Door panel placement mechanism

Abstract

The application provides a door plate placing mechanism, which can lift and position a mold device upward and fix it at a predetermined position in a work station, so as to facilitate the assembly work of the current work station. Since the mold device and the automobile door plate workpiece can be fixed at the predetermined position, the preset assembly tool and its working path in the work station can be used, so as to facilitate the automation of the assembly work. The rotating driving part can drive the cover plate of the mold device to rotate and open, so that the automobile door plate workpiece is exposed for assembly, and the mold device can be closed after the assembly is completed, so as to facilitate the conveying of the automobile door plate workpiece between different work stations. In summary, the door plate placing mechanism can fix the mold device at a predetermined position in a work station and drive the mold device to open or close, so as to facilitate the automatic or semi-automatic assembly of the automobile door plate workpiece, save a large amount of manpower, improve the production efficiency of the automobile door plate product and the consistency of the final product.

Description

Technical Field

[0001] This invention belongs to the field of automotive interior parts manufacturing technology, specifically relating to a door panel placement mechanism. Background Technology

[0002] Automotive interior parts are products used inside automobiles, including center consoles, door panels, seat cushions, and many other products. Door panel assembly involves multiple processes such as screwing, welding, installing clips, and quality inspection. Currently, the assembly of automotive door panels is mostly done manually, involving moving the parts to be assembled onto a workbench, securing them, and then performing each process sequentially. This creates several problems: First, the large size and weight of automotive door panels result in high labor intensity and low production efficiency for operators; second, door panels are prone to bumps and knocks during handling, affecting product quality; third, operators need to switch between multiple processing tools and perform multiple different processes, resulting in significant time spent on switching, impacting production efficiency, and the varying skill levels of different operators also affect the consistency of the final product.

[0003] Therefore, in order to improve the production efficiency of automobile door panel assembly, reduce the labor burden of workers, and improve the quality and consistency of the final product, there is a need for a door panel assembly line that can automatically or semi-automatically assemble automobile door panels at different workstations. Accordingly, there is a need for a mold device that can carry the automobile door panel workpieces to be processed so that they can move between various workstations, and a placement mechanism that can fix the mold device at a predetermined position at each workstation to facilitate assembly processing. Summary of the Invention

[0004] This invention addresses the aforementioned problems and aims to provide a door panel placement mechanism that can fix a door panel assembly mold device at predetermined positions in various workstations to facilitate assembly processing, and can also cooperate with the mold device to fix the automotive door panel workpiece to be processed. The invention employs the following technical solution:

[0005] This invention provides a door panel placement mechanism, installed in a workstation of a door panel assembly line, for fixing a door panel assembly mold device at a predetermined position in the workstation. The door panel assembly mold device has a support unit for supporting the automotive door panel workpiece and a cover plate rotatably connected to the support unit. Multiple positioning blocks with downward-facing grooves are provided below the support unit. A pair of height limiting blocks with multiple first pin holes are provided on the side of the support unit. A connector with a U-shaped opening is provided on the side of the cover plate connected to the support unit. The mechanism is characterized by including: a lifting positioning part for lifting the support unit upwards and fixing it in a predetermined position; and a rotation driving part, inserted into the cover plate, for driving the cover plate to rotate, thereby opening or closing the door panel assembly mold device.

[0006] The door panel placement mechanism provided by the present invention may also have the following technical features, wherein the lifting and positioning part includes: a plurality of lifting cylinders arranged corresponding to a plurality of positioning blocks, the output end of which matches the groove, for lifting the support unit and fixing it in the horizontal direction; and at least one pair of lifting limiting members for abutting against a pair of height limiting blocks when lifting, thereby limiting the lifting height of the support unit.

[0007] The door panel placement mechanism provided by the present invention may also have the following technical features: the lifting limiting member has a plurality of second pin holes, which are arranged in a manner corresponding to a plurality of first pin holes. When the height limiting block abuts against the lifting limiting member, the plurality of first pin holes and the plurality of second pin holes are aligned to form a through hole for inserting a pin, thereby fixing the support unit in the vertical direction.

[0008] The door panel placement mechanism provided by the present invention may also have the following technical features, wherein the rotation drive unit includes: a rotation drive motor for driving the cover plate to rotate and open / close; and a transmission assembly for connecting the output end of the rotation drive motor and the cover plate, wherein when the lifting and positioning part lifts the support unit, the cover plate is inserted into the transmission assembly.

[0009] The door panel placement mechanism provided by the present invention may also have the following technical features, wherein the transmission component includes: a bearing; an opening and closing rod, one end of which has a mounting hole, and is mounted on the output end of the rotary drive motor through the mounting hole and the bearing; and a circular pusher, which is rotatably mounted on the other end of the opening and closing rod, and when the lifting and positioning part lifts the support unit, the circular pusher is embedded in the U-shaped opening.

[0010] The door panel placement mechanism provided by the present invention may also have the following technical feature: the rotation drive unit further includes a rotation limiting component for limiting the maximum stroke of the opening and closing rod.

[0011] The door panel placement mechanism provided by the present invention may also have the following technical features, wherein the rotation limiting component includes: a plurality of perforated plates, respectively disposed above and below the output end of the rotary drive motor, wherein the perforated plates are provided with perforations; and a plurality of proximity sensors, respectively installed in the plurality of perforations, wherein once the opening / closing rod reaches the position of the proximity sensor, the proximity sensor senses the opening / closing rod and generates a corresponding signal.

[0012] The door panel placement mechanism provided by the present invention may also have the following technical features: a mold pushing part, used to move the door panel assembly mold device to a predetermined position in the workstation, so that the lifting and positioning part can lift it, and to move the door panel assembly mold device to the next workstation.

[0013] The door panel placement mechanism provided by the present invention may also have the following technical features, wherein the mold pushing part includes: two chain conveying tracks arranged parallel to each other, the spacing of which corresponds to the overall width of the door panel assembly mold device, having a drive gear and a chain mounted on the drive gear; a transmission rod, with its two ends respectively connected to the drive gears of the two chain conveying tracks, for making the conveying speed of the two chain conveying tracks consistent; and a push drive motor for driving the chain to rotate.

[0014] Invention Function and Effect

[0015] According to the door panel placement mechanism of the present invention, the lifting and positioning part can lift the mold device upward and fix it at a predetermined position in the workstation, thereby facilitating the assembly work at the current workstation. Since the mold device and the automotive door panel workpiece it carries can be fixed at the predetermined position, pre-set assembly tools and their working paths in the workstation can be implemented, thus facilitating the automation of the assembly work at the workstation. Because it has a rotation drive part, the cover plate of the mold device can be driven to rotate, thereby opening the mold device to expose the automotive door panel workpiece for assembly processing. After the assembly at the current workstation is completed, the mold device can be closed, thus facilitating the transfer of automotive workpieces between different workstations. In summary, the door panel placement mechanism of the present invention can fix the mold device at a predetermined position in the workstation and drive the mold device to open or close, thereby facilitating automatic or semi-automatic assembly of automotive door panel workpieces, saving a significant amount of manpower, improving the production efficiency of automotive door panel products, and enhancing the consistency of the final product. Attached Figure Description

[0016] Figure 1 This is a partial structural diagram of the door panel placement station in an embodiment of the present invention;

[0017] Figure 2 This is a structural diagram of the door panel assembly mold device in the closed state in an embodiment of the present invention;

[0018] Figure 3 These are structural diagrams of the door panel assembly mold device at different angles in the closed state in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the positioning block and the lifting positioning part in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the connector and the rotation drive unit in an embodiment of the present invention;

[0021] Figure 6 This is a structural diagram of the door panel assembly mold device in the open state in an embodiment of the present invention;

[0022] Figure 7 This is a structural diagram of the mold pushing part in an embodiment of the present invention;

[0023] Figure 8 yes Figure 2 Enlarged view of the inner part of frame A.

[0024] Figure label:

[0025] Door panel placement device 10; Door panel placement mechanism 11; Mold pushing part 12; Chain conveyor track 121; Drive shaft 122; Push drive motor 123; Outer baffle 124; Lifting and positioning part 13; Lifting cylinder 131; Lifting limit part 132; Vertical section 1321; Second pin hole 1321a; Extension section 1322; Buffer pad 1323; Rotary drive part 14; Rotary drive motor 141; Transmission assembly 142; Bearing 1421; Opening and closing rod 1422; Circular pusher 1423; Rotary... Moving limit assembly 143; perforated plate 1431; proximity sensor 1432; door panel assembly mold device 20; support unit 21; support frame 211; positioning block 2111; handle 2112; height limit block 2113; first pin hole 2113a; mold fixing component 212; cover plate 22; cover plate frame 221; pressing limit component 222; pressure head 223; plug-in component 224; connecting unit 23; connecting bracket 231; rotating shaft 232; bearing assembly 233; damping assembly 234. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the door panel placement mechanism of the present invention will be specifically described below in conjunction with embodiments and accompanying drawings.

[0027] <Example>

[0028] Figure 1 This is a partial structural diagram of the door panel placement station in an embodiment of the present invention.

[0029] like Figure 1 As shown, the door panel placement mechanism 11 of this embodiment is installed in the door panel placement device 10 (i.e., door panel placement station) in the door panel assembly line. It is used to fix the mold device 20 (hereinafter referred to as mold device 20) at a predetermined position in the station when the door panel assembly mold device 20 (hereinafter referred to as mold device 20) reaches the station to facilitate assembly processing, and to assist the mold device 20 in fixing the automobile door panel workpiece to be assembled.

[0030] Since the door panel placement mechanism 11 is used to drive and move the mold device 20, the structure and function of the mold device 20 will be explained below in order to clearly explain the function of the door panel placement mechanism 11.

[0031] Figure 2 This is a structural diagram of the door panel assembly mold device in the closed state in this embodiment.

[0032] Figure 3 This is a structural diagram of the door panel assembly mold device at different angles in the closed state in this embodiment.

[0033] like Figure 2 and Figure 3 As shown, the mold device 20 includes a support unit 21, a cover plate 22, and a connecting unit 23.

[0034] The support unit 21 is used to support the door panel workpiece to be assembled, including a support frame 211, a support mold (not shown in the figure), and multiple mold fixing parts 212.

[0035] The support frame 211 is made of square steel rods and steel sheets welded together and reinforced by L-shaped metal parts and screws and other connecting parts. The support frame 211 is used to support the mold.

[0036] Figure 4 This is a structural schematic diagram of the positioning block and the lifting positioning part in this embodiment. Due to structural obstruction, Figure 4 Only a portion of the positioning blocks are shown in the image.

[0037] like Figure 2-4 As shown, four positioning blocks 2111 are provided below the support frame 211. The positioning blocks 2111 have a downward-facing circular groove in the middle, which is used to cooperate with the door panel placement mechanism 11 when it is lifted and positioned.

[0038] A pair of height limiting blocks 2113 are provided on both sides of the support frame 211 (based on the opening and closing direction of the cover plate 22). The height limiting blocks 2113 are metal blocks with three first pin holes 2113a. When the mold device 20 is placed on the work station, the first pin holes 2113a face the chain conveyor tracks on both sides.

[0039] In addition, two handles 2112 are provided on the other two sides of the support frame 211 (i.e., on both sides along the conveying direction) to allow the operator to lift the mold device 20 off the workstation in case of malfunction or when the mold device 20 needs to be replaced.

[0040] The support mold is made of a material with relatively low hardness and a certain degree of elasticity, such as plastic. Its shape matches the automotive door panel workpiece to be assembled, and it is used to support and limit the automotive door panel workpiece. When the automotive door panel workpiece is placed on multiple support molds, different areas of the lower surface of the automotive door panel workpiece are respectively attached to the upper surface of multiple support molds.

[0041] The mold fixture fastener 212 is an L-shaped metal part. Multiple mold fixture fasteners 212 are respectively installed above the square rods of the support frame 211 and facing different directions. Among them, a number of mold fixture fasteners 212 form a structure for installing the supporting mold fixture. The supporting mold fixture is engaged between the multiple mold fixture fasteners 212 and fixed by screws or other connecting parts.

[0042] The cover plate 22 is rotatably connected to the support unit 21 and is used to press the door panel workpiece onto the support unit 21, thereby fixing the door panel workpiece. The cover plate 22 includes a cover plate frame 221, a pair of pressing limit members 222, a plurality of pressing heads 223, and a plug-in member 224.

[0043] The cover frame 221 is welded from aluminum profiles and reinforced by L-shaped metal parts and screws. Multiple aluminum profiles of varying lengths, with some angled, form the cover frame 221, which has multiple square, triangular, and irregularly shaped holes of different sizes. The structure of the cover frame 221 is designed to accommodate multiple pressure heads 223, allowing them to be arranged according to a predetermined pattern.

[0044] A pair of pressing limiters 222 are both L-shaped metal parts, which are installed on both sides of the cover frame 221 (both sides along the conveying direction). When the cover 22 rotates into position toward the support unit 21, the extended ends of the pressing limiters 222 abut against the square rods on both sides of the cover frame 221, thereby achieving the limiting function and avoiding damage to the automotive door panel workpiece inside.

[0045] The pressure head 223 consists of a metal rod and an elastic element wrapped around the end of the metal rod. The other end of the metal rod is welded to the cover frame 221. The metal rod is perpendicular to the surface direction of the cover frame 221 and extends towards the support unit 21. The arrangement of the multiple pressure heads 223 and the extension length of each pressure head 223 are matched with the upper surface of the automotive door panel workpiece to be pressed. The multiple pressure heads 223 are used to abut against different parts of the upper surface of the automotive door panel workpiece when the cover 22 is rotated and closed, thereby fixing the automotive door panel workpiece and preventing collisions during transportation.

[0046] Figure 5 This is a schematic diagram of the connector and the rotation drive unit in this embodiment.

[0047] like Figure 5 As shown, the connector 224 is a metal part, which is fixedly installed on the side of the cover frame 221 connected to the support unit 21 by screws and other connectors. It has an outward U-shaped opening, and the connector 224 and the cover frame 221 form an obtuse angle. When the cover 22 is closed, that is, when the surface direction of the cover frame 221 is roughly in line with the horizontal direction, the U-shaped opening of the connector 224 tilts upward.

[0048] The connecting unit 23 is used to connect the support unit 21 and the cover plate 22. The connecting unit 23 includes a connecting bracket 231, a rotating shaft 232, two pairs of bearing assemblies 233 and a damping assembly 234.

[0049] The connecting bracket 231 is a metal bracket installed on one side of the support frame 211. The rotating shaft 232 is installed on the connecting bracket 231, and the extension direction of the rotating shaft 232 is consistent with the extension direction of the square rod on the side of the support frame 211. The cover frame 221 is installed on the rotating shaft 232 via two pairs of bearing assemblies 233 and can rotate along the rotating shaft 232. The middle part of one side of the cover frame 221 is connected to the connecting bracket 231 via a damping assembly 234. The damping assembly 234 can provide a certain resistance when the cover 22 rotates, thereby limiting its rotation speed and preventing the cover frame 221 from rotating and pressing down too quickly when closed, which could damage the automotive door panel workpiece.

[0050] Figure 6 This is a structural diagram of the door panel assembly mold device in the open state according to an embodiment of the present invention. It should be noted that... Figure 2-4 and Figure 5-6 The figures shown are two mold devices 20 suitable for two different sizes of automotive door panel workpieces. The structures of their cover plates 22 are different, but... Figure 2-6 The door panel placement mechanism 11 shown in the figure has the same structure.

[0051] like Figure 2-6As shown, when the cover plate 22 is flipped and closed toward the support unit 21, the car door panel workpiece is fixed between the two. When the cover plate 22 is flipped open in the opposite direction, the car door panel workpiece can be placed, taken out, replaced, or inspected or assembled.

[0052] The structure and function of the door panel placement mechanism 30 will be explained in detail below in conjunction with the relevant structure of the door panel assembly mold device 20.

[0053] The door panel placement mechanism 11 includes a mold pushing part 12, a lifting and positioning part 13, and a rotation driving part 14.

[0054] Figure 7 This is a structural diagram of the mold pushing part in this embodiment.

[0055] like Figure 7 As shown, the mold pushing unit 12 includes two chain conveyor tracks 121, a drive shaft 122, and a pushing drive motor 123.

[0056] Two parallel chain conveyor tracks 121 are arranged with a spacing matching the width of the mold device 20. When the mold device 20 is placed on the chain conveyor tracks 121, both sides of the mold device 20 are respectively mounted on the two chain conveyor tracks 121 along its width direction, thereby enabling the mold device 20 to move within the current workstation. The chain conveyor tracks include drive gears and annular chains mounted on the drive gears, etc., the specific structure of which is prior art and will not be described in detail.

[0057] In addition, outer baffles 124 are provided on the outer sides of the two chain conveyor tracks 121. The upper edge of the outer baffles 124 is higher than the upper end face of the chain conveyor track 121, thereby forming a clamping structure for the mold device 20 on the chain conveyor track 121 to prevent it from tilting or even falling during the conveying process, and also to protect the chain.

[0058] The two ends of the drive shaft 122 are respectively connected to the two drive gears of the two chain conveyor tracks 311 through bearing assemblies, so as to keep the conveying speed of the two chain conveyor tracks 121 consistent, thereby enabling the mold device 20 to be conveyed smoothly.

[0059] The push drive motor 123 is used to drive the chain of the chain conveyor track 121 to rotate, thereby pushing the mold device 20.

[0060] The mold pushing unit 12 can move the mold device 20 to a predetermined position in the workstation, so that the lifting and positioning unit 13 can lift and fix the mold device 20. In addition, the mold pushing unit 12 can also push the mold device 20 to the next workstation. The next workstation can also adopt a chain conveyor track group set at approximately the same height, the end of which is close to the output end of the mold pushing unit 12, forming a relatively continuous conveyor track.

[0061] The mold device 20 is placed on the chain conveyor track 121. When the mold device 20 moves with the chain conveyor track 121 to a predetermined position in the workstation, the lifting and positioning part 32 lifts the mold device 20 upwards a predetermined distance, so that the mold device 20 is disengaged from the chain conveyor track 121, so that the mold device 20 no longer moves and stays in the current workstation for inspection or assembly.

[0062] Figure 8 yes Figure 2 Enlarged view of the inner part of frame A.

[0063] like Figure 4 and Figure 8 As shown, in this embodiment, the lifting and positioning part 13 includes four lifting cylinders 131 and a pair of lifting limiting members 132.

[0064] Four lifting cylinders 131 are mounted on the bracket in the door panel placement device 10. The four lifting cylinders 131 are distributed at the four corners of a rectangle and are at a uniform vertical height. The arrangement of the four lifting cylinders 131 corresponds to the arrangement of the four positioning blocks 2111 at the bottom of the mold device 20. The output ends of the lifting cylinders 131 match the circular grooves of the positioning blocks 2111 and can be embedded in the circular grooves. During lifting and positioning, under the control of the industrial control computer, the four lifting cylinders 131 lift simultaneously, their output ends abutting against the bottom surface of the circular grooves, thereby smoothly lifting the mold device 20. Simultaneously, since the output ends of the four lifting cylinders 131 are respectively embedded in the circular grooves of the four positioning blocks 2111, the mold device 20 is fixed horizontally after lifting.

[0065] like Figure 8As shown, a pair of lifting limit members 132 are respectively disposed on an outer baffle 124 to limit the lifting height of the mold device 20 when lifting the mold device 20. The lifting limit member 132 includes a vertical section 1321, an extension section 1322, and a buffer pad 1323 made of metal. One end of the vertical section 1321 is connected to the bracket in the door panel placement device 10 and extends vertically. The extension section 1322 extends horizontally from the other end of the vertical section 1321 toward the chain conveyor track 121. The buffer pad 1323 is installed on the lower surface of the extension section 1322 and is made of a relatively low-hardness material such as plastic to provide a buffering effect during the limiting. Three second pin holes 1321a are provided on the vertical section 1321, and the arrangement of the three second pin holes 1321a corresponds to the three first pin holes 2113a on the height limiting block 2113.

[0066] When the mold assembly 20 is lifted, the upper surfaces of the pair of height limiting blocks 2113 of the mold assembly 20 abut against the buffer pads 1323 on the lower surfaces of the extensions 1322 of the pair of lifting limiting members 132, thereby blocking the mold assembly 20 at a predetermined lifting height, which is higher than the outer baffle 124, allowing the pin holes to protrude from above the outer baffle 124. When the mold assembly 20 is blocked, the three first pin holes 2113a and the three second pin holes 1321a are aligned to form a through hole, at which point a pin can be inserted into the through hole, thereby fixing the mold assembly 20 vertically.

[0067] After the mold device 20 is fixed in both the horizontal and vertical directions, the cover plate 22 can be opened to perform inspection or assembly operations on the automotive door panel workpiece at the current workstation. In this embodiment, at the door panel placement station, after the mold device 20 is opened, the automotive door panel workpiece to be processed is placed in, photographed and inspected, and then the mold device 20 is closed to transport it to the next workstation.

[0068] like Figure 5 As shown, the rotary drive unit 14 is used to rotate the cover plate 22 of the mold device 20 to open or close. The rotary drive unit 14 includes a rotary drive motor 141, a transmission assembly 142, and a rotation limit assembly 143.

[0069] The rotary drive motor 141 is mounted on the bracket in the door panel placement device 10. In this embodiment, the rotary drive motor 141 is a geared motor.

[0070] The transmission assembly 142 includes a bearing 1421, an opening / closing rod 1422, and a circular pusher 1423.

[0071] The opening / closing rod 1422 has two circular ends, one end being larger than the other, gradually narrowing from the larger end to the smaller end. A circular mounting hole is provided on the larger end, through which the opening / closing rod 1422 is mounted on the output end of the rotary drive motor 141. Driven by the rotary drive motor 141, the opening / closing rod 1422 can swing vertically. A circular pusher 1423 is rotatably mounted on the smaller end of the opening / closing rod 1422 by bolts, nuts, or other connecting parts. The diameter of the circular pusher 1423 matches the opening width of the U-shaped opening of the connector 224 of the mold device 20, allowing it to be inserted into the U-shaped opening and push one side of the U-shaped opening, thereby driving the cover plate 22 to open and close. Specifically, taking the opening of cover 22 as an example, the rotary drive motor 141 drives the opening and closing rod 1422 to swing downward, and the circular pusher 1423 presses against the lower side of the U-shaped opening of the plug 224 and pushes it, thereby causing the cover 22 to rotate upward and open through the lever action.

[0072] Furthermore, the initial position setting of the opening and closing rod 1422 corresponds to the lifting position setting of the lifting positioning part 32. When the mold device 20 is lifted into place by the lifting positioning part 32, the circular pusher 1423 of the opening and closing rod 1422 is inserted into the U-shaped opening of the connector 224 of the mold device 20.

[0073] The rotation limiting assembly 143 includes four perforated plates 1431 and four proximity sensors 1432, used to limit the maximum stroke of the opening / closing rod 1422. Two of the perforated plates 1431 are positioned above the output end of the rotary drive motor 141, and the other two are positioned below. Two proximity sensors 1432 are installed in the perforations of the two upper perforated plates 1431 by nuts, and the other two proximity sensors 1432 are installed in the same manner below. Among the two upper proximity sensors 1432, the uppermost proximity sensor 1432 is further away from the output end of the rotary drive motor 141 in the horizontal direction. When the opening / closing rod 1422 swings upward, when the two upper proximity sensors 1432 simultaneously sense the opening / closing rod 1422, it indicates that the opening / closing rod 1422 has swung upward to the predetermined maximum position, that is, the cover plate 22 has closed in place. At this time, the industrial control computer can control the rotary drive motor 141 to stop working in a timely manner based on the signals from the two upper proximity sensors 1432, to prevent the cover plate 22 from pressing down further and damaging the automotive door panel workpiece. The same applies to the two proximity sensors 1432 below, so I won't repeat the explanation.

[0074] As described above, the door panel placement mechanism 11 of this embodiment can move the mold device 20 carrying the automobile door panel workpiece to a predetermined position in the current workstation, lift and position the mold device 20, and then drive the mold device 20 to open to facilitate inspection or assembly in the current workstation, and drive the mold device 20 to close to facilitate the continued transport of the mold device 20 to the next workstation after the process in the current workstation is completed.

[0075] Furthermore, this embodiment only specifically describes one mold device 20. In reality, since automobile door panel products have various specifications (front door panel, rear door panel, door panels for different car models, etc.), and different specifications of automobile door panels differ in size and shape, multiple mold devices 20 can be set according to assembly needs, each corresponding to a different specification of automobile door panel. The overall size of the mold device 20, the shape of the cover frame 221, the arrangement of each pressure head 223, and the extension length can all be set differently to correspond to different specifications of automobile door panels. Since the mold pushing part 12 only requires the mold device 20 to have a predetermined width, the lifting and positioning part 13 only needs to cooperate with the four positioning blocks, and the rotation driving part 14 only needs to cooperate with the plug-in part 224, for multiple mold devices 20, as long as their overall width, positioning block 2111, and plug-in part 224 are consistent, the door panel placement mechanism 11 is a universal mechanism. When changing the mold device 20, the door panel placement mechanism 11 does not need to be replaced or adjusted.

[0076] Functions and effects of the embodiments

[0077] According to the door panel placement mechanism provided in this embodiment, since it has a lifting and positioning part, it can lift the mold device upward and fix it at a predetermined position in the workstation, which is conducive to the assembly work of the current workstation. Since the mold device and the car door panel workpiece it carries can be fixed at the predetermined position, the pre-set assembly tools and their working paths in the workstation can be set, which is also conducive to the automation of the assembly work in the workstation. Since it has a rotation drive part, it can drive the cover plate of the mold device to rotate, thereby opening the mold device and exposing the car door panel workpiece inside for assembly processing. After the assembly of the current workstation is completed, the mold device can be closed, which is conducive to the transportation of car workpieces between different workstations. Since it has a mold pushing part, it can transport the mold device to the subsequent conveying track, thereby transporting the mold device carrying the car door panel workpiece to the subsequent assembly workstations. In summary, the door panel placement mechanism of the present invention can fix the mold device at a predetermined position in the workstation, drive the mold device to open or close, and transport the mold device to the conveying device connected to the subsequent workstation, thereby facilitating the automatic or semi-automatic assembly of automotive door panel workpieces, saving a lot of manpower, improving the production efficiency of automotive door panel products and the consistency of the final products.

[0078] In the embodiment, the output ends of the multiple lifting cylinders of the lifting and positioning part can be embedded in the grooves of the multiple positioning blocks of the mold device. After being lifted into place, the lifting limit member and the height limit block of the mold device can be pinned by the pin. Therefore, the lifting and positioning part can not only lift the mold device, but also fix the mold device in both the horizontal and vertical directions after being lifted, which is beneficial to the assembly work of the current station.

[0079] Furthermore, when the mold device is lifted, the end of the opening and closing rod of the rotary drive unit is precisely inserted into the U-shaped opening of the mold device's connector. Therefore, after the mold device is lifted, the rotary drive unit can drive the cover plate of the mold device to rotate and open, without the need for manual adjustment and adaptation, further saving manpower.

[0080] Furthermore, since the mold pushing part only requires the mold device to have a predetermined width, the lifting and positioning part only needs to cooperate with the positioning block of the mold device, and the rotary drive part only needs to cooperate with the plug-in part of the mold device, the door panel placement mechanism 30 is a universal mechanism for various specifications of mold devices, as long as the overall width, positioning block and plug-in part settings are consistent. When changing different specifications of mold devices, the door panel placement mechanism does not need to be changed or adjusted, thereby saving a lot of time and manpower when switching assembly products, and further improving production efficiency and flexibility.

[0081] The above embodiments are only used to illustrate specific implementations of the present invention, and the present invention is not limited to the scope of the description of the above embodiments.

Claims

1. A door panel placement mechanism, disposed in a station of a door panel assembly line, for fixing a door panel assembly mold device at a predetermined position in the station, the door panel assembly mold device having a support unit for supporting an automotive door panel workpiece and a cover plate rotatably connected to the support unit, characterized in that... include: The lifting and positioning part is used to lift the support unit upward and fix it in the predetermined position; as well as A rotary drive unit, inserted into the cover plate, is used to drive the cover plate to rotate, thereby opening or closing the door panel assembly mold device. The support unit has multiple positioning blocks below it, each with a downward-facing circular groove. The support unit also has a pair of height-limiting blocks on its side. The lifting and positioning part includes: Multiple lifting cylinders, arranged corresponding to the multiple positioning blocks, with their output ends matching the grooves, are used to lift the support unit and fix it horizontally; and At least one pair of lifting limiting members are provided for abutting against a pair of height limiting blocks during lifting, thereby limiting the lifting height of the support unit. A connector with a U-shaped opening is provided on the side of the cover plate connected to the support unit. The rotation drive unit includes: A rotary drive motor is used to drive the cover plate to rotate and open / close; and A transmission assembly is used to connect the output end of the rotary drive motor and the cover plate. When the lifting and positioning part lifts the support unit, the cover plate and the transmission assembly are connected by a bearing. The transmission assembly includes: Bearings; The opening / closing rod has a mounting hole at one end, through which it is mounted to the output end of the rotary drive motor via the mounting hole and the bearing; and A circular pusher is rotatably mounted on the other end of the opening / closing rod. The initial position of the opening and closing rod corresponds to the lifting position of the lifting and positioning part. When the lifting and positioning part lifts the support unit into place, the circular pusher is embedded in the U-shaped opening, thereby connecting with the plug of the cover plate.

2. The door panel placement mechanism according to claim 1, characterized in that: in, The height limiting block has multiple first pin holes. The lifting and limiting component has multiple second pin holes, which are arranged corresponding to the multiple first pin holes. When the height limiting block abuts against the lifting limiting member, the plurality of first pin holes and the plurality of second pin holes align to form a through hole for inserting a pin, thereby fixing the support unit in the vertical direction.

3. The door panel placement mechanism according to claim 1, characterized in that: in, The rotary drive unit further includes: A rotation limit assembly is used to limit the maximum stroke of the opening / closing lever.

4. The door panel placement mechanism according to claim 3, Its features are: The rotation limiting component includes: Multiple perforated plates are respectively disposed above and below the output end of the rotary drive motor, and the perforated plates are provided with perforations; and Multiple proximity sensors are installed in multiple of the aforementioned holes. Once the opening / closing rod reaches the position of the proximity sensor, the proximity sensor senses the opening / closing rod and generates a corresponding signal.

5. The door panel placement mechanism according to claim 1, characterized in that, Also includes: The mold pushing unit is used to move the door panel assembly mold device to a predetermined position in the workstation, so that the lifting and positioning unit can lift it, and to move the door panel assembly mold device to the next workstation.

6. The door panel placement mechanism according to claim 5, Its features are: The mold pushing part includes: Two chain conveyor tracks are arranged parallel to each other, with their spacing corresponding to the overall width of the door panel assembly mold device, and each track has a drive gear and a chain mounted on the drive gear. A transmission rod, with its two ends respectively connected to the drive gears of the two chain conveyor tracks, is used to ensure that the conveying speeds of the two chain conveyor tracks are consistent; and A push drive motor is used to drive the chain to rotate.

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