Feeding mechanism of injection molding machine for plastic products

Abstract

The utility model discloses a feeding mechanism of an injection molding machine for plastic products, comprising: an injection molding machine main body, one side of which is provided with an injection molding screw; through cooperation of an electric heating wire and an exhaust fan, when plastic particles are added into a heat conduction inner shell, the exhaust fan can extract heat generated by the electric heating wire to the interior of the heat conduction inner shell, the plastic particles are dried through the heat of the electric heating wire, and the plastic particles are dried while the plastic particles are dried. The motor can drive the poke rod to rotate through transmission connection between the belt pulley and the transmission belt to poke the plastic particles so as to increase the drying uniformity of the plastic particles, so that the plastic particles are dried while being fed, product defects caused by moisture in the plastic particles are avoided, the production cycle is shortened, and the production efficiency is improved. And the production efficiency is obviously improved.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding machine feeding, and in particular to a feeding mechanism of an injection molding machine for plastic products. Background Art

[0002] The injection molding machine's feed mechanism is an important component used to introduce plastic pellets into the machine, ensuring that the plastic pellets can enter the barrel of the injection molding machine smoothly and efficiently for melting and injection molding. However, since plastic pellets are naturally hygroscopic and can absorb moisture from the air, the molecular structure of these materials easily interacts with moisture, resulting in an increase in moisture content in the pellets. When the plastic pellets are directly heated and melted, the moisture inside them will evaporate rapidly, forming bubbles. These bubbles will remain inside the product during injection molding, causing surface blemishes or internal defects, affecting appearance and performance. Therefore, the plastic pellets need to be dried before being added to the barrel of the injection molding machine.

[0003] In related technologies, in order to solve the problem of product defects caused by high moisture content in plastic particles, workers need to pre-dry the plastic particles in an external drying device before the injection molding machine is operated, so as to solve the problem of product defects caused by moisture in the plastic particles.

[0004] However, due to the large amount of plastic particles used, the injection molding machine needs to frequently transfer the plastic particles in the dryer to the injection molding machine during operation, which not only prolongs the production cycle but also significantly reduces production efficiency.

[0005] Therefore, those skilled in the art provide a feeding mechanism for an injection molding machine for plastic products to solve the problems raised in the above background technology. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the present application provides a feeding mechanism for an injection molding machine for plastic products.

[0007] The present application provides a feeding mechanism for an injection molding machine for plastic products, which adopts the following technical solution:

[0008] A feeding mechanism of an injection molding machine for plastic products, comprising:

[0009] An injection molding machine body, with an injection molding screw installed on one side of the injection molding machine body;

[0010] A feeding assembly is provided on the injection molding screw and includes a heat-insulating outer shell fixed to one side of the top of the injection molding screw, a heat-conducting inner shell is provided inside the heat-insulating outer shell, and a circulation shell fixedly installed at the bottom between the heat-insulating outer shell and the heat-conducting inner shell, an electric heating wire is installed on the top of the circulation shell, and a plurality of exhaust fans are provided between the circulation shell and the heat-insulating outer shell to extract heat from the electric heating wire into the interior of the heat-conducting inner shell, and a connecting pipe is connected to the bottom of the heat-conducting inner shell, and the bottom end of the connecting pipe passes through the heat-insulating outer shell and is connected to one side of the top of the injection molding screw; and

[0011] The auxiliary component is arranged on the feeding component and includes a vertical rod arranged inside the heat-conducting inner shell. The outer wall of the vertical rod is equipped with a toggle rod for toggling the plastic particles inside the heat-conducting inner shell.

[0012] By adopting the above technical solution, the plastic particles can be dried when added to avoid the raw materials from sticking together due to moisture or agglomeration, which may lead to blockage of the feed port.

[0013] Preferably, a motor is installed on one side of the heat-insulating shell, and pulleys are installed on the output end of the motor and the top of the outer wall of the vertical rod. The surfaces of the two pulleys are both covered with transmission belts, and the two pulleys are connected by the transmission belt.

[0014] By adopting the above technical solution, the plastic particles can be moved while they are drying, so as to improve the drying speed and the drying uniformity.

[0015] Preferably, a guide shell is installed on the top of the injection molding machine body, the top of the heat-conducting inner shell is fixedly connected to the bottom of the guide shell, a support seat is fixedly installed inside the guide shell, and the top end of the vertical rod passes through the support seat and is rotatably connected to it.

[0016] By adopting the above technical solution, the vertical rod can be stably supported to avoid shaking of the vertical rod during rotation, which may affect the addition of plastic particles.

[0017] Preferably, the bottom end of the vertical rod passes through the heat-conducting inner shell and extends to the inside of the connecting pipe, and a spiral conveying blade is installed on the outer wall of the vertical rod located inside the connecting pipe.

[0018] By adopting the above technical solution, the spiral conveying blades can be used to convey the plastic particles synchronously when the toggle rod toggles the plastic particles, thereby avoiding the situation where the plastic particles clog the connecting pipe and affect the addition of the plastic particles.

[0019] Preferably, two through holes are provided on the top of one side of the heat-insulating outer shell and the heat-conducting inner shell, and the transmission belt utilizes the through holes to transmit and connect the two pulleys.

[0020] Preferably, a solenoid valve is installed at the connection point between the connecting pipe and the injection screw to control the connection and closing of the spiral conveying blade and the injection screw.

[0021] In summary, this application has the following beneficial technical effects:

[0022] 1. The feeding mechanism of the injection molding machine for plastic products utilizes the cooperation between the electric heating wire and the exhaust fan. When the plastic particles are added to the interior of the heat-conducting inner shell, the exhaust fan can extract the heat generated by the electric heating wire into the interior of the heat-conducting inner shell, and use the heat of the electric heating wire to dry the plastic particles. While the plastic particles are drying, the motor can use the transmission connection between the pulley and the transmission belt to drive the toggle rod to rotate, to toggle the plastic particles, so as to increase the uniformity of the plastic particles when drying, thereby achieving the drying of the plastic particles while feeding, while avoiding product defects caused by moisture in the plastic particles, reducing the production cycle and significantly improving production efficiency.

[0023] 2. The feeding mechanism of the injection molding machine for plastic products rotates simultaneously with the vertical rod and the toggle rod, so as to further improve the smoothness of plastic particles during addition and avoid blockage of the connecting pipe, which affects the addition of plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a feeding mechanism of an injection molding machine for plastic products in an embodiment of the present application;

[0025] Figure 2 This is a schematic cross-sectional view of a heat-insulating housing in a feeding mechanism of an injection molding machine for plastic products according to an embodiment of the present application;

[0026] Figure 3 This is a schematic cross-sectional view of a heat-conducting inner shell in a feeding mechanism of an injection molding machine for plastic products according to an embodiment of the present application;

[0027] Figure 4 It is a feeding mechanism of a plastic product injection molding machine in the embodiment of the present application. Figure 3 Enlarged view of point A.

[0028] Explanation of the accompanying symbols: 1. Injection molding machine body; 11. Injection molding screw; 2. Feed assembly; 21. Heat-insulating outer shell; 22. Heat-conducting inner shell; 23. Circulation shell; 24. Electric heating wire; 25. Exhaust fan; 26. Connecting pipe; 27. Guide shell; 28. Support seat; 3. Auxiliary assembly; 31. Vertical rod; 32. Toggle rod; 33. Motor; 34. Pulley; 35. Transmission belt; 36. Spiral conveying blade. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The embodiment of the present application discloses a feeding mechanism of an injection molding machine for plastic products. Figure 1-4 , a feeding mechanism of an injection molding machine for plastic products, comprising:

[0031] An injection molding machine body 1, with an injection molding screw 11 installed on one side of the injection molding machine body 1;

[0032] Reference Figure 2 , the feeding assembly 2 is arranged on the injection screw 11 and includes a heat-insulating outer shell 21 fixed to one side of the top of the injection screw 11, a heat-conducting inner shell 22 is arranged inside the heat-insulating outer shell 21, and a circulation shell 23 fixedly installed at the bottom between the heat-insulating outer shell 21 and the heat-conducting inner shell 22, an electric heating wire 24 is installed on the top of the circulation shell 23, and a plurality of exhaust fans 25 are arranged between the circulation shell 23 and the heat-insulating outer shell 21 to extract the heat of the electric heating wire 24 into the interior of the heat-conducting inner shell 22, and the bottom of the heat-conducting inner shell 22 is connected with a connecting pipe 26, the bottom end of the connecting pipe 26 passes through the heat-insulating outer shell 21 and is connected to one side of the top of the injection screw 11; the top of the injection molding machine body 1 is connected and installed with a guide shell 27, the top of the heat-conducting inner shell 22 is fixedly connected to the bottom of the guide shell 27, and the inside of the guide shell 27 is fixedly installed with a support seat 28, and the top of the vertical rod 31 passes through the support seat 28 and is rotatably connected thereto;

[0033] When the plastic particles are added to the interior of the heat-conducting inner shell 22 through the guide shell 27, the electric heating wire 24 is synchronously driven to work, and the electric heating wire 24 generates heat between the heat-insulating outer shell 21 and the heat-conducting inner shell 22. The exhaust fan 25 is used to extract the heat of the electric heating wire 24, so that the heat enters the interior of the heat-conducting inner shell 22 to dry the plastic particles. The exhaust fan 25 passes through the outside of the heat-insulating outer shell 21 and can simultaneously discharge the heat containing moisture in the heat-conducting inner shell 22.

[0034] Please continue to refer to Figure 2 , two through holes are provided on the top of one side of the heat-insulating outer shell 21 and the heat-conducting inner shell 22, and the transmission belt 35 uses the through holes to transmit and connect the two pulleys 34;

[0035] The transmission belt 35 is installed through the two through holes, which can avoid the risk of the transmission belt 35 breaking due to friction between the transmission belt 35 and the heat-insulating outer shell 21 and the heat-conducting inner shell 22;

[0036] Reference Figure 3 as well as Figure 4, auxiliary component 3, the auxiliary component 3 is arranged on the feeding component 2, and includes a vertical rod 31 arranged inside the heat-conducting inner shell 22, and the outer wall of the vertical rod 31 is installed with a toggle rod 32 for toggling the plastic particles inside the heat-conducting inner shell 22; a motor 33 is installed on one side of the heat-insulating outer shell 21, and pulleys 34 are installed on the output end of the motor 33 and the top of the outer wall of the vertical rod 31. The surfaces of the two pulleys 34 are both provided with a transmission belt 35, and the two pulleys 34 are connected by the transmission belt 35;

[0037] The motor 33 drives a pulley 34 to rotate, and the two pulleys 34 are connected through the transmission belt 35, which can synchronously drive the vertical rod 31 and the toggle rod 32 to rotate, to toggle the material inside the heat-conducting inner shell 22 when it is drying, so that the plastic particles can further improve the drying uniformity when drying.

[0038] Please continue to refer to Figure 3 The bottom end of the vertical rod 31 passes through the heat-conducting inner shell 22 and extends to the inside of the connecting pipe 26. The vertical rod 31 is located on the outer wall of the connecting pipe 26 and is equipped with a spiral conveying blade 36;

[0039] As the vertical rod 31 rotates, the spiral conveying blades 36 at the bottom of its outer wall rotate along with the rotation of the vertical rod 31 , and the dried plastic particles are conveyed to the interior of the injection screw 11 by utilizing the shape of the spiral conveying blades 36 .

[0040] A solenoid valve is installed at the connection point between the connecting pipe 26 and the injection screw 11 to control the connection and closing of the spiral conveying blade 36 and the injection screw 11.

[0041] The implementation principle of the feeding mechanism of an injection molding machine for plastic products in the embodiment of the present application is as follows: plastic particles are added to the interior of the heat-conducting inner shell 22 through the guide shell 27, and the motor 33 and the electric heating wire 24 are driven synchronously to work. The electric heating wire 24 generates heat between the heat-insulating outer shell 21 and the heat-conducting inner shell 22, and the exhaust fan 25 is used to extract the heat of the electric heating wire 24, so that the heat enters the interior of the heat-conducting inner shell 22 to dry the plastic particles. At the same time, the exhaust fan 25 synchronously discharges the heat containing moisture in the heat-conducting inner shell 22. When the motor 33 is working, the transmission connection between the pulley 34 and the transmission belt 35 is used to drive the vertical rod 31 and the toggle rod 32 to rotate synchronously, to toggle the plastic particles inside the heat-conducting inner shell 22, and while the vertical rod 31 and the toggle rod 32 rotate, the spiral conveying blades 36 inside the connecting tube 26 rotate synchronously with the vertical rod 31 to convey the plastic particles to the interior of the injection molding screw 11.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A feeding mechanism for an injection molding machine for plastic products, characterized in that: include: An injection molding machine body (1), wherein an injection molding screw (11) is installed on one side of the injection molding machine body (1); A feeding assembly (2) is arranged on the injection screw (11) and includes a heat-insulating outer shell (21) fixed to one side of the top of the injection screw (11), a heat-conducting inner shell (22) is arranged inside the heat-insulating outer shell (21), and a circulation shell (23) fixedly installed at the bottom between the heat-insulating outer shell (21) and the heat-conducting inner shell (22), an electric heating wire (24) is installed on the top of the circulation shell (23), and a plurality of exhaust fans (25) are arranged between the circulation shell (23) and the heat-insulating outer shell (21) to extract the heat of the electric heating wire (24) into the interior of the heat-conducting inner shell (22), and a connecting pipe (26) is connected to the bottom of the heat-conducting inner shell (22), and the bottom end of the connecting pipe (26) passes through the heat-insulating outer shell (21) and is connected to one side of the top of the injection screw (11); as well as An auxiliary component (3) is arranged on the feed component (2) and includes a vertical rod (31) arranged inside the heat-conducting inner shell (22). The outer wall of the vertical rod (31) is equipped with a toggle rod (32) for toggling the plastic particles inside the heat-conducting inner shell (22).

2. The feeding mechanism of the injection molding machine for plastic products according to claim 1, characterized in that: A motor (33) is installed on one side of the heat-insulating shell (21), and pulleys (34) are installed on the output end of the motor (33) and the top of the outer wall of the vertical rod (31). The surfaces of the two pulleys (34) are both sleeved with a transmission belt (35), and the two pulleys (34) are connected to each other through the transmission belt (35).

3. The feeding mechanism of the injection molding machine for plastic products according to claim 2, characterized in that: The top of the injection molding machine body (1) is connected to a guide shell (27), the top of the heat-conducting inner shell (22) is fixedly connected to the bottom of the guide shell (27), a support seat (28) is fixedly installed inside the guide shell (27), and the top end of the vertical rod (31) passes through the support seat (28) and is rotatably connected thereto.

4. The feeding mechanism of the injection molding machine for plastic products according to claim 2, characterized in that: The bottom end of the vertical rod (31) passes through the heat-conducting inner shell (22) and extends to the inside of the connecting pipe (26). The vertical rod (31) is located on the outer wall inside the connecting pipe (26) and is equipped with a spiral conveying blade (36).

5. The feeding mechanism of the injection molding machine for plastic products according to claim 2, characterized in that: Two through holes are provided on the top of one side of the heat-insulating outer shell (21) and the heat-conducting inner shell (22), and the transmission belt (35) utilizes the through holes to perform transmission connection on the two pulleys (34).

6. The feeding mechanism of the injection molding machine for plastic products according to claim 5, characterized in that: A solenoid valve is installed at the connection point between the connecting pipe (26) and the injection screw (11) to control the connection and closing of the spiral conveying blade (36) and the injection screw (11).

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