Feeding structure for manufacturing injection molding light guide plate

Abstract

The utility model provides a feeding structure for manufacturing an injection molding light guide plate, which relates to the technical field of light guide plate production and comprises an injection molding machine body, a blanking hopper arranged at the top of the injection molding machine body, a weighing assembly arranged at the top of the blanking hopper and used for weighing raw materials in the blanking hopper, and a drying assembly arranged on one side of the outer end of the blanking hopper and used for drying the raw materials in the blanking hopper. The drying device is used for drying raw materials in the discharging hopper. According to the feeding structure for manufacturing the injection molding light guide plate, light guide plate raw materials in the discharging hopper can be weighed in real time through the weighing assembly, workers can conveniently and quantitatively feed the light guide plate raw materials in the discharging hopper into the injection molding machine body, and the light guide plate raw materials in the discharging hopper can be dried through the drying assembly; and the finished product effect of the light guide plate is prevented from being influenced by high humidity of light guide plate raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of light guide plate production, in particular to a material feeding structure for manufacturing injection-molded light guide plates. Background Art

[0002] The light guide plate is a transparent thin plate material designed and manufactured using optical principles. Its main function is to evenly guide and diffuse the light emitted by a point or line light source to a large flat area, thereby achieving an efficient and uniform surface light source effect. An injection molding machine is required during the injection molding production process of the light guide plate. However, existing injection molding machines are insufficient in removing dust from the raw materials when unloading the raw materials used for the light guide plate.

[0003] In order to solve the above problems, the publication number CN210758853U discloses "a feeding mechanism for injection molding of light guide plates". Through the designed dust suction mechanism, the dust in the raw materials is sucked in through the dust suction pipe and discharged through the dust outlet pipe, which reduces the dust falling into the injection molding machine body. The setting of the filter net allows the dust to be sucked in, blocking the solid raw material particles from being sucked into the dust suction pipe. However, the device still has certain defects in actual use. For example, the device does not have a drying function, and cannot dehumidify some plastic raw materials with strong hygroscopicity, which may affect the finished product effect of the light guide plate. In addition, the device does not have the effect of quantitative feeding, and the staff cannot know how much light guide plate raw material in the barrel enters the injection molding machine. Utility Model Content

[0004] The utility model aims to solve the shortcomings existing in the background technology and provide a feeding structure for manufacturing injection molded light guide plates. The weighing component is used to conveniently feed the light guide plate raw materials in the lower hopper into the interior of the injection molding machine body in a quantitative manner, and the drying component is used to conveniently dry the light guide plate raw materials in the lower hopper.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding structure for injection molding light guide plate manufacturing, comprising: an injection molding machine body, a lower hopper is arranged on the top of the injection molding machine body, a weighing assembly is arranged on the top of the lower hopper for weighing the raw materials in the lower hopper, and a drying assembly is arranged on one side of the outer end of the lower hopper for drying the raw materials in the lower hopper.

[0006] Optionally, the weighing assembly includes: vertical plates arranged on both sides of the outer end of the lower hopper, a weighing sensor installed on the top of the vertical plates, a top plate arranged on the top of the weighing sensor, and connecting plates connected to both sides of the bottom of the top plate, one end of the connecting plate is connected to the lower hopper, a horizontal plate is connected to the bottom of the vertical plate, a feed pipe is connected to the top of the injection molding machine body, both sides of the outer end of the feed pipe are respectively connected to the horizontal plates, and a display screen is installed on one side of the outer end of the lower hopper, wherein the weighing assembly is used to weigh the light guide plate raw material in the lower hopper.

[0007] Optionally, the drying component includes: two support seats installed on the top of the injection molding machine body, an air pump a installed on the top of one of the support seats, an air supply pipe connected to one side of the outer end of the air pump a, and an electric heating wire installed inside the air supply pipe, one side of the outer end of the air pump a is connected to an air supply pipe, one end of the air supply pipe is connected to the lower hopper, and solenoid valves are installed on both sides of the outer end of the lower hopper, an air pump b is installed on the top of one of the support seats, one side of the outer end of the air pump b is connected to an air inlet pipe, one end of the air inlet pipe is connected to the lower hopper, and the other side of the outer end of the air pump b is connected to an air outlet pipe, wherein the drying component is used to dry the light guide plate raw material in the lower hopper.

[0008] Optionally, an electric control valve is installed inside the lower hopper, a feed hopper is connected to the bottom of the top plate, and a feed port is opened on the top of the top plate, wherein the feed hopper and the feed port are used to add light guide plate raw materials into the lower hopper.

[0009] The utility model has the advantage that the light guide plate raw materials in the lower hopper can be weighed in real time through the weighing component, which is convenient for the staff to feed the light guide plate raw materials in the lower hopper into the injection molding machine body in a quantitative manner, and the light guide plate raw materials in the lower hopper can be dried through the drying component to avoid the high humidity of the light guide plate raw materials affecting the finished product effect of the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Figure 2 It is a sectional view of the overall structure of the utility model.

[0012] Figure 3 It is a schematic diagram of the top plate structure of the utility model.

[0013] Figure 4 It is a schematic diagram of the structure of the feeding hopper of the utility model.

[0014] Figure 5 For the utility model Figure 2 Enlarged view of point A in .

[0015] Figure 6 For the utility model Figure 2 Enlarged view of point B in .

[0016] Figure 1-6In: 1-injection molding machine body; 101-lower hopper; 2-vertical plate; 201-weighing sensor; 202-top plate; 203-connecting plate; 3-horizontal plate; 301-feeding pipe; 302-display screen; 4-support seat; 401-vacuum pump a; 402-air supply pipe; 403-heating wire; 5-vacuum pipe; 501-solenoid valve; 6-vacuum pump b; 601-air inlet pipe; 602-air outlet pipe; 7-electrically controlled valve; 701-feeding hopper; 702-feeding port. DETAILED DESCRIPTION

[0017] The present application is described in detail below with reference to the accompanying drawings and specific implementation methods. Example

[0018] See also Figure 1-6 In this embodiment, a feeding structure for manufacturing an injection molded light guide plate is provided, including: an injection molding machine body 1, a lower hopper 101 is arranged on the top of the injection molding machine body 1, a weighing component is arranged on the top of the lower hopper 101, and is used to weigh the raw materials in the lower hopper 101; a drying component is arranged on one side of the outer end of the lower hopper 101, and is used to dry the raw materials in the lower hopper 101.

[0019] Among them, the weighing component includes: vertical plates 2 arranged on both sides of the outer end of the lower hopper 101, a weighing sensor 201 installed on the top of the vertical plate 2, a top plate 202 arranged on the top of the weighing sensor 201, and a connecting plate 203 connected to both sides of the bottom of the top plate 202. One end of the connecting plate 203 is connected to the lower hopper 101. When the light guide plate raw material is located in the lower hopper 101, since the lower hopper 101 is connected to the top plate 202 through the connecting plate 203, and the top plate 202 is located on the top of the weighing sensor 201, the weighing sensor 201 can weigh the light guide plate raw material inside the lower hopper 101, and can accurately know the weight of the light guide plate raw material discharged from the lower hopper 101, so as to quantitatively feed the light guide plate raw material to the inside of the injection molding machine body 1.

[0020] The model of the weighing sensor 201 is MDBD-25T, and the working principle of the weighing sensor 201 is mainly based on the strain effect. Its core components include an elastomer, a strain gauge and a measuring circuit. Specifically, the weighing sensor is composed of four strain resistors, which are attached to the semicircular vias of the sensor. Since the vias are thin, they are easily deformed under the action of external forces, resulting in changes in the resistance value. These resistors are connected into a bridge circuit. In the absence of pressure, the bridge is balanced and the output is zero pressure difference. When subjected to pressure, the resistance value changes, causing the bridge to lose balance and generate a voltage difference. This voltage difference is received by the analog input terminal of the chip, and the chip converts it into a digital signal and sends it to the microprocessor for processing, directly displaying the weight data.

[0021] Among them, the bottom of the vertical plate 2 is connected to the horizontal plate 3, the top of the injection molding machine body 1 is connected to the feed pipe 301, the two sides of the outer end of the feed pipe 301 are respectively connected to the horizontal plate 3, and a display screen 302 is installed on one side of the outer end of the lower hopper 101, wherein the vertical plate 2 is fixedly installed on the outside of the lower hopper 101 through the horizontal plate 3, and the feed pipe 301 is used to guide the light guide plate raw material in the lower hopper 101 into the lower hopper 101, and the weighing sensor 201 can transmit the weighing value of the light guide plate raw material to the display screen 302 for the staff to watch.

[0022] Among them, the drying component includes: two support seats 4 installed on the top of the injection molding machine body 1, an air pump a401 installed on the top of one of the support seats 4, an air pipe 402 connected to one side of the outer end of the air pump a401, and an electric heating wire 403 installed inside the air pipe 402. When it is necessary to dry the light guide plate raw material in the lower hopper 101, the air pump a401 uses the air pipe 5 to pump the outside air into the air pipe 402, and the air passing through the air pipe 402 is heated by the electric heating wire 403 in the air pipe 402, and then the heated air is transported to the lower hopper 101 through the air pipe 402, so that the light guide plate raw material inside the lower hopper 101 is dried by the heated air.

[0023] Among them, an exhaust pipe 5 is connected to one side of the outer end of the vacuum pump a401, and one end of the exhaust pipe 5 is connected to the lower hopper 101. Solenoid valves 501 are installed on both sides of the outer end of the lower hopper 101. When the heated air is transported to the lower hopper 101, the solenoid valve 501 close to the side of the air pipe 402 needs to be opened to ensure that the heated air in the air pipe 402 can enter the lower hopper 101. The air pipe 402 and the air inlet pipe 601 are both made of hose materials to prevent the air pipe 402 and the air inlet pipe 601 from affecting the weighing of the lower hopper 101.

[0024] Among them, a vacuum pump b6 is installed on the top of one of the support seats 4, and one side of the outer end of the vacuum pump b6 is connected to an air inlet pipe 601, one end of the air inlet pipe 601 is connected to the lower hopper 101, and the other side of the outer end of the vacuum pump b6 is connected to an air outlet pipe 602. When it is necessary to remove dust from the light guide plate raw material in the lower hopper 101, the air in the lower hopper 101 can be pumped into the air outlet pipe 602 through the vacuum pump b6 using the air inlet pipe 601, so that the dust in the light guide plate raw material is discharged from the air outlet pipe 602, thereby achieving the effect of removing dust from the light guide plate raw material. When using the air inlet pipe 601, the solenoid valve 501 close to the side of the air inlet pipe 601 needs to be opened.

[0025] Among them, an electric control valve 7 is installed inside the lower hopper 101, a feed hopper 701 is connected to the bottom of the top plate 202, and a feed port 702 is opened on the top of the top plate 202. When it is necessary to discharge the light guide plate raw material in the lower hopper 101 into the injection molding machine body 1, the electric control valve 7 is opened to allow the light guide plate raw material in the lower hopper 101 to pass through the feed pipe 301 and fall into the injection molding machine body 1, wherein the feed port 702 and the feed hopper 701 are used to add the light guide plate raw material to the lower hopper 101.

[0026] A control panel is installed on one side of the outer end of the injection molding machine body 1, and the control panel is used to control the start and stop of the electric control valve 7, the air pump b6, the solenoid valve 501, the air pump a401, the heating wire 403, the display screen 302 and the weighing sensor 201. The control panel, the electric control valve 7, the air pump b6, the solenoid valve 501, the air pump a401, the heating wire 403, the display screen 302 and the weighing sensor 201 are all powered by an external power supply, and the control procedures involved in the utility model can be implemented by those skilled in the art according to the same or similar principles in the prior art. This part is not the innovation of the utility model.

[0027] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0028] The above is a detailed introduction to a feeding structure for manufacturing an injection-molded light guide plate provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A feeding structure for manufacturing an injection molded light guide plate, characterized in that: include: An injection molding machine body (1), wherein a lower hopper (101) is arranged on the top of the injection molding machine body (1), a weighing component is arranged on the top of the lower hopper (101) for weighing the raw materials in the lower hopper (101), and a drying component is arranged on one side of the outer end of the lower hopper (101) for drying the raw materials in the lower hopper (101); The weighing assembly comprises: Vertical plates (2) arranged on both sides of the outer end of the lower hopper (101); A weighing sensor (201) installed on the top of the vertical plate (2); A top plate (202) disposed on the top of the weighing sensor (201); A connecting plate (203) is connected to both sides of the bottom of the top plate (202), and one end of the connecting plate (203) is connected to the lower hopper (101).

2. The feeding structure for manufacturing an injection molded light guide plate according to claim 1, characterized in that: The bottom of the vertical plate (2) is connected to a horizontal plate (3), the top of the injection molding machine body (1) is connected to a feed pipe (301), both sides of the outer end of the feed pipe (301) are respectively connected to the horizontal plate (3), and a display screen (302) is installed on one side of the outer end of the lower hopper (101).

3. The feeding structure for manufacturing an injection molded light guide plate according to claim 2, characterized in that: The drying component comprises: Two support seats (4) installed on the top of the injection molding machine body (1); An air pump a (401) installed on the top of one of the support seats (4); An air delivery pipe (402) connected to one side of the outer end of the air pump a (401); A heating wire (403) installed inside the gas delivery pipe (402).

4. The feeding structure for manufacturing an injection molded light guide plate according to claim 3, characterized in that: One side of the outer end of the vacuum pump a (401) is connected to an air extraction pipe (5), one end of the air extraction pipe (5) is connected to the lower hopper (101), and solenoid valves (501) are installed on both sides of the outer end of the lower hopper (101).

5. The feeding structure for manufacturing an injection molded light guide plate according to claim 4, characterized in that: An air pump b (6) is installed on the top of one of the support seats (4), one side of the outer end of the air pump b (6) is connected to an air inlet pipe (601), one end of the air inlet pipe (601) is connected to the lower hopper (101), and the other side of the outer end of the air pump b (6) is connected to an air outlet pipe (602).

6. The feeding structure for manufacturing an injection molded light guide plate according to claim 5, characterized in that: An electric control valve (7) is installed inside the lower hopper (101), a feeding hopper (701) is connected to the bottom of the top plate (202), and a feed port (702) is provided at the top of the top plate (202).

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