Injection molding machine for injection molding of car lamp

Abstract

The injection molding machine comprises a vertical frame, an injection molding driving assembly, a constant-temperature tank and an exhaust pump set, a lifting seat used for driving the injection molding driving assembly to do lifting motion is arranged on the surface of the vertical frame, and the injection molding driving assembly is fixed to the top face of the constant-temperature tank. And the injection molding driving assembly comprises a guide cylinder seat, a hydraulic driving rod and a sliding guide block installed on the inner side of the guide cylinder seat in a sliding mode, the hydraulic driving rod is fixed to the inner side of the guide cylinder seat, the output end of the hydraulic driving rod is fixedly connected to the top face of the sliding guide block, and an exhaust piston fixedly connected to the bottom face of the sliding guide block is installed on the inner side of the constant-temperature tank in a sliding mode. According to the utility model, through the integrated design of the injection molding driving assembly and the constant-temperature tank, the constant temperature of the injection molding liquid can be kept in the injection molding process, so that the injection molding precision and quality are improved, the situation that the automobile lamp shell is free of bubbles and flaws is ensured, and the bubbles in the injection molding liquid are effectively eliminated through the exhaust piston and the micropore exhaust film.

Description

TECHNICAL FIELD

[0001] The utility model relates to car lamp injection molding technical field, concretely is a kind of injection molding machine for car lamp injection molding. BACKGROUND

[0002] At present, the car lamp shell on market adopts injection molding process. However, traditional injection molding equipment is usually composed of injection driving device and independent heating and heat preservation device, and the injection liquid is prone to cause molding precision to drop due to temperature fluctuation in injection process. In addition, the traditional injection equipment mostly uses simple piston driving mechanism to press the injection liquid into mold, but due to lack of effective exhaust mechanism, air bubbles are prone to be generated in injection process, thereby affecting the surface finish and structural strength of car lamp shell.

[0003] Although basic heating device is introduced in part of the prior art to maintain the temperature of injection liquid, the temperature control precision is low, so that the viscosity of injection liquid is prone to change due to temperature fluctuation in injection process, and the quality of molding is affected. At the same time, the existing exhaust method mostly relies on manual exhaust or simple exhaust valve control, and it is difficult to accurately and quickly eliminate air bubbles in injection liquid, so that air bubble traces and defects exist on the surface of finished product. In addition, the traditional injection equipment often lacks effective means for real-time detection of air bubbles in injection liquid, so that the operator is difficult to find and adjust injection parameters in time, thereby increasing the production failure rate.

[0004] In view of the deficiencies in the above-mentioned traditional technology, the utility model provides an improved injection molding machine for car lamp injection molding, which integrates the injection driving assembly with the constant temperature tank, and combines the application of exhaust piston and ultrasonic sensor group, solves the problems of insufficient temperature control precision, incomplete air bubble removal and lack of real-time detection means in the prior art, and significantly improves the quality and efficiency of injection molding. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the technical problems existing in the prior art or related art.

[0006] The utility model relates to an injection molding equipment, and particularly relates to an injection molding machine for car lamp injection molding. The injection molding machine comprises a stand, an injection driving assembly, a constant temperature tank and an exhaust pump group, and through mutual cooperation of parts, the efficiency and finished product quality of injection molding can be effectively improved.

[0007] The utility model discloses a further configuration in a preferable example can be: the surface of vertical frame is equipped with the lifting seat for driving injection molding drive assembly lifting movement, and injection molding drive assembly is fixed on the top surface of constant temperature tank, and injection molding drive assembly includes guide cylinder seat, hydraulic drive rod and slide guide block that slides and installs in the inboard of guide cylinder seat, and hydraulic drive rod is fixed on the inboard of guide cylinder seat and the top surface of slide guide block is fixedly connected with the output end, the inboard of constant temperature tank is slidably installed with the exhaust piston that is fixedly connected with the bottom surface of slide guide block, and the surface of constant temperature tank is equipped with the flow guide ware, and the bottom end of flow guide ware is fixedly connected with injection molding nozzle, and the inboard of flow guide ware is equipped with bottom suction channel, and the surface of bottom suction channel is equipped with sensor group for detecting internal bubble, and exhaust pump group is fixed on the top surface of constant temperature tank, and the air inlet end of exhaust pump group is communicated with the inner chamber of exhaust piston, and the bottom surface of exhaust piston is equipped with a plurality of evenly distributed exhaust membranes.

[0008] Through the above structure design, the accurate injection of injection liquid is realized, and the effective exclusion of bubbles in the molding process is ensured, so that the finished product has better smoothness and strength.

[0009] The utility model discloses a further configuration in a preferable example can be: guide cylinder seat, hydraulic drive rod and slide guide block are perpendicular to the top surface of exhaust piston arrangement, and the input end of hydraulic drive rod is communicated with the hydraulic pump group. This configuration makes the hydraulic drive more stable, effectively improves the transmission efficiency of liquid in the injection molding process, and ensures the injection molding precision.

[0010] The utility model discloses a further configuration in a preferable example can be: the surface of constant temperature tank is equipped with electric heating sleeve unit for injection liquid heating and heat preservation, and the surface is equipped with one-way injection liquid pipe for injection liquid filling. Through the heating and heat preservation function, the temperature of injection liquid can be kept constant, thereby reducing the influence of temperature fluctuation on the molding effect, and ensuring the consistency of products.

[0011] The utility model discloses a further configuration in a preferable example can be: the inboard of exhaust piston is cavity structure, and the surface of exhaust membrane is equipped with micropore for airflow, and the micropore aperture is controlled in 0.2-1 micrometer range, avoids the passage of injection liquid. Through setting up micropore exhaust membrane, the gas in the cavity can be effectively excluded, and injection liquid is prevented from flowing out, and the airtightness and molding quality of molding cavity are improved.

[0012] The utility model discloses a further configuration in a preferable example can be: one end of bottom suction channel is communicated with the end of injection molding nozzle, and the other end of bottom suction channel extends to the bottom surface of constant temperature tank inner chamber. The flow channel design helps to guide the excess gas out, prevents gas from remaining in the injection molding cavity, and further improves the surface smoothness of finished products.

[0013] The utility model discloses in a preferable example can be further configured as: sensor group adopts ultrasonic sensor structure, is used for detecting the existence of the bubble in injection liquid, and the output of sensor group electrically connected has alarm. Ultrasonic sensor can real -time monitoring the bubble situation in injection liquid, and timely send the alarm, prevent the forming defect caused by bubble, improve the automation level of injection process.

[0014] The utility model discloses in a preferable example can be further configured as: exhaust pump group includes gear box and two pump gears of rotation installation in gear box inside, the bottom of gear box is equipped with telescopic connecting pipe, and the telescopic connecting pipe is telescopic bellows structure, and the surface of gear box is equipped with the drive motor for driving pump gear rotation. Through using telescopic bellows and gear drive structure, realize the accurate exhaust operation of injection liquid, ensure that there is no residual gas in the forming cavity, improve injection efficiency.

[0015] The utility model discloses the beneficial effect obtained as follows:

[0016] 1. The utility model discloses a injection drive subassembly and constant temperature tank integration design can keep the constant temperature of injection liquid in the injection process to improve the precision and quality of injection molding, ensure that there is no bubble and flaw in car lamp shell, further through exhaust piston and micropore exhaust membrane, effectively eliminate the bubble in injection liquid, reduce the influence of bubble to car lamp forming quality, ensure that the product surface is smooth after injection molding, no bubble trace.

[0017] 2. The utility model discloses the flow distributor with ultrasonic sensor group is configured, realizes the real -time detection to the bubble in injection liquid, and through alarm prompts operator, further ensure the quality of injection molding, avoid the forming defect caused by gas residue. DRAWINGS

[0018] Figure 1 It is the overall structure schematic drawing of an embodiment of the utility model;

[0019] Figure 2 It is the injection drive subassembly and constant temperature tank sectional structure schematic drawing of an embodiment of the utility model;

[0020] Figure 3 It is the exhaust piston bottom surface structure schematic drawing of an embodiment of the utility model;

[0021] Figure 4 It is the internal structure schematic drawing of exhaust pump group of an embodiment of the utility model.

[0022] Signs:

[0023] 100, stand; 110, lifting seat; 200, injection molding driving assembly; 210, guide cylinder seat; 220, hydraulic driving rod; 230, sliding guide block; 300, constant temperature tank; 310, flow guide; 320, exhaust piston; 311, injection molding nozzle; 312, bottom suction runner; 321, exhaust film; 400, exhaust pump set; 410, gear box; 420, pump gear; 430, telescopic connecting pipe; 411, driving motor. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the present application clearer, further detailed explanations will be given below with reference to the embodiments and the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] It is understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0026] The accompanying drawings are referred to in the following description of the present application. Figures 1-4 Some embodiments of the present application provide an injection molding machine for lamp injection molding.

[0027] Embodiment one

[0028] The present embodiment relates to an injection molding machine for lamp injection molding, comprising a stand 100, an injection molding driving assembly 200, a constant temperature tank 300, and an exhaust pump set 400. The components are cooperated with each other to realize efficient and accurate operation of injection molding.

[0029] In the present embodiment, the stand 100 is used to support and fix the whole device, and the surface thereof is provided with a lifting seat 110. The injection molding driving assembly 200 is driven to lift along the vertical direction by the lifting seat 110, so as to adjust the injection height. The injection molding driving assembly 200 is fixedly installed on the top surface of the constant temperature tank 300, and comprises a guide cylinder seat 210, a hydraulic driving rod 220, and a sliding guide block 230 slidingly installed on the inner side of the guide cylinder seat 210. The input end of the hydraulic driving rod 220 is provided with pressure by a hydraulic pump set, and the output end is fixedly connected with the top surface of the sliding guide block 230. The sliding guide block 230 can slide in the inner side of the guide cylinder seat 210 by the pushing of the hydraulic driving rod 220, so that the injection process is more stable and efficient.

[0030] The constant temperature tank 300 is internally provided with a heating and heat preservation electric heating sleeve, so as to maintain the constant temperature of the injection liquid and avoid the viscosity change of the injection liquid caused by temperature fluctuation. The inner side of the constant temperature tank 300 is also provided with a slidingly installed exhaust piston 320, the bottom surface of which is fixedly connected with the sliding guide block 230 to realize synchronous movement. In order to further ensure the quality of injection molding, a flow guide 310 is fixedly installed on the surface of the constant temperature tank 300, and the injection liquid is accurately introduced into the mold through the injection molding nozzle 311.

[0031] In addition, the bottom suction channel 312 arranged inside the flow guide 310 is used to discharge excess gas, preventing bubbles from remaining in the injection liquid and affecting the molding quality. The sensor group is arranged on the surface of the bottom suction channel 312 and detects the presence of bubbles through ultrasonic waves. Once an abnormality is detected, the sensor group will send an alarm through the electrically connected alarm to remind the operator to make adjustments.

[0032] The exhaust pump group 400 is fixedly installed on the top surface of the constant temperature tank 300, and the air inlet end is communicated with the inner cavity of the exhaust piston 320 to ensure that the gas in the cavity is discharged in time during the injection molding process. The exhaust pump group 400 includes a gear box 410, two pump gears 420 are rotatably installed in the gear box 410, the pump gears 420 are driven to rotate by a driving motor 411, and further through the extension of the telescopic corrugated pipe 430, the excess gas is discharged, avoiding the bubbles remaining, and ensuring the smoothness of the finished product surface.

[0033] Example two

[0034] In another embodiment, the flow guide design of the injection liquid is further optimized, focusing on improving the bubble removal efficiency during the injection molding process. This embodiment still uses the basic structure of the stand 100, the injection driving assembly 200, the constant temperature tank 300 and the exhaust pump group 400, but some components are adjusted to adapt to more complex molding requirements.

[0035] In this embodiment, the lifting seat 110 not only drives the injection driving assembly 200 to lift, but also increases the rotation adjustment function, so as to accurately adjust according to the height and angle of different molds. The bottom of the sliding guide block 230 in the injection driving assembly 200 is connected with the exhaust piston 320 through a flexible connection assembly, so as to enhance the stability of the injection liquid when introduced into the mold and reduce the generation of bubbles caused by the fluctuation of the injection liquid.

[0036] The heating and heat preservation system of the constant temperature tank 300 is further upgraded, and a multi-layer heating sheet structure is adopted, so that the temperature is more uniformly distributed in the injection liquid, ensuring that the injection liquid maintains constant temperature during the entire injection molding process. At the same time, a one-way injection pipe for injection of the injection liquid is added to avoid backflow of the injection liquid and ensure the continuity of the injection process.

[0037] In this embodiment, the inner cavity of the exhaust piston 320 is a hollow structure, and a plurality of exhaust membranes 321 are arranged on the surface for gas discharge. The diameter of the micropores on the exhaust membrane 321 is set to 0.2-1 microns to ensure that the injection liquid cannot pass through and only allows gas to be discharged. At the same time, the bottom suction channel 312 extends from the injection nozzle 311 to the bottom of the constant temperature tank 300, further optimizing the gas discharge path.

[0038] The sensor group is upgraded to a dual-frequency ultrasonic detector in the embodiment to realize higher-precision bubble detection, ensuring that even tiny bubbles can be detected in time. When bubbles are detected, the alarm will immediately prompt the operator to intervene. In addition, a more efficient gear transmission structure is adopted between the gear box 410 and the pump gear 420 in the exhaust pump group 400, and the material and structure of the telescopic bellows of the telescopic connecting pipe 430 are optimized to improve the exhaust efficiency and further improve the sealing performance of the forming cavity and the forming quality.

[0039] Through the above two embodiments, the design of the utility model can effectively solve the problems of inaccurate temperature control and difficulty in removing bubbles in the prior art, thereby significantly improving the finished product quality and production efficiency of the lamp injection molding.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. An injection molding machine for injection molding of a vehicle lamp, characterized by comprising: It includes: The stand (100), injection molding drive assembly (200), thermostat tank (300) and exhaust pump group (400), the surface of the stand (100) is provided with lifting seat (110) for driving injection molding drive assembly (200) lifting movement, the injection molding drive assembly (200) is fixed on the top surface of the thermostat tank (300), the injection molding drive assembly (200) includes guide cylinder seat (210), hydraulic drive rod (220) and sliding guide block (230) slidingly installed in the inner side of guide cylinder seat (210), the hydraulic drive rod (220) is fixed to the inner side of guide cylinder seat (210) and the output end is fixedly connected to the top surface of sliding guide block (230), the inner side of the thermostat tank (300) is slidingly installed with exhaust piston (320) fixedly connected to the bottom surface of sliding guide block (230), the surface of the thermostat tank (300) is provided with flow guide (310), and the bottom end of the flow guide (310) is fixedly connected with injection molding nozzle (311), the inner side of the flow guide (310) is provided with bottom suction flow channel (312), and the surface of the bottom suction flow channel (312) is provided with sensor group for detecting the air bubbles in the injection liquid, the exhaust pump group (400) is fixed to the top surface of the thermostat tank (300), and the air inlet end of the exhaust pump group (400) is communicated with the inner cavity of the exhaust piston (320), the bottom surface of the exhaust piston (320) is provided with a plurality of evenly distributed exhaust membranes (321).

2. The injection molding machine for injection molding of a vehicle lamp according to claim 1, characterized by The guide cylinder seat (210), hydraulic drive rod (220) and sliding guide block (230) are arranged vertically to the top surface of the exhaust piston (320), and the input end of the hydraulic drive rod (220) is communicated by the hydraulic pump group.

3. The injection molding machine for injection molding of a vehicle lamp according to claim 1, characterized by The surface of the thermostat tank (300) is provided with an electric heating sleeve for heating and keeping the injection liquid, and the surface of the thermostat tank (300) is provided with a one-way injection liquid pipe for adding injection liquid.

4. The injection molding machine for injection molding of a vehicle lamp according to claim 1, characterized by The inner side of the exhaust piston (320) is a cavity structure, the surface of the exhaust membrane (321) is provided with micro-holes for air flow, and the air micro-holes are controlled to be 0.2-1 microns to avoid the passage of injection liquid.

5. The injection molding machine for injection molding of a vehicle lamp according to claim 1, characterized by One end of the bottom suction flow channel (312) is communicated with the end of the injection molding nozzle (311), and the other end of the bottom suction flow channel (312) extends to the bottom surface of the inner cavity of the thermostat tank (300).

6. The injection molding machine for injection molding of a vehicle lamp according to claim 1, characterized by The sensor group is an ultrasonic sensor structure, which is used for detecting the existence of air bubbles in the injection liquid, and the output end of the sensor group is electrically connected with an alarm.

7. The injection molding machine for injection molding of a vehicle lamp according to claim 1, characterized by The exhaust pump group (400) includes a gear box (410) and two pump gears (420) rotatably installed in the inner side of the gear box (410), the bottom surface of the gear box (410) is provided with an extension connecting pipe (430), the extension connecting pipe (430) is a telescopic corrugated pipe structure, and the surface of the gear box (410) is provided with a drive motor (411) for driving the pump gears (420) to rotate.

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