixed base 1, a glue injection cylinder 2 and a feed hopper 8;

[0021] The injection cylinder 2 is fixedly installed on one side of the top of the fixed base 1, and a servo motor 3 is fixedly installed on the other side of the top of the fixed base 1. The servo motor 3 is installed with a transmission shaft 4 near one side of the injection cylinder 2;

[0022] A feed hopper 8 is fixedly welded and installed on one side of the top of the injection cylinder 2, and the feed hopper 8 is connected to the inside of the injection cylinder 2;

[0023] The other end of the transmission shaft 4 passes through the injection tube 2 and is connected to the internal auger of the injection tube 2;

[0024] Secondly, a plurality of groups of electric heaters 6 are installed on the outer wall of the injection cylinder 2, and the plurality of groups of electric heaters 6 are installed on the injection cylinder 2 at equal distances;

[0025] In addition, an injection nozzle 7 is fixedly installed on the side of the injection cylinder 2 away from the servo motor 3, and the injection nozzle 7 is connected to the inside of the injection cylinder 2;

[0026] In this embodiment, plastic particles can be fed into the feed hopper 8, and the plastic particles can enter the injection molding barrel 2 through the feed hopper 8. Then, the transmission shaft 4 can be driven to rotate by the servo motor 3, and then the transmission shaft 4 can drive the auger inside the injection molding barrel 2 to rotate, so that the plastic particles are driven by the rotating auger to be transported from right to left in the injection molding barrel 2, and are heated and melted by the electric heater 6 during the transportation process. Finally, the melted plastic can be injected into the mold through the injection nozzle 7 to complete the injection molding work.

[0027] refer to Figure 1-2A first bevel gear 5 is fixedly mounted on the transmission shaft 4, a support 9 is fixedly mounted on one side of the feed hopper 8, a rotating rod 10 is vertically and rotatably mounted in the support 9, a second bevel gear 11 is fixedly mounted on the bottom of the rotating rod 10, the second bevel gear 11 is meshed with the first bevel gear 5, a first pulley 12 is fixedly welded on the top of the rotating rod 10, an L-shaped bracket 13 is fixedly welded on the top of the support 9 and close to the side of the feed hopper 8, a movable shaft 14 is vertically and rotatably mounted in the L-shaped bracket 13, and an auger blade 17 is fixedly welded below the movable shaft 14;

[0028] The auger blade 17 is installed at the connection between the inside of the feed hopper 8 and the injection tube 2;

[0029] Secondly, a second pulley 15 is fixedly welded on the top of the movable shaft 14, and a belt 16 is installed on the second pulley 15 and the first pulley 12;

[0030] In this embodiment, when the servo motor 3 starts working, it can drive the first bevel gear 5 to rotate, and the first bevel gear 5 can drive the second bevel gear 11, the rotating rod 10 and the first pulley 12 to rotate. The first pulley 12 can drive the second pulley 15 and the movable shaft 14 to rotate through the belt 16. At this time, the auger blade 17 under the movable shaft 14 can be rotated to transport the plastic particles in the feed hopper 8 downward at a uniform speed, so that the plastic particles can passively enter the injection cylinder 2 to prevent the plastic particles from being blocked and affecting the smoothness of material discharge.

[0031] It is understandable that the servo motor and the electric heater in the present invention can be driven by an external power cord, and the servo motor and the electric heater can be controlled by programming using a main control system, and the control principle can be realized by existing control technology. The models of the servo motor and the electric heater are not limited to a single type and can be any type currently available on the market that is suitable for the present invention.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A glue injection mechanism for an injection molding machine, characterized in that: It comprises a fixed base (1), a glue injection cylinder (2) and a feed hopper (8); The injection molding cylinder (2) is fixedly mounted on one side of the top of the fixed base (1), a servo motor (3) is fixedly mounted on the other side of the top of the fixed base (1), a transmission shaft (4) is installed on the side of the servo motor (3) close to the injection molding cylinder (2), a feed hopper (8) is fixedly welded on one side of the top of the injection molding cylinder (2), and the feed hopper (8) is connected to the inside of the injection molding cylinder (2); A first bevel gear (5) is fixedly mounted on the transmission shaft (4); a support (9) is fixedly mounted on one side of the feed hopper (8); a rotating rod (10) is vertically and rotatably mounted in the support (9); a second bevel gear (11) is fixedly mounted on the bottom of the rotating rod (10); the second bevel gear (11) and the first bevel gear (5) are meshed with each other; a first pulley (12) is fixedly welded on the top of the rotating rod (10); an L-shaped bracket (13) is fixedly welded on the top of the support (9) and close to the side of the feed hopper (8); a movable shaft (14) is vertically and rotatably mounted in the L-shaped bracket (13); a screw blade (17) is fixedly welded below the movable shaft (14); a second pulley (15) is fixedly welded on the top of the movable shaft (14); a belt (16) is mounted on the second pulley (15) and the first pulley (12).

2. The injection molding machine injection mechanism according to claim 1, characterized in that: The other end of the transmission shaft (4) passes through the injection cylinder (2) and is transmission-connected to the auger inside the cylinder.

3. The injection molding machine injection mechanism according to claim 1, characterized in that: The outer wall of the injection molding cylinder (2) is sleeved with a plurality of groups of electric heaters (6), and the plurality of groups of electric heaters (6) are equidistantly distributed and installed on the injection molding cylinder (2).

4. The injection molding machine injection mechanism according to claim 1, characterized in that: An injection nozzle (7) is fixedly mounted on the side of the injection cylinder (2) away from the servo motor (3), and the injection nozzle (7) is communicated with the interior of the injection cylinder (2).

5. The injection molding machine injection mechanism according to claim 1, characterized in that: The auger blade (17) is installed at the place where the inside of the feed hopper (8) is connected to the injection cylinder (2).

Images