Injection molding part parting line repairing device and using method thereof

Abstract

The invention relates to the technical field of automobile part machining, and discloses an injection molding part parting line repairing device and a using method thereof.The injection molding part parting line repairing device comprises a grinding mechanism and a repairing mechanism, the grinding mechanism comprises a mounting frame, a plurality of guide wheels are rotationally mounted on the mounting frame, the guide wheels are sleeved with a grinding belt, and the grinding belt is provided with a grinding area; the polishing mechanism is mounted in the water storage tank, and the polishing area is immersed in water in the water storage tank; and the driving mechanism is used for driving the shell to be polished in the polishing area. According to the injection molding part parting line repairing device and the using method thereof, the injection molding part is driven by the driving mechanism to be ground on the grinding mechanism, assembly line grinding machining is formed, the grinding and repairing efficiency of the injection molding part parting line is greatly improved, the underwater grinding mode is adopted, and the grinding and repairing efficiency is greatly improved. And shaking of the grinding belt in the grinding area is reduced through resistance of water, and the grinding process is precisely controlled through the mechanical arm, so that the grinding and repairing precision of the parting line of the injection molding part is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and more specifically, to a parting line repair device for injection molded parts and its usage method. Background Technology

[0002] As a critical safety component of automobiles, rearview mirrors are typically made of plastic materials such as ABS, PC / ABS alloy, and PP+glass fiber, and are mass-produced through injection molding. During the injection molding process, due to factors such as mold closing gaps, injection pressure fluctuations, and differences in melt flow, molding defects such as flash, protrusions, and burrs inevitably occur at the parting line of the rearview mirror housing. These defects not only damage the appearance integrity of the rearview mirror housing but may also affect subsequent assembly accuracy, leading to uneven gaps between the rearview mirror and the vehicle body, reduced sealing performance, and even wind noise during vehicle operation. Therefore, after injection molding, the parting line of the rearview mirror housing must be polished and repaired to ensure a smooth and even finish, meeting the product's appearance and assembly requirements.

[0003] Currently, the industry mainly uses manual grinding to repair the parting line of automotive rearview mirror housings. However, manual grinding is very inefficient and often has poor precision, making it difficult to meet the needs of large-scale, high-precision production. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the prior art and provide a device for repairing the parting line of injection molded parts by underwater grinding and repairing the outer shell using a robot, and a method for using the device.

[0005] To achieve the above objectives, the technical solution of the present invention is to provide a parting line repair device for injection molded parts, comprising: A polishing mechanism includes a mounting frame on which a plurality of guide wheels are rotatably mounted, and a polishing belt is fitted on the plurality of guide wheels, the polishing belt having a polishing area. A water storage tank, in which the grinding mechanism is installed, and the water in the water storage tank submerges the grinding area; The drive mechanism includes a robotic arm connected to a clamping assembly, and the drive mechanism is used to drive the housing to be polished in the polishing area.

[0006] Preferably, the clamping assembly includes a fixed jaw, a movable jaw, and a telescopic drive component. The fixed jaw is fixedly connected to the end of the robotic arm, and one end of the telescopic drive component is fixedly connected to the fixed jaw, while the other end is fixedly connected to the movable jaw. This design allows the housing to be clamped and its movement controlled for grinding and repair through the cooperation of the fixed and movable jaws.

[0007] Preferably, the injection molded parting line repair device further includes a conveying mechanism, which includes a first conveyor. Multiple spaced first positioning seats are fixedly installed on the conveyor belt of the first conveyor. Each first positioning seat has a first contouring groove for accommodating the outer shell, and the first contouring groove contains a receiving groove corresponding to the parting line of the outer shell. This design facilitates precise clamping of the outer shell by the clamping components, enabling automated grinding and repair of the outer shell.

[0008] Preferably, the injection molded parting line repair device further includes an output mechanism, which comprises a second conveyor. Multiple spaced second positioning seats are fixedly installed on the conveyor belt of the second conveyor, and each second positioning seat has a second contouring slot for accommodating the outer casing. This design facilitates subsequent assembly line processing of the outer casing.

[0009] Preferably, a fixing plate is fixedly mounted on the mounting bracket, and a pad that fits against the grinding belt is connected to the fixing plate near the grinding belt. The pad corresponds to the grinding area, and the distance between the pad and the fixing plate is adjustable by an adjusting component. This design helps to further improve the grinding accuracy and facilitates the adjustment of grinding pressure.

[0010] Preferably, the adjusting component includes a screw and a locking sleeve. The screw is threadedly connected to the fixed plate and rotatably connected to the pad. The locking sleeve is threadedly connected to the screw and abuts against the fixed plate. This design makes the adjustment of the distance between the pad and the fixed plate simple and reliable.

[0011] Preferably, the polishing belt includes several sanding belts with different grit sizes, which are fitted onto the guide wheel and arranged sequentially along the axial direction of the guide wheel. This design helps to improve the quality of polishing and repairing the parting line of the outer casing.

[0012] Preferably, a high-pressure fluid spray gun is fixedly installed on the inner wall of the water storage tank, positioned above the liquid surface of the water storage tank, with its nozzle facing the grinding surface of the grinding belt. This design facilitates the removal of grinding particles adhering to the grinding belt.

[0013] Preferably, the bottom of the water storage tank is connected to one end of an inlet pipe and an outlet pipe, and the other ends of both the inlet and outlet pipes are connected to a filter. This design is beneficial for filtering abrasive particles from the water storage tank.

[0014] A parting line repair device for injection molded parts and its method of use, comprising the following steps: S1. The drive mechanism moves above the conveying assembly and clamps the housing; S2. The driving mechanism removes the outer shell from the first contouring slot of the first positioning seat and controls the defect at the parting line of the outer shell to abut against the grinding strip of the grinding area to repair the defect of the outer shell. S3. The drive mechanism places the housing on the output mechanism, and the drive mechanism releases the housing; S4, repeat S1-S3.

[0015] The beneficial effects of this invention are as follows: By using the injection molding parting line repair device and its method described in this invention, the injection molding part is driven by a drive mechanism to be polished on a polishing mechanism, forming a production line polishing process, which greatly improves the polishing and repair efficiency of the injection molding parting line. By adopting underwater polishing, the resistance of water is used to reduce the shaking of the polishing belt in the polishing area. Combined with the precise control of the polishing process by the robotic arm, the polishing and repair accuracy of the injection molding parting line is greatly improved, which is conducive to meeting the production needs of large-volume and high-precision injection molding parts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the injection molding parting line repair device; Figure 2 This is a schematic diagram of the first three-dimensional structure of the grinding mechanism; Figure 3 This is a schematic diagram of the second three-dimensional structure of the grinding mechanism (excluding the grinding belt); Figure 4 This is a three-dimensional structural diagram of the drive mechanism; Figure 5 This is a three-dimensional structural diagram of the clamping component; Figure 6 This is a three-dimensional structural diagram of the outer shell (the arrows in the diagram indicate the grinding direction of the shell parting line); Figure 7 This is a three-dimensional structural diagram of the first positioning seat; Figure 8 This is a three-dimensional structural diagram of the second positioning seat; Figure 9 This is a partial three-dimensional structural diagram of the grinding mechanism; Figure 10 This is a front sectional view of the grinding mechanism and the water storage tank (the dotted line in the figure indicates the liquid level in the water storage tank). Figure 11 It is a three-dimensional structural diagram of the collection mechanism; Figure 12 This is a rear sectional view of the collection mechanism; Figure 13 This is a right-side cross-sectional view of the collection facility; Figure 14 This is a 3D structural diagram of the collection box; Figure 15 This is a 3D structural diagram of the airbag and slider (after the airbag has been deflated). Figure 16 yes Figure 15 Right sectional view; Figure 17 This is a 3D structural diagram of the airbag and slider (after the airbag is fully inflated). Figure 18 yes Figure 17 A partial right-side sectional view.

[0017] In the diagram: 1. Grinding mechanism; 11. Mounting bracket; 12. Guide wheel; 120. Positioning groove; 121. Drive wheel; 122. Tensioning wheel; 123. Driven wheel; 13. Grinding belt; 130. Grinding area; 131. First sanding belt; 132. Second sanding belt; 133. Third sanding belt; 14. Fixing plate; 15. Pad plate; 151. Guide rod; 16. Adjusting component; 161. Screw; 162. Locking nut; 163. Handle; 2. Water storage tank; 21. High-pressure fluid spray gun; 22. Inlet pipe; 23. Outlet pipe; 24. Filter; 3. Drive mechanism; 31. Robotic arm; 32. Gripping assembly; 321. Fixed jaw; 3211. Clearance groove; 322. Moving jaw; 3221. Guide rod; 323. Telescopic drive component; 4. Conveying mechanism; 41. First conveyor; 42. First positioning seat; 421. First contouring slot; 422. Receiving slot; 5. Output mechanism; 51. Second conveyor; 52. Second positioning seat; 521. Second contouring slot; 6. Outer shell; 7. Collection mechanism; 71. Collection box; 711. Slide chute; 712. Discharge port; 72. Airbag; 721. Corrugated hose; 722. Support frame; 723. Sealing plate; 724. Connection port; 73. Slider; 731. Ball bearing; 74. Guide plate; 75. Cover plate; 76. Permanent magnet. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] To better understand this invention, the following is combined with... Figures 1-18 This invention provides a detailed description of a parting line repair device for injection molded parts and its usage method.

[0020] Example 1: like Figures 1-6 As shown, a parting line repair device for injection molded parts includes: The grinding mechanism 1 includes a mounting frame 11, on which a plurality of guide wheels 12 are rotatably mounted, and a grinding belt 13 is sleeved on the plurality of guide wheels 12, and the grinding belt 13 is provided with a grinding area 130. Water storage tank 2, grinding mechanism 1 is installed in water storage tank 2, water in water storage tank 2 immerses grinding area 130; The drive mechanism 3 includes a robotic arm 31, which is connected to a clamping assembly 32. The drive mechanism 3 is used to drive the housing 6 to be polished in the polishing area 130.

[0021] It should be noted that "several" refers to two or more, that is, at least two guide wheels 12 are provided, and the grinding belt 13 abuts against the outer peripheral wall of each guide wheel 12. The rotation of the guide wheels 12 drives the grinding belt 13 to make a cyclical motion. In this invention, the injection molded part refers to the housing 6 of the car rearview mirror. The injection molded part parting line repair device of this invention can also be used to grind and repair other types of injection molded parts. The clamping assembly 32 clamps and fixes the outer shell 6. The robotic arm 31 moves the outer shell 6 by controlling the movement of the clamping assembly 32, so that the parting line of the outer shell 6 is aligned with the grinding area 130. By moving the outer shell 6, the defects (including flash, protrusions, burrs, etc.) at the parting line of the outer shell 6 come into contact with the grinding area 130, thereby cleaning the defects along the extension direction of the parting line. There is no need for employees to constantly observe and adjust the grinding, which greatly improves the grinding efficiency and is conducive to meeting the needs of mass production. During the cyclical motion of the grinding belt 13 driven by the guide wheel 12, the grinding belt 13 inevitably experiences swaying perpendicular to its surface. This swaying is often caused by various factors, such as improper installation of the guide wheel 12, aging and wear of the grinding belt 13 leading to tension changes and instability, and impact of the workpiece on the grinding belt 13 during grinding. Grinding pressure cannot completely suppress the swaying of the grinding belt 13. By designing the grinding zone 130 to be underwater, the resistance of the water can effectively reduce the swaying of the grinding belt 13 in the grinding zone 130, thereby improving the grinding accuracy of the grinding belt 13 on the outer shell 6. On the other hand, the grinding heat generated during the grinding of the outer shell 6 can be quickly transferred to the water and then to the external environment. This can effectively prevent the parting line area of ​​the outer shell 6 from softening or even deforming due to overheating, which would affect the grinding and dimensional accuracy of the outer shell 6 and help meet the high-precision production requirements. Specifically, softening of the outer shell 6 will lead to a reduction in grinding pressure, making it impossible to achieve the expected grinding effect. Moreover, the softened material will stick to the grinding belt 13 during the grinding process, causing the grinding belt 13 to fail locally. In addition, underwater grinding can also reduce the noise generated by grinding, which is beneficial to protecting the physical and mental health of employees.

[0022] In this embodiment, four guide wheels 12 are provided, including one active wheel 121, one tensioning wheel 122 and two driven wheels 123 rotatably mounted on the mounting frame 11. The active wheel 121 is driven by a motor, which is located above the liquid surface of the water storage tank 2. The two driven wheels 123 are located on the side of the mounting frame 11 near the drive mechanism 3. The grinding area 130 is located between the two driven wheels 123. The robotic arm 31 is set outside the water storage tank 2. The precise adjustment of the robotic arm 31 to the outer shell 6 is conducive to the grinding and repair of the parting line on the curved surface of the outer shell 6. The robotic arm 31 adopts a six-axis robot.

[0023] By using the injection molding parting line repair device of the present invention, the injection molding part is driven by the drive mechanism 3 to be polished on the polishing mechanism 1, forming a production line polishing process, which greatly improves the polishing and repair efficiency of the injection molding parting line. By adopting underwater polishing, the resistance of water is used to reduce the shaking of the polishing belt 13 in the polishing area 130. Combined with the precise control of the polishing process by the robotic arm 31, the polishing and repair accuracy of the injection molding parting line is greatly improved, which is conducive to meeting the production needs of large-volume and high-precision injection molding parts.

[0024] Example 2: As an optimization of Example 1, such as Figure 4 and Figure 5 As shown, the clamping assembly 32 includes a fixed jaw 321, a movable jaw 322, and a telescopic drive member 323. The fixed jaw 321 is fixedly connected to the end of the robotic arm 31. One end of the telescopic drive member 323 is fixedly connected to the fixed jaw 321, and the other end is fixedly connected to the movable jaw 322.

[0025] It should be noted that the fixed end of the telescopic drive 323 is fixedly connected to the fixed claw 321, and the output end of the telescopic drive 323 is fixedly connected to the movable claw 322. The telescopic drive 323 can be configured as a cylinder, hydraulic cylinder or electric push rod. The extension and retraction of the telescopic drive 323 can control the cooperation between the fixed claw 321 and the movable claw 322, thereby clamping or releasing the injection molded part.

[0026] In this embodiment, the fixed claw 321 is configured as an inner support block that conforms to the inner cavity of the outer shell 6. The inner support block provides support to the outer shell 6, thereby preventing the area near the parting line of the outer shell 6 from deforming inward under stress during the grinding process, which would affect the grinding accuracy and quality. The inner support block slides with the outer shell 6, so that the robotic arm 31 can control the inner support block to insert into the inner cavity of the outer shell 6 and provide multi-directional limiting and support for the outer shell 6. The inner support block is provided with multiple clearance grooves 3211 to prevent interference between the outer shell 6 and the inner support block when the inner support block is inserted into the outer shell 6. The movable claw 322 is configured as... A limiting block conforms to the outer surface of the outer shell 6, and the guide rod 3221 of the moving jaw 322 passes through the fixed jaw 321 and slides and guides the fixed jaw 321. The output end of the telescopic drive 323 is fixedly connected to the guide rod 3221. The telescopic drive 323 controls the guide rod 3221 to slide relative to the fixed jaw 321 along the length direction of the guide rod 3221, thereby controlling the fixed jaw 321 and the moving jaw 322 to clamp or release the outer shell 6. The guide rod 3221 helps to ensure the accuracy and stability of clamping, and thus helps to ensure the accuracy of grinding.

[0027] Example 3: As an optimization of Example 2, such as Figure 1 and Figure 7 As shown, the injection molding part parting line repair device also includes a conveying mechanism 4. The conveying mechanism 4 includes a first conveyor 41. Multiple first positioning seats 42 are fixedly installed on the conveyor belt of the first conveyor 41 at intervals. The first positioning seat 42 is provided with a first contouring slot 421 for accommodating the outer shell 6. The first contouring slot 421 is provided with a receiving slot 422 corresponding to the parting line of the outer shell 6.

[0028] It should be noted that the first positioning seat 42 is set at equal intervals along the conveying direction of the conveyor belt of the first conveyor 41. The first contouring slot 421 fixes the position of the shell 6 to be polished by conforming to the shell 6. The receiving slot 422 is set on the slot wall of the first contouring slot 421. The receiving slot 422 is used to accommodate defects at the parting line of the shell 6, ensuring the accuracy of the position of the shell 6 fixed in the first contouring slot 421. This ensures that the robotic arm 31 can drive the clamping component 32 to accurately clamp the shell 6, so as to facilitate the assembly line processing of the shell 6 and improve the polishing efficiency of the parting line of the shell 6. The first conveyor 41 transmits intermittently to facilitate the clamping component 32 to clamp the shell 6.

[0029] In this embodiment, the first contouring slot 421 is disposed on the top of the first positioning seat 42. The area of ​​the outer shell 6 being clamped by the clamping component 32 is located at the end of the outer shell 6 away from its own parting line. After the outer shell 6 is fixed in the first contouring slot 421, the area of ​​the outer shell 6 being clamped by the clamping component 32 extends out of the first contouring slot 421, so that the clamping component 32 can clamp the outer shell 6 and avoid interference between the clamping component 32 and the first positioning seat 42.

[0030] Example 4: As an optimization of Example 3, such as Figure 1 and Figure 8 As shown, the injection molding parting line repair device also includes an output mechanism 5. The output mechanism 5 includes a second conveyor 51. Multiple second positioning seats 52 are fixedly installed on the conveyor belt of the second conveyor 51 at intervals. The second positioning seats 52 are provided with second contour slots 521 for accommodating the outer shell 6.

[0031] It should be noted that the conveying direction of the second conveyor 51 is opposite to that of the first conveyor 41. The second positioning seats 52 are equally spaced along the conveying direction of the conveyor belt of the second conveyor 51. The second contouring slot 521 fixes the position of the polished shell 6 by conforming to the shell 6, thereby ensuring that the robotic arm 31 can drive the clamping assembly 32 to accurately place the shell 6 into the second contouring slot 521. The second conveyor 51 transmits intermittently so that the clamping assembly 32 can place the shell 6 into the second contouring slot 521. By setting the output mechanism 5, the subsequent assembly line processing of the shell 6 can be facilitated.

[0032] In this embodiment, the water storage tank 2 and the drive mechanism 3 are both located between the conveying mechanism 4 and the output mechanism 5. The second contouring slot 521 is located on the top of the second positioning seat 52. After the outer shell 6 is placed in the second contouring slot 521, the area of ​​the outer shell 6 that is clamped by the clamping component 32 extends out of the second contouring slot 521, thereby avoiding interference between the clamping component 32 and the second positioning seat 52.

[0033] Example 5: As an optimization of Example 4, such as Figure 2 , Figure 3 and Figure 9 As shown, a fixing plate 14 is fixedly installed on the mounting bracket 11. A pad 15 that fits against the grinding belt 13 is connected to the side of the fixing plate 14 near the grinding belt 13. The pad 15 corresponds to the grinding area 130. The distance between the pad 15 and the fixing plate 14 is adjusted by the adjusting member 16.

[0034] It should be noted that both the fixing plate 14 and the pad 15 are located inside the annular grinding belt 13. The pad 15 is in contact with the non-grinding surface of the grinding belt 13. During the grinding and repair process of the outer shell 6, the grinding belt 13 of the grinding area 130 is located between the pad 15 and the outer shell 6. By setting the pad 15, the pad 15 and the grinding belt 13 are in surface contact. The pressure of the grinding belt 13 acting on the parting line is borne and transmitted by the pad 15 as a whole, and there will be no sudden increase or decrease in local pressure. This can avoid the problems of over-grinding, edge chipping, and surface roughening of the outer shell 6 due to uneven pressure, and ensure that the parting line is in harmony with the original outer shell 6 after grinding. The surfaces are flush to ensure grinding precision. The grinding surface of the section where the grinding belt 13 contacts the pad 15 is the grinding area 130. Under the constraint of the support plane of the pad 15, the grinding belt 13 in the grinding area 130 moves in a straight line along the running direction of the grinding belt 13, which helps to further ensure the stability of the running of the grinding belt 13 in the grinding area 130. In addition, by adjusting the distance between the pad 15 and the fixed plate 14 through the adjusting component 16, the grinding pressure during the grinding process can be adjusted while the grinding path controlled by the robotic arm 31 to move the housing 6 remains unchanged, so as to adapt to the grinding of injection molded parts of different materials.

[0035] Example 6: As an optimization of Example 5, such as Figure 3 and Figure 9 As shown, the adjusting component 16 includes a screw 161 and a locking sleeve 162. The screw 161 is threadedly connected to the fixing plate 14 and rotatably connected to the pad 15. The locking sleeve 162 is threadedly connected to the screw 161 and abuts against the fixing plate 14.

[0036] It should be noted that the fixing plate 14 is provided with a threaded hole that engages with the screw 161. The screw 161 passes through the threaded hole and is rotatably connected to the center of the pad 15. By rotating the screw 161, the distance between the pad 15 and the fixing plate 14 can be adjusted. After the distance between the two is adjusted, the locking sleeve 162 is tightened so that the locking sleeve 162 abuts against the side of the fixing plate 14 away from the pad 15, thus locking the position of the screw 161. This ensures that the distance between the pad 15 and the fixing plate 14 is constant, thereby ensuring the stability of the grinding pressure and further improving the grinding accuracy.

[0037] In this embodiment, guide rods 151 that are slidably connected to the four corners of the pad 15 near the fixed plate 14 are fixedly connected to the four corners of the fixed plate 14. All four guide rods 151 pass through the fixed plate 14. Through the sliding guide cooperation between the four guide rods 151 and the fixed plate 14, the stability of the distance adjustment between the pad 15 and the fixed plate 14 can be ensured. A handle 163 is fixedly connected to the end of the screw 161 away from the pad 15 so as to facilitate manual rotation of the adjusting screw 161.

[0038] Example 7: As an optimization of Example 6, such as Figure 2 and Figure 3 As shown, the grinding belt 13 includes several sanding belts with different mesh sizes that are set on the guide wheel 12, and the several sanding belts are arranged sequentially along the axial direction of the guide wheel 12.

[0039] It should be noted that "several" refers to two or more, that is, at least two sets of sanding belts are set, and each sanding belt has a different grit, so that the defects at the parting line of the outer shell 6 are polished to different degrees. The grit range of the sanding belts is 80-800 grit. The outer shell 6 is first polished on the sanding belt with a smaller grit, and then polished on the sanding belt with a larger grit, so as to gradually polish the outer shell 6 more finely. This ensures both the efficiency and the fineness of the polishing, which is conducive to improving the quality of the polishing and repair of the parting line of the outer shell 6.

[0040] In this embodiment, the axes of the drive wheel 121, tension wheel 122, and driven wheel 123 are parallel to each other and perpendicular to the running direction of the sanding belt. The outer rings of the drive wheel 121, tension wheel 122, and driven wheel 123 are each provided with three annular positioning grooves 120 for accommodating the sanding belt. There are three sets of sanding belts, and the three sets of sanding belts correspond one-to-one with the three positioning grooves 120 on each guide wheel 12. The design of the positioning grooves 120 is conducive to the precise installation of the sanding belt, thereby ensuring the precise cooperation between the grinding mechanism 1 and the drive mechanism 3 to precisely grind the outer shell 6. Along the direction away from the mounting frame 11, a first sanding belt 131, a second sanding belt 132, and a third sanding belt 133 with increasing grit are arranged in sequence. The first sanding belt 131 has a grit of 120, the second sanding belt 132 has a grit of 320, and the third sanding belt 133 has a grit of 600. The outer shell 6 is subjected to rough grinding, medium grinding, and fine grinding on the first sanding belt 131, the second sanding belt 132, and the third sanding belt 133 in sequence. The grinding and repair effect of the outer shell 6 is better. When the outer shell 6 is ground on the sanding belt with a smaller grit, the friction and collision between the outer shell 6 and the sanding belt are more intense. By designing the sanding belt with a smaller grit to be closer to the mounting frame 11, the impact on the overall stability of the grinding mechanism 1 when the outer shell 6 is ground on the sanding belt with a smaller grit is smaller, which is conducive to improving the stability and reliability of grinding.

[0041] Example 8: As an optimization of Example 7, such as Figure 1 As shown, a high-pressure fluid spray gun 21 is fixedly installed on the inner wall of the water storage tank 2. The high-pressure fluid spray gun 21 is located above the liquid surface of the water storage tank 2, and the spray nozzle of the high-pressure fluid spray gun 21 faces the grinding surface of the grinding belt 13.

[0042] It should be noted that the high-pressure fluid spray gun 21 is located on the outside of the polishing belt 13. The high-pressure fluid spray gun 21 cleans the polishing surface of the polishing belt 13 by spraying high-pressure fluid, removing the polishing particles attached to the polishing belt 13, and ensuring the long-term effectiveness of the polishing belt 13. The high-pressure fluid sprayed by the high-pressure fluid spray gun 21 is high-pressure water or high-pressure air. Preferably, the angle between the spray direction of the high-pressure fluid spray gun 21 and the running direction of the polishing belt 13 is 30°-60°, so as to ensure the cleaning effect while avoiding excessive impact on the polishing belt 13.

[0043] In this embodiment, three sets of high-pressure fluid spray guns 21 are provided, each corresponding to a first sanding belt 131, a second sanding belt 132, and a third sanding belt 133. The high-pressure fluid spray guns 21 spray high-pressure water jets, and the grinding belt 13 runs clockwise. The drive wheel 121, tension wheel 122, upper driven wheel 123, and lower driven wheel 123 are arranged in a clockwise direction. The nozzle of the high-pressure fluid spray gun 21 faces the grinding belt 13 between the drive wheel 121 and the lower driven wheel 123. Part of this section of the grinding belt 13 is underwater, and part is above the water. During the operation of the grinding mechanism 1, this section of the grinding belt 13 will carry some water above the liquid surface. The water jets from the high-pressure fluid spray guns 21 clean this section of the grinding belt 13 and also prevent the grinding belt 13 from carrying water away from the water storage tank 2, thus preventing water splashes outside the water storage tank 2 and avoiding water waste.

[0044] Example 9: As an optimization of Example 8, such as Figure 1 and Figure 10 As shown, the bottom of the water storage tank 2 is connected to one end of the inlet pipe 22 and the outlet pipe 23, and the other ends of the inlet pipe 22 and the outlet pipe 23 are both connected to the filter 24.

[0045] It should be noted that the inlet end of the water inlet pipe 22 and the outlet end of the water outlet pipe 23 are both connected to the water storage tank 2, and the outlet end of the water inlet pipe 22 and the inlet end of the water outlet pipe 23 are both connected to the filter 24. The filter 24 is equipped with a filter screen to block the passage of abrasive particles. The water and abrasive particles in the water storage tank 2 pass through the water inlet pipe 22, the filter 24 and the water outlet pipe 23 in sequence. The abrasive particles are filtered by the filter 24 and the water flows back into the water storage tank 2, thereby ensuring the cleanliness of the water in the water storage tank 2 and preventing excessive abrasive particles from accumulating in the water storage tank 2 and affecting the abrasive grinding mechanism 1's abrasive grinding of the housing. A water pump is installed on the water outlet pipe 23.

[0046] In this embodiment, the inlet end of the water inlet pipe 22 is located at the end of the water storage tank 2 away from the drive mechanism 3, and the outlet end of the water outlet pipe 23 is located at the end of the water storage tank 2 close to the drive mechanism 3. Since the grinding belt 13 runs clockwise, this design is conducive to the grinding particles entering the water inlet pipe 22 and the filter 24 with the water flow, thereby facilitating the timely filtration of the grinding particles in the water storage tank 2.

[0047] Example 10: As an optimization of Example 9, such as Figures 10-18 As shown, the injection molding parting line repair device also includes a collection mechanism 7 installed in the water storage tank 2. The collection mechanism 7 includes a collection box 71. A chute 711 is provided at the top opening of the collection box 71. A sealing component for sealing the top opening of the collection box 71 is provided in the chute 711. The sealing assembly includes an airbag 72 and a slider 73. One end of the airbag 72 is fixedly connected to one end of the slide groove 711, and the other end of the airbag 72 is fixedly connected to the slider 73. The slider 73 is slidably connected to the slide groove 711. The airbag 72 is connected to a bidirectional air pump through an air tube.

[0048] It should be noted that the bidirectional air pump (not shown in the figure) is located outside the water storage tank 2 so as to inflate or de-inflate the air bag 72 through the air pipe (not shown in the figure), thereby driving the slider 73 to slide in the slide groove 711. The top opening of the collection box 71 is aligned with the drop area of ​​the grinding particles. The collection box 71 collects most of the grinding particles generated by grinding, which helps to reduce the filtration burden of the filter 24. The airbag 72 is surrounded by a corrugated hose 721. A support frame 722 is fixed at the crest of the outer ring of the corrugated hose 721. The support frame 722 is slidably connected to the slide groove 711. The two ends of the airbag 72 are sealed by rigid sealing plates 723. One sealing plate 723 is provided with a connection port 724 that communicates with the air tube and is fixedly connected to the inner wall of the collection box 71. The other sealing plate 723 is fixedly connected to the slider 73. When the airbag 72 is inflated, the corrugated hose 721 extends and pushes the slider 73 to slide away from the corrugated hose 721 in the groove 711 until the end face of the slider 73 away from the corrugated hose 721 is in contact with the inner wall of the collection box 71. At this time, the airbag 72 and the slider 73 together block the top opening of the collection box 71, and the top opening of the collection box 71 is completely closed to prevent the abrasive particles in the collection box 71 from floating out from the top opening. When the airbag 72 is deflated, the corrugated hose 721 contracts and drives the slider 73 to slide closer to the corrugated hose 721 in the slide groove 711. The top opening of the collection box 71 opens, and debris can fall into the collection box 71. By setting the corrugated hose 721 and the support frame 722, the opening and closing of the top opening of the collection box 71 can be adjusted by inflating and deflating the airbag 72.

[0049] In this embodiment, both ends of the slider 73 are rotatably equipped with balls 731, and the balls 731 roll against the inner wall of the groove 711. Each end of the slider 73 is equipped with at least two balls 731 to ensure that the slider 73 can slide smoothly in the groove 711. In addition, two guide plates 74 are fixedly installed inside the collection box 71. The two guide plates 74 are inclined downward in a direction that approaches each other. The two guide plates 74 and two opposing inner walls of the collection box 71 form a funnel-shaped structure, which makes it difficult for the grinding particles that fall into the collection box 71 to escape from the collection box 71. Furthermore, the lower part of the collection box 71 is provided with a discharge port 712, and a cover plate 75 is snapped into the discharge port 712. The cover plate 75 and the collection box 71 are connected by magnetic attraction. Specifically, permanent magnets 76 are embedded in the contact surfaces of the cover plate 75 and the collection box 71, so as to ensure that the cover plate 75 is snapped into the discharge port 712 and will not easily fall off. The collection mechanism 7 can be taken out from the water storage tank 2, and the grinding particles in the collection box 71 can be poured out and collected by opening the cover plate 75.

[0050] Example 11: A method for using an injection molded parting line repair device includes the following steps: S1. The drive mechanism 3 moves above the conveying assembly and clamps the housing 6; S2, the drive mechanism 3 removes the outer shell 6 from the first contouring slot 421 of the first positioning seat 42, and controls the defect at the parting line of the outer shell 6 to abut against the grinding belt 13 of the grinding area 130 to repair the defect of the outer shell 6. S3, the drive mechanism 3 places the housing 6 on the output mechanism 5, and the drive mechanism 3 releases the housing 6; S4, repeat S1-S3.

[0051] It should be noted that in S2, as the drive mechanism 3 controls the housing 6 to move from the first contour slot 421 toward the polishing area 130, the bidirectional air pump extracts the gas from the airbag 72, and the top opening of the collection box 71 opens. In S3, as the drive mechanism 3 controls the housing 6 to move from the polishing area 130 toward the output mechanism 5, the bidirectional air pump inflates the airbag 72 until the top opening of the collection box 71 is completely closed.

[0052] The embodiments of the invention have been described above with reference to the accompanying drawings. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments without departing from the spirit of the embodiments and the scope of protection of the claims, and all of these forms are within the protection scope of the embodiments.

Claims

1. A parting line repair device for injection molded parts, characterized in that, include: The polishing mechanism (1) includes a mounting frame (11), on which a plurality of guide wheels (12) are rotatably mounted, and a polishing belt (13) is sleeved on the plurality of guide wheels (12), and the polishing belt (13) is provided with a polishing area (130). Water storage tank (2), the polishing mechanism (1) is installed in the water storage tank (2), and the water in the water storage tank (2) submerges the polishing area (130). The drive mechanism (3) includes a robotic arm (31) connected to a clamping assembly (32), and the drive mechanism (3) is used to drive the housing (6) to polish in the polishing area (130).

2. The parting line repair device for injection molded parts according to claim 1, characterized in that, The clamping assembly (32) includes a fixed jaw (321), a movable jaw (322), and a telescopic drive (323). The fixed jaw (321) is fixedly connected to the end of the robotic arm (31). One end of the telescopic drive (323) is fixedly connected to the fixed jaw (321), and the other end is fixedly connected to the movable jaw (322).

3. The parting line repair device for injection molded parts according to claim 1, characterized in that, The injection molding parting line repair device also includes a conveying mechanism (4), which includes a first conveyor (41). A plurality of first positioning seats (42) are fixedly installed on the conveyor belt of the first conveyor (41). The first positioning seat (42) is provided with a first contouring slot (421) for accommodating the outer shell (6). The first contouring slot (421) is provided with a receiving slot (422) corresponding to the parting line of the outer shell (6).

4. The parting line repair device for injection molded parts according to claim 3, characterized in that, The injection molding parting line repair device also includes an output mechanism (5), which includes a second conveyor (51). Multiple second positioning seats (52) are fixedly installed on the conveyor belt of the second conveyor (51). The second positioning seat (52) is provided with a second contour slot (521) for accommodating the outer shell (6).

5. The parting line repair device for injection molded parts according to claim 1, characterized in that, A fixing plate (14) is fixedly installed on the mounting bracket (11). A pad (15) that fits against the grinding belt (13) is connected to the side of the fixing plate (14) near the grinding belt (13). The pad (15) corresponds to the grinding area (130). The distance between the pad (15) and the fixing plate (14) is adjusted by the adjusting member (16).

6. The parting line repair device for injection molded parts according to claim 5, characterized in that, The adjusting component (16) includes a screw (161) and a locking sleeve (162). The screw (161) is threadedly connected to the fixing plate (14) and rotatably connected to the pad (15). The locking sleeve (162) is threadedly connected to the screw (161) and abuts against the fixing plate (14).

7. The parting line repair device for injection molded parts according to claim 1, characterized in that, The grinding belt (13) includes several sanding belts with different mesh sizes that are fitted onto the guide wheel (12), and the several sanding belts are arranged sequentially along the axial direction of the guide wheel (12).

8. The parting line repair device for injection molded parts according to claim 1, characterized in that, A high-pressure fluid spray gun (21) is fixedly installed on the inner wall of the water storage tank (2). The high-pressure fluid spray gun (21) is located above the liquid surface of the water storage tank (2), and the spray nozzle of the high-pressure fluid spray gun (21) faces the grinding surface of the grinding belt (13).

9. The parting line repair device for injection molded parts according to claim 1, characterized in that, The bottom of the water storage tank (2) is connected to one end of an inlet pipe (22) and an outlet pipe (23), and the other ends of the inlet pipe (22) and the outlet pipe (23) are connected to a filter (24).

10. A method of using an injection molded parting line repair device, comprising using the injection molded parting line repair device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The drive mechanism (3) moves above the conveying assembly and clamps the housing (6). S2. The drive mechanism (3) removes the outer shell (6) from the first contouring slot (421) of the first positioning seat (42) and controls the defect at the parting line of the outer shell (6) to abut against the grinding belt (13) of the grinding area (130) to repair the defect of the outer shell (6). S3, the drive mechanism (3) places the housing (6) on the output mechanism (5), and the drive mechanism (3) releases the housing (6). S4, repeat S1-S3.

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