Levelness testing fixture for automobile injection-molded parts
By setting up a suspension and reset mechanism on the chain conveyor and using winches and strands to connect the components, the problem that the correction roller cannot clamp non-linear components is solved, and stable fixing and accurate detection of the components are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU TIANHONG AUTO PARTS CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, the correction roller cannot effectively clamp injection molded parts that are not straight or have regular curved surfaces, resulting in the loss of positioning reference and a decrease in detection accuracy.
By employing a suspension mechanism and a reset mechanism, sockets and winches are installed on the chain conveyor, and stranded wires are used to connect the components around the perimeter, achieving flexible fixing and tilt adjustment of the components. The reset mechanism enables the sockets to be reused.
It enables stable fixing and precise positioning of parts of different shapes, improving the accuracy of flatness detection and the efficiency of reuse.
Smart Images
Figure CN224577306U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flatness inspection technology for injection molded parts, and in particular to a flatness inspection tool for automotive injection molded parts. Background Technology
[0002] Flatness deviations can cause parts to fail to fit tightly with adjacent components such as body panels, dashboards, and lights, resulting in gaps, warping, or clip failure. Ultimately, this affects the overall vehicle assembly accuracy and NVH (noise, vibration, and harshness) performance. Therefore, a flatness detection device for injection molded parts, with publication number CN222249062U, is proposed. In use, the injection molded part is transported onto a conveyor belt and then conveyed to a protective frame. The protective frame contains a detection component to check the flatness of the injection molded part. While the injection molded part is being conveyed on the conveyor belt, a correction component operates to clamp and correct the injection molded part's position on the conveyor belt. The position adjustment mechanism on the conveyor belt helps prevent misalignment during injection molding. The adjustment assembly includes a first cylinder fixedly mounted on opposite sides of two support plates. The piston shafts of the two first cylinders slide through the support plates, and mounting frames are fixedly mounted at the ends of the piston shafts of the two first cylinders. Adjustment rollers arranged in a linear array are rotatably mounted in the two mounting frames. When the conveyor belt transports the injection molding, the first cylinders drive the mounting frames and adjustment rollers to move. Through the cooperation of the two sets of adjustment rollers, the injection molding is clamped and positioned, thereby correcting the position of the injection molding during transport.
[0003] However, the calibration roller is a cylindrical rigid roller that can only make line contact with straight lines or regular curved surfaces. When the side of the part is wavy, inclined, grooved or bent, the calibration roller only makes partial contact and cannot clamp the whole part, resulting in the loss of positioning reference, the part rotating or shifting on the conveyor belt, and affecting the accuracy of subsequent inspection. Utility Model Content
[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a flatness inspection tool for automotive injection molded parts.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a flatness inspection fixture for automotive injection molded parts, comprising a chain conveyor and a protective frame for inspecting the flatness of the parts, wherein the chain conveyor is equipped with: The suspension mechanism includes several sockets. A base is fixedly installed on the bottom edge of the outer side of each socket. Both ends of the lower surface of the base are rotatably connected to screw rods for insertion into the end of the chain plate on the surface of the chain conveyor. The upper surface of the socket extends upward near the four sides and is fitted with a housing. A vertically arranged hydraulic rod is fixedly installed at the center of the upper surface of the socket. The telescopic end of the hydraulic rod is fixedly connected to the inner top surface of the housing. A winch for connecting the surface of the component is fixedly installed at the top edge of the outer wall of one side of the housing. The suspension mechanism is used to adjust and fix the position of the component.
[0006] Preferably, one lead screw on the same base surface is inserted into the chain plate on the surface of the chain conveyor, and the other lead screw is threadedly connected to the chain plate on the surface of the chain conveyor.
[0007] Preferably, the socket is further provided with; Reset Mechanism: The reset mechanism includes a connecting plate and two rack rails. The two rack rails are distributed in parallel and fixedly installed on both sides of the chain conveyor frame. The connecting plate is movably installed on the socket and used to insert into the surface of the rack rails. A spur gear is rotatably installed on the inner wall of the connecting plate for meshing with the tooth surface of the rack rails. The reset mechanism is used to move the socket from the end of the chain conveyor to the beginning.
[0008] Preferably, a connecting seat is fixedly installed on one side of the socket, the connecting seat extends upward and is fixedly installed with a downward telescopic electric push rod, and a connecting piece that is rotatably connected to the connecting plate is movably installed at the telescopic end of the electric push rod.
[0009] Preferably, a first motor is fixedly installed on the top edge of the connecting plate, and a second motor is fixedly installed on the telescopic end of the electric push rod.
[0010] Preferably, the first motor spindle is connected to the bottom edge of the connecting plate away from the electric push rod, and the second motor spindle is fixedly connected to the upper surface of the connecting plate near the electric push rod.
[0011] Preferably, a hinge plate is hinged to the bottom edge of the side of the connecting plate, and an electric telescopic rod is hinged between one side of the hinge plate and the side of the connecting plate, while an abutment plate for clamping the bottom edge of the rack rail is fixedly installed on the other side of the hinge plate.
[0012] Preferably, the cylinder body and telescopic end of the electric telescopic rod are respectively hinged to the side of the connecting plate and the hinge plate away from the electric push rod.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, a chain conveyor is set up to transport parts, and several sockets distributed around the parts are installed on the chain plate of the chain conveyor. The winches are fixed by the socket housings. The winches are set around the parts. The parts are connected by the winch wires distributed around the parts. The tilt of the parts can be adjusted by releasing parts of different lengths through the winches in different directions. The flexibility of the wires makes it easy to connect the surfaces of parts with different shapes.
[0014] 2. In this utility model, the connecting plate is moved to insert into the surface of the rack and pinion rail, and then the base is disengaged from the chain conveyor. The base can move along the surface of the rack and pinion rail by moving the connecting plate. That is, the reset mechanism is used to move the socket from the end of the chain conveyor to the beginning, which is convenient for repeated use. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of a flatness inspection tool for automotive injection molded parts is provided for this utility model. Figure 2 A schematic diagram of the structure of the flatness inspection fixture housing for automotive injection molded parts is provided for this utility model. Figure 3 This utility model proposes a flatness inspection tool for automotive injection molded parts. Figure 2 A schematic diagram of the structure viewed from below; Figure 4 for Figure 3 A schematic diagram of the side view structure; Figure 5 for Figure 2 A cross-sectional structural diagram.
[0016] Legend: 1. Chain conveyor; 2. Protective frame; 3. Rack and pinion rail; 4. Housing; 5. Socket; 6. Base; 7. Lead screw; 8. Connecting plate; 9. First motor; 10. Connecting plate; 11. Electric push rod; 12. Winch; 13. Second motor; 14. Electric telescopic rod; 15. Hinge plate; 16. Contact plate; 17. Spur gear; 18. Hydraulic rod; 19. Connecting seat. Detailed Implementation
[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0019] like Figures 1-5 As shown, the flatness inspection fixture for automotive injection molded parts includes a chain conveyor 1 and a protective frame 2 for flatness inspection of parts. The specific structure and components used to achieve flatness inspection of parts entering the protective frame 2 have been disclosed in the prior art, so they are not shown or explained in the attached drawings. The chain conveyor 1 is equipped with a suspension mechanism. The suspension mechanism includes several sockets 5, with a base 6 fixedly mounted on the bottom edge of each socket 5. Both ends of the lower surface of the base 6 are rotatably connected to lead screws 7 for insertion into the ends of the chain plates on the surface of the chain conveyor 1. One lead screw 7 on the same base 6 surface is inserted into the chain plate on the surface of the chain conveyor 1, while the other lead screw 7 is threadedly connected to the chain plate on the surface of the chain conveyor 1. In actual use, a stepper motor is used to drive the other lead screw 7 to rotate on the base 6. This allows the other lead screw 7 to rotate while the socket 5 is suspended, thus achieving the threaded connection of the lead screw 7 to the chain plate. On the chain plate of conveyor 1, simultaneously, the lead screws 7 at other positions are inserted into the chain plate of conveyor 1, thus fixing the base 6 and the socket 5 onto the surface of the chain plate of conveyor 1. The upper surface of the socket 5 extends upwards near the surrounding sides and is fitted with a housing 4. A vertically arranged hydraulic rod 18 is fixedly installed at the center of the upper surface of the socket 5. The telescopic end of the hydraulic rod 18 is fixedly connected to the inner top surface of the housing 4. A winch 12 for connecting the surface of components is fixedly installed at the top edge of one side of the outer wall of the housing 4. The winch 12 is a commonly used electric winch. The winch wire passes through the opening on the surface of the component or is tied to the surface of the component. Figure 1 As shown, by setting winches 12 around the parts, the winches 12 can be used to wind up and release the strand to tilt the parts. In addition, in this solution, the hydraulic rod 18 can be extended and retracted to drive the housing 4 to lift and lower the winches 12 to further adjust the tilt of the parts. Therefore, by using the strands of the four winches 12 to connect the parts, parts of different shapes can be fixed. Therefore, the suspension mechanism is used to adjust and fix the position of the parts.
[0020] The socket 5 is also equipped with a reset mechanism: the reset mechanism includes a connecting plate 10 and two rack rails 3. The two rack rails 3 are distributed in parallel and fixedly installed on both sides of the frame of the chain conveyor 1. The connecting plate 10 is movably installed on the socket 5 and is used to insert into the surface of the rack rails 3. A spur gear 17 is rotatably installed on the inner wall of the connecting plate 10 for meshing with the tooth surface of the rack rails 3. By installing a stepper motor on the connecting plate 10 to drive the spur gear 17 to rotate, the spur gear 17 can roll along the meshing surface of the rack rails 3. After the parts pass through the protective frame 2 for inspection, the winch 12 releases the parts, and the connecting plate 10 moves to insert into the surface of the rack rails 3. Then the base 6 is disengaged from the chain conveyor 1. The base 6 can move along the surface of the rack rails 3 by the connecting plate 10. That is, the reset mechanism is used to move the socket 5 from the end to the beginning of the chain conveyor 1 for easy reuse.
[0021] A connector 19 is fixedly installed on one side of the socket 5. The connector 19 extends upward and is fixedly installed with a downward telescopic electric push rod 11. A connecting piece 8 that is rotatably connected to the connecting plate 10 is movably installed at the telescopic end of the electric push rod 11. A first motor 9 is fixedly installed on the top edge of the connecting plate 10. A second motor 13 is fixedly installed at the telescopic end of the electric push rod 11. The main shaft of the first motor 9 is connected to the bottom edge of the connecting piece 8 away from the electric push rod 11. The main shaft of the second motor 13 is fixedly connected to the upper surface of the connecting piece 8 near the electric push rod 11. The specific operating steps are as follows: I. Combination Figure 2 And refer to Figure 1 When the connecting plate 10 is inserted into the surface of the rack and pinion rail 3, the extension of the electric push rod 11 and the stepper motor on the base 6 drive the rotation of another threaded screw 7, so that the screw 7 can be disengaged from the chain conveyor 1. With the continuous extension of the electric push rod 11, the base 6 rises. Then, by rotating the main shaft of the first motor 9, the connecting plate 8 drives the second motor 13, the electric push rod 11, the connecting seat 19 and the socket 5 to rotate horizontally until they are disengaged from the chain conveyor 1. The spur gear 17 can then rotate and roll on the surface of the rack and pinion rail 3, causing the rotated socket 5 to move in a misaligned state with the protective frame 2. 2. When the chain conveyor 1 needs to move the parts, the base 6 and the chain conveyor 1 are positioned relative to each other by using the screw 7 to connect the screw 7 to the chain conveyor 1. Then, the electric push rod 11 is retracted to raise the second motor 13, the connecting piece 8, the first motor 9, and the connecting plate 10 above the chain conveyor 1. Then, the second motor 13 drives the connecting piece 8 to rotate, so that the connecting piece 8 drives the first motor 9 and the connecting plate 10 to rotate above the chain plate of the chain conveyor 1, so that the connecting plate 10 can pass through the protective frame 2 with the movement of the chain conveyor 1.
[0022] A hinge plate 15 is hinged to the bottom edge of the side of the connecting plate 10. An electric telescopic rod 14 is hinged between one side of the hinge plate 15 and the side of the connecting plate 10, and an abutment plate 16 for clamping the bottom edge of the rack rail 3 is fixedly installed on the other side of the hinge plate 15. The cylinder body and telescopic end of the electric telescopic rod 14 are respectively hinged to the side of the connecting plate 10 and the hinge plate 15 away from the electric push rod 11. When the connecting plate 10 needs to cooperate with the rack rail 3, the electric telescopic rod 14 extends to push the hinge plate 15 to swing. The hinge plate 15 uses a lever motion to make the abutment plate 16 swing up to a horizontal state to fit against the bottom edge of the rack rail 3. When the connecting plate 10 needs to disengage from the rack rail 3, the electric telescopic rod 14 retracts to make the hinge plate 15 drive the abutment plate 16 to swing down to a vertical state, so that it can disengage from below the rack rail 3, making it convenient for the connecting plate 10 to rise and disengage from the rack rail 3.
[0023] Working principle: During testing, the socket 5 is placed at the starting point of the chain conveyor 1, and the stepper motor drives another lead screw 7 to rotate, so that the lead screw 7 is threaded onto the chain plate of the chain conveyor 1. The stranded wire on the winch 12 is used to connect the parts around the perimeter, and the parts are tilted by winding and releasing the stranded wire to fix the parts. Then, the electric telescopic rod 14 retracts, so that the hinge plate 15 drives the contact plate 16 to swing down to a vertical position, thus disengaging it from below the rack rail 3. With the base 6 in a relative position to the chain conveyor 1, the electric push rod 11 retracts, so that the second motor 13, connecting plate 8, first motor 9, and connecting plate 10 rise above the chain conveyor 1. Then, the second motor 13 drives the connecting plate 8 to rotate, so that the connecting plate 8 drives the first motor 9 and the connecting plate 10 to rotate above the chain plate of the chain conveyor 1, so that the connecting plate 10 can pass through the protective frame 2 with the movement of the chain conveyor 1 to achieve flatness detection.
[0024] The wiring diagrams of the chain conveyor 1, first motor 9, second motor 13, electric push rod 11, electric telescopic rod 14, hydraulic rod 18, and stepper motor in this utility model are common knowledge in the field. Their working principles are well-known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts of the chain conveyor 1, first motor 9, second motor 13, electric push rod 11, electric telescopic rod 14, hydraulic rod 18, and stepper motor will not be explained in detail.
[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A flatness testing device for automobile injection molded parts, comprising a chain plate conveyor (1) and a protective frame (2) for flatness testing of the parts, characterized in that: The chain conveyor (1) is equipped with: The suspension mechanism includes several sockets (5), and a base (6) is fixedly installed on the bottom edge of the outer side of the socket (5). Both ends of the lower surface of the base (6) are rotatably connected to screws (7) for insertion into the end of the chain plate on the surface of the chain conveyor (1). The upper surface of the socket (5) extends upward near the four sides and is fitted with a shell (4). A vertically arranged hydraulic rod (18) is fixedly installed at the center of the upper surface of the socket (5). The telescopic end of the hydraulic rod (18) is fixedly connected to the inner top surface of the shell (4). A winch (12) for connecting the surface of the component is fixedly installed at the top edge of the outer wall on one side of the shell (4). The suspension mechanism is used to adjust and fix the position of the component.
2. The flatness testing fixture for automotive injection molded parts of claim 1, wherein: One of the lead screws (7) on the same base (6) surface is inserted into the chain plate on the surface of the chain conveyor (1), and the other lead screw (7) is threadedly connected to the chain plate on the surface of the chain conveyor (1).
3. The flatness gauge for automotive injection molded parts of claim 1, wherein: The socket (5) is also provided with; Reset mechanism: The reset mechanism includes a connecting plate (10) and two rack rails (3). The two rack rails (3) are distributed in parallel and fixedly installed on both sides of the frame of the chain conveyor (1). The connecting plate (10) is movably installed on the socket (5) and used to insert into the surface of the rack rail (3). The inner wall of the connecting plate (10) is rotatably installed with a spur gear (17) for meshing with the tooth surface of the rack rail (3). The reset mechanism is used to move the socket (5) from the end of the chain conveyor (1) to the beginning.
4. The flatness testing fixture for automotive injection molded parts of claim 3, wherein: A connector (19) is fixedly installed on one side of the socket (5). The connector (19) extends upward and is fixedly installed with a downward telescopic electric push rod (11). The telescopic end of the electric push rod (11) is movably installed with a connecting piece (8) that is rotatably connected to the connecting plate (10).
5. The flatness gauge for automotive injection molded parts of claim 4, wherein: The first motor (9) is fixedly installed on the top edge of the connecting plate (10), and the second motor (13) is fixedly installed on the telescopic end of the electric push rod (11).
6. The flatness gauge for automotive injection molded parts of claim 5, wherein: The main shaft of the first motor (9) is connected to the bottom edge of the connecting piece (8) away from the electric push rod (11), and the main shaft of the second motor (13) is fixedly connected to the upper surface of the connecting piece (8) near the electric push rod (11).
7. The flatness gauge for automotive injection molded parts of claim 3, wherein: A hinge plate (15) is hinged to the bottom edge of the side of the connecting plate (10). An electric telescopic rod (14) is hinged between one side of the hinge plate (15) and the side of the connecting plate (10), and an abutment plate (16) for clamping the bottom edge of the rack rail (3) is fixedly installed on the other side of the hinge plate (15).
8. The flatness gauge for automotive injection molded parts of claim 7, wherein: The cylinder body and telescopic end of the electric telescopic rod (14) are respectively hinged to the side of the connecting plate (10) and the hinge plate (15) away from the electric push rod (11).