A defect repair device for automobile interior injection molding parts

Abstract

The present invention relates to the technical field of automobile injection molding repair, and in particular to a defect repair device for automobile interior injection molding. The present invention includes a supporting device, a fixture, a preparatory processing device and an injection device. A material moving device is installed on one side of the supporting device, and a shaping device and a monitoring device are also installed on the supporting device. The supporting device is used to support other structures to facilitate processing operations. The fixture is used to install and fix molds and injection moldings that need to be repaired, which is convenient for repair operations on injection moldings and avoids displacement of injection moldings during processing. The material moving device is used to transfer and transport injection moldings to be repaired, which is convenient for automatic loading and improves equipment processing efficiency. The preparatory processing device is used to perform preliminary processing and repair on the injection moldings to be repaired, which is convenient for subsequent repair and shaping operations. The injection device is used to inject hot melt material into the area to be repaired of the injection molding to achieve automatic material replenishment and repair.

Description

Technical Field

[0001] The invention relates to the technical field of automobile injection molding repair, in particular to a defect repair device for automobile interior injection molding parts. Background Art

[0002] Automotive injection molded parts refer to plastic parts produced by injection molding process used in the automobile manufacturing process. These parts are usually used for interior and exterior decoration, structural parts and functional components of automobiles. The production process of automotive injection molded parts mainly includes designing parts and molds, making injection molds according to design drawings, usually using high-strength steel or aluminum alloy materials. The molds are precision machined and heat treated to ensure durability and precision. The plastic particles are heated to a molten state, and the molten plastic is injected into the mold cavity through the nozzle of the injection molding machine to fill the mold. After cooling, the plastic solidifies to form the required parts.

[0003] During the injection molding process, a variety of defects may occur, which will affect the appearance, performance and service life of the injection molded parts. These defects mainly include bubbles, scratches, flow marks, spots and other defects on the surface or inside of the injection molded parts, cracks on the surface or inside of the injection molded parts, and some parts of the injection molded parts are not completely filled. When similar defects occur, they are often discarded or recycled, resulting in a waste of production costs. However, the repair and finishing work is complicated and there is a lack of simple and effective finishing equipment. Summary of the invention

[0004] In order to solve the problem of conveniently repairing defective injection molded parts and reduce production costs, the present invention provides a defect repairing device for automobile interior injection molded parts.

[0005] The present invention provides a defect repair device for automobile interior injection molded parts, which adopts the following technical solution:

[0006] A defect repair device for automobile interior injection molded parts, comprising a supporting device, a jig, a preparatory processing device and an injection device, wherein the jig, the preparatory processing device and the injection device are respectively mounted on the supporting device and mounted on the ground through the supporting device, wherein the processing operation moving direction of the preparatory processing device and the injection device is toward the jig and the injection molded parts fixed on the jig are repaired, pre-processed and repaired, a material transfer device is installed on one side of the supporting device, and the material transfer device transfers the injection molded parts to be repaired to the jig, and a shaping device and a monitoring device are also installed on the supporting device, wherein the shaping device performs overall plastic shaping on the plastic parts after the repair processing by the injection device, and the monitoring device monitors and assists in controlling the processing process of the preparatory processing device, the injection device and the shaping device.

[0007] The supporting device is used to support other structures to facilitate processing operations. The tooling fixture is used to install and fix the mold and the injection molded parts that need to be trimmed, which is convenient for the trimming operation of the injection molded parts and avoids the displacement of the injection molded parts during the processing. The material transfer device is used to transfer and transport the injection molded parts to be trimmed, which is convenient for automatic loading and improves the processing efficiency of the equipment. The preparatory processing device is used to perform preliminary processing and trimming on the injection molded parts to be trimmed, which is convenient for subsequent trimming and shaping operations. The injection device is used to inject hot-melt material into the area to be trimmed of the injection molded parts to realize automatic material filling and trimming. The shaping device is used to finally shape the repaired injection molded parts to maintain and restore the original shape of the injection molded parts. The monitoring device is used to monitor the trimming process, which is convenient for providing reference to the control device, and is conducive to realizing automatic monitoring of the equipment and feedback of abnormal equipment status.

[0008] Furthermore, the preparatory processing device includes a heating device, a cutting device and an edge grinding device, and the heating device, cutting device and edge grinding device are respectively extended and retracted up and down and installed in a translational and swinging manner. The heating device heats and softens the defective edge of the injection molded part by a heating resistance wire, the cutting device cuts the defect into a simple geometric shape by cutting the defective material of the injection molded part, and the edge grinding device smoothes the defective edge of the injection molded part by grinding the defective edge material of the injection molded part.

[0009] The heating device is used to heat and soften the defects of the injection molded parts, which is convenient for the subsequent filling of hot-melt materials to form an overall structure and improve the firmness of the finishing. The cutting device is used to cut off the excess material at the defects of the injection molded parts, which is convenient for the subsequent filling of hot-melt repair materials and is beneficial to control the amount of hot-melt material filled, and is also beneficial to the connection of the hot-melt material and the injection molded parts into a whole. The edge grinding device is used to grind the edges of the injection molded parts to be repaired, which is beneficial to improve the connection stability between the edges of the injection molded parts and the hot-melt repair materials.

[0010] Furthermore, the heating device includes a heating wire and a protective cover, the protective cover is wrapped around the outside of the heating wire and controls the exposure and closure of the heating wire by telescoping, the heating wire radiates heat toward the defect of the injection molded part in the exposed state and then heats the material at the defect of the injection molded part until it softens, the cutting device includes a cutting knife and a material sucker, the cutting knife removes excess material at the defect of the injection molded part by spiral cutting or downward shearing to form a standard geometric shape, the standard geometric shapes include circle, rectangle and ellipse, the material sucker is installed at the center of the cutting knife and is externally connected to a high-pressure negative pressure machine, the edge grinding device includes an edge grinding wheel and an edge grinding motor, the edge grinding wheel is transmission-connected to the edge grinding motor and controls grinding along the edge of the defect of the injection molded part, and the edge of the defect of the injection molded part is ground into a transition arc shape.

[0011] The heating wire is used to heat and soften the injection molded parts to provide heat for rapid heating and softening. The protective cover is used to control the heating of the heating wire and protect other processing equipment to avoid damage caused by continuous heating of the heating wire. The cutting knife is used to cut the injection molded parts to quickly and easily remove excess material and effectively keep the cut edges smooth for subsequent operations. The suction device is used to absorb the excess material cut off to avoid the excess material cut off affecting subsequent finishing operations and keep the processed surface clean. The edge grinding wheel is used to grind the injection molded parts to achieve precise grinding for easy automated control and operation. The edge grinding motor is used to drive the edge grinding wheel to rotate and provide power for grinding.

[0012] Furthermore, the injection device includes a material box, an injection head and an injection bracket. The material box is connected to the injection head through a material delivery pipe. The injection head extrude hot melt material for repair toward the defects of the injection molded part. The material box and the injection head are installed above the tooling fixture through the injection bracket to extend and translate and swing.

[0013] The material box is used to store hot-melt materials and keep them in a molten state, which is convenient for continuous injection. The injection head is used to inject hot-melt materials into the area of ​​the injection molded part to be trimmed and filled, so as to realize automatic injection and precise trimming. The injection bracket is used to control the injection head to approach and move away from the injection molded part to be injected and trimmed, which is conducive to cooperating with other operating mechanisms for trimming operations.

[0014] Furthermore, a heating rod and a stirring rod are installed in the material box, the heating rod is connected to an external electric heating device and heats the hot melt in the material box by electric heating, the stirring rod is rotatably installed in the material box and continuously stirs the hot melt in the material box, an injection valve and a telescopic box are installed on the pipeline connecting the injection head and the material box, the injection valve controls the discharge and closing of the injection head by electric control, the telescopic box controls the internal capacity of the telescopic box by electric control stretching and controls the hot melt in the telescopic box by electric control compression to be extruded through the injection head, the injection bracket includes a conversion frame and a telescopic frame, the conversion frame is controlled to swing and is installed on one side of the tooling fixture, and the preparatory processing device and the injection device are installed on the conversion frame by telescoping the telescopic frame up and down.

[0015] The heating rod is used to heat the hot-melt material in the material box and keep the hot-melt material in a molten state. It is also convenient for precise temperature control to avoid high temperature burning the hot-melt material. The stirring rod is used to stir the hot-melt material in the material box, which is conducive to evenly heating the hot-melt material and keeping the whole in a molten state. The injection valve is used to control the injection head to inject and stop injection, which is convenient for controlling the injection amount and reducing losses. The telescopic box is conducive to pre-setting and automatically controlling the injection amount, increasing the injection speed and reducing the complexity of injection control. The conversion frame is used to drive the injection head to move and switch other trimming operating mechanisms through swinging to perform processing and trimming operations, which is conducive to the continuity of the trimming operations and non-interference with each other. The telescopic frame is used to control the injection head and other operations to move up and down so as to approach the injection molded parts to be trimmed for step-by-step trimming operations.

[0016] Furthermore, the shaping device includes a smoothing device and a residual material cleaning device, which are respectively telescopically installed above the tooling fixture up and down, the smoothing device presses the hot melt evenly and fills the defects of the injection molded part evenly, and the residual material cleaning device removes the defects of the injection molded part by cutting to fill the excess hot melt after trimming, the smoothing device includes a cooling block and a positioning ring, the cooling block is externally connected to a heat exchange device and has a coolant flowing inside, the positioning ring is arranged on the outer ring of the cooling block and the bottom end of the positioning ring is flush with the lowest active end of the cooling block, the residual material cleaning device includes a scraper and a grinding device, the scraper and the grinding device are movably arranged along the trimmed surface of the injection molded part, the blade of the scraper is flush with the trimmed surface of the injection molded part and cuts off the excess hot melt on the trimmed surface of the injection molded part during movement, and the grinding device is a drum grinding wheel and grinds the undulations of the trimmed surface of the injection molded part by rolling and rotating.

[0017] The smoothing device is used to smooth the injected hot-melt material so that the hot-melt material is evenly spread over the defects of the injection molded parts to be trimmed, thereby realizing the shaping of the hot-melt material and the combination of the injection molded parts. The residual material cleaning device is used to remove excess material after the hot-melt material is solidified, thereby maintaining the flatness and beauty of the trimmed parts of the injection molded parts. The cooling block is used to cool the hot-melt material, which is beneficial for the hot-melt material to cool and fix into shape quickly. The positioning ring is used to limit the downward pressure limit of the cooling block, thereby preventing the cooling block from over-squeezing the hot-melt material and making the repaired part too thin, thereby meeting the trimming needs. The scraper is used to remove excess hot-melt material for subsequent processing. The grinding device is used to grind and trim the filled part, thereby further making the combination of the filled hot-melt material and the injection molded part smooth and improving the aesthetics.

[0018] Furthermore, the monitoring device includes a camera, a positioning sensor and a temperature sensor. The camera is fixedly installed on one side above the tooling fixture with the camera direction facing the tooling fixture. The positioning sensors are respectively installed on the moving components of the tooling fixture, the material moving device, the preparatory processing device, the injection device and the forming device, and monitor and control the moving distance and the swing angle. The temperature sensors are respectively installed on the preparatory processing device, the injection device and the forming device, and monitor and control the temperature of the heating or cooling components. The camera, positioning sensor and temperature sensor communicate with an external control computer respectively.

[0019] The camera is used to monitor and observe the defective area of ​​the injection molded part to be repaired, which is convenient for locating the repair position and controlling the repair movement and operation. The positioning sensor is convenient for monitoring the position of the repair processing equipment and comparing it with the preset position to control the deviation. Excessive deviation will reduce the repair effect. The temperature sensor is used to monitor the temperature of heating equipment and refrigeration equipment, which is convenient for adjusting the temperature and monitoring temperature abnormalities.

[0020] Furthermore, the supporting device includes a work table, a supporting frame and a protective shell. The work table is fixedly installed horizontally through the supporting frame. The protective shell and the work table form a closed box. The work table is installed with a table slide rail and a positioning block. The table slide rail is installed horizontally and laterally below the shaping device. One end of the table slide rail extends out of the protective shell and corresponds to the loading position of the material moving device. The supporting frame includes legs and a storage cabinet. A storage cabinet is provided at the bottom of the work table. Legs are installed at the four corners of the bottom of the storage cabinet. The length of the legs is adjusted by adjusting bolts. A door panel and an observation window are opened and installed on the protective shell. The door panel and the observation window are made of transparent material and are movably opened and closed and installed on the side of the protective shell.

[0021] The work table is used to install the tooling fixture, which is conducive to fixing the tooling fixture and performing automatic positioning operations. The support frame is used to support the work table, fix the work table on the ground, and maintain a reasonable height for easy operation. The protective shell is used to wrap the operating mechanism to reduce the impact of the outside on the operating mechanism, while protecting the safety of the operator and reducing the harm to the operator during the operation of the processing operating mechanism. The table slide is used to control and guide the movement of the tooling fixture, which is conducive to fixing the tooling fixture to different positions for processing operations. The positioning block is used to determine and limit the moving position and moving distance of the tooling fixture to achieve precise positioning and automated operation. The legs are used to fix the entire device on the ground to improve the installation stability. The storage cabinet is used to wrap the gap between the legs to improve the stability of the legs. At the same time, it is convenient to place sundries and provide storage space. The door panel is used to control the opening and closing and facilitate the operator to operate the auxiliary equipment and manually handle it. It is also conducive to repair and maintenance. The observation window is used to observe the processing execution process of the internal processing operating mechanism, which is convenient for timely detection of faults and rapid processing.

[0022] Furthermore, the tooling fixture includes a bottom mold fixture and a top mold fixture, the bottom mold fixture is slidably installed on the table slide rail, the top mold fixture is telescopically installed up and down above the moving position of the bottom mold fixture, the bottom mold fixture is installed on the mounting slide through an adjustment plate, the mounting slide is slidably installed on the table slide rail through the slider transmission control, the adjustment plate controls the installation height and installation angle through the adjusting bolt, the top mold fixture is lifted and lowered by the telescopic rod, and the top mold fixture is controlled to adjust the installation angle through the mounting bolt.

[0023] The bottom mold fixture is used to install and fix the bottom installation mold, which is convenient for positioning the installation mold and is conducive to positioning the injection molded part to be trimmed. The top mold fixture is used to install the top mold, which is convenient for controlling the movement and positioning of the top mold, and cooperates with the bottom mold fixture for trimming operations. The installation slider is used to drive the bottom mold to move, and at the same time, it is convenient to adjust the position of the bottom mold, improve the installation accuracy and the matching degree of processing operations. The slider transmission is used to drive the installation slider and the bottom mold to move, which is convenient for automatic control of the moving distance and position of the installation slider and the bottom mold. The adjustment plate is used to install the bottom mold, which is convenient for adjusting the installation angle or horizontality of the bottom mold, which is conducive to controlling the accuracy of the installation angle of the bottom mold, thereby improving the processing accuracy. The adjusting bolt is used to control and adjust the height of the adjustment plate at different positions, thereby further realizing the adjustment of any angle of the adjustment plate relative to the horizontal plane. The mounting bolt is used to fix the top mold fixture and adjust the installation angle of the top mold fixture, and further adjust the installation angle of the top mold, which is conducive to improving the matching accuracy with the bottom mold fixture. The telescopic rod is used to control the top mold fixture to approach the bottom mold fixture and combine together, and realize the trimming of the injection molded part through pressure.

[0024] Furthermore, the material moving device includes a material rack and a material moving robot arm, the material rack is fixedly installed on one side of the work table, the material moving robot arm is installed between the material rack and the work table and moves the injection molded parts to be trimmed from the material rack to the bottom mold fixture on the work table, the material rack is movably installed with a conveying rack and a positioning push rod, the conveying rack is installed with a conveyor belt to transport the injection molded parts to be trimmed, the end of the conveyor belt on the conveying rack is installed with a positioning push rod, the positioning push rod moves the injection molded parts to be trimmed to a predetermined material moving position, the material moving robot arm is installed with a feeding suction cup rack, the feeding suction cup rack grabs the injection molded parts to be trimmed at the predetermined material moving position under the drive of the material moving robot arm and places them on the bottom mold fixture, and the material moving robot arm is installed on the ground through a turntable rotation.

[0025] The material rack is used to place the injection molded parts to be trimmed, which is convenient for continuous loading and transportation. The material transfer robot arm is used for automatic loading and transferring, replacing manual labor to achieve rapid loading operations. The conveyor rack is used to convey the injection molded parts to be trimmed, which is convenient for mechanized automatic loading and continuous loading, improves processing efficiency, and reduces manual intervention. The positioning push rod is used to push the injection molded parts to be trimmed that have been transported to the conveyor rack, and pushes the injection molded parts to the predetermined position, which is convenient for the next step of movement and is conducive to controlling the loading accuracy of the injection molded parts to be trimmed. The feeding suction cup rack is used to grab the injection molded parts to be trimmed and loaded, and grabs them through the suction cup to reduce damage to the injection molded parts. The turntable is used to control the rotation of the material transfer robot arm to achieve swinging between different positions, which is convenient for material transfer and feeding.

[0026] In summary, the present invention has the following beneficial technical effects:

[0027] 1. The supporting device is used to support other structures to facilitate processing operations. The tooling fixture is used to install and fix the mold and the injection molded parts that need to be trimmed, which is convenient for trimming the injection molded parts and avoiding the displacement of the injection molded parts during the processing. The material transfer device is used to transfer and transport the injection molded parts to be trimmed, which is convenient for automatic loading and improves the processing efficiency of the equipment. The preparatory processing device is used to perform preliminary processing and trimming on the injection molded parts to be trimmed, which is convenient for subsequent trimming and shaping operations. The injection device is used to inject hot-melt material into the area to be trimmed of the injection molded parts to realize automatic material filling and trimming. The shaping device is used to finally shape the repaired injection molded parts to maintain and restore the original shape of the injection molded parts. The monitoring device is used to monitor the trimming process, which is convenient for giving reference to the control device, which is conducive to realizing automatic monitoring of the equipment and feedback of abnormal equipment status.

[0028] 2. The heating device is used to heat and soften the defects of the injection molded parts, which is convenient for the subsequent filling of hot-melt materials to form an overall structure and improve the firmness of the finishing. The cutting device is used to cut off the excess material at the defects of the injection molded parts, which is convenient for the subsequent filling of hot-melt repair materials, which is beneficial to control the amount of hot-melt material filled, and is also beneficial to the connection of the hot-melt material and the injection molded parts into a whole. The edge grinding device is used to grind the edge of the injection molded part to be repaired, which is beneficial to improve the connection stability between the edge of the injection molded part and the hot-melt repair material.

[0029] 3. The heating wire is used to heat and soften the injection molded parts to provide heat for rapid heating and softening. The protective cover is used to control the heating of the heating wire and protect other processing equipment to avoid damage caused by continuous heating of the heating wire. The cutting knife is used to cut the injection molded parts to quickly and easily remove excess material and effectively keep the cut edges smooth for subsequent operations. The suction device is used to absorb the excess material cut off to avoid the excess material cut off affecting subsequent finishing operations and keep the processed surface clean. The edge grinding wheel is used to grind the injection molded parts to achieve precise grinding for easy automated control and operation. The edge grinding motor is used to drive the edge grinding wheel to rotate and provide power for grinding.

[0030] 4. The material box is used to store hot-melt materials and keep them in a molten state, which is convenient for continuous injection. The injection head is used to inject hot-melt materials into the area to be trimmed and filled in the injection molded part, so as to realize automatic injection and precise trimming. The injection bracket is used to control the injection head to approach and move away from the injection molded part to be injected and trimmed, which is conducive to cooperating with other operating mechanisms for trimming operations.

[0031] 5. The heating rod is used to heat the hot-melt material in the material box to keep the hot-melt material in a molten state, and at the same time facilitates precise temperature control to avoid high temperature burning of the hot-melt material. The stirring rod is used to stir the hot-melt material in the material box, which is conducive to evenly heating the hot-melt material and keeping the whole in a molten state. The injection valve is used to control the injection head to inject and stop injection, which is convenient for controlling the injection amount and reducing losses. The telescopic box is conducive to presetting and automatically controlling the injection amount, increasing the injection speed, and reducing the complexity of injection control. The conversion frame is used to drive the injection head to move and switch other trimming operating mechanisms through swinging for processing and trimming operations, which is conducive to the continuity of the trimming operation and no mutual influence. The telescopic frame is used to control the injection head and other operations to move up and down so as to approach the injection molded part to be trimmed for step-by-step trimming operations.

[0032] 6. The smoothing device is used to smooth the injected hot-melt material so that the hot-melt material is evenly spread over the defects of the injection molded parts to be repaired, so as to achieve the shaping of the hot-melt material and the combination of the injection molded parts. The residual material cleaning device is used to remove the excess material after the hot-melt material is solidified, so as to keep the trimming of the injection molded parts smooth and beautiful. The cooling block is used to cool the hot-melt material, which is conducive to the rapid cooling and fixing of the hot-melt material. The positioning ring is used to limit the downward pressure limit of the cooling block to prevent the cooling block from over-extruding the hot-melt material and making the repaired part too thin to meet the needs of trimming. The scraper is used to remove excess hot-melt material for subsequent processing. The grinding device is used to grind and trim the filling part to further make the combination of the filled hot-melt material and the injection molded part smooth and improve the aesthetics.

[0033] 7. The camera is used to monitor and observe the defective area of ​​the injection molded part to be repaired, which is convenient for locating the repair position and controlling the repair movement and operation. The positioning sensor is convenient for monitoring the position of the repair processing equipment and comparing it with the preset position to control the deviation. If the deviation is too large, the repair effect will be reduced. The temperature sensor is used to monitor the temperature of the heating equipment and the refrigeration equipment, which is convenient for adjusting the temperature and monitoring temperature abnormalities.

[0034] 8. The work surface is used to install fixtures, which is conducive to fixing fixtures and performing automatic positioning operations. The support frame is used to support the work surface, fix the work surface on the ground, and maintain a reasonable height for easy operation. The protective shell is used to wrap the operating mechanism to reduce the impact of the outside on the operating mechanism, while protecting the safety of the operator and reducing the harm to the operator during the operation of the processing operating mechanism. The table slide is used to control and guide the movement of the fixture, which is conducive to fixing the fixture to different positions for processing operations. The positioning block is used to determine and limit the moving position and moving distance of the fixture to achieve precise positioning and automated operation. The legs are used to fix the entire device on the ground to improve the installation stability. The storage cabinet is used to wrap the gap between the legs to improve the stability of the legs. At the same time, it is convenient to place sundries and provide storage space. The door panel is used to control the opening and closing and facilitate the operator to operate the auxiliary equipment and manual processing. It is also conducive to repair and maintenance. The observation window is used to observe the processing execution process of the internal processing operating mechanism, which is convenient for timely detection of faults and rapid processing.

[0035] 9. The bottom mold fixture is used to install and fix the bottom installation mold, which is convenient for positioning the installation mold and is conducive to positioning the injection molded parts to be trimmed. The top mold fixture is used to install the top mold, which is convenient for controlling the movement and positioning of the top mold, and cooperates with the bottom mold fixture for trimming operations. The installation slider is used to drive the bottom mold to move, and at the same time, it is convenient to adjust the position of the bottom mold, improve the installation accuracy and the matching degree of processing operations. The slider transmission is used to drive the installation slider and the bottom mold to move, which is convenient for automatic control of the moving distance and position of the installation slider and the bottom mold. The adjustment plate is used to install the bottom mold, which is convenient for adjusting the installation angle or horizontality of the bottom mold, which is conducive to controlling the accuracy of the installation angle of the bottom mold, thereby improving the processing accuracy. The adjusting bolt is used to control and adjust the height of the adjustment plate at different positions, thereby further realizing the adjustment of any angle of the adjustment plate relative to the horizontal plane. The installation bolt is used to fix the top mold fixture and adjust the installation angle of the top mold fixture, and further adjust the installation angle of the top mold, which is conducive to improving the matching accuracy with the bottom mold fixture. The telescopic rod is used to control the top mold fixture to approach the bottom mold fixture and combine them together to achieve the trimming of the injection molded parts through pressure.

[0036] 10. The material rack is used to place the injection molded parts to be trimmed, which is convenient for continuous loading and transportation. The material transfer robot arm is used for automatic loading and transfer, replacing manual labor to achieve fast loading operations. The conveyor rack is used to transport the injection molded parts to be trimmed, which is convenient for mechanized automatic loading and continuous loading, improves processing efficiency, and reduces manual intervention. The positioning push rod is used to push the injection molded parts to be trimmed that are transported to the conveyor rack and push the injection molded parts to the predetermined position, which is convenient for the next step of movement and is conducive to controlling the loading accuracy of the injection molded parts to be trimmed. The feeding suction cup rack is used to grab the injection molded parts to be trimmed and loaded, and grabs them through the suction cup to reduce damage to the injection molded parts. The turntable is used to control the rotation of the material transfer robot arm to achieve swinging between different positions, which is convenient for material transfer and feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the installation and layout structure of the present invention;

[0038] Figure 2 for Figure 1 Schematic diagram from another perspective;

[0039] Figure 3 This is a schematic diagram of the internal structure of the front side of the present invention;

[0040] Figure 4 It is a schematic diagram of the injection device and the shaping device of the present invention.

[0041] Description of reference numerals:

[0042] 1. Support device, 11. Work table, 111. Table slide rail, 112. Positioning block, 12. Support frame, 121. Leg, 122. Storage cabinet, 13. Protective shell, 131. Door panel, 132. Observation window;

[0043] 2. Fixture, 21. Bottom mold fixture, 211. Installing slide block, 212. Slide block transmission, 213. Adjusting plate, 214. Adjusting bolt, 22. Top mold fixture, 221. Installing bolt, 222. Telescopic rod;

[0044] 3. Material moving device, 31. Material placing rack, 311. Conveying rack, 312. Positioning push rod, 32. Material moving mechanical arm, 321. Material feeding suction cup rack, 322. Turntable;

[0045] 4. Preparatory processing device, 41. Heating device, 411. Heating wire, 412. Protective cover, 42. Cutting device, 421. Cutting knife, 422. Suction device, 43. Edge grinding device, 431. Edge grinding wheel, 432. Edge grinding motor;

[0046] 5. Injection device, 51. Material box, 511. Heating rod, 512. Stirring rod, 52. Injection head, 521. Injection valve, 522. Telescopic box, 53. Injection bracket, 531. Conversion bracket, 532. Telescopic bracket;

[0047] 6. shaping device, 61. smoothing device, 611. cooling block, 612. positioning ring, 62. residual material cleaning device, 621. scraper, 622. grinding device;

[0048] 7. Monitoring device, 71. Camera, 72. Positioning sensor, 73. Temperature sensor. DETAILED DESCRIPTION

[0049] The following will be combined with the attached Figure 1-Figure 4, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] Embodiment 1:

[0052] The embodiment of the present invention discloses a defect repair device for automobile interior injection molding parts, referring to Figure 1 and Figure 2 , comprising a supporting device 1, a fixture 2, a preparatory processing device 4 and an injection device 5, wherein the fixture 2, the preparatory processing device 4 and the injection device 5 are respectively mounted on the supporting device 1 and mounted on the ground through the supporting device 1, and the preparatory processing device 4 and the injection device 5 are moved in a processing operation direction toward the fixture 2 and perform trimming, pre-processing and repair processing on the injection molded part fixed on the fixture 2;

[0053] A material transfer device 3 is installed on one side of the support device 1, and the material transfer device 3 transfers the injection molded part to be trimmed to the fixture 2;

[0054] The support device 1 is also equipped with a shaping device 6 and a monitoring device 7. The shaping device 6 performs overall plastic shaping on the plastic part after repair processing by the injection device 5. The monitoring device 7 monitors and assists in controlling the processing of the preparatory processing device 4, the injection device 5 and the shaping device 6.

[0055] When in use, the injection molded parts to be trimmed are placed on the material moving device 3, the material moving device 3 drives the injection molded parts to be trimmed to be placed on the fixture 2, and then the fixture 2 drives the injection molded parts to be trimmed to pass through the preparatory processing device 4, the injection device 5 and the shaping device 6 respectively for trimming in sequence, and finally the trimming is completed, wherein the monitoring device 7 monitors and detects the operation of the equipment, and performs automated trimming operations through feedback control equipment.

[0056] Embodiment 2:

[0057] Reference Figure 1-Figure 3The preparatory processing device 4 includes a heating device 41, a cutting device 42 and an edge grinding device 43. The heating device 41, the cutting device 42 and the edge grinding device 43 are respectively telescopically installed up and down and are installed to swing in translation. The heating device 41 heats and softens the defect edge of the injection molded part through a heating resistance wire, the cutting device 42 cuts the defect into a simple geometric shape by cutting the defect material of the injection molded part, and the edge grinding device 43 smoothes the defect edge of the injection molded part by grinding the defect edge material of the injection molded part.

[0058] The cutting device 42 first cuts the defective parts of the injection molded parts into round holes or rectangular holes of uniform standard size, and then the edge grinding device 43 grinds the cut edges, and finally the heating device 41 heats and softens the cut and grinded edges.

[0059] Reference Figure 1-Figure 3 The heating device 41 includes a heating wire 411 and a protective cover 412. The protective cover 412 is wrapped around the outside of the heating wire 411 and controls the heating wire 411 to be exposed and closed by telescoping. The heating wire 411 radiates heat toward the defect of the injection molded part in an exposed state and heats the defect material of the injection molded part until it softens.

[0060] The cutting device 42 includes a cutting knife 421 and a material sucker 422. The cutting knife 421 removes excess material from defects of the injection molded part by rotary cutting or downward shearing to form a standard geometric shape. The standard geometric shape includes a circle, a rectangle and an ellipse. The material sucker 422 is installed at the center of the cutting knife 421 and is externally connected to a high-pressure negative pressure machine.

[0061] The edge grinding device 43 includes an edge grinding wheel 431 and an edge grinding motor 432. The edge grinding wheel 431 is connected to the edge grinding motor 432 and controls the edge of the defect of the injection molded part to grind the defect edge of the injection molded part into a transition arc shape.

[0062] The heating wire 411 is wrapped in the protective cover 412, and then the protective cover 412 is lifted and opened to control the exposure and sealing of the heating wire 411. When sealed, the heating wire 411 automatically cuts off the power and stops heating. When heating is required, the heating wire 411 is first started to reach a certain temperature, and then the protective cover 412 is opened to heat and soften the edge of the injection molded part after cutting.

[0063] The cutting knife 421 includes a stamping tool and a rotary tool. The stamping tool cuts the defective part of the injection molded part by downward stamping and shearing, and the rotary tool cuts with saw teeth by rotation. The suction device 422 continuously sucks away the cut debris and collects it for recycling.

[0064] The edge grinding wheel 431 grinds the cut edge of the injection molded part through the rough side wall to remove the cutting residue and keep the edge smooth.

[0065] Embodiment 3:

[0066] Reference Figure 1-Figure 4 The injection device 5 includes a material box 51, an injection head 52 and an injection bracket 53. The material box 51 is connected to the injection head 52 through a material delivery pipeline. The injection head 52 extrude hot melt material for repairing toward the defects of the injection molded part. The material box 51 and the injection head 52 are installed above the tooling fixture 2 through the injection bracket 53 to extend and translate and swing.

[0067] The injection bracket 53 drives the material box 51 and the injection head 52 to move above the hole cut after the injection molded part, and then the injection head 52 starts to extrude the hot melt material in the material box 51 into the hole cut after the injection molded part.

[0068] Reference Figure 1-Figure 4 A heating rod 511 and a stirring rod 512 are installed in the material box 51. The heating rod 511 is connected to an external electric heating device and heats the hot melt in the material box 51 by electric heating. The stirring rod 512 is rotatably installed in the material box 51 and continuously stirs the hot melt in the material box 51.

[0069] An injection valve 521 and a telescopic box 522 are installed on the pipeline connecting the injection head 52 and the material box 51. The injection valve 521 controls the discharge and closing of the injection head 52 through electric control. The telescopic box 522 controls the internal capacity of the telescopic box 522 through electric control stretching and controls the hot melt in the telescopic box 522 to be squeezed out through the injection head 52.

[0070] The injection support 53 includes a conversion frame 531 and a telescopic frame 532 . The conversion frame 531 is mounted on one side of the fixture 2 to control swinging. The preparatory processing device 4 and the injection device 5 are mounted on the conversion frame 531 through the telescopic frame 532 to telescope up and down.

[0071] The material box 51 first pours the hot melt into the telescopic box 522 through the injection valve 521, and the telescopic box 522 stops by controlling the injection valve 521 according to the pre-set capacity, and then the telescopic box 522 is started through another injection valve 521 to inject the hot melt into the injection molded part.

[0072] Embodiment 4:

[0073] Reference Figure 1-Figure 3 The shaping device 6 includes a smoothing device 61 and a residual material cleaning device 62, which are respectively telescopically installed above the fixture 2. The smoothing device 61 presses the hot melt uniformly and fills the defects of the injection molded part uniformly, and the residual material cleaning device 62 removes the defects of the injection molded part by cutting and fills the excess hot melt after trimming.

[0074] The smoothing device 61 smoothes the hot melt by pressing, so that the hot melt fills the holes cut in the injection molded part, and then the hot melt and the softened material at the edge of the injection molded part are fused into a whole. After smoothing, the excess hot melt is squeezed out and hardened, and the excess material cleaning device 62 cleans the excess material.

[0075] The smoothing device 61 includes a cooling block 611 and a positioning ring 612. The cooling block 611 is externally connected to a heat exchange device and has a coolant flowing inside. The positioning ring 612 is arranged on the outer ring of the cooling block 611 and the bottom end of the positioning ring 612 is flush with the bottom end of the cooling block 611.

[0076] During the downward pressing process of the cooling block 611, the positioning ring 612 first contacts the edge of the injection molded part and determines the thickness of the injection molded part. Then, when the cooling block 611 is pressed down to be flush with the positioning ring 612, it is restricted by the positioning ring 612 and cannot be pressed down further, thereby ensuring the smoothing thickness.

[0077] The residual material cleaning device 62 includes a scraper 621 and a grinding device 622, and the scraper 621 and the grinding device 622 are arranged to move along the trimmed surface of the injection molded part. The blade of the scraper 621 is flush with the trimmed surface of the injection molded part and cuts off the excess hot melt on the trimmed surface of the injection molded part during the movement. The grinding device 622 is a drum grinding wheel and grinds the undulations of the trimmed surface of the injection molded part by rolling and rotating.

[0078] Reference Figure 1-Figure 3 The monitoring device 7 includes a camera 71, a positioning sensor 72 and a temperature sensor 73. The camera 71 is fixedly installed on one side above the fixture 2 and the camera direction is toward the fixture 2. The positioning sensor 72 is respectively installed on the moving components of the fixture 2, the material moving device 3, the preparatory processing device 4, the injection device 5 and the shaping device 6 to monitor and control the moving distance and the swing angle. The temperature sensor 73 is respectively installed on the preparatory processing device 4, the injection device 5 and the shaping device 6 to monitor and control the temperature of the heating or cooling components. The camera 71, the positioning sensor 72 and the temperature sensor 73 communicate with the external control computer respectively.

[0079] The camera 71 monitors the processing screen, and the operator helps the equipment to identify the injection defect location by clicking the injection defect location in the monitoring screen.

[0080] Embodiment 5:

[0081] Reference Figure 1-Figure 3 The support device 1 includes a work surface 11, a support frame 12 and a protective shell 13. The work surface 11 is fixedly installed horizontally through the support frame 12, and the protective shell 13 and the work surface 11 form a closed box;

[0082] The work table 11 is provided with a table slide rail 111 and a positioning block 112. The table slide rail 111 is horizontally installed below the shaping device 6. One end of the table slide rail 111 extends out of the protective shell 13 and corresponds to the loading position of the material moving device 3.

[0083] The support frame 12 includes legs 121 and a storage cabinet 122. The storage cabinet 122 is provided at the bottom of the work surface 11. Legs 121 are installed at the four corners of the bottom of the storage cabinet 122. The length of the legs 121 can be adjusted by adjusting bolts.

[0084] The protective shell 13 is provided with a door panel 131 and an observation window 132 . The door panel 131 and the observation window 132 are made of transparent material and are movably opened and closed and installed on the side of the protective shell 13 .

[0085] Reference Figure 1-Figure 3 The fixture 2 includes a bottom mold fixture 21 and a top mold fixture 22. The bottom mold fixture 21 is slidably mounted on the table slide rail 111, and the top mold fixture 22 is telescopically mounted above the moving position of the bottom mold fixture 21;

[0086] The bottom mold fixture 21 is installed on the installation slide block 211 through the adjustment plate 213. The installation slide block 211 is slidably installed on the table slide rail 111 through the slide transmission 212. The adjustment plate 213 is controlled to adjust the installation height and installation angle through the adjustment bolt 214.

[0087] The top mold fixture 22 is installed by lifting through a telescopic rod 222 , and the installation angle of the top mold fixture 22 is controlled and adjusted through a mounting bolt 221 .

[0088] Reference Figure 1-Figure 3 The material transfer device 3 includes a material rack 31 and a material transfer robot 32. The material rack 31 is fixedly mounted on one side of the work surface 11. The material transfer robot 32 is mounted between the material rack 31 and the work surface 11 and moves the injection molded parts to be trimmed from the material rack 31 to the bottom mold fixture 21 on the work surface 11.

[0089] The material rack 31 is movably provided with a conveyor rack 311 and a positioning push rod 312. The conveyor rack 311 is provided with a conveyor belt to transport the injection molded parts to be trimmed. The end of the conveyor belt on the conveyor rack 311 is provided with a positioning push rod 312 to move the injection molded parts to be trimmed to a predetermined material transfer position.

[0090] The material transfer robot arm 32 is provided with a feeding suction cup frame 321 . Driven by the material transfer robot arm 32 , the feeding suction cup frame 321 grabs the injection molded part to be trimmed at a predetermined material transfer position and places it on the bottom mold fixture 21 . The material transfer robot arm 32 is rotatably mounted on the ground via a turntable 322 .

[0091] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A defect repair device for automobile interior injection molded parts, characterized in that: The invention comprises a supporting device (1), a fixture (2), a pre-processing device (4) and an injection device (5), wherein the fixture (2), the pre-processing device (4) and the injection device (5) are respectively mounted on the supporting device (1) and mounted on the ground through the supporting device (1), and the pre-processing device (4) and the injection device (5) move in a processing operation direction toward the fixture (2) and perform trimming, pre-processing and repair processing on the injection molded part fixed on the fixture (2); A material transfer device (3) is installed on one side of the support device (1), and the material transfer device (3) transfers the injection molded part to be trimmed to the fixture (2); The support device (1) is also equipped with a shaping device (6) and a monitoring device (7), wherein the shaping device (6) performs overall plastic shaping on the plastic part after the repair process by the injection device (5), and the monitoring device (7) monitors and assists in controlling the processing of the preparatory processing device (4), the injection device (5) and the shaping device (6); The preparatory processing device (4) comprises a heating device (41), a cutting device (42) and an edge grinding device (43); the heating device (41), the cutting device (42) and the edge grinding device (43) are respectively telescopically installed up and down and can be swung in translation; the heating device (41) heats and softens the edge of the defect of the injection molded part through a heating resistance wire; the cutting device (42) cuts the defect into a simple geometric shape by cutting the material of the defect of the injection molded part; and the edge grinding device (43) smoothes the edge of the defect of the injection molded part by grinding the material of the defect of the injection molded part; The heating device (41) comprises a heating wire (411) and a protective cover (412); the protective cover (412) is wrapped around the outside of the heating wire (411) and controls the heating wire (411) to be exposed and closed by telescoping; the heating wire (411) radiates heat toward a defect of the injection molded part in an exposed state, thereby heating the material at the defect of the injection molded part until it softens; The cutting device (42) comprises a cutting knife (421) and a material sucker (422), wherein the cutting knife (421) removes excess material from defects of the injection molded part by rotary cutting or downward shearing to form a standard geometric shape, wherein the standard geometric shape comprises a circle, a rectangle and an ellipse, and the material sucker (422) is installed at the center of the cutting knife (421) and is externally connected to a negative pressure machine; The edge grinding device (43) comprises an edge grinding wheel (431) and an edge grinding motor (432); the edge grinding wheel (431) is drivingly connected to the edge grinding motor (432) and controls the edge grinding along the defect of the injection molded part, thereby grinding the defect of the injection molded part into a transition arc shape.

2. The defect repair device for automobile interior injection molded parts according to claim 1, characterized in that: The injection device (5) comprises a material box (51), an injection head (52) and an injection support (53); the material box (51) is connected to the injection head (52) via a material delivery pipeline; the injection head (52) extrude hot melt material for repairing toward a defect of the injection molded part; the material box (51) and the injection head (52) are installed above the tooling fixture (2) via the injection support (53) so as to be telescopic, translationally movable and swingable.

3. The defect repairing device for automobile interior injection molded parts according to claim 2, characterized in that: A heating rod (511) and a stirring rod (512) are installed in the material box (51); the heating rod (511) is externally connected to an electric heating device and heats the hot melt in the material box (51) by electric heating; the stirring rod (512) is rotatably installed in the material box (51) and continuously stirs the hot melt in the material box (51); An injection valve (521) and a telescopic box (522) are installed on the pipeline connecting the injection head (52) and the material box (51); the injection valve (521) controls the discharge and closure of the injection head (52) through electric control; the telescopic box (522) controls the internal capacity of the telescopic box (522) through electric control stretching and controls the hot melt in the telescopic box (522) through electric control compression to be extruded through the injection head (52); The injection support (53) comprises a conversion frame (531) and a telescopic frame (532); the conversion frame (531) is mounted on one side of the fixture (2) in a swing-controlled manner; the preparatory processing device (4) and the injection device (5) are mounted on the conversion frame (531) in a telescopic manner up and down via the telescopic frame (532).

4. The defect repairing device for automobile interior injection molded parts according to claim 1, characterized in that: The shaping device (6) comprises a smoothing device (61) and a residual material cleaning device (62), wherein the smoothing device (61) and the residual material cleaning device (62) are respectively installed above the fixture (2) in a telescopic manner upward and downward, wherein the smoothing device (61) presses the hot melt material evenly and fills the defects of the injection molded part evenly, and the residual material cleaning device (62) removes the defects of the injection molded part by cutting and fills the excess hot melt material after trimming; The smoothing device (61) comprises a cooling block (611) and a positioning ring (612); the cooling block (611) is externally connected to a heat exchange device and has a coolant flowing therein; the positioning ring (612) is arranged on the outer ring of the cooling block (611) and the bottom end of the positioning ring (612) is flush with the bottommost movable end of the cooling block (611); The residual material cleaning device (62) comprises a scraper (621) and a grinding device (622), wherein the scraper (621) and the grinding device (622) are arranged to move along the trimmed surface of the injection molded part, the blade of the scraper (621) is flush with the trimmed surface of the injection molded part and scrapes off excess hot melt material on the trimmed surface of the injection molded part during movement, and the grinding device (622) is a drum-type grinding wheel and grinds the undulations of the trimmed surface of the injection molded part by rolling and rotating.

5. The defect repairing device for automobile interior injection molded parts according to claim 1, characterized in that: The monitoring device (7) comprises a camera (71), a positioning sensor (72) and a temperature sensor (73); the camera (71) is fixedly mounted on one side above the fixture (2) and the camera direction is toward the fixture (2); the positioning sensor (72) is respectively mounted on the moving components of the fixture (2), the material moving device (3), the preparatory processing device (4), the injection device (5) and the shaping device (6) and monitors and controls the moving distance and the swing angle; the temperature sensor (73) is respectively mounted on the preparatory processing device (4), the injection device (5) and the shaping device (6) and monitors and controls the temperature of the heating or cooling components; the camera (71), the positioning sensor (72) and the temperature sensor (73) respectively communicate with an external control computer.

6. The defect repairing device for automobile interior injection molded parts according to claim 1, characterized in that: The support device (1) comprises a work surface (11), a support frame (12) and a protective shell (13); the work surface (11) is fixedly installed horizontally via the support frame (12); and the protective shell (13) and the work surface (11) form a closed box; A table slide rail (111) and a positioning block (112) are installed on the work table (11); the table slide rail (111) is installed horizontally and transversely below the shaping device (6); one end of the table slide rail (111) extends out of the protective shell (13) and corresponds to the loading position of the material moving device (3); The support frame (12) comprises a support leg (121) and a storage cabinet (122); the storage cabinet (122) is arranged at the bottom of the work surface (11); support legs (121) are installed at the four corners of the bottom of the storage cabinet (122); the length of the support leg (121) is adjusted by adjusting bolts; A door panel (131) and an observation window (132) are opened and installed on the protective shell (13); the door panel (131) and the observation window (132) are made of transparent material and are movably opened and closed and installed on the side of the protective shell (13).

7. The defect repairing device for automobile interior injection molded parts according to claim 6, characterized in that: The tooling fixture (2) comprises a bottom mold fixture (21) and a top mold fixture (22); the bottom mold fixture (21) is slidably mounted on a table slide rail (111); and the top mold fixture (22) is telescopically mounted above a moving position of the bottom mold fixture (21); The bottom mold fixture (21) is mounted on the mounting slide block (211) via an adjustment plate (213); the mounting slide block (211) is slidably mounted on the table slide rail (111) via a slide block transmission (212); the adjustment plate (213) is controlled to adjust the mounting height and mounting angle via an adjustment bolt (214); The top mold fixture (22) is installed by lifting and lowering via a telescopic rod (222), and the installation angle of the top mold fixture (22) is controlled and adjusted via a mounting bolt (221).

8. The defect repairing device for automobile interior injection molded parts according to claim 7, characterized in that: The material transfer device (3) comprises a material storage rack (31) and a material transfer mechanical arm (32), wherein the material storage rack (31) is fixedly mounted on one side of a work surface (11), and the material transfer mechanical arm (32) is mounted between the material storage rack (31) and the work surface (11) and is configured to transfer the injection molded part to be trimmed from the material storage rack (31) to a bottom mold fixture (21) on the work surface (11); A conveyor frame (311) and a positioning push rod (312) are movably mounted on the material rack (31); a conveyor belt is mounted on the conveyor frame (311) to transport the injection molded parts to be trimmed; a positioning push rod (312) is mounted at the end of the conveyor belt on the conveyor frame (311); the positioning push rod (312) moves the injection molded parts to be trimmed to a predetermined material transfer position; The material transfer mechanical arm (32) is mounted with a feeding suction cup frame (321). Driven by the material transfer mechanical arm (32), the feeding suction cup frame (321) grabs the injection molded part to be trimmed at a predetermined material transfer position and places it on the bottom mold fixture (21). The material transfer mechanical arm (32) is mounted on the ground for rotation via a rotating table (322).

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