Runner structure of injection mold

Abstract

The utility model relates to the related technical field of injection molds, in particular to an injection mold runner structure which comprises a runner, a temperature adjusting mechanism is arranged on the surface of one side of the runner, and a control mechanism is arranged on the surface of the upper portion of the runner. According to the runner structure of the injection mold, through the arrangement of the splitter plate, the heating pipe, the heater, the controller, the nozzles and the sealing coil, when the runner structure is used and the temperature of plastic in the runner needs to be adjusted, firstly, the splitter plate installed in the runner can evenly distribute plastic melt to the nozzles at all injection points, and the situation that a mold cavity is filled unevenly is avoided; and in addition, balanced flowing of the plastic in a mold cavity is facilitated, and product defects caused by uneven flowing are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a runner structure of an injection mold. Background Art

[0002] The runner structure of an injection mold mainly includes a main runner, a sub - runner and a gate. The main runner, also known as the sprue or vertical runner, is the first part that the molten plastic flows through after entering the mold. It connects the nozzle of the injection molding machine with the part in contact with the main runner bushing of the mold until the sub - runner. The sub - runner, also known as the distribution runner or secondary runner, can be further divided into a first sub - runner and a second sub - runner according to the mold design. The design of these runners is crucial for ensuring the dimensional accuracy and production efficiency of plastic products. Therefore, a runner structure of an injection mold is particularly needed to maintain the constant temperature of the plastic melt in the runner.

[0003] Because of the existing runner structures, most of them do not have the function of temperature adjustment. During the molding process of hot - runner molds, the temperature of the plastic melt in the runner system cannot be accurately controlled, thus resulting in poor product quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a runner structure of an injection mold to solve the problem that because of the existing runner structures, most of them do not have the function of temperature adjustment. During the molding process of hot - runner molds, the temperature of the plastic melt in the runner system cannot be accurately controlled, thus resulting in poor product quality as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a runner structure of an injection mold, including a runner. A temperature adjustment mechanism is arranged on one side surface of the runner, and a control mechanism is arranged on the upper surface of the runner.

[0006] The temperature adjustment mechanism includes a manifold plate, heating tubes, a heater, a controller, a nozzle and a sealing coil. The manifold plate is fixedly connected to the inner surface of the runner, the heating tubes are fixedly installed on the inner surface of the runner, one end surface of the heating tubes is fixedly connected to the heater, one side surface of the heater is fixedly connected to the controller, the nozzle is fixedly connected to the lower surface of the runner, and the sealing coil is fixedly connected to one side surface of the nozzle.

[0007] Preferably, the control mechanism includes a valve seat, a filling base material, a valve core, a push rod, a spring, and a pneumatic valve. The upper surface of the flow channel is fixedly installed with a valve seat. The upper surface of the valve seat is fixedly installed with a filling base material. The inner surface of the filling base material is fixedly connected to the valve core. The upper surface of the valve core is fixedly connected to a push rod. A spring is sleeved on one side surface of the push rod. A pneumatic valve is fixedly installed on one side surface of the push rod.

[0008] Preferably, a flow channel is fixedly connected to one side surface of the flow dividing plate. The heating tubes are evenly distributed on one end surface of the heater.

[0009] Preferably, four groups of nozzles are provided. The other end surface of the flow channel is fixedly connected to a heater.

[0010] Preferably, a controller is fixedly connected to the other end surface of the heater. The two end surfaces of the heating tube are fixedly connected to the flow channel and the heater respectively.

[0011] Preferably, a flow channel is fixedly connected to the lower surface of the valve seat. The two side surfaces of the valve core are respectively fixedly connected to the valve seat and the filling base material.

[0012] Preferably, the two side surfaces of the spring are respectively fixedly connected to the pneumatic valve and the push rod. The pneumatic valve

[0013] has its lower surface fixedly connected to the valve seat.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: For the flow channel structure of this injection mold, through the settings of the flow dividing plate, heating tubes, heater, controller, nozzles, and sealing coils, during use, when it is necessary to adjust the temperature of the plastic in the flow channel, first, the flow dividing plate installed inside the flow channel can evenly distribute the plastic melt to each injection point nozzle, avoiding uneven filling of the mold cavity and helping the plastic to flow evenly in the mold cavity, reducing product defects caused by uneven flow. Then, the controller is turned on. The controller can control the heater, and then the heater transfers heat to the heating tubes. The heating tubes can heat the plastic melt in the flow channel, so that the plastic melt is maintained at a constant temperature. Finally, the plastic melt will reach the nozzles at the bottom through the flow dividing plate, and then inject the mold. The sealing coils can seal the connection between the nozzles and the flow channel to prevent melt leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall external structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the temperature adjustment mechanism structure of the present utility model;

[0017] Figure 3This is a schematic structural diagram of the control mechanism of the utility model;

[0018] Figure 4 This is a schematic right view structural diagram of the whole of the utility model.

[0019] In the figure: 1, flow channel; 2, temperature adjustment mechanism; 3, control mechanism; 201, flow dividing plate; 202, heating tube; 203, heater; 204, controller; 205, nozzle; 206, sealing coil; 301, valve seat; 302, filling base material; 303, valve core; 304, push rod; 305, spring; 306, pneumatic valve. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: an injection mold flow channel structure, including a flow channel 1, a temperature adjustment mechanism 2 is provided on one side surface of the flow channel 1, and a control mechanism 3 is provided on the upper surface of the flow channel 1;

[0022] The temperature adjustment mechanism 2 includes a flow splitter plate 201, a heating pipe 202, a heater 203, a controller 204, a nozzle 205, and a sealing coil 206. The inner surface of the runner 1 is fixedly connected with the flow splitter plate 201, the inner surface of the runner 1 is fixedly installed with the heating pipe 202, one end surface of the heating pipe 202 is fixedly connected with the heater 203, one side surface of the heater 203 is fixedly connected with the controller 204, the lower surface of the runner 1 is fixedly connected with the nozzle 205, and one side surface of the nozzle 205 is fixedly connected with the sealing coil 206. Through the settings of the flow splitter plate 201, the heating pipe 202, the heater 203, the controller 204, the nozzle 205, and the sealing coil 206, when in use, when it is necessary to adjust the temperature of the plastic in the runner 1, first, the flow splitter plate 201 installed inside the runner 1 can evenly distribute the plastic melt to each injection point nozzle 205, avoiding uneven filling of the mold cavity, and helping the plastic to flow evenly in the mold cavity, reducing product defects caused by uneven flow. Then, the controller 204 is turned on. The controller 204 can control the heater 203, and then the heater 203 transfers heat to the heating pipe 202. The heating pipe 202 can heat the plastic melt in the runner 1, so that the plastic melt is kept at a constant temperature. Finally, the plastic melt will reach the nozzle 205 at the bottom through the flow splitter plate 201, and then inject the mold. The sealing coil 206 can seal the connection between the nozzle 205 and the runner 1 to prevent melt leakage.

[0023] Further, the control mechanism 3 includes a valve seat 301, a filling base material 302, a valve core 303, a push rod 304, a spring 305, and a pneumatic valve 306. The upper surface of the runner 1 is fixedly installed with the valve seat 301, the upper surface of the valve seat 301 is fixedly installed with the filling base material 302, the inner surface of the filling base material 302 is fixedly connected with the valve core 303, the upper surface of the valve core 303 is fixedly connected with the push rod 304, a spring 305 is sleeved on one side surface of the push rod 304, and a pneumatic valve 306 is fixedly installed on one side surface of the push rod 304. Through the settings of the valve seat 301, the filling base material 302, the valve core 303, the push rod 304, the spring 305, and the pneumatic valve 306, when in use, when it is necessary to control the plastic melt in the runner 1, the plastic melt in the runner 1 will flow towards the pneumatic valve 306. At this time, the spring 305 on one side of the push rod 304 installed inside the pneumatic valve 306 will be subjected to the pressure of the melt and generate an elastic force, which will drive the valve core 303 to move downward. The valve core 303 will move downward in the filling base material 302 and finally move left and right in the valve seat 301. When there is too much melt in the runner, the valve core 303 will cover the valve seat 301 on the runner to prevent the melt from entering the inside of the runner 1, thus avoiding the problem of the internal control system of the runner 1 getting out of balance.

[0024] Furthermore, a runner 1 is fixedly connected to one side surface of the flow splitter plate 201, and the heating tubes 202 are equally spaced on one end surface of the heater 203. Through the setting of the flow splitter plate 201, the plastic melt can be evenly distributed to each injection point nozzle 205, avoiding uneven filling of the mold cavity.

[0025] Furthermore, four groups of nozzles 205 are provided, and a heater 203 is fixedly connected to the other end surface of the runner 1. Through the setting of the nozzles 205, the plastic melt flowing in from the flow splitter plate 201 can be received, and then the mold can be injection-molded.

[0026] Furthermore, a controller 204 is fixedly connected to the other end surface of the heater 203, and the two end surfaces of the heating tubes 202 are fixedly connected to the runner 1 and the heater 203. Through the setting of the controller 204, the heater 203 can be controlled, and then the heater 203 can transfer heat to the heating tubes 202.

[0027] Furthermore, a runner 1 is fixedly connected to the lower surface of the valve seat 301, and the two side surfaces of the valve core 303 are respectively fixedly connected to the valve seat 301 and the filling base material 302. Through the setting of the valve core 303, the valve seat 301 on the runner can be covered, preventing the melt from entering the inside of the runner 1.

[0028] Furthermore, the two side surfaces of the spring 305 are respectively fixedly connected to the pneumatic valve 306 and the push rod 304, and the pneumatic valve 306 is fixedly connected to the valve seat 301 on the lower surface. Through the setting of the spring 305, elastic force can be generated, thereby driving the valve core 303 to move downward.

[0029] Working principle: During use, when it is necessary to adjust the temperature of the plastic in the runner 1, first, the diverter plate 201 installed inside the runner 1 can evenly distribute the plastic melt to each injection point nozzle 205, avoiding uneven filling of the mold cavity and facilitating the balanced flow of the plastic in the mold cavity, reducing product defects caused by uneven flow. Then, the controller 204 is turned on. The controller 204 can control the heater 203, and then the heater 203 transfers heat to the heating pipe 202. The heating pipe 202 can heat the plastic melt in the runner 1, thereby keeping the plastic melt at a constant temperature. Finally, the plastic melt will reach the nozzle 205 at the bottom through the diverter plate 201, and then inject the mold. The sealing coil 206 can seal the connection between the nozzle 205 and the runner 1 to prevent melt leakage. During use, when it is necessary to control the plastic melt in the runner 1, the plastic melt in the runner 1 will flow to the pneumatic valve 306. At this time, the spring 305 on one side of the push rod 304 installed inside the pneumatic valve 306 will be subjected to the pressure of the melt and generate elastic force, thus driving the valve core 303 to move downward. The valve core 303 will move downward in the filling base material 302 and finally move left and right in the valve seat 301. When there is too much melt in the runner, the valve core 303 will cover the valve seat 301 on the runner, preventing the melt from entering the inside of the runner 1, thereby avoiding the problem of the internal control system of the runner 1 getting out of balance.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold runner structure, comprising a runner (1), characterized in that: A temperature regulating mechanism (2) is provided on one side surface of the flow channel (1), and a control mechanism (3) is provided on the upper surface of the flow channel (1); The temperature regulating mechanism (2) comprises a flow dividing plate (201), a heating tube (202), a heater (203), a controller (204), a nozzle (205) and a sealing coil (206); the flow dividing plate (201) is fixedly connected to the inner surface of the flow channel (1); the heating tube (202) is fixedly installed on the inner surface of the flow channel (1); one end surface of the heating tube (202) is fixedly connected to the heater (203); one side surface of the heater (203) is fixedly connected to the controller (204); the lower surface of the flow channel (1) is fixedly connected to the nozzle (205); and one side surface of the nozzle (205) is fixedly connected to the sealing coil (206).

2. The injection mold runner structure according to claim 1, characterized in that: The control mechanism (3) comprises a valve seat (301), a filling base material (302), a valve core (303), a push rod (304), a spring (305) and a pneumatic valve (306); the valve seat (301) is fixedly mounted on the upper surface of the flow channel (1); the filling base material (302) is fixedly mounted on the upper surface of the valve seat (301); the valve core (303) is fixedly connected to the inner surface of the filling base material (302); the push rod (304) is fixedly connected to the upper surface of the valve core (303); a spring (305) is sleeved on one side surface of the push rod (304); and the pneumatic valve (306) is fixedly mounted on one side surface of the push rod (304).

3. The injection mold runner structure according to claim 1, characterized in that: A flow channel (1) is fixedly connected to one side surface of the flow divider plate (201), and the heating tubes (202) are distributed at equal intervals on one end surface of the heater (203).

4. The injection mold runner structure according to claim 1, characterized in that: Four groups of nozzles (205) are provided, and a heater (203) is fixedly connected to the other end surface of the flow channel (1).

5. The injection mold runner structure according to claim 1, characterized in that: The other end surface of the heater (203) is fixedly connected to a controller (204), and the two end surfaces of the heating tube (202) are fixedly connected to the flow channel (1) and the heater (203).

6. The injection mold runner structure according to claim 2, characterized in that: The lower surface of the valve seat (301) is fixedly connected to the flow channel (1), and the two side surfaces of the valve core (303) are respectively fixedly connected to the valve seat (301) and the filling base material (302).

7. The injection mold runner structure according to claim 2, characterized in that: The surfaces on both sides of the spring (305) are respectively fixedly connected to a pneumatic valve (306) and a push rod (304), and the lower surface of the pneumatic valve (306) is fixedly connected to a valve seat (301).

Images